[info] Using makefile-style concurrent boot in runlevel 2. [ 26.905872] audit: type=1800 audit(1544832940.252:21): pid=5842 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2419 res=0 [....] 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 syzkaller login: [ 107.759321] cron (5993) used greatest stack depth: 15744 bytes left Warning: Permanently added '10.128.0.124' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program [ 617.654227] hrtimer: interrupt took 45747 ns [ 617.654231] hrtimer: interrupt took 48541 ns executing program [ 617.852745] ================================================================== [ 617.860293] BUG: KASAN: use-after-free in ccid_hc_tx_delete+0xe0/0x100 [ 617.867206] Read of size 8 at addr ffff8881c1894b80 by task syz-executor074/6032 [ 617.874749] [ 617.876408] CPU: 1 PID: 6032 Comm: syz-executor074 Not tainted 4.20.0-rc6+ #373 [ 617.883868] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 617.885403] kernel tried to execute NX-protected page - exploit attempt? (uid: 0) [ 617.893239] Call Trace: [ 617.900979] BUG: unable to handle kernel paging request at ffff8881c17d2e80 [ 617.903568] [ 617.910668] PGD be01067 P4D be01067 PUD 1d940d063 PMD 80000001c16001e3 [ 617.912889] dump_stack+0x244/0x39d [ 617.919631] Oops: 0011 [#1] PREEMPT SMP KASAN [ 617.923373] ? dump_stack_print_info.cold.1+0x20/0x20 [ 617.927855] CPU: 0 PID: 6031 Comm: syz-executor074 Not tainted 4.20.0-rc6+ #373 [ 617.933050] ? printk+0xa7/0xcf [ 617.940485] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 617.943788] ? kmsg_dump_rewind_nolock+0xe4/0xe4 [ 617.953252] RIP: 0010:0xffff8881c17d2e80 [ 617.958002] print_address_description.cold.7+0x9/0x1ff [ 617.962166] Code: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 <40> e4 fe d1 81 88 ff ff 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 617.967580] kasan_report.cold.8+0x242/0x309 [ 617.986624] RSP: 0018:ffff8881dae06ba8 EFLAGS: 00010206 [ 617.991057] ? ccid_hc_tx_delete+0xe0/0x100 [ 617.996536] RAX: ffff8881b381e180 RBX: ffff8881c1894b80 RCX: ffffffff873face6 [ 618.000858] __asan_report_load8_noabort+0x14/0x20 [ 618.008135] RDX: 0000000000000100 RSI: ffffffff873fac83 RDI: ffff8881b2fff440 [ 618.013066] ccid_hc_tx_delete+0xe0/0x100 [ 618.020526] RBP: ffff8881dae06bd0 R08: ffff8881b381e180 R09: 0000000000000000 [ 618.024681] dccp_hdlr_ccid+0x7d/0x150 [ 618.031962] R10: ffffed103b5c5b5f R11: ffff8881dae2dafb R12: ffff8881d21564c0 [ 618.035847] __dccp_feat_activate+0x188/0x280 [ 618.043109] R13: ffff8881c17d2e80 R14: ffff8881b2fff440 R15: 0000000000000001 [ 618.047625] ? __dccp_feat_activate+0x280/0x280 [ 618.054928] FS: 00007f3d93ed0700(0000) GS:ffff8881dae00000(0000) knlGS:0000000000000000 [ 618.059599] dccp_feat_activate_values+0x3c1/0x80a [ 618.067834] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 618.072765] ? dccp_feat_init+0x550/0x550 [ 618.078653] CR2: ffff8881c17d2e80 CR3: 00000001c15b8000 CR4: 00000000001406f0 [ 618.082816] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 618.090204] Call Trace: [ 