------------[ cut here ]------------
VFS: brelse: Trying to free free buffer
WARNING: CPU: 1 PID: 3641 at fs/buffer.c:1145 __brelse fs/buffer.c:1145 [inline]
WARNING: CPU: 1 PID: 3641 at fs/buffer.c:1145 brelse+0x78/0xa0 include/linux/buffer_head.h:327
Modules linked in:
CPU: 1 PID: 3641 Comm: syz-executor.1 Not tainted 6.0.0-rc7-syzkaller-00081-gc3e0e1e23c70 #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 07 1b e1 ff f0 ff 0b eb 1c e8 0d 25 8e ff eb 15 e8 06 25 8e ff 48 c7 c7 a0 9a 9d 8a 31 c0 e8 d8 b1 56 ff <0f> 0b 5b 5d c3 89 d9 80 e1 07 80 c1 03 38 c1 7c af 48 89 df e8 0f
RSP: 0000:ffffc90003a8fae8 EFLAGS: 00010046
RAX: 0ee7fd633772b600 RBX: ffff8880415bf6b8 RCX: ffff888079a2bb00
RDX: 0000000000000000 RSI: 0000000080000002 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff816bd38d R09: ffffed1017364f14
R10: ffffed1017364f14 R11: 1ffff11017364f13 R12: ffff8880b9b35d10
R13: 0000000000000002 R14: ffff8880b9b35cf8 R15: dffffc0000000000
FS:  00005555562d0400(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555562d9848 CR3: 000000004b7eb000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __invalidate_bh_lrus+0xe4/0x3c0 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
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 exit_to_user_mode_loop+0x124/0x150 kernel/entry/common.c:169
 exit_to_user_mode_prepare+0xb2/0x140 kernel/entry/common.c:201
 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline]
 syscall_exit_to_user_mode+0x26/0x60 kernel/entry/common.c:294
 do_syscall_64+0x49/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fb72268ba17
Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 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:00007ffdd3b68f68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fb72268ba17
RDX: 00007ffdd3b6903b RSI: 000000000000000a RDI: 00007ffdd3b69030
RBP: 00007ffdd3b69030 R08: 00000000ffffffff R09: 00007ffdd3b68e00
R10: 00005555562d18b3 R11: 0000000000000246 R12: 00007fb7226e45f6
R13: 00007ffdd3b6a0f0 R14: 00005555562d1810 R15: 00007ffdd3b6a130
 </TASK>