Re: [syzbot] WARNING in __brelse

From: Al Viro
Date: Sat Oct 01 2022 - 18:50:57 EST


On Wed, Sep 28, 2022 at 01:43:39PM -0700, syzbot wrote:
> Hello,
>
> syzbot found the following issue on:
>
> HEAD commit: 46452d3786a8 Merge tag 'sound-6.0-rc8' of git://git.kernel..
> git tree: upstream
> console+strace: https://syzkaller.appspot.com/x/log.txt?x=154595ef080000
> kernel config: https://syzkaller.appspot.com/x/.config?x=755695d26ad09807
> dashboard link: https://syzkaller.appspot.com/bug?extid=7902cd7684bc35306224
> 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=127543c4880000

For crying out loud... Seeing that it has

syz_mount_image$udf(

in it and seeing that MAINTAINERS has

UDF FILESYSTEM
M: Jan Kara <jack@xxxxxxxx>
S: Maintained
F: Documentation/filesystems/udf.rst
F: fs/udf/

which word is missing in Subject and which mail is missing in Cc?

"[syzbot] WARNING in __brelse" says nothing beyond "it's probably about
something that does buffer_head IO". Recepients of that mail have no way
to find which fs is involved without wget of your reproducer and looking
into it (well, that or start a browser, cut'n'paste the URL there, etc.).
You, OTOH, have that information from the very beginning...