------------[ cut here ]------------
VFS: brelse: Trying to free free buffer
WARNING: CPU: 1 PID: 5827 at fs/buffer.c:1229 __brelse+0x71/0xa0 fs/buffer.c:1229
Modules linked in:
CPU: 1 UID: 0 PID: 5827 Comm: syz-executor Not tainted 6.13.0-rc5-syzkaller-00163-gab75170520d4 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:__brelse+0x71/0xa0 fs/buffer.c:1229
Code: e8 04 d5 75 ff 48 89 df be 04 00 00 00 e8 97 3f dc ff f0 ff 0b eb 17 e8 ed d4 75 ff 90 48 c7 c7 e0 03 19 8c e8 b0 78 36 ff 90 <0f> 0b 90 90 5b 5d e9 bf 91 c6 09 89 d9 80 e1 07 80 c1 03 38 c1 7c
RSP: 0018:ffffc900041afc88 EFLAGS: 00010246
RAX: 2f3e6bb17873e400 RBX: ffff88805d3ae230 RCX: ffff888066990000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff81602a82 R09: 1ffff110170e519a
R10: dffffc0000000000 R11: ffffed10170e519b R12: ffff888060642060
R13: dffffc0000000000 R14: 0000000000000001 R15: 1ffff1100c0c840c
FS:  000055558ad43500(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000000 CR3: 0000000062086000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 exfat_free_bitmap+0xa9/0x150 fs/exfat/balloc.c:120
 exfat_put_super+0x54/0xa0 fs/exfat/super.c:39
 generic_shutdown_super+0x13b/0x2d0 fs/super.c:642
 kill_block_super+0x44/0x90 fs/super.c:1710
 exfat_kill_sb+0x41/0x80 fs/exfat/super.c:817
 deactivate_locked_super+0xc6/0x130 fs/super.c:473
 cleanup_mnt+0x41f/0x4b0 fs/namespace.c:1373
 task_work_run+0x251/0x310 kernel/task_work.c:239
 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:329 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x13f/0x340 kernel/entry/common.c:218
 do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fdea1b87057
Code: a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 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 00 f0 ff ff 77 01 c3 48 c7 c2 a8 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007fff331c6758 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fdea1b87057
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fff331c6810
RBP: 00007fff331c6810 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007fff331c7890
R13: 00007fdea1c018f4 R14: 00007fff331c78d0 R15: 0000000000000085
 </TASK>