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-8,10.128.0.54' (ECDSA) to the list of known hosts. 2017/12/06 21:36:51 parsed 1 programs 2017/12/06 21:36:51 executed programs: 0 syzkaller login: [ 33.021604] netlink: 2 bytes leftover after parsing attributes in process `syz-executor0'. [ 33.061827] netlink: 2 bytes leftover after parsing attributes in process `syz-executor0'. [ 33.084611] netlink: 2 bytes leftover after parsing attributes in process `syz-executor1'. [ 33.110684] dccp_close: ABORT with 36 bytes unread [ 33.119524] netlink: 2 bytes leftover after parsing attributes in process `syz-executor0'. [ 33.128208] netlink: 2 bytes leftover after parsing attributes in process `syz-executor1'. [ 33.146530] netlink: 2 bytes leftover after parsing attributes in process `syz-executor6'. [ 33.162672] netlink: 2 bytes leftover after parsing attributes in process `syz-executor0'. [ 33.179120] dccp_close: ABORT with 36 bytes unread [ 33.186487] netlink: 2 bytes leftover after parsing attributes in process `syz-executor6'. [ 33.197292] netlink: 2 bytes leftover after parsing attributes in process `syz-executor1'. [ 33.214538] netlink: 2 bytes leftover after parsing attributes in process `syz-executor5'. [ 33.224122] dccp_close: ABORT with 36 bytes unread [ 33.244198] dccp_close: ABORT with 36 bytes unread [ 33.282462] dccp_close: ABORT with 36 bytes unread [ 33.290687] BUG: please report to dccp@vger.kernel.org => prev = 0, last = 0 at net/dccp/ccids/lib/packet_history.c:425/tfrc_rx_hist_sample_rtt() [ 33.303939] CPU: 0 PID: 3143 Comm: syz-executor0 Not tainted 4.15.0-rc2+ #210 [ 33.309931] dccp_close: ABORT with 36 bytes unread [ 33.316074] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 33.325396] Call Trace: [ 33.327947] [ 33.330070] dump_stack+0x194/0x257 [ 33.333669] ? arch_local_irq_restore+0x53/0x53 [ 33.338309] ? tfrc_rx_handle_loss+0xb38/0x24d0 [ 33.342949] ? __lock_is_held+0xbc/0x140 [ 33.346987] tfrc_rx_hist_sample_rtt+0x407/0x4d0 [ 33.351490] dccp_close: ABORT with 36 bytes unread [ 33.356604] ccid3_hc_rx_packet_recv+0x690/0xea7 [ 33.361329] ? dccp_parse_options+0x3d8/0x1030 [ 33.362894] dccp_close: ABORT with 36 bytes unread [ 33.370774] ? ccid3_hc_tx_packet_recv+0xd20/0xd20 [ 33.375673] dccp_deliver_input_to_ccids+0xd9/0x250 [ 33.380663] dccp_rcv_established+0x88/0xb0 [ 33.384958] dccp_v4_do_rcv+0x12f/0x160 [ 33.385278] dccp_close: ABORT with 36 bytes unread [ 33.393798] __sk_receive_skb+0x33e/0xc20 [ 33.397922] ? sk_free+0x40/0x40 [ 33.401261] ? sock_edemux+0x40/0x40 [ 33.404939] ? skb_send_sock+0x50/0x50 [ 33.408796] ? refcount_sub_and_test+0x115/0x1b0 [ 33.413525] ? dccp_invalid_packet+0x55/0x7c0 [ 33.414668] dccp_close: ABORT with 36 bytes unread [ 33.422887] dccp_v4_rcv+0xef1/0x1c00 [ 33.426668] ? dccp_v4_err+0x1550/0x1550 [ 33.430695] ? find_held_lock+0x39/0x1d0 [ 33.434728] ? lock_release+0xda0/0xda0 [ 33.438671] ? __lock_is_held+0xbc/0x140 [ 33.442713] ip_local_deliver_finish+0x2e2/0xba0 [ 33.447441] ? inet_del_offload+0x40/0x40 [ 33.451565] ip_local_deliver+0x1ce/0x6e0 [ 33.455679] ? ip_call_ra_chain+0x6d0/0x6d0 [ 33.459981] ? __update_load_avg_se.isra.27+0x56a/0x7c0 [ 33.465312] ? __update_load_avg_se.isra.27+0x56a/0x7c0 [ 33.470654] ip_rcv_finish+0x887/0x19a0 [ 33.474604] ? ip_local_deliver_finish+0xba0/0xba0 [ 33.479506] ? lock_downgrade+0x980/0x980 [ 33.483626] ? ip_rcv+0xc80/0x1820 [ 33.487142] ? lock_release+0xda0/0xda0 [ 33.491086] ? __lock_is_held+0xbc/0x140 [ 33.495126] ip_rcv+0xc3f/0x1820 [ 33.498465] ? ip_local_deliver+0x6e0/0x6e0 [ 33.502764] ? __lock_is_held+0xbc/0x140 [ 33.506803] ? ip_local_deliver+0x6e0/0x6e0 [ 33.511109] __netif_receive_skb_core+0x1a3e/0x3450 [ 33.516097] ? update_blocked_averages+0x1b60/0x1b60 [ 33.521174] ? nf_ingress+0x9f0/0x9f0 [ 33.524940] ? check_noncircular+0x20/0x20 [ 33.529144] ? check_preempt_wakeup+0x426/0xb20 [ 33.533793] ? debug_check_no_locks_freed+0x3d0/0x3d0 [ 33.538948] ? find_held_lock+0x39/0x1d0 [ 33.542986] ? lock_downgrade+0x980/0x980 [ 33.547108] ? rcu_read_lock_sched_held+0x108/0x120 [ 33.552095] ? ttwu_do_wakeup+0x523/0x710 [ 33.556215] ? check_noncircular+0x20/0x20 [ 33.560415] ? check_noncircular+0x20/0x20 [ 33.564617] ? do_raw_spin_trylock+0x190/0x190 [ 33.569167] ? do_raw_spin_trylock+0x190/0x190 [ 33.573725] ? _raw_spin_unlock_irqrestore+0xa6/0xba [ 33.578800] ? find_held_lock+0x39/0x1d0 [ 33.582839] ? print_usage_bug+0x3f0/0x3f0 [ 33.587043] ? lock_acquire+0x1d5/0x580 [ 33.590981] ? process_backlog+0x1ab/0x740 [ 33.595188] ? lock_release+0xda0/0xda0 [ 33.599140] __netif_receive_skb+0x2c/0x1b0 [ 33.603428] ? __netif_receive_skb+0x2c/0x1b0 [ 33.607892] process_backlog+0x203/0x740 [ 33.611919] ? mark_held_locks+0xb2/0x100 [ 33.616041] net_rx_action+0x792/0x1910 [ 33.619994] ? napi_complete_done+0x6c0/0x6c0 [ 33.624456] ? mark_held_locks+0xb2/0x100 [ 33.628576] ? cpu_needs_another_gp+0x69e/0x8d0 [ 33.633214] ? check_noncircular+0x20/0x20 [ 33.637418] ? print_usage_bug+0x3f0/0x3f0 [ 33.641624] ? synchronize_rcu_expedited+0x10/0x10 [ 33.646521] ? rcu_accelerate_cbs+0x196/0x970 [ 33.650989] ? lock_release+0xda0/0xda0 [ 33.654937] ? __lock_is_held+0xbc/0x140 [ 33.658977] ? rcu_read_lock_sched_held+0x108/0x120 [ 33.663961] ? rcu_process_callbacks+0x3a0/0x17d0 [ 33.668783] ? note_gp_changes+0x650/0x650 [ 33.672995] ? __lock_is_held+0xbc/0x140 [ 33.677033] ? check_noncircular+0x20/0x20 [ 33.681236] ? print_usage_bug+0x3f0/0x3f0 [ 33.685448] ? rebalance_domains+0xcc0/0xcc0 [ 33.689826] ? do_timer+0x50/0x50 [ 33.693253] ? __lock_is_held+0xbc/0x140 [ 33.697293] __do_softirq+0x29d/0xbb2 [ 33.701059] ? task_prio+0x40/0x40 [ 33.704574] ? __irqentry_text_end+0x4/0x4 [ 33.708790] ? smp_reschedule_interrupt+0xe6/0x670 [ 33.713692] ? smp_thermal_interrupt+0x700/0x700 [ 33.718414] ? _raw_spin_lock+0x32/0x40 [ 33.722456] ? handle_edge_irq+0x2b4/0x7c0 [ 33.726658] ? task_prio+0x40/0x40 [ 33.730174] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 33.734985] ? tick_nohz_idle_enter+0x120/0x220 [ 33.739624] do_softirq_own_stack+0x2a/0x40 [ 33.743911] [ 33.746127] do_softirq.part.19+0x14d/0x190 [ 33.750421] ? ip_finish_output2+0x87a/0x1460 [ 33.754882] __local_bh_enable_ip+0x1ee/0x230 [ 33.759347] ip_finish_output2+0x8ad/0x1460 [ 33.763634] ? check_noncircular+0x20/0x20 [ 33.767840] ? dst_output+0x140/0x140 [ 33.771610] ? check_noncircular+0x20/0x20 [ 33.775817] ? ip_route_input_noref+0x1e0/0x1e0 [ 33.780456] ? xfrm_lookup+0x71a/0x23f0 [ 33.784400] ? ipv4_mtu+0x28c/0x3d0 [ 33.788001] ? __lock_is_held+0xbc/0x140 [ 33.792041] ip_finish_output+0x85e/0xd10 [ 33.796154] ? ip_finish_output+0x85e/0xd10 [ 33.800443] ? ip_fragment.constprop.49+0x200/0x200 [ 33.805437] ? nf_hook_slow+0xd3/0x1a0 [ 33.809297] ip_output+0x1cc/0x860 [ 33.812807] ? ip_mc_output+0x1350/0x1350 [ 33.816934] ? ip_fragment.constprop.49+0x200/0x200 [ 33.821925] ip_local_out+0x95/0x160 [ 33.825613] ip_queue_xmit+0x8c6/0x18e0 [ 33.829561] ? ip_build_and_send_pkt+0xc30/0xc30 [ 33.834284] ? skb_send_sock+0x50/0x50 [ 33.838136] ? reqsk_fastopen_remove+0x581/0x610 [ 33.842860] ? dccp_insert_option_padding+0xad/0xd0 [ 33.847848] ? dccp_insert_options+0x20f/0xcf0 [ 33.852408] ? dccp_v4_send_check+0x181/0x3b0 [ 33.856879] dccp_transmit_skb+0x9ac/0x10f0 [ 33.861176] dccp_xmit_packet+0x20f/0x730 [ 33.865293] ? dccp_send_ack+0x350/0x350 [ 33.869322] ? ccid3_hc_tx_send_packet+0x2de/0x840 [ 33.874223] dccp_write_xmit+0x17d/0x1d0 [ 33.878254] dccp_sendmsg+0x6d0/0xa80 [ 33.882024] ? lock_downgrade+0x980/0x980 [ 33.886140] ? avc_has_perm+0xd0/0x680 [ 33.889997] ? compat_dccp_getsockopt+0x70/0x70 [ 33.894631] ? sock_has_perm+0x29c/0x400 [ 33.898662] ? selinux_secmark_relabel_packet+0xc0/0xc0 [ 33.903993] ? lock_release+0xda0/0xda0 [ 33.907943] inet_sendmsg+0x11f/0x5e0 [ 33.911712] ? inet_recvmsg+0x5f0/0x5f0 [ 33.915654] ? selinux_socket_sendmsg+0x36/0x40 [ 33.920289] ? security_socket_sendmsg+0x89/0xb0 [ 33.925011] ? inet_recvmsg+0x5f0/0x5f0 [ 33.928956] sock_sendmsg+0xca/0x110 [ 33.932638] sock_write_iter+0x320/0x5e0 [ 33.936670] ? sock_sendmsg+0x110/0x110 [ 33.940623] ? iov_iter_init+0xaf/0x1d0 [ 33.944568] __vfs_write+0x68a/0x970 [ 33.948251] ? kernel_read+0x120/0x120 [ 33.952103] ? bpf_fd_pass+0x280/0x280 [ 33.955964] ? _cond_resched+0x14/0x30 [ 33.959823] ? selinux_file_permission+0x82/0x460 [ 33.964643] ? rw_verify_area+0xe5/0x2b0 [ 33.968674] ? __fdget_raw+0x20/0x20 [ 33.972360] vfs_write+0x18f/0x510 [ 33.975870] SyS_write+0xef/0x220 [ 33.979292] ? SyS_read+0x220/0x220 [ 33.982884] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 33.987868] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 33.992598] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 33.997321] RIP: 0033:0x452a39 [ 34.000477] RSP: 002b:00007f550aae2c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000001 [ 34.008149] RAX: ffffffffffffffda RBX: 00007f550aae3700 RCX: 0000000000452a39 [ 34.015386] RDX: 000000000000005a RSI: 000000002077f000 RDI: 0000000000000005 [ 34.022622] RBP: 00007ffc255caf30 R08: 0000000000000000 R09: 0000000000000000 [ 34.029861] R10: 0000000000000000 R11: 0000000000000212 R12: 0000000000000000 [ 34.037096] R13: 00007ffc255caeaf R14: 00007f550aae39c0 R15: 000000000000000a [ 34.333066] BUG: please report to dccp@vger.kernel.org => prev = 0, last = 0 at net/dccp/ccids/lib/packet_history.c:425/tfrc_rx_hist_sample_rtt() [ 34.346347] CPU: 1 PID: 3225 Comm: syz-executor3 Not tainted 4.15.0-rc2+ #210 [ 34.353600] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 34.362932] Call Trace: [ 34.365494] [ 34.367621] dump_stack+0x194/0x257 [ 34.371226] ? arch_local_irq_restore+0x53/0x53 [ 34.375881] ? tfrc_rx_handle_loss+0xb38/0x24d0 [ 34.380532] ? __lock_is_held+0xbc/0x140 [ 34.384574] tfrc_rx_hist_sample_rtt+0x407/0x4d0 [ 34.389310] ccid3_hc_rx_packet_recv+0x690/0xea7 [ 34.394046] ? dccp_parse_options+0x3d8/0x1030 [ 34.398614] ? ccid3_hc_tx_packet_recv+0xd20/0xd20 [ 34.403519] dccp_deliver_input_to_ccids+0xd9/0x250 [ 34.408521] dccp_rcv_established+0x88/0xb0 [ 34.412824] dccp_v4_do_rcv+0x12f/0x160 [ 34.416786] __sk_receive_skb+0x33e/0xc20 [ 34.420935] ? sk_free+0x40/0x40 [ 34.424294] ? sock_edemux+0x40/0x40 [ 34.427996] ? skb_send_sock+0x50/0x50 [ 34.431879] ? refcount_sub_and_test+0x115/0x1b0 [ 34.436630] ? dccp_invalid_packet+0x55/0x7c0 [ 34.441125] dccp_v4_rcv+0xef1/0x1c00 [ 34.444940] ? dccp_v4_err+0x1550/0x1550 [ 34.448989] ? find_held_lock+0x39/0x1d0 [ 34.453038] ? lock_release+0xda0/0xda0 [ 34.457003] ? __lock_is_held+0xbc/0x140 [ 34.461058] ip_local_deliver_finish+0x2e2/0xba0 [ 34.463120] BUG: please report to dccp@vger.kernel.org => prev = 0, last = 0 at net/dccp/ccids/lib/packet_history.c:425/tfrc_rx_hist_sample_rtt() [ 34.478963] ? inet_del_offload+0x40/0x40 [ 34.483113] ip_local_deliver+0x1ce/0x6e0 [ 34.487242] ? ip_call_ra_chain+0x6d0/0x6d0 [ 34.491552] ? print_usage_bug+0x3f0/0x3f0 [ 34.495783] ip_rcv_finish+0x887/0x19a0 [ 34.499757] ? ip_local_deliver_finish+0xba0/0xba0 [ 34.504674] ? lock_downgrade+0x980/0x980 [ 34.508803] ? ip_rcv+0xc80/0x1820 [ 34.512327] ? debug_check_no_locks_freed+0x3d0/0x3d0 [ 34.517494] ? lock_release+0xda0/0xda0 [ 34.521447] ? __lock_is_held+0xbc/0x140 [ 34.525500] ip_rcv+0xc3f/0x1820 [ 34.528859] ? ip_local_deliver+0x6e0/0x6e0 [ 34.533160] ? rb_insert_color+0x1580/0x1580 [ 34.537550] ? print_usage_bug+0x3f0/0x3f0 [ 34.541778] ? __lock_is_held+0xbc/0x140 [ 34.545841] ? ip_local_deliver+0x6e0/0x6e0 [ 34.550137] __netif_receive_skb_core+0x1a3e/0x3450 [ 34.555131] ? __lock_acquire+0x6e9/0x47f0 [ 34.559348] ? nf_ingress+0x9f0/0x9f0 [ 34.563146] ? debug_check_no_locks_freed+0x3d0/0x3d0 [ 34.568311] ? check_noncircular+0x20/0x20 [ 34.572532] ? __lock_acquire+0x6e9/0x47f0 [ 34.576760] ? __lock_is_held+0xbc/0x140 [ 34.580807] ? check_noncircular+0x20/0x20 [ 34.585020] ? __lock_is_held+0xbc/0x140 [ 34.589067] ? find_held_lock+0x39/0x1d0 [ 34.593109] ? print_usage_bug+0x3f0/0x3f0 [ 34.597321] ? lock_acquire+0x1d5/0x580 [ 34.601269] ? process_backlog+0x1ab/0x740 [ 34.605484] ? lock_release+0xda0/0xda0 [ 34.609431] ? lock_release+0xda0/0xda0 [ 34.613391] __netif_receive_skb+0x2c/0x1b0 [ 34.617691] ? __netif_receive_skb+0x2c/0x1b0 [ 