[....] 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[ 21.639721] random: sshd: uninitialized urandom read (32 bytes read, 32 bits of entropy available) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 23.244010] random: sshd: uninitialized urandom read (32 bytes read, 35 bits of entropy available) [ 23.485569] random: sshd: uninitialized urandom read (32 bytes read, 35 bits of entropy available) [ 24.487602] random: nonblocking pool is initialized Warning: Permanently added '10.128.0.8' (ECDSA) to the list of known hosts. 2018/05/24 18:42:54 parsed 1 programs 2018/05/24 18:42:54 executed programs: 0 [ 30.670642] IPVS: Creating netns size=2552 id=1 [ 30.844622] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 30.859970] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 30.940711] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 30.956243] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 31.037436] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 31.052901] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 31.068412] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 31.085362] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 31.803300] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 31.883746] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready 2018/05/24 18:42:59 executed programs: 57 [ 39.599325] TCP: out of memory -- consider tuning tcp_mem [ 39.659208] TCP: out of memory -- consider tuning tcp_mem [ 39.709212] TCP: out of memory -- consider tuning tcp_mem [ 39.769212] TCP: out of memory -- consider tuning tcp_mem [ 39.826018] TCP: out of memory -- consider tuning tcp_mem [ 39.831703] TCP: out of memory -- consider tuning tcp_mem [ 39.884701] TCP: out of memory -- consider tuning tcp_mem [ 39.891274] TCP: out of memory -- consider tuning tcp_mem [ 39.946289] TCP: out of memory -- consider tuning tcp_mem [ 39.951943] TCP: out of memory -- consider tuning tcp_mem 2018/05/24 18:43:04 executed programs: 141 [ 44.617629] net_ratelimit: 148 callbacks suppressed [ 44.622692] TCP: out of memory -- consider tuning tcp_mem [ 44.629214] TCP: out of memory -- consider tuning tcp_mem [ 44.669294] TCP: out of memory -- consider tuning tcp_mem [ 44.727574] TCP: out of memory -- consider tuning tcp_mem [ 44.733995] TCP: out of memory -- consider tuning tcp_mem [ 44.739203] TCP: out of memory -- consider tuning tcp_mem [ 44.790458] TCP: out of memory -- consider tuning tcp_mem [ 44.829196] TCP: out of memory -- consider tuning tcp_mem [ 44.879211] TCP: out of memory -- consider tuning tcp_mem [ 44.884964] TCP: out of memory -- consider tuning tcp_mem 2018/05/24 18:43:09 executed programs: 261 [ 49.668663] net_ratelimit: 176 callbacks suppressed [ 49.673724] TCP: out of memory -- consider tuning tcp_mem [ 49.679190] TCP: out of memory -- consider tuning tcp_mem [ 49.719210] TCP: out of memory -- consider tuning tcp_mem [ 49.749212] TCP: out of memory -- consider tuning tcp_mem [ 49.763443] TCP: out of memory -- consider tuning tcp_mem [ 