[ OK ] Started OpenBSD Secure Shell server. [ OK ] Listening on Load/Save RF Kill Switch Status /dev/rfkill Watch. [ OK ] Started Serial Getty on ttyS0. [ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.66' (ECDSA) to the list of known hosts. executing program executing program syzkaller login: [ 27.858415] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:101/ccid3_update_send_interval() [ 27.869004] CPU: 1 PID: 7957 Comm: syz-executor909 Not tainted 4.14.265-syzkaller #0 [ 27.877141] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 27.886471] Call Trace: [ 27.889047] dump_stack+0x1b2/0x281 [ 27.892659] ccid3_update_send_interval.cold+0x87/0x93 [ 27.897914] ccid3_hc_tx_packet_sent+0x10f/0x140 [ 27.902656] ? ccid3_update_send_interval+0x100/0x100 [ 27.907820] dccp_xmit_packet+0x24b/0x6d0 [ 27.911943] dccp_write_xmit+0x140/0x1a0 [ 27.916080] dccp_sendmsg+0x6f6/0x890 [ 27.919865] ? dccp_ioctl+0x150/0x150 [ 27.923655] ? copy_msghdr_from_user+0x218/0x3b0 [ 27.928392] ? kernel_recvmsg+0x210/0x210 [ 27.932518] inet_sendmsg+0x11a/0x4e0 [ 27.936298] ? security_socket_sendmsg+0x83/0xb0 [ 27.941025] ? inet_recvmsg+0x4d0/0x4d0 [ 27.944979] sock_sendmsg+0xb5/0x100 [ 27.948668] ___sys_sendmsg+0x326/0x800 [ 27.952616] ? copy_msghdr_from_user+0x3b0/0x3b0 [ 27.957343] ? __release_sock+0x227/0x350 [ 27.961472] ? dccp_sendmsg+0x4eb/0x890 [ 27.965438] ? lock_downgrade+0x740/0x740 [ 27.969564] ? __local_bh_enable_ip+0xc1/0x170 [ 27.974120] ? trace_hardirqs_on_caller+0x3a8/0x580 [ 27.979109] ? dccp_sendmsg+0x4eb/0x890 [ 27.983054] ? __local_bh_enable_ip+0xc1/0x170 [ 27.987612] ? dccp_sendmsg+0x4fa/0x890 [ 27.991560] ? trace_hardirqs_on+0x10/0x10 [ 27.995769] ? dccp_ioctl+0x150/0x150 [ 27.999544] ? __fdget+0x167/0x1f0 [ 28.003061] ? sockfd_lookup_light+0xb2/0x160 [ 28.007527] __sys_sendmmsg+0x129/0x330 [ 28.011476] ? SyS_sendmsg+0x40/0x40 [ 28.015161] ? SyS_sendto+0x1e7/0x2c0 [ 28.018937] ? SyS_accept+0x30/0x30 [ 28.022537] ? up_read+0x17/0x30 [ 28.025876] SyS_sendmmsg+0x2f/0x50 [ 28.029475] ? __sys_sendmmsg+0x330/0x330 [ 28.033594] do_syscall_64+0x1d5/0x640 [ 28.037457] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 28.042707] RIP: 0033:0x7f0d6280eef9 [ 28.046403] RSP: 002b:00007ffc984a0bf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 executing program [ 28.054083] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f0d6280eef9 [ 28.061326] RDX: 0000000000000001 RSI: 0000000020000fc0 RDI: 0000000000000004 [ 28.068568] RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffc984a0d98 [ 28.075811] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc984a0c0c [ 28.083051] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 28.110014] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:101/ccid3_update_send_interval() [ 28.120544] CPU: 1 PID: 7958 Comm: syz-executor909 Not tainted 4.14.265-syzkaller #0 [ 28.128419] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 28.137745] Call Trace: [ 28.140307] dump_stack+0x1b2/0x281 [ 28.143919] ccid3_update_send_interval.cold+0x87/0x93 [ 