April 2025 - Linux-stable-mirror

[PATCH AUTOSEL 6.13 01/37] drm: allow encoder mode_set even when connectors change for crtc

by Sasha Levin

From: Abhinav Kumar <quic_abhinavk(a)quicinc.com> [ Upstream commit 7e182cb4f5567f53417b762ec0d679f0b6f0039d ] In certain use-cases, a CRTC could switch between two encoders and because the mode being programmed on the CRTC remains the same during this switch, the CRTC's mode_changed remains false. In such cases, the encoder's mode_set also gets skipped. Skipping mode_set on the encoder for such cases could cause an issue because even though the same CRTC mode was being used, the … [View More]

3 weeks, 3 days

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[PATCH AUTOSEL 6.14 01/44] drm: allow encoder mode_set even when connectors change for crtc

by Sasha Levin

From: Abhinav Kumar <quic_abhinavk(a)quicinc.com> [ Upstream commit 7e182cb4f5567f53417b762ec0d679f0b6f0039d ] In certain use-cases, a CRTC could switch between two encoders and because the mode being programmed on the CRTC remains the same during this switch, the CRTC's mode_changed remains false. In such cases, the encoder's mode_set also gets skipped. Skipping mode_set on the encoder for such cases could cause an issue because even though the same CRTC mode was being used, the … [View More]

3 weeks, 3 days

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[PATCH v1 net] net: Fix null-ptr-deref by sock_lock_init_class_and_name() and rmmod.

