[info] Using makefile-style concurrent boot in runlevel 2. [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [ 8.944343] sshd (2903) used greatest stack depth: 14512 bytes left [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added 'ci-upstream-next-kasan-gce-0,10.128.0.35' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 62.691517] ------------[ cut here ]------------ [ 62.692330] WARNING: CPU: 1 PID: 2994 at ./include/net/sock.h:1507 strp_data_ready+0x2b7/0x390 [ 62.693584] Kernel panic - not syncing: panic_on_warn set ... [ 62.693584] [ 62.694590] CPU: 1 PID: 2994 Comm: syzkaller037807 Not tainted 4.14.0-rc5-next-20171018+ #36 [ 62.695710] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 62.696930] Call Trace: [ 62.697284] [ 62.697586] dump_stack+0x194/0x257 [ 62.698079] ? arch_local_irq_restore+0x53/0x53 [ 62.698740] ? vsnprintf+0x1ed/0x1900 [ 62.699257] panic+0x1e4/0x41c [ 62.699711] ? refcount_error_report+0x214/0x214 [ 62.700355] ? show_regs_print_info+0x65/0x65 [ 62.700962] ? __warn+0x1a9/0x1e0 [ 62.701431] ? strp_data_ready+0x2b7/0x390 [ 62.702031] __warn+0x1c4/0x1e0 [ 62.702475] ? strp_data_ready+0x2b7/0x390 [ 62.703050] report_bug+0x211/0x2d0 [ 62.703544] fixup_bug+0x40/0x90 [ 62.704016] do_trap+0x260/0x390 [ 62.704478] do_error_trap+0x120/0x390 [ 62.705006] ? do_trap+0x390/0x390 [ 62.705485] ? strp_data_ready+0x2b7/0x390 [ 62.706054] ? tcp_rcv_state_process+0x335/0x4850 [ 62.706717] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 62.707368] do_invalid_op+0x1b/0x20 [ 62.707902] invalid_op+0x18/0x20 [ 62.708398] RIP: 0010:strp_data_ready+0x2b7/0x390 [ 62.709055] RSP: 0018:ffff8801db306b18 EFLAGS: 00010206 [ 62.709786] RAX: ffff8801d1d14780 RBX: ffff8801d23f0c48 RCX: ffffffff847af437 [ 62.710738] RDX: 0000000000000100 RSI: ffff8801c05c80a0 RDI: ffffffff85cc4be0 [ 62.711693] RBP: ffff8801db306b38 R08: 0000000000000004 R09: 1ffffffff0cddfc0 [ 62.718932] R10: ffff8801db306a00 R11: dffffc0000000000 R12: ffff8801c05c8000 [ 62.726170] R13: ffff8801d23f0c50 R14: ffff8801d431ea92 R15: 0000000000000001 [ 62.733417] ? strp_data_ready+0x2b7/0x390 [ 62.737624] ? strp_data_ready+0x2b7/0x390 [ 62.741830] psock_data_ready+0x56/0x70 [ 62.745773] tcp_child_process+0x559/0x990 [ 62.749986] ? refcount_inc_not_zero+0x61/0x180 [ 62.754623] ? refcount_add_not_zero+0x1c3/0x200 [ 62.759346] ? tcp_timewait_state_process+0x1380/0x1380 [ 62.764681] ? tcp_filter+0x111/0x160 [ 62.768452] tcp_v4_rcv+0x1827/0x2f80 [ 62.772239] ? tcp_v4_early_demux+0xa30/0xa30 [ 62.776711] ip_local_deliver_finish+0x2e2/0xba0 [ 62.781439] ? inet_del_offload+0x40/0x40 [ 62.785559] ? nf_hook_slow+0xd3/0x1a0 [ 62.789418] ip_local_deliver+0x1ce/0x6e0 [ 62.793537] ? ip_call_ra_chain+0x6d0/0x6d0 [ 62.797829] ? check_noncircular+0x20/0x20 [ 62.802033] ? inet_del_offload+0x40/0x40 [ 62.806150] ? __local_bh_enable_ip+0x9d/0x160 [ 62.810700] ? ipt_do_table+0xd6f/0x1330 [ 62.814732] ip_rcv_finish+0x887/0x19a0 [ 62.818679] ? ip_local_deliver_finish+0xba0/0xba0 [ 62.823581] ? ip_rcv+0xf07/0x1820 [ 62.827088] ? lock_downgrade+0x990/0x990 [ 62.831206] ? nf_nat_ipv4_in+0x1cd/0x270 [ 62.835317] ? iptable_nat_ipv4_fn+0x40/0x40 [ 62.839701] ? nf_hook_slow+0xd3/0x1a0 [ 62.843561] ip_rcv+0xc3f/0x1820 [ 62.846904] ? ip_local_deliver+0x6e0/0x6e0 [ 