From: Robbie Ko robbieko@synology.com

[ Upstream commit 8ecebf4d767e2307a946c8905278d6358eda35c3 ]

Commit e9894fd3e3b3 ("Btrfs: fix snapshot vs nocow writting") forced nocow writes to fallback to COW, during writeback, when a snapshot is created. This resulted in writes made before creating the snapshot to unexpectedly fail with ENOSPC during writeback when success (0) was returned to user space through the write system call.

The steps leading to this problem are:

1. When it's not possible to allocate data space for a write, the buffered write path checks if a NOCOW write is possible. If it is, it will not reserve space and success (0) is returned to user space.

2. Then when a snapshot is created, the root's will_be_snapshotted atomic is incremented and writeback is triggered for all inode's that belong to the root being snapshotted. Incrementing that atomic forces all previous writes to fallback to COW during writeback (running delalloc).

3. This results in the writeback for the inodes to fail and therefore setting the ENOSPC error in their mappings, so that a subsequent fsync on them will report the error to user space. So it's not a completely silent data loss (since fsync will report ENOSPC) but it's a very unexpected and undesirable behaviour, because if a clean shutdown/unmount of the filesystem happens without previous calls to fsync, it is expected to have the data present in the files after mounting the filesystem again.

So fix this by adding a new atomic named snapshot_force_cow to the root structure which prevents this behaviour and works the following way:

1. It is incremented when we start to create a snapshot after triggering writeback and before waiting for writeback to finish.

2. This new atomic is now what is used by writeback (running delalloc) to decide whether we need to fallback to COW or not. Because we incremented this new atomic after triggering writeback in the snapshot creation ioctl, we ensure that all buffered writes that happened before snapshot creation will succeed and not fallback to COW (which would make them fail with ENOSPC).

3. The existing atomic, will_be_snapshotted, is kept because it is used to force new buffered writes, that start after we started snapshotting, to reserve data space even when NOCOW is possible. This makes these writes fail early with ENOSPC when there's no available space to allocate, preventing the unexpected behaviour of writeback later failing with ENOSPC due to a fallback to COW mode.

Fixes: e9894fd3e3b3 ("Btrfs: fix snapshot vs nocow writting") Signed-off-by: Robbie Ko robbieko@synology.com Reviewed-by: Filipe Manana fdmanana@suse.com Signed-off-by: David Sterba dsterba@suse.com Signed-off-by: Sasha Levin alexander.levin@microsoft.com --- fs/btrfs/ctree.h | 1 + fs/btrfs/disk-io.c | 1 + fs/btrfs/inode.c | 25 ++++--------------------- fs/btrfs/ioctl.c | 16 ++++++++++++++++ 4 files changed, 22 insertions(+), 21 deletions(-)

diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index 118346aceea9..663ce0518d27 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -1277,6 +1277,7 @@ struct btrfs_root { int send_in_progress; struct btrfs_subvolume_writers *subv_writers; atomic_t will_be_snapshotted; + atomic_t snapshot_force_cow;

/* For qgroup metadata reserved space */ spinlock_t qgroup_meta_rsv_lock; diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index dfed08e70ec1..891b1aab3480 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -1217,6 +1217,7 @@ static void __setup_root(struct btrfs_root *root, struct btrfs_fs_info *fs_info, atomic_set(&root->log_batch, 0); refcount_set(&root->refs, 1); atomic_set(&root->will_be_snapshotted, 0); + atomic_set(&root->snapshot_force_cow, 0); root->log_transid = 0; root->log_transid_committed = -1; root->last_log_commit = 0; diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 071d949f69ec..d3736fbf6774 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -1275,7 +1275,7 @@ static noinline int run_delalloc_nocow(struct inode *inode, u64 disk_num_bytes; u64 ram_bytes; int extent_type; - int ret, err; + int ret; int type; int nocow; int check_prev = 1; @@ -1407,11 +1407,8 @@ static noinline int run_delalloc_nocow(struct inode *inode, * if there are pending snapshots for this root, * we fall into common COW way. */ - if (!nolock) { - err = btrfs_start_write_no_snapshotting(root); - if (!err) - goto out_check; - } + if (!nolock && atomic_read(&root->snapshot_force_cow)) + goto out_check; /* * force cow if csum exists in the range. * this ensure that csum for a given extent are @@ -1420,9 +1417,6 @@ static noinline int run_delalloc_nocow(struct inode *inode, ret = csum_exist_in_range(fs_info, disk_bytenr, num_bytes); if (ret) { - if (!nolock) - btrfs_end_write_no_snapshotting(root); - /* * ret could be -EIO if the above fails to read * metadata. @@ -1435,11 +1429,8 @@ static noinline int run_delalloc_nocow(struct inode *inode, WARN_ON_ONCE(nolock); goto out_check; } - if (!btrfs_inc_nocow_writers(fs_info, disk_bytenr)) { - if (!nolock) - btrfs_end_write_no_snapshotting(root); + if (!btrfs_inc_nocow_writers(fs_info, disk_bytenr)) goto out_check; - } nocow = 1; } else if (extent_type == BTRFS_FILE_EXTENT_INLINE) { extent_end = found_key.offset + @@ -1453,8 +1444,6 @@ static noinline int run_delalloc_nocow(struct inode *inode, out_check: if (extent_end <= start) { path->slots[0]++; - if (!nolock && nocow) - btrfs_end_write_no_snapshotting(root); if (nocow) btrfs_dec_nocow_writers(fs_info, disk_bytenr); goto next_slot; @@ -1476,8 +1465,6 @@ static noinline int run_delalloc_nocow(struct inode *inode, end, page_started, nr_written, 1, NULL); if (ret) { - if (!nolock && nocow) - btrfs_end_write_no_snapshotting(root); if (nocow) btrfs_dec_nocow_writers(fs_info, disk_bytenr); @@ -1497,8 +1484,6 @@ static noinline int run_delalloc_nocow(struct inode *inode, ram_bytes, BTRFS_COMPRESS_NONE, BTRFS_ORDERED_PREALLOC); if (IS_ERR(em)) { - if (!nolock && nocow) - btrfs_end_write_no_snapshotting(root); if (nocow) btrfs_dec_nocow_writers(fs_info, disk_bytenr); @@ -1537,8 +1522,6 @@ static noinline int run_delalloc_nocow(struct inode *inode, EXTENT_CLEAR_DATA_RESV, PAGE_UNLOCK | PAGE_SET_PRIVATE2);

- if (!nolock && nocow) - btrfs_end_write_no_snapshotting(root); cur_offset = extent_end;

/* diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c index f3d6be0c657b..ef7159646615 100644 --- a/fs/btrfs/ioctl.c +++ b/fs/btrfs/ioctl.c @@ -761,6 +761,7 @@ static int create_snapshot(struct btrfs_root *root, struct inode *dir, struct btrfs_pending_snapshot *pending_snapshot; struct btrfs_trans_handle *trans; int ret; + bool snapshot_force_cow = false;

if (!test_bit(BTRFS_ROOT_REF_COWS, &root->state)) return -EINVAL; @@ -777,6 +778,11 @@ static int create_snapshot(struct btrfs_root *root, struct inode *dir, goto free_pending; }

+ /* + * Force new buffered writes to reserve space even when NOCOW is + * possible. This is to avoid later writeback (running dealloc) to + * fallback to COW mode and unexpectedly fail with ENOSPC. + */ atomic_inc(&root->will_be_snapshotted); smp_mb__after_atomic(); /* wait for no snapshot writes */ @@ -787,6 +793,14 @@ static int create_snapshot(struct btrfs_root *root, struct inode *dir, if (ret) goto dec_and_free;

+ /* + * All previous writes have started writeback in NOCOW mode, so now + * we force future writes to fallback to COW mode during snapshot + * creation. + */ + atomic_inc(&root->snapshot_force_cow); + snapshot_force_cow = true; + btrfs_wait_ordered_extents(root, U64_MAX, 0, (u64)-1);

btrfs_init_block_rsv(&pending_snapshot->block_rsv, @@ -851,6 +865,8 @@ static int create_snapshot(struct btrfs_root *root, struct inode *dir, fail: btrfs_subvolume_release_metadata(fs_info, &pending_snapshot->block_rsv); dec_and_free: + if (snapshot_force_cow) + atomic_dec(&root->snapshot_force_cow); if (atomic_dec_and_test(&root->will_be_snapshotted)) wake_up_var(&root->will_be_snapshotted); free_pending:

From: Paul Mackerras paulus@ozlabs.org

[ Upstream commit 46dec40fb741f00f1864580130779aeeaf24fb3d ]

This fixes a bug which causes guest virtual addresses to get translated to guest real addresses incorrectly when the guest is using the HPT MMU and has more than 256GB of RAM, or more specifically has a HPT larger than 2GB. This has showed up in testing as a failure of the host to emulate doorbell instructions correctly on POWER9 for HPT guests with more than 256GB of RAM.

The bug is that the HPTE index in kvmppc_mmu_book3s_64_hv_xlate() is stored as an int, and in forming the HPTE address, the index gets shifted left 4 bits as an int before being signed-extended to 64 bits. The simple fix is to make the variable a long int, matching the return type of kvmppc_hv_find_lock_hpte(), which is what calculates the index.

Fixes: 697d3899dcb4 ("KVM: PPC: Implement MMIO emulation support for Book3S HV guests") Signed-off-by: Paul Mackerras paulus@ozlabs.org Signed-off-by: Sasha Levin alexander.levin@microsoft.com --- arch/powerpc/kvm/book3s_64_mmu_hv.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/powerpc/kvm/book3s_64_mmu_hv.c b/arch/powerpc/kvm/book3s_64_mmu_hv.c index 7f3a8cf5d66f..4c08f42f6406 100644 --- a/arch/powerpc/kvm/book3s_64_mmu_hv.c +++ b/arch/powerpc/kvm/book3s_64_mmu_hv.c @@ -359,7 +359,7 @@ static int kvmppc_mmu_book3s_64_hv_xlate(struct kvm_vcpu *vcpu, gva_t eaddr, unsigned long pp, key; unsigned long v, orig_v, gr; __be64 *hptep; - int index; + long int index; int virtmode = vcpu->arch.shregs.msr & (data ? MSR_DR : MSR_IR);

if (kvm_is_radix(vcpu->kvm))

From: Johannes Berg johannes.berg@intel.com

[ Upstream commit 8a54d8fc160e67ad485d95a0322ce1221f80770a ]

Pointer arithmetic already adjusts by the size of the struct, so the sizeof() calculation is wrong. This is basically the same as Colin King's patch for similar code in the iwlwifi driver.

Fixes: 230ebaa189af ("cfg80211: read wmm rules from regulatory database") Signed-off-by: Johannes Berg johannes.berg@intel.com Signed-off-by: Sasha Levin alexander.levin@microsoft.com --- net/wireless/reg.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/net/wireless/reg.c b/net/wireless/reg.c index 4fc66a117b7d..283902974fbf 100644 --- a/net/wireless/reg.c +++ b/net/wireless/reg.c @@ -452,8 +452,7 @@ reg_copy_regd(const struct ieee80211_regdomain *src_regd) continue;

regd->reg_rules[i].wmm_rule = d_wmm + - (src_regd->reg_rules[i].wmm_rule - s_wmm) / - sizeof(struct ieee80211_wmm_rule); + (src_regd->reg_rules[i].wmm_rule - s_wmm); } return regd; }

From: Varun Prakash varun@chelsio.com

[ Upstream commit 89809b028b6f54187b7d81a0c69b35d394c52e62 ]

Reported-by: Colin Ian King colin.king@canonical.com Signed-off-by: Varun Prakash varun@chelsio.com Signed-off-by: Martin K. Petersen martin.petersen@oracle.com Signed-off-by: Sasha Levin alexander.levin@microsoft.com --- drivers/scsi/csiostor/csio_hw.c | 16 +++++++++------- 1 file changed, 9 insertions(+), 7 deletions(-)

diff --git a/drivers/scsi/csiostor/csio_hw.c b/drivers/scsi/csiostor/csio_hw.c index a10cf25ee7f9..1ee255a62f1b 100644 --- a/drivers/scsi/csiostor/csio_hw.c +++ b/drivers/scsi/csiostor/csio_hw.c @@ -2275,8 +2275,8 @@ static int csio_hw_prep_fw(struct csio_hw *hw, struct fw_info *fw_info, }

/* - * Returns -EINVAL if attempts to flash the firmware failed - * else returns 0, + * Returns -EINVAL if attempts to flash the firmware failed, + * -ENOMEM if memory allocation failed else returns 0, * if flashing was not attempted because the card had the * latest firmware ECANCELED is returned */ @@ -2304,6 +2304,13 @@ csio_hw_flash_fw(struct csio_hw *hw, int *reset) return -EINVAL; }

+ /* allocate memory to read the header of the firmware on the + * card + */ + card_fw = kmalloc(sizeof(*card_fw), GFP_KERNEL); + if (!card_fw) + return -ENOMEM; + if (csio_is_t5(pci_dev->device & CSIO_HW_CHIP_MASK)) fw_bin_file = FW_FNAME_T5; else @@ -2317,11 +2324,6 @@ csio_hw_flash_fw(struct csio_hw *hw, int *reset) fw_size = fw->size; }

- /* allocate memory to read the header of the firmware on the - * card - */ - card_fw = kmalloc(sizeof(*card_fw), GFP_KERNEL); - /* upgrade FW logic */ ret = csio_hw_prep_fw(hw, fw_info, fw_data, fw_size, card_fw, hw->fw_state, reset);

From: Dan Carpenter dan.carpenter@oracle.com

[ Upstream commit b9eb3b14f1dbf16bf27b6c1ffe6b8c00ec945c9b ]

The problem is that ->reset_state is a u8 but it can be set to -1 or -2 in aac_tmf_callback() and the error handling in aac_eh_target_reset() relies on it to be signed.

[mkp: fixed typo]

Fixes: 0d643ff3c353 ("scsi: aacraid: use aac_tmf_callback for reset fib") Signed-off-by: Dan Carpenter dan.carpenter@oracle.com Signed-off-by: Martin K. Petersen martin.petersen@oracle.com Signed-off-by: Sasha Levin alexander.levin@microsoft.com --- drivers/scsi/aacraid/aacraid.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/scsi/aacraid/aacraid.h b/drivers/scsi/aacraid/aacraid.h index 29bf1e60f542..39eb415987fc 100644 --- a/drivers/scsi/aacraid/aacraid.h +++ b/drivers/scsi/aacraid/aacraid.h @@ -1346,7 +1346,7 @@ struct fib { struct aac_hba_map_info { __le32 rmw_nexus; /* nexus for native HBA devices */ u8 devtype; /* device type */ - u8 reset_state; /* 0 - no reset, 1..x - */ + s8 reset_state; /* 0 - no reset, 1..x - */ /* after xth TM LUN reset */ u16 qd_limit; u32 scan_counter;

From: John Fastabend john.fastabend@gmail.com

[ Upstream commit 501ca81760c204ec59b73e4a00bee5971fc0f1b1 ]

Currently, when a redirect occurs in sockmap and an error occurs in the redirect call we unwind the scatterlist once in the error path of bpf_tcp_sendmsg_do_redirect() and then again in sendmsg(). Then in the error path of sendmsg we decrement the copied count by the send size.

However, its possible we partially sent data before the error was generated. This can happen if do_tcp_sendpages() partially sends the scatterlist before encountering a memory pressure error. If this happens we need to decrement the copied value (the value tracking how many bytes were actually sent to TCP stack) by the number of remaining bytes _not_ the entire send size. Otherwise we risk confusing userspace.

Also we don't need two calls to free the scatterlist one is good enough. So remove the one in bpf_tcp_sendmsg_do_redirect() and then properly reduce copied by the number of remaining bytes which may in fact be the entire send size if no bytes were sent.

To do this use bool to indicate if free_start_sg() should do mem accounting or not.

