Hello, syzbot found the following issue on: HEAD commit: 57012c57536f Merge tag 'net-6.5-rc4' of git://git.kernel.o.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=1413a086a80000 kernel config: https://syzkaller.appspot.com/x/.config?x=5d10d93e1ae1f229 dashboard link: https://syzkaller.appspot.com/bug?extid=d6443e1f040e8d616e7b compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=137d82cea80000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/7336195c1d93/disk-57012c57.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/e7a6562e4033/vmlinux-57012c57.xz kernel image: https://storage.googleapis.com/syzbot-assets/7d66531ff83b/bzImage-57012c57.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/e6f09fca3191/mount_0.gz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+d6443e1f040e8d616e7b@xxxxxxxxxxxxxxxxxxxxxxxxx ------------[ cut here ]------------ kernel BUG at fs/btrfs/volumes.c:4642! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 5160 Comm: syz-executor.1 Not tainted 6.5.0-rc3-syzkaller-00123-g57012c57536f #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023 RIP: 0010:btrfs_cancel_balance+0x429/0x430 fs/btrfs/volumes.c:4641 Code: e8 1c 31 01 00 4c 89 ef 48 c7 c6 00 fd 4a 8b e8 ad 1a 24 07 e9 ef fe ff ff e8 a3 af 25 07 e8 3e 04 f5 fd 0f 0b e8 37 04 f5 fd <0f> 0b 0f 1f 44 00 00 f3 0f 1e fa 55 48 89 e5 41 57 41 56 41 55 41 RSP: 0018:ffffc90004b7fdc0 EFLAGS: 00010293 RAX: ffffffff839711d9 RBX: ffff888063844010 RCX: ffff888079498000 RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000001 RBP: ffffc90004b7fed0 R08: ffff8880638453d3 R09: 1ffff1100c708a7a R10: dffffc0000000000 R11: ffffed100c708a7b R12: 1ffff9200096ffc0 R13: ffff888063845468 R14: dffffc0000000000 R15: ffff888063845460 FS: 00007fab7440b6c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f1c1abfe000 CR3: 000000007aa05000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> btrfs_ioctl_balance_ctl+0x3f/0x70 fs/btrfs/ioctl.c:3632 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: 0033:0x7fab7367cb29 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:00007fab7440b0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fab7379c120 RCX: 00007fab7367cb29 RDX: 0000000000000002 RSI: 0000000040049421 RDI: 0000000000000006 RBP: 00007fab736c847a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000006e R14: 00007fab7379c120 R15: 00007ffcf21c7038 </TASK> Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:btrfs_cancel_balance+0x429/0x430 fs/btrfs/volumes.c:4641 Code: e8 1c 31 01 00 4c 89 ef 48 c7 c6 00 fd 4a 8b e8 ad 1a 24 07 e9 ef fe ff ff e8 a3 af 25 07 e8 3e 04 f5 fd 0f 0b e8 37 04 f5 fd <0f> 0b 0f 1f 44 00 00 f3 0f 1e fa 55 48 89 e5 41 57 41 56 41 55 41 RSP: 0018:ffffc90004b7fdc0 EFLAGS: 00010293 RAX: ffffffff839711d9 RBX: ffff888063844010 RCX: ffff888079498000 RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000001 RBP: ffffc90004b7fed0 R08: ffff8880638453d3 R09: 1ffff1100c708a7a R10: dffffc0000000000 R11: ffffed100c708a7b R12: 1ffff9200096ffc0 R13: ffff888063845468 R14: dffffc0000000000 R15: ffff888063845460 FS: 00007fab7440b6c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f1c22cd71e5 CR3: 000000007aa05000 CR4: 00000000003506f0 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 syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing. 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
