------------[ cut here ]------------
VFS: brelse: Trying to free free buffer
WARNING: CPU: 0 PID: 29136 at fs/buffer.c:1144 __brelse fs/buffer.c:1144 [inline]
WARNING: CPU: 0 PID: 29136 at fs/buffer.c:1144 __brelse+0x67/0xa0 fs/buffer.c:1138
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 29136 Comm: syz-executor.0 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: ffff88803052bd20 RCX: 0000000000000000
RDX: 0000000000010000 RSI: ffffffff814dff01 RDI: ffffed1017400fda
RBP: ffff88803052bd80 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: 0033:0x7fab10ba41d7
Code: 39 d1 73 14 0f 1f 80 00 00 00 00 48 8b 50 f8 48 83 e8 08 48 39 ca 77 f3 48 39 c3 73 3e 48 89 13 48 8b 50 f8 48 89 38 49 8b 0e <48> 8b 3e 48 83 c3 08 48 83 c6 08 eb bc 48 39 d1 72 9e 48 39 d0 73
RSP: 002b:00007ffdfb81ffb0 EFLAGS: 00000283 ORIG_RAX: ffffffffffffff04
RAX: 00007fab10374818 RBX: 00007fab10373418 RCX: ffffffff83771e31
RDX: ffffffff83771e2c RSI: 00007fab10373420 RDI: ffffffff83771e2c
RBP: 00007fab10370ea0 R08: 00007fab10375878 R09: 00000000ee5a3a10
R10: 00007ffdfb820230 R11: 0000000000000246 R12: 00007fab10370e98
R13: 00007fab10373418 R14: 00007fab10370e90 R15: 0000000000000016
Kernel Offset: disabled
Rebooting in 86400 seconds..