[syzbot] [btrfs?] WARNING in btrfs_put_transaction (2)

From: syzbot
Date: Mon Jun 03 2024 - 05:44:08 EST


Hello,

syzbot found the following issue on:

HEAD commit: 4a4be1ad3a6e Revert "vfs: Delete the associated dentry whe..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=150a5f72980000
kernel config: https://syzkaller.appspot.com/x/.config?x=733cc7a95171d8e7
dashboard link: https://syzkaller.appspot.com/bug?extid=0fecc032fa134afd49df
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
userspace arch: i386

Unfortunately, I don't have any reproducer for this issue yet.

Downloadable assets:
disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/7bc7510fe41f/non_bootable_disk-4a4be1ad.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/a9bbdc63efe9/vmlinux-4a4be1ad.xz
kernel image: https://storage.googleapis.com/syzbot-assets/ed08b308e5d6/bzImage-4a4be1ad.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+0fecc032fa134afd49df@xxxxxxxxxxxxxxxxxxxxxxxxx

BTRFS warning (device loop2 state EA): Skipping commit of aborted transaction.
BTRFS: error (device loop2 state EA) in cleanup_transaction:1999: errno=-5 IO failure
------------[ cut here ]------------
WARNING: CPU: 1 PID: 5237 at fs/btrfs/transaction.c:146 btrfs_put_transaction+0x3d5/0x4d0 fs/btrfs/transaction.c:146
Modules linked in:
CPU: 1 PID: 5237 Comm: syz-executor.2 Not tainted 6.10.0-rc1-syzkaller-00027-g4a4be1ad3a6e #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:btrfs_put_transaction+0x3d5/0x4d0 fs/btrfs/transaction.c:146
Code: fe 90 0f 0b 90 e9 b4 fc ff ff 4c 89 e7 e8 43 3e 5f fe e9 93 fc ff ff 48 89 df e8 66 3e 5f fe e9 2a fd ff ff e8 bc 0b 02 fe 90 <0f> 0b 90 e9 97 fd ff ff e8 ae 0b 02 fe 90 0f 0b 90 e9 49 ff ff ff
RSP: 0018:ffffc90002d7fb38 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff88802b0af028 RCX: ffffffff838c7071
RDX: ffff888019844880 RSI: ffffffff838c73b4 RDI: ffff88802b0af320
RBP: ffff88802b0af000 R08: 0000000000000005 R09: 0000000000000001
R10: 0000000000000001 R11: 0000000000000001 R12: ffff88802b0af010
R13: ffff888000e94bf8 R14: ffff888000e94520 R15: ffff888000e94cc8
FS: 0000000000000000(0000) GS:ffff88802c100000(0063) knlGS:000000005816a400
CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 000000005816b000 CR3: 0000000043444000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
cleanup_transaction fs/btrfs/transaction.c:2047 [inline]
btrfs_commit_transaction+0xdf4/0x3b40 fs/btrfs/transaction.c:2582
btrfs_sync_fs+0x13b/0x7c0 fs/btrfs/super.c:1014
sync_filesystem+0x1cc/0x290 fs/sync.c:66
generic_shutdown_super+0x7e/0x3d0 fs/super.c:621
kill_anon_super+0x3a/0x60 fs/super.c:1226
btrfs_kill_super+0x3b/0x50 fs/btrfs/super.c:2096
deactivate_locked_super+0xbe/0x1a0 fs/super.c:473
deactivate_super+0xde/0x100 fs/super.c:506
cleanup_mnt+0x222/0x450 fs/namespace.c:1267
task_work_run+0x14e/0x250 kernel/task_work.c:180
resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0x278/0x2a0 kernel/entry/common.c:218
__do_fast_syscall_32+0x80/0x120 arch/x86/entry/common.c:389
do_fast_syscall_32+0x32/0x80 arch/x86/entry/common.c:411
entry_SYSENTER_compat_after_hwframe+0x84/0x8e
RIP: 0023:0xf729a579
Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00
RSP: 002b:00000000ff98d248 EFLAGS: 00000292 ORIG_RAX: 0000000000000034
RAX: 0000000000000000 RBX: 00000000ff98d2f0 RCX: 0000000000000009
RDX: 00000000f73f0ff4 RSI: 00000000f7341361 RDI: 00000000ff98e394
RBP: 00000000ff98d2f0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000292 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
</TASK>
----------------
Code disassembly (best guess), 2 bytes skipped:
0: 10 06 adc %al,(%rsi)
2: 03 74 b4 01 add 0x1(%rsp,%rsi,4),%esi
6: 10 07 adc %al,(%rdi)
8: 03 74 b0 01 add 0x1(%rax,%rsi,4),%esi
c: 10 08 adc %cl,(%rax)
e: 03 74 d8 01 add 0x1(%rax,%rbx,8),%esi
1e: 00 51 52 add %dl,0x52(%rcx)
21: 55 push %rbp
22: 89 e5 mov %esp,%ebp
24: 0f 34 sysenter
26: cd 80 int $0x80
* 28: 5d pop %rbp <-- trapping instruction
29: 5a pop %rdx
2a: 59 pop %rcx
2b: c3 ret
2c: 90 nop
2d: 90 nop
2e: 90 nop
2f: 90 nop
30: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi
37: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi


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