From: syzbot <syzbot+2bcc0d79e548c4f62a59@syzkaller.appspotmail.com>
To: axboe@kernel.dk, linux-block@vger.kernel.org,
linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com
Subject: [syzbot] [block?] WARNING in blkdev_put (2)
Date: Thu, 23 Feb 2023 23:25:53 -0800 [thread overview]
Message-ID: <00000000000016493d05f56d0aae@google.com> (raw)
Hello,
syzbot found the following issue on:
HEAD commit: d2af0fa4bfa4 Add linux-next specific files for 20230220
git tree: linux-next
console+strace: https://syzkaller.appspot.com/x/log.txt?x=170d2ef0c80000
kernel config: https://syzkaller.appspot.com/x/.config?x=594e1a56901fd35d
dashboard link: https://syzkaller.appspot.com/bug?extid=2bcc0d79e548c4f62a59
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=1227e837480000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=122d8ca0c80000
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/83b78c113e8e/disk-d2af0fa4.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/d59f9b2c9091/vmlinux-d2af0fa4.xz
kernel image: https://storage.googleapis.com/syzbot-assets/2726c16c1d3b/bzImage-d2af0fa4.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+2bcc0d79e548c4f62a59@syzkaller.appspotmail.com
------------[ cut here ]------------
WARNING: CPU: 1 PID: 5080 at block/bdev.c:845 blkdev_put+0x6ca/0x770 block/bdev.c:845
Modules linked in:
CPU: 1 PID: 5080 Comm: syz-executor158 Not tainted 6.2.0-rc8-next-20230220-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023
RIP: 0010:blkdev_put+0x6ca/0x770 block/bdev.c:845
Code: 48 8b 3c 24 e8 b7 7c da fd e9 99 fa ff ff e8 8d 7c da fd e9 cf fb ff ff 4c 89 ff e8 80 7c da fd e9 80 fd ff ff e8 e6 ea 88 fd <0f> 0b e9 ef fc ff ff e8 8a 7c da fd e9 f3 fa ff ff 48 8b 3c 24 e8
RSP: 0018:ffffc90003cefc88 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff888144c49600 RCX: 0000000000000000
RDX: ffff88807c2f8000 RSI: ffffffff83fbb8da RDI: 0000000000000005
RBP: ffff888146bc0000 R08: 0000000000000005 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000000 R12: 00000000484e009f
R13: ffff888144c49628 R14: ffff888146bc0460 R15: ffff888144c49ab8
FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb645428948 CR3: 000000000c571000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
blkdev_close+0x68/0x80 block/fops.c:507
__fput+0x27c/0xa90 fs/file_table.c:321
task_work_run+0x16f/0x270 kernel/task_work.c:179
exit_task_work include/linux/task_work.h:38 [inline]
do_exit+0xb42/0x2b60 kernel/exit.c:869
do_group_exit+0xd4/0x2a0 kernel/exit.c:1019
__do_sys_exit_group kernel/exit.c:1030 [inline]
__se_sys_exit_group kernel/exit.c:1028 [inline]
__x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1028
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fb6453e4639
Code: Unable to access opcode bytes at 0x7fb6453e460f.
RSP: 002b:00007ffcfacb3ec8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007fb645458270 RCX: 00007fb6453e4639
RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffffffffffc0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb645458270
R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001
</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.
syzbot can test patches for this issue, for details see:
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next reply other threads:[~2023-02-24 7:26 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-02-24 7:25 syzbot [this message]
2023-03-02 19:33 ` [syzbot] [block?] WARNING in blkdev_put (2) Alexander Egorenkov
2023-03-06 15:00 ` Julian Ruess
2023-03-07 1:42 ` Yu Kuai
2023-03-07 9:19 ` Julian Ruess
2023-03-07 10:55 ` [PATCH] block: fix wrong mode for blkdev_put() from disk_scan_partitions() Yu Kuai
2023-03-07 13:12 ` Jan Kara
2023-03-07 14:25 ` Jens Axboe
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