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anolis-cloud-kernel/drivers/dma-buf
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Tetsuo Handa ab33db7390 dma-buf/sw-sync: don't enable IRQ from sync_print_obj() 
ANBZ: #12838

commit b794918961 upstream.

Since commit a6aa8fca4d ("dma-buf/sw-sync: Reduce irqsave/irqrestore from
known context") by error replaced spin_unlock_irqrestore() with
spin_unlock_irq() for both sync_debugfs_show() and sync_print_obj() despite
sync_print_obj() is called from sync_debugfs_show(), lockdep complains
inconsistent lock state warning.

Use plain spin_{lock,unlock}() for sync_print_obj(), for
sync_debugfs_show() is already using spin_{lock,unlock}_irq().

Reported-by: syzbot <syzbot+a225ee3df7e7f9372dbe@syzkaller.appspotmail.com>
Closes: https://syzkaller.appspot.com/bug?extid=a225ee3df7e7f9372dbe
Fixes: a6aa8fca4d ("dma-buf/sw-sync: Reduce irqsave/irqrestore from known context")
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Reviewed-by: Christian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/c2e46020-aaa6-4e06-bf73-f05823f913f0@I-love.SAKURA.ne.jp
Signed-off-by: Christian König <christian.koenig@amd.com>

Fixes: CVE-2024-38780
Signed-off-by: Xiao Long <xiaolong@openanolis.org>
Signed-off-by: 362994 <362994>
Reviewed-by: Guixin Liu <kanie@linux.alibaba.com>
Link: https://gitee.com/anolis/cloud-kernel/pulls/4310
 		2025-03-31 02:36:35 +00:00
..
heaps dma-mapping updates for 5.10 2020-10-15 14:43:29 -07:00
Kconfig dma-buf: DMABUF_MOVE_NOTIFY should depend on DMA_SHARED_BUFFER 2021-09-26 14:08:59 +02:00
Makefile dma-buf: Exercise dma-fence-chain under selftests 2020-04-09 19:58:55 +01:00
dma-buf.c dma-buf: WARN on dmabuf release with pending attachments 2021-11-18 14:03:52 +01:00
dma-fence-array.c dma_fence_array: Fix PENDING_ERROR leak in dma_fence_array_signaled() 2022-01-27 10:53:43 +01:00
dma-fence-chain.c dma-buf: fence-chain: Document missing dma_fence_chain_init() parameter in kerneldoc 2020-09-03 17:47:02 +05:30
dma-fence.c dma-buf: fix kernel-doc warning in dma-fence.c 2020-09-02 14:39:15 +02:00
dma-heap.c dma-buf: heaps: Fix potential spectre v1 gadget 2022-02-08 18:30:36 +01:00
dma-resv.c dma-buf/dma-resv: Respect num_fences when initializing the shared fence list. 2020-12-30 11:54:26 +01:00
selftest.c
…
selftest.h
…
selftests.h Merge drm/drm-next into drm-intel-next-queued 2020-06-25 18:05:03 +03:00
seqno-fence.c
…
st-dma-fence-chain.c dma-buf: fix dma-fence-chain out of order test 2020-07-02 15:21:40 +02:00
st-dma-fence.c
…
sw_sync.c dma-buf/sw_sync: Avoid recursive lock during fence signal 2024-08-09 06:40:17 +00:00
sync_debug.c dma-buf/sw-sync: don't enable IRQ from sync_print_obj() 2025-03-31 02:36:35 +00:00
sync_debug.h
…
sync_file.c dma-buf/sync_file: Don't leak fences on merge failure 2021-07-25 14:36:20 +02:00
sync_trace.h
…
udmabuf.c udmabuf: add back sanity check 2022-06-29 08:59:48 +02:00