linux-kernel - Re: [f2fs-dev] [PATCH] f2fs: fix kernel crash due to null io->bio

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Message-Id: <167579641779.24576.11865638891088345725.git-patchwork-notify@kernel.org>
Date:   Tue, 07 Feb 2023 19:00:17 +0000
From:   patchwork-bot+f2fs@...nel.org
To:     Jaegeuk Kim <jaegeuk@...nel.org>
Cc:     linux-kernel@...r.kernel.org,
        linux-f2fs-devel@...ts.sourceforge.net, stable@...r.kernel.org
Subject: Re: [f2fs-dev] [PATCH] f2fs: fix kernel crash due to null io->bio

Hello:

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

On Sun,  5 Feb 2023 19:43:44 -0800 you wrote:
> We should return when io->bio is null before doing anything. Otherwise, panic.
> 
> BUG: kernel NULL pointer dereference, address: 0000000000000010
> RIP: 0010:__submit_merged_write_cond+0x164/0x240 [f2fs]
> Call Trace:
>  <TASK>
>  f2fs_submit_merged_write+0x1d/0x30 [f2fs]
>  commit_checkpoint+0x110/0x1e0 [f2fs]
>  f2fs_write_checkpoint+0x9f7/0xf00 [f2fs]
>  ? __pfx_issue_checkpoint_thread+0x10/0x10 [f2fs]
>  __checkpoint_and_complete_reqs+0x84/0x190 [f2fs]
>  ? preempt_count_add+0x82/0xc0
>  ? __pfx_issue_checkpoint_thread+0x10/0x10 [f2fs]
>  issue_checkpoint_thread+0x4c/0xf0 [f2fs]
>  ? __pfx_autoremove_wake_function+0x10/0x10
>  kthread+0xff/0x130
>  ? __pfx_kthread+0x10/0x10
>  ret_from_fork+0x2c/0x50
>  </TASK>
> 
> [...]

Here is the summary with links:
  - [f2fs-dev] f2fs: fix kernel crash due to null io->bio
    https://git.kernel.org/jaegeuk/f2fs/c/267c159f9c7b

You are awesome, thank you!
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