loop0: detected capacity change from 0 to 262144
=======================================================
WARNING: The mand mount option has been deprecated and
         and is ignored by this kernel. Remove the mand
         option from the mount to silence this warning.
=======================================================
BTRFS: device fsid 7e32c2af-f87a-45a1-bcba-64dea7c56a53 devid 1 transid 8 /dev/loop0 (7:0) scanned by syz.0.0 (5314)
BTRFS info (device loop0): first mount of filesystem 7e32c2af-f87a-45a1-bcba-64dea7c56a53
BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
BTRFS info (device loop0): using free-space-tree
BTRFS info (device loop0): balance: start -d -musage=0,drange=0..0,vrange=732116414424416288..2729141778883018752 -ssoft,devid=0,vrange=11327252057824442525..9677252790462069913,limit=10612180086841080869
BTRFS info (device loop0): relocating block group 63963136 flags data
------------[ cut here ]------------
WARNING: CPU: 0 PID: 5314 at fs/btrfs/relocation.c:4124 btrfs_relocate_block_group+0xcdb/0xd90 fs/btrfs/relocation.c:4124
Modules linked in:
CPU: 0 UID: 0 PID: 5314 Comm: syz.0.0 Not tainted 6.13.0-rc5-syzkaller #0
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_relocate_block_group+0xcdb/0xd90 fs/btrfs/relocation.c:4124
Code: e5 ce fd e9 77 fe ff ff e8 a2 e5 ce fd 90 0f 0b 90 e9 8c fd ff ff e8 94 e5 ce fd 90 0f 0b 90 e9 de fd ff ff e8 86 e5 ce fd 90 <0f> 0b 90 e9 30 fe ff ff 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c d2
RSP: 0018:ffffc9000d66fa10 EFLAGS: 00010293
RAX: ffffffff83d08e5a RBX: 0000000000004000 RCX: ffff888000ad4880
RDX: 0000000000000000 RSI: 0000000000004000 RDI: 0000000000000000
RBP: ffff888040e11070 R08: ffffffff83d08c85 R09: 1ffff92001acdf30
R10: dffffc0000000000 R11: fffff52001acdf31 R12: 1ffff11002468a00
R13: 0000000000000000 R14: ffff88804313c000 R15: ffff88804313c010
FS:  00007f382e3876c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffc7fac3f58 CR3: 00000000122a6000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 btrfs_relocate_chunk+0x12c/0x3b0 fs/btrfs/volumes.c:3494
 __btrfs_balance+0x1b0f/0x26b0 fs/btrfs/volumes.c:4278
 btrfs_balance+0xbdc/0x10c0 fs/btrfs/volumes.c:4655
 btrfs_ioctl_balance+0x493/0x7c0 fs/btrfs/ioctl.c:3670
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:906 [inline]
 __se_sys_ioctl+0xf5/0x170 fs/ioctl.c:892
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f382d585d29
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:00007f382e387038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f382d776080 RCX: 00007f382d585d29
RDX: 0000000020000180 RSI: 00000000c4009420 RDI: 000000000000000b
RBP: 00007f382d601b08 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f382d776080 R15: 00007ffc7fac4bc8
 </TASK>