Signed-off-by: John Fastabend john.fastabend@gmail.com Signed-off-by: Daniel Borkmann daniel@iogearbox.net Signed-off-by: Sasha Levin alexander.levin@microsoft.com --- kernel/bpf/sockmap.c | 45 ++++++++++++++++++++++---------------------- 1 file changed, 22 insertions(+), 23 deletions(-)

diff --git a/kernel/bpf/sockmap.c b/kernel/bpf/sockmap.c index e43730b52ea6..2ddf1501aace 100644 --- a/kernel/bpf/sockmap.c +++ b/kernel/bpf/sockmap.c @@ -236,7 +236,7 @@ static int bpf_tcp_init(struct sock *sk) }

static void smap_release_sock(struct smap_psock *psock, struct sock *sock); -static int free_start_sg(struct sock *sk, struct sk_msg_buff *md); +static int free_start_sg(struct sock *sk, struct sk_msg_buff *md, bool charge);

static void bpf_tcp_release(struct sock *sk) { @@ -248,7 +248,7 @@ static void bpf_tcp_release(struct sock *sk) goto out;

if (psock->cork) { - free_start_sg(psock->sock, psock->cork); + free_start_sg(psock->sock, psock->cork, true); kfree(psock->cork); psock->cork = NULL; } @@ -330,14 +330,14 @@ static void bpf_tcp_close(struct sock *sk, long timeout) close_fun = psock->save_close;

if (psock->cork) { - free_start_sg(psock->sock, psock->cork); + free_start_sg(psock->sock, psock->cork, true); kfree(psock->cork); psock->cork = NULL; }

list_for_each_entry_safe(md, mtmp, &psock->ingress, list) { list_del(&md->list); - free_start_sg(psock->sock, md); + free_start_sg(psock->sock, md, true); kfree(md); }

@@ -570,14 +570,16 @@ static void free_bytes_sg(struct sock *sk, int bytes, md->sg_start = i; }

-static int free_sg(struct sock *sk, int start, struct sk_msg_buff *md) +static int free_sg(struct sock *sk, int start, + struct sk_msg_buff *md, bool charge) { struct scatterlist *sg = md->sg_data; int i = start, free = 0;

while (sg[i].length) { free += sg[i].length; - sk_mem_uncharge(sk, sg[i].length); + if (charge) + sk_mem_uncharge(sk, sg[i].length); if (!md->skb) put_page(sg_page(&sg[i])); sg[i].length = 0; @@ -594,9 +596,9 @@ static int free_sg(struct sock *sk, int start, struct sk_msg_buff *md) return free; }

-static int free_start_sg(struct sock *sk, struct sk_msg_buff *md) +static int free_start_sg(struct sock *sk, struct sk_msg_buff *md, bool charge) { - int free = free_sg(sk, md->sg_start, md); + int free = free_sg(sk, md->sg_start, md, charge);

md->sg_start = md->sg_end; return free; @@ -604,7 +606,7 @@ static int free_start_sg(struct sock *sk, struct sk_msg_buff *md)

static int free_curr_sg(struct sock *sk, struct sk_msg_buff *md) { - return free_sg(sk, md->sg_curr, md); + return free_sg(sk, md->sg_curr, md, true); }

static int bpf_map_msg_verdict(int _rc, struct sk_msg_buff *md) @@ -718,7 +720,7 @@ static int bpf_tcp_ingress(struct sock *sk, int apply_bytes, list_add_tail(&r->list, &psock->ingress); sk->sk_data_ready(sk); } else { - free_start_sg(sk, r); + free_start_sg(sk, r, true); kfree(r); }

@@ -755,14 +757,10 @@ static int bpf_tcp_sendmsg_do_redirect(struct sock *sk, int send, release_sock(sk); } smap_release_sock(psock, sk); - if (unlikely(err)) - goto out; - return 0; + return err; out_rcu: rcu_read_unlock(); -out: - free_bytes_sg(NULL, send, md, false); - return err; + return 0; }

static inline void bpf_md_init(struct smap_psock *psock) @@ -825,7 +823,7 @@ static int bpf_exec_tx_verdict(struct smap_psock *psock, case __SK_PASS: err = bpf_tcp_push(sk, send, m, flags, true); if (unlikely(err)) { - *copied -= free_start_sg(sk, m); + *copied -= free_start_sg(sk, m, true); break; }

@@ -848,16 +846,17 @@ static int bpf_exec_tx_verdict(struct smap_psock *psock, lock_sock(sk);

if (unlikely(err < 0)) { - free_start_sg(sk, m); + int free = free_start_sg(sk, m, false); + psock->sg_size = 0; if (!cork) - *copied -= send; + *copied -= free; } else { psock->sg_size -= send; }

if (cork) { - free_start_sg(sk, m); + free_start_sg(sk, m, true); psock->sg_size = 0; kfree(m); m = NULL; @@ -1124,7 +1123,7 @@ static int bpf_tcp_sendmsg(struct sock *sk, struct msghdr *msg, size_t size) err = sk_stream_wait_memory(sk, &timeo); if (err) { if (m && m != psock->cork) - free_start_sg(sk, m); + free_start_sg(sk, m, true); goto out_err; } } @@ -1580,13 +1579,13 @@ static void smap_gc_work(struct work_struct *w) bpf_prog_put(psock->bpf_tx_msg);

if (psock->cork) { - free_start_sg(psock->sock, psock->cork); + free_start_sg(psock->sock, psock->cork, true); kfree(psock->cork); }

list_for_each_entry_safe(md, mtmp, &psock->ingress, list) { list_del(&md->list); - free_start_sg(psock->sock, md); + free_start_sg(psock->sock, md, true); kfree(md); }

From: Danek Duvall duvall@comfychair.org

[ Upstream commit 67d1ba8a6dc83d90cd58b89fa6cbf9ae35a0cf7f ]

The mod mask for VHT capabilities intends to say that you can override the number of STBC receive streams, and it does, but only by accident. The IEEE80211_VHT_CAP_RXSTBC_X aren't bits to be set, but values (albeit left-shifted). ORing the bits together gets the right answer, but we should use the _MASK macro here instead.

Signed-off-by: Danek Duvall duvall@comfychair.org Signed-off-by: Johannes Berg johannes.berg@intel.com Signed-off-by: Sasha Levin alexander.levin@microsoft.com --- net/mac80211/main.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/net/mac80211/main.c b/net/mac80211/main.c index 0358f20b675f..27cd64acaf00 100644 --- a/net/mac80211/main.c +++ b/net/mac80211/main.c @@ -470,10 +470,7 @@ static const struct ieee80211_vht_cap mac80211_vht_capa_mod_mask = { cpu_to_le32(IEEE80211_VHT_CAP_RXLDPC | IEEE80211_VHT_CAP_SHORT_GI_80 | IEEE80211_VHT_CAP_SHORT_GI_160 | - IEEE80211_VHT_CAP_RXSTBC_1 | - IEEE80211_VHT_CAP_RXSTBC_2 | - IEEE80211_VHT_CAP_RXSTBC_3 | - IEEE80211_VHT_CAP_RXSTBC_4 | + IEEE80211_VHT_CAP_RXSTBC_MASK | IEEE80211_VHT_CAP_TXSTBC | IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE | IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE |

From: Stanislaw Gruszka sgruszka@redhat.com

[ Upstream commit 38cb87ee47fb825f6c9d645c019f75b3905c0ab2 ]

Make wmm_rule be part of the reg_rule structure. This simplifies the code a lot at the cost of having bigger memory usage. However in most cases we have only few reg_rule's and when we do have many like in iwlwifi we do not save memory as it allocates a separate wmm_rule for each channel anyway.

This also fixes a bug reported in various places where somewhere the pointers were corrupted and we ended up doing a null-dereference.

Fixes: 230ebaa189af ("cfg80211: read wmm rules from regulatory database") Signed-off-by: Stanislaw Gruszka sgruszka@redhat.com [rephrase commit message slightly] Signed-off-by: Johannes Berg johannes.berg@intel.com Signed-off-by: Sasha Levin alexander.levin@microsoft.com --- .../wireless/intel/iwlwifi/iwl-nvm-parse.c | 50 ++--------- include/net/cfg80211.h | 4 +- include/net/regulatory.h | 4 +- net/mac80211/util.c | 8 +- net/wireless/nl80211.c | 10 +-- net/wireless/reg.c | 90 +++---------------- 6 files changed, 31 insertions(+), 135 deletions(-)

diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-nvm-parse.c b/drivers/net/wireless/intel/iwlwifi/iwl-nvm-parse.c index b815ba38dbdb..88121548eb9f 100644 --- a/drivers/net/wireless/intel/iwlwifi/iwl-nvm-parse.c +++ b/drivers/net/wireless/intel/iwlwifi/iwl-nvm-parse.c @@ -877,15 +877,12 @@ iwl_parse_nvm_mcc_info(struct device *dev, const struct iwl_cfg *cfg, const u8 *nvm_chan = cfg->nvm_type == IWL_NVM_EXT ? iwl_ext_nvm_channels : iwl_nvm_channels; struct ieee80211_regdomain *regd, *copy_rd; - int size_of_regd, regd_to_copy, wmms_to_copy; - int size_of_wmms = 0; + int size_of_regd, regd_to_copy; struct ieee80211_reg_rule *rule; - struct ieee80211_wmm_rule *wmm_rule, *d_wmm, *s_wmm; struct regdb_ptrs *regdb_ptrs; enum nl80211_band band; int center_freq, prev_center_freq = 0; - int valid_rules = 0, n_wmms = 0; - int i; + int valid_rules = 0; bool new_rule; int max_num_ch = cfg->nvm_type == IWL_NVM_EXT ? IWL_NVM_NUM_CHANNELS_EXT : IWL_NVM_NUM_CHANNELS; @@ -904,11 +901,7 @@ iwl_parse_nvm_mcc_info(struct device *dev, const struct iwl_cfg *cfg, sizeof(struct ieee80211_regdomain) + num_of_ch * sizeof(struct ieee80211_reg_rule);

- if (geo_info & GEO_WMM_ETSI_5GHZ_INFO) - size_of_wmms = - num_of_ch * sizeof(struct ieee80211_wmm_rule); - - regd = kzalloc(size_of_regd + size_of_wmms, GFP_KERNEL); + regd = kzalloc(size_of_regd, GFP_KERNEL); if (!regd) return ERR_PTR(-ENOMEM);

@@ -922,8 +915,6 @@ iwl_parse_nvm_mcc_info(struct device *dev, const struct iwl_cfg *cfg, regd->alpha2[0] = fw_mcc >> 8; regd->alpha2[1] = fw_mcc & 0xff;

- wmm_rule = (struct ieee80211_wmm_rule *)((u8 *)regd + size_of_regd); - for (ch_idx = 0; ch_idx < num_of_ch; ch_idx++) { ch_flags = (u16)__le32_to_cpup(channels + ch_idx); band = (ch_idx < NUM_2GHZ_CHANNELS) ? @@ -977,26 +968,10 @@ iwl_parse_nvm_mcc_info(struct device *dev, const struct iwl_cfg *cfg, band == NL80211_BAND_2GHZ) continue;

- if (!reg_query_regdb_wmm(regd->alpha2, center_freq, - &regdb_ptrs[n_wmms].token, wmm_rule)) { - /* Add only new rules */ - for (i = 0; i < n_wmms; i++) { - if (regdb_ptrs[i].token == - regdb_ptrs[n_wmms].token) { - rule->wmm_rule = regdb_ptrs[i].rule; - break; - } - } - if (i == n_wmms) { - rule->wmm_rule = wmm_rule; - regdb_ptrs[n_wmms++].rule = wmm_rule; - wmm_rule++; - } - } + reg_query_regdb_wmm(regd->alpha2, center_freq, rule); }

regd->n_reg_rules = valid_rules; - regd->n_wmm_rules = n_wmms;

/* * Narrow down regdom for unused regulatory rules to prevent hole @@ -1005,28 +980,13 @@ iwl_parse_nvm_mcc_info(struct device *dev, const struct iwl_cfg *cfg, regd_to_copy = sizeof(struct ieee80211_regdomain) + valid_rules * sizeof(struct ieee80211_reg_rule);

- wmms_to_copy = sizeof(struct ieee80211_wmm_rule) * n_wmms; - - copy_rd = kzalloc(regd_to_copy + wmms_to_copy, GFP_KERNEL); + copy_rd = kzalloc(regd_to_copy, GFP_KERNEL); if (!copy_rd) { copy_rd = ERR_PTR(-ENOMEM); goto out; }

memcpy(copy_rd, regd, regd_to_copy); - memcpy((u8 *)copy_rd + regd_to_copy, (u8 *)regd + size_of_regd, - wmms_to_copy); - - d_wmm = (struct ieee80211_wmm_rule *)((u8 *)copy_rd + regd_to_copy); - s_wmm = (struct ieee80211_wmm_rule *)((u8 *)regd + size_of_regd); - - for (i = 0; i < regd->n_reg_rules; i++) { - if (!regd->reg_rules[i].wmm_rule) - continue; - - copy_rd->reg_rules[i].wmm_rule = d_wmm + - (regd->reg_rules[i].wmm_rule - s_wmm); - }

out: kfree(regdb_ptrs); diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index 1beb3ead0385..7229c186d199 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -4763,8 +4763,8 @@ const char *reg_initiator_name(enum nl80211_reg_initiator initiator); * * Return: 0 on success. -ENODATA. */ -int reg_query_regdb_wmm(char *alpha2, int freq, u32 *ptr, - struct ieee80211_wmm_rule *rule); +int reg_query_regdb_wmm(char *alpha2, int freq, + struct ieee80211_reg_rule *rule);

/* * callbacks for asynchronous cfg80211 methods, notification diff --git a/include/net/regulatory.h b/include/net/regulatory.h index 60f8cc86a447..3469750df0f4 100644 --- a/include/net/regulatory.h +++ b/include/net/regulatory.h @@ -217,15 +217,15 @@ struct ieee80211_wmm_rule { struct ieee80211_reg_rule { struct ieee80211_freq_range freq_range; struct ieee80211_power_rule power_rule; - struct ieee80211_wmm_rule *wmm_rule; + struct ieee80211_wmm_rule wmm_rule; u32 flags; u32 dfs_cac_ms; + bool has_wmm; };

struct ieee80211_regdomain { struct rcu_head rcu_head; u32 n_reg_rules; - u32 n_wmm_rules; char alpha2[3]; enum nl80211_dfs_regions dfs_region; struct ieee80211_reg_rule reg_rules[]; diff --git a/net/mac80211/util.c b/net/mac80211/util.c index d02fbfec3783..c80187d6e6bb 100644 --- a/net/mac80211/util.c +++ b/net/mac80211/util.c @@ -1120,7 +1120,7 @@ void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata, { struct ieee80211_chanctx_conf *chanctx_conf; const struct ieee80211_reg_rule *rrule; - struct ieee80211_wmm_ac *wmm_ac; + const struct ieee80211_wmm_ac *wmm_ac; u16 center_freq = 0;

if (sdata->vif.type != NL80211_IFTYPE_AP && @@ -1139,15 +1139,15 @@ void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata,

rrule = freq_reg_info(sdata->wdev.wiphy, MHZ_TO_KHZ(center_freq));

- if (IS_ERR_OR_NULL(rrule) || !rrule->wmm_rule) { + if (IS_ERR_OR_NULL(rrule) || !rrule->has_wmm) { rcu_read_unlock(); return; }

if (sdata->vif.type == NL80211_IFTYPE_AP) - wmm_ac = &rrule->wmm_rule->ap[ac]; + wmm_ac = &rrule->wmm_rule.ap[ac]; else - wmm_ac = &rrule->wmm_rule->client[ac]; + wmm_ac = &rrule->wmm_rule.client[ac]; qparam->cw_min = max_t(u16, qparam->cw_min, wmm_ac->cw_min); qparam->cw_max = max_t(u16, qparam->cw_max, wmm_ac->cw_max); qparam->aifs = max_t(u8, qparam->aifs, wmm_ac->aifsn); diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 80bc986c79e5..e3dcffd96919 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -667,13 +667,13 @@ static int nl80211_msg_put_wmm_rules(struct sk_buff *msg, goto nla_put_failure;

if (nla_put_u16(msg, NL80211_WMMR_CW_MIN, - rule->wmm_rule->client[j].cw_min) || + rule->wmm_rule.client[j].cw_min) || nla_put_u16(msg, NL80211_WMMR_CW_MAX, - rule->wmm_rule->client[j].cw_max) || + rule->wmm_rule.client[j].cw_max) || nla_put_u8(msg, NL80211_WMMR_AIFSN, - rule->wmm_rule->client[j].aifsn) || + rule->wmm_rule.client[j].aifsn) || nla_put_u8(msg, NL80211_WMMR_TXOP, - rule->wmm_rule->client[j].cot)) + rule->wmm_rule.client[j].cot)) goto nla_put_failure;

nla_nest_end(msg, nl_wmm_rule); @@ -766,7 +766,7 @@ static int nl80211_msg_put_channel(struct sk_buff *msg, struct wiphy *wiphy, const struct ieee80211_reg_rule *rule = freq_reg_info(wiphy, chan->center_freq);