62.851206] ? ip_local_deliver_finish+0xba0/0xba0 [ 62.856107] ? ip_local_deliver+0x6e0/0x6e0 [ 62.860410] __netif_receive_skb_core+0x1a3e/0x34b0 [ 62.865394] ? mark_held_locks+0xaf/0x100 [ 62.869517] ? nf_ingress+0x9f0/0x9f0 [ 62.873284] ? print_irqtrace_events+0x270/0x270 [ 62.878010] ? find_held_lock+0x35/0x1d0 [ 62.882044] ? cpuacct_charge+0x2de/0x5b0 [ 62.886164] ? find_held_lock+0x35/0x1d0 [ 62.890198] ? print_irqtrace_events+0x270/0x270 [ 62.894922] ? update_curr+0x45c/0xa60 [ 62.898777] ? lock_downgrade+0x990/0x990 [ 62.902898] ? fastpath_timer_check+0x7d5/0xa70 [ 62.907538] ? __lock_acquire+0x6aa/0x3d50 [ 62.911741] ? check_noncircular+0x20/0x20 [ 62.915942] ? check_noncircular+0x20/0x20 [ 62.920147] ? print_irqtrace_events+0x270/0x270 [ 62.924887] ? hrtimer_forward+0x2d0/0x2d0 [ 62.929096] ? find_held_lock+0x35/0x1d0 [ 62.933134] ? lock_acquire+0x1d5/0x580 [ 62.937074] ? process_backlog+0x45f/0x740 [ 62.941272] ? lock_acquire+0x1d5/0x580 [ 62.945212] ? process_backlog+0x1ab/0x740 [ 62.949420] ? lock_release+0xa40/0xa40 [ 62.953359] ? __lock_is_held+0xb6/0x140 [ 62.957396] __netif_receive_skb+0x2c/0x1b0 [ 62.961684] ? __netif_receive_skb+0x2c/0x1b0 [ 62.966147] process_backlog+0x203/0x740 [ 62.970173] ? mark_held_locks+0xaf/0x100 [ 62.974296] net_rx_action+0x792/0x1910 [ 62.978250] ? napi_complete_done+0x6c0/0x6c0 [ 62.982711] ? scheduler_tick+0x1ba/0x3a0 [ 62.986826] ? lock_downgrade+0x990/0x990 [ 62.990943] ? __perf_event_task_sched_in+0xc20/0xc20 [ 62.996102] ? do_raw_spin_trylock+0x190/0x190 [ 63.000650] ? cpu_load_update_nohz_stop+0x2e0/0x2e0 [ 63.005723] ? kvm_sched_clock_read+0x25/0x40 [ 63.010191] ? check_noncircular+0x20/0x20 [ 63.014396] ? timerqueue_add+0x1e9/0x280 [ 63.018515] ? enqueue_hrtimer+0x162/0x490 [ 63.022719] ? __remove_hrtimer+0x190/0x190 [ 63.027014] ? find_held_lock+0x35/0x1d0 [ 63.031052] ? clockevents_program_event+0x163/0x2e0 [ 63.036124] ? print_irqtrace_events+0x270/0x270 [ 63.040856] ? pvclock_read_flags+0x160/0x160 [ 63.045328] ? check_noncircular+0x20/0x20 [ 63.049529] ? kvm_clock_get_cycles+0x25/0x30 [ 63.053990] ? ktime_get+0x26f/0x3a0 [ 63.057675] ? do_gettimeofday+0x190/0x190 [ 63.061876] ? lock_downgrade+0x990/0x990 [ 63.065995] ? check_noncircular+0x20/0x20 [ 63.070193] ? do_raw_spin_trylock+0x190/0x190 [ 63.074740] ? do_timer+0x50/0x50 [ 63.078159] ? tick_nohz_handler+0x130/0x130 [ 63.082539] ? __lock_is_held+0xb6/0x140 [ 63.086581] __do_softirq+0x2d7/0xb85 [ 63.090355] ? __irqentry_text_end+0x4/0x4 [ 63.094555] ? irq_exit+0xbb/0x200 [ 63.098064] ? smp_apic_timer_interrupt+0x16b/0x700 [ 63.103047] ? smp_reschedule_interrupt+0xe6/0x670 [ 63.107941] ? smp_call_function_single_interrupt+0x640/0x640 [ 63.113790] ? _raw_spin_lock+0x32/0x40 [ 63.117738] ? handle_edge_irq+0x2b4/0x7c0 [ 63.121953] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 63.126769] do_softirq_own_stack+0x2a/0x40 [ 63.131055] [ 63.133259] do_softirq.part.22+0x14d/0x190 [ 63.137547] ? ip_finish_output2+0x87a/0x1460 [ 63.142008] __local_bh_enable_ip+0x135/0x160 [ 63.146471] ip_finish_output2+0x8ad/0x1460 [ 63.150767] ? dst_output+0x140/0x140 [ 63.154532] ? check_noncircular+0x20/0x20 [ 63.158734] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 63.163717] ? ipt_do_table+0xd04/0x1330 [ 63.167743] ? trace_hardirqs_on+0xd/0x10 [ 