------------[ cut here ]------------
VFS: brelse: Trying to free free buffer
WARNING: CPU: 1 PID: 10156 at fs/buffer.c:1145 __brelse fs/buffer.c:1145 [inline]
WARNING: CPU: 1 PID: 10156 at fs/buffer.c:1145 brelse+0x78/0xa0 include/linux/buffer_head.h:326
Modules linked in:
CPU: 1 PID: 10156 Comm: udevadm Not tainted 6.1.0-rc7-syzkaller-00200-gc2bf05db6c78 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
RIP: 0010:__brelse fs/buffer.c:1145 [inline]
RIP: 0010:brelse+0x78/0xa0 include/linux/buffer_head.h:326
Code: df be 04 00 00 00 e8 97 7e e0 ff f0 ff 0b eb 1c e8 9d 5a 8c ff eb 15 e8 96 5a 8c ff 48 c7 c7 c0 03 fe 8a 31 c0 e8 08 f7 53 ff <0f> 0b 5b 5d c3 89 d9 80 e1 07 80 c1 03 38 c1 7c af 48 89 df e8 9f
RSP: 0018:ffffc900001e0f18 EFLAGS: 00010046
RAX: 373d046c1a574700 RBX: ffff8880714a0d10 RCX: ffff88802d989d40
RDX: 0000000080010001 RSI: 0000000080010001 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff816e560d R09: ffffed1017324f1c
R10: ffffed1017324f1c R11: 1ffff11017324f1b R12: 0000000000000000
R13: 1ffff11017328022 R14: ffff8880b9935d38 R15: dffffc0000000000
FS:  00007f295ac91840(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd5d0ce0000 CR3: 0000000077417000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 __invalidate_bh_lrus+0x37/0x3c0 fs/buffer.c:1380
 invalidate_bh_lru+0x66/0xb0 fs/buffer.c:1393
 __flush_smp_call_function_queue+0x2cc/0xcd0 kernel/smp.c:630
 __sysvec_call_function_single+0x62/0x70 arch/x86/kernel/smp.c:248
 sysvec_call_function_single+0x8c/0xb0 arch/x86/kernel/smp.c:243
 </IRQ>
 <TASK>
 asm_sysvec_call_function_single+0x16/0x20 arch/x86/include/asm/idtentry.h:657
RIP: 0010:__debug_check_no_obj_freed lib/debugobjects.c:1007 [inline]
RIP: 0010:debug_check_no_obj_freed+0x4c/0x650 lib/debugobjects.c:1020
Code: 49 89 fc 49 81 e4 00 f0 ff ff 49 89 df 4d 29 e7 49 81 c7 ff 0f 00 00 45 31 f6 49 81 ff 00 10 00 00 73 2c 44 3b 35 a8 a4 38 0a <7e> 07 44 89 35 9f a4 38 0a 80 3d f4 2c d2 0d 00 0f 84 79 05 00 00
RSP: 0018:ffffc90015627410 EFLAGS: 00000297
RAX: 373d046c1a574700 RBX: ffff88802cde7000 RCX: 0000000000000001
RDX: dffffc0000000000 RSI: ffffffff8aedb2a0 RDI: 0000000000000001
RBP: 1ffffffff23f8f44 R08: dffffc0000000000 R09: fffffbfff23f8f46
R10: fffffbfff23f8f46 R11: 1ffffffff23f8f45 R12: ffff88802cde7000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 slab_free_hook mm/slub.c:1699 [inline]
 slab_free_freelist_hook+0xcf/0x1a0 mm/slub.c:1750
 slab_free mm/slub.c:3661 [inline]
 __kmem_cache_free+0x71/0x110 mm/slub.c:3674
 tomoyo_realpath_from_path+0x5b9/0x5f0 security/tomoyo/realpath.c:286
 tomoyo_get_realpath security/tomoyo/file.c:151 [inline]
 tomoyo_check_open_permission+0x1f0/0x460 security/tomoyo/file.c:771
 security_file_open+0x50/0x560 security/security.c:1648
 do_dentry_open+0x306/0x11b0 fs/open.c:869
 do_open fs/namei.c:3557 [inline]
 path_openat+0x25fc/0x2df0 fs/namei.c:3714
 do_filp_open+0x264/0x4f0 fs/namei.c:3741
 do_sys_openat2+0x124/0x4e0 fs/open.c:1310
 do_sys_open fs/open.c:1326 [inline]
 __do_sys_openat fs/open.c:1342 [inline]
 __se_sys_openat fs/open.c:1337 [inline]
 __x64_sys_openat+0x243/0x290 fs/open.c:1337
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f295a925697
Code: 25 00 00 41 00 3d 00 00 41 00 74 37 64 8b 04 25 18 00 00 00 85 c0 75 5b 44 89 e2 48 89 ee bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 0f 87 85 00 00 00 48 83 c4 68 5d 41 5c c3 0f 1f
RSP: 002b:00007fffc9cf4e10 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000557b75caf2a0 RCX: 00007f295a925697
RDX: 0000000000080000 RSI: 00007fffc9cf4f48 RDI: 00000000ffffff9c
RBP: 00007fffc9cf4f48 R08: 0000000000000008 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000080000
R13: 0000557b75caf2a0 R14: 0000000000000001 R15: 0000557b75cafda0
 </TASK>
----------------
Code disassembly (best guess):
   0:	49 89 fc             	mov    %rdi,%r12
   3:	49 81 e4 00 f0 ff ff 	and    $0xfffffffffffff000,%r12
   a:	49 89 df             	mov    %rbx,%r15
   d:	4d 29 e7             	sub    %r12,%r15
  10:	49 81 c7 ff 0f 00 00 	add    $0xfff,%r15
  17:	45 31 f6             	xor    %r14d,%r14d
  1a:	49 81 ff 00 10 00 00 	cmp    $0x1000,%r15
  21:	73 2c                	jae    0x4f
  23:	44 3b 35 a8 a4 38 0a 	cmp    0xa38a4a8(%rip),%r14d        # 0xa38a4d2
* 2a:	7e 07                	jle    0x33 <-- trapping instruction
  2c:	44 89 35 9f a4 38 0a 	mov    %r14d,0xa38a49f(%rip)        # 0xa38a4d2
  33:	80 3d f4 2c d2 0d 00 	cmpb   $0x0,0xdd22cf4(%rip)        # 0xdd22d2e
  3a:	0f 84 79 05 00 00    	je     0x5b9