- if (!IS_ERR(rule) && rule->wmm_rule) { + if (!IS_ERR_OR_NULL(rule) && rule->has_wmm) { if (nl80211_msg_put_wmm_rules(msg, rule)) goto nla_put_failure; } diff --git a/net/wireless/reg.c b/net/wireless/reg.c index 283902974fbf..2f702adf2912 100644 --- a/net/wireless/reg.c +++ b/net/wireless/reg.c @@ -425,35 +425,23 @@ static const struct ieee80211_regdomain * reg_copy_regd(const struct ieee80211_regdomain *src_regd) { struct ieee80211_regdomain *regd; - int size_of_regd, size_of_wmms; + int size_of_regd; unsigned int i; - struct ieee80211_wmm_rule *d_wmm, *s_wmm;

size_of_regd = sizeof(struct ieee80211_regdomain) + src_regd->n_reg_rules * sizeof(struct ieee80211_reg_rule); - size_of_wmms = src_regd->n_wmm_rules * - sizeof(struct ieee80211_wmm_rule);

- regd = kzalloc(size_of_regd + size_of_wmms, GFP_KERNEL); + regd = kzalloc(size_of_regd, GFP_KERNEL); if (!regd) return ERR_PTR(-ENOMEM);

memcpy(regd, src_regd, sizeof(struct ieee80211_regdomain));

- d_wmm = (struct ieee80211_wmm_rule *)((u8 *)regd + size_of_regd); - s_wmm = (struct ieee80211_wmm_rule *)((u8 *)src_regd + size_of_regd); - memcpy(d_wmm, s_wmm, size_of_wmms); - - for (i = 0; i < src_regd->n_reg_rules; i++) { + for (i = 0; i < src_regd->n_reg_rules; i++) memcpy(&regd->reg_rules[i], &src_regd->reg_rules[i], sizeof(struct ieee80211_reg_rule)); - if (!src_regd->reg_rules[i].wmm_rule) - continue;

- regd->reg_rules[i].wmm_rule = d_wmm + - (src_regd->reg_rules[i].wmm_rule - s_wmm); - } return regd; }

@@ -859,9 +847,10 @@ static bool valid_regdb(const u8 *data, unsigned int size) return true; }

-static void set_wmm_rule(struct ieee80211_wmm_rule *rule, +static void set_wmm_rule(struct ieee80211_reg_rule *rrule, struct fwdb_wmm_rule *wmm) { + struct ieee80211_wmm_rule *rule = &rrule->wmm_rule; unsigned int i;

for (i = 0; i < IEEE80211_NUM_ACS; i++) { @@ -875,11 +864,13 @@ static void set_wmm_rule(struct ieee80211_wmm_rule *rule, rule->ap[i].aifsn = wmm->ap[i].aifsn; rule->ap[i].cot = 1000 * be16_to_cpu(wmm->ap[i].cot); } + + rrule->has_wmm = true; }

static int __regdb_query_wmm(const struct fwdb_header *db, const struct fwdb_country *country, int freq, - u32 *dbptr, struct ieee80211_wmm_rule *rule) + struct ieee80211_reg_rule *rule) { unsigned int ptr = be16_to_cpu(country->coll_ptr) << 2; struct fwdb_collection *coll = (void *)((u8 *)db + ptr); @@ -900,8 +891,6 @@ static int __regdb_query_wmm(const struct fwdb_header *db, wmm_ptr = be16_to_cpu(rrule->wmm_ptr) << 2; wmm = (void *)((u8 *)db + wmm_ptr); set_wmm_rule(rule, wmm); - if (dbptr) - *dbptr = wmm_ptr; return 0; } } @@ -909,8 +898,7 @@ static int __regdb_query_wmm(const struct fwdb_header *db, return -ENODATA; }

-int reg_query_regdb_wmm(char *alpha2, int freq, u32 *dbptr, - struct ieee80211_wmm_rule *rule) +int reg_query_regdb_wmm(char *alpha2, int freq, struct ieee80211_reg_rule *rule) { const struct fwdb_header *hdr = regdb; const struct fwdb_country *country; @@ -924,8 +912,7 @@ int reg_query_regdb_wmm(char *alpha2, int freq, u32 *dbptr, country = &hdr->country[0]; while (country->coll_ptr) { if (alpha2_equal(alpha2, country->alpha2)) - return __regdb_query_wmm(regdb, country, freq, dbptr, - rule); + return __regdb_query_wmm(regdb, country, freq, rule);

country++; } @@ -934,32 +921,13 @@ int reg_query_regdb_wmm(char *alpha2, int freq, u32 *dbptr, } EXPORT_SYMBOL(reg_query_regdb_wmm);

-struct wmm_ptrs { - struct ieee80211_wmm_rule *rule; - u32 ptr; -}; - -static struct ieee80211_wmm_rule *find_wmm_ptr(struct wmm_ptrs *wmm_ptrs, - u32 wmm_ptr, int n_wmms) -{ - int i; - - for (i = 0; i < n_wmms; i++) { - if (wmm_ptrs[i].ptr == wmm_ptr) - return wmm_ptrs[i].rule; - } - return NULL; -} - static int regdb_query_country(const struct fwdb_header *db, const struct fwdb_country *country) { unsigned int ptr = be16_to_cpu(country->coll_ptr) << 2; struct fwdb_collection *coll = (void *)((u8 *)db + ptr); struct ieee80211_regdomain *regdom; - struct ieee80211_regdomain *tmp_rd; - unsigned int size_of_regd, i, n_wmms = 0; - struct wmm_ptrs *wmm_ptrs; + unsigned int size_of_regd, i;

size_of_regd = sizeof(struct ieee80211_regdomain) + coll->n_rules * sizeof(struct ieee80211_reg_rule); @@ -968,12 +936,6 @@ static int regdb_query_country(const struct fwdb_header *db, if (!regdom) return -ENOMEM;

- wmm_ptrs = kcalloc(coll->n_rules, sizeof(*wmm_ptrs), GFP_KERNEL); - if (!wmm_ptrs) { - kfree(regdom); - return -ENOMEM; - } - regdom->n_reg_rules = coll->n_rules; regdom->alpha2[0] = country->alpha2[0]; regdom->alpha2[1] = country->alpha2[1]; @@ -1012,37 +974,11 @@ static int regdb_query_country(const struct fwdb_header *db, 1000 * be16_to_cpu(rule->cac_timeout); if (rule->len >= offsetofend(struct fwdb_rule, wmm_ptr)) { u32 wmm_ptr = be16_to_cpu(rule->wmm_ptr) << 2; - struct ieee80211_wmm_rule *wmm_pos = - find_wmm_ptr(wmm_ptrs, wmm_ptr, n_wmms); - struct fwdb_wmm_rule *wmm; - struct ieee80211_wmm_rule *wmm_rule; - - if (wmm_pos) { - rrule->wmm_rule = wmm_pos; - continue; - } - wmm = (void *)((u8 *)db + wmm_ptr); - tmp_rd = krealloc(regdom, size_of_regd + (n_wmms + 1) * - sizeof(struct ieee80211_wmm_rule), - GFP_KERNEL); - - if (!tmp_rd) { - kfree(regdom); - kfree(wmm_ptrs); - return -ENOMEM; - } - regdom = tmp_rd; - - wmm_rule = (struct ieee80211_wmm_rule *) - ((u8 *)regdom + size_of_regd + n_wmms * - sizeof(struct ieee80211_wmm_rule)); + struct fwdb_wmm_rule *wmm = (void *)((u8 *)db + wmm_ptr);

- set_wmm_rule(wmm_rule, wmm); - wmm_ptrs[n_wmms].ptr = wmm_ptr; - wmm_ptrs[n_wmms++].rule = wmm_rule; + set_wmm_rule(rrule, wmm); } } - kfree(wmm_ptrs);

return reg_schedule_apply(regdom); }

From: Haim Dreyfuss haim.dreyfuss@intel.com

[ Upstream commit d3c89bbc7491d5e288ca2993e999d24ba9ff52ad ]

TXOP (also known as Channel Occupancy Time) is u16 and should be added using nla_put_u16 instead of u8, fix that.

Fixes: 50f32718e125 ("nl80211: Add wmm rule attribute to NL80211_CMD_GET_WIPHY dump command") Signed-off-by: Haim Dreyfuss haim.dreyfuss@intel.com Signed-off-by: Luca Coelho luciano.coelho@intel.com Signed-off-by: Johannes Berg johannes.berg@intel.com Signed-off-by: Sasha Levin alexander.levin@microsoft.com --- net/wireless/nl80211.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index e3dcffd96919..3f7ffbe6c634 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -672,8 +672,8 @@ static int nl80211_msg_put_wmm_rules(struct sk_buff *msg, rule->wmm_rule.client[j].cw_max) || nla_put_u8(msg, NL80211_WMMR_AIFSN, rule->wmm_rule.client[j].aifsn) || - nla_put_u8(msg, NL80211_WMMR_TXOP, - rule->wmm_rule.client[j].cot)) + nla_put_u16(msg, NL80211_WMMR_TXOP, + rule->wmm_rule.client[j].cot)) goto nla_put_failure;

nla_nest_end(msg, nl_wmm_rule);

From: Daniel Borkmann daniel@iogearbox.net

[ Upstream commit 5b24109b0563d45094c470684c1f8cea1af269f8 ]

While recently going over bpf_msg_pull_data(), I noticed three issues which are fixed in here:

1) When we attempt to find the first scatterlist element (sge) for the start offset, we add len to the offset before we check for start < offset + len, whereas it should come after when we iterate to the next sge to accumulate the offsets. For example, given a start offset of 12 with a sge length of 8 for the first sge in the list would lead us to determine this sge as the first sge thinking it covers first 16 bytes where start is located, whereas start sits in subsequent sges so we would end up pulling in the wrong data.

2) After figuring out the starting sge, we have a short-cut test in !msg->sg_copy[i] && bytes <= len. This checks whether it's not needed to make the page at the sge private where we can just exit by updating msg->data and msg->data_end. However, the length test is not fully correct. bytes <= len checks whether the requested bytes (end - start offsets) fit into the sge's length. The part that is missing is that start must not be sge length aligned. Meaning, the start offset into the sge needs to be accounted as well on top of the requested bytes as otherwise we can access the sge out of bounds. For example the sge could have length of 8, our requested bytes could have length of 8, but at a start offset of 4, so we also would need to pull in 4 bytes of the next sge, when we jump to the out label we do set msg->data to sg_virt(&sg[i]) + start - offset and msg->data_end to msg->data + bytes which would be oob.

3) The subsequent bytes < copy test for finding the last sge has the same issue as in point 2) but also it tests for less than rather than less or equal to. Meaning if the sge length is of 8 and requested bytes of 8 while having the start aligned with the sge, we would unnecessarily go and pull in the next sge as well to make it private.

Fixes: 015632bb30da ("bpf: sk_msg program helper bpf_sk_msg_pull_data") Signed-off-by: Daniel Borkmann daniel@iogearbox.net Acked-by: John Fastabend john.fastabend@gmail.com Signed-off-by: Alexei Starovoitov ast@kernel.org Signed-off-by: Sasha Levin alexander.levin@microsoft.com --- net/core/filter.c | 14 +++++++++----- 1 file changed, 9 insertions(+), 5 deletions(-)

diff --git a/net/core/filter.c b/net/core/filter.c index 9dfd145eedcc..a9f8d71575c7 100644 --- a/net/core/filter.c +++ b/net/core/filter.c @@ -2276,10 +2276,10 @@ BPF_CALL_4(bpf_msg_pull_data, struct sk_msg_buff *, msg, u32, start, u32, end, u64, flags) { unsigned int len = 0, offset = 0, copy = 0; + int bytes = end - start, bytes_sg_total; struct scatterlist *sg = msg->sg_data; int first_sg, last_sg, i, shift; unsigned char *p, *to, *from; - int bytes = end - start; struct page *page;

if (unlikely(flags || end <= start)) @@ -2289,9 +2289,9 @@ BPF_CALL_4(bpf_msg_pull_data, i = msg->sg_start; do { len = sg[i].length; - offset += len; if (start < offset + len) break; + offset += len; i++; if (i == MAX_SKB_FRAGS) i = 0; @@ -2300,7 +2300,11 @@ BPF_CALL_4(bpf_msg_pull_data, if (unlikely(start >= offset + len)) return -EINVAL;

- if (!msg->sg_copy[i] && bytes <= len) + /* The start may point into the sg element so we need to also + * account for the headroom. + */ + bytes_sg_total = start - offset + bytes; + if (!msg->sg_copy[i] && bytes_sg_total <= len) goto out;

first_sg = i; @@ -2320,12 +2324,12 @@ BPF_CALL_4(bpf_msg_pull_data, i++; if (i == MAX_SKB_FRAGS) i = 0; - if (bytes < copy) + if (bytes_sg_total <= copy) break; } while (i != msg->sg_end); last_sg = i;

- if (unlikely(copy < end - start)) + if (unlikely(bytes_sg_total > copy)) return -EINVAL;

page = alloc_pages(__GFP_NOWARN | GFP_ATOMIC, get_order(copy));

From: Yuan-Chi Pang fu3mo6goo@gmail.com

[ Upstream commit 1f631c3201fe5491808df143d8fcba81b3197ffd ]

IEEE 802.11-2016 14.10.8.3 HWMP sequence numbering says: If it is a target mesh STA, it shall update its own HWMP SN to maximum (current HWMP SN, target HWMP SN in the PREQ element) + 1 immediately before it generates a PREP element in response to a PREQ element.

Signed-off-by: Yuan-Chi Pang fu3mo6goo@gmail.com Signed-off-by: Johannes Berg johannes.berg@intel.com Signed-off-by: Sasha Levin alexander.levin@microsoft.com --- net/mac80211/mesh_hwmp.c | 4 ++++ 1 file changed, 4 insertions(+)

diff --git a/net/mac80211/mesh_hwmp.c b/net/mac80211/mesh_hwmp.c index 35ad3983ae4b..daf9db3c8f24 100644 --- a/net/mac80211/mesh_hwmp.c +++ b/net/mac80211/mesh_hwmp.c @@ -572,6 +572,10 @@ static void hwmp_preq_frame_process(struct ieee80211_sub_if_data *sdata, forward = false; reply = true; target_metric = 0; + + if (SN_GT(target_sn, ifmsh->sn)) + ifmsh->sn = target_sn; + if (time_after(jiffies, ifmsh->last_sn_update + net_traversal_jiffies(sdata)) || time_before(jiffies, ifmsh->last_sn_update)) {

From: Andy Shevchenko andriy.shevchenko@linux.intel.com

[ Upstream commit 993b9bc5c47fda86f8ab4e53d68c6fea5ff2764a ]

The commit ca876c7483b6

("gpiolib-acpi: make sure we trigger edge events at least once on boot")

added a initial value check for pin which is about to be locked as IRQ. Unfortunately, not all GPIO drivers can do that atomically. Thus, switch to cansleep version of the call. Otherwise we have a warning:

... WARNING: CPU: 2 PID: 1408 at drivers/gpio/gpiolib.c:2883 gpiod_get_value+0x46/0x50 ... RIP: 0010:gpiod_get_value+0x46/0x50 ...

The change tested on Intel Broxton with Whiskey Cove PMIC GPIO controller.

