[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

syzkaller login: [   38.772945] can: request_module (can-proto-0) failed.
[   38.782177] can: request_module (can-proto-0) failed.
[   40.163374] tipc: TX() has been purged, node left!
Warning: Permanently added '10.128.15.223' (ECDSA) to the list of known hosts.
2020/03/17 01:38:48 parsed 1 programs
2020/03/17 01:38:48 executed programs: 0
[   51.596005] dccp_close: ABORT with 24 bytes unread
[   51.644758] BUG: please report to dccp@vger.kernel.org => prev = 0, last = 0 at net/dccp/ccids/lib/packet_history.c:412/tfrc_rx_hist_sample_rtt()
[   51.658234] CPU: 1 PID: 4794 Comm: syz-executor1 Not tainted 5.6.0-rc6-syzkaller #0
[   51.666130] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   51.675496] Call Trace:
[   51.676687] dccp_close: ABORT with 24 bytes unread
[   51.678081]  <IRQ>
[   51.678111]  dump_stack+0x12f/0x187
[   51.678135]  tfrc_rx_hist_sample_rtt.cold.3+0x47/0x4c
[   51.694057]  ccid3_hc_rx_packet_recv+0x471/0xec0
[   51.698849]  ? dccp_parse_options+0x333/0x1000
[   51.703468]  dccp_deliver_input_to_ccids+0xcc/0x220
[   51.708510]  dccp_rcv_established+0x49/0x70
[   51.712880]  dccp_v4_do_rcv+0xf4/0x160
[   51.716826]  __sk_receive_skb+0x2b6/0x9e0
[   51.721002]  ? sk_free+0x60/0x60
[   51.724396]  ? dccp_invalid_packet+0x3ec/0x750
[   51.729015]  dccp_v4_rcv+0xc22/0x1c0b
[   51.732863]  ip_protocol_deliver_rcu+0x50b/0x6b0
[   51.737654]  ip_local_deliver_finish+0x1ee/0x2e0
[   51.742441]  ip_local_deliver+0x306/0x450
[   51.746614]  ? ip_local_deliver_finish+0x2e0/0x2e0
[   51.751558]  ? lock_downgrade+0x900/0x900
[   51.755731]  ? ip_protocol_deliver_rcu+0x6b0/0x6b0
[   51.760802]  ip_rcv_finish+0xb0/0x170
[   51.764658]  ip_rcv+0xcb/0x2f0
[   51.767871]  ? ip_local_deliver+0x450/0x450
[   51.772220]  ? ip_rcv_finish_core.isra.16+0x1b90/0x1b90
[   51.777701]  ? ip_local_deliver+0x450/0x450
[   51.782039]  __netif_receive_skb_one_core+0x132/0x190
[   51.787253]  ? __netif_receive_skb_core+0x2a00/0x2a00
[   51.792473]  ? lock_acquire+0x194/0x3e0
[   51.794967] dccp_close: ABORT with 24 bytes unread
[   51.796452]  ? process_backlog+0x1a8/0x700
[   51.796471]  __netif_receive_skb+0x1f/0x1b0
[   51.796485]  process_backlog+0x1f1/0x700
[   51.796493]  ? __do_softirq+0x248/0x94c
[   51.796506]  ? lockdep_hardirqs_on+0x1a1/0x5d0
[   51.796526]  net_rx_action+0x42d/0xde0
[   51.809297] dccp_close: ABORT with 24 bytes unread
[   51.810048]  ? mark_lock+0xc5/0x1200
[   51.835210]  ? napi_busy_loop+0x6e0/0x6e0
[   51.839386]  ? rcu_is_watching+0x31/0x80
[   51.843486]  ? rcu_read_lock_sched_held+0x9c/0xd0
[   51.848348]  ? rcu_read_lock_any_held.part.8+0x50/0x50
[   51.853635]  ? __do_softirq+0x1d9/0x94c
[   51.857625]  ? ip_finish_output2+0x709/0x22a0
[   51.862248]  ? trace_hardirqs_on+0x28/0x180
[   51.866641]  __do_softirq+0x248/0x94c
[   51.870482]  ? ip_finish_output2+0x709/0x22a0
[   51.875005]  do_softirq_own_stack+0x2a/0x40
[   51.877413] BUG: please report to dccp@vger.kernel.org => prev = 0, last = 0 at net/dccp/ccids/lib/packet_history.c:412/tfrc_rx_hist_sample_rtt()
[   51.879331]  </IRQ>
[   51.879348]  do_softirq.part.17+0x11a/0x150
[   51.879358]  __local_bh_enable_ip+0x1ee/0x230
[   51.879373]  ip_finish_output2+0x72d/0x22a0
[   51.879400]  ? ip_frag_next+0xa10/0xa10
[   51.879412]  ? rcu_read_lock_held+0x9c/0xb0
[   51.916197]  ? rcu_read_lock_held_common+0x170/0x170
[   51.921311]  __ip_finish_output+0x401/0xa80
[   51.925628]  ? __ip_finish_output+0x401/0xa80
[   51.930175]  ip_finish_output+0x27/0x170
[   51.934232]  ip_output+0x1c6/0x560
[   51.937764]  ? ip_mc_output+0xd10/0xd10
[   51.941751]  ? __ip_finish_output+0xa80/0xa80
[   51.946299]  ? rcu_read_lock_held_common+0x170/0x170
[   51.951490]  ? rcu_read_lock_held+0x9c/0xb0
[   51.955807]  ip_local_out+0x7e/0x130
[   51.959536]  __ip_queue_xmit+0x700/0x1de0
[   51.963682]  ? __skb_checksum+0x7c0/0x7c0
[   51.967821]  ? skb_send_sock_locked+0x750/0x750
[   51.972471]  ? reqsk_fastopen_remove+0x560/0x560
[   51.977227]  ? dccp_insert_options+0x1e2/0xb20
[   51.981872]  ip_queue_xmit+0x45/0x70
[   51.985582]  dccp_transmit_skb+0xb76/0x12a0
[   51.989975]  ? skb_unlink+0x117/0x1a0
[   51.993773]  dccp_xmit_packet+0x1a0/0x580
[   51.998079]  dccp_write_xmit+0x128/0x180
[   52.002150]  dccp_sendmsg+0x68f/0xdb0
[   52.005968]  ? aa_sk_perm+0x182/0x740
[   52.009788]  ? dccp_disconnect+0xb00/0xb00
[   52.014041]  ? aa_af_perm+0x240/0x240
[   52.017867]  inet_sendmsg+0xbd/0xe0
[   52.021502]  ? inet_send_prepare+0x3a0/0x3a0
[   52.025911]  sock_sendmsg+0xdf/0x110
[   52.029749]  ____sys_sendmsg+0x687/0xae0
[   52.033830]  ? copy_msghdr_from_user+0x20d/0x3f0
[   52.038599]  ? kernel_sendmsg+0x30/0x30
[   52.042606]  ? __fget_files+0x285/0x410
[   52.046594]  ___sys_sendmsg+0xe4/0x160
[   52.050488]  ? sendmsg_copy_msghdr+0x30/0x30
[   52.054900]  ? rcu_read_lock_held_common+0x170/0x170
[   52.059993]  ? __lock_acquire+0xfac/0x47f0
[   52.064391]  ? __fget_files+0x29f/0x410
[   52.068391]  ? __x64_sys_dup2+0x2e0/0x2e0
[   52.072555]  ? __fget_light+0x1a9/0x230
[   52.076519]  ? __fdget+0xe/0x10
[   52.079840]  __sys_sendmsg+0xd9/0x180
[   52.083662]  ? __sys_sendmsg_sock+0xa0/0xa0
[   52.088003]  ? rcu_read_lock_any_held.part.8+0x50/0x50
[   52.093295]  ? __sched_text_start+0x8/0x8
[   52.097621]  ? entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   52.104146]  __x64_sys_sendmsg+0x73/0xb0
[   52.108221]  do_syscall_64+0xd0/0x630
[   52.112038]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   52.117242] RIP: 0033:0x452f89
[   52.120447] Code: e8 ac b7 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 2b ba fb ff c3 66 2e 0f 1f 84 00 00 00 00
[   52.139649] RSP: 002b:00007ff685759c58 EFLAGS: 00000212 ORIG_RAX: 000000000000002e
[   52.147452] RAX: ffffffffffffffda RBX: 000000000071bf58 RCX: 0000000000452f89
[   52.154725] RDX: 0000000000000080 RSI: 00000000206c8000 RDI: 0000000000000005
[   52.161982] RBP: 000000000000048a R08: 0000000000000000 R09: 0000000000000000
[   52.170481] R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f4d90
[   52.177755] R13: 00000000ffffffff R14: 00007ff68575a6d4 R15: 0000000000000002
[   52.185211] CPU: 0 PID: 4825 Comm: syz-executor2 Not tainted 5.6.0-rc6-syzkaller #0
[   52.195479] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   52.204847] Call Trace:
[   52.207561]  <IRQ>
[   52.209741]  dump_stack+0x12f/0x187
[   52.213538]  tfrc_rx_hist_sample_rtt.cold.3+0x47/0x4c
[   52.216628] dccp_close: ABORT with 24 bytes unread
[   52.218754]  ccid3_hc_rx_packet_recv+0x471/0xec0
[   52.218766]  ? dccp_parse_options+0x333/0x1000
[   52.218793]  dccp_deliver_input_to_ccids+0xcc/0x220
[   52.218806]  dccp_rcv_established+0x49/0x70
[   52.218816]  dccp_v4_do_rcv+0xf4/0x160
[   52.218831]  __sk_receive_skb+0x2b6/0x9e0
[   52.218852]  ? sk_free+0x60/0x60
[   52.237594] BUG: please report to dccp@vger.kernel.org => prev = 0, last = 0 at net/dccp/ccids/lib/packet_history.c:412/tfrc_rx_hist_sample_rtt()
[   52.238415]  ? dccp_invalid_packet+0x3ec/0x750
[   52.238439]  dccp_v4_rcv+0xc22/0x1c0b
[   52.238479]  ip_protocol_deliver_rcu+0x50b/0x6b0
[   52.280444]  ip_local_deliver_finish+0x1ee/0x2e0
[   52.285222]  ip_local_deliver+0x306/0x450
[   52.289369]  ? ip_local_deliver_finish+0x2e0/0x2e0
[   52.294413]  ? lock_downgrade+0x900/0x900
[   52.298586]  ? ip_protocol_deliver_rcu+0x6b0/0x6b0
[   52.303527]  ip_rcv_finish+0xb0/0x170
[   52.307352]  ip_rcv+0xcb/0x2f0
[   52.310553]  ? ip_local_deliver+0x450/0x450
[   52.314897]  ? ip_rcv_finish_core.isra.16+0x1b90/0x1b90
[   52.320264]  ? ip_local_deliver+0x450/0x450
[   52.324592]  __netif_receive_skb_one_core+0x132/0x190
[   52.329799]  ? __netif_receive_skb_core+0x2a00/0x2a00
[   52.334991]  ? lock_acquire+0x194/0x3e0
[   52.338953]  ? process_backlog+0x1a8/0x700
[   52.343180]  __netif_receive_skb+0x1f/0x1b0
[   52.347496]  process_backlog+0x1f1/0x700
[   52.351540]  ? __do_softirq+0x248/0x94c
[   52.355497]  ? lockdep_hardirqs_on+0x1a1/0x5d0
[   52.360072]  net_rx_action+0x42d/0xde0
[   52.363948]  ? mark_lock+0xc5/0x1200
[   52.367663]  ? napi_busy_loop+0x6e0/0x6e0
[   52.371793]  ? rcu_is_watching+0x31/0x80
[   52.375852]  ? rcu_read_lock_sched_held+0x9c/0xd0
[   52.380692]  ? rcu_read_lock_any_held.part.8+0x50/0x50
[   52.385958]  ? __do_softirq+0x1d9/0x94c
[   52.389922]  ? ip_finish_output2+0x709/0x22a0
[   52.394415]  ? trace_hardirqs_on+0x28/0x180
[   52.398726]  __do_softirq+0x248/0x94c
[   52.402523]  ? ip_finish_output2+0x709/0x22a0
[   52.407016]  do_softirq_own_stack+0x2a/0x40
[   52.411335]  </IRQ>
[   52.413559]  do_softirq.part.17+0x11a/0x150
[   52.417864]  __local_bh_enable_ip+0x1ee/0x230
[   52.422344]  ip_finish_output2+0x72d/0x22a0
[   52.426671]  ? ip_frag_next+0xa10/0xa10
[   52.430631]  ? rcu_read_lock_held+0x9c/0xb0
[   52.434956]  ? rcu_read_lock_held_common+0x170/0x170
[   52.440075]  __ip_finish_output+0x401/0xa80
[   52.444513]  ? __ip_finish_output+0x401/0xa80
[   52.449045]  ip_finish_output+0x27/0x170
[   52.453109]  ip_output+0x1c6/0x560
[   52.456644]  ? ip_mc_output+0xd10/0xd10
[   52.460618]  ? __ip_finish_output+0xa80/0xa80
[   52.465112]  ? rcu_read_lock_held_common+0x170/0x170
[   52.470288]  ? rcu_read_lock_held+0x9c/0xb0
[   52.474599]  ip_local_out+0x7e/0x130
[   52.478302]  __ip_queue_xmit+0x700/0x1de0
[   52.482434]  ? __skb_checksum+0x7c0/0x7c0
[   52.486563]  ? skb_send_sock_locked+0x750/0x750
[   52.491213]  ? reqsk_fastopen_remove+0x560/0x560
[   52.495951]  ? dccp_insert_options+0x1e2/0xb20
[   52.500531]  ip_queue_xmit+0x45/0x70
[   52.504230]  dccp_transmit_skb+0xb76/0x12a0
[   52.508532]  ? skb_unlink+0x117/0x1a0
[   52.512339]  dccp_xmit_packet+0x1a0/0x580
[   52.516484]  dccp_write_xmit+0x128/0x180
[   52.520535]  dccp_sendmsg+0x68f/0xdb0
[   52.524331]  ? aa_sk_perm+0x182/0x740
[   52.528127]  ? dccp_disconnect+0xb00/0xb00
[   52.532349]  ? aa_af_perm+0x240/0x240
[   52.536161]  inet_sendmsg+0xbd/0xe0
[   52.539774]  ? inet_send_prepare+0x3a0/0x3a0
[   52.544178]  sock_sendmsg+0xdf/0x110
[   52.547879]  ____sys_sendmsg+0x687/0xae0
[   52.551934]  ? copy_msghdr_from_user+0x20d/0x3f0
[   52.556678]  ? kernel_sendmsg+0x30/0x30
[   52.560648]  ? __fget_files+0x285/0x410
[   52.564791]  ___sys_sendmsg+0xe4/0x160
[   52.568665]  ? sendmsg_copy_msghdr+0x30/0x30
[   52.573073]  ? rcu_read_lock_held_common+0x170/0x170
[   52.578175]  ? __fget_files+0x29f/0x410
[   52.582162]  ? __x64_sys_dup2+0x2e0/0x2e0
[   52.586325]  ? __fget_light+0x1a9/0x230
[   52.590298]  ? __fdget+0xe/0x10
[   52.593573]  __sys_sendmsg+0xd9/0x180
[   52.597359]  ? __sys_sendmsg_sock+0xa0/0xa0
[   52.601702]  ? rcu_read_lock_any_held.part.8+0x50/0x50
[   52.606974]  ? __sched_text_start+0x8/0x8
[   52.611136]  ? entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   52.616627]  __x64_sys_sendmsg+0x73/0xb0
[   52.620686]  do_syscall_64+0xd0/0x630
[   52.624480]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   52.629657] RIP: 0033:0x452f89
[   52.632835] Code: e8 ac b7 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 2b ba fb ff c3 66 2e 0f 1f 84 00 00 00 00
[   52.651719] RSP: 002b:00007f2ffc5fac58 EFLAGS: 00000212 ORIG_RAX: 000000000000002e
[   52.659408] RAX: ffffffffffffffda RBX: 000000000071bf58 RCX: 0000000000452f89
[   52.666664] RDX: 0000000000000080 RSI: 00000000206c8000 RDI: 0000000000000005
[   52.673919] RBP: 000000000000048a R08: 0000000000000000 R09: 0000000000000000
[   52.681285] R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f4d90
[   52.688547] R13: 00000000ffffffff R14: 00007f2ffc5fb6d4 R15: 0000000000000002
[   52.695843] CPU: 1 PID: 4826 Comm: syz-executor5 Not tainted 5.6.0-rc6-syzkaller #0
[   52.703650] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   52.713001] Call Trace:
[   52.715572]  <IRQ>
[   52.717714]  dump_stack+0x12f/0x187
[   52.721333]  tfrc_rx_hist_sample_rtt.cold.3+0x47/0x4c
[   52.726519]  ccid3_hc_rx_packet_recv+0x471/0xec0
[   52.731257]  ? dccp_parse_options+0x333/0x1000
[   52.735850]  dccp_deliver_input_to_ccids+0xcc/0x220
[   52.740857]  dccp_rcv_established+0x49/0x70
[   52.745162]  dccp_v4_do_rcv+0xf4/0x160
[   52.749036]  __sk_receive_skb+0x2b6/0x9e0
[   52.753174]  ? sk_free+0x60/0x60
[   52.756525]  ? dccp_invalid_packet+0x3ec/0x750
[   52.761104]  dccp_v4_rcv+0xc22/0x1c0b
[   52.764913]  ip_protocol_deliver_rcu+0x50b/0x6b0
[   52.769663]  ip_local_deliver_finish+0x1ee/0x2e0
[   52.774427]  ip_local_deliver+0x306/0x450
[   52.778559]  ? ip_local_deliver_finish+0x2e0/0x2e0
[   52.783471]  ? lock_downgrade+0x900/0x900
[   52.787604]  ? ip_protocol_deliver_rcu+0x6b0/0x6b0
[   52.792531]  ip_rcv_finish+0xb0/0x170
[   52.796331]  ip_rcv+0xcb/0x2f0
[   52.799508]  ? ip_local_deliver+0x450/0x450
[   52.803991]  ? ip_rcv_finish_core.isra.16+0x1b90/0x1b90
[   52.809359]  ? ip_local_deliver+0x450/0x450
[   52.813764]  __netif_receive_skb_one_core+0x132/0x190
[   52.818957]  ? __netif_receive_skb_core+0x2a00/0x2a00
[   52.824138]  ? lock_acquire+0x194/0x3e0
