R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
------------[ cut here ]------------
kernel BUG at fs/btrfs/extent-tree.c:3452!
Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI
CPU: 3 PID: 5300 Comm: syz-executor.2 Not tainted 6.10.0-rc3-syzkaller-00044-g2ccbdf43d5e7 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:btrfs_free_tree_block+0x930/0xc40 fs/btrfs/extent-tree.c:3452
Code: 06 fe b9 77 0d 00 00 48 c7 c2 c0 5b 76 8b 48 c7 c6 60 6f 76 8b 48 c7 c7 20 5f 76 8b e8 b9 d5 e6 fd 90 0f 0b e8 81 39 06 fe 90 <0f> 0b e8 79 39 06 fe 48 8d 7b 08 48 b8 00 00 00 00 00 fc ff df 48
RSP: 0018:ffffc90003577340 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff88805b744d20 RCX: ffffffff83885005
RDX: ffff88801f820000 RSI: ffffffff8388564f RDI: 0000000000000005
RBP: 1ffff920006aee6c R08: 0000000000000005 R09: 0000000000000000
R10: 00000000fffffff4 R11: 0000000000000007 R12: ffff88804b1aa128
R13: 0000000000000001 R14: 0000000000000001 R15: ffffc90003577390
FS:  0000000000000000(0000) GS:ffff88802c300000(0063) knlGS:00000000f5ef5b40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00000000edae4000 CR3: 000000005c2fa000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 btrfs_force_cow_block+0xfe7/0x19e0 fs/btrfs/ctree.c:623
 btrfs_cow_block+0x2b6/0xb70 fs/btrfs/ctree.c:746
 btrfs_search_slot+0x11bd/0x3010 fs/btrfs/ctree.c:2101
 btrfs_insert_empty_items+0xb6/0x1c0 fs/btrfs/ctree.c:4295
 btrfs_insert_empty_item fs/btrfs/ctree.h:650 [inline]
 insert_balance_item.isra.0+0x16d/0x14a0 fs/btrfs/volumes.c:3614
 btrfs_balance+0x1063/0x3f00 fs/btrfs/volumes.c:4512
 btrfs_ioctl_balance fs/btrfs/ioctl.c:3675 [inline]
 btrfs_ioctl+0x12ed/0x8290 fs/btrfs/ioctl.c:4742
 __do_compat_sys_ioctl+0x2c3/0x330 fs/ioctl.c:1007
 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline]
 __do_fast_syscall_32+0x73/0x120 arch/x86/entry/common.c:386
 do_fast_syscall_32+0x32/0x80 arch/x86/entry/common.c:411
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e
RIP: 0023:0xf7303579
Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00
RSP: 002b:00000000f5ef55ac EFLAGS: 00000292 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00000000c4009420
RDX: 0000000020000180 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:btrfs_free_tree_block+0x930/0xc40 fs/btrfs/extent-tree.c:3452
Code: 06 fe b9 77 0d 00 00 48 c7 c2 c0 5b 76 8b 48 c7 c6 60 6f 76 8b 48 c7 c7 20 5f 76 8b e8 b9 d5 e6 fd 90 0f 0b e8 81 39 06 fe 90 <0f> 0b e8 79 39 06 fe 48 8d 7b 08 48 b8 00 00 00 00 00 fc ff df 48
RSP: 0018:ffffc90003577340 EFLAGS: 00010293

RAX: 0000000000000000 RBX: ffff88805b744d20 RCX: ffffffff83885005
RDX: ffff88801f820000 RSI: ffffffff8388564f RDI: 0000000000000005
RBP: 1ffff920006aee6c R08: 0000000000000005 R09: 0000000000000000
R10: 00000000fffffff4 R11: 0000000000000007 R12: ffff88804b1aa128
R13: 0000000000000001 R14: 0000000000000001 R15: ffffc90003577390
FS:  0000000000000000(0000) GS:ffff88802c200000(0063) knlGS:00000000f5ef5b40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 000055fd129c0000 CR3: 000000005c2fa000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess), 2 bytes skipped:
   0:	10 06                	adc    %al,(%rsi)
   2:	03 74 b4 01          	add    0x1(%rsp,%rsi,4),%esi
   6:	10 07                	adc    %al,(%rdi)
   8:	03 74 b0 01          	add    0x1(%rax,%rsi,4),%esi
   c:	10 08                	adc    %cl,(%rax)
   e:	03 74 d8 01          	add    0x1(%rax,%rbx,8),%esi
  1e:	00 51 52             	add    %dl,0x52(%rcx)
  21:	55                   	push   %rbp
  22:	89 e5                	mov    %esp,%ebp
  24:	0f 34                	sysenter
  26:	cd 80                	int    $0x80
* 28:	5d                   	pop    %rbp <-- trapping instruction
  29:	5a                   	pop    %rdx
  2a:	59                   	pop    %rcx
  2b:	c3                   	ret
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	90                   	nop
  2f:	90                   	nop
  30:	8d b4 26 00 00 00 00 	lea    0x0(%rsi,%riz,1),%esi
  37:	8d b4 26 00 00 00 00 	lea    0x0(%rsi,%riz,1),%esi