Fixes: ca876c7483b6 ("gpiolib-acpi: make sure we trigger edge events at least once on boot") Signed-off-by: Andy Shevchenko andriy.shevchenko@linux.intel.com Cc: Hans de Goede hdegoede@redhat.com Cc: Benjamin Tissoires benjamin.tissoires@redhat.com Acked-by: Mika Westerberg mika.westerberg@linux.intel.com Signed-off-by: Linus Walleij linus.walleij@linaro.org Signed-off-by: Sasha Levin alexander.levin@microsoft.com --- drivers/gpio/gpiolib-acpi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpio/gpiolib-acpi.c b/drivers/gpio/gpiolib-acpi.c index addd9fecc198..7da51b5186c0 100644 --- a/drivers/gpio/gpiolib-acpi.c +++ b/drivers/gpio/gpiolib-acpi.c @@ -186,7 +186,7 @@ static acpi_status acpi_gpiochip_request_interrupt(struct acpi_resource *ares,

gpiod_direction_input(desc);

- value = gpiod_get_value(desc); + value = gpiod_get_value_cansleep(desc);

ret = gpiochip_lock_as_irq(chip, pin); if (ret) {

From: Alexey Khoroshilov khoroshilov@ispras.ru

[ Upstream commit a618cf4800970d260871c159b7eec014a1da2e81 ]

If dwapb_gpio_add_port() fails in dwapb_gpio_probe(), gpio->clk is left undisabled.

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Alexey Khoroshilov khoroshilov@ispras.ru Signed-off-by: Linus Walleij linus.walleij@linaro.org Signed-off-by: Sasha Levin alexander.levin@microsoft.com --- drivers/gpio/gpio-dwapb.c | 1 + 1 file changed, 1 insertion(+)

diff --git a/drivers/gpio/gpio-dwapb.c b/drivers/gpio/gpio-dwapb.c index 7a2de3de6571..5b12d6fdd448 100644 --- a/drivers/gpio/gpio-dwapb.c +++ b/drivers/gpio/gpio-dwapb.c @@ -726,6 +726,7 @@ static int dwapb_gpio_probe(struct platform_device *pdev) out_unregister: dwapb_gpio_unregister(gpio); dwapb_irq_teardown(gpio); + clk_disable_unprepare(gpio->clk);

return err; }

From: Daniel Borkmann daniel@iogearbox.net

[ Upstream commit a8cf76a9023bc6709b1361d06bb2fae5227b9d68 ]

When we perform the sg shift repair for the scatterlist ring, we currently start out at i = first_sg + 1. However, this is not correct since the first_sg could point to the sge sitting at slot MAX_SKB_FRAGS - 1, and a subsequent i = MAX_SKB_FRAGS will access the scatterlist ring (sg) out of bounds. Add the sk_msg_iter_var() helper for iterating through the ring, and apply the same rule for advancing to the next ring element as we do elsewhere. Later work will use this helper also in other places.

Fixes: 015632bb30da ("bpf: sk_msg program helper bpf_sk_msg_pull_data") Signed-off-by: Daniel Borkmann daniel@iogearbox.net Acked-by: John Fastabend john.fastabend@gmail.com Signed-off-by: Alexei Starovoitov ast@kernel.org Signed-off-by: Sasha Levin alexander.levin@microsoft.com --- net/core/filter.c | 26 +++++++++++++------------- 1 file changed, 13 insertions(+), 13 deletions(-)

diff --git a/net/core/filter.c b/net/core/filter.c index cc4d660aafe1..a80b57e4aaed 100644 --- a/net/core/filter.c +++ b/net/core/filter.c @@ -2272,6 +2272,13 @@ static const struct bpf_func_proto bpf_msg_cork_bytes_proto = { .arg2_type = ARG_ANYTHING, };

+#define sk_msg_iter_var(var) \ + do { \ + var++; \ + if (var == MAX_SKB_FRAGS) \ + var = 0; \ + } while (0) + BPF_CALL_4(bpf_msg_pull_data, struct sk_msg_buff *, msg, u32, start, u32, end, u64, flags) { @@ -2292,9 +2299,7 @@ BPF_CALL_4(bpf_msg_pull_data, if (start < offset + len) break; offset += len; - i++; - if (i == MAX_SKB_FRAGS) - i = 0; + sk_msg_iter_var(i); } while (i != msg->sg_end);

if (unlikely(start >= offset + len)) @@ -2320,9 +2325,7 @@ BPF_CALL_4(bpf_msg_pull_data, */ do { copy += sg[i].length; - i++; - if (i == MAX_SKB_FRAGS) - i = 0; + sk_msg_iter_var(i); if (bytes_sg_total <= copy) break; } while (i != msg->sg_end); @@ -2348,9 +2351,7 @@ BPF_CALL_4(bpf_msg_pull_data, sg[i].length = 0; put_page(sg_page(&sg[i]));

- i++; - if (i == MAX_SKB_FRAGS) - i = 0; + sk_msg_iter_var(i); } while (i != last_sg);

sg[first_sg].length = copy; @@ -2367,7 +2368,8 @@ BPF_CALL_4(bpf_msg_pull_data, if (!shift) goto out;

- i = first_sg + 1; + i = first_sg; + sk_msg_iter_var(i); do { int move_from;

@@ -2384,9 +2386,7 @@ BPF_CALL_4(bpf_msg_pull_data, sg[move_from].page_link = 0; sg[move_from].offset = 0;

- i++; - if (i == MAX_SKB_FRAGS) - i = 0; + sk_msg_iter_var(i); } while (1); msg->sg_end -= shift; if (msg->sg_end < 0)

From: Peng Li lipeng321@huawei.com

[ Upstream commit 31fabbee8f5c658c3fa1603c66e9e4f51ea8c2c6 ]

If there are packets in hardware when changing the speed or duplex, it may cause hardware hang up.

This patch adds the code for waiting chip to clean the all pkts(TX & RX) in chip when the driver uses the function named "adjust link".

This patch cleans the pkts as follows: 1) close rx of chip, close tx of protocol stack. 2) wait rcb, ppe, mac to clean. 3) adjust link 4) open rx of chip, open tx of protocol stack.

Signed-off-by: Peng Li lipeng321@huawei.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin alexander.levin@microsoft.com --- drivers/net/ethernet/hisilicon/hns/hnae.h | 2 + .../net/ethernet/hisilicon/hns/hns_ae_adapt.c | 67 ++++++++++++++++++- .../ethernet/hisilicon/hns/hns_dsaf_gmac.c | 36 ++++++++++ .../net/ethernet/hisilicon/hns/hns_dsaf_mac.c | 44 ++++++++++++ .../net/ethernet/hisilicon/hns/hns_dsaf_mac.h | 8 +++ .../ethernet/hisilicon/hns/hns_dsaf_main.c | 29 ++++++++ .../ethernet/hisilicon/hns/hns_dsaf_main.h | 3 + .../net/ethernet/hisilicon/hns/hns_dsaf_ppe.c | 23 +++++++ .../net/ethernet/hisilicon/hns/hns_dsaf_ppe.h | 1 + .../net/ethernet/hisilicon/hns/hns_dsaf_rcb.c | 23 +++++++ .../net/ethernet/hisilicon/hns/hns_dsaf_rcb.h | 1 + .../net/ethernet/hisilicon/hns/hns_dsaf_reg.h | 1 + drivers/net/ethernet/hisilicon/hns/hns_enet.c | 21 +++++- 13 files changed, 255 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/hisilicon/hns/hnae.h b/drivers/net/ethernet/hisilicon/hns/hnae.h index fa5b30f547f6..427866b9564e 100644 --- a/drivers/net/ethernet/hisilicon/hns/hnae.h +++ b/drivers/net/ethernet/hisilicon/hns/hnae.h @@ -486,6 +486,8 @@ struct hnae_ae_ops { u8 *auto_neg, u16 *speed, u8 *duplex); void (*toggle_ring_irq)(struct hnae_ring *ring, u32 val); void (*adjust_link)(struct hnae_handle *handle, int speed, int duplex); + bool (*need_adjust_link)(struct hnae_handle *handle, + int speed, int duplex); int (*set_loopback)(struct hnae_handle *handle, enum hnae_loop loop_mode, int en); void (*get_ring_bdnum_limit)(struct hnae_queue *queue, diff --git a/drivers/net/ethernet/hisilicon/hns/hns_ae_adapt.c b/drivers/net/ethernet/hisilicon/hns/hns_ae_adapt.c index bd68379d2bea..bf930ab3c2bd 100644 --- a/drivers/net/ethernet/hisilicon/hns/hns_ae_adapt.c +++ b/drivers/net/ethernet/hisilicon/hns/hns_ae_adapt.c @@ -155,6 +155,41 @@ static void hns_ae_put_handle(struct hnae_handle *handle) hns_ae_get_ring_pair(handle->qs[i])->used_by_vf = 0; }

+static int hns_ae_wait_flow_down(struct hnae_handle *handle) +{ + struct dsaf_device *dsaf_dev; + struct hns_ppe_cb *ppe_cb; + struct hnae_vf_cb *vf_cb; + int ret; + int i; + + for (i = 0; i < handle->q_num; i++) { + ret = hns_rcb_wait_tx_ring_clean(handle->qs[i]); + if (ret) + return ret; + } + + ppe_cb = hns_get_ppe_cb(handle); + ret = hns_ppe_wait_tx_fifo_clean(ppe_cb); + if (ret) + return ret; + + dsaf_dev = hns_ae_get_dsaf_dev(handle->dev); + if (!dsaf_dev) + return -EINVAL; + ret = hns_dsaf_wait_pkt_clean(dsaf_dev, handle->dport_id); + if (ret) + return ret; + + vf_cb = hns_ae_get_vf_cb(handle); + ret = hns_mac_wait_fifo_clean(vf_cb->mac_cb); + if (ret) + return ret; + + mdelay(10); + return 0; +} + static void hns_ae_ring_enable_all(struct hnae_handle *handle, int val) { int q_num = handle->q_num; @@ -399,12 +434,41 @@ static int hns_ae_get_mac_info(struct hnae_handle *handle, return hns_mac_get_port_info(mac_cb, auto_neg, speed, duplex); }

+static bool hns_ae_need_adjust_link(struct hnae_handle *handle, int speed, + int duplex) +{ + struct hns_mac_cb *mac_cb = hns_get_mac_cb(handle); + + return hns_mac_need_adjust_link(mac_cb, speed, duplex); +} + static void hns_ae_adjust_link(struct hnae_handle *handle, int speed, int duplex) { struct hns_mac_cb *mac_cb = hns_get_mac_cb(handle);

- hns_mac_adjust_link(mac_cb, speed, duplex); + switch (mac_cb->dsaf_dev->dsaf_ver) { + case AE_VERSION_1: + hns_mac_adjust_link(mac_cb, speed, duplex); + break; + + case AE_VERSION_2: + /* chip need to clear all pkt inside */ + hns_mac_disable(mac_cb, MAC_COMM_MODE_RX); + if (hns_ae_wait_flow_down(handle)) { + hns_mac_enable(mac_cb, MAC_COMM_MODE_RX); + break; + } + + hns_mac_adjust_link(mac_cb, speed, duplex); + hns_mac_enable(mac_cb, MAC_COMM_MODE_RX); + break; + + default: + break; + } + + return; }

static void hns_ae_get_ring_bdnum_limit(struct hnae_queue *queue, @@ -902,6 +966,7 @@ static struct hnae_ae_ops hns_dsaf_ops = { .get_status = hns_ae_get_link_status, .get_info = hns_ae_get_mac_info, .adjust_link = hns_ae_adjust_link, + .need_adjust_link = hns_ae_need_adjust_link, .set_loopback = hns_ae_config_loopback, .get_ring_bdnum_limit = hns_ae_get_ring_bdnum_limit, .get_pauseparam = hns_ae_get_pauseparam, diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_gmac.c b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_gmac.c index 74bd260ca02a..8c7bc5cf193c 100644 --- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_gmac.c +++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_gmac.c @@ -257,6 +257,16 @@ static void hns_gmac_get_pausefrm_cfg(void *mac_drv, u32 *rx_pause_en, *tx_pause_en = dsaf_get_bit(pause_en, GMAC_PAUSE_EN_TX_FDFC_B); }

+static bool hns_gmac_need_adjust_link(void *mac_drv, enum mac_speed speed, + int duplex) +{ + struct mac_driver *drv = (struct mac_driver *)mac_drv; + struct hns_mac_cb *mac_cb = drv->mac_cb; + + return (mac_cb->speed != speed) || + (mac_cb->half_duplex == duplex); +} + static int hns_gmac_adjust_link(void *mac_drv, enum mac_speed speed, u32 full_duplex) { @@ -309,6 +319,30 @@ static void hns_gmac_set_promisc(void *mac_drv, u8 en) hns_gmac_set_uc_match(mac_drv, en); }

+int hns_gmac_wait_fifo_clean(void *mac_drv) +{ + struct mac_driver *drv = (struct mac_driver *)mac_drv; + int wait_cnt; + u32 val; + + wait_cnt = 0; + while (wait_cnt++ < HNS_MAX_WAIT_CNT) { + val = dsaf_read_dev(drv, GMAC_FIFO_STATE_REG); + /* bit5~bit0 is not send complete pkts */ + if ((val & 0x3f) == 0) + break; + usleep_range(100, 200); + } + + if (wait_cnt >= HNS_MAX_WAIT_CNT) { + dev_err(drv->dev, + "hns ge %d fifo was not idle.\n", drv->mac_id); + return -EBUSY; + } + + return 0; +} + static void hns_gmac_init(void *mac_drv) { u32 port; @@ -690,6 +724,7 @@ void *hns_gmac_config(struct hns_mac_cb *mac_cb, struct mac_params *mac_param) mac_drv->mac_disable = hns_gmac_disable; mac_drv->mac_free = hns_gmac_free; mac_drv->adjust_link = hns_gmac_adjust_link; + mac_drv->need_adjust_link = hns_gmac_need_adjust_link; mac_drv->set_tx_auto_pause_frames = hns_gmac_set_tx_auto_pause_frames; mac_drv->config_max_frame_length = hns_gmac_config_max_frame_length; mac_drv->mac_pausefrm_cfg = hns_gmac_pause_frm_cfg; @@ -717,6 +752,7 @@ void *hns_gmac_config(struct hns_mac_cb *mac_cb, struct mac_params *mac_param) mac_drv->get_strings = hns_gmac_get_strings; mac_drv->update_stats = hns_gmac_update_stats; mac_drv->set_promiscuous = hns_gmac_set_promisc; + mac_drv->wait_fifo_clean = hns_gmac_wait_fifo_clean;

return (void *)mac_drv; } diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_mac.c b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_mac.c index 9dcc5765f11f..5c6b880c3eb7 100644 --- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_mac.c +++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_mac.c @@ -114,6 +114,26 @@ int hns_mac_get_port_info(struct hns_mac_cb *mac_cb, return 0; }

+/** + *hns_mac_is_adjust_link - check is need change mac speed and duplex register + *@mac_cb: mac device + *@speed: phy device speed + *@duplex:phy device duplex + * + */ +bool hns_mac_need_adjust_link(struct hns_mac_cb *mac_cb, int speed, int duplex) +{ + struct mac_driver *mac_ctrl_drv; + + mac_ctrl_drv = (struct mac_driver *)(mac_cb->priv.mac); + + if (mac_ctrl_drv->need_adjust_link) + return mac_ctrl_drv->need_adjust_link(mac_ctrl_drv, + (enum mac_speed)speed, duplex); + else + return true; +} + void hns_mac_adjust_link(struct hns_mac_cb *mac_cb, int speed, int duplex) { int ret; @@ -430,6 +450,16 @@ int hns_mac_vm_config_bc_en(struct hns_mac_cb *mac_cb, u32 vmid, bool enable) return 0; }

+int hns_mac_wait_fifo_clean(struct hns_mac_cb *mac_cb) +{ + struct mac_driver *drv = hns_mac_get_drv(mac_cb); + + if (drv->wait_fifo_clean) + return drv->wait_fifo_clean(drv); + + return 0; +} + void hns_mac_reset(struct hns_mac_cb *mac_cb) { struct mac_driver *drv = hns_mac_get_drv(mac_cb); @@ -999,6 +1029,20 @@ static int hns_mac_get_max_port_num(struct dsaf_device *dsaf_dev) return DSAF_MAX_PORT_NUM; }

