------------[ cut here ]------------
VFS: brelse: Trying to free free buffer
WARNING: CPU: 0 PID: 3546 at fs/buffer.c:1148 __brelse fs/buffer.c:1148 [inline]
WARNING: CPU: 0 PID: 3546 at fs/buffer.c:1148 brelse include/linux/buffer_head.h:325 [inline]
WARNING: CPU: 0 PID: 3546 at fs/buffer.c:1148 __invalidate_bh_lrus fs/buffer.c:1394 [inline]
WARNING: CPU: 0 PID: 3546 at fs/buffer.c:1148 invalidate_bh_lru+0xf8/0x1a0 fs/buffer.c:1407
Modules linked in:
CPU: 0 PID: 3546 Comm: udevd Not tainted 5.15.169-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:__brelse fs/buffer.c:1148 [inline]
RIP: 0010:brelse include/linux/buffer_head.h:325 [inline]
RIP: 0010:__invalidate_bh_lrus fs/buffer.c:1394 [inline]
RIP: 0010:invalidate_bh_lru+0xf8/0x1a0 fs/buffer.c:1407
Code: 00 e8 0c 61 e4 ff f0 ff 0b eb 21 e8 82 95 9a ff 41 80 3c 2e 00 75 26 eb 2c e8 74 95 9a ff 48 c7 c7 a0 6b 97 8a e8 f8 30 66 ff <0f> 0b 48 bd 00 00 00 00 00 fc ff df 41 80 3c 2e 00 74 08 4c 89 ff
RSP: 0018:ffffc90000007f60 EFLAGS: 00010046
RAX: 72834211c1109100 RBX: ffff888060fe87a0 RCX: ffff88807cf38000
RDX: 0000000000010000 RSI: 0000000080010001 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff81669a2c R09: ffffed1017204f24
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8880b9036538
R13: 0000000000000000 R14: 1ffff11017206ca7 R15: ffff8880b9036538
FS:  00007f678b455c80(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555761a05c8 CR3: 000000002aa12000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 flush_smp_call_function_queue+0x2b5/0x760 kernel/smp.c:628
 __sysvec_call_function_single+0x9a/0x250 arch/x86/kernel/smp.c:248
 instr_sysvec_call_function_single arch/x86/kernel/smp.c:243 [inline]
 sysvec_call_function_single+0x98/0xc0 arch/x86/kernel/smp.c:243
 </IRQ>
 <TASK>
 asm_sysvec_call_function_single+0x16/0x20 arch/x86/include/asm/idtentry.h:684
RIP: 0010:unwind_next_frame+0x0/0x1fa0 arch/x86/kernel/unwind_orc.c:423
Code: eb 02 31 c0 5b 41 5e 41 5f c3 44 89 f1 80 e1 07 80 c1 03 38 c1 7c 95 4c 89 f7 e8 cb a4 91 00 eb 8b 66 0f 1f 84 00 00 00 00 00 <55> 41 57 41 56 41 55 41 54 53 48 81 ec 80 00 00 00 49 89 ff 48 b8
RSP: 0018:ffffc90002d97498 EFLAGS: 00000202
RAX: 0000000000000001 RBX: ffffc90002d974a0 RCX: 0000000080000000
RDX: dffffc0000000000 RSI: ffffffff81ca13bb RDI: ffffc90002d974a0
RBP: ffffc90002d97530 R08: 0000000000000000 R09: ffffc90002d97590
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88807cf38000
R13: ffffffff816e0990 R14: ffffc90002d97580 R15: 0000000000000000
 arch_stack_walk+0x10d/0x140 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x113/0x1c0 kernel/stacktrace.c:122
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track+0x4b/0x80 mm/kasan/common.c:46
 kasan_set_free_info+0x1f/0x40 mm/kasan/generic.c:360
 ____kasan_slab_free+0xd8/0x120 mm/kasan/common.c:366
 kasan_slab_free include/linux/kasan.h:230 [inline]
 slab_free_hook mm/slub.c:1705 [inline]
 slab_free_freelist_hook+0xdd/0x160 mm/slub.c:1731
 slab_free mm/slub.c:3499 [inline]
 kfree+0xf1/0x270 mm/slub.c:4559
 tomoyo_realpath_from_path+0x5ad/0x5e0 security/tomoyo/realpath.c:291
 tomoyo_get_realpath security/tomoyo/file.c:151 [inline]
 tomoyo_path_perm+0x273/0x6b0 security/tomoyo/file.c:822
 security_inode_getattr+0xcf/0x120 security/security.c:1348
 vfs_getattr+0x26/0x360 fs/stat.c:157
 vfs_statx+0x18f/0x3b0 fs/stat.c:225
 vfs_fstatat fs/stat.c:243 [inline]
 __do_sys_newfstatat fs/stat.c:411 [inline]
 __se_sys_newfstatat fs/stat.c:405 [inline]
 __x64_sys_newfstatat+0x12c/0x1b0 fs/stat.c:405
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f678b5805f4
Code: 64 c7 00 09 00 00 00 83 c8 ff c3 48 89 f2 b9 00 01 00 00 48 89 fe bf 9c ff ff ff e9 00 00 00 00 41 89 ca b8 06 01 00 00 0f 05 <45> 31 c0 3d 00 f0 ff ff 76 10 48 8b 15 03 a8 0d 00 f7 d8 41 83 c8
RSP: 002b:00007ffc7253efd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000106
RAX: ffffffffffffffda RBX: 00007ffc72540978 RCX: 00007f678b5805f4
RDX: 00007ffc7253efe8 RSI: 00007ffc7253f478 RDI: 00000000ffffff9c
RBP: 00007ffc7253f078 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc7253f478
R13: 00007ffc7253efe8 R14: 000055f4373f2910 R15: 0000000000000000
 </TASK>
----------------
Code disassembly (best guess):
   0:	eb 02                	jmp    0x4
   2:	31 c0                	xor    %eax,%eax
   4:	5b                   	pop    %rbx
   5:	41 5e                	pop    %r14
   7:	41 5f                	pop    %r15
   9:	c3                   	ret
   a:	44 89 f1             	mov    %r14d,%ecx
   d:	80 e1 07             	and    $0x7,%cl
  10:	80 c1 03             	add    $0x3,%cl
  13:	38 c1                	cmp    %al,%cl
  15:	7c 95                	jl     0xffffffac
  17:	4c 89 f7             	mov    %r14,%rdi
  1a:	e8 cb a4 91 00       	call   0x91a4ea
  1f:	eb 8b                	jmp    0xffffffac
  21:	66 0f 1f 84 00 00 00 	nopw   0x0(%rax,%rax,1)
  28:	00 00
* 2a:	55                   	push   %rbp <-- trapping instruction
  2b:	41 57                	push   %r15
  2d:	41 56                	push   %r14
  2f:	41 55                	push   %r13
  31:	41 54                	push   %r12
  33:	53                   	push   %rbx
  34:	48 81 ec 80 00 00 00 	sub    $0x80,%rsp
  3b:	49 89 ff             	mov    %rdi,%r15
  3e:	48                   	rex.W
  3f:	b8                   	.byte 0xb8