[   52.828094]  ? process_backlog+0x1a8/0x700
[   52.832318]  __netif_receive_skb+0x1f/0x1b0
[   52.836646]  process_backlog+0x1f1/0x700
[   52.840689]  ? __do_softirq+0x248/0x94c
[   52.844645]  ? lockdep_hardirqs_on+0x1a1/0x5d0
[   52.849219]  net_rx_action+0x42d/0xde0
[   52.853110]  ? mark_lock+0xc5/0x1200
[   52.856847]  ? napi_busy_loop+0x6e0/0x6e0
[   52.861020]  ? rcu_is_watching+0x31/0x80
[   52.865100]  ? rcu_read_lock_sched_held+0x9c/0xd0
[   52.869941]  ? rcu_read_lock_any_held.part.8+0x50/0x50
[   52.875220]  ? __do_softirq+0x1d9/0x94c
[   52.879335]  ? ip_finish_output2+0x709/0x22a0
[   52.883928]  ? trace_hardirqs_on+0x28/0x180
[   52.888260]  __do_softirq+0x248/0x94c
[   52.892092]  ? ip_finish_output2+0x709/0x22a0
[   52.896597]  do_softirq_own_stack+0x2a/0x40
[   52.900920]  </IRQ>
[   52.903163]  do_softirq.part.17+0x11a/0x150
[   52.907494]  __local_bh_enable_ip+0x1ee/0x230
[   52.911979]  ip_finish_output2+0x72d/0x22a0
[   52.916385]  ? ip_frag_next+0xa10/0xa10
[   52.920356]  ? rcu_read_lock_held+0x9c/0xb0
[   52.924692]  ? rcu_read_lock_held_common+0x170/0x170
[   52.929807]  __ip_finish_output+0x401/0xa80
[   52.934118]  ? __ip_finish_output+0x401/0xa80
[   52.938605]  ip_finish_output+0x27/0x170
[   52.942662]  ip_output+0x1c6/0x560
[   52.946197]  ? ip_mc_output+0xd10/0xd10
[   52.950164]  ? __ip_finish_output+0xa80/0xa80
[   52.954651]  ? rcu_read_lock_held_common+0x170/0x170
[   52.959744]  ? rcu_read_lock_held+0x9c/0xb0
[   52.964061]  ip_local_out+0x7e/0x130
[   52.967786]  __ip_queue_xmit+0x700/0x1de0
[   52.971927]  ? __skb_checksum+0x7c0/0x7c0
[   52.976058]  ? skb_send_sock_locked+0x750/0x750
[   52.980707]  ? reqsk_fastopen_remove+0x560/0x560
[   52.985443]  ? dccp_insert_options+0x1e2/0xb20
[   52.990021]  ip_queue_xmit+0x45/0x70
[   52.993722]  dccp_transmit_skb+0xb76/0x12a0
[   52.998044]  ? skb_unlink+0x117/0x1a0
[   53.001865]  dccp_xmit_packet+0x1a0/0x580
[   53.006033]  dccp_write_xmit+0x128/0x180
[   53.010115]  dccp_sendmsg+0x68f/0xdb0
[   53.013911]  ? aa_sk_perm+0x182/0x740
[   53.017703]  ? dccp_disconnect+0xb00/0xb00
[   53.022060]  ? aa_af_perm+0x240/0x240
[   53.025899]  inet_sendmsg+0xbd/0xe0
[   53.029520]  ? inet_send_prepare+0x3a0/0x3a0
[   53.033918]  sock_sendmsg+0xdf/0x110
[   53.037621]  ____sys_sendmsg+0x687/0xae0
[   53.041665]  ? copy_msghdr_from_user+0x20d/0x3f0
[   53.046407]  ? kernel_sendmsg+0x30/0x30
[   53.050390]  ? __fget_files+0x285/0x410
[   53.054357]  ___sys_sendmsg+0xe4/0x160
[   53.058229]  ? sendmsg_copy_msghdr+0x30/0x30
[   53.062625]  ? rcu_read_lock_held_common+0x170/0x170
[   53.067723]  ? __fget_files+0x29f/0x410
[   53.071699]  ? __x64_sys_dup2+0x2e0/0x2e0
[   53.075825]  ? release_sock+0x122/0x180
[   53.079791]  ? trace_hardirqs_on+0x28/0x180
[   53.084096]  ? release_sock+0x122/0x180
[   53.088068]  ? __fget_light+0x1a9/0x230
[   53.092027]  ? __fdget+0xe/0x10
[   53.095313]  __sys_sendmsg+0xd9/0x180
[   53.099126]  ? __sys_sendmsg_sock+0xa0/0xa0
[   53.103471]  ? rcu_read_lock_any_held.part.8+0x50/0x50
[   53.108740]  ? __sched_text_start+0x8/0x8
[   53.112890]  ? entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   53.118249]  __x64_sys_sendmsg+0x73/0xb0
[   53.122332]  do_syscall_64+0xd0/0x630
[   53.126169]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   53.131359] RIP: 0033:0x452f89
[   53.134542] Code: e8 ac b7 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 2b ba fb ff c3 66 2e 0f 1f 84 00 00 00 00
[   53.153960] RSP: 002b:00007fe11b7dac58 EFLAGS: 00000212 ORIG_RAX: 000000000000002e
[   53.161744] RAX: ffffffffffffffda RBX: 000000000071bf58 RCX: 0000000000452f89
[   53.169180] RDX: 0000000000000080 RSI: 00000000206c8000 RDI: 0000000000000005
[   53.176431] RBP: 000000000000048a R08: 0000000000000000 R09: 0000000000000000
[   53.183691] R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f4d90
[   53.190961] R13: 00000000ffffffff R14: 00007fe11b7db6d4 R15: 0000000000000002
[   53.211675] dccp_close: ABORT with 24 bytes unread
[   53.220701] dccp_close: ABORT with 24 bytes unread
[   53.247460] dccp_close: ABORT with 24 bytes unread
[   53.256490] BUG: please report to dccp@vger.kernel.org => prev = 0, last = 0 at net/dccp/ccids/lib/packet_history.c:412/tfrc_rx_hist_sample_rtt()
[   53.270045] CPU: 0 PID: 4838 Comm: syz-executor Not tainted 5.6.0-rc6-syzkaller #0
[   53.277797] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   53.287302] Call Trace:
[   53.289897]  <IRQ>
[   53.292065]  dump_stack+0x12f/0x187
[   53.295720]  tfrc_rx_hist_sample_rtt.cold.3+0x47/0x4c
[   53.301070]  ccid3_hc_rx_packet_recv+0x471/0xec0
[   53.303672] BUG: please report to dccp@vger.kernel.org => prev = 0, last = 0 at net/dccp/ccids/lib/packet_history.c:412/tfrc_rx_hist_sample_rtt()
[   53.305826]  ? dccp_parse_options+0x333/0x1000
[   53.305855]  dccp_deliver_input_to_ccids+0xcc/0x220
[   53.305869]  dccp_rcv_established+0x49/0x70
[   53.305882]  dccp_v4_do_rcv+0xf4/0x160
[   53.305897]  __sk_receive_skb+0x2b6/0x9e0
[   53.305913]  ? sk_free+0x60/0x60
[   53.344266]  ? dccp_invalid_packet+0x3ec/0x750
[   53.348848]  dccp_v4_rcv+0xc22/0x1c0b
[   53.352670]  ip_protocol_deliver_rcu+0x50b/0x6b0
[   53.357419]  ip_local_deliver_finish+0x1ee/0x2e0
[   53.362164]  ip_local_deliver+0x306/0x450
[   53.366302]  ? ip_local_deliver_finish+0x2e0/0x2e0
[   53.371745]  ? lock_downgrade+0x900/0x900
[   53.375877]  ? ip_protocol_deliver_rcu+0x6b0/0x6b0
[   53.380828]  ip_rcv_finish+0xb0/0x170
[   53.384613]  ip_rcv+0xcb/0x2f0
[   53.387801]  ? ip_local_deliver+0x450/0x450
[   53.392111]  ? ip_rcv_finish_core.isra.16+0x1b90/0x1b90
[   53.397472]  ? ip_local_deliver+0x450/0x450
[   53.401786]  __netif_receive_skb_one_core+0x132/0x190
[   53.406970]  ? __netif_receive_skb_core+0x2a00/0x2a00
[   53.412149]  ? lock_acquire+0x194/0x3e0
[   53.416196]  ? process_backlog+0x1a8/0x700
[   53.420431]  __netif_receive_skb+0x1f/0x1b0
[   53.424742]  process_backlog+0x1f1/0x700
[   53.428787]  ? __do_softirq+0x248/0x94c
[   53.432760]  ? lockdep_hardirqs_on+0x1a1/0x5d0
[   53.437354]  net_rx_action+0x42d/0xde0
[   53.441229]  ? mark_lock+0xc5/0x1200
[   53.444937]  ? napi_busy_loop+0x6e0/0x6e0
[   53.449077]  ? rcu_is_watching+0x31/0x80
[   53.453149]  ? rcu_read_lock_sched_held+0x9c/0xd0
[   53.457973]  ? rcu_read_lock_any_held.part.8+0x50/0x50
[   53.463228]  ? __do_softirq+0x1d9/0x94c
[   53.467192]  ? ip_finish_output2+0x709/0x22a0
[   53.471679]  ? trace_hardirqs_on+0x28/0x180
[   53.475997]  __do_softirq+0x248/0x94c
[   53.479794]  ? ip_finish_output2+0x709/0x22a0
[   53.484281]  do_softirq_own_stack+0x2a/0x40
[   53.488586]  </IRQ>
[   53.490816]  do_softirq.part.17+0x11a/0x150
[   53.495122]  __local_bh_enable_ip+0x1ee/0x230
[   53.499605]  ip_finish_output2+0x72d/0x22a0
[   53.504058]  ? ip_frag_next+0xa10/0xa10
[   53.508068]  ? rcu_read_lock_held+0x9c/0xb0
[   53.512506]  ? rcu_read_lock_held_common+0x170/0x170
[   53.517682]  __ip_finish_output+0x401/0xa80
[   53.522007]  ? __ip_finish_output+0x401/0xa80
[   53.526508]  ip_finish_output+0x27/0x170
[   53.530562]  ip_output+0x1c6/0x560
[   53.534103]  ? ip_mc_output+0xd10/0xd10
[   53.538066]  ? __ip_finish_output+0xa80/0xa80
[   53.542554]  ? rcu_read_lock_held_common+0x170/0x170
[   53.547642]  ? rcu_read_lock_held+0x9c/0xb0
[   53.551966]  ip_local_out+0x7e/0x130
[   53.555670]  __ip_queue_xmit+0x700/0x1de0
[   53.559802]  ? __skb_checksum+0x7c0/0x7c0
[   53.563933]  ? skb_send_sock_locked+0x750/0x750
[   53.568595]  ? reqsk_fastopen_remove+0x560/0x560
[   53.573332]  ? dccp_insert_options+0x1e2/0xb20
[   53.577919]  ip_queue_xmit+0x45/0x70
[   53.581619]  dccp_transmit_skb+0xb76/0x12a0
[   53.585933]  ? skb_unlink+0x117/0x1a0
[   53.589727]  dccp_xmit_packet+0x1a0/0x580
[   53.593865]  dccp_write_xmit+0x128/0x180
[   53.597917]  dccp_sendmsg+0x68f/0xdb0
[   53.601703]  ? aa_sk_perm+0x182/0x740
[   53.605490]  ? dccp_disconnect+0xb00/0xb00
[   53.609708]  ? aa_af_perm+0x240/0x240
[   53.613515]  inet_sendmsg+0xbd/0xe0
[   53.617154]  ? inet_send_prepare+0x3a0/0x3a0
[   53.621547]  sock_sendmsg+0xdf/0x110
[   53.625247]  ____sys_sendmsg+0x687/0xae0
[   53.629307]  ? copy_msghdr_from_user+0x20d/0x3f0
[   53.634051]  ? kernel_sendmsg+0x30/0x30
[   53.638017]  ? __fget_files+0x285/0x410
[   53.641984]  ___sys_sendmsg+0xe4/0x160
[   53.645856]  ? sendmsg_copy_msghdr+0x30/0x30
[   53.650267]  ? rcu_read_lock_held_common+0x170/0x170
[   53.655376]  ? __fget_files+0x29f/0x410
[   53.659344]  ? __x64_sys_dup2+0x2e0/0x2e0
[   53.663484]  ? release_sock+0x122/0x180
[   53.667442]  ? trace_hardirqs_on+0x28/0x180
[   53.671748]  ? release_sock+0x122/0x180
[   53.675865]  ? __fget_light+0x1a9/0x230
[   53.679852]  ? __fdget+0xe/0x10
[   53.683139]  __sys_sendmsg+0xd9/0x180
[   53.686948]  ? __sys_sendmsg_sock+0xa0/0xa0
[   53.691311]  ? rcu_read_lock_any_held.part.8+0x50/0x50
[   53.696578]  ? __sys_listen+0x1e8/0x230
[   53.700557]  ? entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   53.705912]  __x64_sys_sendmsg+0x73/0xb0
[   53.709966]  do_syscall_64+0xd0/0x630
[   53.713760]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   53.718945] RIP: 0033:0x452f89
[   53.722128] Code: e8 ac b7 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 2b ba fb ff c3 66 2e 0f 1f 84 00 00 00 00
[   53.741029] RSP: 002b:00007f5aeda3fc58 EFLAGS: 00000212 ORIG_RAX: 000000000000002e
[   53.748721] RAX: ffffffffffffffda RBX: 000000000071bf58 RCX: 0000000000452f89
[   53.755977] RDX: 0000000000000080 RSI: 00000000206c8000 RDI: 0000000000000005
[   53.763230] RBP: 000000000000048a R08: 0000000000000000 R09: 0000000000000000
[   53.770499] R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f4d90
[   53.778408] R13: 00000000ffffffff R14: 00007f5aeda406d4 R15: 0000000000000002
[   53.785698] CPU: 1 PID: 4848 Comm: syz-executor3 Not tainted 5.6.0-rc6-syzkaller #0
[   53.793512] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   53.794791] dccp_close: ABORT with 24 bytes unread
[   53.802868] Call Trace:
[   53.802873]  <IRQ>
[   53.802890]  dump_stack+0x12f/0x187
[   53.802914]  tfrc_rx_hist_sample_rtt.cold.3+0x47/0x4c
[   53.802934]  ccid3_hc_rx_packet_recv+0x471/0xec0
[   53.826145]  ? dccp_parse_options+0x333/0x1000
[   53.830869]  dccp_deliver_input_to_ccids+0xcc/0x220
[   53.835910]  dccp_rcv_established+0x49/0x70
[   53.840250]  dccp_v4_do_rcv+0xf4/0x160
[   53.844153]  __sk_receive_skb+0x2b6/0x9e0
[   53.848324]  ? sk_free+0x60/0x60
[   53.851813]  ? dccp_invalid_packet+0x3ec/0x750
[   53.856428]  dccp_v4_rcv+0xc22/0x1c0b
[   53.860281]  ip_protocol_deliver_rcu+0x50b/0x6b0
[   53.864808] BUG: please report to dccp@vger.kernel.org => prev = 0, last = 0 at net/dccp/ccids/lib/packet_history.c:412/tfrc_rx_hist_sample_rtt()
[   53.865061]  ip_local_deliver_finish+0x1ee/0x2e0
[   53.883555]  ip_local_deliver+0x306/0x450
[   53.887692]  ? ip_local_deliver_finish+0x2e0/0x2e0
[   53.892612]  ? lock_downgrade+0x900/0x900
[   53.896751]  ? ip_protocol_deliver_rcu+0x6b0/0x6b0
[   53.901679]  ip_rcv_finish+0xb0/0x170
[   53.905488]  ip_rcv+0xcb/0x2f0
[   53.908666]  ? ip_local_deliver+0x450/0x450
[   53.912990]  ? ip_rcv_finish_core.isra.16+0x1b90/0x1b90
[   53.918344]  ? ip_local_deliver+0x450/0x450
[   53.922652]  __netif_receive_skb_one_core+0x132/0x190
[   53.927832]  ? __netif_receive_skb_core+0x2a00/0x2a00
[   53.933011]  ? lock_acquire+0x194/0x3e0
[   53.936980]  ? process_backlog+0x1a8/0x700
[   53.941207]  __netif_receive_skb+0x1f/0x1b0
[   53.945521]  process_backlog+0x1f1/0x700
[   53.949574]  ? __do_softirq+0x248/0x94c
[   53.953538]  ? lockdep_hardirqs_on+0x1a1/0x5d0
[   53.958118]  net_rx_action+0x42d/0xde0
[   53.962008]  ? mark_lock+0xc5/0x1200
[   53.967467]  ? napi_busy_loop+0x6e0/0x6e0
[   53.971619]  ? rcu_is_watching+0x31/0x80
[   53.975705]  ? rcu_read_lock_sched_held+0x9c/0xd0
[   53.980558]  ? rcu_read_lock_any_held.part.8+0x50/0x50
[   53.985835]  ? __do_softirq+0x1d9/0x94c
[   53.989791]  ? ip_finish_output2+0x709/0x22a0
[   53.994284]  ? trace_hardirqs_on+0x28/0x180
[   53.998607]  __do_softirq+0x248/0x94c
[   54.002403]  ? ip_finish_output2+0x709/0x22a0
[   54.006899]  do_softirq_own_stack+0x2a/0x40
[   54.011204]  </IRQ>
[   54.013426]  do_softirq.part.17+0x11a/0x150
[   54.017739]  __local_bh_enable_ip+0x1ee/0x230
[   54.022231]  ip_finish_output2+0x72d/0x22a0
[   54.026558]  ? ip_frag_next+0xa10/0xa10
[   54.030549]  ? rcu_read_lock_held+0x9c/0xb0
[   54.034889]  ? rcu_read_lock_held_common+0x170/0x170
[   54.039992]  __ip_finish_output+0x401/0xa80
[   54.044310]  ? __ip_finish_output+0x401/0xa80
[   54.048812]  ip_finish_output+0x27/0x170
[   54.052868]  ip_output+0x1c6/0x560
[   54.056400]  ? ip_mc_output+0xd10/0xd10
[   54.060379]  ? __ip_finish_output+0xa80/0xa80
[   54.064857]  ? rcu_read_lock_held_common+0x170/0x170
[   54.069955]  ? rcu_read_lock_held+0x9c/0xb0
[   54.074275]  ip_local_out+0x7e/0x130
[   54.077985]  __ip_queue_xmit+0x700/0x1de0
[   54.082124]  ? __skb_checksum+0x7c0/0x7c0
[   54.086286]  ? skb_send_sock_locked+0x750/0x750
