2022-04-16 01:50:20

by Jens Axboe

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Subject: Re: [syzbot] kernel BUG in commit_creds

On 4/14/22 7:30 PM, syzbot wrote:
> Hello,
>
> syzbot found the following issue on:
>
> HEAD commit: 40354149f4d7 Add linux-next specific files for 20220414
> git tree: linux-next
> console output: https://syzkaller.appspot.com/x/log.txt?x=1778a95cf00000
> kernel config: https://syzkaller.appspot.com/x/.config?x=a44d62051576f6f5
> dashboard link: https://syzkaller.appspot.com/bug?extid=60c52ca98513a8760a91
> compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
> syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1102d2e0f00000
> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15e22af4f00000
>
> The issue was bisected to:
>
> commit 6bf9c47a398911e0ab920e362115153596c80432
> Author: Jens Axboe <[email protected]>
> Date: Tue Mar 29 16:10:08 2022 +0000
>
> io_uring: defer file assignment

#syz test: git://git.kernel.dk/linux-block io_uring-5.18

--
Jens Axboe


2022-04-16 02:40:11

by syzbot

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Subject: Re: [syzbot] kernel BUG in commit_creds

Hello,

syzbot has tested the proposed patch and the reproducer did not trigger any issue:

Reported-and-tested-by: [email protected]

Tested on:

commit: 70152140 io_uring: abort file assignment prior to assi..
git tree: git://git.kernel.dk/linux-block io_uring-5.18
kernel config: https://syzkaller.appspot.com/x/.config?x=eb177500e563582f
dashboard link: https://syzkaller.appspot.com/bug?extid=60c52ca98513a8760a91
compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2

Note: no patches were applied.
Note: testing is done by a robot and is best-effort only.