INIT: Entering runlevel: 2 [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. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added 'ci-upstream-kasan-gce-1,10.128.15.233' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 60.086156] ------------[ cut here ]------------ [ 60.086960] WARNING: CPU: 0 PID: 2996 at ./include/net/sock.h:1505 strp_data_ready+0x2b7/0x390 [ 60.088309] Kernel panic - not syncing: panic_on_warn set ... [ 60.088309] [ 60.089293] CPU: 0 PID: 2996 Comm: syzkaller142210 Not tainted 4.14.0-rc5+ #138 [ 60.090347] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.091580] Call Trace: [ 60.091933] [ 60.092238] dump_stack+0x194/0x257 [ 60.092732] ? arch_local_irq_restore+0x53/0x53 [ 60.093380] panic+0x1e4/0x417 [ 60.093813] ? __warn+0x1d9/0x1d9 [ 60.094280] ? show_regs_print_info+0x65/0x65 [ 60.094896] ? strp_data_ready+0x2b7/0x390 [ 60.095462] __warn+0x1c4/0x1d9 [ 60.095907] ? strp_data_ready+0x2b7/0x390 [ 60.096499] report_bug+0x211/0x2d0 [ 60.096996] fixup_bug+0x40/0x90 [ 60.097452] do_trap+0x260/0x390 [ 60.097933] do_error_trap+0x120/0x390 [ 60.098460] ? do_trap+0x390/0x390 [ 60.098938] ? lock_downgrade+0x990/0x990 [ 60.099510] ? strp_data_ready+0x2b7/0x390 [ 60.100088] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 60.100739] do_invalid_op+0x1b/0x20 [ 60.101259] invalid_op+0x18/0x20 [ 60.101741] RIP: 0010:strp_data_ready+0x2b7/0x390 [ 60.102406] RSP: 0018:ffff8801db206b18 EFLAGS: 00010206 [ 60.103125] RAX: ffff8801d1e02080 RBX: ffff8801dad74c48 RCX: 0000000000000000 [ 60.104121] RDX: 0000000000000100 RSI: ffff8801d29fa0a0 RDI: ffffffff85cbede0 [ 60.105075] RBP: ffff8801db206b38 R08: 0000000000000005 R09: 1ffffffff0ce0bcd [ 60.106104] R10: ffff8801db206a00 R11: dffffc0000000000 R12: ffff8801d29fa000 [ 60.112004] R13: ffff8801dad74c50 R14: ffff8801d4350a92 R15: 0000000000000001 [ 60.119261] ? strp_data_ready+0x2b7/0x390 [ 60.123466] psock_data_ready+0x56/0x70 [ 60.127411] tcp_child_process+0x559/0x990 [ 60.131615] ? refcount_inc_not_zero+0x1/0x180 [ 60.136175] ? refcount_inc_not_zero+0x3/0x180 [ 60.140727] ? tcp_timewait_state_process+0x1380/0x1380 [ 60.146064] ? tcp_filter+0x111/0x160 [ 60.149834] tcp_v4_rcv+0x17e1/0x2f20 [ 60.153620] ? tcp_v4_early_demux+0xa30/0xa30 [ 60.158097] ip_local_deliver_finish+0x2e2/0xba0 [ 60.162855] ? inet_del_offload+0x40/0x40 [ 60.166975] ? nf_hook_slow+0xd3/0x1a0 [ 60.170847] ip_local_deliver+0x1ce/0x6e0 [ 60.174966] ? ip_call_ra_chain+0x6d0/0x6d0 [ 60.179261] ? check_noncircular+0x20/0x20 [ 60.183468] ? inet_del_offload+0x40/0x40 [ 60.187587] ? __local_bh_enable_ip+0x9d/0x160 [ 60.192139] ? ipt_do_table+0xd6f/0x1330 [ 60.196169] ip_rcv_finish+0x887/0x19a0 [ 60.200121] ? ip_local_deliver_finish+0xba0/0xba0 [ 60.205025] ? ip_rcv+0xf07/0x17d0 [ 60.208536] ? lock_downgrade+0x990/0x990 [ 60.212658] ? nf_nat_ipv4_in+0x1cd/0x270 [ 60.216772] ? iptable_nat_ipv4_fn+0x40/0x40 [ 60.221158] ? nf_hook_slow+0xd3/0x1a0 [ 60.225031] ip_rcv+0xc3f/0x17d0 [ 60.228378] ? ip_local_deliver+0x6e0/0x6e0 [ 60.232684] ? ip_local_deliver_finish+0xba0/0xba0 [ 60.237584] ? ip_local_deliver+0x6e0/0x6e0 [ 60.241878] __netif_receive_skb_core+0x19af/0x33d0 [ 60.246872] ? nf_ingress+0x9f0/0x9f0 [ 60.250644] ? __lock_acquire+0x6aa/0x3d50 [ 60.254931] ? cpuusage_read+0x10/0x10 [ 60.258786] ? check_noncircular+0x20/0x20 [ 60.262999] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 60.268155] ? __lock_acquire+0x6aa/0x3d50 [ 60.272364] ? print_irqtrace_events+0x270/0x270 [ 60.277087] ? task_fork_fair+0x7b0/0x7b0 [ 60.281215] ? fastpath_timer_check+0x7d5/0xa70 [ 60.285855] ? task_tick_fair+0x11c4/0x2840 [ 60.290150] ? __lock_acquire+0x6aa/0x3d50 [ 60.294355] ? check_noncircular+0x20/0x20 [ 60.298560] ? check_noncircular+0x20/0x20 [ 60.303192] ? print_irqtrace_events+0x270/0x270 [ 60.307930] ? active_load_balance_cpu_stop+0x1220/0x1220 [ 60.313452] ? find_held_lock+0x35/0x1d0 [ 60.317488] ? lock_acquire+0x1d5/0x580 [ 60.321431] ? process_backlog+0x45f/0x740 [ 60.325631] ? lock_acquire+0x1d5/0x580 [ 60.329572] ? process_backlog+0x1ab/0x740 [ 60.333780] ? lock_release+0xa40/0xa40 [ 60.337719] ? __lock_is_held+0xb6/0x140 [ 60.341757] __netif_receive_skb+0x2c/0x1b0 [ 60.346045] ? __netif_receive_skb+0x2c/0x1b0 [ 60.350511] process_backlog+0x203/0x740 [ 60.354540] ? mark_held_locks+0xaf/0x100 [ 60.358666] net_rx_action+0x792/0x1910 [ 60.362622] ? napi_complete_done+0x6c0/0x6c0 [ 60.367086] ? trace_hardirqs_on_caller+0x19e/0x5c0 [ 60.372071] ? trace_hardirqs_on+0xd/0x10 [ 60.376189] ? _raw_spin_unlock_irq+0x27/0x70 [ 60.380654] ? __run_timers+0x16f/0xb90 [ 60.384606] ? del_timer_sync+0x240/0x240 [ 60.388727] ? timerqueue_add+0x1e9/0x280 [ 60.392848] ? enqueue_hrtimer+0x162/0x490 [ 60.397050] ? __remove_hrtimer+0x190/0x190 [ 60.401344] ? check_noncircular+0x20/0x20 [ 60.405545] ? find_held_lock+0x35/0x1d0 [ 60.409584] ? clockevents_program_event+0x163/0x2e0 [ 60.414658] ? print_irqtrace_events+0x270/0x270 [ 60.419387] ? __lock_is_held+0xb6/0x140 [ 60.423424] ? check_noncircular+0x20/0x20 [ 60.427632] ? __local_bh_enable+0x5f/0x70 [ 60.431836] ? __do_softirq+0x7a0/0xb85 [ 60.435782] ? lock_downgrade+0x990/0x990 [ 60.439905] ? __softirqentry_text_start+0x8/0x8 [ 60.444629] ? do_raw_spin_trylock+0x190/0x190 [ 60.449183] ? do_timer+0x50/0x50 [ 60.452610] ? __lock_is_held+0xb6/0x140 [ 60.456652] __do_softirq+0x2d7/0xb85 [ 60.460429] ? __softirqentry_text_start+0x8/0x8 [ 60.465149] ? irq_exit+0xbb/0x200 [ 60.468657] ? smp_apic_timer_interrupt+0x177/0x710 [ 60.473642] ? smp_call_function_single_interrupt+0x650/0x650 [ 60.479498] ? _raw_spin_lock+0x32/0x40 [ 60.483447] ? handle_edge_irq+0x2b4/0x7c0 [ 60.487661] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 60.492476] do_softirq_own_stack+0x2a/0x40 [ 60.496763] [ 60.498967] do_softirq.part.22+0x14d/0x190 [ 60.503259] ? ip_finish_output2+0x87a/0x1460 [ 60.507721] __local_bh_enable_ip+0x135/0x160 [ 60.512184] ip_finish_output2+0x8ad/0x1460 [ 60.516477] ? dst_output+0x140/0x140 [ 60.520244] ? check_noncircular+0x20/0x20 [ 60.524447] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 60.529430] ? ipt_do_table+0xd04/0x1330 [ 60.533459] ? trace_hardirqs_on+0xd/0x10 [ 60.537575] ? __local_bh_enable_ip+0x9d/0x160 [ 60.542125] ? ipt_do_table+0xd6f/0x1330 [ 60.546152] ? trace_hardirqs_on+0xd/0x10 [ 60.550271] ? ipv4_mtu+0x28c/0x3d0 [ 60.553868] ? rt_cpu_seq_show+0x2c0/0x2c0 [ 60.558076] ? __lock_is_held+0xb6/0x140 [ 60.562122] ip_finish_output+0x85e/0xd10 [ 60.566239] ? ip_finish_output+0x85e/0xd10 [ 60.570540] ? ip_fragment.constprop.50+0x200/0x200 [ 60.575529] ? iptable_mangle_hook+0xa9/0x550 [ 60.579999] ? nf_hook_slow+0xd3/0x1a0 [ 60.583857] ip_output+0x1cc/0x860 [ 60.587370] ? ip_mc_output+0x1350/0x1350 [ 60.591498] ? ip_fragment.constprop.50+0x200/0x200 [ 60.596492] ip_local_out+0x95/0x160 [ 60.600180] ip_queue_xmit+0x8c6/0x18e0 [ 60.604130] ? ip_build_and_send_pkt+0xc30/0xc30 [ 60.608855] ? refcount_dec_if_one+0x20/0x20 [ 60.613235] ? __tcp_v4_send_check+0x1b8/0x350 [ 60.617786] ? tcp_options_write+0x228/0x940 [ 60.622167] tcp_transmit_skb+0x19a1/0x3450 [ 60.626468] ? __tcp_select_window+0x8d0/0x8d0 [ 60.631021] ? memset+0x31/0x40 [ 60.634276] ? __alloc_skb+0x548/0x740 [ 60.638136] ? skb_copy_and_csum_dev+0x360/0x360 [ 60.642876] ? sock_def_wakeup+0x222/0x350 [ 60.647084] ? tcp_finish_connect+0x3af/0x790 [ 60.651554] tcp_send_ack.part.34+0x386/0x610 [ 60.656021] tcp_send_ack+0x49/0x60 [ 60.659619] tcp_rcv_state_process+0x4a25/0x4d10 [ 60.664344] ? mark_held_locks+0xaf/0x100 [ 60.668467] ? tcp_finish_connect+0x790/0x790 [ 60.672931] ? find_held_lock+0x35/0x1d0 [ 60.676970] ? lock_downgrade+0x990/0x990 [ 60.681093] ? mark_held_locks+0xaf/0x100 [ 60.685212] ? __local_bh_enable_ip+0x9d/0x160 [ 60.689768] tcp_v4_do_rcv+0x55c/0x7d0 [ 60.693621] ? tcp_v4_do_rcv+0x55c/0x7d0 [ 60.697653] __release_sock+0x124/0x360 [ 60.701602] release_sock+0xa4/0x2a0 [ 60.705284] ? __release_sock+0x360/0x360 [ 60.709402] ? find_held_lock+0x35/0x1d0 [ 60.713436] __inet_stream_connect+0x651/0xf00 [ 60.717992] ? inet_bind+0x910/0x910 [ 60.721679] ? mark_held_locks+0xaf/0x100 [ 60.725796] ? __local_bh_enable_ip+0x9d/0x160 [ 60.730349] ? __init_waitqueue_head+0x140/0x140 [ 60.735073] ? trace_hardirqs_on+0xd/0x10 [ 60.739187] ? __local_bh_enable_ip+0x9d/0x160 [ 60.743741] inet_stream_connect+0x58/0xa0 [ 60.747950] SYSC_connect+0x204/0x470 [ 60.751723] ? SYSC_bind+0x3f0/0x3f0 [ 60.755404] ? ioctl_preallocate+0x2b0/0x2b0 [ 60.759783] ? selinux_capable+0x40/0x40 [ 60.763820] ? __fd_install+0x62b/0x6a0 [ 60.767763] ? sock_map_fd+0x53/0x70 [ 60.771452] ? entry_SYSCALL_64_fastpath+0x5/0xbe [ 60.776265] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 60.781253] SyS_connect+0x24/0x30 [ 60.784762] entry_SYSCALL_64_fastpath+0x1f/0xbe [ 60.789486] RIP: 0033:0x43ff69 [ 60.792643] RSP: 002b:00007ffcf59753a8 EFLAGS: 00000217 ORIG_RAX: 000000000000002a [ 60.800318] RAX: ffffffffffffffda RBX: ffffffffffffffff RCX: 000000000043ff69 [ 60.807556] RDX: 0000000000000010 RSI: 00000000200d1ff0 RDI: 0000000000000004 [ 60.814793] RBP: 0000000000000082 R08: 0000000000000000 R09: 0000000000000000 [ 60.822031] R10: 0000000000000000 R11: 0000000000000217 R12: 00000000004018d0 [ 60.829268] R13: 0000000000401960 R14: 0000000000000000 R15: 0000000000000000 [ 60.836729] Dumping ftrace buffer: [ 60.840298] (ftrace buffer empty) [ 60.843976] Kernel Offset: disabled [ 60.847590] Rebooting in 86400 seconds..