April 2018 - Linux-stable-mirror

Patch "netlink: make sure nladdr has correct size in netlink_connect()" has been added to the 4.15-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled netlink: make sure nladdr has correct size in netlink_connect() to the 4.15-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: netlink-make-sure-nladdr-has-correct-size-in-netlink_connect.patch and it can be found in the queue-4.15 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Tue Apr 10 23:19:36 CEST 2018 From: Alexander Potapenko <glider(a)google.com> Date: Fri, 23 Mar 2018 13:49:02 +0100 Subject: netlink: make sure nladdr has correct size in netlink_connect() From: Alexander Potapenko <glider(a)google.com> [ Upstream commit 7880287981b60a6808f39f297bb66936e8bdf57a ] KMSAN reports use of uninitialized memory in the case when |alen| is smaller than sizeof(struct sockaddr_nl), and therefore |nladdr| isn't fully copied from the userspace. Signed-off-by: Alexander Potapenko <glider(a)google.com> Fixes: 1da177e4c3f41524 ("Linux-2.6.12-rc2") Reviewed-by: Eric Dumazet <edumazet(a)google.com> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- net/netlink/af_netlink.c | 3 +++ 1 file changed, 3 insertions(+) --- a/net/netlink/af_netlink.c +++ b/net/netlink/af_netlink.c @@ -1052,6 +1052,9 @@ static int netlink_connect(struct socket if (addr->sa_family != AF_NETLINK) return -EINVAL; + if (alen < sizeof(struct sockaddr_nl)) + return -EINVAL; + if ((nladdr->nl_groups || nladdr->nl_pid) && !netlink_allowed(sock, NL_CFG_F_NONROOT_SEND)) return -EPERM; Patches currently in stable-queue which might be from glider(a)google.com are queue-4.15/netlink-make-sure-nladdr-has-correct-size-in-netlink_connect.patch

6 years, 9 months

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Patch "net/sched: fix NULL dereference on the error path of tcf_skbmod_init()" has been added to the 4.15-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled net/sched: fix NULL dereference on the error path of tcf_skbmod_init() to the 4.15-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: net-sched-fix-null-dereference-on-the-error-path-of-tcf_skbmod_init.patch and it can be found in the queue-4.15 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Tue Apr 10 23:19:36 CEST 2018 From: Davide Caratti <dcaratti(a)redhat.com> Date: Fri, 16 Mar 2018 00:00:57 +0100 Subject: net/sched: fix NULL dereference on the error path of tcf_skbmod_init() From: Davide Caratti <dcaratti(a)redhat.com> [ Upstream commit 2d433610176d6569e8b3a28f67bc72235bf69efc ] when the following command # tc action replace action skbmod swap mac index 100 is run for the first time, and tcf_skbmod_init() fails to allocate struct tcf_skbmod_params, tcf_skbmod_cleanup() calls kfree_rcu(NULL), thus causing the following error: BUG: unable to handle kernel NULL pointer dereference at 0000000000000008 IP: __call_rcu+0x23/0x2b0 PGD 8000000034057067 P4D 8000000034057067 PUD 74937067 PMD 0 Oops: 0002 [#1] SMP PTI Modules linked in: act_skbmod(E) psample ip6table_filter ip6_tables iptable_filter binfmt_misc ext4 snd_hda_codec_generic snd_hda_intel snd_hda_codec crct10dif_pclmul mbcache jbd2 crc32_pclmul snd_hda_core ghash_clmulni_intel snd_hwdep pcbc snd_seq snd_seq_device snd_pcm aesni_intel snd_timer crypto_simd glue_helper snd cryptd virtio_balloon joydev soundcore pcspkr i2c_piix4 nfsd auth_rpcgss nfs_acl lockd grace