by Kuniyuki Iwashima

When I ran the repro [0] and waited a few seconds, I observed two LOCKDEP splats: a warning immediately followed by a null-ptr-deref. [1] Reproduction Steps: 1) Mount CIFS 2) Add an iptables rule to drop incoming FIN packets for CIFS 3) Unmount CIFS 4) Unload the CIFS module 5) Remove the iptables rule At step 3), the CIFS module calls sock_release() for the underlying TCP socket, and it returns quickly. However, the socket remains in FIN_WAIT_1 because incoming FIN packets are … [View More]dropped. At this point, the module's refcnt is 0 while the socket is still alive, so the following rmmod command succeeds. # ss -tan State Recv-Q Send-Q Local Address:Port Peer Address:Port FIN-WAIT-1 0 477 10.0.2.15:51062 10.0.0.137:445 # lsmod | grep cifs cifs 1159168 0 This highlights a discrepancy between the lifetime of the CIFS module and the underlying TCP socket. Even after CIFS calls sock_release() and it returns, the TCP socket does not immediately die to close the connection gracefully. While this is generally fine, it causes an issue with LOCKDEP because CIFS assigns a different lock class to the TCP socket's sk->sk_lock using sock_lock_init_class_and_name(). Once an incoming packet is processed for the socket or a timer fires, sk->sk_lock is acquired. Then, LOCKDEP checks the lock context in check_wait_context(), where hlock_class() is called to retrieve the lock class. However, since the module has already been unloaded, hlock_class() logs a warning and returns NULL, triggering the null-ptr-deref. If LOCKDEP is enabled, we must ensure that a module calling sock_lock_init_class_and_name() (CIFS, NFS, etc) cannot be unloaded while such a socket is still alive to prevent this issue. Let's hold the module reference in sock_lock_init_class_and_name() and release it when the socket is freed in __sk_destruct(). [0]: CIFS_SERVER="10.0.0.137" CIFS_PATH="//${CIFS_SERVER}/Users/Administrator/Desktop/CIFS_TEST" DEV="enp0s3" CRED="/root/WindowsCredential.sh" MNT=$(mktemp -d /tmp/XXXXXX) mount -t cifs ${CIFS_PATH} ${MNT} -o vers=3.0,credentials=${CRED},cache=none,echo_interval=1 iptables -A INPUT -s ${CIFS_SERVER} -j DROP for i in $(seq 10); do umount ${MNT} rmmod cifs sleep 1 done rm -r ${MNT} iptables -D INPUT -s ${CIFS_SERVER} -j DROP [1]: DEBUG_LOCKS_WARN_ON(1) WARNING: CPU: 10 PID: 0 at kernel/locking/lockdep.c:234 hlock_class (kernel/locking/lockdep.c:234 kernel/locking/lockdep.c:223) Modules linked in: cifs_arc4 nls_ucs2_utils cifs_md4 [last unloaded: cifs] CPU: 10 UID: 0 PID: 0 Comm: swapper/10 Not tainted 6.14.0 #36 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014 RIP: 0010:hlock_class (kernel/locking/lockdep.c:234 kernel/locking/lockdep.c:223) ... Call Trace: <IRQ> __lock_acquire (kernel/locking/lockdep.c:4853 kernel/locking/lockdep.c:5178) lock_acquire (kernel/locking/lockdep.c:469 kernel/locking/lockdep.c:5853 kernel/locking/lockdep.c:5816) _raw_spin_lock_nested (kernel/locking/spinlock.c:379) tcp_v4_rcv (./include/linux/skbuff.h:1678 ./include/net/tcp.h:2547 net/ipv4/tcp_ipv4.c:2350) ... BUG: kernel NULL pointer dereference, address: 00000000000000c4 PF: supervisor read access in kernel mode PF: error_code(0x0000) - not-present page PGD 0 Oops: Oops: 0000 [#1] PREEMPT SMP NOPTI CPU: 10 UID: 0 PID: 0 Comm: swapper/10 Tainted: G W 6.14.0 #36 Tainted: [W]=WARN Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014 RIP: 0010:__lock_acquire (kernel/locking/lockdep.c:4852 kernel/locking/lockdep.c:5178) Code: 15 41 09 c7 41 8b 44 24 20 25 ff 1f 00 00 41 09 c7 8b 84 24 a0 00 00 00 45 89 7c 24 20 41 89 44 24 24 e8 e1 bc ff ff 4c 89 e7 <44> 0f b6 b8 c4 00 00 00 e8 d1 bc ff ff 0f b6 80 c5 00 00 00 88 44 RSP: 0018:ffa0000000468a10 EFLAGS: 00010046 RAX: 0000000000000000 RBX: ff1100010091cc38 RCX: 0000000000000027 RDX: ff1100081f09ca48 RSI: 0000000000000001 RDI: ff1100010091cc88 RBP: ff1100010091c200 R08: ff1100083fe6e228 R09: 00000000ffffbfff R10: ff1100081eca0000 R11: ff1100083fe10dc0 R12: ff1100010091cc88 R13: 0000000000000001 R14: 0000000000000000 R15: 00000000000424b1 FS: 0000000000000000(0000) GS:ff1100081f080000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000000000c4 CR3: 0000000002c4a003 CR4: 0000000000771ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe07f0 DR7: 0000000000000400 PKRU: 55555554 Call Trace: <IRQ> lock_acquire (kernel/locking/lockdep.c:469 