28.149174] ccid3_hc_tx_packet_sent+0x10f/0x140 [ 28.153908] ? ccid3_update_send_interval+0x100/0x100 [ 28.159074] dccp_xmit_packet+0x24b/0x6d0 [ 28.163202] dccp_write_xmit+0x140/0x1a0 [ 28.167255] dccp_sendmsg+0x6f6/0x890 [ 28.171034] ? dccp_ioctl+0x150/0x150 [ 28.174809] ? copy_msghdr_from_user+0x218/0x3b0 [ 28.179538] ? kernel_recvmsg+0x210/0x210 [ 28.183660] inet_sendmsg+0x11a/0x4e0 [ 28.187440] ? security_socket_sendmsg+0x83/0xb0 [ 28.192169] ? inet_recvmsg+0x4d0/0x4d0 [ 28.196124] sock_sendmsg+0xb5/0x100 [ 28.199815] ___sys_sendmsg+0x326/0x800 [ 28.203760] ? copy_msghdr_from_user+0x3b0/0x3b0 [ 28.208489] ? __release_sock+0x227/0x350 [ 28.212618] ? dccp_sendmsg+0x4eb/0x890 [ 28.216568] ? lock_downgrade+0x740/0x740 [ 28.220699] ? __local_bh_enable_ip+0xc1/0x170 [ 28.225252] ? trace_hardirqs_on_caller+0x3a8/0x580 [ 28.230239] ? dccp_sendmsg+0x4eb/0x890 [ 28.234191] ? __local_bh_enable_ip+0xc1/0x170 [ 28.238754] ? dccp_sendmsg+0x4fa/0x890 [ 28.242699] ? trace_hardirqs_on+0x10/0x10 [ 28.246906] ? dccp_ioctl+0x150/0x150 [ 28.250679] ? __fdget+0x167/0x1f0 [ 28.254209] ? sockfd_lookup_light+0xb2/0x160 [ 28.258777] __sys_sendmmsg+0x129/0x330 [ 28.262725] ? SyS_sendmsg+0x40/0x40 [ 28.266411] ? SyS_sendto+0x1e7/0x2c0 [ 28.270192] ? SyS_accept+0x30/0x30 [ 28.273798] ? up_read+0x17/0x30 [ 28.277139] SyS_sendmmsg+0x2f/0x50 [ 28.280740] ? __sys_sendmmsg+0x330/0x330 [ 28.284875] do_syscall_64+0x1d5/0x640 [ 28.288742] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 28.293910] RIP: 0033:0x7f0d6280eef9 [ 28.297607] RSP: 002b:00007ffc984a0bf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 executing program [ 28.305290] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f0d6280eef9 [ 28.312532] RDX: 0000000000000001 RSI: 0000000020000fc0 RDI: 0000000000000004 [ 28.319773] RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffc984a0d98 [ 28.327019] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc984a0c0c [ 28.334261] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 28.361359] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:101/ccid3_update_send_interval() [ 28.371947] CPU: 1 PID: 7959 Comm: syz-executor909 Not tainted 4.14.265-syzkaller #0 [ 28.379814] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 28.389144] Call Trace: [ 28.391714] dump_stack+0x1b2/0x281 [ 28.395321] ccid3_update_send_interval.cold+0x87/0x93 [ 28.400574] ccid3_hc_tx_packet_sent+0x10f/0x140 [ 28.405304] ? ccid3_update_send_interval+0x100/0x100 [ 28.410469] dccp_xmit_packet+0x24b/0x6d0 [ 28.414596] dccp_write_xmit+0x140/0x1a0 [ 28.418632] dccp_sendmsg+0x6f6/0x890 [ 28.422409] ? dccp_ioctl+0x150/0x150 [ 28.426184] ? copy_msghdr_from_user+0x218/0x3b0 [ 28.430914] ? kernel_recvmsg+0x210/0x210 [ 28.435052] inet_sendmsg+0x11a/0x4e0 [ 28.438835] ? security_socket_sendmsg+0x83/0xb0 [ 28.443564] ? inet_recvmsg+0x4d0/0x4d0 [ 28.447520] sock_sendmsg+0xb5/0x100 [ 28.451222] ___sys_sendmsg+0x326/0x800 [ 28.455172] ? copy_msghdr_from_user+0x3b0/0x3b0 [ 28.459903] ? __release_sock+0x227/0x350 [ 28.464026] ? dccp_sendmsg+0x4eb/0x890 [ 