BTRFS info (device loop0): relocating block group 5242880 flags data|metadata BTRFS warning (device loop0): Skipping commit of aborted transaction. ------------[ cut here ]------------ BTRFS: Transaction aborted (error -28) WARNING: fs/btrfs/transaction.c:2036 at 0x0, CPU#1: syz.0.17/6100 Modules linked in: CPU: 1 UID: 0 PID: 6100 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT_{RT,(full)} Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 RIP: 0010:cleanup_transaction fs/btrfs/transaction.c:2036 [inline] RIP: 0010:btrfs_commit_transaction+0x30ff/0x3b10 fs/btrfs/transaction.c:2629 Code: 27 36 f9 fd eb 7d e8 e0 0e df fd 84 c0 74 25 e8 17 36 f9 fd eb 6d e8 10 36 f9 fd 48 8d 3d 39 3c 1c 0b 44 8b 6c 24 38 44 89 ee <67> 48 0f b9 3a e9 24 f9 ff ff e8 c2 fb 0b 07 89 c3 31 ff 89 c6 e8 RSP: 0018:ffffc90004347500 EFLAGS: 00010293 RAX: ffffffff83c73c30 RBX: ffff88802ff4c001 RCX: ffff88801dfe3c80 RDX: 0000000000000000 RSI: 00000000ffffffe4 RDI: ffffffff8ee37870 RBP: ffffc90004347828 R08: ffff88801dfe3c80 R09: 0000000000000003 R10: 0000000000000100 R11: 00000000fffffffb R12: 1ffff110082e200a R13: 00000000ffffffe4 R14: 0000000000000000 R15: ffff88802ff4c000 FS: 00007f234869e6c0(0000) GS:ffff888126e06000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f98c0155d30 CR3: 0000000031c92000 CR4: 00000000003526f0 Call Trace: prepare_to_relocate+0x3a1/0x490 fs/btrfs/relocation.c:3479 relocate_block_group+0x132/0xd70 fs/btrfs/relocation.c:3504 btrfs_relocate_block_group+0x580/0xba0 fs/btrfs/relocation.c:3966 btrfs_relocate_chunk+0x12f/0x5d0 fs/btrfs/volumes.c:3424 __btrfs_balance+0x190e/0x24f0 fs/btrfs/volumes.c:4197 btrfs_balance+0xac2/0x11b0 fs/btrfs/volumes.c:4571 btrfs_ioctl_balance+0x3d6/0x610 fs/btrfs/ioctl.c:3525 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:597 [inline] __se_sys_ioctl+0xff/0x170 fs/ioctl.c:583 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f234902f749 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:00007f234869e038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f2349285fa0 RCX: 00007f234902f749 RDX: 0000200000000180 RSI: 00000000c4009420 RDI: 0000000000000004 RBP: 00007f23490b3f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f2349286038 R14: 00007f2349285fa0 R15: 00007ffee0dd1158 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: 36 f9 ss stc 2: fd std 3: eb 7d jmp 0x82 5: e8 e0 0e df fd call 0xfddf0eea a: 84 c0 test %al,%al c: 74 25 je 0x33 e: e8 17 36 f9 fd call 0xfdf9362a 13: eb 6d jmp 0x82 15: e8 10 36 f9 fd call 0xfdf9362a 1a: 48 8d 3d 39 3c 1c 0b lea 0xb1c3c39(%rip),%rdi # 0xb1c3c5a 21: 44 8b 6c 24 38 mov 0x38(%rsp),%r13d 26: 44 89 ee mov %r13d,%esi * 29: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction 2e: e9 24 f9 ff ff jmp 0xfffff957 33: e8 c2 fb 0b 07 call 0x70bfbfa 38: 89 c3 mov %eax,%ebx 3a: 31 ff xor %edi,%edi 3c: 89 c6 mov %eax,%esi 3e: e8 .byte 0xe8