kernel/locking/lockdep.c:5853 kernel/locking/lockdep.c:5816) _raw_spin_lock_nested (kernel/locking/spinlock.c:379) tcp_v4_rcv (./include/linux/skbuff.h:1678 ./include/net/tcp.h:2547 net/ipv4/tcp_ipv4.c:2350) ip_protocol_deliver_rcu (net/ipv4/ip_input.c:205 (discriminator 1)) ip_local_deliver_finish (./include/linux/rcupdate.h:878 net/ipv4/ip_input.c:234) ip_sublist_rcv_finish (net/ipv4/ip_input.c:576) ip_list_rcv_finish (net/ipv4/ip_input.c:628) ip_list_rcv (net/ipv4/ip_input.c:670) __netif_receive_skb_list_core (net/core/dev.c:5939 net/core/dev.c:5986) netif_receive_skb_list_internal (net/core/dev.c:6040 net/core/dev.c:6129) napi_complete_done (./include/linux/list.h:37 ./include/net/gro.h:519 ./include/net/gro.h:514 net/core/dev.c:6496) e1000_clean (drivers/net/ethernet/intel/e1000/e1000_main.c:3815) __napi_poll.constprop.0 (net/core/dev.c:7191) net_rx_action (net/core/dev.c:7262 net/core/dev.c:7382) handle_softirqs (kernel/softirq.c:561) __irq_exit_rcu (kernel/softirq.c:596 kernel/softirq.c:435 kernel/softirq.c:662) irq_exit_rcu (kernel/softirq.c:680) common_interrupt (arch/x86/kernel/irq.c:280 (discriminator 14)) </IRQ> <TASK> asm_common_interrupt (./arch/x86/include/asm/idtentry.h:693) RIP: 0010:default_idle (./arch/x86/include/asm/irqflags.h:37 ./arch/x86/include/asm/irqflags.h:92 arch/x86/kernel/process.c:744) Code: 4c 01 c7 4c 29 c2 e9 72 ff ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa eb 07 0f 00 2d c3 2b 15 00 fb f4 <fa> c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 RSP: 0018:ffa00000000ffee8 EFLAGS: 00000202 RAX: 000000000000640b RBX: ff1100010091c200 RCX: 0000000000061aa4 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff812f30c5 RBP: 000000000000000a R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000002 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 ? do_idle (kernel/sched/idle.c:186 kernel/sched/idle.c:325) default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) do_idle (kernel/sched/idle.c:186 kernel/sched/idle.c:325) cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) start_secondary (arch/x86/kernel/smpboot.c:315) common_startup_64 (arch/x86/kernel/head_64.S:421) </TASK> Modules linked in: cifs_arc4 nls_ucs2_utils cifs_md4 [last unloaded: cifs] CR2: 00000000000000c4 Fixes: ed07536ed673 ("[PATCH] lockdep: annotate nfs/nfsd in-kernel sockets") Signed-off-by: Kuniyuki Iwashima <kuniyu(a)amazon.com> Cc: stable(a)vger.kernel.org --- include/net/sock.h | 17 +++++++++++++++-- net/core/sock.c | 6 ++++++ 2 files changed, 21 insertions(+), 2 deletions(-) diff --git a/include/net/sock.h b/include/net/sock.h index 8daf1b3b12c6..5864c4c66c6d 100644 --- a/include/net/sock.h +++ b/include/net/sock.h @@ -547,6 +547,10 @@ struct sock { struct rcu_head sk_rcu; netns_tracker ns_tracker; struct xarray sk_user_frags; + +#if IS_ENABLED(CONFIG_PROVE_LOCKING) && IS_ENABLED(CONFIG_MODULES) + struct module *sk_owner; +#endif }; struct sock_bh_locked { @@ -1583,6 +1587,14 @@ static inline void sk_mem_uncharge(struct sock *sk, int size) sk_mem_reclaim(sk); } +static inline void sk_set_owner(struct sock *sk, struct module *owner) +{ +#if IS_ENABLED(CONFIG_PROVE_LOCKING) && IS_ENABLED(CONFIG_MODULES) + __module_get(owner); + sk->sk_owner = owner; +#endif +} + /* * Macro so as to not evaluate some arguments when * lockdep is not enabled. @@ -1592,13 +1604,14 @@ static inline void sk_mem_uncharge(struct sock *sk, int size) */ #define sock_lock_init_class_and_name(sk, sname, skey, name, key) \ do { \ + sk_set_owner(sk, THIS_MODULE); \ sk->sk_lock.owned = 0; \ init_waitqueue_head(&sk->sk_lock.wq); \ spin_lock_init(&(sk)->sk_lock.slock); \ debug_check_no_locks_freed((void *)&(sk)->sk_lock, \ - sizeof((sk)->sk_lock)); \ + sizeof((sk)->sk_lock)); \ lockdep_set_class_and_name(&(sk)->sk_lock.slock, \ - (skey), (sname)); \ + (skey), (sname)); \ lockdep_init_map(&(sk)->sk_lock.dep_map, (name), (key), 0); \ } while (0) diff --git a/net/core/sock.c b/net/core/sock.c index 323892066def..b54f12faad1c 100644 --- a/net/core/sock.c +++ b/net/core/sock.c @@ -2324,6 +2324,12 @@ static void __sk_destruct(struct rcu_head *head) __netns_tracker_free(net, &sk->ns_tracker, false); net_passive_dec(net); } + +#if IS_ENABLED(CONFIG_PROVE_LOCKING) && IS_ENABLED(CONFIG_MODULES) + if (sk->sk_owner) + module_put(sk->sk_owner); +#endif + sk_prot_free(sk->sk_prot_creator, sk); } -- 2.48.1 [View Less]