+void hns_mac_enable(struct hns_mac_cb *mac_cb, enum mac_commom_mode mode) +{ + struct mac_driver *mac_ctrl_drv = hns_mac_get_drv(mac_cb); + + mac_ctrl_drv->mac_enable(mac_cb->priv.mac, mode); +} + +void hns_mac_disable(struct hns_mac_cb *mac_cb, enum mac_commom_mode mode) +{ + struct mac_driver *mac_ctrl_drv = hns_mac_get_drv(mac_cb); + + mac_ctrl_drv->mac_disable(mac_cb->priv.mac, mode); +} + /** * hns_mac_init - init mac * @dsaf_dev: dsa fabric device struct pointer diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_mac.h b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_mac.h index bbc0a98e7ca3..fbc75341bef7 100644 --- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_mac.h +++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_mac.h @@ -356,6 +356,9 @@ struct mac_driver { /*adjust mac mode of port,include speed and duplex*/ int (*adjust_link)(void *mac_drv, enum mac_speed speed, u32 full_duplex); + /* need adjust link */ + bool (*need_adjust_link)(void *mac_drv, enum mac_speed speed, + int duplex); /* config autoegotaite mode of port*/ void (*set_an_mode)(void *mac_drv, u8 enable); /* config loopbank mode */ @@ -394,6 +397,7 @@ struct mac_driver { void (*get_info)(void *mac_drv, struct mac_info *mac_info);

void (*update_stats)(void *mac_drv); + int (*wait_fifo_clean)(void *mac_drv);

enum mac_mode mac_mode; u8 mac_id; @@ -427,6 +431,7 @@ void *hns_xgmac_config(struct hns_mac_cb *mac_cb,

int hns_mac_init(struct dsaf_device *dsaf_dev); void mac_adjust_link(struct net_device *net_dev); +bool hns_mac_need_adjust_link(struct hns_mac_cb *mac_cb, int speed, int duplex); void hns_mac_get_link_status(struct hns_mac_cb *mac_cb, u32 *link_status); int hns_mac_change_vf_addr(struct hns_mac_cb *mac_cb, u32 vmid, char *addr); int hns_mac_set_multi(struct hns_mac_cb *mac_cb, @@ -463,5 +468,8 @@ int hns_mac_add_uc_addr(struct hns_mac_cb *mac_cb, u8 vf_id, int hns_mac_rm_uc_addr(struct hns_mac_cb *mac_cb, u8 vf_id, const unsigned char *addr); int hns_mac_clr_multicast(struct hns_mac_cb *mac_cb, int vfn); +void hns_mac_enable(struct hns_mac_cb *mac_cb, enum mac_commom_mode mode); +void hns_mac_disable(struct hns_mac_cb *mac_cb, enum mac_commom_mode mode); +int hns_mac_wait_fifo_clean(struct hns_mac_cb *mac_cb);

#endif /* _HNS_DSAF_MAC_H */ diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c index 0ce07f6eb1e6..0ef6d429308f 100644 --- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c +++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c @@ -2733,6 +2733,35 @@ void hns_dsaf_set_promisc_tcam(struct dsaf_device *dsaf_dev, soft_mac_entry->index = enable ? entry_index : DSAF_INVALID_ENTRY_IDX; }

+int hns_dsaf_wait_pkt_clean(struct dsaf_device *dsaf_dev, int port) +{ + u32 val, val_tmp; + int wait_cnt; + + if (port >= DSAF_SERVICE_NW_NUM) + return 0; + + wait_cnt = 0; + while (wait_cnt++ < HNS_MAX_WAIT_CNT) { + val = dsaf_read_dev(dsaf_dev, DSAF_VOQ_IN_PKT_NUM_0_REG + + (port + DSAF_XGE_NUM) * 0x40); + val_tmp = dsaf_read_dev(dsaf_dev, DSAF_VOQ_OUT_PKT_NUM_0_REG + + (port + DSAF_XGE_NUM) * 0x40); + if (val == val_tmp) + break; + + usleep_range(100, 200); + } + + if (wait_cnt >= HNS_MAX_WAIT_CNT) { + dev_err(dsaf_dev->dev, "hns dsaf clean wait timeout(%u - %u).\n", + val, val_tmp); + return -EBUSY; + } + + return 0; +} + /** * dsaf_probe - probo dsaf dev * @pdev: dasf platform device diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.h b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.h index 4507e8222683..0e1cd99831a6 100644 --- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.h +++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.h @@ -44,6 +44,8 @@ struct hns_mac_cb; #define DSAF_ROCE_CREDIT_CHN 8 #define DSAF_ROCE_CHAN_MODE 3

+#define HNS_MAX_WAIT_CNT 10000 + enum dsaf_roce_port_mode { DSAF_ROCE_6PORT_MODE, DSAF_ROCE_4PORT_MODE, @@ -463,5 +465,6 @@ int hns_dsaf_rm_mac_addr(

int hns_dsaf_clr_mac_mc_port(struct dsaf_device *dsaf_dev, u8 mac_id, u8 port_num); +int hns_dsaf_wait_pkt_clean(struct dsaf_device *dsaf_dev, int port);

#endif /* __HNS_DSAF_MAIN_H__ */ diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_ppe.c b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_ppe.c index 93e71e27401b..a19932aeb9d7 100644 --- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_ppe.c +++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_ppe.c @@ -274,6 +274,29 @@ static void hns_ppe_exc_irq_en(struct hns_ppe_cb *ppe_cb, int en) dsaf_write_dev(ppe_cb, PPE_INTEN_REG, msk_vlue & vld_msk); }

+int hns_ppe_wait_tx_fifo_clean(struct hns_ppe_cb *ppe_cb) +{ + int wait_cnt; + u32 val; + + wait_cnt = 0; + while (wait_cnt++ < HNS_MAX_WAIT_CNT) { + val = dsaf_read_dev(ppe_cb, PPE_CURR_TX_FIFO0_REG) & 0x3ffU; + if (!val) + break; + + usleep_range(100, 200); + } + + if (wait_cnt >= HNS_MAX_WAIT_CNT) { + dev_err(ppe_cb->dev, "hns ppe tx fifo clean wait timeout, still has %u pkt.\n", + val); + return -EBUSY; + } + + return 0; +} + /** * ppe_init_hw - init ppe * @ppe_cb: ppe device diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_ppe.h b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_ppe.h index 9d8e643e8aa6..f670e63a5a01 100644 --- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_ppe.h +++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_ppe.h @@ -100,6 +100,7 @@ struct ppe_common_cb {

};

+int hns_ppe_wait_tx_fifo_clean(struct hns_ppe_cb *ppe_cb); int hns_ppe_init(struct dsaf_device *dsaf_dev);

void hns_ppe_uninit(struct dsaf_device *dsaf_dev); diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_rcb.c b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_rcb.c index e2e28532e4dc..1e43d7a3ca86 100644 --- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_rcb.c +++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_rcb.c @@ -66,6 +66,29 @@ void hns_rcb_wait_fbd_clean(struct hnae_queue **qs, int q_num, u32 flag) "queue(%d) wait fbd(%d) clean fail!!\n", i, fbd_num); }

+int hns_rcb_wait_tx_ring_clean(struct hnae_queue *qs) +{ + u32 head, tail; + int wait_cnt; + + tail = dsaf_read_dev(&qs->tx_ring, RCB_REG_TAIL); + wait_cnt = 0; + while (wait_cnt++ < HNS_MAX_WAIT_CNT) { + head = dsaf_read_dev(&qs->tx_ring, RCB_REG_HEAD); + if (tail == head) + break; + + usleep_range(100, 200); + } + + if (wait_cnt >= HNS_MAX_WAIT_CNT) { + dev_err(qs->dev->dev, "rcb wait timeout, head not equal to tail.\n"); + return -EBUSY; + } + + return 0; +} + /** *hns_rcb_reset_ring_hw - ring reset *@q: ring struct pointer diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_rcb.h b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_rcb.h index 602816498c8d..2319b772a271 100644 --- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_rcb.h +++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_rcb.h @@ -136,6 +136,7 @@ void hns_rcbv2_int_clr_hw(struct hnae_queue *q, u32 flag); void hns_rcb_init_hw(struct ring_pair_cb *ring); void hns_rcb_reset_ring_hw(struct hnae_queue *q); void hns_rcb_wait_fbd_clean(struct hnae_queue **qs, int q_num, u32 flag); +int hns_rcb_wait_tx_ring_clean(struct hnae_queue *qs); u32 hns_rcb_get_rx_coalesced_frames( struct rcb_common_cb *rcb_common, u32 port_idx); u32 hns_rcb_get_tx_coalesced_frames( diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_reg.h b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_reg.h index 886cbbf25761..74d935d82cbc 100644 --- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_reg.h +++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_reg.h @@ -464,6 +464,7 @@ #define RCB_RING_INTMSK_TX_OVERTIME_REG 0x000C4 #define RCB_RING_INTSTS_TX_OVERTIME_REG 0x000C8

+#define GMAC_FIFO_STATE_REG 0x0000UL #define GMAC_DUPLEX_TYPE_REG 0x0008UL #define GMAC_FD_FC_TYPE_REG 0x000CUL #define GMAC_TX_WATER_LINE_REG 0x0010UL diff --git a/drivers/net/ethernet/hisilicon/hns/hns_enet.c b/drivers/net/ethernet/hisilicon/hns/hns_enet.c index ef9ef703d13a..48397d4e180f 100644 --- a/drivers/net/ethernet/hisilicon/hns/hns_enet.c +++ b/drivers/net/ethernet/hisilicon/hns/hns_enet.c @@ -1212,11 +1212,26 @@ static void hns_nic_adjust_link(struct net_device *ndev) struct hnae_handle *h = priv->ae_handle; int state = 1;

+ /* If there is no phy, do not need adjust link */ if (ndev->phydev) { - h->dev->ops->adjust_link(h, ndev->phydev->speed, - ndev->phydev->duplex); - state = ndev->phydev->link; + /* When phy link down, do nothing */ + if (ndev->phydev->link == 0) + return; + + if (h->dev->ops->need_adjust_link(h, ndev->phydev->speed, + ndev->phydev->duplex)) { + /* because Hi161X chip don't support to change gmac + * speed and duplex with traffic. Delay 200ms to + * make sure there is no more data in chip FIFO. + */ + netif_carrier_off(ndev); + msleep(200); + h->dev->ops->adjust_link(h, ndev->phydev->speed, + ndev->phydev->duplex); + netif_carrier_on(ndev); + } } + state = state && h->dev->ops->get_status(h);

if (state != priv->link) {

From: Chris Brandt chris.brandt@renesas.com

[ Upstream commit 6e0bb04d0e4f597d8d8f4f21401a9636f2809fd1 ]

Add support for the R7S9210 which is part of the RZ/A2 series.

Signed-off-by: Chris Brandt chris.brandt@renesas.com Acked-by: Rob Herring robh@kernel.org Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin alexander.levin@microsoft.com --- .../devicetree/bindings/net/sh_eth.txt | 1 + drivers/net/ethernet/renesas/sh_eth.c | 36 +++++++++++++++++++ 2 files changed, 37 insertions(+)

diff --git a/Documentation/devicetree/bindings/net/sh_eth.txt b/Documentation/devicetree/bindings/net/sh_eth.txt index 82a4cf2c145d..a62fe3b613fc 100644 --- a/Documentation/devicetree/bindings/net/sh_eth.txt +++ b/Documentation/devicetree/bindings/net/sh_eth.txt @@ -16,6 +16,7 @@ Required properties: "renesas,ether-r8a7794" if the device is a part of R8A7794 SoC. "renesas,gether-r8a77980" if the device is a part of R8A77980 SoC. "renesas,ether-r7s72100" if the device is a part of R7S72100 SoC. + "renesas,ether-r7s9210" if the device is a part of R7S9210 SoC. "renesas,rcar-gen1-ether" for a generic R-Car Gen1 device. "renesas,rcar-gen2-ether" for a generic R-Car Gen2 or RZ/G1 device. diff --git a/drivers/net/ethernet/renesas/sh_eth.c b/drivers/net/ethernet/renesas/sh_eth.c index 5614fd231bbe..6520379b390e 100644 --- a/drivers/net/ethernet/renesas/sh_eth.c +++ b/drivers/net/ethernet/renesas/sh_eth.c @@ -807,6 +807,41 @@ static struct sh_eth_cpu_data r8a77980_data = { .magic = 1, .cexcr = 1, }; + +/* R7S9210 */ +static struct sh_eth_cpu_data r7s9210_data = { + .soft_reset = sh_eth_soft_reset, + + .set_duplex = sh_eth_set_duplex, + .set_rate = sh_eth_set_rate_rcar, + + .register_type = SH_ETH_REG_FAST_SH4, + + .edtrr_trns = EDTRR_TRNS_ETHER, + .ecsr_value = ECSR_ICD, + .ecsipr_value = ECSIPR_ICDIP, + .eesipr_value = EESIPR_TWBIP | EESIPR_TABTIP | EESIPR_RABTIP | + EESIPR_RFCOFIP | EESIPR_ECIIP | EESIPR_FTCIP | + EESIPR_TDEIP | EESIPR_TFUFIP | EESIPR_FRIP | + EESIPR_RDEIP | EESIPR_RFOFIP | EESIPR_CNDIP | + EESIPR_DLCIP | EESIPR_CDIP | EESIPR_TROIP | + EESIPR_RMAFIP | EESIPR_RRFIP | EESIPR_RTLFIP | + EESIPR_RTSFIP | EESIPR_PREIP | EESIPR_CERFIP, + + .tx_check = EESR_FTC | EESR_CND | EESR_DLC | EESR_CD | EESR_TRO, + .eesr_err_check = EESR_TWB | EESR_TABT | EESR_RABT | EESR_RFE | + EESR_RDE | EESR_RFRMER | EESR_TFE | EESR_TDE, + + .fdr_value = 0x0000070f, + + .apr = 1, + .mpr = 1, + .tpauser = 1, + .hw_swap = 1, + .rpadir = 1, + .no_ade = 1, + .xdfar_rw = 1, +}; #endif /* CONFIG_OF */

static void sh_eth_set_rate_sh7724(struct net_device *ndev) @@ -3131,6 +3166,7 @@ static const struct of_device_id sh_eth_match_table[] = { { .compatible = "renesas,ether-r8a7794", .data = &rcar_gen2_data }, { .compatible = "renesas,gether-r8a77980", .data = &r8a77980_data }, { .compatible = "renesas,ether-r7s72100", .data = &r7s72100_data }, + { .compatible = "renesas,ether-r7s9210", .data = &r7s9210_data }, { .compatible = "renesas,rcar-gen1-ether", .data = &rcar_gen1_data }, { .compatible = "renesas,rcar-gen2-ether", .data = &rcar_gen2_data }, { }

From: Paolo Abeni pabeni@redhat.com

[ Upstream commit 25a8238f4cc8425d4aade4f9041be468d0e8aa2e ]

Only the police action allows us to specify an arbitrary numeric value for the control action. This change introduces an explicit test case for the above feature and then leverage it for testing the kernel behavior for invalid control actions (reject).

