loop0: detected capacity change from 0 to 2048
UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/09/12 12:00 (1000)
------------[ cut here ]------------
VFS: brelse: Trying to free free buffer
WARNING: CPU: 0 PID: 3609 at fs/buffer.c:1145 __brelse fs/buffer.c:1145 [inline]
WARNING: CPU: 0 PID: 3609 at fs/buffer.c:1145 brelse+0x78/0xa0 include/linux/buffer_head.h:327
Modules linked in:
CPU: 0 PID: 3609 Comm: syz-executor256 Not tainted 6.0.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022
RIP: 0010:__brelse fs/buffer.c:1145 [inline]
RIP: 0010:brelse+0x78/0xa0 include/linux/buffer_head.h:327
Code: df be 04 00 00 00 e8 37 19 e1 ff f0 ff 0b eb 1c e8 2d 23 8e ff eb 15 e8 26 23 8e ff 48 c7 c7 20 9b 9d 8a 31 c0 e8 f8 af 56 ff <0f> 0b 5b 5d c3 89 d9 80 e1 07 80 c1 03 38 c1 7c af 48 89 df e8 3f
RSP: 0018:ffffc9000396f9a8 EFLAGS: 00010046
RAX: 401121a76d01bd00 RBX: ffff888075b6ec28 RCX: ffff888022598000
RDX: 0000000000000000 RSI: 0000000080000002 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff816bd38d R09: ffffed1017344f14
R10: ffffed1017344f14 R11: 1ffff11017344f13 R12: ffff8880b9a35d08
R13: 0000000000000002 R14: ffff8880b9a35cf8 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f244b7f77f0 CR3: 0000000026373000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __invalidate_bh_lrus+0xaa/0x3c0 fs/buffer.c:1391
 invalidate_bh_lru+0x66/0xb0 fs/buffer.c:1404
 smp_call_function_many_cond+0xe88/0x16a0 kernel/smp.c:979
 on_each_cpu_cond_mask+0x3b/0x80 kernel/smp.c:1154
 kill_bdev block/bdev.c:74 [inline]
 blkdev_flush_mapping+0x149/0x2c0 block/bdev.c:661
 blkdev_put_whole block/bdev.c:692 [inline]
 blkdev_put+0x4a5/0x730 block/bdev.c:952
 deactivate_locked_super+0xa7/0xf0 fs/super.c:332
 cleanup_mnt+0x4ce/0x560 fs/namespace.c:1186
 task_work_run+0x146/0x1c0 kernel/task_work.c:177
 exit_task_work include/linux/task_work.h:38 [inline]
 do_exit+0x55e/0x20a0 kernel/exit.c:795
 do_group_exit+0x23b/0x2f0 kernel/exit.c:925
 __do_sys_exit_group kernel/exit.c:936 [inline]
 __se_sys_exit_group kernel/exit.c:934 [inline]
 __x64_sys_exit_group+0x3b/0x40 kernel/exit.c:934
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f868ad71cc9
Code: Unable to access opcode bytes at RIP 0x7f868ad71c9f.
RSP: 002b:00007fffe51f9328 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f868adf9450 RCX: 00007f868ad71cc9
RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001
RBP: 0000000000000001 R08: ffffffffffffffb8 R09: 000000ff8adf3e00
R10: 000000ff8adf3e00 R11: 0000000000000246 R12: 00007f868adf9450
R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001
 </TASK>