3 weeks, 3 days

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[PATCH AUTOSEL 5.4 01/14] page_pool: avoid infinite loop to schedule delayed worker

by Sasha Levin

From: Jason Xing <kerneljasonxing(a)gmail.com> [ Upstream commit 43130d02baa137033c25297aaae95fd0edc41654 ] We noticed the kworker in page_pool_release_retry() was waken up repeatedly and infinitely in production because of the buggy driver causing the inflight less than 0 and warning us in page_pool_inflight()[1]. Since the inflight value goes negative, it means we should not expect the whole page_pool to get back to work normally. This patch mitigates the adverse effect by not … [View More]

3 weeks, 3 days

1
13
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[PATCH AUTOSEL 5.15 01/16] page_pool: avoid infinite loop to schedule delayed worker

by Sasha Levin

From: Jason Xing <kerneljasonxing(a)gmail.com> [ Upstream commit 43130d02baa137033c25297aaae95fd0edc41654 ] We noticed the kworker in page_pool_release_retry() was waken up repeatedly and infinitely in production because of the buggy driver causing the inflight less than 0 and warning us in page_pool_inflight()[1]. Since the inflight value goes negative, it means we should not expect the whole page_pool to get back to work normally. This patch mitigates the adverse effect by not … [View More]

3 weeks, 3 days

1
15
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[PATCH AUTOSEL 6.1 01/18] f2fs: don't retry IO for corrupted data scenario

by Sasha Levin

From: Chao Yu <chao(a)kernel.org> [ Upstream commit 1534747d3170646ddeb9ea5f7caaac90359707cf ] F2FS-fs (dm-105): inconsistent node block, nid:430, node_footer[nid:2198964142,ino:598252782,ofs:118300154,cpver:5409237455940746069,blkaddr:2125070942] F2FS-fs (dm-105): inconsistent node block, nid:430, node_footer[nid:2198964142,ino:598252782,ofs:118300154,cpver:5409237455940746069,blkaddr:2125070942] F2FS-fs (dm-105): inconsistent node block, nid:430, node_footer[nid:2198964142,ino:… [View More]

3 weeks, 3 days

1
17
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[PATCH AUTOSEL 6.12 01/47] wifi: ath11k: Fix DMA buffer allocation to resolve SWIOTLB issues

by Sasha Levin

From: P Praneesh <quic_ppranees(a)quicinc.com> [ Upstream commit 1bcd20981834928ccc5d981aacb806bb523d8b29 ] Currently, the driver allocates cacheable DMA buffers for rings like HAL_REO_DST and HAL_WBM2SW_RELEASE. The buffers for HAL_WBM2SW_RELEASE are large (1024 KiB), exceeding the SWIOTLB slot size of 256 KiB. This leads to "swiotlb buffer is full" error messages on systems without an IOMMU that use SWIOTLB, causing driver initialization failures. The driver calls dma_map_single() … [View More]with these large buffers obtained from kzalloc(), resulting in ring initialization errors on systems without an IOMMU that use SWIOTLB. To address these issues, replace the flawed buffer allocation mechanism with the appropriate DMA API. Specifically, use