Signed-off-by: Paolo Abeni pabeni@redhat.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin alexander.levin@microsoft.com --- .../tc-testing/tc-tests/actions/police.json | 48 +++++++++++++++++++ 1 file changed, 48 insertions(+)

diff --git a/tools/testing/selftests/tc-testing/tc-tests/actions/police.json b/tools/testing/selftests/tc-testing/tc-tests/actions/police.json index f03763d81617..30f9b54bd666 100644 --- a/tools/testing/selftests/tc-testing/tc-tests/actions/police.json +++ b/tools/testing/selftests/tc-testing/tc-tests/actions/police.json @@ -312,6 +312,54 @@ "$TC actions flush action police" ] }, + { + "id": "6aaf", + "name": "Add police actions with conform-exceed control pass/pipe [with numeric values]", + "category": [ + "actions", + "police" + ], + "setup": [ + [ + "$TC actions flush action police", + 0, + 1, + 255 + ] + ], + "cmdUnderTest": "$TC actions add action police rate 3mbit burst 250k conform-exceed 0/3 index 1", + "expExitCode": "0", + "verifyCmd": "$TC actions get action police index 1", + "matchPattern": "action order [0-9]*: police 0x1 rate 3Mbit burst 250Kb mtu 2Kb action pass/pipe", + "matchCount": "1", + "teardown": [ + "$TC actions flush action police" + ] + }, + { + "id": "29b1", + "name": "Add police actions with conform-exceed control <invalid>/drop", + "category": [ + "actions", + "police" + ], + "setup": [ + [ + "$TC actions flush action police", + 0, + 1, + 255 + ] + ], + "cmdUnderTest": "$TC actions add action police rate 3mbit burst 250k conform-exceed 10/drop index 1", + "expExitCode": "255", + "verifyCmd": "$TC actions ls action police", + "matchPattern": "action order [0-9]*: police 0x1 rate 3Mbit burst 250Kb mtu 2Kb action ", + "matchCount": "0", + "teardown": [ + "$TC actions flush action police" + ] + }, { "id": "c26f", "name": "Add police action with invalid peakrate value",

From: Lorenzo Bianconi lorenzo.bianconi@redhat.com

[ Upstream commit 1eb507903665442360a959136dfa3234c43db085 ]

Do not start to aggregate packets in a A-MSDU frame (converting the first subframe to A-MSDU, adding the header) if max_tx_fragments or max_amsdu_subframes limits are already exceeded by it. In particular, this happens when drivers set the limit to 1 to avoid A-MSDUs at all.

Signed-off-by: Lorenzo Bianconi lorenzo.bianconi@redhat.com [reword commit message to be more precise] Signed-off-by: Johannes Berg johannes.berg@intel.com Signed-off-by: Sasha Levin alexander.levin@microsoft.com --- net/mac80211/tx.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c index 667a73d6eb5c..1aac5e3c7eee 100644 --- a/net/mac80211/tx.c +++ b/net/mac80211/tx.c @@ -3208,9 +3208,6 @@ static bool ieee80211_amsdu_aggregate(struct ieee80211_sub_if_data *sdata, if (skb->len + head->len > max_amsdu_len) goto out;

- if (!ieee80211_amsdu_prepare_head(sdata, fast_tx, head)) - goto out; - nfrags = 1 + skb_shinfo(skb)->nr_frags; nfrags += 1 + skb_shinfo(head)->nr_frags; frag_tail = &skb_shinfo(head)->frag_list; @@ -3226,6 +3223,9 @@ static bool ieee80211_amsdu_aggregate(struct ieee80211_sub_if_data *sdata, if (max_frags && nfrags > max_frags) goto out;

+ if (!ieee80211_amsdu_prepare_head(sdata, fast_tx, head)) + goto out; + /* * Pad out the previous subframe to a multiple of 4 by adding the * padding to the next one, that's being added. Note that head->len

From: Stefan Raspl stefan.raspl@de.ibm.com

[ Upstream commit 58f33cfe73076b6497bada4f7b5bda961ed68083 ]

Python3 returns a float for a regular division - switch to a division operator that returns an integer. Furthermore, filters return a generator object instead of the actual list - wrap result in yet another list, which makes it still work in both, Python2 and 3.

Signed-off-by: Stefan Raspl raspl@linux.ibm.com Signed-off-by: Radim Krčmář rkrcmar@redhat.com Signed-off-by: Sasha Levin alexander.levin@microsoft.com --- tools/kvm/kvm_stat/kvm_stat | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/tools/kvm/kvm_stat/kvm_stat b/tools/kvm/kvm_stat/kvm_stat index 56c4b3f8a01b..e10b90a8917a 100755 --- a/tools/kvm/kvm_stat/kvm_stat +++ b/tools/kvm/kvm_stat/kvm_stat @@ -759,7 +759,7 @@ class DebugfsProvider(Provider): if len(vms) == 0: self.do_read = False

- self.paths = filter(lambda x: "{}-".format(pid) in x, vms) + self.paths = list(filter(lambda x: "{}-".format(pid) in x, vms))

else: self.paths = [] @@ -1219,10 +1219,10 @@ class Tui(object): (x, term_width) = self.screen.getmaxyx() row = 2 for line in text: - start = (term_width - len(line)) / 2 + start = (term_width - len(line)) // 2 self.screen.addstr(row, start, line) row += 1 - self.screen.addstr(row + 1, (term_width - len(hint)) / 2, hint, + self.screen.addstr(row + 1, (term_width - len(hint)) // 2, hint, curses.A_STANDOUT) self.screen.getkey()

From: Vincent Whitchurch vincent.whitchurch@axis.com

[ Upstream commit d49b48f088c323dbacae44dfbe56d9c985c8a2a1 ]

gpiochip_add_data_with_key() adds the gpiochip to the gpio_devices list before of_gpiochip_add() is called, but it's only the latter which sets the ->of_xlate function pointer. gpiochip_find() can be called by someone else between these two actions, and it can find the chip and call of_gpiochip_match_node_and_xlate() which leads to the following crash due to a NULL ->of_xlate().

Unhandled prefetch abort: page domain fault (0x01b) at 0x00000000 Modules linked in: leds_gpio(+) gpio_generic(+) CPU: 0 PID: 830 Comm: insmod Not tainted 4.18.0+ #43 Hardware name: ARM-Versatile Express PC is at (null) LR is at of_gpiochip_match_node_and_xlate+0x2c/0x38 Process insmod (pid: 830, stack limit = 0x(ptrval)) (of_gpiochip_match_node_and_xlate) from (gpiochip_find+0x48/0x84) (gpiochip_find) from (of_get_named_gpiod_flags+0xa8/0x238) (of_get_named_gpiod_flags) from (gpiod_get_from_of_node+0x2c/0xc8) (gpiod_get_from_of_node) from (devm_fwnode_get_index_gpiod_from_child+0xb8/0x144) (devm_fwnode_get_index_gpiod_from_child) from (gpio_led_probe+0x208/0x3c4 [leds_gpio]) (gpio_led_probe [leds_gpio]) from (platform_drv_probe+0x48/0x9c) (platform_drv_probe) from (really_probe+0x1d0/0x3d4) (really_probe) from (driver_probe_device+0x78/0x1c0) (driver_probe_device) from (__driver_attach+0x120/0x13c) (__driver_attach) from (bus_for_each_dev+0x68/0xb4) (bus_for_each_dev) from (bus_add_driver+0x1a8/0x268) (bus_add_driver) from (driver_register+0x78/0x10c) (driver_register) from (do_one_initcall+0x54/0x1fc) (do_one_initcall) from (do_init_module+0x64/0x1f4) (do_init_module) from (load_module+0x2198/0x26ac) (load_module) from (sys_finit_module+0xe0/0x110) (sys_finit_module) from (ret_fast_syscall+0x0/0x54)

One way to fix this would be to rework the hairy registration sequence in gpiochip_add_data_with_key(), but since I'd probably introduce a couple of new bugs if I attempted that, simply add a check for a non-NULL of_xlate function pointer in of_gpiochip_match_node_and_xlate(). This works since the driver looking for the gpio will simply fail to find the gpio and defer its probe and be reprobed when the driver which is registering the gpiochip has fully completed its probe.

Signed-off-by: Vincent Whitchurch vincent.whitchurch@axis.com Signed-off-by: Linus Walleij linus.walleij@linaro.org Signed-off-by: Sasha Levin alexander.levin@microsoft.com --- drivers/gpio/gpiolib-of.c | 1 + 1 file changed, 1 insertion(+)

diff --git a/drivers/gpio/gpiolib-of.c b/drivers/gpio/gpiolib-of.c index 53a14ee8ad6d..a704d2e74421 100644 --- a/drivers/gpio/gpiolib-of.c +++ b/drivers/gpio/gpiolib-of.c @@ -31,6 +31,7 @@ static int of_gpiochip_match_node_and_xlate(struct gpio_chip *chip, void *data) struct of_phandle_args *gpiospec = data;

return chip->gpiodev->dev.of_node == gpiospec->np && + chip->of_xlate && chip->of_xlate(chip, gpiospec, NULL) >= 0; }

From: Will Deacon will.deacon@arm.com

[ Upstream commit 3fcbb8260a87efb691d837e8cd24e81f65b3eb70 ]

In 4.19-rc1, Eugeniy reported weird boot and IO errors on ARC HSDK

| INFO: task syslogd:77 blocked for more than 10 seconds. | Not tainted 4.19.0-rc1-00007-gf213acea4e88 #40 | "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this | message. | syslogd D 0 77 76 0x00000000 | | Stack Trace: | __switch_to+0x0/0xac | __schedule+0x1b2/0x730 | io_schedule+0x5c/0xc0 | __lock_page+0x98/0xdc | find_lock_entry+0x38/0x100 | shmem_getpage_gfp.isra.3+0x82/0xbfc | shmem_fault+0x46/0x138 | handle_mm_fault+0x5bc/0x924 | do_page_fault+0x100/0x2b8 | ret_from_exception+0x0/0x8

He bisected to 84c6591103db ("locking/atomics, asm-generic/bitops/lock.h: Rewrite using atomic_fetch_*()")

This commit however only unmasked the real issue introduced by commit 4aef66c8ae9 ("locking/atomic, arch/arc: Fix build") which missed the retry-if-scond-failed branch in atomic_fetch_##op() macros.

The bisected commit started using atomic_fetch_##op() macros for building the rest of atomics.

Fixes: 4aef66c8ae9 ("locking/atomic, arch/arc: Fix build") Reported-by: Eugeniy Paltsev paltsev@synopsys.com Acked-by: Peter Zijlstra (Intel) peterz@infradead.org Signed-off-by: Will Deacon will.deacon@arm.com Signed-off-by: Vineet Gupta vgupta@synopsys.com [vgupta: wrote changelog] Signed-off-by: Sasha Levin alexander.levin@microsoft.com --- arch/arc/include/asm/atomic.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arc/include/asm/atomic.h b/arch/arc/include/asm/atomic.h index 11859287c52a..c98b59ac0612 100644 --- a/arch/arc/include/asm/atomic.h +++ b/arch/arc/include/asm/atomic.h @@ -84,7 +84,7 @@ static inline int atomic_fetch_##op(int i, atomic_t *v) \ "1: llock %[orig], [%[ctr]] \n" \ " " #asm_op " %[val], %[orig], %[i] \n" \ " scond %[val], [%[ctr]] \n" \ - " \n" \ + " bnz 1b \n" \ : [val] "=&r" (val), \ [orig] "=&r" (orig) \ : [ctr] "r" (&v->counter), \

From: "Dennis Zhou (Facebook)" dennisszhou@gmail.com

[ Upstream commit 6b06546206868f723f2061d703a3c3c378dcbf4c ]

This reverts commit 4c6994806f708559c2812b73501406e21ae5dcd0.

Destroying blkgs is tricky because of the nature of the relationship. A blkg should go away when either a blkcg or a request_queue goes away. However, blkg's pin the blkcg to ensure they remain valid. To break this cycle, when a blkcg is offlined, blkgs put back their css ref. This eventually lets css_free() get called which frees the blkcg.

The above commit (4c6994806f70) breaks this order of events by trying to destroy blkgs in css_free(). As the blkgs still hold references to the blkcg, css_free() is never called.

The race between blkcg_bio_issue_check() and cgroup_rmdir() will be addressed in the following patch by delaying destruction of a blkg until all writeback associated with the blkcg has been finished.

Fixes: 4c6994806f70 ("blk-throttle: fix race between blkcg_bio_issue_check() and cgroup_rmdir()") Reviewed-by: Josef Bacik josef@toxicpanda.com Signed-off-by: Dennis Zhou dennisszhou@gmail.com Cc: Jiufei Xue jiufei.xue@linux.alibaba.com Cc: Joseph Qi joseph.qi@linux.alibaba.com Cc: Tejun Heo tj@kernel.org Cc: Jens Axboe axboe@kernel.dk Signed-off-by: Jens Axboe axboe@kernel.dk Signed-off-by: Sasha Levin alexander.levin@microsoft.com --- block/blk-cgroup.c | 78 ++++++++------------------------------ include/linux/blk-cgroup.h | 1 - 2 files changed, 16 insertions(+), 63 deletions(-)

diff --git a/block/blk-cgroup.c b/block/blk-cgroup.c index eb85cb87c40f..ec868373b11b 100644 --- a/block/blk-cgroup.c +++ b/block/blk-cgroup.c @@ -307,28 +307,11 @@ struct blkcg_gq *blkg_lookup_create(struct blkcg *blkcg, } }

-static void blkg_pd_offline(struct blkcg_gq *blkg) -{ - int i; - - lockdep_assert_held(blkg->q->queue_lock); - lockdep_assert_held(&blkg->blkcg->lock); - - for (i = 0; i < BLKCG_MAX_POLS; i++) { - struct blkcg_policy *pol = blkcg_policy[i]; - - if (blkg->pd[i] && !blkg->pd[i]->offline && - pol->pd_offline_fn) { - pol->pd_offline_fn(blkg->pd[i]); - blkg->pd[i]->offline = true; - } - } -} - static void blkg_destroy(struct blkcg_gq *blkg) { struct blkcg *blkcg = blkg->blkcg; struct blkcg_gq *parent = blkg->parent; + int i;

lockdep_assert_held(blkg->q->queue_lock); lockdep_assert_held(&blkcg->lock); @@ -337,6 +320,13 @@ static void blkg_destroy(struct blkcg_gq *blkg) WARN_ON_ONCE(list_empty(&blkg->q_node)); WARN_ON_ONCE(hlist_unhashed(&blkg->blkcg_node));

+ for (i = 0; i < BLKCG_MAX_POLS; i++) { + struct blkcg_policy *pol = blkcg_policy[i]; + + if (blkg->pd[i] && pol->pd_offline_fn) + pol->pd_offline_fn(blkg->pd[i]); + } + if (parent) { blkg_rwstat_add_aux(&parent->stat_bytes, &blkg->stat_bytes); blkg_rwstat_add_aux(&parent->stat_ios, &blkg->stat_ios); @@ -379,7 +369,6 @@ static void blkg_destroy_all(struct request_queue *q) struct blkcg *blkcg = blkg->blkcg;

spin_lock(&blkcg->lock); - blkg_pd_offline(blkg); blkg_destroy(blkg); spin_unlock(&blkcg->lock); } @@ -1006,54 +995,21 @@ static struct cftype blkcg_legacy_files[] = { * @css: css of interest * * This function is called when @css is about to go away and responsible - * for offlining all blkgs pd and killing all wbs associated with @css. - * blkgs pd offline should be done while holding both q and blkcg locks. - * As blkcg lock is nested inside q lock, this function performs reverse - * double lock dancing. + * for shooting down all blkgs associated with @css. blkgs should be + * removed while holding both q and blkcg locks. As blkcg lock is nested + * inside q lock, this function performs reverse double lock dancing. * * This is the blkcg counterpart of ioc_release_fn(). */ static void blkcg_css_offline(struct cgroup_subsys_state *css) { struct blkcg *blkcg = css_to_blkcg(css); - struct blkcg_gq *blkg;

spin_lock_irq(&blkcg->lock);

