loop0: detected capacity change from 0 to 32768 btrfs: Deprecated parameter 'usebackuproot' BTRFS warning: 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 (7:0) scanned by syz.0.0 (5324) BTRFS info (device loop0): first mount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf BTRFS info (device loop0): using crc32c (crc32c-x86_64) checksum algorithm BTRFS info (device loop0): using free-space-tree BTRFS info (device loop0): rebuilding free space tree BTRFS info (device loop0): balance: start -s BTRFS info (device loop0): relocating block group 1048576 flags system ------------[ cut here ]------------ BTRFS: Transaction aborted (error -28) WARNING: CPU: 0 PID: 5324 at fs/btrfs/volumes.c:3346 btrfs_remove_chunk+0x15e8/0x1970 fs/btrfs/volumes.c:3346 Modules linked in: CPU: 0 UID: 0 PID: 5324 Comm: syz.0.0 Not tainted 6.16.0-rc1-syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 RIP: 0010:btrfs_remove_chunk+0x15e8/0x1970 fs/btrfs/volumes.c:3346 Code: 24 18 48 8b 38 48 c7 c6 80 3a ce 8b 89 da e8 4f 74 5a fd eb 19 e8 c8 b9 f0 fd 90 48 c7 c7 20 3a ce 8b 89 de e8 c9 64 b4 fd 90 <0f> 0b 90 90 49 bd 00 00 00 00 00 fc ff df e9 96 fa ff ff e8 a0 b9 RSP: 0018:ffffc9000e6978c0 EFLAGS: 00010246 RAX: 104edda750f33700 RBX: ffffffffffffffe4 RCX: 0000000000100000 RDX: ffffc9000dd9a000 RSI: 00000000000258a0 RDI: 00000000000258a1 RBP: ffffc9000e697ab0 R08: ffff88801fc24293 R09: 1ffff11003f84852 R10: dffffc0000000000 R11: ffffed1003f84853 R12: 1ffff11008506b27 R13: dffffc0000000000 R14: 0000000000000000 R15: ffff888052db0001 FS: 00007fd99142e6c0(0000) GS:ffff88808d252000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fdefffe9000 CR3: 00000000358cb000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: btrfs_relocate_chunk+0x292/0x3b0 fs/btrfs/volumes.c:3476 __btrfs_balance+0x1870/0x21d0 fs/btrfs/volumes.c:4206 btrfs_balance+0xc94/0x11d0 fs/btrfs/volumes.c:4583 btrfs_ioctl_balance+0x3d3/0x610 fs/btrfs/ioctl.c:3583 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:907 [inline] __se_sys_ioctl+0xf9/0x170 fs/ioctl.c:893 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fd99058e929 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:00007fd99142e038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fd9907b5fa0 RCX: 00007fd99058e929 RDX: 0000200000000200 RSI: 00000000c4009420 RDI: 0000000000000004 RBP: 00007fd990610b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fd9907b5fa0 R15: 00007fff286986a8