[   54.090938]  ? reqsk_fastopen_remove+0x560/0x560
[   54.095705]  ? dccp_insert_options+0x1e2/0xb20
[   54.100320]  ip_queue_xmit+0x45/0x70
[   54.104030]  dccp_transmit_skb+0xb76/0x12a0
[   54.108362]  ? skb_unlink+0x117/0x1a0
[   54.112171]  dccp_xmit_packet+0x1a0/0x580
[   54.116309]  dccp_write_xmit+0x128/0x180
[   54.120359]  dccp_sendmsg+0x68f/0xdb0
[   54.124149]  ? aa_sk_perm+0x182/0x740
[   54.128058]  ? dccp_disconnect+0xb00/0xb00
[   54.132326]  ? aa_af_perm+0x240/0x240
[   54.136157]  inet_sendmsg+0xbd/0xe0
[   54.139777]  ? inet_send_prepare+0x3a0/0x3a0
[   54.144185]  sock_sendmsg+0xdf/0x110
[   54.147902]  ____sys_sendmsg+0x687/0xae0
[   54.151946]  ? copy_msghdr_from_user+0x20d/0x3f0
[   54.156689]  ? kernel_sendmsg+0x30/0x30
[   54.160658]  ? __fget_files+0x285/0x410
[   54.164640]  ___sys_sendmsg+0xe4/0x160
[   54.168522]  ? sendmsg_copy_msghdr+0x30/0x30
[   54.172930]  ? rcu_read_lock_held_common+0x170/0x170
[   54.178593]  ? __fget_files+0x29f/0x410
[   54.182603]  ? __x64_sys_dup2+0x2e0/0x2e0
[   54.186786]  ? __fget_light+0x1a9/0x230
[   54.190799]  ? __fdget+0xe/0x10
[   54.194084]  __sys_sendmsg+0xd9/0x180
[   54.198016]  ? __sys_sendmsg_sock+0xa0/0xa0
[   54.202352]  ? rcu_read_lock_any_held.part.8+0x50/0x50
[   54.207632]  ? __sched_text_start+0x8/0x8
[   54.211799]  ? entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   54.217177]  __x64_sys_sendmsg+0x73/0xb0
[   54.221238]  do_syscall_64+0xd0/0x630
[   54.225037]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   54.230218] RIP: 0033:0x452f89
[   54.233401] Code: e8 ac b7 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 2b ba fb ff c3 66 2e 0f 1f 84 00 00 00 00
[   54.252375] RSP: 002b:00007fb9a5514c58 EFLAGS: 00000212 ORIG_RAX: 000000000000002e
[   54.260068] RAX: ffffffffffffffda RBX: 000000000071bf58 RCX: 0000000000452f89
[   54.267337] RDX: 0000000000000080 RSI: 00000000206c8000 RDI: 0000000000000005
[   54.274605] RBP: 000000000000048a R08: 0000000000000000 R09: 0000000000000000
[   54.282402] R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f4d90
[   54.289762] R13: 00000000ffffffff R14: 00007fb9a55156d4 R15: 0000000000000002
[   54.297061] CPU: 0 PID: 4858 Comm: syz-executor Not tainted 5.6.0-rc6-syzkaller #0
[   54.304790] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   54.314157] Call Trace:
[   54.316744]  <IRQ>
[   54.318665] dccp_close: ABORT with 24 bytes unread
[   54.318924]  dump_stack+0x12f/0x187
[   54.327515]  tfrc_rx_hist_sample_rtt.cold.3+0x47/0x4c
[   54.332731]  ccid3_hc_rx_packet_recv+0x471/0xec0
[   54.337549]  ? dccp_parse_options+0x333/0x1000
[   54.342184]  dccp_deliver_input_to_ccids+0xcc/0x220
[   54.347242]  dccp_rcv_established+0x49/0x70
[   54.351595]  dccp_v4_do_rcv+0xf4/0x160
[   54.355536]  __sk_receive_skb+0x2b6/0x9e0
[   54.359820]  ? sk_free+0x60/0x60
[   54.363215]  ? dccp_invalid_packet+0x3ec/0x750
[   54.367853]  dccp_v4_rcv+0xc22/0x1c0b
[   54.371716]  ip_protocol_deliver_rcu+0x50b/0x6b0
[   54.376512]  ip_local_deliver_finish+0x1ee/0x2e0
[   54.381384]  ip_local_deliver+0x306/0x450
[   54.385556]  ? ip_local_deliver_finish+0x2e0/0x2e0
[   54.390511]  ? lock_downgrade+0x900/0x900
[   54.394690]  ? ip_protocol_deliver_rcu+0x6b0/0x6b0
[   54.399656]  ip_rcv_finish+0xb0/0x170
[   54.403479]  ip_rcv+0xcb/0x2f0
[   54.406693]  ? ip_local_deliver+0x450/0x450
[   54.411034]  ? ip_rcv_finish_core.isra.16+0x1b90/0x1b90
[   54.416427]  ? ip_local_deliver+0x450/0x450
[   54.420765]  __netif_receive_skb_one_core+0x132/0x190
[   54.425978]  ? __netif_receive_skb_core+0x2a00/0x2a00
[   54.431206]  ? lock_acquire+0x194/0x3e0
[   54.435187]  ? process_backlog+0x1a8/0x700
[   54.439444]  __netif_receive_skb+0x1f/0x1b0
[   54.443790]  process_backlog+0x1f1/0x700
[   54.447872]  ? __do_softirq+0x248/0x94c
[   54.451874]  ? lockdep_hardirqs_on+0x1a1/0x5d0
[   54.451976] BUG: please report to dccp@vger.kernel.org => prev = 0, last = 0 at net/dccp/ccids/lib/packet_history.c:412/tfrc_rx_hist_sample_rtt()
[   54.456466]  net_rx_action+0x42d/0xde0
[   54.456482]  ? mark_lock+0xc5/0x1200
[   54.456501]  ? napi_busy_loop+0x6e0/0x6e0
[   54.456509]  ? rcu_is_watching+0x31/0x80
[   54.456527]  ? rcu_read_lock_sched_held+0x9c/0xd0
[   54.456536]  ? rcu_read_lock_any_held.part.8+0x50/0x50
[   54.495541]  ? __do_softirq+0x1d9/0x94c
[   54.499498]  ? ip_finish_output2+0x709/0x22a0
[   54.504001]  ? trace_hardirqs_on+0x28/0x180
[   54.508312]  __do_softirq+0x248/0x94c
[   54.512110]  ? ip_finish_output2+0x709/0x22a0
[   54.516591]  do_softirq_own_stack+0x2a/0x40
[   54.520891]  </IRQ>
[   54.523123]  do_softirq.part.17+0x11a/0x150
[   54.527428]  __local_bh_enable_ip+0x1ee/0x230
[   54.531926]  ip_finish_output2+0x72d/0x22a0
[   54.536246]  ? ip_frag_next+0xa10/0xa10
[   54.540219]  ? rcu_read_lock_held+0x9c/0xb0
[   54.544612]  ? rcu_read_lock_held_common+0x170/0x170
[   54.549729]  __ip_finish_output+0x401/0xa80
[   54.554131]  ? __ip_finish_output+0x401/0xa80
[   54.558665]  ip_finish_output+0x27/0x170
[   54.562743]  ip_output+0x1c6/0x560
[   54.566307]  ? ip_mc_output+0xd10/0xd10
[   54.570287]  ? __ip_finish_output+0xa80/0xa80
[   54.574769]  ? rcu_read_lock_held_common+0x170/0x170
[   54.579882]  ? rcu_read_lock_held+0x9c/0xb0
[   54.584240]  ip_local_out+0x7e/0x130
[   54.587952]  __ip_queue_xmit+0x700/0x1de0
[   54.592109]  ? __skb_checksum+0x7c0/0x7c0
[   54.596467]  ? skb_send_sock_locked+0x750/0x750
[   54.601128]  ? reqsk_fastopen_remove+0x560/0x560
[   54.605884]  ? dccp_insert_options+0x1e2/0xb20
[   54.610493]  ip_queue_xmit+0x45/0x70
[   54.614253]  dccp_transmit_skb+0xb76/0x12a0
[   54.618575]  ? skb_unlink+0x117/0x1a0
[   54.622392]  dccp_xmit_packet+0x1a0/0x580
[   54.626555]  dccp_write_xmit+0x128/0x180
[   54.630616]  dccp_sendmsg+0x68f/0xdb0
[   54.634424]  ? aa_sk_perm+0x182/0x740
[   54.638364]  ? dccp_disconnect+0xb00/0xb00
[   54.642624]  ? aa_af_perm+0x240/0x240
[   54.646467]  inet_sendmsg+0xbd/0xe0
[   54.650128]  ? inet_send_prepare+0x3a0/0x3a0
[   54.654895]  sock_sendmsg+0xdf/0x110
[   54.658609]  ____sys_sendmsg+0x687/0xae0
[   54.662684]  ? copy_msghdr_from_user+0x20d/0x3f0
[   54.667441]  ? kernel_sendmsg+0x30/0x30
[   54.671426]  ? __fget_files+0x285/0x410
[   54.675413]  ___sys_sendmsg+0xe4/0x160
[   54.679961]  ? sendmsg_copy_msghdr+0x30/0x30
[   54.684387]  ? rcu_read_lock_held_common+0x170/0x170
[   54.689637]  ? __fget_files+0x29f/0x410
[   54.693619]  ? __x64_sys_dup2+0x2e0/0x2e0
[   54.697793]  ? __fget_light+0x1a9/0x230
[   54.701783]  ? __fdget+0xe/0x10
[   54.705092]  __sys_sendmsg+0xd9/0x180
[   54.708898]  ? __sys_sendmsg_sock+0xa0/0xa0
[   54.713263]  ? rcu_read_lock_any_held.part.8+0x50/0x50
[   54.718559]  ? __sched_text_start+0x8/0x8
[   54.722714]  ? entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   54.728096]  __x64_sys_sendmsg+0x73/0xb0
[   54.732167]  do_syscall_64+0xd0/0x630
[   54.736091]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   54.741399] RIP: 0033:0x452f89
[   54.745985] Code: e8 ac b7 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 2b ba fb ff c3 66 2e 0f 1f 84 00 00 00 00
2020/03/17 01:38:53 executed programs: 18
[   54.765091] RSP: 002b:00007f5aeda3fc58 EFLAGS: 00000212 ORIG_RAX: 000000000000002e
[   54.772818] RAX: ffffffffffffffda RBX: 000000000071bf58 RCX: 0000000000452f89
[   54.780079] RDX: 0000000000000080 RSI: 00000000206c8000 RDI: 0000000000000005
[   54.787442] RBP: 000000000000048a R08: 0000000000000000 R09: 0000000000000000
[   54.794887] R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f4d90
[   54.802140] R13: 00000000ffffffff R14: 00007f5aeda406d4 R15: 0000000000000002
[   54.809440] CPU: 1 PID: 4871 Comm: syz-executor3 Not tainted 5.6.0-rc6-syzkaller #0
[   54.817339] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   54.826708] Call Trace:
[   54.829400]  <IRQ>
[   54.831580]  dump_stack+0x12f/0x187
[   54.835242]  tfrc_rx_hist_sample_rtt.cold.3+0x47/0x4c
[   54.840516]  ccid3_hc_rx_packet_recv+0x471/0xec0
[   54.845310]  ? dccp_parse_options+0x333/0x1000
[   54.849941]  dccp_deliver_input_to_ccids+0xcc/0x220
[   54.854986]  dccp_rcv_established+0x49/0x70
[   54.859432]  dccp_v4_do_rcv+0xf4/0x160
[   54.863356]  __sk_receive_skb+0x2b6/0x9e0
[   54.867535]  ? sk_free+0x60/0x60
[   54.870944]  ? dccp_invalid_packet+0x3ec/0x750
[   54.875593]  dccp_v4_rcv+0xc22/0x1c0b
[   54.879453] BUG: please report to dccp@vger.kernel.org => prev = 0, last = 0 at net/dccp/ccids/lib/packet_history.c:412/tfrc_rx_hist_sample_rtt()
[   54.879483]  ip_protocol_deliver_rcu+0x50b/0x6b0
[   54.897443]  ip_local_deliver_finish+0x1ee/0x2e0
[   54.902198]  ip_local_deliver+0x306/0x450
[   54.906426]  ? ip_local_deliver_finish+0x2e0/0x2e0
[   54.911350]  ? lock_downgrade+0x900/0x900
[   54.915499]  ? ip_protocol_deliver_rcu+0x6b0/0x6b0
[   54.920440]  ip_rcv_finish+0xb0/0x170
[   54.924228]  ip_rcv+0xcb/0x2f0
[   54.927412]  ? ip_local_deliver+0x450/0x450
[   54.931733]  ? ip_rcv_finish_core.isra.16+0x1b90/0x1b90
[   54.937097]  ? ip_local_deliver+0x450/0x450
[   54.941413]  __netif_receive_skb_one_core+0x132/0x190
[   54.946593]  ? __netif_receive_skb_core+0x2a00/0x2a00
[   54.951814]  ? lock_acquire+0x194/0x3e0
[   54.955783]  ? process_backlog+0x1a8/0x700
[   54.960012]  __netif_receive_skb+0x1f/0x1b0
[   54.964331]  process_backlog+0x1f1/0x700
[   54.969523]  ? __do_softirq+0x248/0x94c
[   54.973485]  ? lockdep_hardirqs_on+0x1a1/0x5d0
[   54.978088]  net_rx_action+0x42d/0xde0
[   54.982230]  ? mark_lock+0xc5/0x1200
[   54.985952]  ? napi_busy_loop+0x6e0/0x6e0
[   54.990275]  ? rcu_is_watching+0x31/0x80
[   54.994937]  ? rcu_read_lock_sched_held+0x9c/0xd0
[   54.999768]  ? rcu_read_lock_any_held.part.8+0x50/0x50
[   55.005553]  ? __do_softirq+0x1d9/0x94c
[   55.009518]  ? ip_finish_output2+0x709/0x22a0
[   55.015009]  ? trace_hardirqs_on+0x28/0x180
[   55.019334]  __do_softirq+0x248/0x94c
[   55.023238]  ? ip_finish_output2+0x709/0x22a0
[   55.027769]  do_softirq_own_stack+0x2a/0x40
[   55.032072]  </IRQ>
[   55.034294]  do_softirq.part.17+0x11a/0x150
[   55.038613]  __local_bh_enable_ip+0x1ee/0x230
[   55.043182]  ip_finish_output2+0x72d/0x22a0
[   55.047512]  ? ip_frag_next+0xa10/0xa10
[   55.051471]  ? rcu_read_lock_held+0x9c/0xb0
[   55.055785]  ? rcu_read_lock_held_common+0x170/0x170
[   55.060887]  __ip_finish_output+0x401/0xa80
[   55.065202]  ? __ip_finish_output+0x401/0xa80
[   55.069688]  ip_finish_output+0x27/0x170
[   55.073747]  ip_output+0x1c6/0x560
[   55.077364]  ? ip_mc_output+0xd10/0xd10
[   55.081341]  ? __ip_finish_output+0xa80/0xa80
[   55.085818]  ? rcu_read_lock_held_common+0x170/0x170
[   55.092042]  ? rcu_read_lock_held+0x9c/0xb0
[   55.096365]  ip_local_out+0x7e/0x130
[   55.100166]  __ip_queue_xmit+0x700/0x1de0
[   55.104313]  ? __skb_checksum+0x7c0/0x7c0
[   55.108444]  ? skb_send_sock_locked+0x750/0x750
[   55.113098]  ? reqsk_fastopen_remove+0x560/0x560
[   55.117836]  ? dccp_insert_options+0x1e2/0xb20
[   55.122424]  ip_queue_xmit+0x45/0x70
[   55.126123]  dccp_transmit_skb+0xb76/0x12a0
[   55.130699]  ? skb_unlink+0x117/0x1a0
[   55.134494]  dccp_xmit_packet+0x1a0/0x580
[   55.138637]  dccp_write_xmit+0x128/0x180
[   55.142692]  dccp_sendmsg+0x68f/0xdb0
[   55.146493]  ? aa_sk_perm+0x182/0x740
[   55.150292]  ? dccp_disconnect+0xb00/0xb00
[   55.154513]  ? aa_af_perm+0x240/0x240
[   55.159196]  inet_sendmsg+0xbd/0xe0
[   55.162899]  ? inet_send_prepare+0x3a0/0x3a0
[   55.167298]  sock_sendmsg+0xdf/0x110
[   55.171004]  ____sys_sendmsg+0x687/0xae0
[   55.175088]  ? copy_msghdr_from_user+0x20d/0x3f0
[   55.179857]  ? kernel_sendmsg+0x30/0x30
[   55.183844]  ? __fget_files+0x285/0x410
[   55.187857]  ___sys_sendmsg+0xe4/0x160
[   55.191755]  ? sendmsg_copy_msghdr+0x30/0x30
[   55.196179]  ? rcu_read_lock_held_common+0x170/0x170
[   55.201443]  ? __fget_files+0x29f/0x410
[   55.205453]  ? __x64_sys_dup2+0x2e0/0x2e0
[   55.209621]  ? __fget_light+0x1a9/0x230
[   55.213585]  ? __fdget+0xe/0x10
[   55.216863]  __sys_sendmsg+0xd9/0x180
[   55.220651]  ? __sys_sendmsg_sock+0xa0/0xa0
[   55.224977]  ? rcu_read_lock_any_held.part.8+0x50/0x50
[   55.230247]  ? __sched_text_start+0x8/0x8
[   55.234763]  ? entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   55.240134]  __x64_sys_sendmsg+0x73/0xb0
[   55.244188]  do_syscall_64+0xd0/0x630
[   55.248103]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   55.253287] RIP: 0033:0x452f89
[   55.256482] Code: e8 ac b7 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 2b ba fb ff c3 66 2e 0f 1f 84 00 00 00 00
[   55.275514] RSP: 002b:00007fb9a5514c58 EFLAGS: 00000212 ORIG_RAX: 000000000000002e
[   55.283230] RAX: ffffffffffffffda RBX: 000000000071bf58 RCX: 0000000000452f89
[   55.290491] RDX: 0000000000000080 RSI: 00000000206c8000 RDI: 0000000000000005
[   55.297763] RBP: 000000000000048a R08: 0000000000000000 R09: 0000000000000000
[   55.305043] R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f4d90
[   55.312297] R13: 00000000ffffffff R14: 00007fb9a55156d4 R15: 0000000000000002
