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: 5585 at fs/buffer.c:1239 __brelse fs/buffer.c:1239 [inline]
WARNING: CPU: 0 PID: 5585 at fs/buffer.c:1239 brelse include/linux/buffer_head.h:325 [inline]
WARNING: CPU: 0 PID: 5585 at fs/buffer.c:1239 __invalidate_bh_lrus fs/buffer.c:1508 [inline]
WARNING: CPU: 0 PID: 5585 at fs/buffer.c:1239 invalidate_bh_lru+0x102/0x1b0 fs/buffer.c:1521
Modules linked in:
CPU: 0 UID: 0 PID: 5585 Comm: syz-executor.0 Not tainted 6.11.0-rc3-syzkaller-00368-gccdbf91fdf5a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:__brelse fs/buffer.c:1239 [inline]
RIP: 0010:brelse include/linux/buffer_head.h:325 [inline]
RIP: 0010:__invalidate_bh_lrus fs/buffer.c:1508 [inline]
RIP: 0010:invalidate_bh_lru+0x102/0x1b0 fs/buffer.c:1521
Code: b4 45 dd ff f0 ff 0b eb 25 e8 2a 27 79 ff 41 80 3c 2e 00 75 2a eb 30 e8 1c 27 79 ff 90 48 c7 c7 a0 33 f9 8b e8 0f 4e 3b 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:ffffc90004397a28 EFLAGS: 00010046
RAX: 23f1fdcbe023c900 RBX: ffff88807ef51400 RCX: ffff888024595a00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff8155b3f2 R09: 1ffff1101724519a
R10: dffffc0000000000 R11: ffffed101724519b R12: ffff8880b9239620
R13: 0000000000000000 R14: 1ffff110172472c4 R15: ffff8880b9239620
FS:  00007fddd33ff6c0(0000) GS:ffff8880b9200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000560d4c2eb298 CR3: 0000000026184000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 csd_do_func kernel/smp.c:134 [inline]
 smp_call_function_many_cond+0x15d7/0x29d0 kernel/smp.c:847
 on_each_cpu_cond_mask+0x3f/0x80 kernel/smp.c:1023
 kill_bdev block/bdev.c:89 [inline]
 blkdev_flush_mapping+0xfe/0x250 block/bdev.c:664
 blkdev_put_whole block/bdev.c:671 [inline]
 bdev_release+0x466/0x700 block/bdev.c:1096
 blkdev_release+0x15/0x20 block/fops.c:638
 __fput+0x24a/0x8a0 fs/file_table.c:422
 task_work_run+0x24f/0x310 kernel/task_work.c:228
 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+0x168/0x370 kernel/entry/common.c:218
 do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fddd387f56a
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 09 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fddd33feef8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffea RBX: 00007fddd33fef80 RCX: 00007fddd387f56a
RDX: 0000000020000080 RSI: 0000000020000000 RDI: 00007fddd33fef40
RBP: 0000000020000080 R08: 00007fddd33fef80 R09: 0000000000004000
R10: 0000000000004000 R11: 0000000000000246 R12: 0000000020000000
R13: 00007fddd33fef40 R14: 0000000000009e81 R15: 0000000020000140
 </TASK>