sunrpc ip_tables xfs libcrc32c ata_generic pata_acpi qxl drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ttm drm virtio_console virtio_net virtio_blk ata_piix libata crc32c_intel virtio_pci serio_raw virtio_ring virtio i2c_core floppy dm_mirror dm_region_hash dm_log dm_mod [last unloaded: act_skbmod] CPU: 3 PID: 3144 Comm: tc Tainted: G E 4.16.0-rc4.act_vlan.orig+ #403 Hardware name: Red Hat KVM, BIOS 0.5.1 01/01/2011 RIP: 0010:__call_rcu+0x23/0x2b0 RSP: 0018:ffffbd2e403e7798 EFLAGS: 00010246 RAX: ffffffffc0872080 RBX: ffff981d34bff780 RCX: 00000000ffffffff RDX: ffffffff922a5f00 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000001 R09: 000000000000021f R10: 000000003d003000 R11: 0000000000aaaaaa R12: 0000000000000000 R13: ffffffff922a5f00 R14: 0000000000000001 R15: ffff981d3b698c2c FS: 00007f3678292740(0000) GS:ffff981d3fd80000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000008 CR3: 000000007c57a006 CR4: 00000000001606e0 Call Trace: __tcf_idr_release+0x79/0xf0 tcf_skbmod_init+0x1d1/0x210 [act_skbmod] tcf_action_init_1+0x2cc/0x430 tcf_action_init+0xd3/0x1b0 tc_ctl_action+0x18b/0x240 rtnetlink_rcv_msg+0x29c/0x310 ? _cond_resched+0x15/0x30 ? __kmalloc_node_track_caller+0x1b9/0x270 ? rtnl_calcit.isra.28+0x100/0x100 netlink_rcv_skb+0xd2/0x110 netlink_unicast+0x17c/0x230 netlink_sendmsg+0x2cd/0x3c0 sock_sendmsg+0x30/0x40 ___sys_sendmsg+0x27a/0x290 ? filemap_map_pages+0x34a/0x3a0 ? __handle_mm_fault+0xbfd/0xe20 __sys_sendmsg+0x51/0x90 do_syscall_64+0x6e/0x1a0 entry_SYSCALL_64_after_hwframe+0x3d/0xa2 RIP: 0033:0x7f36776a3ba0 RSP: 002b:00007fff4703b618 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fff4703b740 RCX: 00007f36776a3ba0 RDX: 0000000000000000 RSI: 00007fff4703b690 RDI: 0000000000000003 RBP: 000000005aaaba36 R08: 0000000000000002 R09: 0000000000000000 R10: 00007fff4703b0a0 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff4703b754 R14: 0000000000000001 R15: 0000000000669f60 Code: 5d e9 42 da ff ff 66 90 0f 1f 44 00 00 41 57 41 56 41 55 49 89 d5 41 54 55 48 89 fd 53 48 83 ec 08 40 f6 c7 07 0f 85 19 02 00 00 <48> 89 75 08 48 c7 45 00 00 00 00 00 9c 58 0f 1f 44 00 00 49 89 RIP: __call_rcu+0x23/0x2b0 RSP: ffffbd2e403e7798 CR2: 0000000000000008 Fix it in tcf_skbmod_cleanup(), ensuring that kfree_rcu(p, ...) is called only when p is not NULL. Fixes: 86da71b57383 ("net_sched: Introduce skbmod action") Signed-off-by: Davide Caratti <dcaratti(a)redhat.com> Acked-by: Jiri Pirko <jiri(a)mellanox.com> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- net/sched/act_skbmod.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/net/sched/act_skbmod.c +++ b/net/sched/act_skbmod.c @@ -190,7 +190,8 @@ static void tcf_skbmod_cleanup(struct tc struct tcf_skbmod_params *p; p = rcu_dereference_protected(d->skbmod_p, 1); - kfree_rcu(p, rcu); + if (p) + kfree_rcu(p, rcu); } static int tcf_skbmod_dump(struct sk_buff *skb, struct tc_action *a, Patches currently in stable-queue which might be from dcaratti(a)redhat.com are queue-4.15/net-sched-fix-null-dereference-in-the-error-path-of-tcf_vlan_init.patch queue-4.15/net-sched-fix-null-dereference-in-the-error-path-of-tcf_bpf_init.patch queue-4.15/net-sched-fix-null-dereference-on-the-error-path-of-tcf_skbmod_init.patch queue-4.15/net-sched-fix-null-dereference-in-the-error-path-of-tcf_sample_init.patch queue-4.15/net-sched-fix-null-dereference-in-the-error-path-of-tunnel_key_init.patch