618.095748] ? xfrm_lookup_route+0x74/0x1f0 [ 618.098318] [ 618.102655] ? inet6_csk_route_req+0x5a8/0x820 [ 618.104799] ? ccid_hc_tx_delete+0x7b/0x100 [ 618.109381] dccp_create_openreq_child+0x47a/0x630 [ 618.113698] dccp_hdlr_ccid+0x7d/0x150 [ 618.118648] ? dccp_create_openreq_child+0x47a/0x630 [ 618.122552] __dccp_feat_activate+0x188/0x280 [ 618.127756] ? mark_held_locks+0x130/0x130 [ 618.132245] ? __dccp_feat_activate+0x280/0x280 [ 618.136480] ? dccp_sample_rtt.cold.12+0x52/0x52 [ 618.141183] dccp_feat_activate_values+0x3c1/0x80a [ 618.146035] ? dccp_feat_reconcile+0x303/0x370 [ 618.150999] ? dccp_feat_init+0x550/0x550 [ 618.155584] dccp_v6_request_recv_sock+0x278/0x2020 [ 618.159729] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 618.164757] ? dccp_v6_do_rcv+0xbf0/0xbf0 [ 618.170290] ? xfrm_lookup_route+0x74/0x1f0 [ 618.174431] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 618.178752] ? inet6_csk_route_req+0x5a8/0x820 [ 618.184284] ? refcount_inc_not_zero_checked+0x1e5/0x2f0 [ 618.188996] dccp_create_openreq_child+0x47a/0x630 [ 618.194447] ? refcount_add_not_zero_checked+0x330/0x330 [ 618.199372] ? dccp_create_openreq_child+0x47a/0x630 [ 618.204848] ? lock_acquire+0x1ed/0x520 [ 618.209966] ? dccp_sample_rtt.cold.12+0x52/0x52 [ 618.213936] ? dccp_check_req+0x95/0x6d0 [ 618.218697] ? kvm_clock_read+0x18/0x30 [ 618.222764] dccp_check_req+0x47d/0x6d0 [ 618.226742] ? kvm_sched_clock_read+0x9/0x20 [ 618.230711] ? dccp_create_openreq_child+0x630/0x630 [ 618.235137] dccp_v6_request_recv_sock+0x278/0x2020 [ 618.240241] ? dccp_invalid_packet+0x64/0x880 [ 618.245265] ? dccp_v6_do_rcv+0xbf0/0xbf0 [ 618.249758] dccp_v6_rcv+0x874/0x1ce9 [ 618.253918] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 618.257722] ? dccp_v6_err+0x1760/0x1760 [ 618.262470] ? lockdep_hardirqs_on+0x296/0x5b0 [ 618.266546] ? __lock_is_held+0xb5/0x140 [ 618.271136] ? retint_kernel+0x2d/0x2d [ 618.275225] ip6_input_finish+0x3fc/0x1aa0 [ 618.279265] ? trace_hardirqs_on_caller+0xc0/0x310 [ 618.283545] ? ip6_rcv_core.isra.17+0x1e10/0x1e10 [ 618.288469] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 618.293310] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 618.298080] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 618.303203] ? nf_hook_slow+0x11e/0x1c0 [ 618.308652] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 618.312619] ip6_input+0xe9/0x600 [ 618.317380] ? dccp_check_req+0x3f9/0x6d0 [ 618.320843] ? ip6_input_finish+0x1aa0/0x1aa0 [ 618.324986] dccp_check_req+0x47d/0x6d0 [ 618.329479] ? ip6_rcv_core.isra.17+0x1e10/0x1e10 [ 618.333470] ? dccp_create_openreq_child+0x630/0x630 [ 618.338340] ? rcu_read_unlock_special+0x1c0/0x1c0 [ 618.343439] ? dccp_v6_rcv+0x81e/0x1ce9 [ 618.348375] ? kasan_check_read+0x11/0x20 [ 618.352347] dccp_v6_rcv+0x874/0x1ce9 [ 618.356530] ? rcu_softirq_qs+0x20/0x20 [ 618.360335] ? dccp_v6_err+0x1760/0x1760 [ 618.364316] ip6_rcv_finish+0x17a/0x330 [ 618.368397] ? retint_kernel+0x2d/0x2d [ 618.372371] ipv6_rcv+0x115/0x640 [ 618.376253] ? ip6_input_finish+0x4f9/0x1aa0 [ 618.379704] ? ip6_input+0x600/0x600 [ 618.384107] ip6_input_finish+0x3fc/0x1aa0 [ 618.387822] ? ip6_rcv_finish_core.isra.14+0x720/0x720 [ 618.392101] ? ip6_rcv_core.isra.17+0x1e10/0x1e10 [ 618.397538] ? lock_acquire+0x1ed/0x520 [ 618.402401] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 618.406374] ? process_backlog+0x1dd/0x7a0 [ 618.411387] ? nf_hook_slow+0x11e/0x1c0 [ 618.415720] __netif_receive_skb_one_core+0x14d/0x200 [ 618.419717] ip6_input+0xe9/0x600 [ 618.425016] ? __netif_receive_skb_core+0x3b30/0x3b30 [ 618.428825] ? ip6_input_finish+0x1aa0/0x1aa0 [ 618.434038] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 618.438562] ? ip6_rcv_core.isra.17+0x1e10/0x1e10 [ 618.443933] ? rcu_softirq_qs+0x20/0x20 [ 618.448776] ? rcu_read_unlock_special+0x1c0/0x1c0 [ 618.452749] ? trace_hardirqs_off_caller+0x310/0x310 [ 618.457920] ? kasan_check_read+0x11/0x20 [ 618.463021] __netif_receive_skb+0x2c/0x1e0 [ 618.467170] ? rcu_softirq_qs+0x20/0x20 [ 618.471487] process_backlog+0x24e/0x7a0 [ 618.475521] ip6_rcv_finish+0x17a/0x330 [ 618.479582] net_rx_action+0x7fa/0x19b0 [ 618.483564] ipv6_rcv+0x115/0x640 [ 618.487550] ? napi_complete_done+0x7c0/0x7c0 [ 618.491028] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 618.495566] ? mark_held_locks+0x130/0x130 [ 618.500311] ? ip6_input+0x600/0x600 [ 618.504554] ? zap_class+0x640/0x640 [ 618.508261] ? ip6_rcv_finish_core.isra.14+0x720/0x720 [ 618.512030] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 618.517313] ? process_backlog+0x563/0x7a0 [ 618.522858] ? zap_class+0x640/0x640 [ 618.527194] __netif_receive_skb_one_core+0x14d/0x200 [ 618.531017] ? do_raw_spin_lock+0x14f/0x350 [ 618.536320] ? __netif_receive_skb_core+0x3b30/0x3b30 [ 618.540644] ? find_held_lock+0x36/0x1c0 [ 618.545852] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 618.549934] ? clockevents_program_event+0x158/0x370 [ 618.555203] ? rcu_softirq_qs+0x20/0x20 [ 618.560308] ? lock_downgrade+0x900/0x900 [ 618.564340] ? trace_hardirqs_off_caller+0x310/0x310 [ 618.568481] ? zap_class+0x640/0x640 [ 618.573617] __netif_receive_skb+0x2c/0x1e0 [ 618.577391] ? print_usage_bug+0xc0/0xc0 [ 618.581709] process_backlog+0x24e/0x7a0 [ 618.585893] ? trace_hardirqs_on+0x310/0x310 [ 618.589970] net_rx_action+0x7fa/0x19b0 [ 618.594377] ? kvm_clock_read+0x18/0x30 [ 618.598352] ? napi_complete_done+0x7c0/0x7c0 [ 618.602321] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 618.606819] ? zap_class+0x640/0x640 [ 618.611829] ? ktime_get+0x2c1/0x400 [ 618.615537] ? check_preemption_disabled+0x48/0x280 [ 618.619343] ? zap_class+0x640/0x640 [ 618.624357] ? __lock_is_held+0xb5/0x140 [ 618.628194] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 618.632253] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 618.637789] ? check_preemption_disabled+0x48/0x280 [ 618.642797] ? zap_class+0x640/0x640 [ 618.647810] ? __lock_is_held+0xb5/0x140 [ 618.651543] ? enqueue_hrtimer+0x1a5/0x560 [ 618.655612] __do_softirq+0x308/0xb7e [ 618.659839] ? find_held_lock+0x36/0x1c0 [ 618.663726] ? __irqentry_text_end+0x1f9658/0x1f9658 [ 