[   55.319586] CPU: 0 PID: 4882 Comm: syz-executor5 Not tainted 5.6.0-rc6-syzkaller #0
[   55.327401] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   55.337132] Call Trace:
[   55.339717]  <IRQ>
[   55.341886]  dump_stack+0x12f/0x187
[   55.345574]  tfrc_rx_hist_sample_rtt.cold.3+0x47/0x4c
[   55.350942]  ccid3_hc_rx_packet_recv+0x471/0xec0
[   55.355872]  ? dccp_parse_options+0x333/0x1000
[   55.360561]  dccp_deliver_input_to_ccids+0xcc/0x220
[   55.365611]  dccp_rcv_established+0x49/0x70
[   55.369978]  dccp_v4_do_rcv+0xf4/0x160
[   55.373903]  __sk_receive_skb+0x2b6/0x9e0
[   55.379136]  ? sk_free+0x60/0x60
[   55.382634]  ? dccp_invalid_packet+0x3ec/0x750
[   55.387260]  dccp_v4_rcv+0xc22/0x1c0b
[   55.391126]  ip_protocol_deliver_rcu+0x50b/0x6b0
[   55.395921]  ip_local_deliver_finish+0x1ee/0x2e0
[   55.400708]  ip_local_deliver+0x306/0x450
[   55.404978]  ? ip_local_deliver_finish+0x2e0/0x2e0
[   55.409924]  ? lock_downgrade+0x900/0x900
[   55.414101]  ? ip_protocol_deliver_rcu+0x6b0/0x6b0
[   55.419075]  ip_rcv_finish+0xb0/0x170
[   55.422900]  ip_rcv+0xcb/0x2f0
[   55.426128]  ? ip_local_deliver+0x450/0x450
[   55.430575]  ? ip_rcv_finish_core.isra.16+0x1b90/0x1b90
[   55.436121]  ? ip_local_deliver+0x450/0x450
[   55.440484]  __netif_receive_skb_one_core+0x132/0x190
[   55.445702]  ? __netif_receive_skb_core+0x2a00/0x2a00
[   55.450966]  ? lock_acquire+0x194/0x3e0
[   55.454976]  ? process_backlog+0x1a8/0x700
[   55.459266]  __netif_receive_skb+0x1f/0x1b0
[   55.463609]  process_backlog+0x1f1/0x700
[   55.467688]  ? __do_softirq+0x248/0x94c
[   55.471687]  ? lockdep_hardirqs_on+0x1a1/0x5d0
[   55.476306]  net_rx_action+0x42d/0xde0
[   55.480250]  ? mark_lock+0xc5/0x1200
[   55.484001]  ? napi_busy_loop+0x6e0/0x6e0
[   55.488166]  ? rcu_is_watching+0x31/0x80
[   55.492258]  ? rcu_read_lock_sched_held+0x9c/0xd0
[   55.496125] BUG: please report to dccp@vger.kernel.org => prev = 0, last = 0 at net/dccp/ccids/lib/packet_history.c:412/tfrc_rx_hist_sample_rtt()
[   55.497117]  ? rcu_read_lock_any_held.part.8+0x50/0x50
[   55.497126]  ? __do_softirq+0x1d9/0x94c
[   55.497133]  ? ip_finish_output2+0x709/0x22a0
[   55.497143]  ? trace_hardirqs_on+0x28/0x180
[   55.497161]  __do_softirq+0x248/0x94c
[   55.497186]  ? ip_finish_output2+0x709/0x22a0
[   55.497199]  do_softirq_own_stack+0x2a/0x40
[   55.541279]  </IRQ>
[   55.543512]  do_softirq.part.17+0x11a/0x150
[   55.547827]  __local_bh_enable_ip+0x1ee/0x230
[   55.552325]  ip_finish_output2+0x72d/0x22a0
[   55.556645]  ? ip_frag_next+0xa10/0xa10
[   55.560610]  ? rcu_read_lock_held+0x9c/0xb0
[   55.564919]  ? rcu_read_lock_held_common+0x170/0x170
[   55.570035]  __ip_finish_output+0x401/0xa80
[   55.574429]  ? __ip_finish_output+0x401/0xa80
[   55.579001]  ip_finish_output+0x27/0x170
[   55.583052]  ip_output+0x1c6/0x560
[   55.586622]  ? ip_mc_output+0xd10/0xd10
[   55.590584]  ? __ip_finish_output+0xa80/0xa80
[   55.595064]  ? rcu_read_lock_held_common+0x170/0x170
[   55.600152]  ? rcu_read_lock_held+0x9c/0xb0
[   55.607192]  ip_local_out+0x7e/0x130
[   55.611018]  __ip_queue_xmit+0x700/0x1de0
[   55.615179]  ? __skb_checksum+0x7c0/0x7c0
[   55.619334]  ? skb_send_sock_locked+0x750/0x750
[   55.624013]  ? reqsk_fastopen_remove+0x560/0x560
[   55.628765]  ? dccp_insert_options+0x1e2/0xb20
[   55.633355]  ip_queue_xmit+0x45/0x70
[   55.637096]  dccp_transmit_skb+0xb76/0x12a0
[   55.641440]  ? skb_unlink+0x117/0x1a0
[   55.645251]  dccp_xmit_packet+0x1a0/0x580
[   55.649421]  dccp_write_xmit+0x128/0x180
[   55.654025]  dccp_sendmsg+0x68f/0xdb0
[   55.657840]  ? aa_sk_perm+0x182/0x740
[   55.661666]  ? dccp_disconnect+0xb00/0xb00
[   55.665917]  ? aa_af_perm+0x240/0x240
[   55.669767]  inet_sendmsg+0xbd/0xe0
[   55.673396]  ? inet_send_prepare+0x3a0/0x3a0
[   55.677924]  sock_sendmsg+0xdf/0x110
[   55.681661]  ____sys_sendmsg+0x687/0xae0
[   55.685713]  ? copy_msghdr_from_user+0x20d/0x3f0
[   55.690594]  ? kernel_sendmsg+0x30/0x30
[   55.694576]  ? __fget_files+0x285/0x410
[   55.698562]  ___sys_sendmsg+0xe4/0x160
[   55.702453]  ? sendmsg_copy_msghdr+0x30/0x30
[   55.706873]  ? rcu_read_lock_held_common+0x170/0x170
[   55.711995]  ? __fget_files+0x29f/0x410
[   55.715984]  ? __x64_sys_dup2+0x2e0/0x2e0
[   55.720148]  ? __fget_light+0x1a9/0x230
[   55.724253]  ? __fdget+0xe/0x10
[   55.727555]  __sys_sendmsg+0xd9/0x180
[   55.731356]  ? __sys_sendmsg_sock+0xa0/0xa0
[   55.735701]  ? rcu_read_lock_any_held.part.8+0x50/0x50
[   55.741156]  ? __sched_text_start+0x8/0x8
[   55.745460]  ? entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   55.750832]  __x64_sys_sendmsg+0x73/0xb0
[   55.754926]  do_syscall_64+0xd0/0x630
[   55.758745]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   55.763945] RIP: 0033:0x452f89
[   55.767129] Code: e8 ac b7 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 2b ba fb ff c3 66 2e 0f 1f 84 00 00 00 00
[   55.786043] RSP: 002b:00007fe11b7dac58 EFLAGS: 00000212 ORIG_RAX: 000000000000002e
[   55.793863] RAX: ffffffffffffffda RBX: 000000000071bf58 RCX: 0000000000452f89
[   55.801166] RDX: 0000000000000080 RSI: 00000000206c8000 RDI: 0000000000000005
[   55.808437] RBP: 000000000000048a R08: 0000000000000000 R09: 0000000000000000
[   55.815824] R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f4d90
[   55.823323] R13: 00000000ffffffff R14: 00007fe11b7db6d4 R15: 0000000000000002
[   55.830653] CPU: 1 PID: 4898 Comm: syz-executor Not tainted 5.6.0-rc6-syzkaller #0
[   55.838377] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   55.847823] Call Trace:
[   55.849062] BUG: please report to dccp@vger.kernel.org => prev = 0, last = 0 at net/dccp/ccids/lib/packet_history.c:412/tfrc_rx_hist_sample_rtt()
[   55.850519]  <IRQ>
[   55.850537]  dump_stack+0x12f/0x187
[   55.850561]  tfrc_rx_hist_sample_rtt.cold.3+0x47/0x4c
[   55.874730]  ccid3_hc_rx_packet_recv+0x471/0xec0
[   55.879472]  ? dccp_parse_options+0x333/0x1000
[   55.884272]  dccp_deliver_input_to_ccids+0xcc/0x220
[   55.889311]  dccp_rcv_established+0x49/0x70
[   55.893623]  dccp_v4_do_rcv+0xf4/0x160
[   55.897524]  __sk_receive_skb+0x2b6/0x9e0
[   55.901683]  ? sk_free+0x60/0x60
[   55.905043]  ? dccp_invalid_packet+0x3ec/0x750
[   55.909636]  dccp_v4_rcv+0xc22/0x1c0b
[   55.913450]  ip_protocol_deliver_rcu+0x50b/0x6b0
[   55.918205]  ip_local_deliver_finish+0x1ee/0x2e0
[   55.923152]  ip_local_deliver+0x306/0x450
[   55.927289]  ? ip_local_deliver_finish+0x2e0/0x2e0
[   55.932223]  ? lock_downgrade+0x900/0x900
[   55.936364]  ? ip_protocol_deliver_rcu+0x6b0/0x6b0
[   55.941319]  ip_rcv_finish+0xb0/0x170
[   55.945115]  ip_rcv+0xcb/0x2f0
[   55.948313]  ? ip_local_deliver+0x450/0x450
[   55.952627]  ? ip_rcv_finish_core.isra.16+0x1b90/0x1b90
[   55.958008]  ? ip_local_deliver+0x450/0x450
[   55.962323]  __netif_receive_skb_one_core+0x132/0x190
[   55.967521]  ? __netif_receive_skb_core+0x2a00/0x2a00
[   55.972703]  ? lock_acquire+0x194/0x3e0
[   55.976693]  ? process_backlog+0x1a8/0x700
[   55.981184]  __netif_receive_skb+0x1f/0x1b0
[   55.985495]  process_backlog+0x1f1/0x700
[   55.989544]  ? __do_softirq+0x248/0x94c
[   55.993507]  ? lockdep_hardirqs_on+0x1a1/0x5d0
[   55.998084]  net_rx_action+0x42d/0xde0
[   56.001992]  ? mark_lock+0xc5/0x1200
[   56.005713]  ? napi_busy_loop+0x6e0/0x6e0
[   56.009846]  ? rcu_is_watching+0x31/0x80
[   56.013903]  ? rcu_read_lock_sched_held+0x9c/0xd0
[   56.018732]  ? rcu_read_lock_any_held.part.8+0x50/0x50
[   56.024023]  ? __do_softirq+0x1d9/0x94c
[   56.028009]  ? ip_finish_output2+0x709/0x22a0
[   56.032519]  ? trace_hardirqs_on+0x28/0x180
[   56.036850]  __do_softirq+0x248/0x94c
[   56.040673]  ? ip_finish_output2+0x709/0x22a0
[   56.045354]  do_softirq_own_stack+0x2a/0x40
[   56.049673]  </IRQ>
[   56.051900]  do_softirq.part.17+0x11a/0x150
[   56.057193]  __local_bh_enable_ip+0x1ee/0x230
[   56.061687]  ip_finish_output2+0x72d/0x22a0
[   56.066187]  ? ip_frag_next+0xa10/0xa10
[   56.070175]  ? rcu_read_lock_held+0x9c/0xb0
[   56.074510]  ? rcu_read_lock_held_common+0x170/0x170
[   56.079621]  __ip_finish_output+0x401/0xa80
[   56.084192]  ? __ip_finish_output+0x401/0xa80
[   56.088679]  ip_finish_output+0x27/0x170
[   56.092728]  ip_output+0x1c6/0x560
[   56.096391]  ? ip_mc_output+0xd10/0xd10
[   56.100389]  ? __ip_finish_output+0xa80/0xa80
[   56.104882]  ? rcu_read_lock_held_common+0x170/0x170
[   56.110097]  ? rcu_read_lock_held+0x9c/0xb0
[   56.114419]  ip_local_out+0x7e/0x130
[   56.118124]  __ip_queue_xmit+0x700/0x1de0
[   56.122257]  ? __skb_checksum+0x7c0/0x7c0
[   56.126397]  ? skb_send_sock_locked+0x750/0x750
[   56.131091]  ? reqsk_fastopen_remove+0x560/0x560
[   56.135854]  ? dccp_insert_options+0x1e2/0xb20
[   56.140587]  ip_queue_xmit+0x45/0x70
[   56.144390]  dccp_transmit_skb+0xb76/0x12a0
[   56.148729]  ? skb_unlink+0x117/0x1a0
[   56.152650]  dccp_xmit_packet+0x1a0/0x580
[   56.156813]  dccp_write_xmit+0x128/0x180
[   56.160897]  dccp_sendmsg+0x68f/0xdb0
[   56.164723]  ? aa_sk_perm+0x182/0x740
[   56.168545]  ? dccp_disconnect+0xb00/0xb00
[   56.172809]  ? aa_af_perm+0x240/0x240
[   56.176649]  inet_sendmsg+0xbd/0xe0
[   56.180277]  ? inet_send_prepare+0x3a0/0x3a0
[   56.184702]  sock_sendmsg+0xdf/0x110
[   56.188430]  ____sys_sendmsg+0x687/0xae0
[   56.192508]  ? copy_msghdr_from_user+0x20d/0x3f0
[   56.197288]  ? kernel_sendmsg+0x30/0x30
[   56.201270]  ? __fget_files+0x285/0x410
[   56.205289]  ___sys_sendmsg+0xe4/0x160
[   56.209205]  ? sendmsg_copy_msghdr+0x30/0x30
[   56.213621]  ? rcu_read_lock_held_common+0x170/0x170
[   56.218727]  ? __fget_files+0x29f/0x410
[   56.222748]  ? __x64_sys_dup2+0x2e0/0x2e0
[   56.226911]  ? __fget_light+0x1a9/0x230
[   56.230905]  ? __fdget+0xe/0x10
[   56.234206]  __sys_sendmsg+0xd9/0x180
[   56.238029]  ? __sys_sendmsg_sock+0xa0/0xa0
[   56.242385]  ? rcu_read_lock_any_held.part.8+0x50/0x50
[   56.247673]  ? __sched_text_start+0x8/0x8
[   56.252649]  ? entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   56.258016]  __x64_sys_sendmsg+0x73/0xb0
[   56.262082]  do_syscall_64+0xd0/0x630
[   56.265910]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   56.271098] RIP: 0033:0x452f89
[   56.274289] Code: e8 ac b7 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 2b ba fb ff c3 66 2e 0f 1f 84 00 00 00 00
[   56.293279] RSP: 002b:00007f5aeda3fc58 EFLAGS: 00000212 ORIG_RAX: 000000000000002e
[   56.301102] RAX: ffffffffffffffda RBX: 000000000071bf58 RCX: 0000000000452f89
[   56.308554] RDX: 0000000000000080 RSI: 00000000206c8000 RDI: 0000000000000005
[   56.316215] RBP: 000000000000048a R08: 0000000000000000 R09: 0000000000000000
[   56.324365] R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f4d90
[   56.331635] R13: 00000000ffffffff R14: 00007f5aeda406d4 R15: 0000000000000002
[   56.338946] CPU: 0 PID: 4901 Comm: syz-executor1 Not tainted 5.6.0-rc6-syzkaller #0
[   56.346844] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   56.356285] Call Trace:
[   56.358932]  <IRQ>
[   56.361125]  dump_stack+0x12f/0x187
[   56.364957]  tfrc_rx_hist_sample_rtt.cold.3+0x47/0x4c
[   56.370240]  ccid3_hc_rx_packet_recv+0x471/0xec0
[   56.375073]  ? dccp_parse_options+0x333/0x1000
[   56.379677]  dccp_deliver_input_to_ccids+0xcc/0x220
[   56.384797]  dccp_rcv_established+0x49/0x70
[   56.389979]  dccp_v4_do_rcv+0xf4/0x160
[   56.394028]  __sk_receive_skb+0x2b6/0x9e0
[   56.398548]  ? sk_free+0x60/0x60
[   56.402014]  ? dccp_invalid_packet+0x3ec/0x750
[   56.407995]  dccp_v4_rcv+0xc22/0x1c0b
[   56.412160]  ip_protocol_deliver_rcu+0x50b/0x6b0
[   56.417520]  ip_local_deliver_finish+0x1ee/0x2e0
[   56.422481]  ip_local_deliver+0x306/0x450
[   56.426651]  ? ip_local_deliver_finish+0x2e0/0x2e0
[   56.431689]  ? lock_downgrade+0x900/0x900
[   56.436132]  ? ip_protocol_deliver_rcu+0x6b0/0x6b0
[   56.441158]  ip_rcv_finish+0xb0/0x170
[   56.445349]  ip_rcv+0xcb/0x2f0
[   56.448580]  ? ip_local_deliver+0x450/0x450
[   56.453006]  ? ip_rcv_finish_core.isra.16+0x1b90/0x1b90
[   56.458908]  ? ip_local_deliver+0x450/0x450
[   56.464070]  __netif_receive_skb_one_core+0x132/0x190
[   56.469452]  ? __netif_receive_skb_core+0x2a00/0x2a00
[   56.474843]  ? lock_acquire+0x194/0x3e0
[   56.479105]  ? process_backlog+0x1a8/0x700
[   56.483603]  __netif_receive_skb+0x1f/0x1b0
[   56.487932]  process_backlog+0x1f1/0x700
[   56.492097]  ? __do_softirq+0x248/0x94c
[   56.496216]  ? lockdep_hardirqs_on+0x1a1/0x5d0
[   56.500821]  net_rx_action+0x42d/0xde0
[   56.504722]  ? mark_lock+0xc5/0x1200
[   56.508544]  ? napi_busy_loop+0x6e0/0x6e0
[   56.512955]  ? rcu_is_watching+0x31/0x80
[   56.517016]  ? rcu_read_lock_sched_held+0x9c/0xd0
[   56.521850]  ? rcu_read_lock_any_held.part.8+0x50/0x50
[   56.527113]  ? __do_softirq+0x1d9/0x94c
[   56.531177]  ? ip_finish_output2+0x709/0x22a0
[   56.535681]  ? trace_hardirqs_on+0x28/0x180
[   56.540093]  __do_softirq+0x248/0x94c
[   56.543892]  ? ip_finish_output2+0x709/0x22a0
[   56.548906]  do_softirq_own_stack+0x2a/0x40
[   56.553221]  </IRQ>
[   56.555626]  do_softirq.part.17+0x11a/0x150
