batman_adv: batadv0: Interface deactivated: batadv_slave_1 batman_adv: batadv0: Removing interface: batadv_slave_1 IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready ------------[ cut here ]------------ WARNING: CPU: 1 PID: 14756 at fs/btrfs/volumes.c:936 __btrfs_close_devices+0x888/0xb20 fs/btrfs/volumes.c:936 Kernel panic - not syncing: panic_on_warn set ... IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready CPU: 1 PID: 14756 Comm: syz-executor.0 Not tainted 4.14.230-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 panic+0x1f9/0x42d kernel/panic.c:183 __warn.cold+0x20/0x44 kernel/panic.c:547 report_bug+0x208/0x250 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:177 [inline] fixup_bug arch/x86/kernel/traps.c:172 [inline] do_error_trap+0x195/0x2d0 arch/x86/kernel/traps.c:295 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:964 RIP: 0010:__btrfs_close_devices+0x888/0xb20 fs/btrfs/volumes.c:936 RSP: 0018:ffff8881be8cf618 EFLAGS: 00010246 RAX: 0000000000040000 RBX: dffffc0000000000 RCX: ffffc90005ae5000 RDX: 0000000000040000 RSI: ffffffff82a6c3a8 RDI: ffff888094972a60 RBP: ffff8880968f8900 R08: 0000000000000286 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: dead000000000200 R13: dead000000000100 R14: ffff88808e439000 R15: ffff8880968f89a0 btrfs_close_devices+0x24/0x140 fs/btrfs/volumes.c:949 open_ctree+0x241/0x7400 fs/btrfs/disk-io.c:3101 btrfs_fill_super fs/btrfs/super.c:1147 [inline] btrfs_mount+0x1915/0x1fe0 fs/btrfs/super.c:1631 mount_fs+0x92/0x2a0 fs/super.c:1237 vfs_kern_mount.part.0+0x5b/0x470 fs/namespace.c:1046 vfs_kern_mount+0x3c/0x60 fs/namespace.c:1036 mount_subvol fs/btrfs/super.c:1398 [inline] btrfs_mount+0x42a/0x1fe0 fs/btrfs/super.c:1569 mount_fs+0x92/0x2a0 fs/super.c:1237 vfs_kern_mount.part.0+0x5b/0x470 fs/namespace.c:1046 vfs_kern_mount fs/namespace.c:1036 [inline] do_new_mount fs/namespace.c:2549 [inline] do_mount+0xe53/0x2a00 fs/namespace.c:2879 SYSC_mount fs/namespace.c:3095 [inline] SyS_mount+0xa8/0x120 fs/namespace.c:3072 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x46797a RSP: 002b:00007f82449cdfa8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 000000000046797a RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f82449ce000 RBP: 00007f82449ce040 R08: 00007f82449ce040 R09: 0000000020000000 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000020000000 R13: 0000000020000100 R14: 00007f82449ce000 R15: 00000000200005c0 Kernel Offset: disabled Rebooting in 86400 seconds..