34.622174] process_backlog+0x203/0x740 [ 34.626212] ? mark_held_locks+0xb2/0x100 [ 34.630343] net_rx_action+0x792/0x1910 [ 34.634304] ? napi_complete_done+0x6c0/0x6c0 [ 34.638793] ? rcu_read_lock_sched_held+0x108/0x120 [ 34.643795] ? rcu_process_callbacks+0x3a0/0x17d0 [ 34.648625] ? del_timer_sync+0x240/0x240 [ 34.652748] ? note_gp_changes+0x650/0x650 [ 34.656967] ? timerqueue_add+0x1e9/0x280 [ 34.661100] ? enqueue_hrtimer+0x162/0x490 [ 34.665309] ? find_held_lock+0x39/0x1d0 [ 34.669346] ? check_noncircular+0x20/0x20 [ 34.673553] ? print_usage_bug+0x3f0/0x3f0 [ 34.677768] ? lock_downgrade+0x980/0x980 [ 34.681899] ? lock_acquire+0x1d5/0x580 [ 34.685858] ? clockevents_program_event+0x163/0x2e0 [ 34.690941] ? lock_downgrade+0x980/0x980 [ 34.695071] ? __lock_is_held+0xbc/0x140 [ 34.699115] ? check_noncircular+0x20/0x20 [ 34.703324] ? print_usage_bug+0x3f0/0x3f0 [ 34.707544] ? __irqentry_text_end+0x4/0x4 [ 34.711763] ? do_timer+0x50/0x50 [ 34.715217] ? __lock_is_held+0xbc/0x140 [ 34.719267] __do_softirq+0x29d/0xbb2 [ 34.723047] ? task_prio+0x40/0x40 [ 34.726578] ? __irqentry_text_end+0x4/0x4 [ 34.730793] ? irq_exit+0x103/0x210 [ 34.734401] ? smp_apic_timer_interrupt+0x16b/0x700 [ 34.739387] ? smp_reschedule_interrupt+0xe6/0x670 [ 34.744290] ? smp_call_function_single_interrupt+0x640/0x640 [ 34.750147] ? _raw_spin_lock+0x32/0x40 [ 34.754109] ? handle_edge_irq+0x2b4/0x7c0 [ 34.758318] ? task_prio+0x40/0x40 [ 34.761843] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 34.766667] do_softirq_own_stack+0x2a/0x40 [ 34.770966] [ 34.773189] do_softirq.part.19+0x14d/0x190 [ 34.777486] ? ip_finish_output2+0x87a/0x1460 [ 34.781955] __local_bh_enable_ip+0x1ee/0x230 [ 34.786426] ip_finish_output2+0x8ad/0x1460 [ 34.790727] ? check_noncircular+0x20/0x20 [ 34.794954] ? dst_output+0x140/0x140 [ 34.798744] ? check_noncircular+0x20/0x20 [ 34.802973] ? ip_route_input_noref+0x1e0/0x1e0 [ 34.807624] ? xfrm_lookup+0x71a/0x23f0 [ 34.811578] ? ipv4_mtu+0x28c/0x3d0 [ 34.815185] ? __lock_is_held+0xbc/0x140 [ 34.819239] ip_finish_output+0x85e/0xd10 [ 34.823362] ? ip_finish_output+0x85e/0xd10 [ 34.827660] ? ip_fragment.constprop.49+0x200/0x200 [ 34.832662] ? nf_hook_slow+0xd3/0x1a0 [ 34.836532] ip_output+0x1cc/0x860 [ 34.840050] ? ip_mc_output+0x1350/0x1350 [ 34.844182] ? ip_fragment.constprop.49+0x200/0x200 [ 34.849181] ip_local_out+0x95/0x160 [ 34.852882] ip_queue_xmit+0x8c6/0x18e0 [ 34.856850] ? ip_build_and_send_pkt+0xc30/0xc30 [ 34.861583] ? skb_send_sock+0x50/0x50 [ 34.865441] ? reqsk_fastopen_remove+0x581/0x610 [ 34.870167] ? dccp_insert_option_padding+0xad/0xd0 [ 34.875180] ? dccp_insert_options+0x20f/0xcf0 [ 34.879743] ? dccp_v4_send_check+0x181/0x3b0 [ 34.884217] dccp_transmit_skb+0x9ac/0x10f0 [ 34.888517] dccp_xmit_packet+0x20f/0x730 [ 34.892640] ? dccp_send_ack+0x350/0x350 [ 34.896684] ? ccid3_hc_tx_send_packet+0x2de/0x840 [ 34.901598] dccp_write_xmit+0x17d/0x1d0 [ 34.905635] dccp_sendmsg+0x6d0/0xa80 [ 34.909408] ? lock_downgrade+0x980/0x980 [ 34.913530] ? avc_has_perm+0xd0/0x680 [ 34.917394] ? compat_dccp_getsockopt+0x70/0x70 [ 34.922032] ? sock_has_perm+0x29c/0x400 [ 34.926070] ? selinux_secmark_relabel_packet+0xc0/0xc0 [ 34.931407] ? lock_release+0xda0/0xda0 [ 34.935367] inet_sendmsg+0x11f/0x5e0 [ 34.939159] ? inet_recvmsg+0x5f0/0x5f0 [ 34.943121] ? selinux_socket_sendmsg+0x36/0x40 [ 34.947781] ? security_socket_sendmsg+0x89/0xb0 [ 34.952517] ? inet_recvmsg+0x5f0/0x5f0 [ 34.956467] sock_sendmsg+0xca/0x110 [ 34.960163] sock_write_iter+0x320/0x5e0 [ 34.964208] ? sock_sendmsg+0x110/0x110 [ 34.968186] ? iov_iter_init+0xaf/0x1d0 [ 34.972153] __vfs_write+0x68a/0x970 [ 34.975855] ? kernel_read+0x120/0x120 [ 34.979723] ? bpf_fd_pass+0x280/0x280 [ 34.983591] ? _cond_resched+0x14/0x30 [ 34.987454] ? selinux_file_permission+0x82/0x460 [ 34.992281] ? rw_verify_area+0xe5/0x2b0 [ 34.996313] ? __fdget_raw+0x20/0x20 [ 35.000009] vfs_write+0x18f/0x510 [ 35.003532] SyS_write+0xef/0x220 [ 35.006959] ? SyS_read+0x220/0x220 [ 35.010558] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 35.015548] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 35.020284] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 35.025018] RIP: 0033:0x452a39 [ 35.028182] RSP: 002b:00007fcec03c2c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000001 [ 35.035861] RAX: ffffffffffffffda RBX: 00007fcec03c3700 RCX: 0000000000452a39 [ 35.043107] RDX: 000000000000005a RSI: 000000002077f000 RDI: 0000000000000005 [ 35.050353] RBP: 00007ffef4f0a5c0 R08: 0000000000000000 R09: 0000000000000000 [ 35.057596] R10: 0000000000000000 R11: 0000000000000212 R12: 0000000000000000 [ 35.064840] R13: 00007ffef4f0a53f R14: 00007fcec03c39c0 R15: 000000000000000a [ 35.072112] CPU: 0 PID: 3258 Comm: syz-executor6 Not tainted 4.15.0-rc2+ #210 [ 35.079391] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 35.088717] Call Trace: [ 35.091271] [ 35.093397] dump_stack+0x194/0x257 [ 35.096999] ? arch_local_irq_restore+0x53/0x53 [ 35.101639] ? tfrc_rx_handle_loss+0xb38/0x24d0 [ 35.106276] ? __lock_is_held+0xbc/0x140 [ 35.110312] tfrc_rx_hist_sample_rtt+0x407/0x4d0 [ 35.115040] ccid3_hc_rx_packet_recv+0x690/0xea7 [ 35.119763] ? dccp_parse_options+0x3d8/0x1030 [ 35.124317] ? ccid3_hc_tx_packet_recv+0xd20/0xd20 [ 35.129215] dccp_deliver_input_to_ccids+0xd9/0x250 [ 35.134211] dccp_rcv_established+0x88/0xb0 [ 35.138502] dccp_v4_do_rcv+0x12f/0x160 [ 35.142446] __sk_receive_skb+0x33e/0xc20 [ 35.146566] ? sk_free+0x40/0x40 [ 35.149905] ? sock_edemux+0x40/0x40 [ 35.153608] ? skb_send_sock+0x50/0x50 [ 35.157464] ? refcount_sub_and_test+0x115/0x1b0 [ 35.162203] ? dccp_invalid_packet+0x55/0x7c0 [ 35.166665] ? check_noncircular+0x20/0x20 [ 35.170881] dccp_v4_rcv+0xef1/0x1c00 [ 35.174664] ? dccp_v4_err+0x1550/0x1550 [ 35.178691] ? find_held_lock+0x39/0x1d0 [ 35.182724] ? lock_release+0xda0/0xda0 [ 35.186667] ? __lock_is_held+0xbc/0x140 [ 35.190709] ip_local_deliver_finish+0x2e2/0xba0 [ 35.195437] ? inet_del_offload+0x40/0x40 [ 35.199560] ip_local_deliver+0x1ce/0x6e0 [ 35.203680] ? ip_call_ra_chain+0x6d0/0x6d0 [ 35.207979] ? update_cfs_rq_load_avg.part.70+0x2d0/0x2d0 [ 35.213485] ? reweight_entity+0x11b0/0x11b0 [ 35.217864] ip_rcv_finish+0x887/0x19a0 [ 35.221814] ? ip_local_deliver_finish+0xba0/0xba0 [ 35.226713] ? lock_downgrade+0x980/0x980 [ 35.230831] ? ip_rcv+0xc80/0x1820 [ 35.234344] ? lock_release+0xda0/0xda0 [ 35.238288] ? __lock_is_held+0xbc/0x140 [ 35.242326] ip_rcv+0xc3f/0x1820 [ 35.245664] ? ip_local_deliver+0x6e0/0x6e0 [ 35.249953] ? enqueue_task_fair+0x3b7/0x2950 [ 35.254421] ? __lock_is_held+0xbc/0x140 [ 35.258456] ? ip_local_deliver+0x6e0/0x6e0 [ 35.262745] __netif_receive_skb_core+0x1a3e/0x3450 [ 35.267739] ? nf_ingress+0x9f0/0x9f0 [ 35.271612] ? find_busiest_group+0xf9/0x1c60 [ 35.276078] ? find_held_lock+0x39/0x1d0 [ 35.280119] ? debug_check_no_locks_freed+0x3d0/0x3d0 [ 35.285289] ? __lock_is_held+0xbc/0x140 [ 35.289330] ? do_raw_spin_trylock+0x190/0x190 [ 35.293883] ? load_balance+0x15a8/0x34c0 [ 35.297999] ? check_noncircular+0x20/0x20 [ 35.302215] ? debug_check_no_locks_freed+0x3d0/0x3d0 [ 35.307388] ? find_held_lock+0x39/0x1d0 [ 35.311424] ? print_usage_bug+0x3f0/0x3f0 [ 35.315629] ? lock_acquire+0x1d5/0x580 [ 35.319570] ? process_backlog+0x1ab/0x740 [ 35.323780] ? lock_release+0xda0/0xda0 [ 35.327734] __netif_receive_skb+0x2c/0x1b0 [ 35.332042] ? __netif_receive_skb+0x2c/0x1b0 [ 35.336523] process_backlog+0x203/0x740 [ 35.340559] ? mark_held_locks+0xb2/0x100 [ 35.344690] net_rx_action+0x792/0x1910 [ 35.348652] ? napi_complete_done+0x6c0/0x6c0 [ 35.353126] ? rebalance_domains+0x396/0xcc0 [ 35.357504] ? _raw_spin_unlock_irq+0x27/0x70 [ 35.361977] ? pick_next_task_fair+0x16b0/0x16b0 [ 35.366703] ? del_timer_sync+0x240/0x240 [ 35.370822] ? timerqueue_add+0x1e9/0x280 [ 35.374944] ? enqueue_hrtimer+0x162/0x490 [ 35.379151] ? find_held_lock+0x39/0x1d0 [ 35.383185] ? run_rebalance_domains+0x381/0x780 [ 35.387912] ? lock_acquire+0x1d5/0x580 [ 35.391854] ? rebalance_domains+0xcc0/0xcc0 [ 35.396239] ? rcu_pm_notify+0xc0/0xc0 [ 35.400102] ? check_noncircular+0x20/0x20 [ 35.404303] ? print_usage_bug+0x3f0/0x3f0 [ 35.408514] ? __irqentry_text_end+0x4/0x4 [ 35.412719] ? do_timer+0x50/0x50 [ 35.416144] ? __lock_is_held+0xbc/0x140 [ 35.420184] __do_softirq+0x29d/0xbb2 [ 35.423952] ? task_prio+0x40/0x40 [ 35.427468] ? __irqentry_text_end+0x4/0x4 [ 35.431670] ? irq_exit+0x103/0x210 [ 35.435266] ? smp_apic_timer_interrupt+0x16b/0x700 [ 35.440248] ? smp_reschedule_interrupt+0xe6/0x670 [ 35.445145] ? smp_call_function_single_interrupt+0x640/0x640 [ 35.450997] ? _raw_spin_lock+0x32/0x40 [ 35.454951] ? handle_edge_irq+0x2b4/0x7c0 [ 35.459154] ? task_prio+0x40/0x40 [ 35.462674] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 35.467490] do_softirq_own_stack+0x2a/0x40 [ 35.471775] [ 35.473979] do_softirq.part.19+0x14d/0x190 [ 35.478269] ? ip_finish_output2+0x87a/0x1460 [ 35.482731] __local_bh_enable_ip+0x1ee/0x230 [ 35.487195] ip_finish_output2+0x8ad/0x1460 [ 35.491502] ? check_noncircular+0x20/0x20 [ 35.495709] ? dst_output+0x140/0x140 [ 35.499476] ? check_noncircular+0x20/0x20 [ 35.503683] ? ip_route_input_noref+0x1e0/0x1e0 [ 35.508326] ? xfrm_lookup+0x71a/0x23f0 [ 35.512272] ? ipv4_mtu+0x28c/0x3d0 [ 35.515872] ? __lock_is_held+0xbc/0x140 [ 35.519912] ip_finish_output+0x85e/0xd10 [ 35.524031] ? ip_finish_output+0x85e/0xd10 [ 35.528326] ? ip_fragment.constprop.49+0x200/0x200 [ 35.533319] ? nf_hook_slow+0xd3/0x1a0 [ 35.537178] ip_output+0x1cc/0x860 [ 35.540688] ? ip_mc_output+0x1350/0x1350 [ 35.544820] ? ip_fragment.constprop.49+0x200/0x200 [ 35.549810] ip_local_out+0x95/0x160 [ 35.553494] ip_queue_xmit+0x8c6/0x18e0 [ 35.557442] ? ip_build_and_send_pkt+0xc30/0xc30 [ 35.562164] ? skb_send_sock+0x50/0x50 [ 35.566022] ? reqsk_fastopen_remove+0x581/0x610 [ 35.570747] ? dccp_insert_option_padding+0xad/0xd0 [ 35.575736] ? dccp_insert_options+0x20f/0xcf0 [ 35.580290] ? dccp_v4_send_check+0x181/0x3b0 [ 35.584758] dccp_transmit_skb+0x9ac/0x10f0 [ 35.589058] dccp_xmit_packet+0x20f/0x730 [ 35.593176] ? dccp_send_ack+0x350/0x350 [ 35.597206] ? ccid3_hc_tx_send_packet+0x2de/0x840 [ 35.602116] dccp_write_xmit+0x17d/0x1d0 [ 35.606149] dccp_sendmsg+0x6d0/0xa80 [ 35.609919] ? lock_downgrade+0x980/0x980 [ 35.614041] ? avc_has_perm+0xd0/0x680 [ 35.617900] ? compat_dccp_getsockopt+0x70/0x70 [ 35.622536] ? sock_has_perm+0x29c/0x400 [ 35.626567] ? selinux_secmark_relabel_packet+0xc0/0xc0 [ 35.631908] ? lock_release+0xda0/0xda0 [ 35.635860] inet_sendmsg+0x11f/0x5e0 [ 35.639631] ? inet_recvmsg+0x5f0/0x5f0 [ 35.643574] ? selinux_socket_sendmsg+0x36/0x40 [ 35.648212] ? security_socket_sendmsg+0x89/0xb0 [ 35.652936] ? inet_recvmsg+0x5f0/0x5f0 [ 35.656881] sock_sendmsg+0xca/0x110 [ 35.660566] sock_write_iter+0x320/0x5e0 [ 35.664597] ? sock_sendmsg+0x110/0x110 [ 35.668551] ? iov_iter_init+0xaf/0x1d0 [ 35.672496] __vfs_write+0x68a/0x970 [ 35.676181] ? kernel_read+0x120/0x120 [ 35.680035] ? bpf_fd_pass+0x280/0x280 [ 35.683893] ? _cond_resched+0x14/0x30 [ 35.687752] ? selinux_file_permission+0x82/0x460 [ 35.692570] ? rw_verify_area+0xe5/0x2b0 [ 35.696601] ? __fdget_raw+0x20/0x20 [ 35.700286] vfs_write+0x18f/0x510 [ 35.703798] SyS_write+0xef/0x220 [ 35.707222] ? SyS_read+0x220/0x220 [ 35.710817] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 35.715801] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 35.720530] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 35.725252] RIP: 0033:0x452a39 [ 35.728408] RSP: 002b:00007ff4ae741c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000001 [ 35.736084] RAX: ffffffffffffffda RBX: 00007ff4ae742700 RCX: 0000000000452a39 [ 35.743323] RDX: 000000000000005a RSI: 000000002077f000 RDI: 0000000000000005 [ 35.750559] RBP: 00007ffe84eb1010 R08: 0000000000000000 R09: 0000000000000000 [ 35.757797] R10: 0000000000000000 R11: 0000000000000212 R12: 0000000000000000 [ 35.765035] R13: 00007ffe84eb0f8f R14: 00007ff4ae7429c0 R15: 000000000000000a [ 35.865316] BUG: please report to dccp@vger.kernel.org => prev = 0, last = 0 at net/dccp/ccids/lib/packet_history.c:425/tfrc_rx_hist_sample_rtt() [ 35.872120] BUG: please report to dccp@vger.kernel.org => prev = 0, last = 0 at