[   56.560197]  __local_bh_enable_ip+0x1ee/0x230
[   56.564692]  ip_finish_output2+0x72d/0x22a0
[   56.569381]  ? ip_frag_next+0xa10/0xa10
[   56.573358]  ? rcu_read_lock_held+0x9c/0xb0
[   56.577760]  ? rcu_read_lock_held_common+0x170/0x170
[   56.583229]  __ip_finish_output+0x401/0xa80
[   56.587649]  ? __ip_finish_output+0x401/0xa80
[   56.592259]  ip_finish_output+0x27/0x170
[   56.596440]  ip_output+0x1c6/0x560
[   56.600080]  ? ip_mc_output+0xd10/0xd10
[   56.604063]  ? __ip_finish_output+0xa80/0xa80
[   56.608540]  ? rcu_read_lock_held_common+0x170/0x170
[   56.614191]  ? rcu_read_lock_held+0x9c/0xb0
[   56.618600]  ip_local_out+0x7e/0x130
[   56.622306]  __ip_queue_xmit+0x700/0x1de0
[   56.626459]  ? __skb_checksum+0x7c0/0x7c0
[   56.630639]  ? skb_send_sock_locked+0x750/0x750
[   56.635376]  ? reqsk_fastopen_remove+0x560/0x560
[   56.640182]  ? dccp_insert_options+0x1e2/0xb20
[   56.644858]  ip_queue_xmit+0x45/0x70
[   56.648653]  dccp_transmit_skb+0xb76/0x12a0
[   56.653157]  ? skb_unlink+0x117/0x1a0
[   56.657158]  dccp_xmit_packet+0x1a0/0x580
[   56.661316]  dccp_write_xmit+0x128/0x180
[   56.665806]  dccp_sendmsg+0x68f/0xdb0
[   56.669869]  ? aa_sk_perm+0x182/0x740
[   56.673667]  ? dccp_disconnect+0xb00/0xb00
[   56.677888]  ? aa_af_perm+0x240/0x240
[   56.681789]  inet_sendmsg+0xbd/0xe0
[   56.685425]  ? inet_send_prepare+0x3a0/0x3a0
[   56.690423]  sock_sendmsg+0xdf/0x110
[   56.694135]  ____sys_sendmsg+0x687/0xae0
[   56.698182]  ? copy_msghdr_from_user+0x20d/0x3f0
[   56.703033]  ? kernel_sendmsg+0x30/0x30
[   56.707012]  ? __fget_files+0x285/0x410
[   56.710976]  ___sys_sendmsg+0xe4/0x160
[   56.714849]  ? sendmsg_copy_msghdr+0x30/0x30
[   56.719265]  ? rcu_read_lock_held_common+0x170/0x170
[   56.724378]  ? __fget_files+0x29f/0x410
[   56.728357]  ? __x64_sys_dup2+0x2e0/0x2e0
[   56.732511]  ? __switch_to_asm+0x34/0x70
[   56.736573]  ? __switch_to_asm+0x34/0x70
[   56.740654]  ? __fget_light+0x1a9/0x230
[   56.744631]  ? __fdget+0xe/0x10
[   56.747924]  __sys_sendmsg+0xd9/0x180
[   56.751750]  ? __sys_sendmsg_sock+0xa0/0xa0
[   56.756083]  ? rcu_read_lock_any_held.part.8+0x50/0x50
[   56.761346]  ? __sched_text_start+0x8/0x8
[   56.765493]  ? entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   56.770847]  __x64_sys_sendmsg+0x73/0xb0
[   56.774896]  do_syscall_64+0xd0/0x630
[   56.778709]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   56.785619] RIP: 0033:0x452f89
[   56.788804] Code: e8 ac b7 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 2b ba fb ff c3 66 2e 0f 1f 84 00 00 00 00
[   56.807783] RSP: 002b:00007ff685759c58 EFLAGS: 00000212 ORIG_RAX: 000000000000002e
[   56.815497] RAX: ffffffffffffffda RBX: 000000000071bf58 RCX: 0000000000452f89
[   56.822857] RDX: 0000000000000080 RSI: 00000000206c8000 RDI: 0000000000000005
[   56.830196] RBP: 000000000000048a R08: 0000000000000000 R09: 0000000000000000
[   56.837824] R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f4d90
[   56.845076] R13: 00000000ffffffff R14: 00007ff68575a6d4 R15: 0000000000000002
[   56.855935] net_ratelimit: 12 callbacks suppressed
[   56.855939] dccp_close: ABORT with 24 bytes unread
[   56.871654] dccp_close: ABORT with 24 bytes unread
[   56.872840] dccp_close: ABORT with 24 bytes unread
[   56.885393] dccp_close: ABORT with 24 bytes unread
[   56.890649] dccp_close: ABORT with 289 bytes unread
[   56.896526] dccp_close: ABORT with 393 bytes unread
[   56.902063] dccp_close: ABORT with 289 bytes unread
[   56.903495] dccp_close: ABORT with 24 bytes unread
[   56.916756] dccp_close: ABORT with 24 bytes unread
[   56.922961] dccp_close: ABORT with 393 bytes unread
[   56.963488] BUG: please report to dccp@vger.kernel.org => prev = 0, last = 0 at net/dccp/ccids/lib/packet_history.c:412/tfrc_rx_hist_sample_rtt()
[   56.976779] CPU: 1 PID: 16 Comm: ksoftirqd/1 Not tainted 5.6.0-rc6-syzkaller #0
[   56.984245] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   56.993906] Call Trace:
[   56.996524]  dump_stack+0x12f/0x187
[   57.000187]  tfrc_rx_hist_sample_rtt.cold.3+0x47/0x4c
[   57.000637] BUG: please report to dccp@vger.kernel.org => prev = 0, last = 0 at net/dccp/ccids/lib/packet_history.c:412/tfrc_rx_hist_sample_rtt()
[   57.005401]  ccid3_hc_rx_packet_recv+0x471/0xec0
[   57.005407]  ? dccp_parse_options+0x333/0x1000
[   57.005437]  dccp_deliver_input_to_ccids+0xcc/0x220
[   57.005449]  dccp_rcv_established+0x49/0x70
[   57.005460]  dccp_v4_do_rcv+0xf4/0x160
[   57.005477]  __sk_receive_skb+0x2b6/0x9e0
[   57.045302]  ? sk_free+0x60/0x60
[   57.048661]  ? dccp_invalid_packet+0x3ec/0x750
[   57.053239]  dccp_v4_rcv+0xc22/0x1c0b
[   57.057069]  ip_protocol_deliver_rcu+0x50b/0x6b0
[   57.061831]  ip_local_deliver_finish+0x1ee/0x2e0
[   57.066578]  ip_local_deliver+0x306/0x450
[   57.070714]  ? ip_local_deliver_finish+0x2e0/0x2e0
[   57.075626]  ? lock_downgrade+0x900/0x900
[   57.079762]  ? ip_protocol_deliver_rcu+0x6b0/0x6b0
[   57.084700]  ip_rcv_finish+0xb0/0x170
[   57.088485]  ip_rcv+0xcb/0x2f0
[   57.091663]  ? ip_local_deliver+0x450/0x450
[   57.095984]  ? ip_rcv_finish_core.isra.16+0x1b90/0x1b90
[   57.101351]  ? ip_local_deliver+0x450/0x450
[   57.105672]  __netif_receive_skb_one_core+0x132/0x190
[   57.110848]  ? __netif_receive_skb_core+0x2a00/0x2a00
[   57.116034]  ? lock_acquire+0x194/0x3e0
[   57.119991]  ? process_backlog+0x1a8/0x700
[   57.124233]  __netif_receive_skb+0x1f/0x1b0
[   57.128557]  process_backlog+0x1f1/0x700
[   57.132699]  ? __do_softirq+0x248/0x94c
[   57.136661]  ? lockdep_hardirqs_on+0x1a1/0x5d0
[   57.141237]  net_rx_action+0x42d/0xde0
[   57.145124]  ? napi_busy_loop+0x6e0/0x6e0
[   57.149269]  ? rcu_is_watching+0x31/0x80
[   57.153320]  ? rcu_read_lock_sched_held+0x9c/0xd0
[   57.158171]  ? rcu_read_lock_any_held.part.8+0x50/0x50
[   57.163451]  ? __do_softirq+0x1d9/0x94c
[   57.167429]  ? trace_hardirqs_on+0x28/0x180
[   57.171742]  __do_softirq+0x248/0x94c
[   57.175548]  ? takeover_tasklets+0x7b0/0x7b0
[   57.180811]  run_ksoftirqd+0x88/0x100
[   57.184606]  smpboot_thread_fn+0x342/0x790
[   57.188832]  ? smpboot_unregister_percpu_thread+0x180/0x180
[   57.194653]  ? __kasan_check_read+0x11/0x20
[   57.199045]  ? __kthread_parkme+0xc8/0x1a0
[   57.203276]  ? __kasan_check_read+0x11/0x20
[   57.207610]  kthread+0x334/0x3f0
[   57.210974]  ? smpboot_unregister_percpu_thread+0x180/0x180
[   57.216669]  ? kthread_mod_delayed_work+0x190/0x190
[   57.221676]  ret_from_fork+0x3a/0x50
[   57.225422] CPU: 0 PID: 4931 Comm: syz-executor1 Not tainted 5.6.0-rc6-syzkaller #0
[   57.233258] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   57.242629] Call Trace:
[   57.245234]  <IRQ>
[   57.247440]  dump_stack+0x12f/0x187
[   57.251290]  tfrc_rx_hist_sample_rtt.cold.3+0x47/0x4c
[   57.256530]  ccid3_hc_rx_packet_recv+0x471/0xec0
[   57.261312]  ? dccp_parse_options+0x333/0x1000
[   57.265942]  dccp_deliver_input_to_ccids+0xcc/0x220
[   57.271119]  dccp_rcv_established+0x49/0x70
[   57.275554]  dccp_v4_do_rcv+0xf4/0x160
[   57.279467]  __sk_receive_skb+0x2b6/0x9e0
[   57.283651]  ? sk_free+0x60/0x60
[   57.287044]  ? dccp_invalid_packet+0x3ec/0x750
[   57.291687]  dccp_v4_rcv+0xc22/0x1c0b
[   57.295539]  ip_protocol_deliver_rcu+0x50b/0x6b0
[   57.300344]  ip_local_deliver_finish+0x1ee/0x2e0
[   57.305122]  ip_local_deliver+0x306/0x450
[   57.309297]  ? ip_local_deliver_finish+0x2e0/0x2e0
[   57.314244]  ? lock_downgrade+0x900/0x900
[   57.318421]  ? ip_protocol_deliver_rcu+0x6b0/0x6b0
[   57.323386]  ip_rcv_finish+0xb0/0x170
[   57.324355] BUG: please report to dccp@vger.kernel.org => prev = 0, last = 0 at net/dccp/ccids/lib/packet_history.c:412/tfrc_rx_hist_sample_rtt()
[   57.327234]  ip_rcv+0xcb/0x2f0
[   57.327248]  ? ip_local_deliver+0x450/0x450
[   57.327266]  ? ip_rcv_finish_core.isra.16+0x1b90/0x1b90
[   57.327286]  ? ip_local_deliver+0x450/0x450
[   57.327300]  __netif_receive_skb_one_core+0x132/0x190
[   57.327311]  ? __netif_receive_skb_core+0x2a00/0x2a00
[   57.368110]  ? lock_acquire+0x194/0x3e0
[   57.372073]  ? process_backlog+0x1a8/0x700
[   57.376296]  __netif_receive_skb+0x1f/0x1b0
[   57.380606]  process_backlog+0x1f1/0x700
[   57.384651]  ? __do_softirq+0x248/0x94c
[   57.388613]  ? lockdep_hardirqs_on+0x1a1/0x5d0
[   57.393189]  net_rx_action+0x42d/0xde0
[   57.397066]  ? mark_lock+0xc5/0x1200
[   57.400771]  ? napi_busy_loop+0x6e0/0x6e0
[   57.404899]  ? rcu_is_watching+0x31/0x80
[   57.408953]  ? rcu_read_lock_sched_held+0x9c/0xd0
[   57.413793]  ? rcu_read_lock_any_held.part.8+0x50/0x50
[   57.419050]  ? __do_softirq+0x1d9/0x94c
[   57.423192]  ? ip_finish_output2+0x709/0x22a0
[   57.427701]  ? trace_hardirqs_on+0x28/0x180
[   57.432031]  __do_softirq+0x248/0x94c
[   57.435859]  ? ip_finish_output2+0x709/0x22a0
[   57.440367]  do_softirq_own_stack+0x2a/0x40
[   57.444681]  </IRQ>
[   57.446908]  do_softirq.part.17+0x11a/0x150
[   57.451225]  __local_bh_enable_ip+0x1ee/0x230
[   57.455717]  ip_finish_output2+0x72d/0x22a0
[   57.460035]  ? ip_frag_next+0xa10/0xa10
[   57.464008]  ? rcu_read_lock_held+0x9c/0xb0
[   57.468333]  ? rcu_read_lock_held_common+0x170/0x170
[   57.473428]  __ip_finish_output+0x401/0xa80
[   57.477819]  ? __ip_finish_output+0x401/0xa80
[   57.482306]  ip_finish_output+0x27/0x170
[   57.486355]  ip_output+0x1c6/0x560
[   57.490017]  ? ip_mc_output+0xd10/0xd10
[   57.493979]  ? __ip_finish_output+0xa80/0xa80
[   57.498469]  ? rcu_read_lock_held_common+0x170/0x170
[   57.503565]  ? rcu_read_lock_held+0x9c/0xb0
[   57.507875]  ip_local_out+0x7e/0x130
[   57.511578]  __ip_queue_xmit+0x700/0x1de0
[   57.515730]  ? __skb_checksum+0x7c0/0x7c0
[   57.519892]  ? skb_send_sock_locked+0x750/0x750
[   57.524667]  ? reqsk_fastopen_remove+0x560/0x560
[   57.529428]  ? dccp_insert_options+0x1e2/0xb20
[   57.534014]  ip_queue_xmit+0x45/0x70
[   57.537716]  dccp_transmit_skb+0xb76/0x12a0
[   57.542039]  ? skb_unlink+0x117/0x1a0
[   57.545844]  dccp_xmit_packet+0x1a0/0x580
[   57.550009]  dccp_write_xmit+0x128/0x180
[   57.554061]  dccp_sendmsg+0x68f/0xdb0
[   57.557848]  ? aa_sk_perm+0x182/0x740
[   57.561651]  ? dccp_disconnect+0xb00/0xb00
[   57.565885]  ? aa_af_perm+0x240/0x240
[   57.569849]  inet_sendmsg+0xbd/0xe0
[   57.573478]  ? inet_send_prepare+0x3a0/0x3a0
[   57.577898]  sock_sendmsg+0xdf/0x110
[   57.581614]  ____sys_sendmsg+0x687/0xae0
[   57.585686]  ? copy_msghdr_from_user+0x20d/0x3f0
[   57.590455]  ? kernel_sendmsg+0x30/0x30
[   57.594542]  ? __fget_files+0x285/0x410
[   57.598543]  ___sys_sendmsg+0xe4/0x160
[   57.602444]  ? sendmsg_copy_msghdr+0x30/0x30
[   57.606867]  ? rcu_read_lock_held_common+0x170/0x170
[   57.611981]  ? __lock_acquire+0xfac/0x47f0
[   57.616221]  ? __fget_files+0x29f/0x410
[   57.620214]  ? __x64_sys_dup2+0x2e0/0x2e0
[   57.624388]  ? __fget_light+0x1a9/0x230
[   57.628391]  ? __fdget+0xe/0x10
[   57.631678]  __sys_sendmsg+0xd9/0x180
[   57.635485]  ? __sys_sendmsg_sock+0xa0/0xa0
[   57.639835]  ? rcu_read_lock_any_held.part.8+0x50/0x50
[   57.645104]  ? __sched_text_start+0x8/0x8
[   57.649253]  ? entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   57.654618]  __x64_sys_sendmsg+0x73/0xb0
[   57.658704]  do_syscall_64+0xd0/0x630
[   57.662494]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   57.667664] RIP: 0033:0x452f89
[   57.670842] Code: e8 ac b7 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 2b ba fb ff c3 66 2e 0f 1f 84 00 00 00 00
[   57.689815] RSP: 002b:00007ff685759c58 EFLAGS: 00000212 ORIG_RAX: 000000000000002e
[   57.697508] RAX: ffffffffffffffda RBX: 000000000071bf58 RCX: 0000000000452f89
[   57.704770] RDX: 0000000000000080 RSI: 00000000206c8000 RDI: 0000000000000005
[   57.712033] RBP: 000000000000048a R08: 0000000000000000 R09: 0000000000000000
[   57.719304] R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f4d90
[   57.726557] R13: 00000000ffffffff R14: 00007ff68575a6d4 R15: 0000000000000002
[   57.733856] CPU: 1 PID: 4941 Comm: syz-executor5 Not tainted 5.6.0-rc6-syzkaller #0
[   57.741669] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   57.751036] Call Trace:
[   57.753628]  <IRQ>
[   57.755795]  dump_stack+0x12f/0x187
[   57.759459]  tfrc_rx_hist_sample_rtt.cold.3+0x47/0x4c
[   57.764697]  ccid3_hc_rx_packet_recv+0x471/0xec0
[   57.769498]  ? dccp_parse_options+0x333/0x1000
[   57.774127]  dccp_deliver_input_to_ccids+0xcc/0x220
[   57.779174]  dccp_rcv_established+0x49/0x70
[   57.783526]  dccp_v4_do_rcv+0xf4/0x160
[   57.787463]  __sk_receive_skb+0x2b6/0x9e0
[   57.791637]  ? sk_free+0x60/0x60
[   57.795033]  ? dccp_invalid_packet+0x3ec/0x750
[   57.799691]  dccp_v4_rcv+0xc22/0x1c0b
[   57.803544]  ip_protocol_deliver_rcu+0x50b/0x6b0
[   57.808362]  ip_local_deliver_finish+0x1ee/0x2e0
[   57.813257]  ip_local_deliver+0x306/0x450
[   57.817438]  ? ip_local_deliver_finish+0x2e0/0x2e0
[   57.822402]  ? lock_downgrade+0x900/0x900
[   57.826581]  ? ip_protocol_deliver_rcu+0x6b0/0x6b0
[   57.831606]  ip_rcv_finish+0xb0/0x170
[   57.835471]  ip_rcv+0xcb/0x2f0
[   57.838685]  ? ip_local_deliver+0x450/0x450
