------------[ cut here ]------------
VFS: brelse: Trying to free free buffer
WARNING: CPU: 1 PID: 3674 at fs/buffer.c:1148 __brelse fs/buffer.c:1148 [inline]
WARNING: CPU: 1 PID: 3674 at fs/buffer.c:1148 brelse include/linux/buffer_head.h:325 [inline]
WARNING: CPU: 1 PID: 3674 at fs/buffer.c:1148 __invalidate_bh_lrus fs/buffer.c:1394 [inline]
WARNING: CPU: 1 PID: 3674 at fs/buffer.c:1148 invalidate_bh_lru+0xf8/0x1a0 fs/buffer.c:1407
Modules linked in:
CPU: 1 PID: 3674 Comm: syz-executor.0 Not tainted 5.15.161-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
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 9c 69 e4 ff f0 ff 0b eb 21 e8 92 99 9a ff 41 80 3c 2e 00 75 26 eb 2c e8 84 99 9a ff 48 c7 c7 20 6c 97 8a e8 d8 41 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:ffffc90000dd0f60 EFLAGS: 00010046
RAX: 4a464c2315188800 RBX: ffff88805e074c28 RCX: ffff88807e578000
RDX: 0000000080010001 RSI: 0000000080010001 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff8166835c R09: ffffed1017364f24
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8880b9b36578
R13: 0000000000000000 R14: 1ffff11017366caf R15: ffff8880b9b36578
FS:  00007f1e3f6856c0(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2fa36000 CR3: 0000000074164000 CR4: 00000000003506e0
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
 sysvec_call_function_single+0x89/0xb0 arch/x86/kernel/smp.c:243
 </IRQ>
 <TASK>
 asm_sysvec_call_function_single+0x16/0x20 arch/x86/include/asm/idtentry.h:646
RIP: 0010:__mutex_lock_common+0x11e/0x25a0 kernel/locking/mutex.c:575
Code: 18 07 00 4c 8b 6c 24 08 75 2a 49 8d 7d 60 48 89 f8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00 74 05 e8 c2 74 a3 f7 <4d> 39 6d 60 0f 85 dc 18 00 00 48 83 7c 24 10 00 74 7d 49 8d 9d 90
RSP: 0018:ffffc9000117f5a0 EFLAGS: 00000246
RAX: 1ffff1100f632db2 RBX: dffffc0000000000 RCX: dffffc0000000000
RDX: ffff88807e578000 RSI: ffffffff8a8b3ca0 RDI: ffff88807b196d90
RBP: ffffc9000117f720 R08: dffffc0000000000 R09: ffffc9000117f660
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: ffff88807b196d30 R14: 0000000000000000 R15: 0000000000000000
 __mutex_lock kernel/locking/mutex.c:729 [inline]
 mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743
 __unix_dgram_recvmsg+0x24d/0x1260 net/unix/af_unix.c:2313
 ____sys_recvmsg+0x286/0x530
 ___sys_recvmsg+0x1ec/0x690 net/socket.c:2692
 do_recvmmsg+0x36f/0x8f0 net/socket.c:2786
 __sys_recvmmsg net/socket.c:2865 [inline]
 __do_sys_recvmmsg net/socket.c:2888 [inline]
 __se_sys_recvmmsg net/socket.c:2881 [inline]
 __x64_sys_recvmmsg+0x195/0x240 net/socket.c:2881
 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: 0033:0x7f1e40b2cf29
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f1e3f6850c8 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: ffffffffffffffda RBX: 00007f1e40c64050 RCX: 00007f1e40b2cf29
RDX: 0000000000010106 RSI: 00000000200000c0 RDI: 0000000000000005
RBP: 00007f1e40b9c074 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f1e40c64050 R15: 00007ffe3023b868
 </TASK>
----------------
Code disassembly (best guess):
   0:	18 07                	sbb    %al,(%rdi)
   2:	00 4c 8b 6c          	add    %cl,0x6c(%rbx,%rcx,4)
   6:	24 08                	and    $0x8,%al
   8:	75 2a                	jne    0x34
   a:	49 8d 7d 60          	lea    0x60(%r13),%rdi
   e:	48 89 f8             	mov    %rdi,%rax
  11:	48 c1 e8 03          	shr    $0x3,%rax
  15:	48 b9 00 00 00 00 00 	movabs $0xdffffc0000000000,%rcx
  1c:	fc ff df
  1f:	80 3c 08 00          	cmpb   $0x0,(%rax,%rcx,1)
  23:	74 05                	je     0x2a
  25:	e8 c2 74 a3 f7       	call   0xf7a374ec
* 2a:	4d 39 6d 60          	cmp    %r13,0x60(%r13) <-- trapping instruction
  2e:	0f 85 dc 18 00 00    	jne    0x1910
  34:	48 83 7c 24 10 00    	cmpq   $0x0,0x10(%rsp)
  3a:	74 7d                	je     0xb9
  3c:	49                   	rex.WB
  3d:	8d                   	.byte 0x8d
  3e:	9d                   	popf
  3f:	90                   	nop