6 years, 9 months

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Patch "net/sched: fix NULL dereference in the error path of tunnel_key_init()" has been added to the 4.15-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled net/sched: fix NULL dereference in the error path of tunnel_key_init() to the 4.15-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: net-sched-fix-null-dereference-in-the-error-path-of-tunnel_key_init.patch and it can be found in the queue-4.15 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Tue Apr 10 23:19:36 CEST 2018 From: Davide Caratti <dcaratti(a)redhat.com> Date: Fri, 16 Mar 2018 00:00:55 +0100 Subject: net/sched: fix NULL dereference in the error path of tunnel_key_init() From: Davide Caratti <dcaratti(a)redhat.com> [ Upstream commit abdadd3cfd3e7ea3da61ac774f84777d1f702058 ] when the following command # tc action add action tunnel_key unset index 100 is run for the first time, and tunnel_key_init() fails to allocate struct tcf_tunnel_key_params, tunnel_key_release() dereferences NULL pointers. This causes the following error: BUG: unable to handle kernel NULL pointer dereference at 0000000000000010 IP: tunnel_key_release+0xd/0x40 [act_tunnel_key] PGD 8000000033787067 P4D 8000000033787067 PUD 74646067 PMD 0 Oops: 0000 [#1] SMP PTI Modules linked in: act_tunnel_key(E) act_csum ip6table_filter ip6_tables iptable_filter binfmt_misc ext4 mbcache jbd2 crct10dif_pclmul crc32_pclmul snd_hda_codec_generic ghash_clmulni_intel snd_hda_intel pcbc snd_hda_codec snd_hda_core snd_hwdep snd_seq aesni_intel snd_seq_device crypto_simd glue_helper snd_pcm cryptd joydev snd_timer pcspkr virtio_balloon snd i2c_piix4 soundcore nfsd auth_rpcgss nfs_acl lockd grace sunrpc ip_tables xfs libcrc32c ata_generic pata_acpi qxl drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ttm virtio_net virtio_blk drm virtio_console crc32c_intel ata_piix serio_raw i2c_core virtio_pci libata virtio_ring virtio floppy dm_mirror dm_region_hash dm_log dm_mod CPU: 2 PID: 3101 Comm: tc Tainted: G E 4.16.0-rc4.act_vlan.orig+ #403 Hardware name: Red Hat KVM, BIOS 0.5.1 01/01/2011 RIP: 0010:tunnel_key_release+0xd/0x40 [act_tunnel_key] RSP: 0018:ffffba46803b7768 EFLAGS: 00010286 RAX: ffffffffc09010a0 RBX: 0000000000000000 RCX: 0000000000000024 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff99ee336d7480 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000044 R10: 0000000000000220 R11: ffff99ee79d73131 R12: 0000000000000000 R13: ffff99ee32d67610 R14: ffff99ee7671dc38 R15: 00000000fffffff4 FS: 00007febcb2cd740(0000) GS:ffff99ee7fd00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000010 CR3: 000000007c8e4005 CR4: 00000000001606e0 Call Trace: __tcf_idr_release+0x79/0xf0 tunnel_key_init+0xd9/0x460 [act_tunnel_key] tcf_action_init_1+0x2cc/0x430 tcf_action_init+0xd3/0x1b0 tc_ctl_action+0x18b/0x240 rtnetlink_rcv_msg+0x29c/0x310 ? _cond_resched+0x15/0x30 ? __kmalloc_node_track_caller+0x1b9/0x270 ? rtnl_calcit.isra.28+0x100/0x100 netlink_rcv_skb+0xd2/0x110 netlink_unicast+0x17c/0x230 netlink_sendmsg+0x2cd/0x3c0 sock_sendmsg+0x30/0x40 ___sys_sendmsg+0x27a/0x290 __sys_sendmsg+0x51/0x90 do_syscall_64+0x6e/0x1a0 entry_SYSCALL_64_after_hwframe+0x3d/0xa2 RIP: 0033:0x7febca6deba0 RSP: 002b:00007ffe7b0dd128 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007ffe7b0dd250 RCX: 00007febca6deba0 RDX: 0000000000000000 RSI: 00007ffe7b0dd1a0 RDI: 0000000000000003 RBP: 000000005aaa90cb R08: 0000000000000002 R09: 0000000000000000 R10: 00007ffe7b0dcba0 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe7b0dd264 R14: 0000000000000001 R15: 0000000000669f60 Code: 44 00 00 8b 0d b5 23 00 00 48 8b 87 48 10 00 00 48 8b 3c c8 e9 a5 e5 d8 c3 0f 1f 44 00 00 0f 1f 44 00 00 53 48 8b 9f b0 00 00 00 <83> 7b 10 01 74 0b 48 89 df 31 f6 5b e9 f2 fa 7f c3 48 8b 7b 18 RIP: tunnel_key_release+0xd/0x40 [act_tunnel_key] RSP: ffffba46803b7768 CR2: 0000000000000010 Fix this in tunnel_key_release(), ensuring 'param' is not NULL before dereferencing it. Fixes: d0f6dd8a914f ("net/sched: Introduce act_tunnel_key") Signed-off-by: Davide Caratti <dcaratti(a)redhat.com> Acked-by: Jiri Pirko <jiri(a)mellanox.com> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- net/sched/act_tunnel_key.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) --- a/net/sched/act_tunnel_key.c +++ b/net/sched/act_tunnel_key.c @@ -208,11 +208,12 @@ static void tunnel_key_release(struct tc struct tcf_tunnel_key_params *params; params = rcu_dereference_protected(t->params, 1); + if (params) { + if (params->tcft_action == TCA_TUNNEL_KEY_ACT_SET) + dst_release(&params->tcft_enc_metadata->dst); - if (params->tcft_action == TCA_TUNNEL_KEY_ACT_SET) - dst_release(&params->tcft_enc_metadata->dst); - - kfree_rcu(params, rcu); + kfree_rcu(params, rcu); + } } static int tunnel_key_dump_addresses(struct sk_buff *skb, Patches currently in stable-queue which might be from dcaratti(a)redhat.com are queue-4.15/net-sched-fix-null-dereference-in-the-error-path-of-tcf_vlan_init.patch queue-4.15/net-sched-fix-null-dereference-in-the-error-path-of-tcf_bpf_init.patch queue-4.15/net-sched-fix-null-dereference-on-the-error-path-of-tcf_skbmod_init.patch queue-4.15/net-sched-fix-null-dereference-in-the-error-path-of-tcf_sample_init.patch queue-4.15/net-sched-fix-null-dereference-in-the-error-path-of-tunnel_key_init.patch