[   57.843035]  ? ip_rcv_finish_core.isra.16+0x1b90/0x1b90
[   57.848433]  ? ip_local_deliver+0x450/0x450
[   57.852772]  __netif_receive_skb_one_core+0x132/0x190
[   57.857989]  ? __netif_receive_skb_core+0x2a00/0x2a00
[   57.863263]  ? lock_acquire+0x194/0x3e0
[   57.867270]  ? process_backlog+0x1a8/0x700
[   57.871535]  __netif_receive_skb+0x1f/0x1b0
[   57.875917]  process_backlog+0x1f1/0x700
[   57.879991]  ? __do_softirq+0x248/0x94c
[   57.883986]  ? lockdep_hardirqs_on+0x1a1/0x5d0
[   57.888643]  net_rx_action+0x42d/0xde0
[   57.892595]  ? mark_lock+0xc5/0x1200
[   57.896346]  ? napi_busy_loop+0x6e0/0x6e0
[   57.900506]  ? rcu_is_watching+0x31/0x80
[   57.904597]  ? rcu_read_lock_sched_held+0x9c/0xd0
[   57.909486]  ? rcu_read_lock_any_held.part.8+0x50/0x50
[   57.914780]  ? __do_softirq+0x1d9/0x94c
[   57.918783]  ? ip_finish_output2+0x709/0x22a0
[   57.923315]  ? trace_hardirqs_on+0x28/0x180
[   57.927691]  __do_softirq+0x248/0x94c
[   57.931540]  ? ip_finish_output2+0x709/0x22a0
[   57.936071]  do_softirq_own_stack+0x2a/0x40
[   57.940431]  </IRQ>
[   57.942079] BUG: please report to dccp@vger.kernel.org => prev = 0, last = 0 at net/dccp/ccids/lib/packet_history.c:412/tfrc_rx_hist_sample_rtt()
[   57.942683]  do_softirq.part.17+0x11a/0x150
[   57.942696]  __local_bh_enable_ip+0x1ee/0x230
[   57.964868]  ip_finish_output2+0x72d/0x22a0
[   57.969202]  ? ip_frag_next+0xa10/0xa10
[   57.973168]  ? rcu_read_lock_held+0x9c/0xb0
[   57.977484]  ? rcu_read_lock_held_common+0x170/0x170
[   57.982592]  __ip_finish_output+0x401/0xa80
[   57.986945]  ? __ip_finish_output+0x401/0xa80
[   57.991456]  ip_finish_output+0x27/0x170
[   57.995535]  ip_output+0x1c6/0x560
[   57.999262]  ? ip_mc_output+0xd10/0xd10
[   58.003245]  ? __ip_finish_output+0xa80/0xa80
[   58.007740]  ? rcu_read_lock_held_common+0x170/0x170
[   58.013047]  ? rcu_read_lock_held+0x9c/0xb0
[   58.017362]  ip_local_out+0x7e/0x130
[   58.021111]  __ip_queue_xmit+0x700/0x1de0
[   58.025271]  ? __skb_checksum+0x7c0/0x7c0
[   58.029423]  ? skb_send_sock_locked+0x750/0x750
[   58.034089]  ? reqsk_fastopen_remove+0x560/0x560
[   58.038830]  ? dccp_insert_options+0x1e2/0xb20
[   58.043416]  ip_queue_xmit+0x45/0x70
[   58.047117]  dccp_transmit_skb+0xb76/0x12a0
[   58.051424]  ? skb_unlink+0x117/0x1a0
[   58.055233]  dccp_xmit_packet+0x1a0/0x580
[   58.059372]  dccp_write_xmit+0x128/0x180
[   58.063426]  dccp_sendmsg+0x68f/0xdb0
[   58.067214]  ? aa_sk_perm+0x182/0x740
[   58.071021]  ? dccp_disconnect+0xb00/0xb00
[   58.075241]  ? aa_af_perm+0x240/0x240
[   58.079069]  inet_sendmsg+0xbd/0xe0
[   58.082686]  ? inet_send_prepare+0x3a0/0x3a0
[   58.087079]  sock_sendmsg+0xdf/0x110
[   58.090782]  ____sys_sendmsg+0x687/0xae0
[   58.094829]  ? copy_msghdr_from_user+0x20d/0x3f0
[   58.099588]  ? kernel_sendmsg+0x30/0x30
[   58.103675]  ? __fget_files+0x285/0x410
[   58.107644]  ___sys_sendmsg+0xe4/0x160
[   58.111741]  ? sendmsg_copy_msghdr+0x30/0x30
[   58.116557]  ? rcu_read_lock_held_common+0x170/0x170
[   58.121784]  ? __fget_files+0x29f/0x410
[   58.125774]  ? __x64_sys_dup2+0x2e0/0x2e0
[   58.130140]  ? __fget_light+0x1a9/0x230
[   58.134136]  ? __fdget+0xe/0x10
[   58.137428]  __sys_sendmsg+0xd9/0x180
[   58.141240]  ? __sys_sendmsg_sock+0xa0/0xa0
[   58.145839]  ? rcu_read_lock_any_held.part.8+0x50/0x50
[   58.151210]  ? __sched_text_start+0x8/0x8
[   58.156083]  ? entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   58.161630]  __x64_sys_sendmsg+0x73/0xb0
[   58.165715]  do_syscall_64+0xd0/0x630
[   58.169599]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   58.174832] RIP: 0033:0x452f89
[   58.178032] Code: e8 ac b7 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 2b ba fb ff c3 66 2e 0f 1f 84 00 00 00 00
[   58.197008] RSP: 002b:00007fe11b7dac58 EFLAGS: 00000212 ORIG_RAX: 000000000000002e
[   58.204716] RAX: ffffffffffffffda RBX: 000000000071bf58 RCX: 0000000000452f89
[   58.211982] RDX: 0000000000000080 RSI: 00000000206c8000 RDI: 0000000000000005
[   58.219237] RBP: 000000000000048a R08: 0000000000000000 R09: 0000000000000000
[   58.226511] R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f4d90
[   58.233767] R13: 00000000ffffffff R14: 00007fe11b7db6d4 R15: 0000000000000002
[   58.241067] CPU: 0 PID: 4975 Comm: syz-executor2 Not tainted 5.6.0-rc6-syzkaller #0
[   58.248881] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   58.258267] Call Trace:
[   58.260862]  <IRQ>
[   58.263036]  dump_stack+0x12f/0x187
[   58.266701]  tfrc_rx_hist_sample_rtt.cold.3+0x47/0x4c
[   58.271931]  ccid3_hc_rx_packet_recv+0x471/0xec0
[   58.276701]  ? dccp_parse_options+0x333/0x1000
[   58.281339]  dccp_deliver_input_to_ccids+0xcc/0x220
[   58.286409]  dccp_rcv_established+0x49/0x70
[   58.290751]  dccp_v4_do_rcv+0xf4/0x160
[   58.294660]  __sk_receive_skb+0x2b6/0x9e0
[   58.298843]  ? sk_free+0x60/0x60
[   58.302239]  ? dccp_invalid_packet+0x3ec/0x750
[   58.307050]  dccp_v4_rcv+0xc22/0x1c0b
[   58.310923]  ip_protocol_deliver_rcu+0x50b/0x6b0
[   58.315730]  ip_local_deliver_finish+0x1ee/0x2e0
[   58.320516]  ip_local_deliver+0x306/0x450
[   58.324722]  ? ip_local_deliver_finish+0x2e0/0x2e0
[   58.330555]  ? lock_downgrade+0x900/0x900
[   58.334954]  ? ip_protocol_deliver_rcu+0x6b0/0x6b0
[   58.339977]  ip_rcv_finish+0xb0/0x170
[   58.343815]  ip_rcv+0xcb/0x2f0
[   58.346505] BUG: please report to dccp@vger.kernel.org => prev = 0, last = 0 at net/dccp/ccids/lib/packet_history.c:412/tfrc_rx_hist_sample_rtt()
[   58.347061]  ? ip_local_deliver+0x450/0x450
[   58.347084]  ? ip_rcv_finish_core.isra.16+0x1b90/0x1b90
[   58.347108]  ? ip_local_deliver+0x450/0x450
[   58.347123]  __netif_receive_skb_one_core+0x132/0x190
[   58.380180]  ? __netif_receive_skb_core+0x2a00/0x2a00
[   58.385396]  ? lock_acquire+0x194/0x3e0
[   58.389379]  ? process_backlog+0x1a8/0x700
[   58.393703]  __netif_receive_skb+0x1f/0x1b0
[   58.398044]  process_backlog+0x1f1/0x700
[   58.402212]  ? __do_softirq+0x248/0x94c
[   58.406211]  ? lockdep_hardirqs_on+0x1a1/0x5d0
[   58.410801]  net_rx_action+0x42d/0xde0
[   58.416244]  ? mark_lock+0xc5/0x1200
[   58.419976]  ? napi_busy_loop+0x6e0/0x6e0
[   58.424106]  ? rcu_is_watching+0x31/0x80
[   58.428162]  ? rcu_read_lock_sched_held+0x9c/0xd0
[   58.433109]  ? rcu_read_lock_any_held.part.8+0x50/0x50
[   58.438394]  ? __do_softirq+0x1d9/0x94c
[   58.442372]  ? ip_finish_output2+0x709/0x22a0
[   58.446874]  ? trace_hardirqs_on+0x28/0x180
[   58.451856]  __do_softirq+0x248/0x94c
[   58.455668]  ? ip_finish_output2+0x709/0x22a0
[   58.460153]  do_softirq_own_stack+0x2a/0x40
[   58.464456]  </IRQ>
[   58.466682]  do_softirq.part.17+0x11a/0x150
[   58.471166]  __local_bh_enable_ip+0x1ee/0x230
[   58.475665]  ip_finish_output2+0x72d/0x22a0
[   58.479992]  ? ip_frag_next+0xa10/0xa10
[   58.483967]  ? rcu_read_lock_held+0x9c/0xb0
[   58.488280]  ? rcu_read_lock_held_common+0x170/0x170
[   58.493545]  __ip_finish_output+0x401/0xa80
[   58.497874]  ? __ip_finish_output+0x401/0xa80
[   58.502396]  ip_finish_output+0x27/0x170
[   58.506578]  ip_output+0x1c6/0x560
[   58.510129]  ? ip_mc_output+0xd10/0xd10
[   58.514105]  ? __ip_finish_output+0xa80/0xa80
[   58.518607]  ? rcu_read_lock_held_common+0x170/0x170
[   58.523699]  ? rcu_read_lock_held+0x9c/0xb0
[   58.528012]  ip_local_out+0x7e/0x130
[   58.531716]  __ip_queue_xmit+0x700/0x1de0
[   58.535846]  ? __skb_checksum+0x7c0/0x7c0
[   58.539976]  ? skb_send_sock_locked+0x750/0x750
[   58.544636]  ? reqsk_fastopen_remove+0x560/0x560
[   58.549392]  ? dccp_insert_options+0x1e2/0xb20
[   58.553967]  ip_queue_xmit+0x45/0x70
[   58.557675]  dccp_transmit_skb+0xb76/0x12a0
[   58.561979]  ? skb_unlink+0x117/0x1a0
[   58.565887]  dccp_xmit_packet+0x1a0/0x580
[   58.570985]  dccp_write_xmit+0x128/0x180
[   58.575034]  dccp_sendmsg+0x68f/0xdb0
[   58.578828]  ? aa_sk_perm+0x182/0x740
[   58.582629]  ? dccp_disconnect+0xb00/0xb00
[   58.586847]  ? aa_af_perm+0x240/0x240
[   58.590776]  inet_sendmsg+0xbd/0xe0
[   58.594417]  ? inet_send_prepare+0x3a0/0x3a0
[   58.598833]  sock_sendmsg+0xdf/0x110
[   58.602553]  ____sys_sendmsg+0x687/0xae0
[   58.606603]  ? copy_msghdr_from_user+0x20d/0x3f0
[   58.611350]  ? kernel_sendmsg+0x30/0x30
[   58.615333]  ? __fget_files+0x285/0x410
[   58.619302]  ___sys_sendmsg+0xe4/0x160
[   58.623174]  ? sendmsg_copy_msghdr+0x30/0x30
[   58.627573]  ? rcu_read_lock_held_common+0x170/0x170
[   58.632679]  ? __fget_files+0x29f/0x410
[   58.636652]  ? __x64_sys_dup2+0x2e0/0x2e0
[   58.640801]  ? __fget_light+0x1a9/0x230
[   58.644766]  ? __fdget+0xe/0x10
[   58.648063]  __sys_sendmsg+0xd9/0x180
[   58.651875]  ? __sys_sendmsg_sock+0xa0/0xa0
[   58.656223]  ? rcu_read_lock_any_held.part.8+0x50/0x50
[   58.661543]  ? __sched_text_start+0x8/0x8
[   58.665723]  ? entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   58.671132]  __x64_sys_sendmsg+0x73/0xb0
[   58.675357]  do_syscall_64+0xd0/0x630
[   58.679171]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   58.684368] RIP: 0033:0x452f89
[   58.687565] Code: e8 ac b7 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 2b ba fb ff c3 66 2e 0f 1f 84 00 00 00 00
[   58.706982] RSP: 002b:00007f2ffc5fac58 EFLAGS: 00000212 ORIG_RAX: 000000000000002e
[   58.714675] RAX: ffffffffffffffda RBX: 000000000071bf58 RCX: 0000000000452f89
[   58.721939] RDX: 0000000000000080 RSI: 00000000206c8000 RDI: 0000000000000005
[   58.729205] RBP: 000000000000048a R08: 0000000000000000 R09: 0000000000000000
[   58.736475] R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f4d90
[   58.743731] R13: 00000000ffffffff R14: 00007f2ffc5fb6d4 R15: 0000000000000001
[   58.751021] CPU: 1 PID: 4990 Comm: syz-executor Not tainted 5.6.0-rc6-syzkaller #0
[   58.758745] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   58.768121] Call Trace:
[   58.770715]  <IRQ>
[   58.772918]  dump_stack+0x12f/0x187
[   58.776586]  tfrc_rx_hist_sample_rtt.cold.3+0x47/0x4c
[   58.781805]  ccid3_hc_rx_packet_recv+0x471/0xec0
[   58.786591]  ? dccp_parse_options+0x333/0x1000
[   58.791243]  dccp_deliver_input_to_ccids+0xcc/0x220
[   58.796292]  dccp_rcv_established+0x49/0x70
[   58.800638]  dccp_v4_do_rcv+0xf4/0x160
[   58.804554]  __sk_receive_skb+0x2b6/0x9e0
[   58.806960] BUG: please report to dccp@vger.kernel.org => prev = 0, last = 0 at net/dccp/ccids/lib/packet_history.c:412/tfrc_rx_hist_sample_rtt()
[   58.808754]  ? sk_free+0x60/0x60
[   58.808770]  ? dccp_invalid_packet+0x3ec/0x750
[   58.808794]  dccp_v4_rcv+0xc22/0x1c0b
[   58.833712]  ip_protocol_deliver_rcu+0x50b/0x6b0
[   58.838464]  ip_local_deliver_finish+0x1ee/0x2e0
[   58.843208]  ip_local_deliver+0x306/0x450
[   58.847352]  ? ip_local_deliver_finish+0x2e0/0x2e0
[   58.852281]  ? lock_downgrade+0x900/0x900
[   58.856444]  ? ip_protocol_deliver_rcu+0x6b0/0x6b0
[   58.861373]  ip_rcv_finish+0xb0/0x170
[   58.865166]  ip_rcv+0xcb/0x2f0
[   58.868359]  ? ip_local_deliver+0x450/0x450
[   58.872671]  ? ip_rcv_finish_core.isra.16+0x1b90/0x1b90
[   58.878025]  ? ip_local_deliver+0x450/0x450
[   58.882353]  __netif_receive_skb_one_core+0x132/0x190
[   58.887534]  ? __netif_receive_skb_core+0x2a00/0x2a00
[   58.892745]  ? lock_acquire+0x194/0x3e0
[   58.896712]  ? process_backlog+0x1a8/0x700
[   58.900959]  __netif_receive_skb+0x1f/0x1b0
[   58.905290]  process_backlog+0x1f1/0x700
[   58.909506]  ? __do_softirq+0x248/0x94c
[   58.913492]  ? lockdep_hardirqs_on+0x1a1/0x5d0
[   58.918084]  net_rx_action+0x42d/0xde0
[   58.921972]  ? mark_lock+0xc5/0x1200
[   58.925790]  ? napi_busy_loop+0x6e0/0x6e0
[   58.929948]  ? rcu_is_watching+0x31/0x80
[   58.934010]  ? rcu_read_lock_sched_held+0x9c/0xd0
[   58.939013]  ? rcu_read_lock_any_held.part.8+0x50/0x50
[   58.944288]  ? __do_softirq+0x1d9/0x94c
[   58.948248]  ? ip_finish_output2+0x709/0x22a0
[   58.952750]  ? trace_hardirqs_on+0x28/0x180
[   58.957064]  __do_softirq+0x248/0x94c
[   58.960962]  ? ip_finish_output2+0x709/0x22a0
[   58.965447]  do_softirq_own_stack+0x2a/0x40
[   58.969839]  </IRQ>
[   58.972088]  do_softirq.part.17+0x11a/0x150
[   58.976587]  __local_bh_enable_ip+0x1ee/0x230
[   58.981087]  ip_finish_output2+0x72d/0x22a0
[   58.985885]  ? ip_frag_next+0xa10/0xa10
[   58.989966]  ? rcu_read_lock_held+0x9c/0xb0
[   58.994455]  ? rcu_read_lock_held_common+0x170/0x170
[   58.999597]  __ip_finish_output+0x401/0xa80
[   59.004187]  ? __ip_finish_output+0x401/0xa80
[   59.008771]  ip_finish_output+0x27/0x170
[   59.013028]  ip_output+0x1c6/0x560
[   59.016730]  ? ip_mc_output+0xd10/0xd10
[   59.021617]  ? __ip_finish_output+0xa80/0xa80
[   59.026350]  ? rcu_read_lock_held_common+0x170/0x170
[   59.032173]  ? rcu_read_lock_held+0x9c/0xb0
[   59.039100]  ip_local_out+0x7e/0x130
[   59.043258]  __ip_queue_xmit+0x700/0x1de0
[   59.047393]  ? __skb_checksum+0x7c0/0x7c0
[   59.051780]  ? skb_send_sock_locked+0x750/0x750
[   59.056560]  ? reqsk_fastopen_remove+0x560/0x560
[   59.061570]  ? dccp_insert_options+0x1e2/0xb20
[   59.066263]  ip_queue_xmit+0x45/0x70
[   59.070325]  dccp_transmit_skb+0xb76/0x12a0
[   59.075203]  ? skb_unlink+0x117/0x1a0
