BTRFS info (device loop0): relocating block group 6881280 flags data|metadata 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:2045 at cleanup_transaction+0x7e6/0x9c0 fs/btrfs/transaction.c:2045, CPU#0: syz.0.36/6496 Modules linked in: CPU: 0 UID: 0 PID: 6496 Comm: syz.0.36 Not tainted syzkaller #0 PREEMPT_{RT,(full)} Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 RIP: 0010:cleanup_transaction+0x7e9/0x9c0 fs/btrfs/transaction.c:2045 Code: 0a e8 9b 11 e4 fd e9 82 00 00 00 e8 21 19 c9 fd 84 c0 74 2a e8 88 11 e4 fd eb 72 e8 81 11 e4 fd 48 8d 3d 0a 90 92 0b 44 89 fe <67> 48 0f b9 3a 4c 8b 6c 24 18 4c 8b 64 24 20 e9 a7 f9 ff ff e8 5e RSP: 0018:ffffc900055ef3a0 EFLAGS: 00010293 RAX: ffffffff83e0428f RBX: ffff88803829e000 RCX: ffff888026d01e40 RDX: 0000000000000000 RSI: 00000000ffffffe4 RDI: ffffffff8f72d2a0 RBP: ffffc900055ef4d0 R08: ffff888026d01e40 R09: 0000000000000003 R10: 0000000000000100 R11: 00000000fffffffb R12: 1ffff11008b31f09 R13: ffff88804598f848 R14: 0000000000000000 R15: 00000000ffffffe4 FS: 00007f6d3bdde6c0(0000) GS:ffff888126342000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f3848916b60 CR3: 0000000020f86000 CR4: 00000000003526f0 Call Trace: btrfs_commit_transaction+0x25aa/0x31a0 fs/btrfs/transaction.c:2630 prepare_to_relocate+0x3a1/0x490 fs/btrfs/relocation.c:3479 relocate_block_group+0x149/0xe90 fs/btrfs/relocation.c:3504 do_nonremap_reloc+0xa7/0x5b0 fs/btrfs/relocation.c:5248 btrfs_relocate_block_group+0x5fe/0x980 fs/btrfs/relocation.c:5407 btrfs_relocate_chunk+0x10f/0x820 fs/btrfs/volumes.c:3590 __btrfs_balance+0x1aec/0x26e0 fs/btrfs/volumes.c:4486 btrfs_balance+0xafa/0x11f0 fs/btrfs/volumes.c:4873 btrfs_ioctl_balance+0x3d6/0x610 fs/btrfs/ioctl.c:3446 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+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f6d3c77c629 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f6d3bdde028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f6d3c9f5fa0 RCX: 00007f6d3c77c629 RDX: 0000200000000180 RSI: 00000000c4009420 RDI: 0000000000000004 RBP: 00007f6d3c812b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f6d3c9f6038 R14: 00007f6d3c9f5fa0 R15: 00007ffc3e7767e8 ---------------- Code disassembly (best guess): 0: 0a e8 or %al,%ch 2: 9b fwait 3: 11 e4 adc %esp,%esp 5: fd std 6: e9 82 00 00 00 jmp 0x8d b: e8 21 19 c9 fd call 0xfdc91931 10: 84 c0 test %al,%al 12: 74 2a je 0x3e 14: e8 88 11 e4 fd call 0xfde411a1 19: eb 72 jmp 0x8d 1b: e8 81 11 e4 fd call 0xfde411a1 20: 48 8d 3d 0a 90 92 0b lea 0xb92900a(%rip),%rdi # 0xb929031 27: 44 89 fe mov %r15d,%esi * 2a: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction 2f: 4c 8b 6c 24 18 mov 0x18(%rsp),%r13 34: 4c 8b 64 24 20 mov 0x20(%rsp),%r12 39: e9 a7 f9 ff ff jmp 0xfffff9e5 3e: e8 .byte 0xe8 3f: 5e pop %rsi