dma_alloc_noncoherent() for cacheable DMA buffers, ensuring proper freeing of buffers with dma_free_noncoherent(). Error log: [ 10.194343] ath11k_pci 0000:04:00.0: swiotlb buffer is full (sz:1048583 bytes), total 32768 (slots), used 2529 (slots) [ 10.194406] ath11k_pci 0000:04:00.0: failed to set up tcl_comp ring (0) :-12 [ 10.194781] ath11k_pci 0000:04:00.0: failed to init DP: -12 Tested-on: QCN9074 hw1.0 PCI WLAN.HK.2.7.0.1-01744-QCAHKSWPL_SILICONZ-1 Tested-on: WCN6855 hw2.0 PCI WLAN.HSP.1.1-03125-QCAHSPSWPL_V1_V2_SILICONZ_LITE-3 Reported-by: Tim Harvey <tharvey(a)gateworks.com> Closes: https://lore.kernel.org/all/20241210041133.GA17116@lst.de/ Signed-off-by: P Praneesh <quic_ppranees(a)quicinc.com> Tested-by: Tim Harvey <tharvey(a)gateworks.com> Link: https://patch.msgid.link/20250119164219.647059-2-quic_ppranees@quicinc.com Signed-off-by: Jeff Johnson <jeff.johnson(a)oss.qualcomm.com> Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- drivers/net/wireless/ath/ath11k/dp.c | 35 +++++++++------------------- 1 file changed, 11 insertions(+), 24 deletions(-) diff --git a/drivers/net/wireless/ath/ath11k/dp.c b/drivers/net/wireless/ath/ath11k/dp.c index fbf666d0ecf1d..f124b7329e1ac 100644 --- a/drivers/net/wireless/ath/ath11k/dp.c +++ b/drivers/net/wireless/ath/ath11k/dp.c @@ -1,7 +1,7 @@ // SPDX-License-Identifier: BSD-3-Clause-Clear /* * Copyright (c) 2018-2019 The Linux Foundation. All rights reserved. - * Copyright (c) 2021-2024 Qualcomm Innovation Center, Inc. All rights reserved. + * Copyright (c) 2021-2025 Qualcomm Innovation Center, Inc. All rights reserved. */ #include <crypto/hash.h> @@ -104,14 +104,12 @@ void ath11k_dp_srng_cleanup(struct ath11k_base *ab, struct dp_srng *ring) if (!ring->vaddr_unaligned) return; - if (ring->cached) { - dma_unmap_single(ab->dev, ring->paddr_unaligned, ring->size, - DMA_FROM_DEVICE); - kfree(ring->vaddr_unaligned); - } else { + if (ring->cached) + dma_free_noncoherent(ab->dev, ring->size, ring->vaddr_unaligned, + ring->paddr_unaligned, DMA_FROM_DEVICE); + else dma_free_coherent(ab->dev, ring->size, ring->vaddr_unaligned, ring->paddr_unaligned); - } ring->vaddr_unaligned = NULL; } @@ -249,25 +247,14 @@ int ath11k_dp_srng_setup(struct ath11k_base *ab, struct dp_srng *ring, default: cached = false; } - - if (cached) { - ring->vaddr_unaligned = kzalloc(ring->size, GFP_KERNEL); - if (!ring->vaddr_unaligned) - return -ENOMEM; - - ring->paddr_unaligned = dma_map_single(ab->dev, - ring->vaddr_unaligned, - ring->size, - DMA_FROM_DEVICE); - if (dma_mapping_error(ab->dev, ring->paddr_unaligned)) { - kfree(ring->vaddr_unaligned); - ring->vaddr_unaligned = NULL; - return -ENOMEM; - } - } } - if (!cached) + if (cached) + ring->vaddr_unaligned = dma_alloc_noncoherent(ab->dev, ring->size, + &ring->paddr_unaligned, + DMA_FROM_DEVICE, + GFP_KERNEL); + else ring->vaddr_unaligned = dma_alloc_coherent(ab->dev, ring->size, &ring->paddr_unaligned, GFP_KERNEL); -- 2.39.5 [View Less]

