BTRFS info (device loop3: state M): relocating block group 6881280 flags data|metadata ------------[ cut here ]------------ WARNING: CPU: 0 PID: 10464 at fs/btrfs/relocation.c:4123 btrfs_relocate_block_group+0xcda/0xd70 Modules linked in: CPU: 0 PID: 10464 Comm: syz-executor.3 Not tainted 6.4.0-rc2-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023 RIP: 0010:btrfs_relocate_block_group+0xcda/0xd70 fs/btrfs/relocation.c:4123 Code: fe 48 c7 c7 c0 2d 2b 8b 48 c7 c6 60 2d 2b 8b ba b1 0f 00 00 e8 47 c6 10 07 e8 72 e4 ee fd 0f 0b e9 62 fd ff ff e8 66 e4 ee fd <0f> 0b e9 b5 fd ff ff e8 5a e4 ee fd 0f 0b e9 08 fe ff ff 44 89 e1 RSP: 0018:ffffc9000d8f7a28 EFLAGS: 00010287 RAX: ffffffff839c983a RBX: 0000000000190000 RCX: 0000000000040000 RDX: ffffc90015800000 RSI: 000000000002593b RDI: 000000000002593c RBP: ffff88807b2d3068 R08: ffffffff839c95e8 R09: fffff52001b1ef35 R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8880361c3000 R13: 0000000000000000 R14: ffff888021f10000 R15: ffff888021f10010 FS: 00007f04953eb700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2db22000 CR3: 000000002363b000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: btrfs_relocate_chunk+0x12c/0x3b0 fs/btrfs/volumes.c:3276 __btrfs_balance+0x1b06/0x2690 fs/btrfs/volumes.c:4011 btrfs_balance+0xbdb/0x1120 fs/btrfs/volumes.c:4395 btrfs_ioctl_balance+0x493/0x7c0 fs/btrfs/ioctl.c:3599 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl+0xf1/0x160 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: 0033:0x7f049468c169 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:00007f04953eb168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f04947ac050 RCX: 00007f049468c169 RDX: 00000000200003c0 RSI: 00000000c4009420 RDI: 0000000000000006 RBP: 00007f04946e7ca1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe80fd018f R14: 00007f04953eb300 R15: 0000000000022000