------------[ cut here ]------------
VFS: brelse: Trying to free free buffer
WARNING: CPU: 0 PID: 8776 at fs/buffer.c:1144 __brelse fs/buffer.c:1144 [inline]
WARNING: CPU: 0 PID: 8776 at fs/buffer.c:1144 __brelse+0x67/0xa0 fs/buffer.c:1138
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 8776 Comm: syz-executor.1 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: 0000:ffff8880ba007f40 EFLAGS: 00010082
RAX: 0000000000000000 RBX: ffff88808ccbbb28 RCX: 0000000000000000
RDX: 0000000000010000 RSI: ffffffff814dff01 RDI: ffffed1017400fda
RBP: ffff88808ccbbb88 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000005 R11: ffffffff8c66501b R12: 0000000000000000
R13: dffffc0000000000 R14: ffff8880ba0287e0 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: 0033:0x7fde0453919c
Code: 01 c2 49 3b 55 08 77 56 8d 55 ff 85 ed 74 35 0f 1f 80 00 00 00 00 48 39 c1 77 1c 49 8b 75 00 49 89 c1 49 29 c9 46 0f b6 0c 0e <45> 84 c9 74 08 44 88 0c 06 49 8b 45 10 48 83 c0 01 49 89 45 10 83
RSP: 002b:00007fde02aec600 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff04
RAX: 0000000000afeb63 RBX: 00007fde02aec660 RCX: 0000000000000001
RDX: 000000000000003a RSI: 00007fddfa6cd000 RDI: 00007fde02aec700
RBP: 0000000000000102 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: 00007fde02aec670 R12: 00007fde02aec670
R13: 00007fde02aec700 R14: 0000000000000001 R15: 0000000000000000
Kernel Offset: disabled
Rebooting in 86400 seconds..