net/dccp/ccids/lib/packet_history.c:425/tfrc_rx_hist_sample_rtt() [ 35.872129] CPU: 1 PID: 3287 Comm: syz-executor3 Not tainted 4.15.0-rc2+ #210 [ 35.872133] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 35.872136] Call Trace: [ 35.872139] [ 35.872151] dump_stack+0x194/0x257 [ 35.872164] ? arch_local_irq_restore+0x53/0x53 [ 35.872174] ? tfrc_rx_handle_loss+0xb38/0x24d0 [ 35.872184] ? __lock_is_held+0xbc/0x140 [ 35.872203] tfrc_rx_hist_sample_rtt+0x407/0x4d0 [ 35.872218] ccid3_hc_rx_packet_recv+0x690/0xea7 [ 35.872225] ? dccp_parse_options+0x3d8/0x1030 [ 35.872243] ? ccid3_hc_tx_packet_recv+0xd20/0xd20 [ 35.872252] dccp_deliver_input_to_ccids+0xd9/0x250 [ 35.872265] dccp_rcv_established+0x88/0xb0 [ 35.872276] dccp_v4_do_rcv+0x12f/0x160 [ 35.872291] __sk_receive_skb+0x33e/0xc20 [ 35.872308] ? sk_free+0x40/0x40 [ 35.872321] ? sock_edemux+0x40/0x40 [ 35.872327] ? skb_send_sock+0x50/0x50 [ 35.872350] ? dccp_invalid_packet+0x55/0x7c0 [ 35.872368] dccp_v4_rcv+0xef1/0x1c00 [ 35.872396] ? dccp_v4_err+0x1550/0x1550 [ 35.872401] ? find_held_lock+0x39/0x1d0 [ 35.872414] ? lock_release+0xda0/0xda0 [ 35.872427] ? __lock_is_held+0xbc/0x140 [ 35.872454] ip_local_deliver_finish+0x2e2/0xba0 [ 35.872469] ? inet_del_offload+0x40/0x40 [ 35.872493] ip_local_deliver+0x1ce/0x6e0 [ 35.872504] ? ip_call_ra_chain+0x6d0/0x6d0 [ 35.872521] ? __lock_acquire+0x6e9/0x47f0 [ 35.872528] ? print_usage_bug+0x3f0/0x3f0 [ 35.872539] ? update_cfs_rq_load_avg.part.70+0x2d0/0x2d0 [ 35.872551] ? reweight_entity+0x11b0/0x11b0 [ 35.872564] ip_rcv_finish+0x887/0x19a0 [ 35.872582] ? ip_local_deliver_finish+0xba0/0xba0 [ 35.872597] ? lock_downgrade+0x980/0x980 [ 35.872606] ? ip_rcv+0xc80/0x1820 [ 35.872618] ? debug_check_no_locks_freed+0x3d0/0x3d0 [ 35.872630] ? lock_release+0xda0/0xda0 [ 35.872643] ? __lock_is_held+0xbc/0x140 [ 35.872669] ip_rcv+0xc3f/0x1820 [ 35.872687] ? ip_local_deliver+0x6e0/0x6e0 [ 35.872694] ? rb_insert_color+0x1580/0x1580 [ 35.872719] ? __lock_is_held+0xbc/0x140 [ 35.872739] ? ip_local_deliver+0x6e0/0x6e0 [ 35.872751] __netif_receive_skb_core+0x1a3e/0x3450 [ 35.872774] ? nf_ingress+0x9f0/0x9f0 [ 35.872791] ? lock_release+0xda0/0xda0 [ 35.872821] ? debug_check_no_locks_freed+0x3d0/0x3d0 [ 35.872833] ? rcu_read_unlock+0x35/0x70 [ 35.872841] ? update_curr+0x415/0x9a0 [ 35.872855] ? nohz_balance_exit_idle.part.99+0x70/0x70 [ 35.872874] ? __lock_is_held+0xbc/0x140 [ 35.872890] ? check_noncircular+0x20/0x20 [ 35.872896] ? check_noncircular+0x20/0x20 [ 35.872909] ? update_curr+0x2e6/0x9a0 [ 35.872915] ? __enqueue_entity+0x109/0x1e0 [ 35.872927] ? print_usage_bug+0x3f0/0x3f0 [ 35.872937] ? enqueue_task_fair+0x3b7/0x2950 [ 35.872959] ? find_held_lock+0x39/0x1d0 [ 35.872978] ? print_usage_bug+0x3f0/0x3f0 [ 35.872994] ? lock_acquire+0x1d5/0x580 [ 35.873001] ? process_backlog+0x1ab/0x740 [ 35.873019] ? lock_release+0xda0/0xda0 [ 35.873045] __netif_receive_skb+0x2c/0x1b0 [ 35.873052] ? __netif_receive_skb+0x2c/0x1b0 [ 35.873063] process_backlog+0x203/0x740 [ 35.873069] ? mark_held_locks+0xb2/0x100 [ 35.873096] net_rx_action+0x792/0x1910 [ 35.873125] ? napi_complete_done+0x6c0/0x6c0 [ 35.873131] ? trace_hardirqs_off+0xd/0x10 [ 35.873138] ? _raw_spin_unlock_irqrestore+0xa6/0xba [ 35.873148] ? try_to_wake_up+0xf9/0x1600 [ 35.873173] ? check_noncircular+0x20/0x20 [ 35.873180] ? check_noncircular+0x20/0x20 [ 35.873197] ? lock_acquire+0x1d5/0x580 [ 35.873205] ? __hrtimer_run_queues+0x385/0xe10 [ 35.873223] ? lock_release+0xda0/0xda0 [ 35.873237] ? find_held_lock+0x39/0x1d0 [ 35.873261] ? lock_downgrade+0x980/0x980 [ 35.873270] ? lock_acquire+0x1d5/0x580 [ 35.873278] ? clockevents_program_event+0x163/0x2e0 [ 35.873288] ? lock_downgrade+0x980/0x980 [ 35.873311] ? pvclock_read_flags+0x160/0x160 [ 35.873318] ? find_held_lock+0x39/0x1d0 [ 35.873339] ? check_noncircular+0x20/0x20 [ 35.873349] ? print_usage_bug+0x3f0/0x3f0 [ 35.873361] ? ktime_get_resolution_ns+0x300/0x300 [ 35.873376] ? check_noncircular+0x20/0x20 [ 35.873385] ? do_timer+0x50/0x50 [ 35.873402] ? __lock_is_held+0xbc/0x140 [ 35.873432] __do_softirq+0x29d/0xbb2 [ 35.873437] ? task_prio+0x40/0x40 [ 35.873459] ? __irqentry_text_end+0x4/0x4 [ 35.873466] ? irq_exit+0x103/0x210 [ 35.873474] ? smp_apic_timer_interrupt+0x16b/0x700 [ 35.873481] ? smp_reschedule_interrupt+0xe6/0x670 [ 35.873490] ? smp_call_function_single_interrupt+0x640/0x640 [ 35.873498] ? _raw_spin_lock+0x32/0x40 [ 35.873516] ? handle_edge_irq+0x2b4/0x7c0 [ 35.873524] ? task_prio+0x40/0x40 [ 35.873546] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 35.873565] do_softirq_own_stack+0x2a/0x40 [ 35.873568] [ 35.873576] do_softirq.part.19+0x14d/0x190 [ 35.873583] ? ip_finish_output2+0x87a/0x1460 [ 35.873590] __local_bh_enable_ip+0x1ee/0x230 [ 35.873601] ip_finish_output2+0x8ad/0x1460 [ 35.873610] ? check_noncircular+0x20/0x20 [ 35.873624] ? dst_output+0x140/0x140 [ 35.873632] ? check_noncircular+0x20/0x20 [ 35.873648] ? ip_route_input_noref+0x1e0/0x1e0 [ 35.873657] ? xfrm_lookup+0x71a/0x23f0 [ 35.873672] ? ipv4_mtu+0x28c/0x3d0 [ 35.873690] ? __lock_is_held+0xbc/0x140 [ 35.873716] ip_finish_output+0x85e/0xd10 [ 35.873721] ? ip_finish_output+0x85e/0xd10 [ 35.873733] ? ip_fragment.constprop.49+0x200/0x200 [ 35.873756] ? nf_hook_slow+0xd3/0x1a0 [ 35.873773] ip_output+0x1cc/0x860 [ 35.873785] ? ip_mc_output+0x1350/0x1350 [ 35.873809] ? ip_fragment.constprop.49+0x200/0x200 [ 35.873830] ip_local_out+0x95/0x160 [ 35.873844] ip_queue_xmit+0x8c6/0x18e0 [ 35.873864] ? ip_build_and_send_pkt+0xc30/0xc30 [ 35.873870] ? skb_send_sock+0x50/0x50 [ 35.873876] ? reqsk_fastopen_remove+0x581/0x610 [ 35.873883] ? dccp_insert_option_padding+0xad/0xd0 [ 35.873894] ? dccp_insert_options+0x20f/0xcf0 [ 35.873908] ? dccp_v4_send_check+0x181/0x3b0 [ 35.873923] dccp_transmit_skb+0x9ac/0x10f0 [ 35.873946] dccp_xmit_packet+0x20f/0x730 [ 35.873959] ? dccp_send_ack+0x350/0x350 [ 35.873970] ? ccid3_hc_tx_send_packet+0x2de/0x840 [ 35.873989] dccp_write_xmit+0x17d/0x1d0 [ 35.874003] dccp_sendmsg+0x6d0/0xa80 [ 35.874011] ? lock_downgrade+0x980/0x980 [ 35.874023] ? avc_has_perm+0xd0/0x680 [ 35.874036] ? compat_dccp_getsockopt+0x70/0x70 [ 35.874042] ? sock_has_perm+0x29c/0x400 [ 35.874055] ? selinux_secmark_relabel_packet+0xc0/0xc0 [ 35.874066] ? lock_release+0xda0/0xda0 [ 35.874087] inet_sendmsg+0x11f/0x5e0 [ 35.874102] ? inet_recvmsg+0x5f0/0x5f0 [ 35.874114] ? selinux_socket_sendmsg+0x36/0x40 [ 35.874123] ? security_socket_sendmsg+0x89/0xb0 [ 35.874131] ? inet_recvmsg+0x5f0/0x5f0 [ 35.874143] sock_sendmsg+0xca/0x110 [ 35.874155] sock_write_iter+0x320/0x5e0 [ 35.874168] ? sock_sendmsg+0x110/0x110 [ 35.874193] ? iov_iter_init+0xaf/0x1d0 [ 35.874208] __vfs_write+0x68a/0x970 [ 35.874222] ? kernel_read+0x120/0x120 [ 35.874228] ? bpf_fd_pass+0x280/0x280 [ 35.874243] ? _cond_resched+0x14/0x30 [ 35.874258] ? selinux_file_permission+0x82/0x460 [ 35.874283] ? rw_verify_area+0xe5/0x2b0 [ 35.874289] ? __fdget_raw+0x20/0x20 [ 35.874302] vfs_write+0x18f/0x510 [ 35.874317] SyS_write+0xef/0x220 [ 35.874330] ? SyS_read+0x220/0x220 [ 35.874336] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 35.874346] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 35.874365] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 35.874371] RIP: 0033:0x452a39 [ 35.874375] RSP: 002b:00007fcec03c2c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000001 [ 35.874383] RAX: ffffffffffffffda RBX: 00007fcec03c3700 RCX: 0000000000452a39 [ 35.874387] RDX: 000000000000005a RSI: 000000002077f000 RDI: 0000000000000005 [ 35.874391] RBP: 00007ffef4f0a5c0 R08: 0000000000000000 R09: 0000000000000000 [ 35.874395] R10: 0000000000000000 R11: 0000000000000212 R12: 0000000000000000 [ 35.874399] R13: 00007ffef4f0a53f R14: 00007fcec03c39c0 R15: 000000000000000a [ 35.886410] BUG: please report to dccp@vger.kernel.org => prev = 0, last = 0 at net/dccp/ccids/lib/packet_history.c:425/tfrc_rx_hist_sample_rtt() [ 35.886419] CPU: 1 PID: 3288 Comm: syz-executor5 Not tainted 4.15.0-rc2+ #210 [ 35.886423] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 35.886426] Call Trace: [ 35.886429] [ 35.886440] dump_stack+0x194/0x257 [ 35.886453] ? arch_local_irq_restore+0x53/0x53 [ 35.886462] ? tfrc_rx_handle_loss+0xb38/0x24d0 [ 35.886472] ? __lock_is_held+0xbc/0x140 [ 35.886491] tfrc_rx_hist_sample_rtt+0x407/0x4d0 [ 35.886506] ccid3_hc_rx_packet_recv+0x690/0xea7 [ 35.886514] ? dccp_parse_options+0x3d8/0x1030 [ 35.886531] ? ccid3_hc_tx_packet_recv+0xd20/0xd20 [ 35.886540] dccp_deliver_input_to_ccids+0xd9/0x250 [ 35.886553] dccp_rcv_established+0x88/0xb0 [ 35.886565] dccp_v4_do_rcv+0x12f/0x160 [ 35.886579] __sk_receive_skb+0x33e/0xc20 [ 35.886595] ? sk_free+0x40/0x40 [ 35.886609] ? sock_edemux+0x40/0x40 [ 35.886615] ? skb_send_sock+0x50/0x50 [ 35.886625] ? refcount_sub_and_test+0x115/0x1b0 [ 35.886645] ? dccp_invalid_packet+0x55/0x7c0 [ 35.886662] dccp_v4_rcv+0xef1/0x1c00 [ 35.886691] ? dccp_v4_err+0x1550/0x1550 [ 35.886697] ? find_held_lock+0x39/0x1d0 [ 35.886709] ? lock_release+0xda0/0xda0 [ 35.886722] ? __lock_is_held+0xbc/0x140 [ 35.886749] ip_local_deliver_finish+0x2e2/0xba0 [ 35.886765] ? inet_del_offload+0x40/0x40 [ 35.886789] ip_local_deliver+0x1ce/0x6e0 [ 35.886800] ? ip_call_ra_chain+0x6d0/0x6d0 [ 35.886820] ? print_usage_bug+0x3f0/0x3f0 [ 35.886831] ? update_cfs_rq_load_avg.part.70+0x2d0/0x2d0 [ 35.886844] ? reweight_entity+0x11b0/0x11b0 [ 35.886857] ip_rcv_finish+0x887/0x19a0 [ 35.886875] ? ip_local_deliver_finish+0xba0/0xba0 [ 35.886890] ? lock_downgrade+0x980/0x980 [ 35.886898] ? ip_rcv+0xc80/0x1820 [ 35.886910] ? debug_check_no_locks_freed+0x3d0/0x3d0 [ 35.886922] ? lock_release+0xda0/0xda0 [ 35.886935] ? __lock_is_held+0xbc/0x140 [ 35.886961] ip_rcv+0xc3f/0x1820 [ 35.886979] ? ip_local_deliver+0x6e0/0x6e0 [ 35.886986] ? rb_insert_color+0x1580/0x1580 [ 35.886996] ? print_usage_bug+0x3f0/0x3f0 [ 35.887020] ? __lock_is_held+0xbc/0x140 [ 35.887040] ? ip_local_deliver+0x6e0/0x6e0 [ 35.887052] __netif_receive_skb_core+0x1a3e/0x3450 [ 35.887058] ? __lock_acquire+0x6e9/0x47f0 [ 35.887080] ? nf_ingress+0x9f0/0x9f0 [ 35.887123] ? debug_check_no_locks_freed+0x3d0/0x3d0 [ 35.887158] ? check_noncircular+0x20/0x20 [ 35.887169] ? fastpath_timer_check+0x7d5/0xa70 [ 35.887182] ? check_noncircular+0x20/0x20 [ 35.887191] ? check_noncircular+0x20/0x20 [ 35.887197] ? check_noncircular+0x20/0x20 [ 35.887205] ? update_curr+0x415/0x9a0 [ 35.887219] ? print_usage_bug+0x3f0/0x3f0 [ 35.887232] ? find_held_lock+0x39/0x1d0 [ 35.887251] ? find_held_lock+0x39/0x1d0 [ 35.887270] ? print_usage_bug+0x3f0/0x3f0 [ 35.887286] ? lock_acquire+0x1d5/0x580 [ 35.887293] ? process_backlog+0x1ab/0x740 [ 35.887311] ? lock_release+0xda0/0xda0 [ 35.887337] __netif_receive_skb+0x2c/0x1b0 [ 35.887344] ? __netif_receive_skb+0x2c/0x1b0 [ 35.887356] process_backlog+0x203/0x740 [ 35.887361] ? mark_held_locks+0xb2/0x100 [ 35.887385] net_rx_action+0x792/0x1910 [ 35.887413] ? napi_complete_done+0x6c0/0x6c0 [ 35.887428] ? cpu_load_update_nohz_stop+0x2e0/0x2e0 [ 35.887441] ? do_raw_spin_trylock+0x190/0x190 [ 35.887458] ? check_noncircular+0x20/0x20 [ 35.887470] ? __lock_is_held+0xbc/0x140 [ 35.887487] ? timerqueue_add+0x1e9/0x280 [ 35.887505] ? enqueue_hrtimer+0x162/0x490 [ 35.887519] ? find_held_lock+0x39/0x1d0 [ 35.887544] ? lock_downgrade+0x980/0x980 [ 35.887552] ? lock_acquire+0x1d5/0x580 [ 35.887559] ? clockevents_program_event+0x163/0x2e0 [ 35.887569] ? lock_downgrade+0x980/0x980 [ 35.887592] ? pvclock_read_flags+0x160/0x160 [ 35.887599] ? find_held_lock+0x39/0x1d0 [ 35.887620] ? check_noncircular+0x20/0x20 [ 35.887630] ? print_usage_bug+0x3f0/0x3f0 [ 35.887643] ? ktime_get_resolution_ns+0x300/0x300 [ 35.887662] ? do_timer+0x50/0x50 [ 35.887679] ? __lock_is_held+0xbc/0x140 [ 35.887716] __do_softirq+0x29d/0xbb2 [ 35.887722] ? task_prio+0x40/0x40 [ 35.887743] ? __irqentry_text_end+0x4/0x4 [ 35.887751] ? irq_exit+0x103/0x210 [ 35.887760] ? smp_apic_timer_interrupt+0x16b/0x700 [ 35.887766] ? smp_reschedule_interrupt+0xe6/0x670 [ 35.887776] ? smp_call_function_single_interrupt+0x640/0x640 [ 35.887784] ? _raw_spin_lock+0x32/0x40 [ 35.887801] ? handle_edge_irq+0x2b4/0x7c0 [ 35.887810] ? task_prio+0x40/0x40 [ 35.887832] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 