618.667786] ? clockevents_program_event+0x158/0x370 [ 618.672905] ? irq_exit+0xbd/0x1c0 [ 618.678013] ? lock_downgrade+0x900/0x900 [ 618.681577] ? smp_apic_timer_interrupt+0x1cb/0x760 [ 618.685863] ? zap_class+0x640/0x640 [ 618.690892] ? smp_reschedule_interrupt+0x109/0x650 [ 618.694604] ? print_usage_bug+0xc0/0xc0 [ 618.699731] ? smp_call_function_single_interrupt+0x650/0x650 [ 618.703838] ? trace_hardirqs_on+0x310/0x310 [ 618.709832] ? ret_from_intr+0xb/0x1e [ 618.714236] ? kvm_clock_read+0x18/0x30 [ 618.718053] ? trace_hardirqs_off_caller+0xbb/0x310 [ 618.722022] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 618.727031] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 618.732060] ? ktime_get+0x2c1/0x400 [ 618.736911] ? trace_hardirqs_on_caller+0x310/0x310 [ 618.740622] ? zap_class+0x640/0x640 [ 618.745634] ? task_prio+0x50/0x50 [ 618.749370] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 618.752919] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 618.758567] ? check_preemption_disabled+0x48/0x280 [ 618.764281] ? check_preemption_disabled+0x48/0x280 [ 618.769321] ? __lock_is_held+0xb5/0x140 [ 618.774332] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 618.778394] __do_softirq+0x308/0xb7e [ 618.783246] ? ip6_finish_output2+0xcbc/0x2940 [ 618.787051] ? __irqentry_text_end+0x1f9658/0x1f9658 [ 618.791625] do_softirq_own_stack+0x2a/0x40 [ 618.796727] ? irq_exit+0xbd/0x1c0 [ 618.801055] [ 618.804632] ? smp_apic_timer_interrupt+0x1cb/0x760 [ 618.806964] do_softirq.part.14+0x126/0x160 [ 618.811976] ? smp_call_function_single_interrupt+0x650/0x650 [ 618.816312] __local_bh_enable_ip+0x21d/0x260 [ 618.822209] ? ret_from_intr+0xb/0x1e [ 618.826717] ip6_finish_output2+0xcef/0x2940 [ 618.830557] ? trace_hardirqs_off_caller+0xbb/0x310 [ 618.834960] ? ip6_copy_metadata+0xe30/0xe30 [ 618.839973] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 618.844376] ? ip6_mtu+0x39c/0x520 [ 618.849304] ? trace_hardirqs_on_caller+0x310/0x310 [ 618.852840] ? lock_downgrade+0x900/0x900 [ 618.857958] ? task_prio+0x50/0x50 [ 618.862212] ? check_preemption_disabled+0x48/0x280 [ 618.865847] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 618.870862] ? zap_class+0x640/0x640 [ 618.876397] ? check_preemption_disabled+0x48/0x280 [ 618.880104] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 618.885122] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 618.890567] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 618.895432] ? ip6_finish_output2+0xcbc/0x2940 [ 618.900965] ? __lock_is_held+0xb5/0x140 [ 618.905557] do_softirq_own_stack+0x2a/0x40 [ 618.909619] ip6_finish_output+0x58c/0xc60 [ 618.914044] [ 618.918326] ? ip6_finish_output+0x58c/0xc60 [ 618.920561] do_softirq.part.14+0x126/0x160 [ 618.924974] ip6_output+0x232/0x9d0 [ 618.929293] __local_bh_enable_ip+0x21d/0x260 [ 618.932978] ? ip6_finish_output+0xc60/0xc60 [ 618.937471] ip6_finish_output2+0xcef/0x2940 [ 618.941879] ? ip6_fragment+0x38e0/0x38e0 [ 618.946287] ? ip6_copy_metadata+0xe30/0xe30 [ 618.950428] ? __lock_is_held+0xb5/0x140 [ 