------------[ cut here ]------------
VFS: brelse: Trying to free free buffer
WARNING: CPU: 1 PID: 4696 at fs/buffer.c:1144 __brelse fs/buffer.c:1144 [inline]
WARNING: CPU: 1 PID: 4696 at fs/buffer.c:1144 __brelse+0x67/0xa0 fs/buffer.c:1138
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 4696 Comm: systemd-udevd Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
 panic+0x26a/0x50e kernel/panic.c:186
 __warn.cold+0x20/0x5a kernel/panic.c:541
 report_bug+0x262/0x2b0 lib/bug.c:183
 fixup_bug arch/x86/kernel/traps.c:178 [inline]
 fixup_bug arch/x86/kernel/traps.c:173 [inline]
 do_error_trap+0x1d7/0x310 arch/x86/kernel/traps.c:296
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:1038
RIP: 0010:__brelse fs/buffer.c:1144 [inline]
RIP: 0010:__brelse+0x67/0xa0 fs/buffer.c:1138
Code: 7c 04 84 d2 75 4e 44 8b 63 60 31 ff 44 89 e6 e8 bf 16 b2 ff 45 85 e4 75 1c e8 45 15 b2 ff 48 c7 c7 e0 1c 75 88 e8 1e 4d 42 06 <0f> 0b 5b 5d 41 5c e9 2e 15 b2 ff e8 29 15 b2 ff be 04 00 00 00 48
RSP: 0018:ffff8880ba107f40 EFLAGS: 00010082
RAX: 0000000000000000 RBX: ffff88803dee7000 RCX: 0000000000000000
RDX: 0000000000010000 RSI: ffffffff814dff01 RDI: ffffed1017420fda
RBP: ffff88803dee7060 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000005 R11: ffffffff8c66505b R12: 0000000000000000
R13: dffffc0000000000 R14: ffff8880ba1287e0 R15: 0000000000000000
 brelse include/linux/buffer_head.h:297 [inline]
 invalidate_bh_lru+0x90/0x140 fs/buffer.c:1385
 flush_smp_call_function_queue+0x144/0x4d0 kernel/smp.c:243
 smp_call_function_single_interrupt+0x98/0x440 arch/x86/kernel/smp.c:304
 call_function_single_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:916
 </IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:789 [inline]
RIP: 0010:qlink_free mm/kasan/quarantine.c:150 [inline]
RIP: 0010:qlist_free_all+0xfc/0x140 mm/kasan/quarantine.c:166
Code: 50 08 48 8d 4a ff 83 e2 01 48 0f 45 c1 4c 8b 70 18 e9 40 ff ff ff e8 a3 36 cf ff 48 83 3d e3 0f 59 08 00 74 38 4c 89 ff 57 9d <0f> 1f 44 00 00 4d 85 e4 75 9e 49 c7 45 08 00 00 00 00 49 c7 45 00
RSP: 0018:ffff88809c757b50 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff04
RAX: 0000000000000007 RBX: ffff8880b2debd80 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffff88809c74af08 RDI: 0000000000000286
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880b496ff00
R13: ffff88809c757b88 R14: ffff88813bff01c0 R15: 0000000000000286
 quarantine_reduce+0x1a9/0x230 mm/kasan/quarantine.c:259
 kasan_kmalloc+0xa2/0x160 mm/kasan/kasan.c:538
 slab_post_alloc_hook mm/slab.h:445 [inline]
 slab_alloc mm/slab.c:3397 [inline]
 kmem_cache_alloc+0x110/0x370 mm/slab.c:3557
 prepare_creds+0x39/0x510 kernel/cred.c:255
 do_faccessat+0x94/0x7a0 fs/open.c:359
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7fae04a419c7
Code: 83 c4 08 48 3d 01 f0 ff ff 73 01 c3 48 8b 0d c8 d4 2b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 b8 15 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d a1 d4 2b 00 f7 d8 64 89 01 48
RSP: 002b:00007ffdf0ac4738 EFLAGS: 00000246 ORIG_RAX: 0000000000000015
RAX: ffffffffffffffda RBX: 000055b0f521a2d0 RCX: 00007fae04a419c7
RDX: 00746e657665752f RSI: 0000000000000000 RDI: 00007ffdf0ac4740
RBP: 00007ffdf0ac47b0 R08: 0000000000004460 R09: 0000000000001010
R10: 00007fae04cffb58 R11: 0000000000000246 R12: 000055b0f3c33856
R13: 000055b0f5204d00 R14: 00007ffdf0ac4740 R15: 000055b0f5204a90
Kernel Offset: disabled
Rebooting in 86400 seconds..
----------------
Code disassembly (best guess):
   0:	50                   	push   %rax
   1:	08 48 8d             	or     %cl,-0x73(%rax)
   4:	4a ff 83 e2 01 48 0f 	rex.WX incq 0xf4801e2(%rbx)
   b:	45 c1 4c 8b 70 18    	rex.RB rorl $0x18,0x70(%r11,%rcx,4)
  11:	e9 40 ff ff ff       	jmpq   0xffffff56
  16:	e8 a3 36 cf ff       	callq  0xffcf36be
  1b:	48 83 3d e3 0f 59 08 	cmpq   $0x0,0x8590fe3(%rip)        # 0x8591006
  22:	00
  23:	74 38                	je     0x5d
  25:	4c 89 ff             	mov    %r15,%rdi
  28:	57                   	push   %rdi
  29:	9d                   	popfq
* 2a:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1) <-- trapping instruction
  2f:	4d 85 e4             	test   %r12,%r12
  32:	75 9e                	jne    0xffffffd2
  34:	49 c7 45 08 00 00 00 	movq   $0x0,0x8(%r13)
  3b:	00
  3c:	49                   	rex.WB
  3d:	c7                   	.byte 0xc7
  3e:	45                   	rex.RB