63.171856] ? __local_bh_enable_ip+0x9d/0x160 [ 63.176408] ? ipt_do_table+0xd6f/0x1330 [ 63.180433] ? trace_hardirqs_on+0xd/0x10 [ 63.184550] ? ipv4_mtu+0x28c/0x3d0 [ 63.188144] ? rt_cpu_seq_show+0x2c0/0x2c0 [ 63.192348] ? __lock_is_held+0xb6/0x140 [ 63.196386] ip_finish_output+0x85e/0xd10 [ 63.200500] ? ip_finish_output+0x85e/0xd10 [ 63.204791] ? ip_fragment.constprop.50+0x200/0x200 [ 63.209772] ? iptable_mangle_hook+0xa9/0x550 [ 63.214241] ? nf_hook_slow+0xd3/0x1a0 [ 63.218101] ip_output+0x1cc/0x860 [ 63.221610] ? ip_mc_output+0x1350/0x1350 [ 63.225734] ? ip_fragment.constprop.50+0x200/0x200 [ 63.230726] ip_local_out+0x95/0x160 [ 63.234424] ip_queue_xmit+0x8c6/0x18e0 [ 63.238365] ? tcp_rcv_state_process+0x4646/0x4850 [ 63.243265] ? ip_build_and_send_pkt+0xc30/0xc30 [ 63.247989] ? refcount_dec_if_one+0x20/0x20 [ 63.252368] ? __tcp_v4_send_check+0x1b8/0x350 [ 63.256913] ? tcp_options_write+0x228/0x940 [ 63.261292] tcp_transmit_skb+0x1ab7/0x3840 [ 63.265595] ? __tcp_select_window+0x8d0/0x8d0 [ 63.270145] ? kasan_kmalloc+0xad/0xe0 [ 63.274004] ? __kmalloc_node_track_caller+0x47/0x70 [ 63.279080] ? memset+0x31/0x40 [ 63.282330] ? __alloc_skb+0x57e/0x780 [ 63.286188] ? skb_copy_and_csum_dev+0x360/0x360 [ 63.290930] ? sock_def_wakeup+0x222/0x350 [ 63.295142] tcp_send_ack.part.37+0x3bb/0x650 [ 63.299608] tcp_send_ack+0x49/0x60 [ 63.303203] tcp_rcv_state_process+0x4646/0x4850 [ 63.307932] ? tcp_finish_connect+0x410/0x410 [ 63.312399] ? __release_sock+0xca/0x360 [ 63.316427] ? lock_downgrade+0x990/0x990 [ 63.320548] ? mark_held_locks+0xaf/0x100 [ 63.324662] ? __local_bh_enable_ip+0x9d/0x160 [ 63.329217] tcp_v4_do_rcv+0x55c/0x7d0 [ 63.333072] ? tcp_v4_do_rcv+0x55c/0x7d0 [ 63.337104] __release_sock+0x124/0x360 [ 63.341052] release_sock+0xa4/0x2a0 [ 63.344736] ? __release_sock+0x360/0x360 [ 63.348855] ? find_held_lock+0x35/0x1d0 [ 63.352889] __inet_stream_connect+0x651/0xf00 [ 63.357447] ? inet_bind+0x910/0x910 [ 63.361135] ? mark_held_locks+0xaf/0x100 [ 63.365250] ? __local_bh_enable_ip+0x9d/0x160 [ 63.369800] ? __init_waitqueue_head+0x140/0x140 [ 63.374522] ? trace_hardirqs_on+0xd/0x10 [ 63.378637] ? __local_bh_enable_ip+0x9d/0x160 [ 63.383193] inet_stream_connect+0x58/0xa0 [ 63.387399] SYSC_connect+0x204/0x470 [ 63.391168] ? SYSC_bind+0x3f0/0x3f0 [ 63.394848] ? ioctl_preallocate+0x2b0/0x2b0 [ 63.399227] ? selinux_capable+0x40/0x40 [ 63.403260] ? __fd_install+0x69b/0x6a0 [ 63.407201] ? sock_map_fd+0x53/0x70 [ 63.410888] ? entry_SYSCALL_64_fastpath+0x5/0xbe [ 63.415700] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 63.420688] SyS_connect+0x24/0x30 [ 63.424196] entry_SYSCALL_64_fastpath+0x1f/0xbe [ 63.428918] RIP: 0033:0x43ff69 [ 63.432075] RSP: 002b:00007ffd93f1d258 EFLAGS: 00000217 ORIG_RAX: 000000000000002a [ 63.439748] RAX: ffffffffffffffda RBX: ffffffffffffffff RCX: 000000000043ff69 [ 63.446986] RDX: 0000000000000010 RSI: 00000000200d1ff0 RDI: 0000000000000004 [ 63.454223] RBP: 0000000000000082 R08: 0000000000000000 R09: 0000000000000000 [ 63.461459] R10: 0000000000000000 R11: 0000000000000217 R12: 00000000004018d0 [ 63.468696] R13: 0000000000401960 R14: 0000000000000000 R15: 0000000000000000 [ 63.476100] Dumping ftrace buffer: [ 63.479654] (ftrace buffer empty) [ 63.483329] Kernel Offset: disabled [ 63.486926] Rebooting in 86400 seconds..