6 years, 9 months

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Patch "net/sched: fix NULL dereference in the error path of tcf_vlan_init()" has been added to the 4.15-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled net/sched: fix NULL dereference in the error path of tcf_vlan_init() to the 4.15-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: net-sched-fix-null-dereference-in-the-error-path-of-tcf_vlan_init.patch and it can be found in the queue-4.15 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Tue Apr 10 23:19:36 CEST 2018 From: Davide Caratti <dcaratti(a)redhat.com> Date: Fri, 16 Mar 2018 00:00:53 +0100 Subject: net/sched: fix NULL dereference in the error path of tcf_vlan_init() From: Davide Caratti <dcaratti(a)redhat.com> [ Upstream commit 1edf8abe04090c4f41a85e42c66638be1ee69156 ] when the following command # tc actions replace action vlan pop index 100 is run for the first time, and tcf_vlan_init() fails allocating struct tcf_vlan_params, tcf_vlan_cleanup() calls kfree_rcu(NULL, ...). This causes the following error: BUG: unable to handle kernel NULL pointer dereference at 0000000000000018 IP: __call_rcu+0x23/0x2b0 PGD 80000000760a2067 P4D 80000000760a2067 PUD 742c1067 PMD 0 Oops: 0002 [#1] SMP PTI Modules linked in: act_vlan(E) ip6table_filter ip6_tables iptable_filter binfmt_misc ext4 snd_hda_codec_generic snd_hda_intel mbcache snd_hda_codec jbd2 snd_hda_core crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc snd_hwdep snd_seq snd_seq_device snd_pcm aesni_intel crypto_simd snd_timer glue_helper snd cryptd joydev soundcore virtio_balloon pcspkr i2c_piix4 nfsd auth_rpcgss nfs_acl lockd grace sunrpc ip_tables xfs libcrc32c ata_generic pata_acpi qxl drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ttm drm virtio_console virtio_blk virtio_net ata_piix crc32c_intel libata virtio_pci i2c_core virtio_ring serio_raw virtio floppy dm_mirror dm_region_hash dm_log dm_mod [last unloaded: act_vlan] CPU: 3 PID: 3119 Comm: tc Tainted: G E 4.16.0-rc4.act_vlan.orig+ #403 Hardware name: Red Hat KVM, BIOS 0.5.1 01/01/2011 RIP: 0010:__call_rcu+0x23/0x2b0 RSP: 0018:ffffaac3005fb798 EFLAGS: 00010246 RAX: ffffffffc0704080 RBX: ffff97f2b4bbe900 RCX: 00000000ffffffff RDX: ffffffffabca5f00 RSI: 0000000000000010 RDI: 0000000000000010 RBP: 0000000000000010 R08: 0000000000000001 R09: 0000000000000044 R10: 00000000fd003000 R11: ffff97f2faab5b91 R12: 0000000000000000 R13: ffffffffabca5f00 R14: ffff97f2fb80202c R15: 00000000fffffff4 FS: 00007f68f75b4740(0000) GS:ffff97f2ffd80000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000018 CR3: 0000000072b52001 CR4: 00000000001606e0 Call Trace: __tcf_idr_release+0x79/0xf0 tcf_vlan_init+0x168/0x270 [act_vlan] tcf_action_init_1+0x2cc/0x430 tcf_action_init+0xd3/0x1b0 tc_ctl_action+0x18b/0x240 rtnetlink_rcv_msg+0x29c/0x310 ? _cond_resched+0x15/0x30 ? __kmalloc_node_track_caller+0x1b9/0x270 ? rtnl_calcit.isra.28+0x100/0x100 netlink_rcv_skb+0xd2/0x110 netlink_unicast+0x17c/0x230 netlink_sendmsg+0x2cd/0x3c0 sock_sendmsg+0x30/0x40 ___sys_sendmsg+0x27a/0x290 ? filemap_map_pages+0x34a/0x3a0 ? __handle_mm_fault+0xbfd/0xe20 __sys_sendmsg+0x51/0x90 do_syscall_64+0x6e/0x1a0 entry_SYSCALL_64_after_hwframe+0x3d/0xa2 RIP: 0033:0x7f68f69c5ba0 RSP: 002b:00007fffd79c1118 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fffd79c1240 RCX: 00007f68f69c5ba0 RDX: 0000000000000000 RSI: 00007fffd79c1190 RDI: 0000000000000003 RBP: 000000005aaa708e R08: 0000000000000002 R09: 0000000000000000 R10: 00007fffd79c0ba0 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffd79c1254 R14: 0000000000000001 R15: 0000000000669f60 Code: 5d e9 42 da ff ff 66 90 0f 1f 44 00 00 41 57 41 56 41 55 49 89 d5 41 54 55 48 89 fd 53 48 83 ec 08 40 f6 c7 07 0f 85 19 02 00 00 <48> 89 75 08 48 c7 45 00 00 00 00 00 9c 58 0f 1f 44 00 00 49 89 RIP: __call_rcu+0x23/0x2b0 RSP: ffffaac3005fb798 CR2: 0000000000000018 fix this in tcf_vlan_cleanup(), ensuring that kfree_rcu(p, ...) is called only when p is not NULL. Fixes: 4c5b9d9642c8 ("act_vlan: VLAN action rewrite to use RCU lock/unlock and update") Acked-by: Jiri Pirko <jiri(a)mellanox.com> Acked-by: Manish Kurup <manish.kurup(a)verizon.com> Signed-off-by: Davide Caratti <dcaratti(a)redhat.com> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- net/sched/act_vlan.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/net/sched/act_vlan.c +++ b/net/sched/act_vlan.c @@ -225,7 +225,8 @@ static void tcf_vlan_cleanup(struct tc_a struct tcf_vlan_params *p; p = rcu_dereference_protected(v->vlan_p, 1); - kfree_rcu(p, rcu); + if (p) + kfree_rcu(p, rcu); } static int tcf_vlan_dump(struct sk_buff *skb, struct tc_action *a, Patches currently in stable-queue which might be from dcaratti(a)redhat.com are queue-4.15/net-sched-fix-null-dereference-in-the-error-path-of-tcf_vlan_init.patch queue-4.15/net-sched-fix-null-dereference-in-the-error-path-of-tcf_bpf_init.patch queue-4.15/net-sched-fix-null-dereference-on-the-error-path-of-tcf_skbmod_init.patch queue-4.15/net-sched-fix-null-dereference-in-the-error-path-of-tcf_sample_init.patch queue-4.15/net-sched-fix-null-dereference-in-the-error-path-of-tunnel_key_init.patch