3 weeks, 3 days

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[PATCH AUTOSEL 6.13 01/49] wifi: ath11k: Fix DMA buffer allocation to resolve SWIOTLB issues

by Sasha Levin

From: P Praneesh <quic_ppranees(a)quicinc.com> [ Upstream commit 1bcd20981834928ccc5d981aacb806bb523d8b29 ] Currently, the driver allocates cacheable DMA buffers for rings like HAL_REO_DST and HAL_WBM2SW_RELEASE. The buffers for HAL_WBM2SW_RELEASE are large (1024 KiB), exceeding the SWIOTLB slot size of 256 KiB. This leads to "swiotlb buffer is full" error messages on systems without an IOMMU that use SWIOTLB, causing driver initialization failures. The driver calls dma_map_single() … [View More]with these large buffers obtained from kzalloc(), resulting in ring initialization errors on systems without an IOMMU that use SWIOTLB. To address these issues, replace the flawed buffer allocation mechanism with the appropriate DMA API. Specifically, use dma_alloc_noncoherent() for cacheable DMA buffers, ensuring proper freeing of buffers with dma_free_noncoherent(). Error log: [ 10.194343] ath11k_pci 0000:04:00.0: swiotlb buffer is full (sz:1048583 bytes), total 32768 (slots), used 2529 (slots) [ 10.194406] ath11k_pci 0000:04:00.0: failed to set up tcl_comp ring (0) :-12 [ 10.194781] ath11k_pci 0000:04:00.0: failed to init DP: -12 Tested-on: QCN9074 hw1.0 PCI WLAN.HK.2.7.0.1-01744-QCAHKSWPL_SILICONZ-1 Tested-on: WCN6855 hw2.0 PCI WLAN.HSP.1.1-03125-QCAHSPSWPL_V1_V2_SILICONZ_LITE-3 Reported-by: Tim Harvey <tharvey(a)gateworks.com> Closes: https://lore.kernel.org/all/20241210041133.GA17116@lst.de/ Signed-off-by: P Praneesh <quic_ppranees(a)quicinc.com> Tested-by: Tim Harvey <tharvey(a)gateworks.com> Link: https://patch.msgid.link/20250119164219.647059-2-quic_ppranees@quicinc.com Signed-off-by: Jeff Johnson <jeff.johnson(a)oss.qualcomm.com> Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- drivers/net/wireless/ath/ath11k/dp.c | 35 +++++++++------------------- 1 file changed, 11 insertions(+), 24 deletions(-) diff --git a/drivers/net/wireless/ath/ath11k/dp.c b/drivers/net/wireless/ath/ath11k/dp.c index fbf666d0ecf1d..f124b7329e1ac 100644 --- a/drivers/net/wireless/ath/ath11k/dp.c +++ b/drivers/net/wireless/ath/ath11k/dp.c @@ -1,7 +1,7 @@ // SPDX-License-Identifier: BSD-3-Clause-Clear /* * Copyright (c) 2018-2019 The Linux Foundation. All rights reserved. - * Copyright (c) 2021-2024 Qualcomm Innovation Center, Inc. All rights reserved. + * Copyright (c) 2021-2025 Qualcomm Innovation Center, Inc. All rights reserved. */ #include <crypto/hash.h> @@ -104,14 +104,12 @@ void ath11k_dp_srng_cleanup(struct ath11k_base *ab, struct dp_srng *ring) if (!ring->vaddr_unaligned) return; - if (ring->cached) { - dma_unmap_single(ab->dev, ring->paddr_unaligned, ring->size, - DMA_FROM_DEVICE); - kfree(ring->vaddr_unaligned); - } else { + if (ring->cached) + dma_free_noncoherent(ab->dev, ring->size, ring->vaddr_unaligned, + ring->paddr_unaligned, DMA_FROM_DEVICE); + else dma_free_coherent(ab->dev, ring->size, ring->vaddr_unaligned, ring->paddr_unaligned); - } ring->vaddr_unaligned = NULL; } @@ -249,25 +247,14 @@ int ath11k_dp_srng_setup(struct ath11k_base *ab, struct dp_srng *ring, default: cached = false; } - - if (cached) { - ring->vaddr_unaligned = kzalloc(ring->size, GFP_KERNEL); - if (!ring->vaddr_unaligned) - return -ENOMEM; - - ring->paddr_unaligned = dma_map_single(ab->dev, - ring->vaddr_unaligned, - ring->size, - DMA_FROM_DEVICE); - if (dma_mapping_error(ab->dev, ring->paddr_unaligned)) { - kfree(ring->vaddr_unaligned); - ring->vaddr_unaligned = NULL; - return -ENOMEM; - } - } } - if (!cached) + if (cached) + ring->vaddr_unaligned = dma_alloc_noncoherent(ab->dev, ring->size, + &ring->paddr_unaligned, + DMA_FROM_DEVICE, + GFP_KERNEL); + else ring->vaddr_unaligned = dma_alloc_coherent(ab->dev, ring->size, &ring->paddr_unaligned, GFP_KERNEL); -- 2.39.5 [View Less]

3 weeks, 3 days

1
48
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[PATCH] USB: storage: quirk for ADATA Portable HDD CH94

by Oliver Neukum

Version 1.60 specifically needs this quirk. Version 2.00 is known good. Cc: stable(a)vger.kernel.org Signed-off-by: Oliver Neukum <oneukum(a)suse.com> --- drivers/usb/storage/unusual_uas.h | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/usb/storage/unusual_uas.h b/drivers/usb/storage/unusual_uas.h index 1f8c9b16a0fb..d460d71b4257 100644 --- a/drivers/usb/storage/unusual_uas.h +++ b/drivers/usb/storage/unusual_uas.h @@ -83,6 +83,13 @@ UNUSUAL_DEV(0x0bc2, 0x331a, 0x0000,… [View More]

3 weeks, 3 days

1
0
0 0

[PATCH v3 0/2] Add wcslen()

by Nathan Chancellor

Hi all, A recent LLVM change [1] introduces a call to wcslen() in fs/smb/client/smb2pdu.c through UniStrcat() via alloc_path_with_tree_prefix(). Similar to the bcmp() and stpcpy() additions that happened in 5f074f3e192f and 1e1b6d63d634, add wcslen() to fix the linkage failure. [1]: https://github.com/llvm/llvm-project/commit/9694844d7e36fd5e01011ab56b64f27… --- Changes in v3: - During comment shuffle in patch 1, move to standard multi-line comment kernel style (Andy). Carry forward Andy's … [View More]

3 weeks, 3 days

2
3
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Linux-stable-mirror April 2025