From: syzbot <syzbot+43f787e4cfb1ef7b84a8@syzkaller.appspotmail.com>
To: axboe@kernel.dk, efremov@linux.com, linux-block@vger.kernel.org,
linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com
Subject: [syzbot] WARNING in floppy_check_events
Date: Fri, 18 Mar 2022 17:06:17 -0700 [thread overview]
Message-ID: <00000000000048a02c05da870806@google.com> (raw)
Hello,
syzbot found the following issue on:
HEAD commit: 09688c0166e7 Linux 5.17-rc8
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=13d09be9700000
kernel config: https://syzkaller.appspot.com/x/.config?x=d35f9bc6884af6c9
dashboard link: https://syzkaller.appspot.com/bug?extid=43f787e4cfb1ef7b84a8
compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
userspace arch: i386
Unfortunately, I don't have any reproducer for this issue yet.
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+43f787e4cfb1ef7b84a8@syzkaller.appspotmail.com
------------[ cut here ]------------
WARNING: CPU: 3 PID: 12378 at drivers/block/floppy.c:1000 schedule_bh drivers/block/floppy.c:1000 [inline]
WARNING: CPU: 3 PID: 12378 at drivers/block/floppy.c:1000 process_fd_request drivers/block/floppy.c:2851 [inline]
WARNING: CPU: 3 PID: 12378 at drivers/block/floppy.c:1000 floppy_check_events+0x44a/0x560 drivers/block/floppy.c:4082
Modules linked in:
CPU: 3 PID: 12378 Comm: kworker/3:181 Not tainted 5.17.0-rc8-syzkaller #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014
Workqueue: events_freezable_power_ disk_events_workfn
RIP: 0010:schedule_bh drivers/block/floppy.c:1000 [inline]
RIP: 0010:process_fd_request drivers/block/floppy.c:2851 [inline]
RIP: 0010:floppy_check_events+0x44a/0x560 drivers/block/floppy.c:4082
Code: 05 17 81 02 0c 60 9b 7c 84 e8 62 f0 cf fc e9 ba fd ff ff 45 31 e4 e9 6e fc ff ff e8 20 70 43 fd e9 5b fd ff ff e8 86 f6 fb fc <0f> 0b eb b8 48 89 de 48 c7 c7 20 9f 6a 8c e8 33 e3 84 ff e9 e4 fb
RSP: 0018:ffffc90028107cb0 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000
RDX: ffff88805cdd8000 RSI: ffffffff847cc9aa RDI: 0000000000000003
RBP: ffffffff907f72f0 R08: 0000000000000000 R09: ffffffff8c6b07a7
R10: ffffffff847cc961 R11: 0000000000000000 R12: 0000000000000001
R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001
FS: 0000000000000000(0000) GS:ffff88802cd00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000f58f6db0 CR3: 0000000073008000 CR4: 0000000000150ee0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
disk_check_events+0xc2/0x420 block/disk-events.c:193
process_one_work+0x9ac/0x1650 kernel/workqueue.c:2307
worker_thread+0x657/0x1110 kernel/workqueue.c:2454
kthread+0x2e9/0x3a0 kernel/kthread.c:377
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
</TASK>
---
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:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
reply other threads:[~2022-03-19 0:06 UTC|newest]
Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=00000000000048a02c05da870806@google.com \
--to=syzbot+43f787e4cfb1ef7b84a8@syzkaller.appspotmail.com \
--cc=axboe@kernel.dk \
--cc=efremov@linux.com \
--cc=linux-block@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=syzkaller-bugs@googlegroups.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).