6 years, 9 months

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Patch "net/sched: fix NULL dereference in the error path of tcf_sample_init()" has been added to the 4.15-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled net/sched: fix NULL dereference in the error path of tcf_sample_init() to the 4.15-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: net-sched-fix-null-dereference-in-the-error-path-of-tcf_sample_init.patch and it can be found in the queue-4.15 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Tue Apr 10 23:19:36 CEST 2018 From: Davide Caratti <dcaratti(a)redhat.com> Date: Fri, 16 Mar 2018 00:00:56 +0100 Subject: net/sched: fix NULL dereference in the error path of tcf_sample_init() From: Davide Caratti <dcaratti(a)redhat.com> [ Upstream commit 1f110e7cae09e6c6a144616480d1a9dd99c5208a ] when the following command # tc action add action sample rate 100 group 100 index 100 is run for the first time, and psample_group_get(100) fails to create a new group, tcf_sample_cleanup() calls psample_group_put(NULL), thus causing the following error: BUG: unable to handle kernel NULL pointer dereference at 000000000000001c IP: psample_group_put+0x15/0x71 [psample] PGD 8000000075775067 P4D 8000000075775067 PUD 7453c067 PMD 0 Oops: 0002 [#1] SMP PTI Modules linked in: act_sample(E) psample ip6table_filter ip6_tables iptable_filter binfmt_misc ext4 snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core mbcache jbd2 crct10dif_pclmul snd_hwdep crc32_pclmul snd_seq ghash_clmulni_intel pcbc snd_seq_device snd_pcm aesni_intel crypto_simd snd_timer glue_helper snd cryptd joydev pcspkr i2c_piix4 soundcore virtio_balloon nfsd auth_rpcgss nfs_acl lockd grace sunrpc ip_tables xfs libcrc32c ata_generic pata_acpi qxl drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ttm drm virtio_net ata_piix virtio_console virtio_blk libata serio_raw crc32c_intel virtio_pci i2c_core virtio_ring virtio floppy dm_mirror dm_region_hash dm_log dm_mod [last unloaded: act_tunnel_key] CPU: 2 PID: 5740 Comm: tc Tainted: G E 4.16.0-rc4.act_vlan.orig+ #403 Hardware name: Red Hat KVM, BIOS 0.5.1 01/01/2011 RIP: 0010:psample_group_put+0x15/0x71 [psample] RSP: 0018:ffffb8a80032f7d0 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000024 RDX: 0000000000000001 RSI: 0000000000000000 RDI: ffffffffc06d93c0 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000044 R10: 00000000bd003000 R11: ffff979fba04aa59 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: ffff979fbba3f22c FS: 00007f7638112740(0000) GS:ffff979fbfd00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000000001c CR3: 00000000734ea001 CR4: 00000000001606e0 Call Trace: __tcf_idr_release+0x79/0xf0 tcf_sample_init+0x125/0x1d0 [act_sample] tcf_action_init_1+0x2cc/0x430 tcf_action_init+0xd3/0x1b0 tc_ctl_action+0x18b/0x240 rtnetlink_rcv_msg+0x29c/0x310 ? _cond_resched+0x15/0x30 ? __kmalloc_node_track_caller+0x1b9/0x270 ? rtnl_calcit.isra.28+0x100/0x100 netlink_rcv_skb+0xd2/0x110 netlink_unicast+0x17c/0x230 netlink_sendmsg+0x2cd/0x3c0 sock_sendmsg+0x30/0x40 ___sys_sendmsg+0x27a/0x290 ? filemap_map_pages+0x34a/0x3a0 ? __handle_mm_fault+0xbfd/0xe20 __sys_sendmsg+0x51/0x90 do_syscall_64+0x6e/0x1a0 entry_SYSCALL_64_after_hwframe+0x3d/0xa2 RIP: 0033:0x7f7637523ba0 RSP: 002b:00007fff0473ef58 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fff0473f080 RCX: 00007f7637523ba0 RDX: 0000000000000000 RSI: 00007fff0473efd0 RDI: 0000000000000003 RBP: 000000005aaaac80 R08: 0000000000000002 R09: 0000000000000000 R10: 00007fff0473e9e0 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff0473f094 R14: 0000000000000001 R15: 0000000000669f60 Code: be 02 00 00 00 48 89 df e8 a9 fe ff ff e9 7c ff ff ff 0f 1f 40 00 0f 1f 44 00 00 53 48 89 fb 48 c7 c7 c0 93 6d c0 e8 db 20 8c ef <83> 6b 1c 01 74 10 48 c7 c7 c0 93 6d c0 ff 14 25 e8 83 83 b0 5b RIP: psample_group_put+0x15/0x71 [psample] RSP: ffffb8a80032f7d0 CR2: 000000000000001c Fix it in tcf_sample_cleanup(), ensuring that calls to psample_group_put(p) are done only when p is not NULL. Fixes: cadb9c9fdbc6 ("net/sched: act_sample: Fix error path in init") Signed-off-by: Davide Caratti <dcaratti(a)redhat.com> Acked-by: Jiri Pirko <jiri(a)mellanox.com> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- net/sched/act_sample.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/net/sched/act_sample.c +++ b/net/sched/act_sample.c @@ -103,7 +103,8 @@ static void tcf_sample_cleanup(struct tc psample_group = rtnl_dereference(s->psample_group); RCU_INIT_POINTER(s->psample_group, NULL); - psample_group_put(psample_group); + if (psample_group) + psample_group_put(psample_group); } static bool tcf_sample_dev_ok_push(struct net_device *dev) Patches currently in stable-queue which might be from dcaratti(a)redhat.com are queue-4.15/net-sched-fix-null-dereference-in-the-error-path-of-tcf_vlan_init.patch queue-4.15/net-sched-fix-null-dereference-in-the-error-path-of-tcf_bpf_init.patch queue-4.15/net-sched-fix-null-dereference-on-the-error-path-of-tcf_skbmod_init.patch queue-4.15/net-sched-fix-null-dereference-in-the-error-path-of-tcf_sample_init.patch queue-4.15/net-sched-fix-null-dereference-in-the-error-path-of-tunnel_key_init.patch