49.899280] TCP: out of memory -- consider tuning tcp_mem [ 49.989261] TCP: out of memory -- consider tuning tcp_mem [ 50.050653] TCP: out of memory -- consider tuning tcp_mem [ 50.056493] TCP: out of memory -- consider tuning tcp_mem [ 50.059209] TCP: out of memory -- consider tuning tcp_mem 2018/05/24 18:43:15 executed programs: 379 [ 54.691662] net_ratelimit: 173 callbacks suppressed [ 54.696695] TCP: out of memory -- consider tuning tcp_mem [ 54.702350] TCP: out of memory -- consider tuning tcp_mem [ 54.739205] TCP: out of memory -- consider tuning tcp_mem [ 54.769206] TCP: out of memory -- consider tuning tcp_mem [ 54.780674] TCP: out of memory -- consider tuning tcp_mem [ 54.809198] TCP: out of memory -- consider tuning tcp_mem [ 54.839208] TCP: out of memory -- consider tuning tcp_mem [ 54.839363] TCP: out of memory -- consider tuning tcp_mem [ 54.865476] TCP: out of memory -- consider tuning tcp_mem [ 54.889205] TCP: out of memory -- consider tuning tcp_mem 2018/05/24 18:43:20 executed programs: 508 [ 59.709300] net_ratelimit: 207 callbacks suppressed [ 59.714337] TCP: out of memory -- consider tuning tcp_mem [ 59.739193] TCP: out of memory -- consider tuning tcp_mem [ 59.754157] TCP: out of memory -- consider tuning tcp_mem [ 59.779202] TCP: out of memory -- consider tuning tcp_mem [ 59.779267] TCP: out of memory -- consider tuning tcp_mem [ 59.849194] TCP: out of memory -- consider tuning tcp_mem [ 59.887442] TCP: out of memory -- consider tuning tcp_mem [ 59.894316] TCP: out of memory -- consider tuning tcp_mem [ 59.919229] TCP: out of memory -- consider tuning tcp_mem [ 59.939193] TCP: out of memory -- consider tuning tcp_mem 2018/05/24 18:43:25 executed programs: 641 [ 64.766726] net_ratelimit: 186 callbacks suppressed [ 64.771797] TCP: out of memory -- consider tuning tcp_mem [ 64.801276] TCP: out of memory -- consider tuning tcp_mem [ 64.819227] TCP: out of memory -- consider tuning tcp_mem [ 64.846059] TCP: out of memory -- consider tuning tcp_mem [ 64.851764] TCP: out of memory -- consider tuning tcp_mem [ 64.859205] TCP: out of memory -- consider tuning tcp_mem [ 64.899208] TCP: out of memory -- consider tuning tcp_mem [ 64.906211] TCP: out of memory -- consider tuning tcp_mem [ 64.954150] TCP: out of memory -- consider tuning tcp_mem [ 64.979236] TCP: out of memory -- consider tuning tcp_mem 2018/05/24 18:43:30 executed programs: 762 [ 69.819198] net_ratelimit: 187 callbacks suppressed [ 69.824253] TCP: out of memory -- consider tuning tcp_mem [ 69.869203] TCP: out of memory -- consider tuning tcp_mem [ 69.915557] TCP: out of memory -- consider tuning tcp_mem [ 69.921496] TCP: out of memory -- consider tuning tcp_mem [ 69.959198] TCP: out of memory -- consider tuning tcp_mem [ 69.999220] TCP: out of memory -- consider tuning tcp_mem [ 70.069193] TCP: out of memory -- consider tuning tcp_mem [ 70.069205] TCP: out of memory -- consider tuning tcp_mem [ 70.099212] TCP: out of memory -- consider tuning tcp_mem [ 70.146898] TCP: out of memory -- consider tuning