loop0: detected capacity change from 0 to 128
oldfs: cannot read superblock
------------[ cut here ]------------
VFS: brelse: Trying to free free buffer
WARNING: CPU: 0 PID: 5056 at fs/buffer.c:1235 __brelse fs/buffer.c:1235 [inline]
WARNING: CPU: 0 PID: 5056 at fs/buffer.c:1235 brelse include/linux/buffer_head.h:309 [inline]
WARNING: CPU: 0 PID: 5056 at fs/buffer.c:1235 __invalidate_bh_lrus fs/buffer.c:1487 [inline]
WARNING: CPU: 0 PID: 5056 at fs/buffer.c:1235 invalidate_bh_lru+0x102/0x1b0 fs/buffer.c:1500
Modules linked in:
CPU: 0 PID: 5056 Comm: syz-executor870 Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:__brelse fs/buffer.c:1235 [inline]
RIP: 0010:brelse include/linux/buffer_head.h:309 [inline]
RIP: 0010:__invalidate_bh_lrus fs/buffer.c:1487 [inline]
RIP: 0010:invalidate_bh_lru+0x102/0x1b0 fs/buffer.c:1500
Code: 64 41 dd ff f0 ff 0b eb 25 e8 ba 3d 7d ff 41 80 3c 2e 00 75 2a eb 30 e8 ac 3d 7d ff 90 48 c7 c7 20 d0 b8 8b e8 df 11 40 ff 90 <0f> 0b 90 90 48 bd 00 00 00 00 00 fc ff df 41 80 3c 2e 00 74 08 4c
RSP: 0018:ffffc9000411f908 EFLAGS: 00010046
RAX: 3e48b8a36cf33900 RBX: ffff888076d554e8 RCX: ffff88802ec40000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff8157cb22 R09: 1ffff110172851a2
R10: dffffc0000000000 R11: ffffed10172851a3 R12: ffff8880b9439030
R13: 0000000000000000 R14: 1ffff11017287206 R15: ffff8880b9439030
FS:  000055555d1b0380(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000560bb27e2310 CR3: 00000000288bc000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 csd_do_func kernel/smp.c:133 [inline]
 smp_call_function_many_cond+0x15ca/0x2960 kernel/smp.c:846
 on_each_cpu_cond_mask+0x3f/0x80 kernel/smp.c:1023
 kill_bdev block/bdev.c:84 [inline]
 blkdev_flush_mapping+0x14c/0x2b0 block/bdev.c:644
 blkdev_put_whole block/bdev.c:675 [inline]
 bdev_release+0x6e8/0xa20 block/bdev.c:1044
 blkdev_release+0x15/0x20 block/fops.c:628
 __fput+0x429/0x8a0 fs/file_table.c:422
 task_work_run+0x24f/0x310 kernel/task_work.c:180
 ptrace_notify+0x2d2/0x380 kernel/signal.c:2404
 ptrace_report_syscall include/linux/ptrace.h:415 [inline]
 ptrace_report_syscall_exit include/linux/ptrace.h:477 [inline]
 syscall_exit_work+0xbd/0x170 kernel/entry/common.c:167
 syscall_exit_to_user_mode_prepare kernel/entry/common.c:194 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:199 [inline]
 syscall_exit_to_user_mode+0x273/0x360 kernel/entry/common.c:212
 do_syscall_64+0x10a/0x240 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7f1b50e07bba
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 5e 04 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffdb42ccc38 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffea RBX: 00007ffdb42ccc50 RCX: 00007f1b50e07bba
RDX: 0000000020000080 RSI: 0000000020000000 RDI: 00007ffdb42ccc50
RBP: 0000000000000004 R08: 00007ffdb42ccc90 R09: 00ff373737373737
R10: 0000000000004000 R11: 0000000000000282 R12: 0000000000004000
R13: 00007ffdb42ccc90 R14: 0000000000000003 R15: 0000000000010000
 </TASK>