Warning: Permanently added '10.128.15.209' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program syzkaller login: [ 29.361042] netlink: 12 bytes leftover after parsing attributes in process `syz-executor826'. [ 29.363453] netlink: 12 bytes leftover after parsing attributes in process `syz-executor826'. [ 29.374338] netlink: 12 bytes leftover after parsing attributes in process `syz-executor826'. [ 29.380592] netlink: 12 bytes leftover after parsing attributes in process `syz-executor826'. [ 29.389330] netlink: 12 bytes leftover after parsing attributes in process `syz-executor826'. [ 29.397317] ip_tables: iptables: counters copy to user failed while replacing table [ 29.406546] netlink: 12 bytes leftover after parsing attributes in process `syz-executor826'. [ 29.414102] ip_tables: iptables: counters copy to user failed while replacing table [ 29.429021] netlink: 12 bytes leftover after parsing attributes in process `syz-executor826'. [ 29.429410] ip_tables: iptables: counters copy to user failed while replacing table [ 29.440037] netlink: 12 bytes leftover after parsing attributes in process `syz-executor826'. [ 29.445920] ip_tables: iptables: counters copy to user failed while replacing table [ 29.456401] netlink: 12 bytes leftover after parsing attributes in process `syz-executor826'. [ 29.462435] ip_tables: iptables: counters copy to user failed while replacing table [ 29.474159] netlink: 12 bytes leftover after parsing attributes in process `syz-executor826'. [ 29.479066] ip_tables: iptables: counters copy to user failed while replacing table [ 29.495762] ip_tables: iptables: counters copy to user failed while replacing table [ 29.504850] ip_tables: iptables: counters copy to user failed while replacing table [ 29.513803] ip_tables: iptables: counters copy to user failed while replacing table [ 29.522788] ip_tables: iptables: counters copy to user failed while replacing table [ 29.589062] [ 29.590852] ============================= [ 29.594992] WARNING: suspicious RCU usage [ 29.599466] 4.14.246-syzkaller #0 Not tainted [ 29.603955] ----------------------------- [ 29.608096] net/netfilter/nf_queue.c:227 suspicious rcu_dereference_check() usage! [ 29.615842] [ 29.615842] other info that might help us debug this: [ 29.615842] [ 29.624062] [ 29.624062] rcu_scheduler_active = 2, debug_locks = 1 [ 29.630767] 2 locks held by syz-executor826/8068: [ 29.635606] #0: (rcu_callback){....}, at: [] rcu_process_callbacks+0x84e/0x1180 [ 29.645118] #1: (&(&inst->lock)->rlock){+.-.}, at: [] nfqnl_flush+0x2f/0x2a0 [ 29.654099] [ 29.654099] stack backtrace: [ 29.658625] CPU: 0 PID: 8068 Comm: syz-executor826 Not tainted 4.14.246-syzkaller #0 [ 29.666500] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 29.675850] Call Trace: [ 29.678430] [ 29.680580] dump_stack+0x1b2/0x281 [ 29.684211] nf_reinject+0x56e/0x700 [ 29.687926] nfqnl_flush+0x1ab/0x2a0 [ 29.691644] instance_destroy_rcu+0x19/0x30 [ 29.695961] ? nfqnl_rcv_nl_event+0x290/0x290 [ 29.700455] rcu_process_callbacks+0x780/0x1180 [ 29.705128] ? note_gp_changes+0x2f0/0x2f0 [ 29.709369] ? sched_clock+0x2a/0x40 [ 29.713086] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 29.718536] __do_softirq+0x24d/0x9ff [ 29.722334] ? check_preemption_disabled+0x35/0x240 [ 29.727354] irq_exit+0x193/0x240 [ 29.730807] smp_apic_timer_interrupt+0x141/0x5e0 [ 29.735652] apic_timer_interrupt+0x93/0xa0 [ 29.739964] [ 29.742201] RIP: 0010:kmem_cache_alloc+0x2db/0x3c0 [ 29.747221] RSP: 0018:ffff888096a4fdd0 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff10 [ 29.754927] RAX: 0000000000000007 RBX: 00000000014000c0 RCX: 0000000000000000 [ 29.762189] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000282 [ 29.769449] RBP: ffff88823f8bb200 R08: ffffffff8b9ccea0 R09: 0000000000000000 [ 29.776821] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880b2eda440 [ 29.784087] R13: 00000000014000c0 R14: ffff88823f8bb200 R15: 0000000000000282 [ 29.791372] getname_flags+0xc8/0x550 [ 29.795183] do_sys_open+0x1ce/0x410 [ 29.798904] ? filp_open+0x60/0x60 [ 29.802442] ? __do_page_fault+0x159/0xad0 [ 29.806677] ? do_syscall_64+0x4c/0x640 [ 29.810645] ? SyS_open+0x30/0x30 [ 29.814096] do_syscall_64+0x1d5/0x640 [ 29.817987] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 29.823173] RIP: 0033:0x7ff078ad7177 [ 29.826876] RSP: 002b:00007ffef34c0da0 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 [ 29.834665] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007ff078ad7177 [ 29.841935] RDX: 0000000000080001 RSI: 00007ff078b6c022 RDI: 00000000ffffff9c [ 29.849202] RBP: 00007ff078b6c022 R08: 0000000000000000 R09: 00007ffef34c0d90 [ 29.856478] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000080001 [ 29.863745] R13: 0000000000000000 R14: 00007ffef34c1390 R15: 00007ff078ad14d0 [ 34.365522] nla_parse: 3493 callbacks suppressed [ 34.365527] netlink: 12 bytes leftover after parsing attributes in process `syz-executor826'. [ 34.368893] netlink: 12 bytes leftover after parsing attributes in process `syz-executor826'. [ 34.371102] netlink: 12 bytes leftover after parsing attributes in process `syz-executor826'. [ 34.382414] netlink: 12 bytes leftover after parsing attributes in process `syz-executor826'. [ 34.390588] netlink: 12 bytes leftover after parsing attributes in process `syz-executor826'. [ 34.398120] net_ratelimit: 3496 callbacks suppressed [ 34.398162] ip_tables: iptables: counters copy to user failed while replacing table [ 34.406764] netlink: 12 bytes leftover after parsing attributes in process `syz-executor826'. [ 34.416484] ip_tables: iptables: counters copy to user failed while replacing table [ 34.436793] netlink: 12 bytes leftover after parsing attributes in process `syz-executor826'. [ 34.445653] ip_tables: iptables: counters copy to user failed while replacing table [ 34.455729] netlink: 12 bytes leftover after parsing attributes in process `syz-executor826'. [ 34.461591] ip_tables: iptables: counters copy to user failed while replacing table [ 34.473804] netlink: 12 bytes leftover after parsing attributes in process `syz-executor826'. [ 34.478176] ip_tables: iptables: counters copy to user failed while replacing table [ 34.494908] ip_tables: iptables: counters copy to user failed while replacing table [ 34.503140] netlink: 12 bytes leftover after parsing attributes in process `syz-executor826'. [ 34.503349] ip_tables: iptables: counters copy to user failed while replacing table [ 34.519844] ip_tables: iptables: counters copy to user failed while replacing table [ 34.529406] ip_tables: iptables: counters copy to user failed while replacing table [ 34.538308] ip_tables: iptables: counters copy to user failed while replacing table [ 39.375421] nla_parse: 3625 callbacks suppressed [ 39.375436] netlink: 12 bytes leftover after parsing attributes in process `syz-executor826'. [ 39.375839] netlink: 12 bytes leftover after parsing attributes in process `syz-executor826'. [ 39.382225] netlink: 12 bytes leftover after parsing attributes in process `syz-executor826'. [ 39.392825] netlink: 12 bytes leftover after parsing attributes in process `syz-executor826'. [ 39.399559] netlink: 12 bytes leftover after parsing attributes in process `syz-executor826'. [ 39.408013] net_ratelimit: 3629 callbacks suppressed [ 39.408016] ip_tables: iptables: counters copy to user failed while replacing table [ 39.423849] netlink: 12 bytes leftover after parsing attributes in process `syz-executor826'. [ 39.425120] ip_tables: iptables: counters copy to user failed while replacing table [ 39.440742] netlink: 12 bytes leftover after parsing attributes in process `syz-executor826'. [ 39.446169] ip_tables: iptables: counters copy to user failed while replacing table [ 39.470384] ip_tables: iptables: counters copy to user failed while replacing table [ 39.478373] netlink: 12 bytes leftover after parsing attributes in process `syz-executor826'. [ 39.479943] ip_tables: iptables: counters copy to user failed while replacing table [ 39.496038] netlink: 12 bytes leftover after parsing attributes in process `syz-executor826'. [ 39.496369] netlink: 12 bytes leftover after parsing attributes in process `syz-executor826'. [ 39.514223] ip_tables: iptables: counters copy to user failed while replacing table [ 39.522180] ip_tables: iptables: counters copy to user failed while replacing table [ 39.530868] ip_tables: iptables: counters copy to user failed while replacing table [ 39.539906] ip_tables: iptables: counters copy to user failed while replacing table [ 39.548316] ip_tables: iptables: counters copy to user failed while replacing table