Re: [f2fs-dev] [PATCH v2] f2fs: fix to avoid use-after-free in f2fs_stop_gc_thread()

[patchwork-bot+f2fs@kernel.org]

Hello:

This patch was applied to jaegeuk/f2fs.git (dev)
by Jaegeuk Kim <jaegeuk@kernel.org>:

On Tue, 30 Jul 2024 09:08:55 +0800 you wrote:
> syzbot reports a f2fs bug as below:
> 
>  __dump_stack lib/dump_stack.c:88 [inline]
>  dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114
>  print_report+0xe8/0x550 mm/kasan/report.c:491
>  kasan_report+0x143/0x180 mm/kasan/report.c:601
>  kasan_check_range+0x282/0x290 mm/kasan/generic.c:189
>  instrument_atomic_read_write include/linux/instrumented.h:96 [inline]
>  atomic_fetch_add_relaxed include/linux/atomic/atomic-instrumented.h:252 [inline]
>  __refcount_add include/linux/refcount.h:184 [inline]
>  __refcount_inc include/linux/refcount.h:241 [inline]
>  refcount_inc include/linux/refcount.h:258 [inline]
>  get_task_struct include/linux/sched/task.h:118 [inline]
>  kthread_stop+0xca/0x630 kernel/kthread.c:704
>  f2fs_stop_gc_thread+0x65/0xb0 fs/f2fs/gc.c:210
>  f2fs_do_shutdown+0x192/0x540 fs/f2fs/file.c:2283
>  f2fs_ioc_shutdown fs/f2fs/file.c:2325 [inline]
>  __f2fs_ioctl+0x443a/0xbe60 fs/f2fs/file.c:4325
>  vfs_ioctl fs/ioctl.c:51 [inline]
>  __do_sys_ioctl fs/ioctl.c:907 [inline]
>  __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:893
>  do_syscall_x64 arch/x86/entry/common.c:52 [inline]
>  do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
>  entry_SYSCALL_64_after_hwframe+0x77/0x7f
> 
> [...]

Here is the summary with links:
  - [f2fs-dev,v2] f2fs: fix to avoid use-after-free in f2fs_stop_gc_thread()
    https://git.kernel.org/jaegeuk/f2fs/c/c7f114d864ac

You are awesome, thank you!
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