BTRFS info (device loop5): using free space tree
BTRFS info (device loop5): has skinny extents
BTRFS critical (device loop5): unable to find logical 5263360 length 4096
BTRFS critical (device loop5): unable to find logical 5271552 length 4096
BTRFS critical (device loop5): unable to find logical 5271552 length 4096
BUG: unable to handle kernel NULL pointer dereference at 0000000000000138
PGD 0 P4D 0 
Oops: 0000 [#1] PREEMPT SMP
CPU: 1 PID: 30445 Comm: btrfs-ino-cache Not tainted 4.20.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
RIP: 0010:__lock_acquire.isra.11+0x305/0x650 kernel/locking/lockdep.c:3222
Code: c7 c7 a0 ce 21 83 e8 b3 1f 01 00 65 48 8b 3c 25 00 4f 01 00 e8 4d 10 00 00 e8 da 13 00 00 e8 28 cf 4c 01 45 31 e4 eb a8 89 f0 <48> 8b 44 c7 08 48 85 c0 0f 85 48 fd ff ff e9 22 fd ff ff 44 89 4d
RSP: 0018:ffffc9000100fbe0 EFLAGS: 00010097
RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000130
RBP: ffffc9000100fc10 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: ffff88813a7f0870 R12: 0000000000000000
R13: 0000000000000000 R14: ffff88813a7f0000 R15: 0000000000000130
FS:  0000000000000000(0000) GS:ffff88813bb00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000138 CR3: 000000012bd48000 CR4: 00000000003406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 lock_acquire+0xaf/0x150 kernel/locking/lockdep.c:3844
 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
 _raw_spin_lock+0x2d/0x40 kernel/locking/spinlock.c:144
 spin_lock include/linux/spinlock.h:329 [inline]
 btrfs_release_extent_buffer_pages+0xf2/0x2a0 fs/btrfs/extent_io.c:4655
 release_extent_buffer fs/btrfs/extent_io.c:5081 [inline]
 release_extent_buffer+0x42/0xc0 fs/btrfs/extent_io.c:5061
 free_extent_buffer fs/btrfs/extent_io.c:5127 [inline]
 free_extent_buffer+0x46/0x90 fs/btrfs/extent_io.c:5096
 btrfs_release_path+0x2c/0x80 fs/btrfs/ctree.c:82
 read_block_for_search.isra.12+0x1c7/0x360 fs/btrfs/ctree.c:2430
 btrfs_search_slot+0x529/0xa70 fs/btrfs/ctree.c:2838
 caching_kthread+0xce/0x330 fs/btrfs/inode-map.c:46
 kthread+0x119/0x130 kernel/kthread.c:246
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:352
Modules linked in:
CR2: 0000000000000138
---[ end trace f152c9d1e57c84dd ]---
RIP: 0010:__lock_acquire.isra.11+0x305/0x650 kernel/locking/lockdep.c:3222
Code: c7 c7 a0 ce 21 83 e8 b3 1f 01 00 65 48 8b 3c 25 00 4f 01 00 e8 4d 10 00 00 e8 da 13 00 00 e8 28 cf 4c 01 45 31 e4 eb a8 89 f0 <48> 8b 44 c7 08 48 85 c0 0f 85 48 fd ff ff e9 22 fd ff ff 44 89 4d
RSP: 0018:ffffc9000100fbe0 EFLAGS: 00010097
RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000130
RBP: ffffc9000100fc10 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: ffff88813a7f0870 R12: 0000000000000000
R13: 0000000000000000 R14: ffff88813a7f0000 R15: 0000000000000130
FS:  0000000000000000(0000) GS:ffff88813bb00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000138 CR3: 000000012bd48000 CR4: 00000000003406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	c7 c7 a0 ce 21 83    	mov    $0x8321cea0,%edi
   6:	e8 b3 1f 01 00       	call   0x11fbe
   b:	65 48 8b 3c 25 00 4f 	mov    %gs:0x14f00,%rdi
  12:	01 00
  14:	e8 4d 10 00 00       	call   0x1066
  19:	e8 da 13 00 00       	call   0x13f8
  1e:	e8 28 cf 4c 01       	call   0x14ccf4b
  23:	45 31 e4             	xor    %r12d,%r12d
  26:	eb a8                	jmp    0xffffffd0
  28:	89 f0                	mov    %esi,%eax
* 2a:	48 8b 44 c7 08       	mov    0x8(%rdi,%rax,8),%rax <-- trapping instruction
  2f:	48 85 c0             	test   %rax,%rax
  32:	0f 85 48 fd ff ff    	jne    0xfffffd80
  38:	e9 22 fd ff ff       	jmp    0xfffffd5f
  3d:	44                   	rex.R
  3e:	89                   	.byte 0x89
  3f:	4d                   	rex.WRB