35.887851] do_softirq_own_stack+0x2a/0x40 [ 35.887855] [ 35.887862] do_softirq.part.19+0x14d/0x190 [ 35.887870] ? ip_finish_output2+0x87a/0x1460 [ 35.887877] __local_bh_enable_ip+0x1ee/0x230 [ 35.887888] ip_finish_output2+0x8ad/0x1460 [ 35.887896] ? check_noncircular+0x20/0x20 [ 35.887911] ? dst_output+0x140/0x140 [ 35.887919] ? check_noncircular+0x20/0x20 [ 35.887936] ? ip_route_input_noref+0x1e0/0x1e0 [ 35.887946] ? xfrm_lookup+0x71a/0x23f0 [ 35.887961] ? ipv4_mtu+0x28c/0x3d0 [ 35.887978] ? __lock_is_held+0xbc/0x140 [ 35.888004] ip_finish_output+0x85e/0xd10 [ 35.888009] ? ip_finish_output+0x85e/0xd10 [ 35.888022] ? ip_fragment.constprop.49+0x200/0x200 [ 35.888044] ? nf_hook_slow+0xd3/0x1a0 [ 35.888061] ip_output+0x1cc/0x860 [ 35.888073] ? ip_mc_output+0x1350/0x1350 [ 35.888100] ? ip_fragment.constprop.49+0x200/0x200 [ 35.888121] ip_local_out+0x95/0x160 [ 35.888136] ip_queue_xmit+0x8c6/0x18e0 [ 35.888155] ? ip_build_and_send_pkt+0xc30/0xc30 [ 35.888161] ? skb_send_sock+0x50/0x50 [ 35.888168] ? reqsk_fastopen_remove+0x581/0x610 [ 35.888175] ? dccp_insert_option_padding+0xad/0xd0 [ 35.888186] ? dccp_insert_options+0x20f/0xcf0 [ 35.888200] ? dccp_v4_send_check+0x181/0x3b0 [ 35.888216] dccp_transmit_skb+0x9ac/0x10f0 [ 35.888239] dccp_xmit_packet+0x20f/0x730 [ 35.888252] ? dccp_send_ack+0x350/0x350 [ 35.888262] ? ccid3_hc_tx_send_packet+0x2de/0x840 [ 35.888281] dccp_write_xmit+0x17d/0x1d0 [ 35.888295] dccp_sendmsg+0x6d0/0xa80 [ 35.888304] ? lock_downgrade+0x980/0x980 [ 35.888314] ? avc_has_perm+0xd0/0x680 [ 35.888327] ? compat_dccp_getsockopt+0x70/0x70 [ 35.888333] ? sock_has_perm+0x29c/0x400 [ 35.888346] ? selinux_secmark_relabel_packet+0xc0/0xc0 [ 35.888357] ? lock_release+0xda0/0xda0 [ 35.888378] inet_sendmsg+0x11f/0x5e0 [ 35.888390] ? inet_recvmsg+0x5f0/0x5f0 [ 35.888402] ? selinux_socket_sendmsg+0x36/0x40 [ 35.888411] ? security_socket_sendmsg+0x89/0xb0 [ 35.888419] ? inet_recvmsg+0x5f0/0x5f0 [ 35.888431] sock_sendmsg+0xca/0x110 [ 35.888443] sock_write_iter+0x320/0x5e0 [ 35.888456] ? sock_sendmsg+0x110/0x110 [ 35.888481] ? iov_iter_init+0xaf/0x1d0 [ 35.888496] __vfs_write+0x68a/0x970 [ 35.888510] ? kernel_read+0x120/0x120 [ 35.888516] ? bpf_fd_pass+0x280/0x280 [ 35.888531] ? _cond_resched+0x14/0x30 [ 35.888547] ? selinux_file_permission+0x82/0x460 [ 35.888571] ? rw_verify_area+0xe5/0x2b0 [ 35.888578] ? __fdget_raw+0x20/0x20 [ 35.888590] vfs_write+0x18f/0x510 [ 35.888606] SyS_write+0xef/0x220 [ 35.888619] ? SyS_read+0x220/0x220 [ 35.888625] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 35.888635] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 35.888654] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 35.888659] RIP: 0033:0x452a39 [ 35.888663] RSP: 002b:00007f4287754c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000001 [ 35.888672] RAX: ffffffffffffffda RBX: 00007f4287755700 RCX: 0000000000452a39 [ 35.888676] RDX: 000000000000005a RSI: 000000002077f000 RDI: 0000000000000005 [ 35.888680] RBP: 00007ffd224ea870 R08: 0000000000000000 R09: 0000000000000000 [ 35.888684] R10: 0000000000000000 R11: 0000000000000212 R12: 0000000000000000 [ 35.888688] R13: 00007ffd224ea7ef R14: 00007f42877559c0 R15: 000000000000000a [ 35.922040] BUG: please report to dccp@vger.kernel.org => prev = 0, last = 0 at net/dccp/ccids/lib/packet_history.c:425/tfrc_rx_hist_sample_rtt() [ 35.922049] CPU: 1 PID: 3291 Comm: syz-executor0 Not tainted 4.15.0-rc2+ #210 [ 35.922053] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 35.922056] Call Trace: [ 35.922059] [ 35.922071] dump_stack+0x194/0x257 [ 35.922084] ? arch_local_irq_restore+0x53/0x53 [ 35.922097] ? tfrc_rx_handle_loss+0xb38/0x24d0 [ 35.922107] ? __lock_is_held+0xbc/0x140 [ 35.922126] tfrc_rx_hist_sample_rtt+0x407/0x4d0 [ 35.922141] ccid3_hc_rx_packet_recv+0x690/0xea7 [ 35.922148] ? dccp_parse_options+0x3d8/0x1030 [ 35.922166] ? ccid3_hc_tx_packet_recv+0xd20/0xd20 [ 35.922175] dccp_deliver_input_to_ccids+0xd9/0x250 [ 35.922189] dccp_rcv_established+0x88/0xb0 [ 35.922202] dccp_v4_do_rcv+0x12f/0x160 [ 35.922221] __sk_receive_skb+0x33e/0xc20 [ 35.922239] ? sk_free+0x40/0x40 [ 35.922252] ? sock_edemux+0x40/0x40 [ 35.922258] ? skb_send_sock+0x50/0x50 [ 35.922280] ? dccp_invalid_packet+0x55/0x7c0 [ 35.922298] dccp_v4_rcv+0xef1/0x1c00 [ 35.922327] ? dccp_v4_err+0x1550/0x1550 [ 35.922332] ? find_held_lock+0x39/0x1d0 [ 35.922345] ? lock_release+0xda0/0xda0 [ 35.922358] ? __lock_is_held+0xbc/0x140 [ 35.922385] ip_local_deliver_finish+0x2e2/0xba0 [ 35.922401] ? inet_del_offload+0x40/0x40 [ 35.922425] ip_local_deliver+0x1ce/0x6e0 [ 35.922436] ? ip_call_ra_chain+0x6d0/0x6d0 [ 35.922441] ? print_usage_bug+0x3f0/0x3f0 [ 35.922472] ? debug_check_no_locks_freed+0x3d0/0x3d0 [ 35.922484] ip_rcv_finish+0x887/0x19a0 [ 35.922503] ? ip_local_deliver_finish+0xba0/0xba0 [ 35.922517] ? lock_downgrade+0x980/0x980 [ 35.922526] ? ip_rcv+0xc80/0x1820 [ 35.922544] ? lock_release+0xda0/0xda0 [ 35.922557] ? __lock_is_held+0xbc/0x140 [ 35.922584] ip_rcv+0xc3f/0x1820 [ 35.922602] ? ip_local_deliver+0x6e0/0x6e0 [ 35.922612] ? __lock_is_held+0xbc/0x140 [ 35.922633] ? __lock_is_held+0xbc/0x140 [ 35.922652] ? ip_local_deliver+0x6e0/0x6e0 [ 35.922665] __netif_receive_skb_core+0x1a3e/0x3450 [ 35.922688] ? nf_ingress+0x9f0/0x9f0 [ 35.922695] ? clockevents_program_event+0x163/0x2e0 [ 35.922705] ? lock_downgrade+0x980/0x980 [ 35.922737] ? debug_check_no_locks_freed+0x3d0/0x3d0 [ 35.922754] ? kvm_clock_get_cycles+0x25/0x30 [ 35.922761] ? ktime_get+0x26f/0x3a0 [ 35.922775] ? ktime_get_resolution_ns+0x300/0x300 [ 35.922790] ? check_noncircular+0x20/0x20 [ 35.922799] ? do_timer+0x50/0x50 [ 35.922811] ? check_noncircular+0x20/0x20 [ 35.922818] ? lapic_next_event+0x54/0x80 [ 35.922828] ? clockevents_program_event+0x108/0x2e0 [ 35.922842] ? tick_program_event+0x83/0x100 [ 35.922861] ? task_prio+0x40/0x40 [ 35.922876] ? find_held_lock+0x39/0x1d0 [ 35.922895] ? print_usage_bug+0x3f0/0x3f0 [ 35.922911] ? lock_acquire+0x1d5/0x580 [ 35.922918] ? process_backlog+0x1ab/0x740 [ 35.922936] ? lock_release+0xda0/0xda0 [ 35.922962] __netif_receive_skb+0x2c/0x1b0 [ 35.922968] ? __netif_receive_skb+0x2c/0x1b0 [ 35.922980] process_backlog+0x203/0x740 [ 35.923004] net_rx_action+0x792/0x1910 [ 35.923033] ? napi_complete_done+0x6c0/0x6c0 [ 35.923039] ? trace_hardirqs_off+0xd/0x10 [ 35.923046] ? _raw_spin_unlock_irqrestore+0xa6/0xba [ 35.923056] ? try_to_wake_up+0xf9/0x1600 [ 35.923062] ? cpu_load_update_nohz_stop+0x2e0/0x2e0 [ 35.923086] ? check_noncircular+0x20/0x20 [ 35.923096] ? check_noncircular+0x20/0x20 [ 35.923113] ? lock_acquire+0x1d5/0x580 [ 35.923120] ? __hrtimer_run_queues+0x385/0xe10 [ 35.923138] ? lock_release+0xda0/0xda0 [ 35.923152] ? find_held_lock+0x39/0x1d0 [ 35.923176] ? lock_downgrade+0x980/0x980 [ 35.923184] ? lock_acquire+0x1d5/0x580 [ 35.923192] ? clockevents_program_event+0x163/0x2e0 [ 35.923202] ? lock_downgrade+0x980/0x980 [ 35.923225] ? pvclock_read_flags+0x160/0x160 [ 35.923231] ? find_held_lock+0x39/0x1d0 [ 35.923252] ? check_noncircular+0x20/0x20 [ 35.923262] ? print_usage_bug+0x3f0/0x3f0 [ 35.923275] ? ktime_get_resolution_ns+0x300/0x300 [ 35.923289] ? check_noncircular+0x20/0x20 [ 35.923299] ? do_timer+0x50/0x50 [ 35.923316] ? __lock_is_held+0xbc/0x140 [ 35.923345] __do_softirq+0x29d/0xbb2 [ 35.923350] ? task_prio+0x40/0x40 [ 35.923372] ? __irqentry_text_end+0x4/0x4 [ 35.923378] ? irq_exit+0x103/0x210 [ 35.923387] ? smp_apic_timer_interrupt+0x16b/0x700 [ 35.923394] ? smp_reschedule_interrupt+0xe6/0x670 [ 35.923403] ? smp_call_function_single_interrupt+0x640/0x640 [ 35.923411] ? _raw_spin_lock+0x32/0x40 [ 35.923428] ? handle_edge_irq+0x2b4/0x7c0 [ 35.923436] ? task_prio+0x40/0x40 [ 35.923458] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 35.923485] do_softirq_own_stack+0x2a/0x40 [ 35.923489] [ 35.923497] do_softirq.part.19+0x14d/0x190 [ 35.923504] ? ip_finish_output2+0x87a/0x1460 [ 35.923511] __local_bh_enable_ip+0x1ee/0x230 [ 35.923522] ip_finish_output2+0x8ad/0x1460 [ 35.923531] ? check_noncircular+0x20/0x20 [ 35.923545] ? dst_output+0x140/0x140 [ 35.923553] ? check_noncircular+0x20/0x20 [ 35.923570] ? ip_route_input_noref+0x1e0/0x1e0 [ 35.923580] ? xfrm_lookup+0x71a/0x23f0 [ 35.923595] ? ipv4_mtu+0x28c/0x3d0 [ 35.923612] ? __lock_is_held+0xbc/0x140 [ 35.923638] ip_finish_output+0x85e/0xd10 [ 35.923644] ? ip_finish_output+0x85e/0xd10 [ 35.923656] ? ip_fragment.constprop.49+0x200/0x200 [ 35.923680] ? nf_hook_slow+0xd3/0x1a0 [ 35.923697] ip_output+0x1cc/0x860 [ 35.923709] ? ip_mc_output+0x1350/0x1350 [ 35.923733] ? ip_fragment.constprop.49+0x200/0x200 [ 35.923753] ip_local_out+0x95/0x160 [ 35.923768] ip_queue_xmit+0x8c6/0x18e0 [ 35.923788] ? ip_build_and_send_pkt+0xc30/0xc30 [ 35.923793] ? skb_send_sock+0x50/0x50 [ 35.923799] ? reqsk_fastopen_remove+0x581/0x610 [ 35.923806] ? dccp_insert_option_padding+0xad/0xd0 [ 35.923818] ? dccp_insert_options+0x20f/0xcf0 [ 35.923832] ? dccp_v4_send_check+0x181/0x3b0 [ 35.923847] dccp_transmit_skb+0x9ac/0x10f0 [ 35.923870] dccp_xmit_packet+0x20f/0x730 [ 35.923883] ? dccp_send_ack+0x350/0x350 [ 35.923893] ? ccid3_hc_tx_send_packet+0x2de/0x840 [ 35.923913] dccp_write_xmit+0x17d/0x1d0 [ 35.923927] dccp_sendmsg+0x6d0/0xa80 [ 35.923935] ? lock_downgrade+0x980/0x980 [ 35.923946] ? avc_has_perm+0xd0/0x680 [ 35.923960] ? compat_dccp_getsockopt+0x70/0x70 [ 35.923966] ? sock_has_perm+0x29c/0x400 [ 35.923979] ? selinux_secmark_relabel_packet+0xc0/0xc0 [ 35.923990] ? lock_release+0xda0/0xda0 [ 35.924011] inet_sendmsg+0x11f/0x5e0 [ 35.924024] ? inet_recvmsg+0x5f0/0x5f0 [ 35.924035] ? selinux_socket_sendmsg+0x36/0x40 [ 35.924044] ? security_socket_sendmsg+0x89/0xb0 [ 35.924053] ? inet_recvmsg+0x5f0/0x5f0 [ 35.924065] sock_sendmsg+0xca/0x110 [ 35.924077] sock_write_iter+0x320/0x5e0 [ 35.924093] ? sock_sendmsg+0x110/0x110 [ 35.924119] ? iov_iter_init+0xaf/0x1d0 [ 35.924134] __vfs_write+0x68a/0x970 [ 35.924148] ? kernel_read+0x120/0x120 [ 35.924154] ? bpf_fd_pass+0x280/0x280 [ 35.924169] ? _cond_resched+0x14/0x30 [ 35.924185] ? selinux_file_permission+0x82/0x460 [ 35.924209] ? rw_verify_area+0xe5/0x2b0 [ 35.924215] ? __fdget_raw+0x20/0x20 [ 35.924228] vfs_write+0x18f/0x510 [ 35.924243] SyS_write+0xef/0x220 [ 35.924256] ? SyS_read+0x220/0x220 [ 35.924262] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 35.924273] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 35.924291] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 35.924297] RIP: 0033:0x452a39 [ 35.924301] RSP: 002b:00007f550aae2c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000001 [ 35.924309] RAX: ffffffffffffffda RBX: 00007f550aae3700 RCX: 0000000000452a39 [ 35.924314] RDX: 000000000000005a RSI: 000000002077f000 RDI: 0000000000000005 [ 35.924317] RBP: 00007ffc255caf30 R08: 0000000000000000 R09: 0000000000000000 [ 35.924321] R10: 0000000000000000 R11: 0000000000000212 R12: 0000000000000000 [ 35.924325] R13: 00007ffc255caeaf R14: 00007f550aae39c0 R15: 000000000000000a [ 38.126202] CPU: 0 PID: 3286 Comm: syz-executor2 Not tainted 4.15.0-rc2+ #210 [ 38.133441] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 38.142769] Call Trace: [ 38.145321] [ 38.147443] dump_stack+0x194/0x257 [ 38.151040] ? arch_local_irq_restore+0x53/0x53 [ 38.155677] ? tfrc_rx_handle_loss+0xb38/0x24d0 [ 38.160314] ? __lock_is_held+0xbc/0x140 [ 38.164348] tfrc_rx_hist_sample_rtt+0x407/0x4d0 [ 38.169078] ccid3_hc_rx_packet_recv+0x690/0xea7 [ 38.173801] ? dccp_parse_options+0x3d8/0x1030 [ 38.178354] ? ccid3_hc_tx_packet_recv+0xd20/0xd20 [ 38.183252] dccp_deliver_input_to_ccids+0xd9/0x250 [ 38.188239] dccp_rcv_established+0x88/0xb0 [ 38.192530] dccp_v4_do_rcv+0x12f/0x160 [ 38.196480] __sk_receive_skb+0x33e/0xc20 [ 38.200603] ? sk_free+0x40/0x40 [ 38.203943] ? sock_edemux+0x40/0x40 [ 38.207622] ? skb_send_sock+0x50/0x50 [ 38.211483] ? refcount_sub_and_test+0x115/0x1b0 [ 38.216216] ? dccp_invalid_packet+0x55/0x7c0 [ 38.220685] dccp_v4_rcv+0xef1/0x1c00 [ 38.224468] ? dccp_v4_err+0x1550/0x1550 [ 38.228496] ? find_held_lock+0x39/0x1d0 [ 38.232528] ? lock_release+0xda0/0xda0 [ 38.236474] ? __lock_is_held+0xbc/0x140 [ 38.240516] ip_local_deliver_finish+0x2e2/0xba0 [ 38.245244] ? inet_del_offload+0x40/0x40 [ 38.249368] ip_local_deliver+0x1ce/0x6e0 [ 38.253587] ? ip_call_ra_chain+0x6d0/0x6d0 [ 38.257881] ? __lock_acquire+0x6e9/0x47f0 [ 38.262085] ? __update_load_avg_se.isra.27+0x56a/0x7c0 [ 38.267418] ? print_usage_bug+0x3f0/0x3f0 [ 38.271626] ip_rcv_finish+0x887/0x19a0 [ 38.275574] ? ip_local_deliver_finish+0xba0/0xba0 [ 38.280476] ? lock_downgrade+0x980/0x980 [ 38.284592] ? ip_rcv+0xc80/0x1820 [ 38.288104] ? debug_check_no_locks_freed+0x3d0/0x3d0 [ 38.293263] ? lock_release+0xda0/0xda0 [ 38.297209] ? __lock_is_held+0xbc/0x140 [ 38.301247] ip_rcv+0xc3f/0x1820 [ 38.304588] ? ip_local_deliver+0x6e0/0x6e0 [ 38.308878] ? rb_insert_color+0x1580/0x1580 [ 38.313274] ? __lock_is_held+0xbc/0x140 [ 38.317311] ? ip_local_deliver+0x6e0/0x6e0 [ 38.321604] __netif_receive_skb_core+0x1a3e/0x3450 [ 38.326596] ? nf_ingress+0x9f0/0x9f0 [ 38.330368] ? lock_release+0xda0/0xda0 [ 38.334323] ? debug_check_no_locks_freed+0x3d0/0x3d0 [ 38.339485] ? rcu_read_unlock+0x35/0x70 [ 38.343515] ? update_curr+0x415/0x9a0 [ 38.347374] ? nohz_balance_exit_idle.part.99+0x70/0x70 [ 38.352714] ? __lock_is_held+0xbc/0x140 [ 38.356747] ? check_noncircular+0x20/0x20 [ 38.360948] ? check_noncircular+0x20/0x20 [ 38.365154] ? update_curr+0x2e6/0x9a0 [ 38.369011] ? __enqueue_entity+0x109/0x1e0 [ 38.373309] ? print_usage_bug+0x3f0/0x3f0 [ 38.377513] ? enqueue_task_fair+0x3b7/0x2950 [ 38.381983] ? find_held_lock+0x39/0x1d0 [ 38.386029] ? print_usage_bug+0x3f0/0x3f0 [ 38.390236] ? lock_acquire+0x1d5/0x580 [ 38.394179] ? process_backlog+0x1ab/0x740 [ 38.398393] ? lock_release+0xda0/0xda0 [ 38.402360] __netif_receive_skb+0x2c/0x1b0 [ 38.406650] ? __netif_receive_skb+0x2c/0x1b0 [ 38.411115] process_backlog+0x203/0x740 [ 38.415143] ? mark_held_locks+0xb2/0x100 [ 38.419269] net_rx_action+0x792/0x1910 [ 38.423225] ? napi_complete_done+0x6c0/0x6c0 [ 38.427689] ? find_held_lock+0x39/0x1d0 [ 38.431725] ? print_usage_bug+0x3f0/0x3f0 [ 38.435935] ? __run_timers+0x1ce/0xb60 [ 38.439878] ? check_noncircular+0x20/0x20 [ 38.444096] ? lock_release+0xda0/0xda0 [ 38.448041] ? lock_acquire+0x1d5/0x580 [ 38.451987] ? mark_held_locks+0xb2/0x100 [ 38.456106] ? _raw_spin_unlock_irq+0x27/0x70 [ 38.460569] ? trace_hardirqs_on_caller+0x19e/0x5c0 [ 38.465553] ? trace_hardirqs_on+0xd/0x10 [ 38.469668] ? _raw_spin_unlock_irq+0x27/0x70 [ 38.474129] ? __run_timers+0x16f/0xb60 [ 38.478076] ? lock_downgrade+0x980/0x980 [ 38.482193] ? del_timer_sync+0x240/0x240 [ 38.486306] ? lock_downgrade+0x980/0x980 [ 38.490433] ? pvclock_read_flags+0x160/0x160 [ 38.494895] ? find_held_lock+0x39/0x1d0 [ 38.498932] ? check_noncircular+0x20/0x20 [ 38.503135] ? print_usage_bug+0x3f0/0x3f0 [ 38.507341] ? ktime_get_resolution_ns+0x300/0x300 [ 38.512242] ? check_noncircular+0x20/0x20 [ 38.516448] ? do_timer+0x50/0x50 [ 38.519874] ? __lock_is_held+0xbc/0x140 [ 38.523931] __do_softirq+0x29d/0xbb2 [ 38.527701] ? task_prio+0x40/0x40 [ 38.531217] ? __irqentry_text_end+0x4/0x4 [ 38.535420] ? irq_exit+0x103/0x210 [ 38.539021] ? smp_apic_timer_interrupt+0x16b/0x700 [ 38.544009] ? smp_reschedule_interrupt+0xe6/0x670 [ 38.548910] ? smp_call_function_single_interrupt+0x640/0x640 [ 38.554761] ? _raw_spin_lock+0x32/0x40 [ 38.558708] ? handle_edge_irq+0x2b4/0x7c0 [ 38.562911] ? task_prio+0x40/0x40 [ 38.566428] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 38.571242] do_softirq_own_stack+0x2a/0x40 [ 38.575528] [ 38.577732] do_softirq.part.19+0x14d/0x190 [ 38.582028] ? ip_finish_output2+0x87a/0x1460 [ 38.586491] __local_bh_enable_ip+0x1ee/0x230 [ 38.590954] ip_finish_output2+0x8ad/0x1460 [ 38.595243] ? check_noncircular+0x20/0x20 [ 38.599450] ? dst_output+0x140/0x140 [ 38.603216] ? check_noncircular+0x20/0x20 [ 38.607433] ? ip_route_input_noref+0x1e0/0x1e0 [ 38.612083] ? xfrm_lookup+0x71a/0x23f0 [ 38.616035] ? ipv4_mtu+0x28c/0x3d0 [ 38.619638] ? __lock_is_held+0xbc/0x140 [ 38.623678] ip_finish_output+0x85e/0xd10 [ 38.627792] ? ip_finish_output+0x85e/0xd10 [ 38.632083] ? ip_fragment.constprop.49+0x200/0x200 [ 38.637075] ? nf_hook_slow+0xd3/0x1a0 [ 38.640938] ip_output+0x1cc/0x860 [ 38.644450] ? ip_mc_output+0x1350/0x1350 [ 38.648577] ? ip_fragment.constprop.49+0x200/0x200 [ 38.653568] ip_local_out+0x95/0x160 [ 38.657253] ip_queue_xmit+0x8c6/0x18e0 [ 38.661204] ? ip_build_and_send_pkt+0xc30/0xc30 [ 38.665927] ? skb_send_sock+0x50/0x50 [ 38.669782] ? reqsk_fastopen_remove+0x581/0x610 [ 38.674503] ? dccp_insert_option_padding+0xad/0xd0 [ 38.679489] ? dccp_insert_options+0x20f/0xcf0 [ 38.684043] ? dccp_v4_send_check+0x181/0x3b0 [ 38.688510] dccp_transmit_skb+0x9ac/0x10f0 [ 38.692808] dccp_xmit_packet+0x20f/0x730 [ 38.696926] ? dccp_send_ack+0x350/0x350 [ 38.700956] ? ccid3_hc_tx_send_packet+0x2de/0x840 [ 38.705860] dccp_write_xmit+0x17d/0x1d0 [ 38.709893] dccp_sendmsg+0x6d0/0xa80 [ 38.713662] ? lock_downgrade+0x980/0x980 [ 38.717784] ? avc_has_perm+0xd0/0x680 [ 38.721644] ? compat_dccp_getsockopt+0x70/0x70 [ 38.726280] ? sock_has_perm+0x29c/0x400 [ 38.730312] ? selinux_secmark_relabel_packet+0xc0/0xc0 [ 38.735648] ? lock_release+0xda0/0xda0 [ 38.739599] inet_sendmsg+0x11f/0x5e0 [ 38.743813] ? inet_recvmsg+0x5f0/0x5f0 [ 38.747758] ? selinux_socket_sendmsg+0x36/0x40 [ 38.752394] ? security_socket_sendmsg+0x89/0xb0 [ 38.757118] ? inet_recvmsg+0x5f0/0x5f0 [ 38.761063] sock_sendmsg+0xca/0x110 [ 38.764747] sock_write_iter+0x320/0x5e0 [ 38.768779] ? sock_sendmsg+0x110/0x110 [ 38.772731] ? iov_iter_init+0xaf/0x1d0 [ 38.776677] __vfs_write+0x68a/0x970 [ 38.780366] ? kernel_read+0x120/0x120 [ 38.784219] ? bpf_fd_pass+0x280/0x280 [ 38.788080] ? _cond_resched+0x14/0x30 [ 38.791947] ? selinux_file_permission+0x82/0x460 [ 38.796767] ? rw_verify_area+0xe5/0x2b0 [ 38.800796] ? __fdget_raw+0x20/0x20 [ 38.804479] vfs_write+0x18f/0x510 [ 38.807992] SyS_write+0xef/0x220 [ 38.811418] ? SyS_read+0x220/0x220 [ 38.815018] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 38.820013] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 38.824748] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 38.829471] RIP: 0033:0x452a39 [ 38.832627] RSP: 002b:00007fbfe66aac58 EFLAGS: 00000212 ORIG_RAX: 0000000000000001 [ 38.840306] RAX: ffffffffffffffda RBX: 00007fbfe66ab700 RCX: 0000000000452a39 [ 38.848412] RDX: 000000000000005a RSI: 000000002077f000 RDI: 0000000000000005 [ 38.855659] RBP: 00007ffd503dc890 R08: 0000000000000000 R09: 0000000000000000 [ 38.862904] R10: 0000000000000000 R11: 0000000000000212 R12: 0000000000000000 [ 38.870489] R13: 00007ffd503dc80f R14: 00007fbfe66ab9c0 R15: 000000000000000a 2017/12/06 21:36:57 executed programs: 56 [ 38.886900] net_ratelimit: 46 callbacks suppressed [ 38.886904] dccp_close: ABORT with 36 bytes unread [ 38.900790] nla_parse: 101 callbacks suppressed [ 38.900795] netlink: 2 bytes leftover after parsing attributes in process `syz-executor0'. [ 38.916884] netlink: 2 bytes leftover after parsing attributes in process `syz-executor7'. [ 38.925638] netlink: 2 bytes leftover after parsing attributes in process `syz-executor5'. [ 38.934475] netlink: 2 bytes leftover after parsing attributes in process `syz-executor3'. [ 38.943830] netlink: 2 bytes leftover after parsing attributes in process `syz-executor4'. [ 38.955716] netlink: 2 bytes leftover after parsing attributes in process `syz-executor2'. [ 38.965436] netlink: 2 bytes leftover after parsing attributes in process `syz-executor6'. [ 38.974152] netlink: 2 bytes leftover after parsing attributes in process `syz-executor1'. [ 38.982945] netlink: 2 bytes leftover after parsing attributes in process `syz-executor0'. [ 38.996469] netlink: 2 bytes leftover after parsing attributes in process `syz-executor5'. [ 39.034484] dccp_close: ABORT with 36 bytes unread [ 39.053241] dccp_close: ABORT with 36 bytes unread [ 39.054827] dccp_close: ABORT with 36 bytes unread [ 39.062532] dccp_close: ABORT with 36 bytes unread [ 39.064813] dccp_close: ABORT with 36 bytes unread [ 39.064913] dccp_close: ABORT with 36 bytes unread [ 39.066896] dccp_close: ABORT with 36 bytes unread [ 39.092134] dccp_close: ABORT with 36 bytes unread [ 39.160814] dccp_close: ABORT with 36 bytes unread [ 39.162312] BUG: please report to dccp@vger.kernel.org => prev = 0, last = 0 at net/dccp/ccids/lib/packet_history.c:425/tfrc_rx_hist_sample_rtt() [ 39.162321] CPU: 0 PID: 3398 Comm: syz-executor7 Not tainted 4.15.0-rc2+ #210 [ 39.162325] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 39.162333] Call Trace: [ 39.162336] [ 39.162347] dump_stack+0x194/0x257 [ 39.162361] ? arch_local_irq_restore+0x53/0x53 [ 39.162370] ? tfrc_rx_handle_loss+0xb38/0x24d0 [ 39.162381] ? __lock_is_held+0xbc/0x140 [ 39.162400] tfrc_rx_hist_sample_rtt+0x407/0x4d0 [ 39.162415] ccid3_hc_rx_packet_recv+0x690/0xea7 [ 39.162421] ? dccp_parse_options+0x3d8/0x1030 [ 39.162439] ? ccid3_hc_tx_packet_recv+0xd20/0xd20 [ 39.162448] dccp_deliver_input_to_ccids+0xd9/0x250 [ 39.162461] dccp_rcv_established+0x88/0xb0 [ 39.162472] dccp_v4_do_rcv+0x12f/0x160 [ 39.162487] __sk_receive_skb+0x33e/0xc20 [ 39.162503] ? sk_free+0x40/0x40 [ 39.162516] ? sock_edemux+0x40/0x40 [ 39.162522] ? skb_send_sock+0x50/0x50 [ 39.162534] ? refcount_sub_and_test+0x115/0x1b0 [ 39.162554] ? dccp_invalid_packet+0x55/0x7c0 [ 39.162572] dccp_v4_rcv+0xef1/0x1c00 [ 39.162601] ? dccp_v4_err+0x1550/0x1550 [ 39.162606] ? find_held_lock+0x39/0x1d0 [ 39.162619] ? lock_release+0xda0/0xda0 [ 39.162632] ? __lock_is_held+0xbc/0x140 [ 39.162659] ip_local_deliver_finish+0x2e2/0xba0 [ 39.162675] ? inet_del_offload+0x40/0x40 [ 39.162699] ip_local_deliver+0x1ce/0x6e0 [ 39.162710] ? ip_call_ra_chain+0x6d0/0x6d0 [ 39.162729] ? print_usage_bug+0x3f0/0x3f0 [ 39.162738] ? __free_insn_slot+0x5c0/0x5c0 [ 39.162759] ip_rcv_finish+0x887/0x19a0 [ 39.162777] ? ip_local_deliver_finish+0xba0/0xba0 [ 39.162792] ? lock_downgrade+0x980/0x980 [ 39.162801] ? ip_rcv+0xc80/0x1820 [ 39.162809] ? lock_release+0xda0/0xda0 [ 39.162824] ? lock_release+0xda0/0xda0 [ 39.162837] ? __lock_is_held+0xbc/0x140 [ 39.162864] ip_rcv+0xc3f/0x1820 [ 39.162882] ? ip_local_deliver+0x6e0/0x6e0 [ 39.162893] ? print_usage_bug+0x3f0/0x3f0 [ 39.162914] ? __lock_is_held+0xbc/0x140 [ 39.162933] ? ip_local_deliver+0x6e0/0x6e0 [ 39.162946] __netif_receive_skb_core+0x1a3e/0x3450 [ 39.162951] ? __lock_acquire+0x6e9/0x47f0 [ 39.162973] ? nf_ingress+0x9f0/0x9f0 [ 39.163013] ? debug_check_no_locks_freed+0x3d0/0x3d0 [ 39.163041] ? __lock_acquire+0x6e9/0x47f0 [ 39.163052] ? check_noncircular+0x20/0x20 [ 39.163063] ? fastpath_timer_check+0x7d5/0xa70 [ 39.163076] ? check_noncircular+0x20/0x20 [ 39.163084] ? check_noncircular+0x20/0x20 [ 39.163100] ? debug_check_no_locks_freed+0x3d0/0x3d0 [ 39.163108] ? print_usage_bug+0x3f0/0x3f0 [ 39.163121] ? find_held_lock+0x39/0x1d0 [ 39.163139] ? find_held_lock+0x39/0x1d0 [ 39.163159] ? print_usage_bug+0x3f0/0x3f0 [ 39.163175] ? lock_acquire+0x1d5/0x580 [ 39.163182] ? process_backlog+0x1ab/0x740 [ 39.163200] ? lock_release+0xda0/0xda0 [ 39.163226] __netif_receive_skb+0x2c/0x1b0 [ 39.163233] ? __netif_receive_skb+0x2c/0x1b0 [ 39.163244] process_backlog+0x203/0x740 [ 39.163250] ? mark_held_locks+0xb2/0x100 [ 39.163274] net_rx_action+0x792/0x1910 [ 39.163302] ? napi_complete_done+0x6c0/0x6c0 [ 39.163314] ? trace_hardirqs_on_caller+0x19e/0x5c0 [ 39.163323] ? trace_hardirqs_on+0xd/0x10 [ 39.163334] ? _raw_spin_unlock_irq+0x27/0x70 [ 39.163342] ? __run_timers+0x16f/0xb60 [ 39.163367] ? del_timer_sync+0x240/0x240 [ 39.163382] ? timerqueue_add+0x1e9/0x280 [ 39.163399] ? enqueue_hrtimer+0x162/0x490 [ 39.163412] ? find_held_lock+0x39/0x1d0 [ 39.163437] ? lock_downgrade+0x980/0x980 [ 39.163446] ? lock_acquire+0x1d5/0x580 [ 39.163454] ? clockevents_program_event+0x163/0x2e0 [ 39.163463] ? lock_downgrade+0x980/0x980 [ 39.163486] ? rcu_pm_notify+0xc0/0xc0 [ 39.163509] ? check_noncircular+0x20/0x20 [ 39.163519] ? print_usage_bug+0x3f0/0x3f0 [ 39.163542] ? __irqentry_text_end+0x4/0x4 [ 39.163552] ? do_timer+0x50/0x50 [ 39.163569] ? __lock_is_held+0xbc/0x140 [ 39.163598] __do_softirq+0x29d/0xbb2 [ 39.163604] ? task_prio+0x40/0x40 [ 39.163625] ? __irqentry_text_end+0x4/0x4 [ 39.163631] ? irq_exit+0x103/0x210 [ 39.163641] ? smp_apic_timer_interrupt+0x16b/0x700 [ 39.163647] ? smp_reschedule_interrupt+0xe6/0x670 [ 39.163656] ? smp_call_function_single_interrupt+0x640/0x640 [ 39.163664] ? _raw_spin_lock+0x32/0x40 [ 39.163681] ? handle_edge_irq+0x2b4/0x7c0 [ 39.163689] ? task_prio+0x40/0x40 [ 39.163712] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 39.163731] do_softirq_own_stack+0x2a/0x40 [ 39.163734] [ 39.163742] do_softirq.part.19+0x14d/0x190 [ 39.163749] ? ip_finish_output2+0x87a/0x1460 [ 39.163756] __local_bh_enable_ip+0x1ee/0x230 [ 39.163767] ip_finish_output2+0x8ad/0x1460 [ 39.163775] ? check_noncircular+0x20/0x20 [ 39.163790] ? dst_output+0x140/0x140 [ 39.163798] ? check_noncircular+0x20/0x20 [ 39.163814] ? ip_route_input_noref+0x1e0/0x1e0 [ 39.163822] ? xfrm_lookup+0x71a/0x23f0 [ 39.163837] ? ipv4_mtu+0x28c/0x3d0 [ 39.163854] ? __lock_is_held+0xbc/0x140 [ 39.163880] ip_finish_output+0x85e/0xd10 [ 39.163885] ? ip_finish_output+0x85e/0xd10 [ 39.163898] ? ip_fragment.constprop.49+0x200/0x200 [ 39.163920] ? nf_hook_slow+0xd3/0x1a0 [ 39.163937] ip_output+0x1cc/0x860 [ 39.163949] ? ip_mc_output+0x1350/0x1350 [ 39.163973] ? ip_fragment.constprop.49+0x200/0x200 [ 39.163993] ip_local_out+0x95/0x160 [ 39.164008] ip_queue_xmit+0x8c6/0x18e0 [ 39.164028] ? ip_build_and_send_pkt+0xc30/0xc30 [ 39.164034] ? skb_send_sock+0x50/0x50 [ 39.164040] ? reqsk_fastopen_remove+0x581/0x610 [ 39.164047] ? dccp_insert_option_padding+0xad/0xd0 [ 39.164058] ? dccp_insert_options+0x20f/0xcf0 [ 39.164072] ? dccp_v4_send_check+0x181/0x3b0 [ 39.164088] dccp_transmit_skb+0x9ac/0x10f0 [ 39.164111] dccp_xmit_packet+0x20f/0x730 [ 39.164124] ? dccp_send_ack+0x350/0x350 [ 39.164134] ? ccid3_hc_tx_send_packet+0x2de/0x840 [ 39.164153] dccp_write_xmit+0x17d/0x1d0 [ 39.164167] dccp_sendmsg+0x6d0/0xa80 [ 39.164176] ? lock_downgrade+0x980/0x980 [ 39.164186] ? avc_has_perm+0xd0/0x680 [ 39.164199] ? compat_dccp_getsockopt+0x70/0x70 [ 39.164206] ? sock_has_perm+0x29c/0x400 [ 39.164219] ? selinux_secmark_relabel_packet+0xc0/0xc0 [ 39.164230] ? lock_release+0xda0/0xda0 [ 39.164251] inet_sendmsg+0x11f/0x5e0 [ 39.164263] ? inet_recvmsg+0x5f0/0x5f0 [ 39.164275] ? selinux_socket_sendmsg+0x36/0x40 [ 39.164283] ? security_socket_sendmsg+0x89/0xb0 [ 39.164292] ? inet_recvmsg+0x5f0/0x5f0 [ 39.164304] sock_sendmsg+0xca/0x110 [ 39.164316] sock_write_iter+0x320/0x5e0 [ 39.164332] ? sock_sendmsg+0x110/0x110 [ 39.164357] ? iov_iter_init+0xaf/0x1d0 [ 39.164372] __vfs_write+0x68a/0x970 [ 39.164386] ? kernel_read+0x120/0x120 [ 39.164392] ? bpf_fd_pass+0x280/0x280 [ 39.164406] ? _cond_resched+0x14/0x30 [ 39.164421] ? selinux_file_permission+0x82/0x460 [ 39.164446] ? rw_verify_area+0xe5/0x2b0 [ 39.164452] ? __fdget_raw+0x20/0x20 [ 39.164465] vfs_write+0x18f/0x510 [ 39.164480] SyS_write+0xef/0x220 [ 39.164493] ? SyS_read+0x220/0x220 [ 39.164499] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 39.164509] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 39.164528] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 39.164534] RIP: 0033:0x452a39 [ 39.164538] RSP: 002b:00007f9e55414c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000001 [ 39.164545] RAX: ffffffffffffffda RBX: 00007f9e55415700 RCX: 0000000000452a39 [ 39.164550] RDX: 000000000000005a RSI: 000000002077f000 RDI: 0000000000000005 [ 39.164554] RBP: 00007ffc6e18ab90 R08: 0000000000000000 R09: 0000000000000000 [ 39.164557] R10: 0000000000000000 R11: 0000000000000212 R12: 0000000000000000 [ 39.164561] R13: 00007ffc6e18ab0f R14: 00007f9e554159c0 R15: 000000000000000a [ 39.274316] BUG: please report to dccp@vger.kernel.org => prev = 0, last = 0 at net/dccp/ccids/lib/packet_history.c:425/tfrc_rx_hist_sample_rtt() [ 39.274328] CPU: 0 PID: 3414 Comm: syz-executor1 Not tainted 4.15.0-rc2+ #210 [ 39.274332] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 39.274335] Call Trace: [ 39.274338] [ 39.274350] dump_stack+0x194/0x257 [ 39.274363] ? arch_local_irq_restore+0x53/0x53 [ 39.274372] ? tfrc_rx_handle_loss+0xb38/0x24d0 [ 39.274382] ? __lock_is_held+0xbc/0x140 [ 39.274401] tfrc_rx_hist_sample_rtt+0x407/0x4d0 [ 39.274416] ccid3_hc_rx_packet_recv+0x690/0xea7 [ 39.274423] ? dccp_parse_options+0x3d8/0x1030 [ 39.274441] ? ccid3_hc_tx_packet_recv+0xd20/0xd20 [ 39.274450] dccp_deliver_input_to_ccids+0xd9/0x250 [ 39.274463] dccp_rcv_established+0x88/0xb0 [ 39.274474] dccp_v4_do_rcv+0x12f/0x160 [ 39.274489] __sk_receive_skb+0x33e/0xc20 [ 39.274505] ? sk_free+0x40/0x40 [ 39.274518] ? sock_edemux+0x40/0x40 [ 39.274524] ? skb_send_sock+0x50/0x50 [ 39.274534] ? refcount_sub_and_test+0x115/0x1b0 [ 39.274554] ? dccp_invalid_packet+0x55/0x7c0 [ 39.274572] dccp_v4_rcv+0xef1/0x1c00 [ 39.274601] ? dccp_v4_err+0x1550/0x1550 [ 39.274606] ? find_held_lock+0x39/0x1d0 [ 39.274619] ? lock_release+0xda0/0xda0 [ 39.274632] ? __lock_is_held+0xbc/0x140 [ 39.274659] ip_local_deliver_finish+0x2e2/0xba0 [ 39.274675] ? inet_del_offload+0x40/0x40 [ 39.274700] ip_local_deliver+0x1ce/0x6e0 [ 39.274710] ? ip_call_ra_chain+0x6d0/0x6d0 [ 39.274730] ? print_usage_bug+0x3f0/0x3f0 [ 39.274741] ? update_cfs_rq_load_avg.part.70+0x2d0/0x2d0 [ 39.274754] ? reweight_entity+0x11b0/0x11b0 [ 39.274767] ip_rcv_finish+0x887/0x19a0 [ 39.274786] ? ip_local_deliver_finish+0xba0/0xba0 [ 39.274800] ? lock_downgrade+0x980/0x980 [ 39.274809] ? ip_rcv+0xc80/0x1820 [ 39.274821] ? debug_check_no_locks_freed+0x3d0/0x3d0 [ 39.274833] ? lock_release+0xda0/0xda0 [ 39.274846] ? __lock_is_held+0xbc/0x140 [ 39.274872] ip_rcv+0xc3f/0x1820 [ 39.274890] ? ip_local_deliver+0x6e0/0x6e0 [ 39.274917] ? __lock_is_held+0xbc/0x140 [ 39.274936] ? ip_local_deliver+0x6e0/0x6e0 [ 39.274948] __netif_receive_skb_core+0x1a3e/0x3450 [ 39.274954] ? __lock_acquire+0x6e9/0x47f0 [ 39.274976] ? nf_ingress+0x9f0/0x9f0 [ 39.275018] ? debug_check_no_locks_freed+0x3d0/0x3d0 [ 39.275025] ? find_held_lock+0x39/0x1d0 [ 39.275053] ? __lock_acquire+0x6e9/0x47f0 [ 39.275068] ? check_noncircular+0x20/0x20 [ 39.275080] ? check_noncircular+0x20/0x20 [ 39.275088] ? check_noncircular+0x20/0x20 [ 39.275106] ? debug_check_no_locks_freed+0x3d0/0x3d0 [ 39.275116] ? trace_hardirqs_on_caller+0x19e/0x5c0 [ 39.275140] ? find_held_lock+0x39/0x1d0 [ 39.275159] ? print_usage_bug+0x3f0/0x3f0 [ 39.275175] ? lock_acquire+0x1d5/0x580 [ 39.275182] ? process_backlog+0x1ab/0x740 [ 39.275200] ? lock_release+0xda0/0xda0 [ 39.275206] ? mark_held_locks+0xb2/0x100 [ 39.275230] __netif_receive_skb+0x2c/0x1b0 [ 39.275237] ? __netif_receive_skb+0x2c/0x1b0 [ 39.275248] process_backlog+0x203/0x740 [ 39.275254] ? mark_held_locks+0xb2/0x100 [ 39.275277] net_rx_action+0x792/0x1910 [ 39.275306] ? napi_complete_done+0x6c0/0x6c0 [ 39.275313] ? find_held_lock+0x39/0x1d0 [ 39.275332] ? print_usage_bug+0x3f0/0x3f0 [ 39.275351] ? __run_timers+0x1ce/0xb60 [ 39.275370] ? lock_release+0xda0/0xda0 [ 39.275387] ? mark_held_locks+0xb2/0x100 [ 39.275397] ? _raw_spin_unlock_irq+0x27/0x70 [ 39.275408] ? trace_hardirqs_on_caller+0x19e/0x5c0 [ 39.275418] ? trace_hardirqs_on+0xd/0x10 [ 39.275425] ? _raw_spin_unlock_irq+0x27/0x70 [ 39.275432] ? __run_timers+0x16f/0xb60 [ 39.275438] ? check_noncircular+0x20/0x20 [ 39.275454] ? lock_downgrade+0x980/0x980 [ 39.275466] ? del_timer_sync+0x240/0x240 [ 39.275476] ? rebalance_domains+0xcc0/0xcc0 [ 39.275497] ? __lock_is_held+0xbc/0x140 [ 39.275520] ? check_noncircular+0x20/0x20 [ 39.275530] ? print_usage_bug+0x3f0/0x3f0 [ 39.275553] ? __irqentry_text_end+0x4/0x4 [ 39.275562] ? do_timer+0x50/0x50 [ 39.275579] ? __lock_is_held+0xbc/0x140 [ 39.275608] __do_softirq+0x29d/0xbb2 [ 39.275614] ? task_prio+0x40/0x40 [ 39.275635] ? __irqentry_text_end+0x4/0x4 [ 39.275641] ? irq_exit+0x103/0x210 [ 39.275650] ? smp_apic_timer_interrupt+0x16b/0x700 [ 39.275656] ? smp_reschedule_interrupt+0xe6/0x670 [ 39.275665] ? smp_call_function_single_interrupt+0x640/0x640 [ 39.275673] ? _raw_spin_lock+0x32/0x40 [ 39.275691] ? handle_edge_irq+0x2b4/0x7c0 [ 39.275699] ? task_prio+0x40/0x40 [ 39.275721] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 39.275739] do_softirq_own_stack+0x2a/0x40 [ 39.275743] [ 39.275750] do_softirq.part.19+0x14d/0x190 [ 39.275758] ? ip_finish_output2+0x87a/0x1460 [ 39.275765] __local_bh_enable_ip+0x1ee/0x230 [ 39.275776] ip_finish_output2+0x8ad/0x1460 [ 39.275784] ? check_noncircular+0x20/0x20 [ 39.275798] ? dst_output+0x140/0x140 [ 39.275807] ? check_noncircular+0x20/0x20 [ 39.275822] ? ip_route_input_noref+0x1e0/0x1e0 [ 39.275831] ? xfrm_lookup+0x71a/0x23f0 [ 39.275846] ? ipv4_mtu+0x28c/0x3d0 [ 39.275863] ? __lock_is_held+0xbc/0x140 [ 39.275889] ip_finish_output+0x85e/0xd10 [ 39.275895] ? ip_finish_output+0x85e/0xd10 [ 39.275907] ? ip_fragment.constprop.49+0x200/0x200 [ 39.275930] ? nf_hook_slow+0xd3/0x1a0 [ 39.275947] ip_output+0x1cc/0x860 [ 39.275958] ? ip_mc_output+0x1350/0x1350 [ 39.275982] ? ip_fragment.constprop.49+0x200/0x200 [ 39.276003] ip_local_out+0x95/0x160 [ 39.276017] ip_queue_xmit+0x8c6/0x18e0 [ 39.276037] ? ip_build_and_send_pkt+0xc30/0xc30 [ 39.276043] ? skb_send_sock+0x50/0x50 [ 39.276049] ? reqsk_fastopen_remove+0x581/0x610 [ 39.276056] ? dccp_insert_option_padding+0xad/0xd0 [ 39.276068] ? dccp_insert_options+0x20f/0xcf0 [ 39.276082] ? dccp_v4_send_check+0x181/0x3b0 [ 39.276098] dccp_transmit_skb+0x9ac/0x10f0 [ 39.276121] dccp_xmit_packet+0x20f/0x730 [ 39.276134] ? dccp_send_ack+0x350/0x350 [ 39.276144] ? ccid3_hc_tx_send_packet+0x2de/0x840 [ 39.276163] dccp_write_xmit+0x17d/0x1d0 [ 39.276177] dccp_sendmsg+0x6d0/0xa80 [ 39.276186] ? lock_downgrade+0x980/0x980 [ 39.276196] ? avc_has_perm+0xd0/0x680 [ 39.276210] ? compat_dccp_getsockopt+0x70/0x70 [ 39.276216] ? sock_has_perm+0x29c/0x400 [ 39.276230] ? selinux_secmark_relabel_packet+0xc0/0xc0 [ 39.276240] ? lock_release+0xda0/0xda0 [ 39.276261] inet_sendmsg+0x11f/0x5e0 [ 39.276273] ? inet_recvmsg+0x5f0/0x5f0 [ 39.276285] ? selinux_socket_sendmsg+0x36/0x40 [ 39.276294] ? security_socket_sendmsg+0x89/0xb0 [ 39.276303] ? inet_recvmsg+0x5f0/0x5f0 [ 39.276314] sock_sendmsg+0xca/0x110 [ 39.276330] sock_write_iter+0x320/0x5e0 [ 39.276343] ? sock_sendmsg+0x110/0x110 [ 39.276367] ? iov_iter_init+0xaf/0x1d0 [ 39.276382] __vfs_write+0x68a/0x970 [ 39.276396] ? kernel_read+0x120/0x120 [ 39.276402] ? bpf_fd_pass+0x280/0x280 [ 39.276417] ? _cond_resched+0x14/0x30 [ 39.276432] ? selinux_file_permission+0x82/0x460 [ 39.276457] ? rw_verify_area+0xe5/0x2b0 [ 39.276463] ? __fdget_raw+0x20/0x20 [ 39.276476] vfs_write+0x18f/0x510 [ 39.276492] SyS_write+0xef/0x220 [ 39.276505] ? SyS_read+0x220/0x220 [ 39.276511] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 39.276521] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 39.276539] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 39.276545] RIP: 0033:0x452a39 [ 39.276549] RSP: 002b:00007fe376789c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000001 [ 39.276557] RAX: ffffffffffffffda RBX: 0000000000758020 RCX: 0000000000452a39 [ 39.276561] RDX: 000000000000005a RSI: 000000002077f000 RDI: 0000000000000005 [ 39.276565] RBP: 0000000000000471 R08: 0000000000000000 R09: 0000000000000000 [ 39.276569] R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f3b38 [ 39.276573] R13: 00000000ffffffff R14: 00007fe37678a6d4 R15: 0000000000000000 [ 39.394518] BUG: please report to dccp@vger.kernel.org => prev = 0, last = 0 at net/dccp/ccids/lib/packet_history.c:425/tfrc_rx_hist_sample_rtt() [ 39.394526] CPU: 0 PID: 3449 Comm: syz-executor2 Not tainted 4.15.0-rc2+ #210 [ 39.394530] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 39.394533] Call Trace: [ 39.394536] [ 39.394548] dump_stack+0x194/0x257 [ 39.394561] ? arch_local_irq_restore+0x53/0x53 [ 39.394571] ? tfrc_rx_handle_loss+0xb38/0x24d0 [ 39.394580] ? __lock_is_held+0xbc/0x140 [ 39.394599] tfrc_rx_hist_sample_rtt+0x407/0x4d0 [ 39.394614] ccid3_hc_rx_packet_recv+0x690/0xea7 [ 39.394622] ? dccp_parse_options+0x3d8/0x1030 [ 39.394639] ? ccid3_hc_tx_packet_recv+0xd20/0xd20 [ 39.394649] dccp_deliver_input_to_ccids+0xd9/0x250 [ 39.394662] dccp_rcv_established+0x88/0xb0 [ 39.394673] dccp_v4_do_rcv+0x12f/0x160 [ 39.394688] __sk_receive_skb+0x33e/0xc20 [ 39.394704] ? sk_free+0x40/0x40 [ 39.394718] ? sock_edemux+0x40/0x40 [ 39.394724] ? skb_send_sock+0x50/0x50 [ 39.394732] ? refcount_sub_and_test+0x115/0x1b0 [ 