Hello, syzbot found the following issue on: HEAD commit: e6fda526d9db Merge tag 'arm64-fixes' of git://git.kernel.o.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=13056635a80000 kernel config: https://syzkaller.appspot.com/x/.config?x=1e3d5175079af5a4 dashboard link: https://syzkaller.appspot.com/bug?extid=c128866d4c63fd09a097 compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/97a696eca453/disk-e6fda526.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/d4053dfcc8c4/vmlinux-e6fda526.xz kernel image: https://storage.googleapis.com/syzbot-assets/5e22f1544aca/bzImage-e6fda526.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+c128866d4c63fd09a097@xxxxxxxxxxxxxxxxxxxxxxxxx btrfs_ioctl_balance+0x496/0x7c0 fs/btrfs/ioctl.c:3604 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl+0xf8/0x170 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd ------------[ cut here ]------------ kernel BUG at fs/btrfs/extent-tree.c:1125! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 21577 Comm: syz-executor.3 Not tainted 6.5.0-rc4-syzkaller-00211-ge6fda526d9db #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023 RIP: 0010:update_inline_extent_backref+0x530/0x5d0 fs/btrfs/extent-tree.c:1125 Code: a7 5d fe e9 9e fc ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 11 ff ff ff 48 89 df e8 6a a7 5d fe e9 04 ff ff ff e8 30 da 04 fe <0f> 0b e8 29 da 04 fe 4c 89 e7 e8 71 80 00 00 4c 89 e3 49 8d 7c 24 RSP: 0018:ffffc9000bee6fc8 EFLAGS: 00010246 RAX: ffffffff8386cd50 RBX: 0000000000000002 RCX: 0000000000040000 RDX: ffffc900113d3000 RSI: 000000000003ffff RDI: 0000000000040000 RBP: 00000000000000b2 R08: ffffffff8386cb53 R09: ffffffff8386ca4a R10: 0000000000000004 R11: ffff88803763bb80 R12: 00000000fffffffe R13: 0000000000000001 R14: ffff88801e544000 R15: 0000000000000f3e FS: 00007ffb6820e6c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f8f6ded71e5 CR3: 000000003561e000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> remove_extent_backref fs/btrfs/extent-tree.c:1193 [inline] __btrfs_free_extent+0x1329/0x3250 fs/btrfs/extent-tree.c:3116 run_delayed_data_ref fs/btrfs/extent-tree.c:1532 [inline] run_one_delayed_ref fs/btrfs/extent-tree.c:1706 [inline] btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:1948 [inline] __btrfs_run_delayed_refs+0x108d/0x3f90 fs/btrfs/extent-tree.c:2009 btrfs_run_delayed_refs+0x140/0x480 fs/btrfs/extent-tree.c:2121 btrfs_commit_transaction+0x495/0x2ff0 fs/btrfs/transaction.c:2163 relocate_block_group+0xb7d/0xcd0 fs/btrfs/relocation.c:3763 btrfs_relocate_block_group+0x7ab/0xd70 fs/btrfs/relocation.c:4087 btrfs_relocate_chunk+0x12c/0x3b0 fs/btrfs/volumes.c:3283 __btrfs_balance+0x1b06/0x2690 fs/btrfs/volumes.c:4018 btrfs_balance+0xbd8/0x10d0 fs/btrfs/volumes.c:4395 btrfs_ioctl_balance+0x496/0x7c0 fs/btrfs/ioctl.c:3604 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl+0xf8/0x170 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7ffb6747cae9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffb6820e0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007ffb6759c1f0 RCX: 00007ffb6747cae9 RDX: 00000000200003c0 RSI: 00000000c4009420 RDI: 0000000000000009 RBP: 00007ffb674c847a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000006e R14: 00007ffb6759c1f0 R15: 00007ffeafbe6508 </TASK> Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:update_inline_extent_backref+0x530/0x5d0 fs/btrfs/extent-tree.c:1125 Code: a7 5d fe e9 9e fc ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 11 ff ff ff 48 89 df e8 6a a7 5d fe e9 04 ff ff ff e8 30 da 04 fe <0f> 0b e8 29 da 04 fe 4c 89 e7 e8 71 80 00 00 4c 89 e3 49 8d 7c 24 RSP: 0018:ffffc9000bee6fc8 EFLAGS: 00010246 RAX: ffffffff8386cd50 RBX: 0000000000000002 RCX: 0000000000040000 RDX: ffffc900113d3000 RSI: 000000000003ffff RDI: 0000000000040000 RBP: 00000000000000b2 R08: ffffffff8386cb53 R09: ffffffff8386ca4a R10: 0000000000000004 R11: ffff88803763bb80 R12: 00000000fffffffe R13: 0000000000000001 R14: ffff88801e544000 R15: 0000000000000f3e FS: 00007ffb6820e6c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f8f6ded71e5 CR3: 000000003561e000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the bug is already fixed, let syzbot know by replying with: #syz fix: exact-commit-title If you want to change bug's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the bug is a duplicate of another bug, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup
