INIT: Id "1" respawning too fast: disabled for 5 minutes INIT: Id "4" respawning too fast: disabled for 5 minutes INIT: Id "2" respawning too fast: disabled for 5 minutes INIT: Id "3" respawning too fast: disabled for 5 minutes INIT: Id "6" respawning too fast: disabled for 5 minutes Warning: Permanently added '10.128.0.44' (ECDSA) to the list of known hosts. 2018/07/30 17:44:17 parsed 1 programs 2018/07/30 17:44:20 executed programs: 0 [ 360.030936] IPVS: Creating netns size=2552 id=1 [ 360.254390] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 360.269350] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 360.345501] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 360.359575] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 360.433167] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 360.448475] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 360.463213] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 360.478345] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 361.140228] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 361.175641] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 361.674613] [ 361.676264] =============================== [ 361.680555] [ INFO: suspicious RCU usage. ] [ 361.684845] 4.4.141-g9664bde #11 Not tainted [ 361.689238] ------------------------------- [ 361.693527] kernel/rcu/tree_plugin.h:685 Illegal synchronize_rcu() in RCU read-side critical section! [ 361.702888] [ 361.702888] other info that might help us debug this: [ 361.702888] [ 361.711006] [ 361.711006] rcu_scheduler_active = 1, debug_locks = 0 [ 361.717653] 2 locks held by syz-executor0/4202: [ 361.722288] #0: (rcu_read_lock_bh){......}, at: [] ip6_finish_output2+0x1d5/0x1ca0 [ 361.732354] #1: (&n->lock){++--..}, at: [] __neigh_event_send+0x2f/0xc50 [ 361.741529] [ 361.741529] stack backtrace: [ 361.746021] CPU: 1 PID: 4202 Comm: syz-executor0 Not tainted 4.4.141-g9664bde #11 [ 361.753613] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 361.762968] 0000000000000000 b30595947bd15cf7 ffff8801d6ac7000 ffffffff81e0e18d [ 361.770940] ffff8800b91de000 0000000000000000 0000000000000001 ffffffff83a676c0 [ 361.778911] ffff8801d83c1558 ffff8801d6ac7030 ffffffff8140e407 ffff8801d83c1400 [ 361.786969] Call Trace: [ 361.789553] [] dump_stack+0xc1/0x124 [ 361.794900] [] lockdep_rcu_suspicious.cold.47+0x110/0x141 [ 361.802091] [] synchronize_rcu+0x78/0xa0 [ 361.807792] [] __l2tp_session_unhash+0x38a/0x520 [ 361.814168] [] ? __l2tp_session_unhash+0x1ac/0x520 [ 361.820718] [] ? l2tp_udp_encap_recv+0xa40/0xa40 [ 361.827092] [] l2tp_tunnel_closeall+0x1cb/0x350 [ 361.833378] [] l2tp_tunnel_destruct+0x2f2/0x590 [ 361.839664] [] ? l2tp_tunnel_destruct+0x1aa/0x590 [ 361.846126] [] ? l2tp_tunnel_del_work+0x460/0x460 [ 361.852591] [] ? __neigh_event_send+0x652/0xc50 [ 361.858899] [] sk_destruct+0x4c/0x4c0 [ 361.864319] [] __sk_free+0x4f/0x220 [ 361.869565] [] sock_wfree+0x103/0x140 [ 361.874984] [] ? sk_receive_skb+0x940/0x940 [ 361.880925] [] skb_release_head_state+0x103/0x210 [ 361.887387] [] skb_release_all+0x15/0x60 [ 361.893076] [] __kfree_skb+0x15/0x20 [ 361.898424] [] kfree_skb+0xf7/0x3e0 [ 361.903688] [] __neigh_event_send+0x652/0xc50 [ 361.909814] [] neigh_resolve_output+0x4eb/0x790 [ 361.916150] [] ? check_preemption_disabled+0x3b/0x170 [ 361.922974] [] ? rcu_lockdep_current_cpu_online+0xf2/0x140 [ 361.930225] [] ip6_finish_output2+0x929/0x1ca0 [ 361.936432] [] ? ip6_finish_output2+0x1d5/0x1ca0 [ 361.942807] [] ? ip6_sk_dst_lookup_flow+0x580/0x580 [ 361.949473] [] ? ip6_mtu+0x217/0x340 [ 361.954807] [] ip6_finish_output+0x3b8/0x760 [ 361.960841] [] ip6_output+0x1b8/0x520 [ 361.966264] [] ? ip6_finish_output+0x760/0x760 [ 361.972464] [] ? ip6_fragment+0x3510/0x3510 [ 361.978405] [] ? rt6_check_expired+0xa2/0x120 [ 361.984555] [] ip6_local_out+0x9b/0x180 [ 361.990150] [] ip6_send_skb+0xa1/0x340 [ 361.995672] [] ? csum_ipv6_magic+0x2b/0x90 [ 362.001538] [] udp_v6_send_skb+0x5ba/0xe70 [ 362.007400] [] udpv6_sendmsg+0x1f2e/0x24c0 [ 362.013282] [] ? ip_reply_glue_bits+0xc0/0xc0 [ 362.019398] [] ? udp6_lib_lookup2+0x990/0x990 [ 362.025543] [] ? debug_check_no_locks_freed+0x210/0x210 [ 362.032573] [] ? sock_has_perm+0x1c1/0x400 [ 362.038486] [] ? sock_has_perm+0x29f/0x400 [ 362.044347] [] ? sock_has_perm+0x9f/0x400 [ 362.050124] [] ? inet_sendmsg+0x143/0x4d0 [ 362.055893] [] inet_sendmsg+0x203/0x4d0 [ 362.061485] [] ? inet_sendmsg+0x73/0x4d0 [ 362.067167] [] ? inet_recvmsg+0x4c0/0x4c0 [ 362.072955] [] sock_sendmsg+0xcc/0x110 [ 362.078460] [] ___sys_sendmsg+0x441/0x880 [ 362.084245] [] ? hash_futex+0x15/0x210 [ 362.089752] [] ? copy_msghdr_from_user+0x550/0x550 [ 362.096300] [] ? get_futex_key+0xdc0/0xdc0 [ 362.102154] [] ? release_sock+0x3b6/0x500 [ 362.107937] [] ? do_futex+0x12d/0x17f0 [ 362.113444] [] ? pppol2tp_recv+0x320/0x320 [ 362.119298] [] ? debug_lockdep_rcu_enabled+0x77/0x90 [ 362.126031] [] ? __fget_light+0x9f/0x1f0 [ 362.131711] [] ? __fdget+0x18/0x20 [ 362.136872] [] ? sockfd_lookup_light+0xb6/0x160 [ 362.143158] [] __sys_sendmmsg+0x1d4/0x2e0 [ 362.148924] [] ? SyS_sendmsg+0x50/0x50 [ 362.154451] [] ? security_socket_connect+0x8f/0xc0 [ 362.160999] [] ? SYSC_connect+0x22a/0x300 [ 362.166764] [] ? SYSC_bind+0x280/0x280 [ 362.172273] [] ? compat_SyS_futex+0x1e1/0x2f0 [ 362.178396] [] ? compat_SyS_get_robust_list+0x310/0x310 [ 362.185409] [] compat_SyS_sendmmsg+0x32/0x40 [ 362.191436] [] ? compat_SyS_sendmsg+0x40/0x40 [ 362.197560] [] do_fast_syscall_32+0x326/0x8b0 [ 362.203685] [] sysenter_flags_fixed+0xd/0x17 [ 362.209744] BUG: sleeping function called from invalid context at kernel/sched/completion.c:90 [ 362.218472] in_atomic(): 1, irqs_disabled(): 0, pid: 4202, name: syz-executor0 [ 362.225801] INFO: lockdep is turned off. [ 362.229844] Preemption disabled at:[] ip6_finish_output+0x3b8/0x760 [ 362.237910] [ 362.239509] CPU: 1 PID: 4202 Comm: syz-executor0 Not tainted 4.4.141-g9664bde #11 [ 362.247095] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 362.256415] 