Re: [f2fs-dev] [PATCH v2] f2fs: fix to avoid accessing uninitialized curseg

[patchwork-bot+f2fs]

Hello:

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

On Mon, 24 Feb 2025 18:29:23 +0800 you wrote:
> syzbot reports a f2fs bug as below:
> 
> F2FS-fs (loop3): Stopped filesystem due to reason: 7
> kworker/u8:7: attempt to access beyond end of device
> BUG: unable to handle page fault for address: ffffed1604ea3dfa
> RIP: 0010:get_ckpt_valid_blocks fs/f2fs/segment.h:361 [inline]
> RIP: 0010:has_curseg_enough_space fs/f2fs/segment.h:570 [inline]
> RIP: 0010:__get_secs_required fs/f2fs/segment.h:620 [inline]
> RIP: 0010:has_not_enough_free_secs fs/f2fs/segment.h:633 [inline]
> RIP: 0010:has_enough_free_secs+0x575/0x1660 fs/f2fs/segment.h:649
>  <TASK>
>  f2fs_is_checkpoint_ready fs/f2fs/segment.h:671 [inline]
>  f2fs_write_inode+0x425/0x540 fs/f2fs/inode.c:791
>  write_inode fs/fs-writeback.c:1525 [inline]
>  __writeback_single_inode+0x708/0x10d0 fs/fs-writeback.c:1745
>  writeback_sb_inodes+0x820/0x1360 fs/fs-writeback.c:1976
>  wb_writeback+0x413/0xb80 fs/fs-writeback.c:2156
>  wb_do_writeback fs/fs-writeback.c:2303 [inline]
>  wb_workfn+0x410/0x1080 fs/fs-writeback.c:2343
>  process_one_work kernel/workqueue.c:3236 [inline]
>  process_scheduled_works+0xa66/0x1840 kernel/workqueue.c:3317
>  worker_thread+0x870/0xd30 kernel/workqueue.c:3398
>  kthread+0x7a9/0x920 kernel/kthread.c:464
>  ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148
>  ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
> 
> [...]

Here is the summary with links:
  - [f2fs-dev,v2] f2fs: fix to avoid accessing uninitialized curseg
    https://git.kernel.org/jaegeuk/f2fs/c/986c50f6bca1

You are awesome, thank you!
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