[   59.079018]  dccp_xmit_packet+0x1a0/0x580
[   59.083191]  dccp_write_xmit+0x128/0x180
[   59.087280]  dccp_sendmsg+0x68f/0xdb0
[   59.091208]  ? aa_sk_perm+0x182/0x740
[   59.095017]  ? dccp_disconnect+0xb00/0xb00
[   59.099260]  ? aa_af_perm+0x240/0x240
[   59.103073]  inet_sendmsg+0xbd/0xe0
[   59.111597]  ? inet_send_prepare+0x3a0/0x3a0
[   59.116159]  sock_sendmsg+0xdf/0x110
[   59.119902]  ____sys_sendmsg+0x687/0xae0
[   59.124054]  ? copy_msghdr_from_user+0x20d/0x3f0
[   59.128806]  ? kernel_sendmsg+0x30/0x30
[   59.132778]  ? __fget_files+0x285/0x410
[   59.136889]  ___sys_sendmsg+0xe4/0x160
[   59.140789]  ? sendmsg_copy_msghdr+0x30/0x30
[   59.145303]  ? rcu_read_lock_held_common+0x170/0x170
[   59.150435]  ? __fget_files+0x29f/0x410
[   59.154433]  ? __x64_sys_dup2+0x2e0/0x2e0
[   59.160104]  ? __fget_light+0x1a9/0x230
[   59.164201]  ? __fdget+0xe/0x10
[   59.167495]  __sys_sendmsg+0xd9/0x180
[   59.171382]  ? __sys_sendmsg_sock+0xa0/0xa0
[   59.175958]  ? rcu_read_lock_any_held.part.8+0x50/0x50
[   59.182824]  ? __sched_text_start+0x8/0x8
[   59.187333]  ? entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   59.192721]  __x64_sys_sendmsg+0x73/0xb0
[   59.196798]  do_syscall_64+0xd0/0x630
[   59.200797]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   59.206125] RIP: 0033:0x452f89
[   59.209330] Code: e8 ac b7 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 2b ba fb ff c3 66 2e 0f 1f 84 00 00 00 00
[   59.229495] RSP: 002b:00007f5aeda3fc58 EFLAGS: 00000212 ORIG_RAX: 000000000000002e
[   59.237195] RAX: ffffffffffffffda RBX: 000000000071bf58 RCX: 0000000000452f89
[   59.244506] RDX: 0000000000000080 RSI: 00000000206c8000 RDI: 0000000000000005
[   59.251867] RBP: 000000000000048a R08: 0000000000000000 R09: 0000000000000000
[   59.259237] R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f4d90
[   59.266947] R13: 00000000ffffffff R14: 00007f5aeda406d4 R15: 0000000000000002
[   59.274526] CPU: 0 PID: 4999 Comm: syz-executor1 Not tainted 5.6.0-rc6-syzkaller #0
[   59.282346] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   59.283787] BUG: please report to dccp@vger.kernel.org => prev = 0, last = 0 at net/dccp/ccids/lib/packet_history.c:412/tfrc_rx_hist_sample_rtt()
[   59.292238] Call Trace:
[   59.292246]  <IRQ>
[   59.292266]  dump_stack+0x12f/0x187
[   59.292288]  tfrc_rx_hist_sample_rtt.cold.3+0x47/0x4c
[   59.292302]  ccid3_hc_rx_packet_recv+0x471/0xec0
[   59.292308]  ? dccp_parse_options+0x333/0x1000
[   59.292332]  dccp_deliver_input_to_ccids+0xcc/0x220
[   59.292344]  dccp_rcv_established+0x49/0x70
[   59.338110]  dccp_v4_do_rcv+0xf4/0x160
[   59.342020]  __sk_receive_skb+0x2b6/0x9e0
[   59.346431]  ? sk_free+0x60/0x60
[   59.349806]  ? dccp_invalid_packet+0x3ec/0x750
[   59.354403]  dccp_v4_rcv+0xc22/0x1c0b
[   59.358231]  ip_protocol_deliver_rcu+0x50b/0x6b0
[   59.363182]  ip_local_deliver_finish+0x1ee/0x2e0
[   59.367969]  ip_local_deliver+0x306/0x450
[   59.372137]  ? ip_local_deliver_finish+0x2e0/0x2e0
[   59.377091]  ? lock_downgrade+0x900/0x900
[   59.381250]  ? ip_protocol_deliver_rcu+0x6b0/0x6b0
[   59.386211]  ip_rcv_finish+0xb0/0x170
[   59.390024]  ip_rcv+0xcb/0x2f0
[   59.393206]  ? ip_local_deliver+0x450/0x450
[   59.397538]  ? ip_rcv_finish_core.isra.16+0x1b90/0x1b90
[   59.402896]  ? ip_local_deliver+0x450/0x450
[   59.407217]  __netif_receive_skb_one_core+0x132/0x190
[   59.412400]  ? __netif_receive_skb_core+0x2a00/0x2a00
[   59.417602]  ? lock_acquire+0x194/0x3e0
[   59.421574]  ? process_backlog+0x1a8/0x700
[   59.425802]  __netif_receive_skb+0x1f/0x1b0
[   59.430387]  process_backlog+0x1f1/0x700
[   59.434431]  ? __do_softirq+0x248/0x94c
[   59.438398]  ? lockdep_hardirqs_on+0x1a1/0x5d0
[   59.442978]  net_rx_action+0x42d/0xde0
[   59.446854]  ? mark_lock+0xc5/0x1200
[   59.450568]  ? napi_busy_loop+0x6e0/0x6e0
[   59.454711]  ? rcu_is_watching+0x31/0x80
[   59.458762]  ? rcu_read_lock_sched_held+0x9c/0xd0
[   59.463593]  ? rcu_read_lock_any_held.part.8+0x50/0x50
[   59.468938]  ? __do_softirq+0x1d9/0x94c
[   59.472918]  ? ip_finish_output2+0x709/0x22a0
[   59.477414]  ? trace_hardirqs_on+0x28/0x180
[   59.481731]  __do_softirq+0x248/0x94c
[   59.485542]  ? ip_finish_output2+0x709/0x22a0
[   59.490034]  do_softirq_own_stack+0x2a/0x40
[   59.494339]  </IRQ>
[   59.496563]  do_softirq.part.17+0x11a/0x150
[   59.500877]  __local_bh_enable_ip+0x1ee/0x230
[   59.505360]  ip_finish_output2+0x72d/0x22a0
[   59.509698]  ? ip_frag_next+0xa10/0xa10
[   59.513688]  ? rcu_read_lock_held+0x9c/0xb0
[   59.518006]  ? rcu_read_lock_held_common+0x170/0x170
[   59.523272]  __ip_finish_output+0x401/0xa80
[   59.527682]  ? __ip_finish_output+0x401/0xa80
[   59.532189]  ip_finish_output+0x27/0x170
[   59.536240]  ip_output+0x1c6/0x560
[   59.539776]  ? ip_mc_output+0xd10/0xd10
[   59.543741]  ? __ip_finish_output+0xa80/0xa80
[   59.548236]  ? rcu_read_lock_held_common+0x170/0x170
[   59.553345]  ? rcu_read_lock_held+0x9c/0xb0
[   59.557660]  ip_local_out+0x7e/0x130
[   59.561448]  __ip_queue_xmit+0x700/0x1de0
[   59.565768]  ? __skb_checksum+0x7c0/0x7c0
[   59.569916]  ? skb_send_sock_locked+0x750/0x750
[   59.574573]  ? reqsk_fastopen_remove+0x560/0x560
[   59.579330]  ? dccp_insert_options+0x1e2/0xb20
[   59.583994]  ip_queue_xmit+0x45/0x70
[   59.587808]  dccp_transmit_skb+0xb76/0x12a0
[   59.592206]  ? skb_unlink+0x117/0x1a0
[   59.596026]  dccp_xmit_packet+0x1a0/0x580
[   59.600173]  dccp_write_xmit+0x128/0x180
[   59.604224]  dccp_sendmsg+0x68f/0xdb0
[   59.608014]  ? aa_sk_perm+0x182/0x740
[   59.611804]  ? dccp_disconnect+0xb00/0xb00
[   59.616028]  ? aa_af_perm+0x240/0x240
[   59.619846]  inet_sendmsg+0xbd/0xe0
[   59.623479]  ? inet_send_prepare+0x3a0/0x3a0
[   59.627875]  sock_sendmsg+0xdf/0x110
[   59.631590]  ____sys_sendmsg+0x687/0xae0
[   59.635635]  ? copy_msghdr_from_user+0x20d/0x3f0
[   59.640381]  ? kernel_sendmsg+0x30/0x30
[   59.644348]  ? __fget_files+0x285/0x410
[   59.648321]  ___sys_sendmsg+0xe4/0x160
[   59.652200]  ? sendmsg_copy_msghdr+0x30/0x30
[   59.656862]  ? rcu_read_lock_held_common+0x170/0x170
[   59.661963]  ? __fget_files+0x29f/0x410
[   59.666172]  ? __x64_sys_dup2+0x2e0/0x2e0
[   59.670327]  ? release_sock+0x122/0x180
[   59.675094]  ? trace_hardirqs_on+0x28/0x180
[   59.679643]  ? release_sock+0x122/0x180
[   59.683650]  ? __fget_light+0x1a9/0x230
[   59.688139]  ? __fdget+0xe/0x10
[   59.691540]  __sys_sendmsg+0xd9/0x180
[   59.695331]  ? __sys_sendmsg_sock+0xa0/0xa0
[   59.699928]  ? rcu_read_lock_any_held.part.8+0x50/0x50
[   59.705189]  ? __sys_listen+0x1e8/0x230
[   59.709181]  ? entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   59.714548]  __x64_sys_sendmsg+0x73/0xb0
[   59.718605]  do_syscall_64+0xd0/0x630
[   59.722403]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   59.727710] RIP: 0033:0x452f89
[   59.730902] Code: e8 ac b7 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 2b ba fb ff c3 66 2e 0f 1f 84 00 00 00 00
[   59.749822] RSP: 002b:00007ff685759c58 EFLAGS: 00000212 ORIG_RAX: 000000000000002e
[   59.757530] RAX: ffffffffffffffda RBX: 000000000071bf58 RCX: 0000000000452f89
[   59.764890] RDX: 0000000000000080 RSI: 00000000206c8000 RDI: 0000000000000005
[   59.772164] RBP: 000000000000048a R08: 0000000000000000 R09: 0000000000000000
[   59.779537] R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f4d90
[   59.787496] R13: 00000000ffffffff R14: 00007ff68575a6d4 R15: 0000000000000002
[   59.794806] CPU: 1 PID: 16 Comm: ksoftirqd/1 Not tainted 5.6.0-rc6-syzkaller #0
[   59.802324] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   59.811666] Call Trace:
[   59.814244]  dump_stack+0x12f/0x187
[   59.817872]  tfrc_rx_hist_sample_rtt.cold.3+0x47/0x4c
[   59.823055]  ccid3_hc_rx_packet_recv+0x471/0xec0
[   59.827795]  ? dccp_parse_options+0x333/0x1000
[   59.832391]  dccp_deliver_input_to_ccids+0xcc/0x220
[   59.837395]  dccp_rcv_established+0x49/0x70
[   59.841704]  dccp_v4_do_rcv+0xf4/0x160
[   59.845580]  __sk_receive_skb+0x2b6/0x9e0
[   59.849720]  ? sk_free+0x60/0x60
[   59.853088]  ? dccp_invalid_packet+0x3ec/0x750
[   59.857666]  dccp_v4_rcv+0xc22/0x1c0b
[   59.861484]  ip_protocol_deliver_rcu+0x50b/0x6b0
[   59.866240]  ip_local_deliver_finish+0x1ee/0x2e0
[   59.870991]  ip_local_deliver+0x306/0x450
[   59.875129]  ? ip_local_deliver_finish+0x2e0/0x2e0
[   59.880058]  ? lock_downgrade+0x900/0x900
[   59.884216]  ? ip_protocol_deliver_rcu+0x6b0/0x6b0
[   59.889142]  ip_rcv_finish+0xb0/0x170
[   59.892931]  ip_rcv+0xcb/0x2f0
[   59.896122]  ? ip_local_deliver+0x450/0x450
[   59.900431]  ? ip_rcv_finish_core.isra.16+0x1b90/0x1b90
[   59.905805]  ? ip_local_deliver+0x450/0x450
[   59.910112]  __netif_receive_skb_one_core+0x132/0x190
[   59.915299]  ? __netif_receive_skb_core+0x2a00/0x2a00
[   59.920490]  ? lock_acquire+0x194/0x3e0
[   59.924450]  ? process_backlog+0x1a8/0x700
[   59.928674]  __netif_receive_skb+0x1f/0x1b0
[   59.932982]  process_backlog+0x1f1/0x700
[   59.937024]  ? __do_softirq+0x248/0x94c
[   59.940999]  ? lockdep_hardirqs_on+0x1a1/0x5d0
[   59.945576]  net_rx_action+0x42d/0xde0
[   59.949453]  ? trace_hardirqs_on+0x28/0x180
[   59.953777]  ? napi_busy_loop+0x6e0/0x6e0
[   59.957906]  ? rcu_is_watching+0x31/0x80
[   59.961960]  ? rcu_read_lock_sched_held+0x9c/0xd0
[   59.966931]  ? rcu_read_lock_any_held.part.8+0x50/0x50
[   59.972207]  ? __do_softirq+0x1d9/0x94c
[   59.976184]  ? trace_hardirqs_on+0x28/0x180
[   59.980537]  __do_softirq+0x248/0x94c
[   59.984357]  ? takeover_tasklets+0x7b0/0x7b0
[   59.988763]  run_ksoftirqd+0x88/0x100
[   59.992556]  smpboot_thread_fn+0x342/0x790
[   59.996891]  ? smpboot_unregister_percpu_thread+0x180/0x180
[   60.002593]  ? __kasan_check_read+0x11/0x20
[   60.006898]  ? __kthread_parkme+0xc8/0x1a0
[   60.011421]  ? __kasan_check_read+0x11/0x20
[   60.015750]  kthread+0x334/0x3f0
[   60.019128]  ? smpboot_unregister_percpu_thread+0x180/0x180
2020/03/17 01:38:59 executed programs: 56
[   60.024867]  ? kthread_mod_delayed_work+0x190/0x190
[   60.029880]  ret_from_fork+0x3a/0x50
[   60.161924] BUG: please report to dccp@vger.kernel.org => prev = 0, last = 0 at net/dccp/ccids/lib/packet_history.c:412/tfrc_rx_hist_sample_rtt()
[   60.175629] CPU: 1 PID: 5035 Comm: syz-executor1 Not tainted 5.6.0-rc6-syzkaller #0
[   60.183706] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   60.188957] BUG: please report to dccp@vger.kernel.org => prev = 0, last = 0 at net/dccp/ccids/lib/packet_history.c:412/tfrc_rx_hist_sample_rtt()
[   60.193193] Call Trace:
[   60.193197]  <IRQ>
[   60.193214]  dump_stack+0x12f/0x187
[   60.193241]  tfrc_rx_hist_sample_rtt.cold.3+0x47/0x4c
[   60.193260]  ccid3_hc_rx_packet_recv+0x471/0xec0
[   60.193265]  ? dccp_parse_options+0x333/0x1000
[   60.193290]  dccp_deliver_input_to_ccids+0xcc/0x220
[   60.234357]  dccp_rcv_established+0x49/0x70
[   60.238683]  dccp_v4_do_rcv+0xf4/0x160
[   60.242821]  __sk_receive_skb+0x2b6/0x9e0
[   60.247003]  ? sk_free+0x60/0x60
[   60.250384]  ? dccp_invalid_packet+0x3ec/0x750
[   60.254970]  dccp_v4_rcv+0xc22/0x1c0b
[   60.258820]  ip_protocol_deliver_rcu+0x50b/0x6b0
[   60.263580]  ip_local_deliver_finish+0x1ee/0x2e0
[   60.268339]  ip_local_deliver+0x306/0x450
[   60.272490]  ? ip_local_deliver_finish+0x2e0/0x2e0
[   60.277419]  ? lock_downgrade+0x900/0x900
[   60.281576]  ? ip_protocol_deliver_rcu+0x6b0/0x6b0
[   60.286510]  ip_rcv_finish+0xb0/0x170
[   60.290308]  ip_rcv+0xcb/0x2f0
[   60.293490]  ? ip_local_deliver+0x450/0x450
[   60.297803]  ? ip_rcv_finish_core.isra.16+0x1b90/0x1b90
[   60.303171]  ? ip_local_deliver+0x450/0x450
[   60.307494]  __netif_receive_skb_one_core+0x132/0x190
[   60.312691]  ? __netif_receive_skb_core+0x2a00/0x2a00
[   60.317887]  ? lock_acquire+0x194/0x3e0
[   60.321881]  ? process_backlog+0x1a8/0x700
[   60.326111]  __netif_receive_skb+0x1f/0x1b0
[   60.330436]  process_backlog+0x1f1/0x700
[   60.334614]  ? __do_softirq+0x248/0x94c
[   60.338595]  ? lockdep_hardirqs_on+0x1a1/0x5d0
[   60.343197]  net_rx_action+0x42d/0xde0
[   60.347120]  ? mark_lock+0xc5/0x1200
[   60.350953]  ? napi_busy_loop+0x6e0/0x6e0
[   60.355253]  ? rcu_is_watching+0x31/0x80
[   60.359322]  ? rcu_read_lock_sched_held+0x9c/0xd0
[   60.364155]  ? rcu_read_lock_any_held.part.8+0x50/0x50
[   60.369428]  ? __do_softirq+0x1d9/0x94c
[   60.373399]  ? ip_finish_output2+0x709/0x22a0
[   60.377890]  ? trace_hardirqs_on+0x28/0x180
[   60.382211]  __do_softirq+0x248/0x94c
[   60.386021]  ? ip_finish_output2+0x709/0x22a0
[   60.390543]  do_softirq_own_stack+0x2a/0x40
[   60.394879]  </IRQ>
[   60.397119]  do_softirq.part.17+0x11a/0x150
[   60.401441]  __local_bh_enable_ip+0x1ee/0x230
[   60.405932]  ip_finish_output2+0x72d/0x22a0
[   60.410267]  ? ip_frag_next+0xa10/0xa10
[   60.414240]  ? rcu_read_lock_held+0x9c/0xb0
[   60.418554]  ? rcu_read_lock_held_common+0x170/0x170
[   60.423849]  __ip_finish_output+0x401/0xa80
[   60.428282]  ? __ip_finish_output+0x401/0xa80
[   60.432800]  ip_finish_output+0x27/0x170