618.954831] ? ip6_mtu+0x39c/0x520 [ 618.958885] ip6_xmit+0xf1c/0x2510 [ 618.962428] ? lock_downgrade+0x900/0x900 [ 618.966004] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 618.970184] ? check_preemption_disabled+0x48/0x280 [ 618.975580] ? ip6_finish_output2+0x2940/0x2940 [ 618.980596] ? zap_class+0x640/0x640 [ 618.985261] ? inet6_csk_route_socket+0x704/0x1020 [ 618.988997] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 618.993947] ? ip6_append_data+0x2d0/0x2d0 [ 618.999218] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 619.003553] ? lock_acquire+0x1ed/0x520 [ 619.009098] ? __lock_is_held+0xb5/0x140 [ 619.013064] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 619.017140] ip6_finish_output+0x58c/0xc60 [ 619.022673] ? check_preemption_disabled+0x48/0x280 [ 619.026907] ? ip6_finish_output+0x58c/0xc60 [ 619.031931] inet6_csk_xmit+0x375/0x630 [ 619.036325] ip6_output+0x232/0x9d0 [ 619.040304] ? inet6_csk_update_pmtu+0x190/0x190 [ 619.043930] ? ip6_finish_output+0xc60/0xc60 [ 619.048686] ? __skb_checksum+0x920/0x920 [ 619.053089] ? ip6_fragment+0x38e0/0x38e0 [ 619.057355] ? memset+0x31/0x40 [ 619.061780] ? __lock_is_held+0xb5/0x140 [ 619.065100] ? skb_send_sock+0x50/0x50 [ 619.069158] ip6_xmit+0xf1c/0x2510 [ 619.073050] ? reqsk_fastopen_remove+0x660/0x660 [ 619.076593] ? ip6_finish_output2+0x2940/0x2940 [ 619.081350] ? dccp_v6_send_check+0x2a8/0x3f0 [ 619.086011] ? retint_kernel+0x2d/0x2d [ 619.090521] dccp_transmit_skb+0x98c/0x12e0 [ 619.094403] ? trace_hardirqs_on_caller+0xc0/0x310 [ 619.098719] dccp_send_ack+0x1d9/0x360 [ 619.103646] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 619.107750] dccp_rcv_state_process+0x152e/0x1b7e [ 619.112566] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 619.117521] ? dccp_sample_rtt+0xe0/0xe0 [ 619.122988] ? trace_hardirqs_on_caller+0xc0/0x310 [ 619.127045] ? trace_hardirqs_on+0xbd/0x310 [ 619.131974] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 619.136314] ? _raw_spin_unlock_bh+0x30/0x40 [ 619.141067] ? ip6_append_data+0x2d0/0x2d0 [ 619.145488] ? trace_hardirqs_off_caller+0x310/0x310 [ 619.149745] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 619.154938] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 619.160642] ? check_preemption_disabled+0x48/0x280 [ 619.166198] dccp_v6_do_rcv+0x271/0xbf0 [ 619.171243] inet6_csk_xmit+0x375/0x630 [ 619.175307] __release_sock+0x12f/0x3a0 [ 619.179332] ? inet6_csk_update_pmtu+0x190/0x190 [ 619.183301] release_sock+0xad/0x2c0 [ 619.188076] ? __skb_checksum+0x920/0x920 [ 619.191825] ? __release_sock+0x3a0/0x3a0 [ 619.196083] ? memset+0x31/0x40 [ 619.200225] ? find_held_lock+0x36/0x1c0 [ 619.203575] ? skb_send_sock+0x50/0x50 [ 619.207640] __inet_stream_connect+0x641/0x1150 [ 619.211560] ? reqsk_fastopen_remove+0x660/0x660 [ 619.216248] ? inet_dgram_connect+0x2e0/0x2e0 [ 619.221000] ? dccp_v6_send_check+0x2a8/0x3f0 [ 619.225521] ? __init_waitqueue_head+0x150/0x150 [ 619.230076] dccp_transmit_skb+0x98c/0x12e0 [ 619.234991] ? trace_hardirqs_off_caller+0x310/0x310 [ 619.239307] dccp_send_ack+0x1d9/0x360 [ 619.244408] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 619.248289] dccp_rcv_state_process+0x152e/0x1b7e [ 619.253834] ? check_preemption_disabled+0x48/0x280 [ 619.258702] ? dccp_sample_rtt+0xe0/0xe0 [ 619.263714] ? lock_sock_nested+0x9a/0x120 [ 619.267775] ? trace_hardirqs_on+0xbd/0x310 [ 619.272002] ? lock_sock_nested+0x9a/0x120 [ 619.276389] ? _raw_spin_unlock_bh+0x30/0x40 [ 619.280622] ? __local_bh_enable_ip+0x160/0x260 [ 619.285023] ? trace_hardirqs_off_caller+0x310/0x310 [ 619.285041] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 619.289720] inet_stream_connect+0x58/0xa0 [ 619.294938] dccp_v6_do_rcv+0x271/0xbf0 [ 619.300471] __sys_connect+0x37d/0x4c0 [ 619.304705] __release_sock+0x12f/0x3a0 [ 619.308676] ? __sys_bind+0x1d1/0x440 [ 619.312566] release_sock+0xad/0x2c0 [ 619.316553] ? __ia32_sys_accept+0xb0/0xb0 [ 619.320405] ? __release_sock+0x3a0/0x3a0 [ 619.324114] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 619.328379] ? find_held_lock+0x36/0x1c0 [ 619.332540] ? sockfd_lookup_light+0xc5/0x160 [ 619.338103] __inet_stream_connect+0x641/0x1150 [ 619.342188] ? do_syscall_64+0x9a/0x820 [ 619.346701] ? inet_dgram_connect+0x2e0/0x2e0 [ 619.351364] ? do_syscall_64+0x9a/0x820 [ 619.355332] ? __init_waitqueue_head+0x150/0x150 [ 619.355350] ? trace_hardirqs_off_caller+0x310/0x310 [ 619.359848] ? lockdep_hardirqs_on+0x3bb/0x5b0 [ 619.363853] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 619.368606] ? trace_hardirqs_on+0xbd/0x310 [ 619.373710] ? check_preemption_disabled+0x48/0x280 [ 619.378400] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 619.384040] ? lock_sock_nested+0x9a/0x120 [ 619.388363] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 619.393375] ? lock_sock_nested+0x9a/0x120 [ 619.398908] ? trace_hardirqs_off_caller+0x310/0x310 [ 619.403165] ? __local_bh_enable_ip+0x160/0x260 [ 619.408544] __x64_sys_connect+0x73/0xb0 [ 619.412778] inet_stream_connect+0x58/0xa0 [ 619.417886] do_syscall_64+0x1b9/0x820 [ 619.422692] __sys_connect+0x37d/0x4c0 [ 619.426750] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 619.430979] ? __ia32_sys_accept+0xb0/0xb0 [ 619.434860] ? syscall_return_slowpath+0x5e0/0x5e0 [ 619.438741] ? write_comp_data+0x22/0x70 [ 619.444103] ? trace_hardirqs_on_caller+0x310/0x310 [ 619.448466] ? do_syscall_64+0x9a/0x820 [ 619.453393] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 619.457450] ? do_syscall_64+0x9a/0x820 [ 619.462571] ? post_copy_siginfo_from_user.isra.25.part.26+0x250/0x250 [ 619.466560] ? lockdep_hardirqs_on+0x3bb/0x5b0 [ 619.471575] ? __switch_to_asm+0x40/0x70 [ 619.475552] ? trace_hardirqs_on+0xbd/0x310 [ 619.482212] ? __switch_to_asm+0x34/0x70 [ 619.486791] ? move_addr_to_kernel+0x70/0x70 [ 619.490847] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 619.495164] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 619.499224] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 619.503733] ? trace_hardirqs_off_caller+0x310/0x310 [ 619.508570] RIP: 0033:0x4466c9 [ 619.513930] __x64_sys_connect+0x73/0xb0 [ 619.519141] Code: e8 0c e8 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b 08 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 619.524278] do_syscall_64+0x1b9/0x820 [ 619.527460] RSP: 002b:00007f3d93e8dda8 EFLAGS: 00000297 ORIG_RAX: 000000000000002a [ 619.531617] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 619.550611] RAX: ffffffffffffffda RBX: 00000000006dbc68 RCX: 00000000004466c9 [ 619.554526] ? syscall_return_slowpath+0x5e0/0x5e0 [ 619.562222] RDX: 000000000000001c RSI: 0000000020419000 RDI: 0000000000000006 [ 619.567607] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 619.574982] RBP: 00000000006dbc60 R08: 0000000000000000 R09: 0000000000000000 [ 619.579915] ? trace_hardirqs_on_caller+0x310/0x310 [ 619.587188] R10: 0000000000000000 R11: 0000000000000297 R12: 00000000006dbc6c [ 619.592055] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 619.599318] R13: 616e732f7665642f R14: 0100000000000000 R15: 00000000006dbd4c [ 619.604337] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 619.611604] [ 619.616627] ? prepare_exit_to_usermode+0x291/0x3b0 [ 619.623890] Allocated by task 6018: [ 619.629429] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 619.631056] save_stack+0x43/0xd0 [ 619.636172] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 619.639818] kasan_kmalloc+0xc7/0xe0 [ 619.644768] RIP: 0033:0x4466c9 [ 619.648228] kasan_slab_alloc+0x12/0x20 [ 619.653408] Code: e8 0c e8 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b 08 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 619.657127] kmem_cache_alloc+0x12e/0x730 [ 619.660321] RSP: 002b:00007f3d93ecfda8 EFLAGS: 00000297 ORIG_RAX: 000000000000002a [ 619.664293] ccid_new+0x25b/0x3e0 [ 619.683202] RAX: ffffffffffffffda RBX: 00000000006dbc48 RCX: 00000000004466c9 [ 619.687347] dccp_hdlr_ccid+0x27/0x150 [ 619.695080] RDX: 000000000000001c RSI: 0000000020419000 RDI: 0000000000000006 [ 619.698547] __dccp_feat_activate+0x188/0x280 [ 619.705823] RBP: 00000000006dbc40 R08: 0000000000000000 R09: 0000000000000000 [ 619.709707] dccp_feat_activate_values+0x3c1/0x80a [ 619.717076] R10: 0000000000000000 R11: 0000000000000297 R12: 00000000006dbc4c [ 619.721572] dccp_rcv_state_process+0x1320/0x1b7e [ 619.728856] R13: 616e732f7665642f R14: 0100000000000000 R15: 00000000006dbd4c [ 619.733786] dccp_v6_do_rcv+0x271/0xbf0 [ 619.741186] Modules linked in: [ 619.746036] __release_sock+0x12f/0x3a0 [ 619.753313] CR2: ffff8881c17d2e80 [ 619.757291] release_sock+0xad/0x2c0 [ 619.760474] ---[ end trace b846078fc75beec3 ]--- [ 619.764471] __inet_stream_connect+0x641/0x1150 [ 619.767933] RIP: 0010:0xffff8881c17d2e80 [ 619.771645] inet_stream_connect+0x58/0xa0 [ 619.776395] Code: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 <40> e4 fe d1 81 88 ff ff 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 619.781059] __sys_connect+0x37d/0x4c0 [ 619.785109] RSP: 0018:ffff8881dae06ba8 EFLAGS: 00010206 [ 619.789344] __x64_sys_connect+0x73/0xb0 [ 619.808241] RAX: ffff8881b381e180 RBX: ffff8881c1894b80 RCX: ffffffff873face6 [ 619.812131] do_syscall_64+0x1b9/0x820 [ 619.817518] RDX: 0000000000000100 RSI: ffffffff873fac83 RDI: ffff8881b2fff440 [ 619.821583] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 619.828861] RBP: ffff8881dae06bd0 R08: ffff8881b381e180 R09: 0000000000000000 [ 619.832738] [ 619.840012] R10: ffffed103b5c5b5f R11: ffff8881dae2dafb R12: ffff8881d21564c0 [ 619.845197] Freed by task 6033: [ 619.852470] R13: ffff8881c17d2e80 R14: ffff8881b2fff440 R15: 0000000000000001 [ 619.854100] save_stack+0x43/0xd0 [ 619.861409] FS: 00007f3d93ed0700(0000) GS:ffff8881dae00000(0000) knlGS:0000000000000000 [ 619.864705] __kasan_slab_free+0x102/0x150 [ 619.871970] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 619.875487] kasan_slab_free+0xe/0x10 [ 619.883733] CR2: ffff8881c17d2e80 CR3: 00000001c15b8000 CR4: 00000000001406f0 [ 619.887969] kmem_cache_free+0x83/0x290 [ 619.893843] Kernel panic - not syncing: Fatal exception in interrupt [ 619.897664] ccid_hc_tx_delete+0xc3/0x100 [ 619.919650] dccp_hdlr_ccid+0x7d/0x150 [ 619.923570] __dccp_feat_activate+0x188/0x280 [ 619.928127] dccp_feat_activate_values+0x3c1/0x80a [ 619.933059] dccp_create_openreq_child+0x47a/0x630 [ 619.937995] dccp_v6_request_recv_sock+0x278/0x2020 [ 619.943033] dccp_check_req+0x47d/0x6d0 [ 619.947019] dccp_v6_rcv+0x874/0x1ce9 [ 619.950847] ip6_input_finish+0x3fc/0x1aa0 [ 619.955101] ip6_input+0xe9/0x600 [ 619.958559] ip6_rcv_finish+0x17a/0x330 [ 619.962608] ipv6_rcv+0x115/0x640 [ 619.966098] __netif_receive_skb_one_core+0x14d/0x200 [ 619.971304] __netif_receive_skb+0x2c/0x1e0 [ 619.975631] process_backlog+0x24e/0x7a0 [ 619.979697] net_rx_action+0x7fa/0x19b0 [ 619.983782] __do_softirq+0x308/0xb7e [ 619.987594] [ 619.989227] The buggy address belongs to the object at ffff8881c1894b80 [ 619.989227] which belongs to the cache ccid2_hc_tx_sock of size 1240 [ 620.002412] The buggy address is located 0 bytes inside of [ 620.002412] 1240-byte region [ffff8881c1894b80, ffff8881c1895058) [ 620.014199] The buggy address belongs to the page: [ 620.019136] page:ffffea0007062500 count:1 mapcount:0 mapping:ffff8881c5e53c80 index:0x0 compound_mapcount: 0 [ 620.029120] flags: 0x2fffc0000010200(slab|head) [ 620.033810] raw: 02fffc0000010200 ffffea0007052f08 ffffea0007057f08 ffff8881c5e53c80 [ 620.041700] raw: 0000000000000000 ffff8881c1894080 0000000100000005 0000000000000000 [ 620.049582] page dumped because: kasan: bad access detected [ 620.055292] [ 620.056918] Memory state around the buggy address: [ 620.061862] ffff8881c1894a80: fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc [ 620.069239] ffff8881c1894b00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 620.076607] >ffff8881c1894b80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 620.084079] ^ [ 620.087450] ffff8881c1894c00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 620.094975] ffff8881c1894c80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 620.102366] ================================================================== [ 620.110730] Kernel Offset: disabled [ 620.114364] Rebooting in 86400 seconds..