- hlist_for_each_entry(blkg, &blkcg->blkg_list, blkcg_node) { - struct request_queue *q = blkg->q; - - if (spin_trylock(q->queue_lock)) { - blkg_pd_offline(blkg); - spin_unlock(q->queue_lock); - } else { - spin_unlock_irq(&blkcg->lock); - cpu_relax(); - spin_lock_irq(&blkcg->lock); - } - } - - spin_unlock_irq(&blkcg->lock); - - wb_blkcg_offline(blkcg); -} - -/** - * blkcg_destroy_all_blkgs - destroy all blkgs associated with a blkcg - * @blkcg: blkcg of interest - * - * This function is called when blkcg css is about to free and responsible for - * destroying all blkgs associated with @blkcg. - * blkgs should be removed while holding both q and blkcg locks. As blkcg lock - * is nested inside q lock, this function performs reverse double lock dancing. - */ -static void blkcg_destroy_all_blkgs(struct blkcg *blkcg) -{ - spin_lock_irq(&blkcg->lock); while (!hlist_empty(&blkcg->blkg_list)) { struct blkcg_gq *blkg = hlist_entry(blkcg->blkg_list.first, - struct blkcg_gq, - blkcg_node); + struct blkcg_gq, blkcg_node); struct request_queue *q = blkg->q;

if (spin_trylock(q->queue_lock)) { @@ -1065,7 +1021,10 @@ static void blkcg_destroy_all_blkgs(struct blkcg *blkcg) spin_lock_irq(&blkcg->lock); } } + spin_unlock_irq(&blkcg->lock); + + wb_blkcg_offline(blkcg); }

static void blkcg_css_free(struct cgroup_subsys_state *css) @@ -1073,8 +1032,6 @@ static void blkcg_css_free(struct cgroup_subsys_state *css) struct blkcg *blkcg = css_to_blkcg(css); int i;

- blkcg_destroy_all_blkgs(blkcg); - mutex_lock(&blkcg_pol_mutex);

list_del(&blkcg->all_blkcgs_node); @@ -1412,11 +1369,8 @@ void blkcg_deactivate_policy(struct request_queue *q,

list_for_each_entry(blkg, &q->blkg_list, q_node) { if (blkg->pd[pol->plid]) { - if (!blkg->pd[pol->plid]->offline && - pol->pd_offline_fn) { + if (pol->pd_offline_fn) pol->pd_offline_fn(blkg->pd[pol->plid]); - blkg->pd[pol->plid]->offline = true; - } pol->pd_free_fn(blkg->pd[pol->plid]); blkg->pd[pol->plid] = NULL; } diff --git a/include/linux/blk-cgroup.h b/include/linux/blk-cgroup.h index 0fce47d5acb1..5d46b83d4820 100644 --- a/include/linux/blk-cgroup.h +++ b/include/linux/blk-cgroup.h @@ -88,7 +88,6 @@ struct blkg_policy_data { /* the blkg and policy id this per-policy data belongs to */ struct blkcg_gq *blkg; int plid; - bool offline; };

/*

From: Xiao Ni xni@redhat.com

[ Upstream commit 1d0ffd264204eba1861865560f1f7f7a92919384 ]

In raid10 reshape_request it gets max_sectors in read_balance. If the underlayer disks have bad blocks, the max_sectors is less than last. It will call goto read_more many times. It calls raise_barrier(conf, sectors_done != 0) every time. In this condition sectors_done is not 0. So the value passed to the argument force of raise_barrier is true.

In raise_barrier it checks conf->barrier when force is true. If force is true and conf->barrier is 0, it panic. In this case reshape_request submits bio to under layer disks. And in the callback function of the bio it calls lower_barrier. If the bio finishes before calling raise_barrier again, it can trigger the BUG_ON.

Add one pair of raise_barrier/lower_barrier to fix this bug.

Signed-off-by: Xiao Ni xni@redhat.com Suggested-by: Neil Brown neilb@suse.com Signed-off-by: Shaohua Li shli@fb.com Signed-off-by: Sasha Levin alexander.levin@microsoft.com --- drivers/md/raid10.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c index 35bd3a62451b..8c93d44a052c 100644 --- a/drivers/md/raid10.c +++ b/drivers/md/raid10.c @@ -4531,11 +4531,12 @@ static sector_t reshape_request(struct mddev *mddev, sector_t sector_nr, allow_barrier(conf); }

+ raise_barrier(conf, 0); read_more: /* Now schedule reads for blocks from sector_nr to last */ r10_bio = raid10_alloc_init_r10buf(conf); r10_bio->state = 0; - raise_barrier(conf, sectors_done != 0); + raise_barrier(conf, 1); atomic_set(&r10_bio->remaining, 0); r10_bio->mddev = mddev; r10_bio->sector = sector_nr; @@ -4631,6 +4632,8 @@ static sector_t reshape_request(struct mddev *mddev, sector_t sector_nr, if (sector_nr <= last) goto read_more;

+ lower_barrier(conf); + /* Now that we have done the whole section we can * update reshape_progress */

From: Thomas Falcon tlfalcon@linux.vnet.ibm.com

[ Upstream commit f611a5b4a51fa36a0aa792be474f5d6aacaef7e3 ]

Check the return codes of these functions and halt reset in case of failure. The driver will remain in a dormant state until the next reset event, when device initialization will be re-attempted.

Signed-off-by: Thomas Falcon tlfalcon@linux.vnet.ibm.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin alexander.levin@microsoft.com --- drivers/net/ethernet/ibm/ibmvnic.c | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/ibm/ibmvnic.c b/drivers/net/ethernet/ibm/ibmvnic.c index ffe7acbeaa22..d834308adf95 100644 --- a/drivers/net/ethernet/ibm/ibmvnic.c +++ b/drivers/net/ethernet/ibm/ibmvnic.c @@ -1841,11 +1841,17 @@ static int do_reset(struct ibmvnic_adapter *adapter, adapter->map_id = 1; release_rx_pools(adapter); release_tx_pools(adapter); - init_rx_pools(netdev); - init_tx_pools(netdev); + rc = init_rx_pools(netdev); + if (rc) + return rc; + rc = init_tx_pools(netdev); + if (rc) + return rc;

release_napi(adapter); - init_napi(adapter); + rc = init_napi(adapter); + if (rc) + return rc; } else { rc = reset_tx_pools(adapter); if (rc)

From: Tushar Dave tushar.n.dave@oracle.com

[ Upstream commit 9db39f4d4f94b61e4b64b077f6ddb2bdfb533a88 ]

Helper bpf_msg_pull_data() mistakenly reuses variable 'offset' while linearizing multiple scatterlist elements. Variable 'offset' is used to find first starting scatterlist element i.e. msg->data = sg_virt(&sg[first_sg]) + start - offset"

Use different variable name while linearizing multiple scatterlist elements so that value contained in variable 'offset' won't get overwritten.

Fixes: 015632bb30da ("bpf: sk_msg program helper bpf_sk_msg_pull_data") Signed-off-by: Tushar Dave tushar.n.dave@oracle.com Signed-off-by: Daniel Borkmann daniel@iogearbox.net Signed-off-by: Sasha Levin alexander.levin@microsoft.com --- net/core/filter.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/net/core/filter.c b/net/core/filter.c index a80b57e4aaed..963ee2e88861 100644 --- a/net/core/filter.c +++ b/net/core/filter.c @@ -2282,7 +2282,7 @@ static const struct bpf_func_proto bpf_msg_cork_bytes_proto = { BPF_CALL_4(bpf_msg_pull_data, struct sk_msg_buff *, msg, u32, start, u32, end, u64, flags) { - unsigned int len = 0, offset = 0, copy = 0; + unsigned int len = 0, offset = 0, copy = 0, poffset = 0; int bytes = end - start, bytes_sg_total; struct scatterlist *sg = msg->sg_data; int first_sg, last_sg, i, shift; @@ -2338,16 +2338,15 @@ BPF_CALL_4(bpf_msg_pull_data, if (unlikely(!page)) return -ENOMEM; p = page_address(page); - offset = 0;

i = first_sg; do { from = sg_virt(&sg[i]); len = sg[i].length; - to = p + offset; + to = p + poffset;

memcpy(to, from, len); - offset += len; + poffset += len; sg[i].length = 0; put_page(sg_page(&sg[i]));

From: Masahiro Yamada yamada.masahiro@socionext.com

[ Upstream commit 38f5d8d8cbb2ffa2b54315118185332329ec891c ]

This driver currently emits a STOP if the next message is not I2C_MD_RD. It should not do it because it disturbs the I2C_RDWR ioctl, where read/write transactions are combined without STOP between.

Issue STOP only when the message is the last one _or_ flagged with I2C_M_STOP.

Fixes: dd6fd4a32793 ("i2c: uniphier: add UniPhier FIFO-less I2C driver") Signed-off-by: Masahiro Yamada yamada.masahiro@socionext.com Signed-off-by: Wolfram Sang wsa@the-dreams.de Signed-off-by: Sasha Levin alexander.levin@microsoft.com --- drivers/i2c/busses/i2c-uniphier.c | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/drivers/i2c/busses/i2c-uniphier.c b/drivers/i2c/busses/i2c-uniphier.c index bb181b088291..454f914ae66d 100644 --- a/drivers/i2c/busses/i2c-uniphier.c +++ b/drivers/i2c/busses/i2c-uniphier.c @@ -248,11 +248,8 @@ static int uniphier_i2c_master_xfer(struct i2c_adapter *adap, return ret;

for (msg = msgs; msg < emsg; msg++) { - /* If next message is read, skip the stop condition */ - bool stop = !(msg + 1 < emsg && msg[1].flags & I2C_M_RD); - /* but, force it if I2C_M_STOP is set */ - if (msg->flags & I2C_M_STOP) - stop = true; + /* Emit STOP if it is the last message or I2C_M_STOP is set. */ + bool stop = (msg + 1 == emsg) || (msg->flags & I2C_M_STOP);

ret = uniphier_i2c_master_xfer_one(adap, msg, stop); if (ret)

From: Jia-Ju Bai baijiaju1990@gmail.com

[ Upstream commit 16fe10cf92783ed9ceb182d6ea2b8adf5e8ec1b8 ]

The kernel module may sleep with holding a spinlock.

The function call paths (from bottom to top) in Linux-4.16 are:

[FUNC] usleep_range drivers/net/ethernet/cadence/macb_main.c, 648: usleep_range in macb_halt_tx drivers/net/ethernet/cadence/macb_main.c, 730: macb_halt_tx in macb_tx_error_task drivers/net/ethernet/cadence/macb_main.c, 721: _raw_spin_lock_irqsave in macb_tx_error_task

To fix this bug, usleep_range() is replaced with udelay().

This bug is found by my static analysis tool DSAC.

Signed-off-by: Jia-Ju Bai baijiaju1990@gmail.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin alexander.levin@microsoft.com --- drivers/net/ethernet/cadence/macb_main.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/cadence/macb_main.c b/drivers/net/ethernet/cadence/macb_main.c index 515d96e32143..c4d7479938e2 100644 --- a/drivers/net/ethernet/cadence/macb_main.c +++ b/drivers/net/ethernet/cadence/macb_main.c @@ -648,7 +648,7 @@ static int macb_halt_tx(struct macb *bp) if (!(status & MACB_BIT(TGO))) return 0;

- usleep_range(10, 250); + udelay(250); } while (time_before(halt_time, timeout));

return -ETIMEDOUT;

From: Dan Carpenter dan.carpenter@oracle.com

[ Upstream commit 8442938c3a2177ba16043b3a935f2c78266ad399 ]

The "chandef->center_freq1" variable is a u32 but "freq" is a u16 so we are truncating away the high bits. I noticed this bug because in commit 9cf0a0b4b64a ("cfg80211: Add support for 60GHz band channels 5 and 6") we made "freq <= 56160 + 2160 * 6" a valid requency when before it was only "freq <= 56160 + 2160 * 4" that was valid. It introduces a static checker warning:

net/wireless/util.c:1571 ieee80211_chandef_to_operating_class() warn: always true condition '(freq <= 56160 + 2160 * 6) => (0-u16max <= 69120)'

But really we probably shouldn't have been truncating the high bits away to begin with.

Signed-off-by: Dan Carpenter dan.carpenter@oracle.com Signed-off-by: Johannes Berg johannes.berg@intel.com Signed-off-by: Sasha Levin alexander.levin@microsoft.com --- net/wireless/util.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/wireless/util.c b/net/wireless/util.c index 3c654cd7ba56..908bf5b6d89e 100644 --- a/net/wireless/util.c +++ b/net/wireless/util.c @@ -1374,7 +1374,7 @@ bool ieee80211_chandef_to_operating_class(struct cfg80211_chan_def *chandef, u8 *op_class) { u8 vht_opclass; - u16 freq = chandef->center_freq1; + u32 freq = chandef->center_freq1;

if (freq >= 2412 && freq <= 2472) { if (chandef->width > NL80211_CHAN_WIDTH_40)

From: "Dreyfuss, Haim" haim.dreyfuss@intel.com

[ Upstream commit abd76d255d69d70206c01b9cb19ba36a9c1df6a1 ]

In commit 9236c4523e5b ("mac80211: limit wmm params to comply with ETSI requirements"), we have limited the WMM parameters to comply with 802.11 and ETSI standard. Mistakenly the TXOP value was caluclated wrong. Fix it by taking the minimum between 802.11 to ETSI to make sure we are not violating both.

Fixes: e552af058148 ("mac80211: limit wmm params to comply with ETSI requirements") Signed-off-by: Haim Dreyfuss haim.dreyfuss@intel.com Signed-off-by: Luca Coelho luciano.coelho@intel.com Signed-off-by: Johannes Berg johannes.berg@intel.com Signed-off-by: Sasha Levin alexander.levin@microsoft.com --- net/mac80211/util.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/net/mac80211/util.c b/net/mac80211/util.c index c80187d6e6bb..93b5bb849ad7 100644 --- a/net/mac80211/util.c +++ b/net/mac80211/util.c @@ -1151,8 +1151,7 @@ void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata, qparam->cw_min = max_t(u16, qparam->cw_min, wmm_ac->cw_min); qparam->cw_max = max_t(u16, qparam->cw_max, wmm_ac->cw_max); qparam->aifs = max_t(u8, qparam->aifs, wmm_ac->aifsn); - qparam->txop = !qparam->txop ? wmm_ac->cot / 32 : - min_t(u16, qparam->txop, wmm_ac->cot / 32); + qparam->txop = min_t(u16, qparam->txop, wmm_ac->cot / 32); rcu_read_unlock(); }

From: Ilan Peer ilan.peer@intel.com

[ Upstream commit 0007e94355fdb71a1cf5dba0754155cba08f0666 ]

When performing a channel switch flow for a managed interface, the flow did not update the bandwidth of the AP station and the rate scale algorithm. In case of a channel width downgrade, this would result with the rate scale algorithm using a bandwidth that does not match the interface channel configuration.

Fix this by updating the AP station bandwidth and rate scaling algorithm before the actual channel change in case of a bandwidth downgrade, or after the actual channel change in case of a bandwidth upgrade.

Signed-off-by: Ilan Peer ilan.peer@intel.com Signed-off-by: Luca Coelho luciano.coelho@intel.com Signed-off-by: Johannes Berg johannes.berg@intel.com Signed-off-by: Sasha Levin alexander.levin@microsoft.com --- net/mac80211/mlme.c | 53 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 53 insertions(+)

diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c index a59187c016e0..22b699460176 100644 --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -978,6 +978,10 @@ static void ieee80211_chswitch_work(struct work_struct *work) */

if (sdata->reserved_chanctx) { + struct ieee80211_supported_band *sband = NULL; + struct sta_info *mgd_sta = NULL; + enum ieee80211_sta_rx_bandwidth bw = IEEE80211_STA_RX_BW_20; + /* * with multi-vif csa driver may call ieee80211_csa_finish() * many times while waiting for other interfaces to use their @@ -986,6 +990,48 @@ static void ieee80211_chswitch_work(struct work_struct *work) if (sdata->reserved_ready) goto out;

+ if (sdata->vif.bss_conf.chandef.width != + sdata->csa_chandef.width) { + /* + * For managed interface, we need to also update the AP + * station bandwidth and align the rate scale algorithm + * on the bandwidth change. Here we only consider the + * bandwidth of the new channel definition (as channel + * switch flow does not have the full HT/VHT/HE + * information), assuming that if additional changes are + * required they would be done as part of the processing + * of the next beacon from the AP. + */ + switch (sdata->csa_chandef.width) { + case NL80211_CHAN_WIDTH_20_NOHT: + case NL80211_CHAN_WIDTH_20: + default: + bw = IEEE80211_STA_RX_BW_20; + break; + case NL80211_CHAN_WIDTH_40: + bw = IEEE80211_STA_RX_BW_40; + break; + case NL80211_CHAN_WIDTH_80: + bw = IEEE80211_STA_RX_BW_80; + break; + case NL80211_CHAN_WIDTH_80P80: + case NL80211_CHAN_WIDTH_160: + bw = IEEE80211_STA_RX_BW_160; + break; + } + + mgd_sta = sta_info_get(sdata, ifmgd->bssid); + sband = + local->hw.wiphy->bands[sdata->csa_chandef.chan->band]; + } + + if (sdata->vif.bss_conf.chandef.width > + sdata->csa_chandef.width) { + mgd_sta->sta.bandwidth = bw; + rate_control_rate_update(local, sband, mgd_sta, + IEEE80211_RC_BW_CHANGED); + } + ret = ieee80211_vif_use_reserved_context(sdata); if (ret) { sdata_info(sdata, @@ -996,6 +1042,13 @@ static void ieee80211_chswitch_work(struct work_struct *work) goto out; }

+ if (sdata->vif.bss_conf.chandef.width < + sdata->csa_chandef.width) { + mgd_sta->sta.bandwidth = bw; + rate_control_rate_update(local, sband, mgd_sta, + IEEE80211_RC_BW_CHANGED); + } + goto out; }

From: Amir Goldstein amir73il@gmail.com

[ Upstream commit 9bdda4e9cf2dcecb60a0683b10ffb8cd7e5f2f45 ]

Commit 92183a42898d ("fsnotify: fix ignore mask logic in send_to_group()") acknoledges the use case of ignoring an event on an inode mark, because of an ignore mask on a mount mark of the same group (i.e. I want to get all events on this file, except for the events that came from that mount).