39.394752] ? dccp_invalid_packet+0x55/0x7c0 [ 39.394770] dccp_v4_rcv+0xef1/0x1c00 [ 39.394798] ? dccp_v4_err+0x1550/0x1550 [ 39.394804] ? find_held_lock+0x39/0x1d0 [ 39.394816] ? lock_release+0xda0/0xda0 [ 39.394829] ? __lock_is_held+0xbc/0x140 [ 39.394856] ip_local_deliver_finish+0x2e2/0xba0 [ 39.394872] ? inet_del_offload+0x40/0x40 [ 39.394896] ip_local_deliver+0x1ce/0x6e0 [ 39.394907] ? ip_call_ra_chain+0x6d0/0x6d0 [ 39.394926] ? print_usage_bug+0x3f0/0x3f0 [ 39.394950] ip_rcv_finish+0x887/0x19a0 [ 39.394968] ? ip_local_deliver_finish+0xba0/0xba0 [ 39.394983] ? lock_downgrade+0x980/0x980 [ 39.394992] ? ip_rcv+0xc80/0x1820 [ 39.395006] ? debug_check_no_locks_freed+0x3d0/0x3d0 [ 39.395019] ? lock_release+0xda0/0xda0 [ 39.395032] ? __lock_is_held+0xbc/0x140 [ 39.395059] ip_rcv+0xc3f/0x1820 [ 39.395077] ? ip_local_deliver+0x6e0/0x6e0 [ 39.395084] ? rb_insert_color+0x1580/0x1580 [ 39.395093] ? print_usage_bug+0x3f0/0x3f0 [ 39.395114] ? __lock_is_held+0xbc/0x140 [ 39.395133] ? ip_local_deliver+0x6e0/0x6e0 [ 39.395146] __netif_receive_skb_core+0x1a3e/0x3450 [ 39.395152] ? __lock_acquire+0x6e9/0x47f0 [ 39.395174] ? nf_ingress+0x9f0/0x9f0 [ 39.395213] ? debug_check_no_locks_freed+0x3d0/0x3d0 [ 39.395248] ? check_noncircular+0x20/0x20 [ 39.395259] ? fastpath_timer_check+0x7d5/0xa70 [ 39.395272] ? check_noncircular+0x20/0x20 [ 39.395280] ? check_noncircular+0x20/0x20 [ 39.395287] ? check_noncircular+0x20/0x20 [ 39.395296] ? update_curr+0x415/0x9a0 [ 39.395313] ? print_usage_bug+0x3f0/0x3f0 [ 39.395326] ? find_held_lock+0x39/0x1d0 [ 39.395346] ? find_held_lock+0x39/0x1d0 [ 39.395369] ? print_usage_bug+0x3f0/0x3f0 [ 39.395387] ? lock_acquire+0x1d5/0x580 [ 39.395394] ? process_backlog+0x1ab/0x740 [ 39.395414] ? lock_release+0xda0/0xda0 [ 39.395443] __netif_receive_skb+0x2c/0x1b0 [ 39.395450] ? __netif_receive_skb+0x2c/0x1b0 [ 39.395462] process_backlog+0x203/0x740 [ 39.395467] ? mark_held_locks+0xb2/0x100 [ 39.395489] net_rx_action+0x792/0x1910 [ 39.395517] ? napi_complete_done+0x6c0/0x6c0 [ 39.395524] ? find_held_lock+0x39/0x1d0 [ 39.395539] ? print_usage_bug+0x3f0/0x3f0 [ 39.395556] ? __run_timers+0x1ce/0xb60 [ 39.395573] ? lock_release+0xda0/0xda0 [ 39.395589] ? mark_held_locks+0xb2/0x100 [ 39.395601] ? _raw_spin_unlock_irq+0x27/0x70 [ 39.395612] ? trace_hardirqs_on_caller+0x19e/0x5c0 [ 39.395621] ? trace_hardirqs_on+0xd/0x10 [ 39.395629] ? _raw_spin_unlock_irq+0x27/0x70 [ 39.395636] ? __run_timers+0x16f/0xb60 [ 39.395652] ? lock_downgrade+0x980/0x980 [ 39.395663] ? del_timer_sync+0x240/0x240 [ 39.395672] ? lock_downgrade+0x980/0x980 [ 39.395694] ? pvclock_read_flags+0x160/0x160 [ 39.395701] ? find_held_lock+0x39/0x1d0 [ 39.395720] ? check_noncircular+0x20/0x20 [ 39.395729] ? print_usage_bug+0x3f0/0x3f0 [ 39.395743] ? ktime_get_resolution_ns+0x300/0x300 [ 39.395757] ? check_noncircular+0x20/0x20 [ 39.395766] ? do_timer+0x50/0x50 [ 39.395782] ? __lock_is_held+0xbc/0x140 [ 39.395810] __do_softirq+0x29d/0xbb2 [ 39.395816] ? task_prio+0x40/0x40 [ 39.395837] ? __irqentry_text_end+0x4/0x4 [ 39.395847] ? irq_exit+0x103/0x210 [ 39.395856] ? smp_apic_timer_interrupt+0x16b/0x700 [ 39.395863] ? smp_reschedule_interrupt+0xe6/0x670 [ 39.395872] ? smp_call_function_single_interrupt+0x640/0x640 [ 39.395880] ? _raw_spin_lock+0x32/0x40 [ 39.395897] ? handle_edge_irq+0x2b4/0x7c0 [ 39.395905] ? task_prio+0x40/0x40 [ 39.395927] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 39.395945] do_softirq_own_stack+0x2a/0x40 [ 39.395949] [ 39.395957] do_softirq.part.19+0x14d/0x190 [ 39.395964] ? ip_finish_output2+0x87a/0x1460 [ 39.395972] __local_bh_enable_ip+0x1ee/0x230 [ 39.395982] ip_finish_output2+0x8ad/0x1460 [ 39.395991] ? check_noncircular+0x20/0x20 [ 39.396005] ? dst_output+0x140/0x140 [ 39.396014] ? check_noncircular+0x20/0x20 [ 39.396032] ? ip_route_input_noref+0x1e0/0x1e0 [ 39.396042] ? xfrm_lookup+0x71a/0x23f0 [ 39.396057] ? ipv4_mtu+0x28c/0x3d0 [ 39.396073] ? __lock_is_held+0xbc/0x140 [ 39.396098] ip_finish_output+0x85e/0xd10 [ 39.396104] ? ip_finish_output+0x85e/0xd10 [ 39.396116] ? ip_fragment.constprop.49+0x200/0x200 [ 39.396141] ? nf_hook_slow+0xd3/0x1a0 [ 39.396156] ip_output+0x1cc/0x860 [ 39.396168] ? ip_mc_output+0x1350/0x1350 [ 39.396189] ? ip_fragment.constprop.49+0x200/0x200 [ 39.396208] ip_local_out+0x95/0x160 [ 39.396222] ip_queue_xmit+0x8c6/0x18e0 [ 39.396240] ? ip_build_and_send_pkt+0xc30/0xc30 [ 39.396247] ? skb_send_sock+0x50/0x50 [ 39.396254] ? reqsk_fastopen_remove+0x581/0x610 [ 39.396262] ? dccp_insert_option_padding+0xad/0xd0 [ 39.396273] ? dccp_insert_options+0x20f/0xcf0 [ 39.396287] ? dccp_v4_send_check+0x181/0x3b0 [ 39.396301] dccp_transmit_skb+0x9ac/0x10f0 [ 39.396329] dccp_xmit_packet+0x20f/0x730 [ 39.396342] ? dccp_send_ack+0x350/0x350 [ 39.396352] ? ccid3_hc_tx_send_packet+0x2de/0x840 [ 39.396369] dccp_write_xmit+0x17d/0x1d0 [ 39.396383] dccp_sendmsg+0x6d0/0xa80 [ 39.396392] ? lock_downgrade+0x980/0x980 [ 39.396404] ? avc_has_perm+0xd0/0x680 [ 39.396416] ? compat_dccp_getsockopt+0x70/0x70 [ 39.396423] ? sock_has_perm+0x29c/0x400 [ 39.396437] ? selinux_secmark_relabel_packet+0xc0/0xc0 [ 39.396447] ? lock_release+0xda0/0xda0 [ 39.396468] inet_sendmsg+0x11f/0x5e0 [ 39.396482] ? inet_recvmsg+0x5f0/0x5f0 [ 39.396496] ? selinux_socket_sendmsg+0x36/0x40 [ 39.396505] ? security_socket_sendmsg+0x89/0xb0 [ 39.396514] ? inet_recvmsg+0x5f0/0x5f0 [ 39.396526] sock_sendmsg+0xca/0x110 [ 39.396538] sock_write_iter+0x320/0x5e0 [ 39.396551] ? sock_sendmsg+0x110/0x110 [ 39.396573] ? iov_iter_init+0xaf/0x1d0 [ 39.396588] __vfs_write+0x68a/0x970 [ 39.396601] ? kernel_read+0x120/0x120 [ 39.396607] ? bpf_fd_pass+0x280/0x280 [ 39.396622] ? _cond_resched+0x14/0x30 [ 39.396636] ? selinux_file_permission+0x82/0x460 [ 39.396660] ? rw_verify_area+0xe5/0x2b0 [ 39.396667] ? __fdget_raw+0x20/0x20 [ 39.396680] vfs_write+0x18f/0x510 [ 39.396695] SyS_write+0xef/0x220 [ 39.396710] ? SyS_read+0x220/0x220 [ 39.396715] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 39.396725] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 39.396742] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 39.396748] RIP: 0033:0x452a39 [ 39.396753] RSP: 002b:00007fbfe66aac58 EFLAGS: 00000212 ORIG_RAX: 0000000000000001 [ 39.396760] RAX: ffffffffffffffda RBX: 00007fbfe66ab700 RCX: 0000000000452a39 [ 39.396764] RDX: 000000000000005a RSI: 000000002077f000 RDI: 0000000000000005 [ 39.396768] RBP: 00007ffd503dc890 R08: 0000000000000000 R09: 0000000000000000 [ 39.396771] R10: 0000000000000000 R11: 0000000000000212 R12: 0000000000000000 [ 39.396774] R13: 00007ffd503dc80f R14: 00007fbfe66ab9c0 R15: 000000000000000a [ 39.408783] BUG: please report to dccp@vger.kernel.org => prev = 0, last = 0 at net/dccp/ccids/lib/packet_history.c:425/tfrc_rx_hist_sample_rtt() [ 39.408792] CPU: 1 PID: 3450 Comm: syz-executor6 Not tainted 4.15.0-rc2+ #210 [ 39.408797] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 39.408799] Call Trace: [ 39.408803] [ 39.408819] dump_stack+0x194/0x257 [ 39.408833] ? arch_local_irq_restore+0x53/0x53 [ 39.408842] ? tfrc_rx_handle_loss+0xb38/0x24d0 [ 39.408852] ? __lock_is_held+0xbc/0x140 [ 39.408871] tfrc_rx_hist_sample_rtt+0x407/0x4d0 [ 39.408889] ccid3_hc_rx_packet_recv+0x690/0xea7 [ 39.408896] ? dccp_parse_options+0x3d8/0x1030 [ 39.408914] ? ccid3_hc_tx_packet_recv+0xd20/0xd20 [ 39.408923] dccp_deliver_input_to_ccids+0xd9/0x250 [ 39.408936] dccp_rcv_established+0x88/0xb0 [ 39.408947] dccp_v4_do_rcv+0x12f/0x160 [ 39.408962] __sk_receive_skb+0x33e/0xc20 [ 39.408979] ? sk_free+0x40/0x40 [ 39.408992] ? sock_edemux+0x40/0x40 [ 39.408998] ? skb_send_sock+0x50/0x50 [ 39.409021] ? dccp_invalid_packet+0x55/0x7c0 [ 39.409039] dccp_v4_rcv+0xef1/0x1c00 [ 39.409068] ? dccp_v4_err+0x1550/0x1550 [ 39.409074] ? find_held_lock+0x39/0x1d0 [ 39.409086] ? lock_release+0xda0/0xda0 [ 39.409099] ? __lock_is_held+0xbc/0x140 [ 39.409126] ip_local_deliver_finish+0x2e2/0xba0 [ 39.409142] ? inet_del_offload+0x40/0x40 [ 39.409166] ip_local_deliver+0x1ce/0x6e0 [ 39.409177] ? ip_call_ra_chain+0x6d0/0x6d0 [ 39.409197] ? print_usage_bug+0x3f0/0x3f0 [ 39.409204] ? __lock_is_held+0xbc/0x140 [ 39.409226] ip_rcv_finish+0x887/0x19a0 [ 39.409244] ? ip_local_deliver_finish+0xba0/0xba0 [ 39.409259] ? lock_downgrade+0x980/0x980 [ 39.409268] ? ip_rcv+0xc80/0x1820 [ 39.409279] ? account_entity_enqueue+0x3c8/0x6e0 [ 39.409293] ? lock_release+0xda0/0xda0 [ 39.409307] ? __lock_is_held+0xbc/0x140 [ 39.409333] ip_rcv+0xc3f/0x1820 [ 39.409352] ? ip_local_deliver+0x6e0/0x6e0 [ 39.409357] ? check_noncircular+0x20/0x20 [ 39.409367] ? print_usage_bug+0x3f0/0x3f0 [ 39.409376] ? check_noncircular+0x20/0x20 [ 39.409393] ? __lock_is_held+0xbc/0x140 [ 39.409412] ? ip_local_deliver+0x6e0/0x6e0 [ 39.409424] __netif_receive_skb_core+0x1a3e/0x3450 [ 39.409430] ? __lock_acquire+0x6e9/0x47f0 [ 39.409452] ? nf_ingress+0x9f0/0x9f0 [ 39.409491] ? debug_check_no_locks_freed+0x3d0/0x3d0 [ 39.409499] ? check_noncircular+0x20/0x20 [ 39.409538] ? __lock_is_held+0xbc/0x140 [ 39.409549] ? check_noncircular+0x20/0x20 [ 39.409568] ? __lock_is_held+0xbc/0x140 [ 39.409598] ? find_held_lock+0x39/0x1d0 [ 39.409618] ? print_usage_bug+0x3f0/0x3f0 [ 39.409634] ? lock_acquire+0x1d5/0x580 [ 39.409641] ? process_backlog+0x1ab/0x740 [ 39.409659] ? lock_release+0xda0/0xda0 [ 39.409666] ? lock_release+0xda0/0xda0 [ 39.409689] __netif_receive_skb+0x2c/0x1b0 [ 39.409696] ? __netif_receive_skb+0x2c/0x1b0 [ 39.409708] process_backlog+0x203/0x740 [ 39.409714] ? mark_held_locks+0xb2/0x100 [ 39.409737] net_rx_action+0x792/0x1910 [ 39.409765] ? napi_complete_done+0x6c0/0x6c0 [ 39.409789] ? rcu_read_lock_sched_held+0x108/0x120 [ 39.409798] ? rcu_process_callbacks+0x3a0/0x17d0 [ 39.409813] ? check_noncircular+0x20/0x20 [ 39.409831] ? note_gp_changes+0x650/0x650 [ 39.409842] ? timerqueue_add+0x1e9/0x280 [ 39.409860] ? enqueue_hrtimer+0x162/0x490 [ 39.409873] ? find_held_lock+0x39/0x1d0 [ 39.409887] ? check_noncircular+0x20/0x20 [ 39.409896] ? print_usage_bug+0x3f0/0x3f0 [ 39.409907] ? lock_downgrade+0x980/0x980 [ 39.409916] ? lock_acquire+0x1d5/0x580 [ 39.409924] ? clockevents_program_event+0x163/0x2e0 [ 39.409934] ? lock_downgrade+0x980/0x980 [ 39.409956] ? __lock_is_held+0xbc/0x140 [ 39.409979] ? check_noncircular+0x20/0x20 [ 39.409989] ? print_usage_bug+0x3f0/0x3f0 [ 39.410012] ? __irqentry_text_end+0x4/0x4 [ 39.410022] ? do_timer+0x50/0x50 [ 39.410039] ? __lock_is_held+0xbc/0x140 [ 39.410068] __do_softirq+0x29d/0xbb2 [ 39.410073] ? task_prio+0x40/0x40 [ 39.410095] ? __irqentry_text_end+0x4/0x4 [ 39.410101] ? irq_exit+0x103/0x210 [ 39.410110] ? smp_apic_timer_interrupt+0x16b/0x700 [ 39.410117] ? smp_reschedule_interrupt+0xe6/0x670 [ 39.410126] ? smp_call_function_single_interrupt+0x640/0x640 [ 39.410134] ? _raw_spin_lock+0x32/0x40 [ 39.410151] ? handle_edge_irq+0x2b4/0x7c0 [ 39.410159] ? task_prio+0x40/0x40 [ 39.410181] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 39.410200] do_softirq_own_stack+0x2a/0x40 [ 39.410204] [ 39.410212] do_softirq.part.19+0x14d/0x190 [ 39.410219] ? ip_finish_output2+0x87a/0x1460 [ 39.410226] __local_bh_enable_ip+0x1ee/0x230 [ 39.410237] ip_finish_output2+0x8ad/0x1460 [ 39.410245] ? check_noncircular+0x20/0x20 [ 39.410259] ? dst_output+0x140/0x140 [ 39.410267] ? check_noncircular+0x20/0x20 [ 39.410284] ? ip_route_input_noref+0x1e0/0x1e0 [ 39.410293] ? xfrm_lookup+0x71a/0x23f0 [ 39.410308] ? ipv4_mtu+0x28c/0x3d0 [ 39.410325] ? __lock_is_held+0xbc/0x140 [ 39.410351] ip_finish_output+0x85e/0xd10 [ 39.410357] ? ip_finish_output+0x85e/0xd10 [ 39.410370] ? ip_fragment.constprop.49+0x200/0x200 [ 39.410392] ? nf_hook_slow+0xd3/0x1a0 [ 39.410409] ip_output+0x1cc/0x860 [ 39.410421] ? ip_mc_output+0x1350/0x1350 [ 39.410445] ? ip_fragment.constprop.49+0x200/0x200 [ 39.410466] ip_local_out+0x95/0x160 [ 39.410480] ip_queue_xmit+0x8c6/0x18e0 [ 39.410500] ? ip_build_and_send_pkt+0xc30/0xc30 [ 39.410506] ? skb_send_sock+0x50/0x50 [ 39.410512] ? reqsk_fastopen_remove+0x581/0x610 [ 39.410519] ? dccp_insert_option_padding+0xad/0xd0 [ 39.410531] ? dccp_insert_options+0x20f/0xcf0 [ 39.410544] ? dccp_v4_send_check+0x181/0x3b0 [ 39.410560] dccp_transmit_skb+0x9ac/0x10f0 [ 39.410583] dccp_xmit_packet+0x20f/0x730 [ 