tcp_mem 2018/05/24 18:43:35 executed programs: 899 [ 72.999678] ------------[ cut here ]------------ [ 73.004461] kernel BUG at net/core/skbuff.c:2192! [ 73.009320] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 73.015218] Dumping ftrace buffer: [ 73.018748] (ftrace buffer empty) [ 73.022450] Modules linked in: [ 73.025741] CPU: 0 PID: 2025 Comm: udevd Not tainted 4.4.132-gc3c51ea #45 [ 73.032642] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 73.041985] task: ffff8800b62b3000 task.stack: ffff8800b6218000 [ 73.048030] RIP: 0010:[] [] skb_copy_and_csum_bits+0x69a/0x7d0 [ 73.057329] RSP: 0018:ffff8801db207260 EFLAGS: 00010206 [ 73.062765] RAX: ffff8800b62b3000 RBX: 000000006ddde750 RCX: 1ffff10013678209 [ 73.070629] RDX: 0000000000000100 RSI: ffffffff82f3b04a RDI: ffff88009b3c1048 [ 73.077896] RBP: ffff8801db2072e0 R08: 0000000000000000 R09: 0000000000000000 [ 73.085162] R10: 000000000000003c R11: ffff8801cdabeb5f R12: 0000000000000000 [ 73.092423] R13: 0000000000000224 R14: 0000000000000000 R15: ffff88009b3c1040 [ 73.099689] FS: 00007f9f4ffe27a0(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 73.107955] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 73.113824] CR2: 00000000209322d3 CR3: 00000000b61b2000 CR4: 00000000001606f0 [ 73.121073] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 73.128327] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 73.135584] Stack: [ 73.137720] ffffffff8129085c ffff8801d3408e84 ffffffff838c36ec ffffffff8113f75d [ 73.145736] ffff8801d3408e88 ffff8801cdabe8e8 6ddde7500000003c 000001e80000003c [ 73.153749] 0000003c0000003c ffff8801d3408dc0 0000000000000000 ffff8800b6cde9c0 [ 73.161889] Call Trace: [ 73.164461] [ 73.166520] [] ? call_timer_fn+0x18c/0x870 [ 73.172687] [] ? __do_softirq+0x22c/0xa1a [ 73.178476] [] ? irq_exit+0x10d/0x140 [ 73.183920] [] icmp_glue_bits+0x7f/0x1e0 [ 73.189625] [] __ip_append_data.isra.44+0x1e22/0x2920 [ 73.196458] [] ? icmp_push_reply+0x510/0x510 [ 73.202510] [] ? ip_generic_getfrag+0x210/0x210 [ 73.208817] [] ? ip_setup_cork+0x421/0x680 [ 73.214684] [] ip_append_data.part.46+0xe4/0x150 [ 73.221080] [] ? icmp_push_reply+0x510/0x510 [ 73.227140] [] ? icmp_push_reply+0x510/0x510 [ 73.233190] [] ip_append_data+0x68/0x80 [ 73.238807] [] icmp_push_reply+0x19e/0x510 [ 73.244683] [] icmp_send+0xaca/0x13d0 [ 73.250124] [] ? icmp_route_lookup+0xd70/0xd70 [ 73.256345] [] ? ipv4_confirm+0x2c7/0x400 [ 73.262132] [] ? __lock_is_held+0xa2/0xf0 [ 73.268011] [] ip_fragment.constprop.50+0x1aa/0x200 [ 73.274672] [] ip_finish_output+0x6c4/0xbc0 [ 73.280639] [] ip_output+0x219/0x4c0 [ 73.285990] [] ? ip_mc_output+0x980/0x980 [ 73.291774] [] ? ip_fragment.constprop.50+0x200/0x200 [ 73.298601] [] ip_local_out+0x9b/0x180 [ 73.304134] [] ip_queue_xmit+0x88e/0x1ab0 [ 73.309928] [] ? ip_queue_xmit+0x3e/0x1ab0 [ 73.315806] [] ? __tcp_v4_send_check+0x1c5/0x360 [ 73.322198] [] tcp_transmit_skb+0x1642/0x2bf0 [ 73.328333] [] ? bictcp_cong_avoid+0xde0/0xde0 [ 73.334579] [] ? __tcp_select_window+0x520/0x520 [ 