6 years, 9 months

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Patch "net/sched: fix NULL dereference in the error path of tcf_bpf_init()" has been added to the 4.15-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled net/sched: fix NULL dereference in the error path of tcf_bpf_init() to the 4.15-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: net-sched-fix-null-dereference-in-the-error-path-of-tcf_bpf_init.patch and it can be found in the queue-4.15 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Tue Apr 10 23:19:36 CEST 2018 From: Davide Caratti <dcaratti(a)redhat.com> Date: Fri, 6 Apr 2018 01:19:37 +0200 Subject: net/sched: fix NULL dereference in the error path of tcf_bpf_init() From: Davide Caratti <dcaratti(a)redhat.com> [ Upstream commit 3239534a79ee6f20cffd974173a1e62e0730e8ac ] when tcf_bpf_init_from_ops() fails (e.g. because of program having invalid number of instructions), tcf_bpf_cfg_cleanup() calls bpf_prog_put(NULL) or bpf_prog_destroy(NULL). Unless CONFIG_BPF_SYSCALL is unset, this causes the following error: BUG: unable to handle kernel NULL pointer dereference at 0000000000000020 PGD 800000007345a067 P4D 800000007345a067 PUD 340e1067 PMD 0 Oops: 0000 [#1] SMP PTI Modules linked in: act_bpf(E) ip6table_filter ip6_tables iptable_filter binfmt_misc ext4 mbcache jbd2 crct10dif_pclmul crc32_pclmul ghash_clmulni_intel snd_hda_codec_generic pcbc snd_hda_intel snd_hda_codec snd_hda_core snd_hwdep snd_seq snd_seq_device snd_pcm aesni_intel crypto_simd glue_helper cryptd joydev snd_timer snd virtio_balloon pcspkr soundcore i2c_piix4 nfsd auth_rpcgss nfs_acl lockd grace sunrpc ip_tables xfs libcrc32c ata_generic pata_acpi qxl drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ttm virtio_blk drm virtio_net virtio_console i2c_core crc32c_intel serio_raw virtio_pci ata_piix libata virtio_ring floppy virtio dm_mirror dm_region_hash dm_log dm_mod [last unloaded: act_bpf] CPU: 3 PID: 5654 Comm: tc Tainted: G E 4.16.0.bpf_test+ #408 Hardware name: Red Hat KVM, BIOS 0.5.1 01/01/2011 RIP: 0010:__bpf_prog_put+0xc/0xc0 RSP: 0018:ffff9594003ef728 EFLAGS: 00010202 RAX: 0000000000000000 RBX: ffff9594003ef758 RCX: 0000000000000024 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000044 R10: 0000000000000220 R11: ffff8a7ab9f17131 R12: 0000000000000000 R13: ffff8a7ab7c3c8e0 R14: 0000000000000001 R15: ffff8a7ab88f1054 FS: 00007fcb2f17c740(0000) GS:ffff8a7abfd80000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000020 CR3: 000000007c888006 CR4: 00000000001606e0 Call Trace: tcf_bpf_cfg_cleanup+0x2f/0x40 [act_bpf] tcf_bpf_cleanup+0x4c/0x70 [act_bpf] __tcf_idr_release+0x79/0x140 tcf_bpf_init+0x125/0x330 [act_bpf] tcf_action_init_1+0x2cc/0x430 ? get_page_from_freelist+0x3f0/0x11b0 tcf_action_init+0xd3/0x1b0 tc_ctl_action+0x18b/0x240 rtnetlink_rcv_msg+0x29c/0x310 ? _cond_resched+0x15/0x30 ? __kmalloc_node_track_caller+0x1b9/0x270 ? rtnl_calcit.isra.29+0x100/0x100 netlink_rcv_skb+0xd2/0x110 netlink_unicast+0x17c/0x230 netlink_sendmsg+0x2cd/0x3c0 sock_sendmsg+0x30/0x40 ___sys_sendmsg+0x27a/0x290 ? mem_cgroup_commit_charge+0x80/0x130 ? page_add_new_anon_rmap+0x73/0xc0 ? do_anonymous_page+0x2a2/0x560 ? __handle_mm_fault+0xc75/0xe20 __sys_sendmsg+0x58/0xa0 do_syscall_64+0x6e/0x1a0 entry_SYSCALL_64_after_hwframe+0x3d/0xa2 RIP: 0033:0x7fcb2e58eba0 RSP: 002b:00007ffc93c496c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007ffc93c497f0 RCX: 00007fcb2e58eba0 RDX: 0000000000000000 RSI: 00007ffc93c49740 RDI: 0000000000000003 RBP: 000000005ac6a646 R08: 0000000000000002 R09: 0000000000000000 R10: 00007ffc93c49120 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc93c49804 R14: 0000000000000001 R15: 000000000066afa0 Code: 5f 00 48 8b 43 20 48 c7 c7 70 2f 7c b8 c7 40 10 00 00 00 00 5b e9 a5 8b 61 00 0f 1f 44 00 00 0f 1f 44 00 00 41 54 55 48 89 fd 53 <48> 8b 47 20 f0 ff 08 74 05 5b 5d 41 5c c3 41 89 f4 0f 1f 44 00 RIP: __bpf_prog_put+0xc/0xc0 RSP: ffff9594003ef728 CR2: 0000000000000020 Fix it in tcf_bpf_cfg_cleanup(), ensuring that bpf_prog_{put,destroy}(f) is called only when f is not NULL. Fixes: bbc09e7842a5 ("net/sched: fix idr leak on the error path of tcf_bpf_init()") Reported-by: Lucas Bates <lucasb(a)mojatatu.com> Signed-off-by: Davide Caratti <dcaratti(a)redhat.com> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- net/sched/act_bpf.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) --- a/net/sched/act_bpf.c +++ b/net/sched/act_bpf.c @@ -248,10 +248,14 @@ static int tcf_bpf_init_from_efd(struct static void tcf_bpf_cfg_cleanup(const struct tcf_bpf_cfg *cfg) { - if (cfg->is_ebpf) - bpf_prog_put(cfg->filter); - else - bpf_prog_destroy(cfg->filter); + struct bpf_prog *filter = cfg->filter; + + if (filter) { + if (cfg->is_ebpf) + bpf_prog_put(filter); + else + bpf_prog_destroy(filter); + } kfree(cfg->bpf_ops); kfree(cfg->bpf_name); Patches currently in stable-queue which might be from dcaratti(a)redhat.com are queue-4.15/net-sched-fix-null-dereference-in-the-error-path-of-tcf_vlan_init.patch queue-4.15/net-sched-fix-null-dereference-in-the-error-path-of-tcf_bpf_init.patch queue-4.15/net-sched-fix-null-dereference-on-the-error-path-of-tcf_skbmod_init.patch queue-4.15/net-sched-fix-null-dereference-in-the-error-path-of-tcf_sample_init.patch queue-4.15/net-sched-fix-null-dereference-in-the-error-path-of-tunnel_key_init.patch