28.467978] ? lock_downgrade+0x740/0x740 [ 28.472106] ? __local_bh_enable_ip+0xc1/0x170 [ 28.476673] ? trace_hardirqs_on_caller+0x3a8/0x580 [ 28.481664] ? dccp_sendmsg+0x4eb/0x890 [ 28.485615] ? __local_bh_enable_ip+0xc1/0x170 [ 28.490185] ? dccp_sendmsg+0x4fa/0x890 [ 28.494155] ? trace_hardirqs_on+0x10/0x10 [ 28.498377] ? dccp_ioctl+0x150/0x150 [ 28.502155] ? __fdget+0x167/0x1f0 [ 28.505673] ? sockfd_lookup_light+0xb2/0x160 [ 28.510144] __sys_sendmmsg+0x129/0x330 [ 28.514092] ? SyS_sendmsg+0x40/0x40 [ 28.517780] ? SyS_sendto+0x1e7/0x2c0 [ 28.521558] ? SyS_accept+0x30/0x30 [ 28.525163] ? up_read+0x17/0x30 [ 28.528505] SyS_sendmmsg+0x2f/0x50 [ 28.532103] ? __sys_sendmmsg+0x330/0x330 [ 28.536229] do_syscall_64+0x1d5/0x640 [ 28.540093] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 28.545275] RIP: 0033:0x7f0d6280eef9 [ 28.548961] RSP: 002b:00007ffc984a0bf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 executing program [ 28.556642] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f0d6280eef9 [ 28.563888] RDX: 0000000000000001 RSI: 0000000020000fc0 RDI: 0000000000000004 [ 28.571141] RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffc984a0d98 [ 28.578409] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc984a0c0c [ 28.585661] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 28.611986] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:101/ccid3_update_send_interval() [ 28.622625] CPU: 1 PID: 7960 Comm: syz-executor909 Not tainted 4.14.265-syzkaller #0 [ 28.630479] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 28.639822] Call Trace: [ 28.642388] dump_stack+0x1b2/0x281 [ 28.646000] ccid3_update_send_interval.cold+0x87/0x93 [ 28.651255] ccid3_hc_tx_packet_sent+0x10f/0x140 [ 28.655992] ? ccid3_update_send_interval+0x100/0x100 [ 28.661154] dccp_xmit_packet+0x24b/0x6d0 [ 28.665278] dccp_write_xmit+0x140/0x1a0 [ 28.669314] dccp_sendmsg+0x6f6/0x890 [ 28.673091] ? dccp_ioctl+0x150/0x150 [ 28.676864] ? copy_msghdr_from_user+0x218/0x3b0 [ 28.681593] ? kernel_recvmsg+0x210/0x210 [ 28.685724] inet_sendmsg+0x11a/0x4e0 [ 28.689517] ? security_socket_sendmsg+0x83/0xb0 [ 28.694245] ? inet_recvmsg+0x4d0/0x4d0 [ 28.698196] sock_sendmsg+0xb5/0x100 [ 28.701885] ___sys_sendmsg+0x326/0x800 [ 28.705832] ? copy_msghdr_from_user+0x3b0/0x3b0 [ 28.710559] ? __release_sock+0x227/0x350 [ 28.714679] ? dccp_sendmsg+0x4eb/0x890 [ 28.718630] ? lock_downgrade+0x740/0x740 [ 28.722758] ? __local_bh_enable_ip+0xc1/0x170 [ 28.727313] ? trace_hardirqs_on_caller+0x3a8/0x580 [ 28.732314] ? dccp_sendmsg+0x4eb/0x890 [ 28.736263] ? __local_bh_enable_ip+0xc1/0x170 [ 28.740815] ? dccp_sendmsg+0x4fa/0x890 [ 28.744759] ? trace_hardirqs_on+0x10/0x10 [ 28.748974] ? dccp_ioctl+0x150/0x150 [ 28.752750] ? __fdget+0x167/0x1f0 [ 28.756265] ? sockfd_lookup_light+0xb2/0x160 [ 28.760732] __sys_sendmmsg+0x129/0x330 [ 28.764683] ? SyS_sendmsg+0x40/0x40 [ 28.768373] ? SyS_sendto+0x1e7/0x2c0 [ 28.772150] ? SyS_accept+0x30/0x30 [ 28.775757] ? up_read+0x17/0x30 [ 28.779098] SyS_sendmmsg+0x2f/0x50 [ 28.782700] ? __sys_sendmmsg+0x330/0x330 [ 