[   60.438217]  ip_output+0x1c6/0x560
[   60.441791]  ? ip_mc_output+0xd10/0xd10
[   60.445767]  ? __ip_finish_output+0xa80/0xa80
[   60.450252]  ? rcu_read_lock_held_common+0x170/0x170
[   60.455384]  ? rcu_read_lock_held+0x9c/0xb0
[   60.459741]  ip_local_out+0x7e/0x130
[   60.463457]  __ip_queue_xmit+0x700/0x1de0
[   60.467588]  ? __skb_checksum+0x7c0/0x7c0
[   60.471819]  ? skb_send_sock_locked+0x750/0x750
[   60.476470]  ? reqsk_fastopen_remove+0x560/0x560
[   60.481209]  ? dccp_insert_options+0x1e2/0xb20
[   60.485803]  ip_queue_xmit+0x45/0x70
[   60.489519]  dccp_transmit_skb+0xb76/0x12a0
[   60.493911]  ? skb_unlink+0x117/0x1a0
[   60.497718]  dccp_xmit_packet+0x1a0/0x580
[   60.501858]  dccp_write_xmit+0x128/0x180
[   60.505921]  dccp_sendmsg+0x68f/0xdb0
[   60.509711]  ? aa_sk_perm+0x182/0x740
[   60.513502]  ? dccp_disconnect+0xb00/0xb00
[   60.517735]  ? aa_af_perm+0x240/0x240
[   60.521661]  inet_sendmsg+0xbd/0xe0
[   60.525286]  ? inet_send_prepare+0x3a0/0x3a0
[   60.529703]  sock_sendmsg+0xdf/0x110
[   60.533428]  ____sys_sendmsg+0x687/0xae0
[   60.537490]  ? copy_msghdr_from_user+0x20d/0x3f0
[   60.542363]  ? kernel_sendmsg+0x30/0x30
[   60.546351]  ? __fget_files+0x285/0x410
[   60.550329]  ___sys_sendmsg+0xe4/0x160
[   60.554210]  ? sendmsg_copy_msghdr+0x30/0x30
[   60.558615]  ? rcu_read_lock_held_common+0x170/0x170
[   60.563729]  ? __fget_files+0x29f/0x410
[   60.567760]  ? __x64_sys_dup2+0x2e0/0x2e0
[   60.571928]  ? __fget_light+0x1a9/0x230
[   60.575903]  ? __fdget+0xe/0x10
[   60.579167]  ? release_sock+0x122/0x180
[   60.583145]  __sys_sendmsg+0xd9/0x180
[   60.586961]  ? __sys_sendmsg_sock+0xa0/0xa0
[   60.591296]  ? rcu_read_lock_any_held.part.8+0x50/0x50
[   60.596670]  ? __sys_listen+0x1e8/0x230
[   60.600659]  ? entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   60.606051]  __x64_sys_sendmsg+0x73/0xb0
[   60.610139]  do_syscall_64+0xd0/0x630
[   60.613949]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   60.619128] RIP: 0033:0x452f89
[   60.622306] Code: e8 ac b7 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 2b ba fb ff c3 66 2e 0f 1f 84 00 00 00 00
[   60.641208] RSP: 002b:00007ff685738c58 EFLAGS: 00000212 ORIG_RAX: 000000000000002e
[   60.648972] RAX: ffffffffffffffda RBX: 000000000071c010 RCX: 0000000000452f89
[   60.656332] RDX: 0000000000000080 RSI: 00000000206c8000 RDI: 0000000000000005
[   60.663604] RBP: 000000000000048a R08: 0000000000000000 R09: 0000000000000000
[   60.670861] R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f4d90
[   60.678114] R13: 00000000ffffffff R14: 00007ff6857396d4 R15: 0000000000000004
[   60.685403] CPU: 0 PID: 5042 Comm: syz-executor4 Not tainted 5.6.0-rc6-syzkaller #0
[   60.693217] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   60.702583] Call Trace:
[   60.705259]  <IRQ>
[   60.707426]  dump_stack+0x12f/0x187
[   60.711087]  tfrc_rx_hist_sample_rtt.cold.3+0x47/0x4c
[   60.716610]  ccid3_hc_rx_packet_recv+0x471/0xec0
[   60.721381]  ? dccp_parse_options+0x333/0x1000
[   60.726038]  dccp_deliver_input_to_ccids+0xcc/0x220
[   60.731081]  dccp_rcv_established+0x49/0x70
[   60.735435]  dccp_v4_do_rcv+0xf4/0x160
[   60.737256] BUG: please report to dccp@vger.kernel.org => prev = 0, last = 0 at net/dccp/ccids/lib/packet_history.c:412/tfrc_rx_hist_sample_rtt()
[   60.739338]  __sk_receive_skb+0x2b6/0x9e0
[   60.739360]  ? sk_free+0x60/0x60
[   60.739375]  ? dccp_invalid_packet+0x3ec/0x750
[   60.739400]  dccp_v4_rcv+0xc22/0x1c0b
[   60.768700]  ip_protocol_deliver_rcu+0x50b/0x6b0
[   60.773498]  ip_local_deliver_finish+0x1ee/0x2e0
[   60.778242]  ip_local_deliver+0x306/0x450
[   60.782378]  ? ip_local_deliver_finish+0x2e0/0x2e0
[   60.787291]  ? lock_downgrade+0x900/0x900
[   60.791428]  ? ip_protocol_deliver_rcu+0x6b0/0x6b0
[   60.796367]  ip_rcv_finish+0xb0/0x170
[   60.800182]  ip_rcv+0xcb/0x2f0
[   60.803386]  ? ip_local_deliver+0x450/0x450
[   60.807734]  ? ip_rcv_finish_core.isra.16+0x1b90/0x1b90
[   60.813222]  ? ip_local_deliver+0x450/0x450
[   60.817569]  __netif_receive_skb_one_core+0x132/0x190
[   60.822757]  ? __netif_receive_skb_core+0x2a00/0x2a00
[   60.827950]  ? lock_acquire+0x194/0x3e0
[   60.831920]  ? process_backlog+0x1a8/0x700
[   60.836285]  __netif_receive_skb+0x1f/0x1b0
[   60.840606]  process_backlog+0x1f1/0x700
[   60.844671]  ? __do_softirq+0x248/0x94c
[   60.848658]  ? lockdep_hardirqs_on+0x1a1/0x5d0
[   60.853276]  net_rx_action+0x42d/0xde0
[   60.857172]  ? mark_lock+0xc5/0x1200
[   60.860917]  ? napi_busy_loop+0x6e0/0x6e0
[   60.865050]  ? rcu_is_watching+0x31/0x80
[   60.869118]  ? rcu_read_lock_sched_held+0x9c/0xd0
[   60.873944]  ? rcu_read_lock_any_held.part.8+0x50/0x50
[   60.879203]  ? __do_softirq+0x1d9/0x94c
[   60.883165]  ? ip_finish_output2+0x709/0x22a0
[   60.887643]  ? trace_hardirqs_on+0x28/0x180
[   60.891965]  __do_softirq+0x248/0x94c
[   60.895766]  ? ip_finish_output2+0x709/0x22a0
[   60.900250]  do_softirq_own_stack+0x2a/0x40
[   60.904573]  </IRQ>
[   60.906845]  do_softirq.part.17+0x11a/0x150
[   60.911333]  __local_bh_enable_ip+0x1ee/0x230
[   60.915828]  ip_finish_output2+0x72d/0x22a0
[   60.920171]  ? ip_frag_next+0xa10/0xa10
[   60.924158]  ? rcu_read_lock_held+0x9c/0xb0
[   60.928475]  ? rcu_read_lock_held_common+0x170/0x170
[   60.933609]  __ip_finish_output+0x401/0xa80
[   60.937921]  ? __ip_finish_output+0x401/0xa80
[   60.942410]  ip_finish_output+0x27/0x170
[   60.946459]  ip_output+0x1c6/0x560
[   60.949999]  ? ip_mc_output+0xd10/0xd10
[   60.953965]  ? __ip_finish_output+0xa80/0xa80
[   60.958450]  ? rcu_read_lock_held_common+0x170/0x170
[   60.963541]  ? rcu_read_lock_held+0x9c/0xb0
[   60.967866]  ip_local_out+0x7e/0x130
[   60.971571]  __ip_queue_xmit+0x700/0x1de0
[   60.975702]  ? __skb_checksum+0x7c0/0x7c0
[   60.979838]  ? skb_send_sock_locked+0x750/0x750
[   60.984662]  ? reqsk_fastopen_remove+0x560/0x560
[   60.989410]  ? dccp_insert_options+0x1e2/0xb20
[   60.994014]  ip_queue_xmit+0x45/0x70
[   60.997747]  dccp_transmit_skb+0xb76/0x12a0
[   61.002066]  ? skb_unlink+0x117/0x1a0
[   61.005886]  dccp_xmit_packet+0x1a0/0x580
[   61.010028]  dccp_write_xmit+0x128/0x180
[   61.014084]  dccp_sendmsg+0x68f/0xdb0
[   61.017884]  ? aa_sk_perm+0x182/0x740
[   61.021677]  ? dccp_disconnect+0xb00/0xb00
[   61.025908]  ? aa_af_perm+0x240/0x240
[   61.029749]  inet_sendmsg+0xbd/0xe0
[   61.033400]  ? inet_send_prepare+0x3a0/0x3a0
[   61.037818]  sock_sendmsg+0xdf/0x110
[   61.041535]  ____sys_sendmsg+0x687/0xae0
[   61.045601]  ? copy_msghdr_from_user+0x20d/0x3f0
[   61.050362]  ? kernel_sendmsg+0x30/0x30
[   61.054354]  ? __fget_files+0x285/0x410
[   61.058361]  ___sys_sendmsg+0xe4/0x160
[   61.062246]  ? sendmsg_copy_msghdr+0x30/0x30
[   61.066649]  ? rcu_read_lock_held_common+0x170/0x170
[   61.071867]  ? __lock_acquire+0xfac/0x47f0
[   61.076135]  ? __fget_files+0x29f/0x410
[   61.080558]  ? __x64_sys_dup2+0x2e0/0x2e0
[   61.084710]  ? __fget_light+0x1a9/0x230
[   61.088702]  ? __fdget+0xe/0x10
[   61.091983]  __sys_sendmsg+0xd9/0x180
[   61.095773]  ? __sys_sendmsg_sock+0xa0/0xa0
[   61.100101]  ? rcu_read_lock_any_held.part.8+0x50/0x50
[   61.105367]  ? __sched_text_start+0x8/0x8
[   61.109519]  ? entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   61.114886]  __x64_sys_sendmsg+0x73/0xb0
[   61.118965]  do_syscall_64+0xd0/0x630
[   61.122767]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   61.127958] RIP: 0033:0x452f89
[   61.131140] Code: e8 ac b7 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 2b ba fb ff c3 66 2e 0f 1f 84 00 00 00 00
[   61.150028] RSP: 002b:00007f2600aa0c58 EFLAGS: 00000212 ORIG_RAX: 000000000000002e
[   61.157719] RAX: ffffffffffffffda RBX: 000000000071c010 RCX: 0000000000452f89
[   61.165115] RDX: 0000000000000080 RSI: 00000000206c8000 RDI: 0000000000000005
[   61.172409] RBP: 000000000000048a R08: 0000000000000000 R09: 0000000000000000
[   61.179808] R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f4d90
[   61.187065] R13: 00000000ffffffff R14: 00007f2600aa16d4 R15: 0000000000000006
[   61.194445] CPU: 1 PID: 5047 Comm: syz-executor3 Not tainted 5.6.0-rc6-syzkaller #0
[   61.202251] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   61.211607] Call Trace:
[   61.214180]  <IRQ>
[   61.216321]  dump_stack+0x12f/0x187
[   61.219949]  tfrc_rx_hist_sample_rtt.cold.3+0x47/0x4c
[   61.225305]  ccid3_hc_rx_packet_recv+0x471/0xec0
[   61.230155]  ? dccp_parse_options+0x333/0x1000
[   61.234735]  dccp_deliver_input_to_ccids+0xcc/0x220
[   61.239751]  dccp_rcv_established+0x49/0x70
[   61.244088]  dccp_v4_do_rcv+0xf4/0x160
[   61.248593]  __sk_receive_skb+0x2b6/0x9e0
[   61.252770]  ? sk_free+0x60/0x60
[   61.256133]  ? dccp_invalid_packet+0x3ec/0x750
[   61.260710]  dccp_v4_rcv+0xc22/0x1c0b
[   61.264537]  ip_protocol_deliver_rcu+0x50b/0x6b0
[   61.269304]  ip_local_deliver_finish+0x1ee/0x2e0
[   61.274052]  ip_local_deliver+0x306/0x450
[   61.278196]  ? ip_local_deliver_finish+0x2e0/0x2e0
[   61.283125]  ? lock_downgrade+0x900/0x900
[   61.287267]  ? ip_protocol_deliver_rcu+0x6b0/0x6b0
[   61.292200]  ip_rcv_finish+0xb0/0x170
[   61.295989]  ip_rcv+0xcb/0x2f0
[   61.299167]  ? ip_local_deliver+0x450/0x450
[   61.303489]  ? ip_rcv_finish_core.isra.16+0x1b90/0x1b90
[   61.308843]  ? ip_local_deliver+0x450/0x450
[   61.313151]  __netif_receive_skb_one_core+0x132/0x190
[   61.318331]  ? __netif_receive_skb_core+0x2a00/0x2a00
[   61.323525]  ? lock_acquire+0x194/0x3e0
[   61.327503]  ? process_backlog+0x1a8/0x700
[   61.331742]  __netif_receive_skb+0x1f/0x1b0
[   61.336051]  process_backlog+0x1f1/0x700
[   61.340099]  ? __do_softirq+0x248/0x94c
[   61.344160]  ? lockdep_hardirqs_on+0x1a1/0x5d0
[   61.348741]  net_rx_action+0x42d/0xde0
[   61.352619]  ? mark_lock+0xc5/0x1200
[   61.356326]  ? napi_busy_loop+0x6e0/0x6e0
[   61.360456]  ? rcu_is_watching+0x31/0x80
[   61.364505]  ? rcu_read_lock_sched_held+0x9c/0xd0
[   61.369331]  ? rcu_read_lock_any_held.part.8+0x50/0x50
[   61.374588]  ? __do_softirq+0x1d9/0x94c
[   61.378543]  ? ip_finish_output2+0x709/0x22a0
[   61.383039]  ? trace_hardirqs_on+0x28/0x180
[   61.387374]  __do_softirq+0x248/0x94c
[   61.391171]  ? ip_finish_output2+0x709/0x22a0
[   61.395658]  do_softirq_own_stack+0x2a/0x40
[   61.399961]  </IRQ>
[   61.402188]  do_softirq.part.17+0x11a/0x150
[   61.406496]  __local_bh_enable_ip+0x1ee/0x230
[   61.410992]  ip_finish_output2+0x72d/0x22a0
[   61.415316]  ? ip_frag_next+0xa10/0xa10
[   61.419288]  ? rcu_read_lock_held+0x9c/0xb0
[   61.423789]  ? rcu_read_lock_held_common+0x170/0x170
[   61.428882]  __ip_finish_output+0x401/0xa80
[   61.433185]  ? __ip_finish_output+0x401/0xa80
[   61.437670]  ip_finish_output+0x27/0x170
[   61.441719]  ip_output+0x1c6/0x560
[   61.445248]  ? ip_mc_output+0xd10/0xd10
[   61.449215]  ? __ip_finish_output+0xa80/0xa80
[   61.453693]  ? rcu_read_lock_held_common+0x170/0x170
[   61.458784]  ? rcu_read_lock_held+0x9c/0xb0
[   61.463101]  ip_local_out+0x7e/0x130
[   61.466804]  __ip_queue_xmit+0x700/0x1de0
[   61.470939]  ? __skb_checksum+0x7c0/0x7c0
[   61.475066]  ? skb_send_sock_locked+0x750/0x750
[   61.479726]  ? reqsk_fastopen_remove+0x560/0x560
[   61.484463]  ? dccp_insert_options+0x1e2/0xb20
[   61.489040]  ip_queue_xmit+0x45/0x70
[   61.492743]  dccp_transmit_skb+0xb76/0x12a0
[   61.497048]  ? skb_unlink+0x117/0x1a0
[   61.500937]  dccp_xmit_packet+0x1a0/0x580
[   61.505109]  dccp_write_xmit+0x128/0x180
[   61.509287]  dccp_sendmsg+0x68f/0xdb0
[   61.513091]  ? aa_sk_perm+0x182/0x740
[   61.516982]  ? dccp_disconnect+0xb00/0xb00
[   61.521388]  ? aa_af_perm+0x240/0x240
[   61.525393]  inet_sendmsg+0xbd/0xe0
[   61.529056]  ? inet_send_prepare+0x3a0/0x3a0
[   61.533480]  sock_sendmsg+0xdf/0x110
[   61.537354]  ____sys_sendmsg+0x687/0xae0
[   61.541435]  ? copy_msghdr_from_user+0x20d/0x3f0
[   61.546207]  ? kernel_sendmsg+0x30/0x30
[   61.550306]  ? __fget_files+0x285/0x410
[   61.554287]  ___sys_sendmsg+0xe4/0x160
[   61.558169]  ? sendmsg_copy_msghdr+0x30/0x30
[   61.562576]  ? rcu_read_lock_held_common+0x170/0x170
[   61.567684]  ? __fget_files+0x29f/0x410
[   61.571659]  ? __x64_sys_dup2+0x2e0/0x2e0
[   61.575811]  ? __fget_light+0x1a9/0x230
[   61.580129]  ? __fdget+0xe/0x10
[   61.583402]  __sys_sendmsg+0xd9/0x180
[   61.587192]  ? __sys_sendmsg_sock+0xa0/0xa0
[   61.591534]  ? rcu_read_lock_any_held.part.8+0x50/0x50
[   61.596816]  ? __sched_text_start+0x8/0x8
[   61.600979]  ? entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   61.606355]  __x64_sys_sendmsg+0x73/0xb0
[   61.610434]  do_syscall_64+0xd0/0x630
[   61.614222]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   61.619586] RIP: 0033:0x452f89
[   61.622783] Code: e8 ac b7 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 2b ba fb ff c3 66 2e 0f 1f 84 00 00 00 00
[   61.641793] RSP: 002b:00007fb9a5514c58 EFLAGS: 00000212 ORIG_RAX: 000000000000002e
[   61.649736] RAX: ffffffffffffffda RBX: 000000000071bf58 RCX: 0000000000452f89
[   61.657005] RDX: 0000000000000080 RSI: 00000000206c8000 RDI: 0000000000000005