IPVS: length: 124 != 24 IPVS: length: 124 != 24 serio: Serial port pts0 INFO: trying to register non-static key. the code is fine but needs lockdep annotation. turning off the locking correctness validator. CPU: 0 PID: 11567 Comm: syz-executor3 Not tainted 4.17.0-rc4+ #40 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+0x1b9/0x294 lib/dump_stack.c:113 assign_lock_key kernel/locking/lockdep.c:729 [inline] register_lock_class+0x1dd2/0x2630 kernel/locking/lockdep.c:755 __lock_acquire+0x1a7/0x5140 kernel/locking/lockdep.c:3319 serio: Serial port pts1 lock_acquire+0x1dc/0x520 kernel/locking/lockdep.c:3920 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:144 spin_lock include/linux/spinlock.h:310 [inline] ptr_ring_consume include/linux/ptr_ring.h:335 [inline] tun_ring_recv drivers/net/tun.c:2143 [inline] tun_do_read+0x18b1/0x29f0 drivers/net/tun.c:2182 tun_chr_read_iter+0xe5/0x1e0 drivers/net/tun.c:2214 call_read_iter include/linux/fs.h:1778 [inline] new_sync_read fs/read_write.c:406 [inline] __vfs_read+0x696/0xa50 fs/read_write.c:418 vfs_read+0x17f/0x3d0 fs/read_write.c:452 ksys_pread64+0x174/0x1a0 fs/read_write.c:626 __do_sys_pread64 fs/read_write.c:636 [inline] __se_sys_pread64 fs/read_write.c:633 [inline] __x64_sys_pread64+0x97/0xf0 fs/read_write.c:633 do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x455979 RSP: 002b:00007f20ed0b8c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000011 RAX: ffffffffffffffda RBX: 00007f20ed0b96d4 RCX: 0000000000455979 RDX: 0000000000000062 RSI: 0000000020000080 RDI: 0000000000000016 RBP: 000000000072bf50 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000000004bc R14: 00000000006fb240 R15: 0000000000000001 serio: Serial port pts0 audit: type=1326 audit(1525993966.873:3): auid=4294967295 uid=0 gid=0 ses=4294967295 pid=11702 comm="syz-executor5" exe="/root/syz-executor5" sig=9 arch=c000003e syscall=202 compat=0 ip=0x455979 code=0x0 serio: Serial port pts0 TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies. Check SNMP counters. FAT-fs (loop5): Unrecognized mount option " |[ :af(|_X\G8xk0~h@76` \ۄwiмX|v*M;L hV" or missing value serio: Serial port pts0 XFS (loop3): unknown mount option [norecov8݋Y y]. TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies. Check SNMP counters. IPVS: ftp: loaded support on port[0] = 21 XFS (loop3): unknown mount option [norecov8݋Y y]. IPVS: ftp: loaded support on port[0] = 21 serio: Serial port pts2 TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies. Check SNMP counters. XFS (loop3): unknown mount option [norecov8݋Y y]. TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies. Check SNMP counters. XFS (loop3): unknown mount option [norecov8݋Y y]. serio: Serial port pts0 serio: Serial port pts1 XFS (loop3): unknown mount option [norecov8݋Y y]. TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies. Check SNMP counters. XFS (loop3): unknown mount option [norecov8݋Y y]. TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies. Check SNMP counters. XFS (loop3): unknown mount option [norecov8݋Y y]. XFS (loop2): unknown mount option [norecov8݋Y y]. serio: Serial port pts1 serio: Serial port pts0 TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies. Check SNMP counters. serio: Serial port pts1 serio: Serial port pts0 serio: Serial port pts0 serio: Serial port pts1 serio: Serial port pts0 serio: Serial port pts1