loop0: detected capacity change from 0 to 32768 BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 (7:0) scanned by syz.0.0 (5314) BTRFS info (device loop0): first mount of filesystem ed167579-eb65-4e76-9a50-61ac97e9b59d BTRFS info (device loop0): using sha256 (sha256-avx2) checksum algorithm BTRFS info (device loop0): using free-space-tree Zero length message leads to an empty skb BTRFS info (device loop0): balance: start -d -m BTRFS info (device loop0): relocating block group 6881280 flags data|metadata ------------[ cut here ]------------ BTRFS: Transaction aborted (error -28) WARNING: CPU: 0 PID: 5314 at fs/btrfs/volumes.c:3409 btrfs_remove_chunk+0x1877/0x1b20 fs/btrfs/volumes.c:3409 Modules linked in: CPU: 0 UID: 0 PID: 5314 Comm: syz.0.0 Not tainted 6.13.0-rc3-syzkaller-00073-geabcdba3ad40 #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_remove_chunk+0x1877/0x1b20 fs/btrfs/volumes.c:3409 Code: 4c 8c 44 89 e6 e8 a9 8b 99 fd 90 0f 0b 90 90 e9 ea fd ff ff e8 da e7 d8 fd 90 48 c7 c7 c0 30 4c 8c 44 89 e6 e8 8a 8b 99 fd 90 <0f> 0b 90 90 e9 f3 fd ff ff e8 bb e7 d8 fd 90 48 c7 c7 c0 30 4c 8c RSP: 0018:ffffc9000d4bf900 EFLAGS: 00010246 RAX: 1d5d21e35a796c00 RBX: ffff888053e30001 RCX: 0000000000100000 RDX: ffffc9000e502000 RSI: 0000000000025b31 RDI: 0000000000025b32 RBP: ffffc9000d4bfab0 R08: ffffffff81601a42 R09: 1ffff11003f8519a R10: dffffc0000000000 R11: ffffed1003f8519b R12: ffffffffffffffe4 R13: ffff8880001b7a00 R14: 0000000000000000 R15: dffffc0000000000 FS: 00007f151e98d6c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f1511c7a000 CR3: 000000003d332000 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:3539 __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: 0033:0x7f151db85d29 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:00007f151e98d038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f151dd75fa0 RCX: 00007f151db85d29 RDX: 0000000020000180 RSI: 00000000c4009420 RDI: 0000000000000005 RBP: 00007f151dc01aa8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f151dd75fa0 R15: 00007ffda6816688