Re: [syzbot] [block?] possible deadlock in elv_iosched_store

[syzbot <syzbot+4c7e0f9b94ad65811efb@syzkaller.appspotmail.com>]

> On Fri, Mar 28, 2025 at 07:37:25AM -0700, syzbot wrote:
>> Hello,
>> 
>> syzbot found the following issue on:
>> 
>> HEAD commit:    1a9239bb4253 Merge tag 'net-next-6.15' of git://git.kernel..
>> git tree:       upstream
>> console output: https://syzkaller.appspot.com/x/log.txt?x=1384b43f980000
>> kernel config:  https://syzkaller.appspot.com/x/.config?x=c7163a109ac459a8
>> dashboard link: https://syzkaller.appspot.com/bug?extid=4c7e0f9b94ad65811efb
>> compiler:       gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
>> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=178cfa4c580000
>> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=11a8ca4c580000
>> 
>> Downloadable assets:
>> disk image: https://storage.googleapis.com/syzbot-assets/fc7dc9f0d9a7/disk-1a9239bb.raw.xz
>> vmlinux: https://storage.googleapis.com/syzbot-assets/f555a3ae03d3/vmlinux-1a9239bb.xz
>> kernel image: https://storage.googleapis.com/syzbot-assets/55f6ea74eaf2/bzImage-1a9239bb.xz
>> 
>> IMPORTANT: if you fix the issue, please add the following tag to the commit:
>> Reported-by: syzbot+4c7e0f9b94ad65811efb@syzkaller.appspotmail.com
>> 
>
> ...
>
>> 
>> ---
>> This report is generated by a bot. It may contain errors.
>> See https://goo.gl/tpsmEJ for more information about syzbot.
>> syzbot engineers can be reached at syzkaller@googlegroups.com.
>> 
>> syzbot will keep track of this issue. See:
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>> 
>> If the report is already addressed, let syzbot know by replying with:
>> #syz fix: exact-commit-title
>> 
>> If you want syzbot to run the reproducer, reply with:
>> #syz test: git://repo/address.git branch-or-commit-hash
>> If you attach or paste a git patch, syzbot will apply it before testing.
>> 
>> If you want to overwrite report's subsystems, reply with:
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>> (See the list of subsystem names on the web dashboard)
>> 
>> If the report is a duplicate of another one, reply with:
>> #syz dup: exact-subject-of-another-report
>
> #syz dup: [syzbot] [block?] possible deadlock in elv_iosched_store

Can't dup bug to itself.

>
> -- 
> Ming
>