28.786823] do_syscall_64+0x1d5/0x640 [ 28.790687] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 28.795855] RIP: 0033:0x7f0d6280eef9 [ 28.799543] RSP: 002b:00007ffc984a0bf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 executing program [ 28.807222] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f0d6280eef9 [ 28.814466] RDX: 0000000000000001 RSI: 0000000020000fc0 RDI: 0000000000000004 [ 28.821709] RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffc984a0d98 [ 28.828954] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc984a0c0c [ 28.836198] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 28.862865] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:101/ccid3_update_send_interval() [ 28.873415] CPU: 1 PID: 7961 Comm: syz-executor909 Not tainted 4.14.265-syzkaller #0 [ 28.881274] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 28.890617] Call Trace: [ 28.893185] dump_stack+0x1b2/0x281 [ 28.896787] ccid3_update_send_interval.cold+0x87/0x93 [ 28.902036] ccid3_hc_tx_packet_sent+0x10f/0x140 [ 28.906766] ? ccid3_update_send_interval+0x100/0x100 [ 28.911928] dccp_xmit_packet+0x24b/0x6d0 [ 28.916060] dccp_write_xmit+0x140/0x1a0 [ 28.920093] dccp_sendmsg+0x6f6/0x890 [ 28.923870] ? dccp_ioctl+0x150/0x150 [ 28.927645] ? copy_msghdr_from_user+0x218/0x3b0 [ 28.932369] ? kernel_recvmsg+0x210/0x210 [ 28.936493] inet_sendmsg+0x11a/0x4e0 [ 28.940268] ? security_socket_sendmsg+0x83/0xb0 [ 28.944998] ? inet_recvmsg+0x4d0/0x4d0 [ 28.948942] sock_sendmsg+0xb5/0x100 [ 28.952630] ___sys_sendmsg+0x326/0x800 [ 28.956581] ? copy_msghdr_from_user+0x3b0/0x3b0 [ 28.961325] ? __release_sock+0x227/0x350 [ 28.965450] ? dccp_sendmsg+0x4eb/0x890 [ 28.969403] ? lock_downgrade+0x740/0x740 [ 28.973528] ? __local_bh_enable_ip+0xc1/0x170 [ 28.978088] ? trace_hardirqs_on_caller+0x3a8/0x580 [ 28.983093] ? dccp_sendmsg+0x4eb/0x890 [ 28.987045] ? __local_bh_enable_ip+0xc1/0x170 [ 28.991601] ? dccp_sendmsg+0x4fa/0x890 [ 28.995547] ? trace_hardirqs_on+0x10/0x10 [ 28.999844] ? dccp_ioctl+0x150/0x150 [ 29.003633] ? __fdget+0x167/0x1f0 [ 29.007148] ? sockfd_lookup_light+0xb2/0x160 [ 29.011649] __sys_sendmmsg+0x129/0x330 [ 29.015601] ? SyS_sendmsg+0x40/0x40 [ 29.019306] ? SyS_sendto+0x1e7/0x2c0 [ 29.023084] ? SyS_accept+0x30/0x30 [ 29.026690] ? up_read+0x17/0x30 [ 29.030030] SyS_sendmmsg+0x2f/0x50 [ 29.033628] ? __sys_sendmmsg+0x330/0x330 [ 29.037748] do_syscall_64+0x1d5/0x640 [ 29.041609] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 29.046772] RIP: 0033:0x7f0d6280eef9 [ 29.050458] RSP: 002b:00007ffc984a0bf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 executing program [ 29.058138] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f0d6280eef9 [ 29.065384] RDX: 0000000000000001 RSI: 0000000020000fc0 RDI: 0000000000000004 [ 29.072632] RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffc984a0d98 [ 29.079881] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc984a0c0c [ 29.087125] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 29.119663] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:101/ccid3_update_send_interval() [ 