This change depends on correctly merging the inode marks and mount marks group lists, so that the mount mark ignore mask would be tested in send_to_group(). Alas, the merging of the lists did not take into account the case where event in question is not in the mask of any of the mount marks.

To fix this, completely remove the tests for inode and mount event masks from the lists merging code.

Fixes: 92183a42898d ("fsnotify: fix ignore mask logic in send_to_group") Signed-off-by: Amir Goldstein amir73il@gmail.com Signed-off-by: Jan Kara jack@suse.cz Signed-off-by: Sasha Levin alexander.levin@microsoft.com --- fs/notify/fsnotify.c | 13 +++---------- 1 file changed, 3 insertions(+), 10 deletions(-)

diff --git a/fs/notify/fsnotify.c b/fs/notify/fsnotify.c index f174397b63a0..ababdbfab537 100644 --- a/fs/notify/fsnotify.c +++ b/fs/notify/fsnotify.c @@ -351,16 +351,9 @@ int fsnotify(struct inode *to_tell, __u32 mask, const void *data, int data_is,

iter_info.srcu_idx = srcu_read_lock(&fsnotify_mark_srcu);

- if ((mask & FS_MODIFY) || - (test_mask & to_tell->i_fsnotify_mask)) { - iter_info.marks[FSNOTIFY_OBJ_TYPE_INODE] = - fsnotify_first_mark(&to_tell->i_fsnotify_marks); - } - - if (mnt && ((mask & FS_MODIFY) || - (test_mask & mnt->mnt_fsnotify_mask))) { - iter_info.marks[FSNOTIFY_OBJ_TYPE_INODE] = - fsnotify_first_mark(&to_tell->i_fsnotify_marks); + iter_info.marks[FSNOTIFY_OBJ_TYPE_INODE] = + fsnotify_first_mark(&to_tell->i_fsnotify_marks); + if (mnt) { iter_info.marks[FSNOTIFY_OBJ_TYPE_VFSMOUNT] = fsnotify_first_mark(&mnt->mnt_fsnotify_marks); }

From: Ivan Mikhaylov ivan@de.ibm.com

[ Upstream commit bf68066fccb10fce6bbffdda24ee2ae314c9c5b2 ]

__emac_calc_base_mr1 was used instead of __emac4_calc_base_mr1 by copy-paste mistake for emac4syn.

Fixes: 45d6e545505fd32edb812f085be7de45b6a5c0af ("net/ibm/emac: add 8192 rx/tx fifo size") Signed-off-by: Ivan Mikhaylov ivan@de.ibm.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin alexander.levin@microsoft.com --- drivers/net/ethernet/ibm/emac/core.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/ibm/emac/core.c b/drivers/net/ethernet/ibm/emac/core.c index 354c0982847b..372664686309 100644 --- a/drivers/net/ethernet/ibm/emac/core.c +++ b/drivers/net/ethernet/ibm/emac/core.c @@ -494,9 +494,6 @@ static u32 __emac_calc_base_mr1(struct emac_instance *dev, int tx_size, int rx_s case 16384: ret |= EMAC_MR1_RFS_16K; break; - case 8192: - ret |= EMAC4_MR1_RFS_8K; - break; case 4096: ret |= EMAC_MR1_RFS_4K; break; @@ -537,6 +534,9 @@ static u32 __emac4_calc_base_mr1(struct emac_instance *dev, int tx_size, int rx_ case 16384: ret |= EMAC4_MR1_RFS_16K; break; + case 8192: + ret |= EMAC4_MR1_RFS_8K; + break; case 4096: ret |= EMAC4_MR1_RFS_4K; break;

From: Zong Li zong@andestech.com

[ Upstream commit c17df7960534357fb74074c2f514c831d4a9cf5a ]

The compiler predefined macro 'NDS32_ABI_2' had been removed, it should use the '__NDS32_ABI_2' here.

Signed-off-by: Zong Li zong@andestech.com Acked-by: Greentime Hu greentime@andestech.com Signed-off-by: Greentime Hu greentime@andestech.com Signed-off-by: Sasha Levin alexander.levin@microsoft.com --- arch/nds32/kernel/traps.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/nds32/kernel/traps.c b/arch/nds32/kernel/traps.c index a6205fd4db52..f0e974347c26 100644 --- a/arch/nds32/kernel/traps.c +++ b/arch/nds32/kernel/traps.c @@ -137,7 +137,7 @@ static void __dump(struct task_struct *tsk, unsigned long *base_reg) !((unsigned long)base_reg & 0x3) && ((unsigned long)base_reg >= TASK_SIZE)) { unsigned long next_fp; -#if !defined(NDS32_ABI_2) +#if !defined(__NDS32_ABI_2) ret_addr = base_reg[0]; next_fp = base_reg[1]; #else

From: Zong Li zong@andestech.com

[ Upstream commit 6cce95a6c7d288ac2126eee4b95df448b9015b84 ]

The pointer argument of macro need to be taken out once first, and then use the new pointer in the macro body.

In kernel/trace/trace.c, get_user(ch, ubuf++) causes the unexpected increment after expand the macro.

Signed-off-by: Zong Li zong@andestech.com Acked-by: Greentime Hu greentime@andestech.com Signed-off-by: Greentime Hu greentime@andestech.com Signed-off-by: Sasha Levin alexander.levin@microsoft.com --- arch/nds32/include/asm/uaccess.h | 26 ++++++++++++++------------ 1 file changed, 14 insertions(+), 12 deletions(-)

diff --git a/arch/nds32/include/asm/uaccess.h b/arch/nds32/include/asm/uaccess.h index 18a009f3804d..3f771e0595e8 100644 --- a/arch/nds32/include/asm/uaccess.h +++ b/arch/nds32/include/asm/uaccess.h @@ -78,8 +78,9 @@ static inline void set_fs(mm_segment_t fs) #define get_user(x,p) \ ({ \ long __e = -EFAULT; \ - if(likely(access_ok(VERIFY_READ, p, sizeof(*p)))) { \ - __e = __get_user(x,p); \ + const __typeof__(*(p)) __user *__p = (p); \ + if(likely(access_ok(VERIFY_READ, __p, sizeof(*__p)))) { \ + __e = __get_user(x, __p); \ } else \ x = 0; \ __e; \ @@ -99,10 +100,10 @@ static inline void set_fs(mm_segment_t fs)

#define __get_user_err(x,ptr,err) \ do { \ - unsigned long __gu_addr = (unsigned long)(ptr); \ + const __typeof__(*(ptr)) __user *__gu_addr = (ptr); \ unsigned long __gu_val; \ - __chk_user_ptr(ptr); \ - switch (sizeof(*(ptr))) { \ + __chk_user_ptr(__gu_addr); \ + switch (sizeof(*(__gu_addr))) { \ case 1: \ __get_user_asm("lbi",__gu_val,__gu_addr,err); \ break; \ @@ -119,7 +120,7 @@ do { \ BUILD_BUG(); \ break; \ } \ - (x) = (__typeof__(*(ptr)))__gu_val; \ + (x) = (__typeof__(*(__gu_addr)))__gu_val; \ } while (0)

#define __get_user_asm(inst,x,addr,err) \ @@ -169,8 +170,9 @@ do { \ #define put_user(x,p) \ ({ \ long __e = -EFAULT; \ - if(likely(access_ok(VERIFY_WRITE, p, sizeof(*p)))) { \ - __e = __put_user(x,p); \ + __typeof__(*(p)) __user *__p = (p); \ + if(likely(access_ok(VERIFY_WRITE, __p, sizeof(*__p)))) { \ + __e = __put_user(x, __p); \ } \ __e; \ }) @@ -189,10 +191,10 @@ do { \

#define __put_user_err(x,ptr,err) \ do { \ - unsigned long __pu_addr = (unsigned long)(ptr); \ - __typeof__(*(ptr)) __pu_val = (x); \ - __chk_user_ptr(ptr); \ - switch (sizeof(*(ptr))) { \ + __typeof__(*(ptr)) __user *__pu_addr = (ptr); \ + __typeof__(*(__pu_addr)) __pu_val = (x); \ + __chk_user_ptr(__pu_addr); \ + switch (sizeof(*(__pu_addr))) { \ case 1: \ __put_user_asm("sbi",__pu_val,__pu_addr,err); \ break; \

From: Naoya Horiguchi n-horiguchi@ah.jp.nec.com

[ Upstream commit 904506562e0856f2535d876407d087c9459d345b ]

Currently we get the following compiler warning:

slabinfo.c:854:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (s->object_size < min_objsize) ^

due to the mismatch of signed/unsigned comparison. ->object_size and ->slab_size are never expected to be negative, so let's define them as unsigned int.

[n-horiguchi@ah.jp.nec.com: convert everything - none of these can be negative] Link: http://lkml.kernel.org/r/20180826234947.GA9787@hori1.linux.bs1.fc.nec.co.jp Link: http://lkml.kernel.org/r/1535103134-20239-1-git-send-email-n-horiguchi@ah.jp... Signed-off-by: Naoya Horiguchi n-horiguchi@ah.jp.nec.com Reviewed-by: Andrew Morton akpm@linux-foundation.org Cc: Matthew Wilcox willy@infradead.org Signed-off-by: Andrew Morton akpm@linux-foundation.org Signed-off-by: Linus Torvalds torvalds@linux-foundation.org Signed-off-by: Sasha Levin alexander.levin@microsoft.com --- tools/vm/slabinfo.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/vm/slabinfo.c b/tools/vm/slabinfo.c index f82c2eaa859d..334b16db0ebb 100644 --- a/tools/vm/slabinfo.c +++ b/tools/vm/slabinfo.c @@ -30,8 +30,8 @@ struct slabinfo { int alias; int refs; int aliases, align, cache_dma, cpu_slabs, destroy_by_rcu; - int hwcache_align, object_size, objs_per_slab; - int sanity_checks, slab_size, store_user, trace; + unsigned int hwcache_align, object_size, objs_per_slab; + unsigned int sanity_checks, slab_size, store_user, trace; int order, poison, reclaim_account, red_zone; unsigned long partial, objects, slabs, objects_partial, objects_total; unsigned long alloc_fastpath, alloc_slowpath;

From: Ilya Dryomov idryomov@gmail.com

[ Upstream commit 8aaff15168cfbc7c8980fdb0e8a585f1afe56ec0 ]

syzbot reported a use-after-free in ceph_destroy_options(), called from ceph_mount(). The problem was that create_fs_client() consumed the opt pointer on some errors, but not on all of them. Make sure it always consumes both libceph and ceph options.

Reported-by: syzbot+8ab6f1042021b4eed062@syzkaller.appspotmail.com Signed-off-by: Ilya Dryomov idryomov@gmail.com Reviewed-by: "Yan, Zheng" zyan@redhat.com Signed-off-by: Sasha Levin alexander.levin@microsoft.com --- fs/ceph/super.c | 16 +++++++++++----- 1 file changed, 11 insertions(+), 5 deletions(-)

diff --git a/fs/ceph/super.c b/fs/ceph/super.c index 95a3b3ac9b6e..60f81ac369b5 100644 --- a/fs/ceph/super.c +++ b/fs/ceph/super.c @@ -603,6 +603,8 @@ static int extra_mon_dispatch(struct ceph_client *client, struct ceph_msg *msg)

/* * create a new fs client + * + * Success or not, this function consumes @fsopt and @opt. */ static struct ceph_fs_client *create_fs_client(struct ceph_mount_options *fsopt, struct ceph_options *opt) @@ -610,17 +612,20 @@ static struct ceph_fs_client *create_fs_client(struct ceph_mount_options *fsopt, struct ceph_fs_client *fsc; int page_count; size_t size; - int err = -ENOMEM; + int err;

fsc = kzalloc(sizeof(*fsc), GFP_KERNEL); - if (!fsc) - return ERR_PTR(-ENOMEM); + if (!fsc) { + err = -ENOMEM; + goto fail; + }

fsc->client = ceph_create_client(opt, fsc); if (IS_ERR(fsc->client)) { err = PTR_ERR(fsc->client); goto fail; } + opt = NULL; /* fsc->client now owns this */

fsc->client->extra_mon_dispatch = extra_mon_dispatch; fsc->client->osdc.abort_on_full = true; @@ -678,6 +683,9 @@ static struct ceph_fs_client *create_fs_client(struct ceph_mount_options *fsopt, ceph_destroy_client(fsc->client); fail: kfree(fsc); + if (opt) + ceph_destroy_options(opt); + destroy_mount_options(fsopt); return ERR_PTR(err); }

@@ -1042,8 +1050,6 @@ static struct dentry *ceph_mount(struct file_system_type *fs_type, fsc = create_fs_client(fsopt, opt); if (IS_ERR(fsc)) { res = ERR_CAST(fsc); - destroy_mount_options(fsopt); - ceph_destroy_options(opt); goto out_final; }

From: Sudeep Holla sudeep.holla@arm.com

[ Upstream commit 96d529bac562574600eda85726fcfa3eef6dde8e ]

Firmware can provide zero as values for sustained performance level and corresponding sustained frequency in kHz in order to hide the actual frequencies and provide only abstract values. It may endup with divide by zero scenario resulting in kernel panic.

Let's set the multiplication factor to one if either one or both of them (sustained_perf_level and sustained_freq) are set to zero.

Fixes: a9e3fbfaa0ff ("firmware: arm_scmi: add initial support for performance protocol") Reported-by: Ionela Voinescu ionela.voinescu@arm.com Signed-off-by: Sudeep Holla sudeep.holla@arm.com Signed-off-by: Olof Johansson olof@lixom.net Signed-off-by: Sasha Levin alexander.levin@microsoft.com --- drivers/firmware/arm_scmi/perf.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/firmware/arm_scmi/perf.c b/drivers/firmware/arm_scmi/perf.c index 2a219b1261b1..49cb74f54a10 100644 --- a/drivers/firmware/arm_scmi/perf.c +++ b/drivers/firmware/arm_scmi/perf.c @@ -166,7 +166,13 @@ scmi_perf_domain_attributes_get(const struct scmi_handle *handle, u32 domain, le32_to_cpu(attr->sustained_freq_khz); dom_info->sustained_perf_level = le32_to_cpu(attr->sustained_perf_level); - dom_info->mult_factor = (dom_info->sustained_freq_khz * 1000) / + if (!dom_info->sustained_freq_khz || + !dom_info->sustained_perf_level) + /* CPUFreq converts to kHz, hence default 1000 */ + dom_info->mult_factor = 1000; + else + dom_info->mult_factor = + (dom_info->sustained_freq_khz * 1000) / dom_info->sustained_perf_level; memcpy(dom_info->name, attr->name, SCMI_MAX_STR_SIZE); }