6 years, 9 months

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Patch "net sched actions: fix dumping which requires several messages to user space" has been added to the 4.15-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled net sched actions: fix dumping which requires several messages to user space to the 4.15-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: net-sched-actions-fix-dumping-which-requires-several-messages-to-user-space.patch and it can be found in the queue-4.15 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Tue Apr 10 23:19:36 CEST 2018 From: Craig Dillabaugh <cdillaba(a)mojatatu.com> Date: Mon, 26 Mar 2018 14:58:32 -0400 Subject: net sched actions: fix dumping which requires several messages to user space From: Craig Dillabaugh <cdillaba(a)mojatatu.com> [ Upstream commit 734549eb550c0c720bc89e50501f1b1e98cdd841 ] Fixes a bug in the tcf_dump_walker function that can cause some actions to not be reported when dumping a large number of actions. This issue became more aggrevated when cookies feature was added. In particular this issue is manifest when large cookie values are assigned to the actions and when enough actions are created that the resulting table must be dumped in multiple batches. The number of actions returned in each batch is limited by the total number of actions and the memory buffer size. With small cookies the numeric limit is reached before the buffer size limit, which avoids the code path triggering this bug. When large cookies are used buffer fills before the numeric limit, and the erroneous code path is hit. For example after creating 32 csum actions with the cookie aaaabbbbccccdddd $ tc actions ls action csum total acts 26 action order 0: csum (tcp) action continue index 1 ref 1 bind 0 cookie aaaabbbbccccdddd ..... action order 25: csum (tcp) action continue index 26 ref 1 bind 0 cookie aaaabbbbccccdddd total acts 6 action order 0: csum (tcp) action continue index 28 ref 1 bind 0 cookie aaaabbbbccccdddd ...... action order 5: csum (tcp) action continue index 32 ref 1 bind 0 cookie aaaabbbbccccdddd Note that the action with index 27 is omitted from the report. Fixes: 4b3550ef530c ("[NET_SCHED]: Use nla_nest_start/nla_nest_end")" Signed-off-by: Craig Dillabaugh <cdillaba(a)mojatatu.com> Acked-by: Jamal Hadi Salim <jhs(a)mojatatu.com> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- net/sched/act_api.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) --- a/net/sched/act_api.c +++ b/net/sched/act_api.c @@ -135,8 +135,10 @@ static int tcf_dump_walker(struct tcf_id continue; nest = nla_nest_start(skb, n_i); - if (!nest) + if (!nest) { + index--; goto nla_put_failure; + } err = tcf_action_dump_1(skb, p, 0, 0); if (err < 0) { index--; Patches currently in stable-queue which might be from cdillaba(a)mojatatu.com are queue-4.15/net-sched-actions-fix-dumping-which-requires-several-messages-to-user-space.patch

6 years, 9 months

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Patch "net/mlx5e: Sync netdev vxlan ports at open" has been added to the 4.15-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled net/mlx5e: Sync netdev vxlan ports at open to the 4.15-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: net-mlx5e-sync-netdev-vxlan-ports-at-open.patch and it can be found in the queue-4.15 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Tue Apr 10 23:19:36 CEST 2018 From: Shahar Klein <shahark(a)mellanox.com> Date: Tue, 20 Mar 2018 14:44:40 +0200 Subject: net/mlx5e: Sync netdev vxlan ports at open From: Shahar Klein <shahark(a)mellanox.com> [ Upstream commit a117f73dc2430443f23e18367fa545981129c1a6 ] When mlx5_core is loaded it is expected to sync ports with all vxlan devices so it can support vxlan encap/decap. This is done via udp_tunnel_get_rx_info(). Currently this call is set in mlx5e_nic_enable() and if the netdev is not in NETREG_REGISTERED state it will not be called. Normally on load the netdev state is not NETREG_REGISTERED so udp_tunnel_get_rx_info() will not be called. Moving udp_tunnel_get_rx_info() to mlx5e_open() so it will be called on netdev UP event and allow encap/decap. Fixes: 610e89e05c3f ("net/mlx5e: Don't sync netdev state when not registered") Signed-off-by: Shahar Klein <shahark(a)mellanox.com> Reviewed-by: Roi Dayan <roid(a)mellanox.com> Signed-off-by: Saeed Mahameed <saeedm(a)mellanox.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/net/ethernet/mellanox/mlx5/core/en_main.c | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-) --- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c @@ -2715,6 +2715,9 @@ int mlx5e_open(struct net_device *netdev mlx5_set_port_admin_status(priv->mdev, MLX5_PORT_UP); mutex_unlock(&priv->state_lock); + if (mlx5e_vxlan_allowed(priv->mdev)) + udp_tunnel_get_rx_info(netdev); + return err; } @@ -4428,12 +4431,6 @@ static void mlx5e_nic_enable(struct mlx5 #ifdef CONFIG_MLX5_CORE_EN_DCB mlx5e_dcbnl_init_app(priv); #endif - /* Device already registered: sync netdev system state */ - if (mlx5e_vxlan_allowed(mdev)) { - rtnl_lock(); - udp_tunnel_get_rx_info(netdev); - rtnl_unlock(); - } queue_work(priv->wq, &priv->set_rx_mode_work); Patches currently in stable-queue which might be from shahark(a)mellanox.com are queue-4.15/net-mlx5e-sync-netdev-vxlan-ports-at-open.patch

