------------[ cut here ]------------
kernel BUG at fs/btrfs/relocation.c:1919!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 8405 Comm: syz-executor.5 Not tainted 6.4.0-syzkaller-12365-g8689f4f2ea56 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/03/2023
RIP: 0010:prepare_to_merge+0xbb2/0xc40 fs/btrfs/relocation.c:1919
Code: fe e9 f5 f7 ff ff e8 bd 8a eb fd 48 c7 c7 20 71 4b 8b 48 c7 c6 c0 80 4b 8b 48 c7 c2 a0 71 4b 8b b9 7f 07 00 00 e8 3e 89 19 07 <0f> 0b e8 97 c9 1b 07 f3 0f 1e fa e8 8e 8a eb fd 43 80 3c 2f 00 74
RSP: 0018:ffffc90009347760 EFLAGS: 00010246
RAX: 000000000000004f RBX: ffff88807ad3e030 RCX: ba0d280af9d15400
RDX: ffffc9000ad52000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: ffffc90009347870 R08: ffffffff816f581c R09: 1ffff92001268ea0
R10: dffffc0000000000 R11: fffff52001268ea1 R12: ffff88807ad3e000
R13: ffff888029994000 R14: ffff888029994560 R15: ffff888029994558
FS:  00007f6b165c7700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555556a8d848 CR3: 000000001f643000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 relocate_block_group+0xa5d/0xcd0 fs/btrfs/relocation.c:3749
 btrfs_relocate_block_group+0x7ab/0xd70 fs/btrfs/relocation.c:4087
 btrfs_relocate_chunk+0x12c/0x3b0 fs/btrfs/volumes.c:3283
 __btrfs_balance+0x1b06/0x2690 fs/btrfs/volumes.c:4018
 btrfs_balance+0xbdb/0x1120 fs/btrfs/volumes.c:4402
 btrfs_ioctl_balance+0x496/0x7c0 fs/btrfs/ioctl.c:3604
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:870 [inline]
 __se_sys_ioctl+0xf8/0x170 fs/ioctl.c:856
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f6b1588c389
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f6b165c7168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f6b159abf80 RCX: 00007f6b1588c389
RDX: 00000000200003c0 RSI: 00000000c4009420 RDI: 0000000000000004
RBP: 00007f6b158d7493 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe8fabed1f R14: 00007f6b165c7300 R15: 0000000000022000
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:prepare_to_merge+0xbb2/0xc40 fs/btrfs/relocation.c:1919
Code: fe e9 f5 f7 ff ff e8 bd 8a eb fd 48 c7 c7 20 71 4b 8b 48 c7 c6 c0 80 4b 8b 48 c7 c2 a0 71 4b 8b b9 7f 07 00 00 e8 3e 89 19 07 <0f> 0b e8 97 c9 1b 07 f3 0f 1e fa e8 8e 8a eb fd 43 80 3c 2f 00 74
RSP: 0018:ffffc90009347760 EFLAGS: 00010246
RAX: 000000000000004f RBX: ffff88807ad3e030 RCX: ba0d280af9d15400
RDX: ffffc9000ad52000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: ffffc90009347870 R08: ffffffff816f581c R09: 1ffff92001268ea0
R10: dffffc0000000000 R11: fffff52001268ea1 R12: ffff88807ad3e000
R13: ffff888029994000 R14: ffff888029994560 R15: ffff888029994558
FS:  00007f6b165c7700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2d425000 CR3: 000000001f643000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400