BTRFS info (device loop0): first mount of filesystem e417788f-7a09-42b2-9266-8ddc5d5d35d2 BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm BTRFS info (device loop0): using free space tree BTRFS info (device loop0): enabling ssd optimizations BTRFS info (device loop0): balance: start -susage=34359738372,drange=7..526332,limit=0..6 ------------[ cut here ]------------ WARNING: CPU: 1 PID: 4435 at fs/btrfs/block-group.c:2539 btrfs_create_pending_block_groups+0xd53/0xf40 fs/btrfs/block-group.c:2539 Modules linked in: CPU: 1 PID: 4435 Comm: syz.0.17 Not tainted 6.1.148-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 RIP: 0010:btrfs_create_pending_block_groups+0xd53/0xf40 fs/btrfs/block-group.c:2539 Code: e0 8e d1 8a ba f2 09 00 00 44 89 e1 e8 e8 72 89 06 e9 42 f7 ff ff e8 cc 31 fd fd 48 c7 c7 60 8e d1 8a 44 89 e6 e8 3d 5e c9 fd <0f> 0b e9 43 fe ff ff e8 b1 31 fd fd 48 c7 c7 60 8e d1 8a 44 89 ee RSP: 0018:ffffc900035d7740 EFLAGS: 00010246 RAX: e4e1d6ed6480da00 RBX: 1ffff1100f70840b RCX: ffff88802c211dc0 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000002 RBP: ffffc900035d7988 R08: dffffc0000000000 R09: fffff520006bae79 R10: fffff520006bae79 R11: 1ffff920006bae78 R12: 00000000ffffffe4 R13: 0000000000000000 R14: ffff88807b842058 R15: ffff88807df18001 FS: 00005555745ed500(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005601093591e0 CR3: 000000001f367000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __btrfs_end_transaction+0x154/0x690 fs/btrfs/transaction.c:1012 btrfs_inc_block_group_ro+0x62b/0x700 fs/btrfs/block-group.c:2803 btrfs_relocate_block_group+0x450/0xd70 fs/btrfs/relocation.c:4052 btrfs_relocate_chunk+0x126/0x3b0 fs/btrfs/volumes.c:3350 __btrfs_balance+0x1894/0x21e0 fs/btrfs/volumes.c:4098 btrfs_balance+0xcad/0x11b0 fs/btrfs/volumes.c:4474 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: 0033:0x7f1c46f8ebe9 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:00007fff2c43a678 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f1c471b5fa0 RCX: 00007f1c46f8ebe9 RDX: 0000200000000440 RSI: 00000000c4009420 RDI: 0000000000000003 RBP: 00007f1c47011e19 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f1c471b5fa0 R14: 00007f1c471b5fa0 R15: 0000000000000003