------------[ cut here ]------------
VFS: brelse: Trying to free free buffer
WARNING: CPU: 1 PID: 7781 at fs/buffer.c:1229 __brelse+0x71/0xa0 fs/buffer.c:1229
Modules linked in:
CPU: 1 UID: 0 PID: 7781 Comm: syz.0.389 Not tainted 6.13.0-rc5-syzkaller-00012-g0bc21e701a6f #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 f0 78 36 ff 90 <0f> 0b 90 90 5b 5d e9 ff a1 c6 09 89 d9 80 e1 07 80 c1 03 38 c1 7c
RSP: 0018:ffffc9000352f798 EFLAGS: 00010246
RAX: cc1124361e883f00 RBX: ffff888057138230 RCX: 0000000000080000
RDX: ffffc9000d041000 RSI: 0000000000009fe5 RDI: 0000000000009fe6
RBP: 0000000000000000 R08: ffffffff81601a82 R09: 1ffff920006a5e90
R10: dffffc0000000000 R11: fffff520006a5e91 R12: 0000000000000000
R13: 0000000000000001 R14: 1ffff920006a5f71 R15: 0000000000000000
FS:  00007f90eaceb6c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005636b221f950 CR3: 000000002ffda000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 brelse include/linux/buffer_head.h:324 [inline]
 exfat_put_dentry_set+0x182/0x2b0 fs/exfat/dir.c:553
 exfat_add_entry+0x5e0/0xaa0 fs/exfat/namei.c:519
 exfat_mkdir+0x1c7/0x580 fs/exfat/namei.c:858
 vfs_mkdir+0x2fb/0x4f0 fs/namei.c:4311
 do_mkdirat+0x264/0x3a0 fs/namei.c:4334
 __do_sys_mkdirat fs/namei.c:4349 [inline]
 __se_sys_mkdirat fs/namei.c:4347 [inline]
 __x64_sys_mkdirat+0x87/0xa0 fs/namei.c:4347
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f90e9f85d29
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f90eaceb038 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007f90ea175fa0 RCX: 00007f90e9f85d29
RDX: 00000000000001c0 RSI: 0000000020000040 RDI: ffffffffffffff9c
RBP: 00007f90ea001b08 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f90ea175fa0 R15: 00007ffdf2b9f6b8
 </TASK>