linux-kernel - Re: [f2fs-dev] [PATCH] f2fs: fix to use f2fs_is_valid_blkaddr_raw() in do_write

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Message-Id: 
 <175208461925.806926.9116732012355450749.git-patchwork-notify@kernel.org>
Date: Wed, 09 Jul 2025 18:10:19 +0000
From: patchwork-bot+f2fs@...nel.org
To: Chao Yu <chao@...nel.org>
Cc: jaegeuk@...nel.org, syzbot+9201a61c060513d4be38@...kaller.appspotmail.com,
 linux-kernel@...r.kernel.org, linux-f2fs-devel@...ts.sourceforge.net
Subject: Re: [f2fs-dev] [PATCH] f2fs: fix to use f2fs_is_valid_blkaddr_raw()
 in
 do_write_page()

Hello:

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

On Tue,  1 Jul 2025 17:26:10 +0800 you wrote:
> As syzbot reported as below:
> 
> F2FS-fs (loop9): inject invalid blkaddr in f2fs_is_valid_blkaddr of do_write_page+0x277/0xb10 fs/f2fs/segment.c:3956
> ------------[ cut here ]------------
> kernel BUG at fs/f2fs/segment.c:3957!
> Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
> CPU: 0 UID: 0 PID: 10538 Comm: syz-executor Not tainted 6.16.0-rc3-next-20250627-syzkaller #0 PREEMPT(full)
> Call Trace:
>  <TASK>
>  f2fs_outplace_write_data+0x11a/0x220 fs/f2fs/segment.c:4017
>  f2fs_do_write_data_page+0x12ea/0x1a40 fs/f2fs/data.c:2752
>  f2fs_write_single_data_page+0xa68/0x1680 fs/f2fs/data.c:2851
>  f2fs_write_cache_pages fs/f2fs/data.c:3133 [inline]
>  __f2fs_write_data_pages fs/f2fs/data.c:3282 [inline]
>  f2fs_write_data_pages+0x195b/0x3000 fs/f2fs/data.c:3309
>  do_writepages+0x32b/0x550 mm/page-writeback.c:2636
>  filemap_fdatawrite_wbc mm/filemap.c:386 [inline]
>  __filemap_fdatawrite_range mm/filemap.c:419 [inline]
>  __filemap_fdatawrite mm/filemap.c:425 [inline]
>  filemap_fdatawrite+0x199/0x240 mm/filemap.c:430
>  f2fs_sync_dirty_inodes+0x31f/0x830 fs/f2fs/checkpoint.c:1108
>  block_operations fs/f2fs/checkpoint.c:1247 [inline]
>  f2fs_write_checkpoint+0x95a/0x1df0 fs/f2fs/checkpoint.c:1638
>  kill_f2fs_super+0x2c3/0x6c0 fs/f2fs/super.c:5081
>  deactivate_locked_super+0xb9/0x130 fs/super.c:474
>  cleanup_mnt+0x425/0x4c0 fs/namespace.c:1417
>  task_work_run+0x1d4/0x260 kernel/task_work.c:227
>  resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
>  exit_to_user_mode_loop+0xec/0x110 kernel/entry/common.c:114
>  exit_to_user_mode_prepare include/linux/entry-common.h:330 [inline]
>  syscall_exit_to_user_mode_work include/linux/entry-common.h:414 [inline]
>  syscall_exit_to_user_mode include/linux/entry-common.h:449 [inline]
>  do_syscall_64+0x2bd/0x3b0 arch/x86/entry/syscall_64.c:100
>  entry_SYSCALL_64_after_hwframe+0x77/0x7f
> 
> [...]

Here is the summary with links:
  - [f2fs-dev] f2fs: fix to use f2fs_is_valid_blkaddr_raw() in do_write_page()
    https://git.kernel.org/jaegeuk/f2fs/c/8f4688591d96

You are awesome, thank you!
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