6 years, 9 months

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Patch "net/mlx5e: Verify coalescing parameters in range" has been added to the 4.15-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled net/mlx5e: Verify coalescing parameters in range to the 4.15-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: net-mlx5e-verify-coalescing-parameters-in-range.patch and it can be found in the queue-4.15 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Tue Apr 10 23:19:36 CEST 2018 From: Moshe Shemesh <moshe(a)mellanox.com> Date: Thu, 15 Feb 2018 12:41:48 +0200 Subject: net/mlx5e: Verify coalescing parameters in range From: Moshe Shemesh <moshe(a)mellanox.com> [ Upstream commit b392a2078b5e0094ff38aa0c9d2a31b3f607d4ef ] Add check of coalescing parameters received through ethtool are within range of values supported by the HW. Driver gets the coalescing rx/tx-usecs and rx/tx-frames as set by the users through ethtool. The ethtool support up to 32 bit value for each. However, mlx5 modify cq limits the coalescing time parameter to 12 bit and coalescing frames parameters to 16 bits. Return out of range error if user tries to set these parameters to higher values. Fixes: f62b8bb8f2d3 ('net/mlx5: Extend mlx5_core to support ConnectX-4 Ethernet functionality') Signed-off-by: Moshe Shemesh <moshe(a)mellanox.com> Signed-off-by: Saeed Mahameed <saeedm(a)mellanox.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) --- a/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c @@ -492,6 +492,9 @@ static int mlx5e_get_coalesce(struct net return mlx5e_ethtool_get_coalesce(priv, coal); } +#define MLX5E_MAX_COAL_TIME MLX5_MAX_CQ_PERIOD +#define MLX5E_MAX_COAL_FRAMES MLX5_MAX_CQ_COUNT + static void mlx5e_set_priv_channels_coalesce(struct mlx5e_priv *priv, struct ethtool_coalesce *coal) { @@ -526,6 +529,20 @@ int mlx5e_ethtool_set_coalesce(struct ml if (!MLX5_CAP_GEN(mdev, cq_moderation)) return -EOPNOTSUPP; + if (coal->tx_coalesce_usecs > MLX5E_MAX_COAL_TIME || + coal->rx_coalesce_usecs > MLX5E_MAX_COAL_TIME) { + netdev_info(priv->netdev, "%s: maximum coalesce time supported is %lu usecs\n", + __func__, MLX5E_MAX_COAL_TIME); + return -ERANGE; + } + + if (coal->tx_max_coalesced_frames > MLX5E_MAX_COAL_FRAMES || + coal->rx_max_coalesced_frames > MLX5E_MAX_COAL_FRAMES) { + netdev_info(priv->netdev, "%s: maximum coalesced frames supported is %lu\n", + __func__, MLX5E_MAX_COAL_FRAMES); + return -ERANGE; + } + mutex_lock(&priv->state_lock); new_channels.params = priv->channels.params; Patches currently in stable-queue which might be from moshe(a)mellanox.com are queue-4.15/net-mlx4_core-fix-memory-leak-while-delete-slave-s-resources.patch queue-4.15/net-mlx5e-verify-coalescing-parameters-in-range.patch

6 years, 9 months

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Patch "net/mlx5e: Set EQE based as default TX interrupt moderation mode" has been added to the 4.15-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled net/mlx5e: Set EQE based as default TX interrupt moderation mode to the 4.15-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: net-mlx5e-set-eqe-based-as-default-tx-interrupt-moderation-mode.patch and it can be found in the queue-4.15 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Tue Apr 10 23:19:36 CEST 2018 From: Tal Gilboa <talgi(a)mellanox.com> Date: Fri, 30 Mar 2018 15:50:08 -0700 Subject: net/mlx5e: Set EQE based as default TX interrupt moderation mode From: Tal Gilboa <talgi(a)mellanox.com> [ Upstream commit 48bfc39791b8b4a25f165e711f18b9c1617cefbc ] The default TX moderation mode was mistakenly set to CQE based. The intention was to add a control ability in order to improve some specific use-cases. In general, we prefer to use EQE based moderation as it gives much better numbers for the common cases. CQE based causes a degradation in the common case since it resets the moderation timer on CQE generation. This causes an issue when TSO is well utilized (large TSO sessions). The timer is set to 16us so traffic of ~64KB TSO sessions per second would mean timer reset (CQE per TSO session -> long time between CQEs). In this case we quickly reach the tcp_limit_output_bytes (256KB by default) and cause a halt in TX traffic. By setting EQE based moderation we make sure timer would expire after 16us regardless of the packet rate. This fixes an up to 40% packet rate and up to 23% bandwidth degradtions. Fixes: 0088cbbc4b66 ("net/mlx5e: Enable CQE based moderation on TX CQ") Signed-off-by: Tal Gilboa <talgi(a)mellanox.com> Signed-off-by: Saeed Mahameed <saeedm(a)mellanox.com> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/net/ethernet/mellanox/mlx5/core/en_main.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) --- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c @@ -4075,7 +4075,7 @@ void mlx5e_build_nic_params(struct mlx5_ struct mlx5e_params *params, u16 max_channels) { - u8 cq_period_mode = 0; + u8 rx_cq_period_mode; u32 link_speed = 0; u32 pci_bw = 0; @@ -4111,12 +4111,12 @@ void mlx5e_build_nic_params(struct mlx5_ params->lro_timeout = mlx5e_choose_lro_timeout(mdev, MLX5E_DEFAULT_LRO_TIMEOUT); /* CQ moderation params */ - cq_period_mode = MLX5_CAP_GEN(mdev, cq_period_start_from_cqe) ? + rx_cq_period_mode = MLX5_CAP_GEN(mdev, cq_period_start_from_cqe) ? MLX5_CQ_PERIOD_MODE_START_FROM_CQE : MLX5_CQ_PERIOD_MODE_START_FROM_EQE; params->rx_am_enabled = MLX5_CAP_GEN(mdev, cq_moderation); - mlx5e_set_rx_cq_mode_params(params, cq_period_mode); - mlx5e_set_tx_cq_mode_params(params, cq_period_mode); + mlx5e_set_rx_cq_mode_params(params, rx_cq_period_mode); + mlx5e_set_tx_cq_mode_params(params, MLX5_CQ_PERIOD_MODE_START_FROM_EQE); /* TX inline */ params->tx_max_inline = mlx5e_get_max_inline_cap(mdev); Patches currently in stable-queue which might be from talgi(a)mellanox.com are queue-4.15/net-mlx5e-set-eqe-based-as-default-tx-interrupt-moderation-mode.patch

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Linux-stable-mirror April 2018