73.340970] [] ? tcp_adjust_pcount+0x2ab/0x520 [ 73.347193] [] ? tcp_fragment+0xb97/0x1020 [ 73.353070] [] __tcp_retransmit_skb+0x5fc/0x1860 [ 73.359469] [] ? bictcp_state+0x41e/0x4f0 [ 73.365255] [] ? bictcp_acked+0x880/0x880 [ 73.371030] [] ? tcp_enter_loss+0xbbe/0x10b0 [ 73.377076] [] tcp_retransmit_skb+0x23/0x2c0 [ 73.383130] [] tcp_retransmit_timer+0x7bd/0x1ed0 [ 73.389533] [] ? tcp_write_timer+0x20/0xd0 [ 73.395422] [] tcp_write_timer_handler+0x1f1/0x6f0 [ 73.402003] [] tcp_write_timer+0xba/0xd0 [ 73.407706] [] call_timer_fn+0x18c/0x870 [ 73.413409] [] ? call_timer_fn+0xda/0x870 [ 73.419199] [] ? debug_object_deactivate+0x214/0x340 [ 73.425944] [] ? tcp_write_timer_handler+0x6f0/0x6f0 [ 73.432687] [] ? process_timeout+0x20/0x20 [ 73.438562] [] ? _raw_spin_unlock_irq+0x27/0x50 [ 73.444873] [] ? trace_hardirqs_on_caller+0x266/0x590 [ 73.451697] [] run_timer_softirq+0x642/0xb90 [ 73.457748] [] ? tcp_write_timer_handler+0x6f0/0x6f0 [ 73.464505] [] ? call_timer_fn+0x870/0x870 [ 73.470391] [] __do_softirq+0x22c/0xa1a [ 73.476007] [] irq_exit+0x10d/0x140 [ 73.481277] [] smp_apic_timer_interrupt+0x81/0xa0 [ 73.487760] [] apic_timer_interrupt+0xa0/0xb0 [ 73.493887] [ 73.495937] [] ? ___might_sleep+0x31/0x260 [ 73.502092] [] __might_sleep+0x90/0x1a0 [ 73.507707] [] mutex_lock_nested+0x87/0x850 [ 73.513668] [] ? __ww_mutex_lock+0x14c0/0x14c0 [ 73.519895] [] ? mutex_lock_killable_nested+0x980/0x980 [ 73.526904] [] ? follow_managed+0x15b/0x9e0 [ 73.532874] [] kernfs_iop_permission+0x52/0xa0 [ 73.539104] [] ? kernfs_iop_getattr+0xa0/0xa0 [ 73.545235] [] __inode_permission2+0x1c3/0x240 [ 73.551460] [] inode_permission2+0x2f/0x110 [ 73.557420] [] may_open.isra.40+0xd1/0x240 [ 73.563293] [] path_openat+0x48e/0x3a10 [ 73.568913] [] ? depot_save_stack+0x1c9/0x610 [ 73.575047] [] ? path_lookupat.isra.36+0x410/0x410 [ 73.581609] [] ? getname_flags+0xc7/0x580 [ 73.587392] [] ? getname+0x19/0x20 [ 73.592568] [] ? do_sys_open+0x203/0x610 [ 73.598279] [] ? SyS_open+0x2d/0x40 [ 73.603548] [] ? entry_SYSCALL_64_fastpath+0x22/0x9e [ 73.610296] [] ? debug_check_no_locks_freed+0x210/0x210 [ 73.617311] [] ? __lock_is_held+0xa2/0xf0 [ 73.623100] [] do_filp_open+0x197/0x270 [ 73.628713] [] ? user_path_mountpoint_at+0x70/0x70 [ 73.635300] [] ? _raw_spin_unlock+0x2c/0x50 [ 73.641265] [] ? __alloc_fd+0x1f3/0x4a0 [ 73.646885] [] do_sys_open+0x31c/0x610 [ 73.652410] [] ? filp_open+0x70/0x70 [ 73.657762] [] SyS_open+0x2d/0x40 [ 73.662866] [] entry_SYSCALL_64_fastpath+0x22/0x9e [ 73.669424] Code: 00 00 4d 8b 24 24 44 8b 6d d0 4d 85 e4 0f 85 1b ff ff ff 8b 5d b4 e8 a6 61 41 fe 8b 45 bc 85 c0 0f 84 7f fe ff ff e8 96 61 41 fe <0f> 0b 8b 5d b4 e9 70 fe ff ff c7 45 b0 00 00 00 00 e9 8c fa ff [ 73.696696] RIP [] skb_copy_and_csum_bits+0x69a/0x7d0 [ 73.703655] RSP [ 73.707303] ---[ end trace 023859ae2ef4dda3 ]--- [ 73.712058] Kernel panic - not syncing: Fatal exception in interrupt [ 73.719187] Dumping ftrace buffer: [ 73.722708] (ftrace buffer empty) [ 73.726475] Kernel Offset: disabled [ 73.730070] Rebooting in 86400 seconds..