BTRFS info (device loop2): relocating block group 1048576 flags system ------------[ cut here ]------------ WARNING: CPU: 0 PID: 4496 at fs/btrfs/volumes.c:3259 btrfs_remove_chunk+0x1344/0x1870 fs/btrfs/volumes.c:3259 Modules linked in: CPU: 0 PID: 4496 Comm: syz.2.37 Not tainted 6.1.141-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:btrfs_remove_chunk+0x1344/0x1870 fs/btrfs/volumes.c:3259 Code: 48 c7 c7 a0 27 b0 8a 44 89 f6 e8 07 d8 df fd 0f 0b e9 8f fe ff ff e8 4b c5 13 fe 48 c7 c7 a0 27 b0 8a 44 89 f6 e8 ec d7 df fd <0f> 0b e9 a9 fe ff ff e8 30 c5 13 fe 48 c7 c7 a0 27 b0 8a 44 89 f6 RSP: 0018:ffffc900049a7920 EFLAGS: 00010246 RAX: 1e56a6edce0a1600 RBX: 0000000000000000 RCX: 0000000000080000 RDX: ffffc900059fa000 RSI: 000000000002c93b RDI: 000000000002c93c RBP: ffffc900049a7ad0 R08: dffffc0000000000 R09: ffffed10171c4f34 R10: ffffed10171c4f34 R11: 1ffff110171c4f33 R12: ffff888054b6df18 R13: dffffc0000000000 R14: ffffffffffffffe4 R15: ffff88802f3d0001 FS: 00007fe9d62626c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f93cc7b66c0 CR3: 000000001eb51000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: btrfs_relocate_chunk+0x296/0x3b0 fs/btrfs/volumes.c:3389 __btrfs_balance+0x1894/0x21e0 fs/btrfs/volumes.c:4092 btrfs_balance+0xcad/0x11b0 fs/btrfs/volumes.c:4468 btrfs_ioctl_balance+0x49f/0x720 fs/btrfs/ioctl.c:4531 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl+0xfa/0x170 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7fe9d538e929 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fe9d6262038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fe9d55b5fa0 RCX: 00007fe9d538e929 RDX: 0000200000000780 RSI: 00000000c4009420 RDI: 0000000000000005 RBP: 00007fe9d5410b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fe9d55b5fa0 R15: 00007ffe0a82d698