0000000000000000 b30595947bd15cf7 ffff8801d6ac6d80 ffffffff81e0e18d [ 362.264381] ffff8800b91de000 0000000000000000 ffff8800b91de000 000000000000005a [ 362.272360] ffff8800b91de000 ffff8801d6ac6db8 ffffffff8140c525 ffff8800b91de000 [ 362.280343] Call Trace: [ 362.282901] [] dump_stack+0xc1/0x124 [ 362.288241] [] ___might_sleep.cold.116+0x1bd/0x1d3 [ 362.294847] [] __might_sleep+0x90/0x1a0 [ 362.300448] [] ? _raw_spin_unlock_irqrestore+0x45/0x70 [ 362.307346] [] wait_for_completion+0x89/0x2e0 [ 362.313468] [] ? check_preemption_disabled+0x3b/0x170 [ 362.320280] [] ? wait_for_completion_interruptible+0x460/0x460 [ 362.327879] [] ? trace_hardirqs_on+0xd/0x10 [ 362.333824] [] __wait_rcu_gp+0x137/0x1b0 [ 362.339506] [] synchronize_rcu.part.55+0x94/0xd0 [ 362.345886] [] ? synchronize_rcu_bh.part.54+0xd0/0xd0 [ 362.352706] [] ? __call_rcu.constprop.66+0x930/0x930 [ 362.359429] [] ? trace_raw_output_rcu_utilization+0x150/0x150 [ 362.366945] [] ? lockdep_rcu_suspicious.cold.47+0x110/0x141 [ 362.374277] [] synchronize_rcu+0x37/0xa0 [ 362.379960] [] __l2tp_session_unhash+0x38a/0x520 [ 362.386336] [] ? __l2tp_session_unhash+0x1ac/0x520 [ 362.392886] [] ? l2tp_udp_encap_recv+0xa40/0xa40 [ 362.399266] [] l2tp_tunnel_closeall+0x1cb/0x350 [ 362.405554] [] l2tp_tunnel_destruct+0x2f2/0x590 [ 362.411842] [] ? l2tp_tunnel_destruct+0x1aa/0x590 [ 362.418308] [] ? l2tp_tunnel_del_work+0x460/0x460 [ 362.424772] [] ? __neigh_event_send+0x652/0xc50 [ 362.431060] [] sk_destruct+0x4c/0x4c0 [ 362.436481] [] __sk_free+0x4f/0x220 [ 362.441729] [] sock_wfree+0x103/0x140 [ 362.447158] [] ? sk_receive_skb+0x940/0x940 [ 362.453098] [] skb_release_head_state+0x103/0x210 [ 362.459560] [] skb_release_all+0x15/0x60 [ 362.465240] [] __kfree_skb+0x15/0x20 [ 362.470573] [] kfree_skb+0xf7/0x3e0 [ 362.475821] [] __neigh_event_send+0x652/0xc50 [ 362.481942] [] neigh_resolve_output+0x4eb/0x790 [ 362.488235] [] ? check_preemption_disabled+0x3b/0x170 [ 362.495047] [] ? rcu_lockdep_current_cpu_online+0xf2/0x140 [ 362.502292] [] ip6_finish_output2+0x929/0x1ca0 [ 362.508497] [] ? ip6_finish_output2+0x1d5/0x1ca0 [ 362.514873] [] ? ip6_sk_dst_lookup_flow+0x580/0x580 [ 362.521512] [] ? ip6_mtu+0x217/0x340 [ 362.526848] [] ip6_finish_output+0x3b8/0x760 [ 362.532883] [] ip6_output+0x1b8/0x520 [ 362.538310] [] ? ip6_finish_output+0x760/0x760 [ 362.544513] [] ? ip6_fragment+0x3510/0x3510 [ 362.550458] [] ? rt6_check_expired+0xa2/0x120 [ 362.556574] [] ip6_local_out+0x9b/0x180 [ 362.562168] [] ip6_send_skb+0xa1/0x340 [ 362.567677] [] ? csum_ipv6_magic+0x2b/0x90 [ 362.573533] [] udp_v6_send_skb+0x5ba/0xe70 [ 362.579389] [] udpv6_sendmsg+0x1f2e/0x24c0 [ 362.585243] [] ? ip_reply_glue_bits+0xc0/0xc0 [ 362.591361] [] ? udp6_lib_lookup2+0x990/0x990 [ 362.597478] [] ? debug_check_no_locks_freed+0x210/0x210 [ 362.604460] [] ? sock_has_perm+0x1c1/0x400 [ 362.610316] [] ? sock_has_perm+0x29f/0x400 [ 362.616171] [] ? sock_has_perm+0x9f/0x400 [ 362.621940] [] ? inet_sendmsg+0x143/0x4d0 [ 362.627712] [] inet_sendmsg+0x203/0x4d0 [ 362.633317] [] ? inet_sendmsg+0x73/0x4d0 [ 362.639016] [] ? inet_recvmsg+0x4c0/0x4c0 [ 362.644793] [] sock_sendmsg+0xcc/0x110 [ 362.650300] [] ___sys_sendmsg+0x441/0x880 [ 362.656068] [] ? hash_futex+0x15/0x210 [ 362.661575] [] ? copy_msghdr_from_user+0x550/0x550 [ 362.668124] [] ? get_futex_key+0xdc0/0xdc0 [ 362.673987] [] ? release_sock+0x3b6/0x500 [ 362.679755] [] ? do_futex+0x12d/0x17f0 [ 362.685266] [] ? pppol2tp_recv+0x320/0x320 [ 362.691121] [] ? debug_lockdep_rcu_enabled+0x77/0x90 [ 362.697855] [] ? __fget_light+0x9f/0x1f0 [ 362.703543] [] ? __fdget+0x18/0x20 [ 362.708706] [] ? sockfd_lookup_light+0xb6/0x160 [ 362.714992] [] __sys_sendmmsg+0x1d4/0x2e0 [ 362.720761] [] ? SyS_sendmsg+0x50/0x50 [ 362.726272] [] ? security_socket_connect+0x8f/0xc0 [ 362.732825] [] ? SYSC_connect+0x22a/0x300 [ 362.738596] [] ? SYSC_bind+0x280/0x280 [ 362.744104] [] ? compat_SyS_futex+0x1e1/0x2f0 [ 362.750218] [] ? compat_SyS_get_robust_list+0x310/0x310 [ 362.757204] [] compat_SyS_sendmmsg+0x32/0x40 [ 362.763233] [] ? compat_SyS_sendmsg+0x40/0x40 [ 362.769350] [] do_fast_syscall_32+0x326/0x8b0 [ 362.775466] [] sysenter_flags_fixed+0xd/0x17 [ 362.782786] BUG: scheduling while atomic: syz-executor0/4202/0x00000402 [ 362.789546] INFO: lockdep is turned off. [ 362.793576] Modules linked in: [ 362.796881] Preemption disabled at:[] ip6_finish_output+0x3b8/0x760 [ 362.804945] [ 362.806564] CPU: 1 PID: 4202 Comm: syz-executor0 Not tainted 4.4.141-g9664bde #11 [ 362.814163] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 362.823486] 0000000000000000 b30595947bd15cf7 ffff8801d6ac6bd8 ffffffff81e0e18d [ 362.831477] ffff8800b91de000 0000000000000402 000000000001f4c0 0000000000000000 [ 362.839455] 0000000000000001 ffff8801d6ac6bf8 ffffffff8140c619 ffff8801db31f4c0 [ 362.847433] Call Trace: [ 362.849991] [] dump_stack+0xc1/0x124 [ 362.855326] [] __schedule_bug.cold.117+0xde/0x100 [ 362.861789] [] __schedule+0x11ff/0x1d70 [ 362.867392] [] ? dump_trace+0x184/0x360 [ 362.872990] [] schedule+0x7a/0x1b0 [ 362.878154] [] schedule_timeout+0x481/0x8b0 [ 362.884097] [] ? usleep_range+0x140/0x140 [ 362.889872] [] ? dump_stack+0xfb/0x124 [ 362.895384] [] ? wait_for_completion+0x91/0x2e0 [ 362.901676] [] ? ___might_sleep.cold.116+0x1bd/0x1d3 [ 362.908401] [] ? wait_for_completion+0x1f6/0x2e0 [ 362.914780] [] wait_for_completion+0x1fe/0x2e0 [ 362.920982] [] ? wait_for_completion_interruptible+0x460/0x460 [ 362.928575] [] ? wake_up_process+0x20/0x20 [ 362.934429] [] __wait_rcu_gp+0x137/0x1b0 [ 362.940113] [] synchronize_rcu.part.55+0x94/0xd0 [ 362.946488] [] ? synchronize_rcu_bh.part.54+0xd0/0xd0 [ 362.953298] [] ? __call_rcu.constprop.66+0x930/0x930 [ 362.960022] [] ? trace_raw_output_rcu_utilization+0x150/0x150 [ 362.967531] [] ? lockdep_rcu_suspicious.cold.47+0x110/0x141 [ 362.974869] [] synchronize_rcu+0x37/0xa0 [ 362.980552] [] __l2tp_session_unhash+0x38a/0x520 [ 362.986930] [] ? __l2tp_session_unhash+0x1ac/0x520 [ 362.993478] [] ? l2tp_udp_encap_recv+0xa40/0xa40 [ 