audit: type=1804 audit(1546497985.691:388): pid=14325 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor1" name="/root/syzkaller-testdir152810720/syzkaller.JoLgwS/5249/memory.events" dev="sda1" ino=16722 res=1 ------------[ cut here ]------------ Cannot find parent device WARNING: CPU: 0 PID: 14326 at net/batman-adv/hard-interface.c:182 batadv_is_on_batman_iface+0x3e8/0x450 net/batman-adv/hard-interface.c:182 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 14326 Comm: syz-executor4 Not tainted 4.20.0+ #2 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1db/0x2d0 lib/dump_stack.c:113 panic+0x2cb/0x589 kernel/panic.c:189 kobject: 'loop3' (0000000089b5ed99): kobject_uevent_env kobject: 'loop3' (0000000089b5ed99): fill_kobj_path: path = '/devices/virtual/block/loop3' __warn.cold+0x20/0x4b kernel/panic.c:544 report_bug+0x263/0x2b0 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:178 [inline] fixup_bug arch/x86/kernel/traps.c:173 [inline] do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:271 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:290 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:973 RIP: 0010:batadv_is_on_batman_iface+0x3e8/0x450 net/batman-adv/hard-interface.c:182 Code: ff ff 4c 89 7d c8 e9 ff fe ff ff 48 8b 7d c0 e8 be aa f0 f9 e9 ff fc ff ff e8 e4 7c ad f9 48 c7 c7 a0 94 fa 88 e8 28 1d 77 f9 <0f> 0b eb bb e8 bf aa f0 f9 e9 45 fc ff ff 48 8b 7d c8 e8 b1 aa f0 RSP: 0018:ffff888089817590 EFLAGS: 00010282 audit: type=1800 audit(1546497985.891:389): pid=14332 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed comm="syz-executor1" name="memory.events" dev="sda1" ino=16722 res=0 RAX: 0000000000000000 RBX: ffff888088ac2e00 RCX: ffffc9000de61000 RDX: 000000000001847f RSI: ffffffff8167d4d6 RDI: 0000000000000006 RBP: ffff8880898175d8 R08: ffff8880a5d060c0 R09: ffff8880a5d06988 R10: ffff8880a5d060c0 R11: 0000000000000000 R12: 0000000000000000 R13: ffff88806ee70140 R14: 0000000000000055 R15: ffff88806ee70140 batadv_is_on_batman_iface+0x349/0x450 net/batman-adv/hard-interface.c:188 batadv_is_valid_iface net/batman-adv/hard-interface.c:205 [inline] batadv_hardif_add_interface net/batman-adv/hard-interface.c:917 [inline] batadv_hard_if_event+0x935/0x1240 net/batman-adv/hard-interface.c:1043 notifier_call_chain+0x179/0x380 kernel/notifier.c:93 __raw_notifier_call_chain kernel/notifier.c:394 [inline] raw_notifier_call_chain+0x2e/0x40 kernel/notifier.c:401 call_netdevice_notifiers_info+0x3f/0x90 net/core/dev.c:1739 call_netdevice_notifiers_extack net/core/dev.c:1751 [inline] call_netdevice_notifiers net/core/dev.c:1765 [inline] register_netdevice+0xae0/0x10b0 net/core/dev.c:8658 register_vlan_dev+0x2f9/0x7a0 net/8021q/vlan.c:172 register_vlan_device net/8021q/vlan.c:273 [inline] vlan_ioctl_handler+0xedf/0x135d net/8021q/vlan.c:617 sock_ioctl+0x3de/0x6c0 net/socket.c:1052 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:509 [inline] do_vfs_ioctl+0x107b/0x17d0 fs/ioctl.c:696 ksys_ioctl+0xab/0xd0 fs/ioctl.c:713 __do_sys_ioctl fs/ioctl.c:720 [inline] __se_sys_ioctl fs/ioctl.c:718 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:718 do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457ec9 Code: 6d b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 0f 83 3b b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f3f3a837c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457ec9 RDX: 0000000020000000 RSI: 0000000000008983 RDI: 0000000000000003 RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f3f3a8386d4 R13: 00000000004bf0f5 R14: 00000000004d0550 R15: 00000000ffffffff Kernel Offset: disabled Rebooting in 86400 seconds..