39.410596] ? dccp_send_ack+0x350/0x350 [ 39.410606] ? ccid3_hc_tx_send_packet+0x2de/0x840 [ 39.410626] dccp_write_xmit+0x17d/0x1d0 [ 39.410640] dccp_sendmsg+0x6d0/0xa80 [ 39.410648] ? lock_downgrade+0x980/0x980 [ 39.410659] ? avc_has_perm+0xd0/0x680 [ 39.410673] ? compat_dccp_getsockopt+0x70/0x70 [ 39.410679] ? sock_has_perm+0x29c/0x400 [ 39.410692] ? selinux_secmark_relabel_packet+0xc0/0xc0 [ 39.410703] ? lock_release+0xda0/0xda0 [ 39.410725] inet_sendmsg+0x11f/0x5e0 [ 39.410737] ? inet_recvmsg+0x5f0/0x5f0 [ 39.410749] ? selinux_socket_sendmsg+0x36/0x40 [ 39.410758] ? security_socket_sendmsg+0x89/0xb0 [ 39.410766] ? inet_recvmsg+0x5f0/0x5f0 [ 39.410778] sock_sendmsg+0xca/0x110 [ 39.410790] sock_write_iter+0x320/0x5e0 [ 39.410803] ? sock_sendmsg+0x110/0x110 [ 39.410831] ? iov_iter_init+0xaf/0x1d0 [ 39.410846] __vfs_write+0x68a/0x970 [ 39.410860] ? kernel_read+0x120/0x120 [ 39.410866] ? bpf_fd_pass+0x280/0x280 [ 39.410881] ? _cond_resched+0x14/0x30 [ 39.410896] ? selinux_file_permission+0x82/0x460 [ 39.410920] ? rw_verify_area+0xe5/0x2b0 [ 39.410926] ? __fdget_raw+0x20/0x20 [ 39.410939] vfs_write+0x18f/0x510 [ 39.410955] SyS_write+0xef/0x220 [ 39.410967] ? SyS_read+0x220/0x220 [ 39.410974] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 39.410984] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 39.411002] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 39.411008] RIP: 0033:0x452a39 [ 39.411012] RSP: 002b:00007ff4ae741c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000001 [ 39.411020] RAX: ffffffffffffffda RBX: 00007ff4ae742700 RCX: 0000000000452a39 [ 39.411024] RDX: 000000000000005a RSI: 000000002077f000 RDI: 0000000000000005 [ 39.411028] RBP: 00007ffe84eb1010 R08: 0000000000000000 R09: 0000000000000000 [ 39.411032] R10: 0000000000000000 R11: 0000000000000212 R12: 0000000000000000 [ 39.411036] R13: 00007ffe84eb0f8f R14: 00007ff4ae7429c0 R15: 000000000000000a [ 42.308555] BUG: please report to dccp@vger.kernel.org => prev = 0, last = 0 at net/dccp/ccids/lib/packet_history.c:425/tfrc_rx_hist_sample_rtt() [ 42.310194] BUG: please report to dccp@vger.kernel.org => prev = 0, last = 0 at net/dccp/ccids/lib/packet_history.c:425/tfrc_rx_hist_sample_rtt() [ 42.310202] CPU: 0 PID: 3479 Comm: syz-executor7 Not tainted 4.15.0-rc2+ #210 [ 42.310207] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 42.310209] Call Trace: [ 42.310213] [ 42.310224] dump_stack+0x194/0x257 [ 42.310237] ? arch_local_irq_restore+0x53/0x53 [ 42.310247] ? tfrc_rx_handle_loss+0xb38/0x24d0 [ 42.310256] ? __lock_is_held+0xbc/0x140 [ 42.310275] tfrc_rx_hist_sample_rtt+0x407/0x4d0 [ 42.310290] ccid3_hc_rx_packet_recv+0x690/0xea7 [ 42.310297] ? dccp_parse_options+0x3d8/0x1030 [ 42.310315] ? ccid3_hc_tx_packet_recv+0xd20/0xd20 [ 42.310324] dccp_deliver_input_to_ccids+0xd9/0x250 [ 42.310337] dccp_rcv_established+0x88/0xb0 [ 42.310348] dccp_v4_do_rcv+0x12f/0x160 [ 42.310363] __sk_receive_skb+0x33e/0xc20 [ 42.310379] ? sk_free+0x40/0x40 [ 42.310392] ? sock_edemux+0x40/0x40 [ 42.310398] ? skb_send_sock+0x50/0x50 [ 42.310407] ? refcount_sub_and_test+0x115/0x1b0 [ 42.310427] ? dccp_invalid_packet+0x55/0x7c0 [ 42.310445] dccp_v4_rcv+0xef1/0x1c00 [ 42.310473] ? dccp_v4_err+0x1550/0x1550 [ 42.310479] ? find_held_lock+0x39/0x1d0 [ 42.310491] ? lock_release+0xda0/0xda0 [ 42.310504] ? __lock_is_held+0xbc/0x140 [ 42.310531] ip_local_deliver_finish+0x2e2/0xba0 [ 42.310547] ? inet_del_offload+0x40/0x40 [ 42.310571] ip_local_deliver+0x1ce/0x6e0 [ 42.310581] ? ip_call_ra_chain+0x6d0/0x6d0 [ 42.310600] ? print_usage_bug+0x3f0/0x3f0 [ 42.310610] ? print_usage_bug+0x3f0/0x3f0 [ 42.310629] ip_rcv_finish+0x887/0x19a0 [ 42.310647] ? ip_local_deliver_finish+0xba0/0xba0 [ 42.310662] ? lock_downgrade+0x980/0x980 [ 42.310671] ? ip_rcv+0xc80/0x1820 [ 42.310682] ? debug_check_no_locks_freed+0x3d0/0x3d0 [ 42.310694] ? lock_release+0xda0/0xda0 [ 42.310707] ? __lock_is_held+0xbc/0x140 [ 42.310734] ip_rcv+0xc3f/0x1820 [ 42.310752] ? ip_local_deliver+0x6e0/0x6e0 [ 42.310759] ? rb_insert_color+0x1580/0x1580 [ 42.310772] ? print_usage_bug+0x3f0/0x3f0 [ 42.310792] ? __lock_is_held+0xbc/0x140 [ 42.310812] ? ip_local_deliver+0x6e0/0x6e0 [ 42.310824] __netif_receive_skb_core+0x1a3e/0x3450 [ 42.310830] ? __lock_acquire+0x6e9/0x47f0 [ 42.310852] ? nf_ingress+0x9f0/0x9f0 [ 42.310891] ? debug_check_no_locks_freed+0x3d0/0x3d0 [ 42.310926] ? check_noncircular+0x20/0x20 [ 42.310938] ? fastpath_timer_check+0x7d5/0xa70 [ 42.310951] ? check_noncircular+0x20/0x20 [ 42.310962] ? check_noncircular+0x20/0x20 [ 42.310971] ? update_curr+0x415/0x9a0 [ 42.310985] ? print_usage_bug+0x3f0/0x3f0 [ 42.310998] ? find_held_lock+0x39/0x1d0 [ 42.311016] ? find_held_lock+0x39/0x1d0 [ 42.311036] ? print_usage_bug+0x3f0/0x3f0 [ 42.311052] ? lock_acquire+0x1d5/0x580 [ 42.311059] ? process_backlog+0x1ab/0x740 [ 42.311081] ? lock_release+0xda0/0xda0 [ 42.311107] __netif_receive_skb+0x2c/0x1b0 [ 42.311114] ? __netif_receive_skb+0x2c/0x1b0 [ 42.311125] process_backlog+0x203/0x740 [ 42.311131] ? mark_held_locks+0xb2/0x100 [ 42.311155] net_rx_action+0x792/0x1910 [ 42.311183] ? napi_complete_done+0x6c0/0x6c0 [ 42.311198] ? cpu_load_update_nohz_stop+0x2e0/0x2e0 [ 42.311210] ? do_raw_spin_trylock+0x190/0x190 [ 42.311227] ? check_noncircular+0x20/0x20 [ 42.311239] ? __lock_is_held+0xbc/0x140 [ 42.311256] ? timerqueue_add+0x1e9/0x280 [ 42.311273] ? enqueue_hrtimer+0x162/0x490 [ 42.311286] ? find_held_lock+0x39/0x1d0 [ 42.311311] ? lock_downgrade+0x980/0x980 [ 42.311319] ? lock_acquire+0x1d5/0x580 [ 42.311327] ? clockevents_program_event+0x163/0x2e0 [ 42.311336] ? lock_downgrade+0x980/0x980 [ 42.311359] ? pvclock_read_flags+0x160/0x160 [ 42.311366] ? find_held_lock+0x39/0x1d0 [ 42.311387] ? check_noncircular+0x20/0x20 [ 42.311397] ? print_usage_bug+0x3f0/0x3f0 [ 42.311409] ? ktime_get_resolution_ns+0x300/0x300 [ 42.311429] ? do_timer+0x50/0x50 [ 42.311445] ? __lock_is_held+0xbc/0x140 [ 42.311475] __do_softirq+0x29d/0xbb2 [ 42.311481] ? task_prio+0x40/0x40 [ 42.311502] ? __irqentry_text_end+0x4/0x4 [ 42.311509] ? irq_exit+0x103/0x210 [ 42.311519] ? smp_apic_timer_interrupt+0x16b/0x700 [ 42.311525] ? smp_reschedule_interrupt+0xe6/0x670 [ 42.311534] ? smp_call_function_single_interrupt+0x640/0x640 [ 42.311542] ? _raw_spin_lock+0x32/0x40 [ 42.311560] ? handle_edge_irq+0x2b4/0x7c0 [ 42.311568] ? task_prio+0x40/0x40 [ 42.311590] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 42.311609] do_softirq_own_stack+0x2a/0x40 [ 42.311613] [ 42.311620] do_softirq.part.19+0x14d/0x190 [ 42.311627] ? ip_finish_output2+0x87a/0x1460 [ 42.311635] __local_bh_enable_ip+0x1ee/0x230 [ 42.311646] ip_finish_output2+0x8ad/0x1460 [ 42.311654] ? check_noncircular+0x20/0x20 [ 42.311668] ? dst_output+0x140/0x140 [ 42.311677] ? check_noncircular+0x20/0x20 [ 42.311692] ? ip_route_input_noref+0x1e0/0x1e0 [ 42.311701] ? xfrm_lookup+0x71a/0x23f0 [ 42.311716] ? ipv4_mtu+0x28c/0x3d0 [ 42.311733] ? __lock_is_held+0xbc/0x140 [ 42.311759] ip_finish_output+0x85e/0xd10 [ 42.311764] ? ip_finish_output+0x85e/0xd10 [ 42.311776] ? ip_fragment.constprop.49+0x200/0x200 [ 42.311799] ? nf_hook_slow+0xd3/0x1a0 [ 42.311816] ip_output+0x1cc/0x860 [ 42.311828] ? ip_mc_output+0x1350/0x1350 [ 42.311852] ? ip_fragment.constprop.49+0x200/0x200 [ 42.311872] ip_local_out+0x95/0x160 [ 42.311887] ip_queue_xmit+0x8c6/0x18e0 [ 42.311907] ? ip_build_and_send_pkt+0xc30/0xc30 [ 42.311913] ? skb_send_sock+0x50/0x50 [ 42.311919] ? reqsk_fastopen_remove+0x581/0x610 [ 42.311925] ? dccp_insert_option_padding+0xad/0xd0 [ 42.311937] ? dccp_insert_options+0x20f/0xcf0 [ 42.311951] ? dccp_v4_send_check+0x181/0x3b0 [ 42.311966] dccp_transmit_skb+0x9ac/0x10f0 [ 42.311990] dccp_xmit_packet+0x20f/0x730 [ 42.312002] ? dccp_send_ack+0x350/0x350 [ 42.312012] ? ccid3_hc_tx_send_packet+0x2de/0x840 [ 42.312031] dccp_write_xmit+0x17d/0x1d0 [ 42.312046] dccp_sendmsg+0x6d0/0xa80 [ 42.312054] ? lock_downgrade+0x980/0x980 [ 42.312065] ? avc_has_perm+0xd0/0x680 [ 42.312082] ? compat_dccp_getsockopt+0x70/0x70 [ 42.312088] ? sock_has_perm+0x29c/0x400 [ 42.312101] ? selinux_secmark_relabel_packet+0xc0/0xc0 [ 42.312112] ? lock_release+0xda0/0xda0 [ 42.312134] inet_sendmsg+0x11f/0x5e0 [ 42.312146] ? inet_recvmsg+0x5f0/0x5f0 [ 42.312158] ? selinux_socket_sendmsg+0x36/0x40 [ 42.312167] ? security_socket_sendmsg+0x89/0xb0 [ 42.312175] ? inet_recvmsg+0x5f0/0x5f0 [ 42.312187] sock_sendmsg+0xca/0x110 [ 42.312200] sock_write_iter+0x320/0x5e0 [ 42.312212] ? sock_sendmsg+0x110/0x110 [ 42.312237] ? iov_iter_init+0xaf/0x1d0 [ 42.312252] __vfs_write+0x68a/0x970 [ 42.312266] ? kernel_read+0x120/0x120 [ 42.312271] ? bpf_fd_pass+0x280/0x280 [ 42.312286] ? _cond_resched+0x14/0x30 [ 42.312301] ? selinux_file_permission+0x82/0x460 [ 42.312326] ? rw_verify_area+0xe5/0x2b0 [ 42.312333] ? __fdget_raw+0x20/0x20 [ 42.312346] vfs_write+0x18f/0x510 [ 42.312361] SyS_write+0xef/0x220 [ 42.312374] ? SyS_read+0x220/0x220 [ 42.312380] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 42.312390] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 42.312409] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 42.312415] RIP: 0033:0x452a39 [ 42.312419] RSP: 002b:00007f9e55414c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000001 [ 42.312427] RAX: ffffffffffffffda RBX: 00007f9e55415700 RCX: 0000000000452a39 [ 42.312431] RDX: 000000000000005a RSI: 000000002077f000 RDI: 0000000000000005 [ 42.312435] RBP: 00007ffc6e18ab90 R08: 0000000000000000 R09: 0000000000000000 [ 42.312439] R10: 0000000000000000 R11: 0000000000000212 R12: 0000000000000000 [ 42.312443] R13: 00007ffc6e18ab0f R14: 00007f9e554159c0 R15: 000000000000000a [ 42.312766] BUG: please report to dccp@vger.kernel.org => prev = 0, last = 0 at net/dccp/ccids/lib/packet_history.c:425/tfrc_rx_hist_sample_rtt() [ 42.312773] CPU: 0 PID: 3482 Comm: syz-executor3 Not tainted 4.15.0-rc2+ #210 [ 42.312777] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 42.312780] Call Trace: [ 42.312782] [ 42.312790] dump_stack+0x194/0x257 [ 42.312802] ? arch_local_irq_restore+0x53/0x53 [ 42.312809] ? tfrc_rx_handle_loss+0xb38/0x24d0 [ 42.312818] ? __lock_is_held+0xbc/0x140 [ 42.312836] tfrc_rx_hist_sample_rtt+0x407/0x4d0 [ 42.312851] ccid3_hc_rx_packet_recv+0x690/0xea7 [ 42.312858] ? dccp_parse_options+0x3d8/0x1030 [ 42.312876] ? ccid3_hc_tx_packet_recv+0xd20/0xd20 [ 42.312885] dccp_deliver_input_to_ccids+0xd9/0x250 [ 42.312898] dccp_rcv_established+0x88/0xb0 [ 42.312909] dccp_v4_do_rcv+0x12f/0x160 [ 42.312929] __sk_receive_skb+0x33e/0xc20 [ 42.312956] ? sk_free+0x40/0x40 [ 42.312968] ? sock_edemux+0x40/0x40 [ 42.312974] ? skb_send_sock+0x50/0x50 [ 42.312982] ? refcount_sub_and_test+0x115/0x1b0 [ 42.313005] ? dccp_invalid_packet+0x55/0x7c0 [ 42.313031] dccp_v4_rcv+0xef1/0x1c00 [ 42.313067] ? dccp_v4_err+0x1550/0x1550 [ 42.313072] ? find_held_lock+0x39/0x1d0 [ 42.313088] ? lock_release+0xda0/0xda0 [ 42.313101] ? __lock_is_held+0xbc/0x140 [ 42.313131] ip_local_deliver_finish+0x2e2/0xba0 [ 42.313158] ? inet_del_offload+0x40/0x40 [ 42.313188] ip_local_deliver+0x1ce/0x6e0 [ 42.313198] ? ip_call_ra_chain+0x6d0/0x6d0 [ 42.313218] ? print_usage_bug+0x3f0/0x3f0 [ 42.313228] ? print_usage_bug+0x3f0/0x3f0 [ 42.313250] ip_rcv_finish+0x887/0x19a0 [ 42.313276] ? ip_local_deliver_finish+0xba0/0xba0 [ 42.313294] ? lock_downgrade+0x980/0x980 [ 42.313303] ? ip_rcv+0xc80/0x1820 [ 42.313314] ? debug_check_no_locks_freed+0x3d0/0x3d0 [ 42.313326] ? lock_release+0xda0/0xda0 [ 42.313339] ? __lock_is_held+0xbc/0x140 [ 42.313366] ip_rcv+0xc3f/0x1820 [ 42.313384] ? ip_local_deliver+0x6e0/0x6e0 [ 42.313390] ? rb_insert_color+0x1580/0x1580 [ 42.313409] ? print_usage_bug+0x3f0/0x3f0 [ 42.313444] ? __lock_is_held+0xbc/0x140 [ 42.313477] ? ip_local_deliver+0x6e0/0x6e0 [ 42.313493] __netif_receive_skb_core+0x1a3e/0x3450 [ 42.313499] ? __lock_acquire+0x6e9/0x47f0 [ 42.313539] ? nf_ingress+0x9f0/0x9f0 [ 42.313587] ? debug_check_no_locks_freed+0x3d0/0x3d0 [ 42.313621] ? check_noncircular+0x20/0x20 [ 42.313631] ? fastpath_timer_check+0x7d5/0xa70 [ 42.313645] ? check_noncircular+0x20/0x20 [ 42.313653] ? check_noncircular+0x20/0x20 [ 42.313662] ? check_noncircular+0x20/0x20 [ 42.313670] ? update_curr+0x415/0x9a0