syzbot

loop0: detected capacity change from 0 to 2048
UDF-fs: error (device loop0): udf_process_sequence: Primary Volume Descriptor not found!
UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000)
------------[ cut here ]------------
VFS: brelse: Trying to free free buffer
WARNING: CPU: 0 PID: 3546 at fs/buffer.c:1145 __brelse fs/buffer.c:1145 [inline]
WARNING: CPU: 0 PID: 3546 at fs/buffer.c:1145 brelse include/linux/buffer_head.h:326 [inline]
WARNING: CPU: 0 PID: 3546 at fs/buffer.c:1145 __invalidate_bh_lrus fs/buffer.c:1380 [inline]
WARNING: CPU: 0 PID: 3546 at fs/buffer.c:1145 invalidate_bh_lru+0xf8/0x1a0 fs/buffer.c:1393
Modules linked in:
CPU: 0 PID: 3546 Comm: syz-executor793 Not tainted 6.1.57-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023
RIP: 0010:__brelse fs/buffer.c:1145 [inline]
RIP: 0010:brelse include/linux/buffer_head.h:326 [inline]
RIP: 0010:__invalidate_bh_lrus fs/buffer.c:1380 [inline]
RIP: 0010:invalidate_bh_lru+0xf8/0x1a0 fs/buffer.c:1393
Code: 00 e8 2c c0 e0 ff f0 ff 0b eb 21 e8 12 98 89 ff 41 80 3c 2e 00 75 26 eb 2c e8 04 98 89 ff 48 c7 c7 20 ce f9 8a e8 28 92 51 ff <0f> 0b 48 bd 00 00 00 00 00 fc ff df 41 80 3c 2e 00 74 08 4c 89 ff
RSP: 0018:ffffc90003a3f6c8 EFLAGS: 00010046
RAX: c2aa8b301ef35b00 RBX: ffff888072ed6df8 RCX: ffff888026185940
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff81526dae R09: ffffed1017304f1c
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8880b9835d38
R13: 0000000000000010 R14: 1ffff11017306ba9 R15: ffff8880b9835d48
FS:  0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f71b200ced8 CR3: 000000007ec93000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 smp_call_function_many_cond+0x1cda/0x33d0 kernel/smp.c:978
 on_each_cpu_cond_mask+0x3b/0x80 kernel/smp.c:1155
 kill_bdev block/bdev.c:75 [inline]
 blkdev_flush_mapping+0x14a/0x2b0 block/bdev.c:662
 blkdev_put_whole block/bdev.c:693 [inline]
 blkdev_put+0x4c0/0x750 block/bdev.c:953
 deactivate_locked_super+0xa0/0x110 fs/super.c:332
 cleanup_mnt+0x490/0x520 fs/namespace.c:1186
 task_work_run+0x246/0x300 kernel/task_work.c:179
 exit_task_work include/linux/task_work.h:38 [inline]
 do_exit+0xa73/0x26a0 kernel/exit.c:869
 do_group_exit+0x202/0x2b0 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+0x3b/0x40 kernel/exit.c:1028
 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: 0033:0x7f4bb4dbb649
Code: Unable to access opcode bytes at 0x7f4bb4dbb61f.
RSP: 002b:00007fff6937c828 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f4bb4dbb649
RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001
RBP: 00007f4bb4e46370 R08: ffffffffffffffb0 R09: 000000ff00ff4650
R10: 0000000000000c17 R11: 0000000000000246 R12: 00007f4bb4e46370
R13: 0000000000000000 R14: 00007f4bb4e470e0 R15: 00007f4bb4d863a0
 </TASK>