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* WARNING in mark_buffer_dirty (3)
@ 2021-02-14 16:48 syzbot
  0 siblings, 0 replies; only message in thread
From: syzbot @ 2021-02-14 16:48 UTC (permalink / raw)
  To: linux-fsdevel, linux-kernel, syzkaller-bugs, viro

Hello,

syzbot found the following issue on:

HEAD commit:    e0756cfc Merge tag 'trace-v5.11-rc7' of git://git.kernel.o..
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=14d0f814d00000
kernel config:  https://syzkaller.appspot.com/x/.config?x=a53fd47f16f22f8c
dashboard link: https://syzkaller.appspot.com/bug?extid=7d5c3e0439dc861b68fc

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+7d5c3e0439dc861b68fc@syzkaller.appspotmail.com

------------[ cut here ]------------
WARNING: CPU: 3 PID: 5031 at fs/buffer.c:1113 mark_buffer_dirty+0x488/0x5d0 fs/buffer.c:1113
Modules linked in:
CPU: 3 PID: 5031 Comm: jbd2/sda1-8 Not tainted 5.11.0-rc7-syzkaller #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014
RIP: 0010:mark_buffer_dirty+0x488/0x5d0 fs/buffer.c:1113
Code: c1 ea 03 80 3c 02 00 0f 85 52 01 00 00 48 8b 3b be 04 00 00 00 e8 b8 ac fc ff 5b 5d 41 5c 41 5d e9 2d 9d a2 ff e8 28 9d a2 ff <0f> 0b e9 bf fb ff ff e8 1c 9d a2 ff 0f 0b e9 e3 fb ff ff e8 10 9d
RSP: 0018:ffffc9000df3fa20 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff888017d0b698 RCX: 0000000000000000
RDX: ffff888014b420c0 RSI: ffffffff81d039a8 RDI: 0000000000000003
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff81d03565 R11: 0000000000000000 R12: ffff888017d0b698
R13: ffff88801ad9e980 R14: ffff888022e8ea50 R15: ffff888022e8ea50
FS:  0000000000000000(0000) GS:ffff88802cd00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000557ba7d6b967 CR3: 000000000ba8e000 CR4: 0000000000150ee0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __jbd2_journal_temp_unlink_buffer+0x3ba/0x500 fs/jbd2/transaction.c:2021
 __jbd2_journal_unfile_buffer+0x60/0xb0 fs/jbd2/transaction.c:2035
 __jbd2_journal_refile_buffer+0x3d2/0x4a0 fs/jbd2/transaction.c:2581
 jbd2_journal_commit_transaction+0x43ef/0x6b90 fs/jbd2/commit.c:1084
 kjournald2+0x1d0/0x930 fs/jbd2/journal.c:213
 kthread+0x3b1/0x4a0 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296


---
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