BTRFS info (device loop2): last unmount of filesystem 05246248-2a57-47e4-a3f3-b6c9b0cbca9e
assertion failed: percpu_counter_sum_positive(em_counter) == 0, in fs/btrfs/disk-io.c:1274
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kernel BUG at fs/btrfs/disk-io.c:1274!
Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI
CPU: 0 PID: 5219 Comm: syz-executor.2 Not tainted 6.10.0-rc1-syzkaller-00267-gcc8ed4d0a848 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:btrfs_free_fs_info+0x3c6/0x470 fs/btrfs/disk-io.c:1274
Code: e9 3f 17 42 fe e8 da ae 03 fe b9 fa 04 00 00 48 c7 c2 c0 9b 76 8b 48 c7 c6 60 ad 76 8b 48 c7 c7 40 9c 76 8b e8 eb 4a e4 fd 90 <0f> 0b e8 03 e0 60 fe e9 60 fd ff ff e8 f9 df 60 fe e9 02 fd ff ff
RSP: 0018:ffffc90003787da8 EFLAGS: 00010286
RAX: 000000000000005a RBX: 0000000000000005 RCX: ffffffff816f3159
RDX: 0000000000000000 RSI: ffffffff816fbd56 RDI: 0000000000000005
RBP: ffff888069bd4000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000080000000 R11: 0000000000000000 R12: ffff888069bd50f0
R13: ffff88804abbce00 R14: ffffed1003e59a3d R15: ffff88804abbce40
FS: 0000000000000000(0000) GS:ffff88802c000000(0063) knlGS:00000000566d8400
CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 000056172fd2cb70 CR3: 000000004a95a000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
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: 0023:0xf72b6579
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:00000000ff822ae8 EFLAGS: 00000292 ORIG_RAX: 0000000000000034
RAX: 0000000000000000 RBX: 00000000ff822b90 RCX: 0000000000000009
RDX: 00000000f740cff4 RSI: 00000000f735d361 RDI: 00000000ff823c34
RBP: 00000000ff822b90 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000292 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:btrfs_free_fs_info+0x3c6/0x470 fs/btrfs/disk-io.c:1274
Code: e9 3f 17 42 fe e8 da ae 03 fe b9 fa 04 00 00 48 c7 c2 c0 9b 76 8b 48 c7 c6 60 ad 76 8b 48 c7 c7 40 9c 76 8b e8 eb 4a e4 fd 90 <0f> 0b e8 03 e0 60 fe e9 60 fd ff ff e8 f9 df 60 fe e9 02 fd ff ff
RSP: 0018:ffffc90003787da8 EFLAGS: 00010286
RAX: 000000000000005a RBX: 0000000000000005 RCX: ffffffff816f3159
RDX: 0000000000000000 RSI: ffffffff816fbd56 RDI: 0000000000000005
RBP: ffff888069bd4000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000080000000 R11: 0000000000000000 R12: ffff888069bd50f0
R13: ffff88804abbce00 R14: ffffed1003e59a3d R15: ffff88804abbce40
FS: 0000000000000000(0000) GS:ffff88802c000000(0063) knlGS:00000000566d8400
CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 000056172fd2cb70 CR3: 000000004a95a000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
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