362.999855] [] l2tp_tunnel_closeall+0x1cb/0x350 [ 363.006160] [] l2tp_tunnel_destruct+0x2f2/0x590 [ 363.012457] [] ? l2tp_tunnel_destruct+0x1aa/0x590 [ 363.018918] [] ? l2tp_tunnel_del_work+0x460/0x460 [ 363.025382] [] ? __neigh_event_send+0x652/0xc50 [ 363.031669] [] sk_destruct+0x4c/0x4c0 [ 363.037096] [] __sk_free+0x4f/0x220 [ 363.042342] [] sock_wfree+0x103/0x140 [ 363.047762] [] ? sk_receive_skb+0x940/0x940 [ 363.053703] [] skb_release_head_state+0x103/0x210 [ 363.060164] [] skb_release_all+0x15/0x60 [ 363.065848] [] __kfree_skb+0x15/0x20 [ 363.071184] [] kfree_skb+0xf7/0x3e0 [ 363.076431] [] __neigh_event_send+0x652/0xc50 [ 363.082545] [] neigh_resolve_output+0x4eb/0x790 [ 363.088839] [] ? check_preemption_disabled+0x3b/0x170 [ 363.095656] [] ? rcu_lockdep_current_cpu_online+0xf2/0x140 [ 363.102905] [] ip6_finish_output2+0x929/0x1ca0 [ 363.109105] [] ? ip6_finish_output2+0x1d5/0x1ca0 [ 363.115480] [] ? ip6_sk_dst_lookup_flow+0x580/0x580 [ 363.122116] [] ? ip6_mtu+0x217/0x340 [ 363.127449] [] ip6_finish_output+0x3b8/0x760 [ 363.133477] [] ip6_output+0x1b8/0x520 [ 363.138899] [] ? ip6_finish_output+0x760/0x760 [ 363.145114] [] ? ip6_fragment+0x3510/0x3510 [ 363.151068] [] ? rt6_check_expired+0xa2/0x120 [ 363.157192] [] ip6_local_out+0x9b/0x180 [ 363.162791] [] ip6_send_skb+0xa1/0x340 [ 363.168300] [] ? csum_ipv6_magic+0x2b/0x90 [ 363.174153] [] udp_v6_send_skb+0x5ba/0xe70 [ 363.180008] [] udpv6_sendmsg+0x1f2e/0x24c0 [ 363.185863] [] ? ip_reply_glue_bits+0xc0/0xc0 [ 363.191985] [] ? udp6_lib_lookup2+0x990/0x990 [ 363.198122] [] ? debug_check_no_locks_freed+0x210/0x210 [ 363.205107] [] ? sock_has_perm+0x1c1/0x400 [ 363.210968] [] ? sock_has_perm+0x29f/0x400 [ 363.216843] [] ? sock_has_perm+0x9f/0x400 [ 363.222613] [] ? inet_sendmsg+0x143/0x4d0 [ 363.228382] [] inet_sendmsg+0x203/0x4d0 [ 363.233975] [] ? inet_sendmsg+0x73/0x4d0 [ 363.239656] [] ? inet_recvmsg+0x4c0/0x4c0 [ 363.245429] [] sock_sendmsg+0xcc/0x110 [ 363.250943] [] ___sys_sendmsg+0x441/0x880 [ 363.256712] [] ? hash_futex+0x15/0x210 [ 363.262221] [] ? copy_msghdr_from_user+0x550/0x550 [ 363.268770] [] ? get_futex_key+0xdc0/0xdc0 [ 363.274622] [] ? release_sock+0x3b6/0x500 [ 363.280393] [] ? do_futex+0x12d/0x17f0 [ 363.285905] [] ? pppol2tp_recv+0x320/0x320 [ 363.291766] [] ? debug_lockdep_rcu_enabled+0x77/0x90 [ 363.298496] [] ? __fget_light+0x9f/0x1f0 [ 363.304176] [] ? __fdget+0x18/0x20 [ 363.309345] [] ? sockfd_lookup_light+0xb6/0x160 [ 363.315636] [] __sys_sendmmsg+0x1d4/0x2e0 [ 363.321406] [] ? SyS_sendmsg+0x50/0x50 [ 363.326915] [] ? security_socket_connect+0x8f/0xc0 [ 363.333464] [] ? SYSC_connect+0x22a/0x300 [ 363.339233] [] ? SYSC_bind+0x280/0x280 [ 363.344744] [] ? compat_SyS_futex+0x1e1/0x2f0 [ 363.350864] [] ? compat_SyS_get_robust_list+0x310/0x310 [ 363.357848] [] compat_SyS_sendmmsg+0x32/0x40 [ 363.363884] [] ? compat_SyS_sendmsg+0x40/0x40 [ 363.369998] [] do_fast_syscall_32+0x326/0x8b0 [ 363.376117] [] sysenter_flags_fixed+0xd/0x17 [ 363.382253] NOHZ: local_softirq_pending 282