29.130290] CPU: 1 PID: 7964 Comm: syz-executor909 Not tainted 4.14.265-syzkaller #0 [ 29.138150] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 29.147480] Call Trace: [ 29.150043] dump_stack+0x1b2/0x281 [ 29.153654] ccid3_update_send_interval.cold+0x87/0x93 [ 29.158915] ccid3_hc_tx_packet_sent+0x10f/0x140 [ 29.163666] ? ccid3_update_send_interval+0x100/0x100 [ 29.168841] dccp_xmit_packet+0x24b/0x6d0 [ 29.172966] dccp_write_xmit+0x140/0x1a0 [ 29.177023] dccp_sendmsg+0x6f6/0x890 [ 29.180805] ? dccp_ioctl+0x150/0x150 [ 29.184578] ? copy_msghdr_from_user+0x218/0x3b0 [ 29.189307] ? kernel_recvmsg+0x210/0x210 [ 29.193443] inet_sendmsg+0x11a/0x4e0 [ 29.197222] ? security_socket_sendmsg+0x83/0xb0 [ 29.201953] ? inet_recvmsg+0x4d0/0x4d0 [ 29.205899] sock_sendmsg+0xb5/0x100 [ 29.209668] ___sys_sendmsg+0x326/0x800 [ 29.213623] ? copy_msghdr_from_user+0x3b0/0x3b0 [ 29.218360] ? __release_sock+0x227/0x350 [ 29.222491] ? dccp_sendmsg+0x4eb/0x890 [ 29.226455] ? lock_downgrade+0x740/0x740 [ 29.230576] ? __local_bh_enable_ip+0xc1/0x170 [ 29.235136] ? trace_hardirqs_on_caller+0x3a8/0x580 [ 29.240129] ? dccp_sendmsg+0x4eb/0x890 [ 29.244079] ? __local_bh_enable_ip+0xc1/0x170 [ 29.248642] ? dccp_sendmsg+0x4fa/0x890 [ 29.252601] ? trace_hardirqs_on+0x10/0x10 [ 29.256811] ? dccp_ioctl+0x150/0x150 [ 29.260585] ? __fdget+0x167/0x1f0 [ 29.264116] ? sockfd_lookup_light+0xb2/0x160 [ 29.268609] __sys_sendmmsg+0x129/0x330 [ 29.272569] ? SyS_sendmsg+0x40/0x40 [ 29.276286] ? SyS_sendto+0x1e7/0x2c0 [ 29.280069] ? SyS_accept+0x30/0x30 [ 29.283685] ? up_read+0x17/0x30 [ 29.287035] SyS_sendmmsg+0x2f/0x50 [ 29.290636] ? __sys_sendmmsg+0x330/0x330 [ 29.294759] do_syscall_64+0x1d5/0x640 [ 29.298623] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 29.303788] RIP: 0033:0x7f0d6280eef9 [ 29.307471] RSP: 002b:00007ffc984a0bf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 executing program [ 29.315150] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f0d6280eef9 [ 29.322392] RDX: 0000000000000001 RSI: 0000000020000fc0 RDI: 0000000000000004 [ 29.329632] RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffc984a0d98 [ 29.336875] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc984a0c0c [ 29.344116] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 29.370854] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:101/ccid3_update_send_interval() [ 29.381396] CPU: 1 PID: 7965 Comm: syz-executor909 Not tainted 4.14.265-syzkaller #0 [ 29.389257] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 29.398585] Call Trace: [ 29.401149] dump_stack+0x1b2/0x281 [ 29.404754] ccid3_update_send_interval.cold+0x87/0x93 [ 29.410016] ccid3_hc_tx_packet_sent+0x10f/0x140 [ 29.414750] ? ccid3_update_send_interval+0x100/0x100 [ 29.419926] dccp_xmit_packet+0x24b/0x6d0 [ 29.424054] dccp_write_xmit+0x140/0x1a0 [ 29.428189] dccp_sendmsg+0x6f6/0x890 [ 29.431966] ? dccp_ioctl+0x150/0x150 [ 29.435744] ? copy_msghdr_from_user+0x218/0x3b0 [ 29.440474] ? kernel_recvmsg+0x210/0x210 [ 29.444596] inet_sendmsg+0x11a/0x4e0 [ 29.448375] ? security_socket_sendmsg+0x83/0xb0 [ 29.453107] ? inet_recvmsg+0x4d0/0x4d0 [ 29.457055] sock_sendmsg+0xb5/0x100 [ 29.460746] ___sys_sendmsg+0x326/0x800 [ 29.464700] ? copy_msghdr_from_user+0x3b0/0x3b0 [ 29.469430] ? __release_sock+0x227/0x350 [ 29.473555] ? dccp_sendmsg+0x4eb/0x890 [ 29.477507] ? lock_downgrade+0x740/0x740 [ 29.481629] ? __local_bh_enable_ip+0xc1/0x170 [ 29.486185] ? trace_hardirqs_on_caller+0x3a8/0x580 [ 29.491175] ? dccp_sendmsg+0x4eb/0x890 [ 29.495131] ? __local_bh_enable_ip+0xc1/0x170 [ 29.499684] ? dccp_sendmsg+0x4fa/0x890 [ 29.503636] ? trace_hardirqs_on+0x10/0x10 [ 29.507845] ? dccp_ioctl+0x150/0x150 [ 29.511619] ? __fdget+0x167/0x1f0 [ 29.515138] ? sockfd_lookup_light+0xb2/0x160 [ 29.519605] __sys_sendmmsg+0x129/0x330 [ 29.523555] ? SyS_sendmsg+0x40/0x40 [ 29.527242] ? SyS_sendto+0x1e7/0x2c0 [ 29.531022] ? SyS_accept+0x30/0x30 [ 29.534707] ? up_read+0x17/0x30 [ 29.538077] SyS_sendmmsg+0x2f/0x50 [ 29.541692] ? __sys_sendmmsg+0x330/0x330 [ 29.545823] do_syscall_64+0x1d5/0x640 [ 29.549695] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 29.554864] RIP: 0033:0x7f0d6280eef9 [ 29.558550] RSP: 002b:00007ffc984a0bf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 executing program [ 29.566238] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f0d6280eef9 [ 29.573489] RDX: 0000000000000001 RSI: 0000000020000fc0 RDI: 0000000000000004 [ 29.580732] RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffc984a0d98 [ 29.587978] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc984a0c0c [ 29.595229] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 29.622123] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:101/ccid3_update_send_interval() [ 29.632658] CPU: 1 PID: 7966 Comm: syz-executor909 Not tainted 4.14.265-syzkaller #0 [ 29.640530] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 29.649860] Call Trace: [ 29.652438] dump_stack+0x1b2/0x281 [ 29.656046] ccid3_update_send_interval.cold+0x87/0x93 [ 29.661305] ccid3_hc_tx_packet_sent+0x10f/0x140 [ 29.666035] ? ccid3_update_send_interval+0x100/0x100 [ 29.671200] dccp_xmit_packet+0x24b/0x6d0 [ 29.675323] dccp_write_xmit+0x140/0x1a0 [ 29.679363] dccp_sendmsg+0x6f6/0x890 [ 29.683141] ? dccp_ioctl+0x150/0x150 [ 29.686918] ? copy_msghdr_from_user+0x218/0x3b0 [ 29.691646] ? kernel_recvmsg+0x210/0x210 [ 29.695772] inet_sendmsg+0x11a/0x4e0 [ 29.699547] ? security_socket_sendmsg+0x83/0xb0 [ 29.704275] ? inet_recvmsg+0x4d0/0x4d0 [ 29.708223] sock_sendmsg+0xb5/0x100 [ 29.711910] ___sys_sendmsg+0x326/0x800 [ 29.715859] ? copy_msghdr_from_user+0x3b0/0x3b0 [ 29.720589] ? __release_sock+0x227/0x350 [ 29.725453] ? dccp_sendmsg+0x4eb/0x890 [ 29.729403] ? lock_downgrade+0x740/0x740 [ 29.733527] ? __local_bh_enable_ip+0xc1/0x170 [ 29.738094] ? trace_hardirqs_on_caller+0x3a8/0x580 [ 29.743084] ? dccp_sendmsg+0x4eb/0x890 [ 29.747033] ? __local_bh_enable_ip+0xc1/0x170 [ 29.751601] ? dccp_sendmsg+0x4fa/0x890 [ 29.755552] ? trace_hardirqs_on+0x10/0x10 [ 29.759762] ? dccp_ioctl+0x150/0x150 [ 29.763552] ? __fdget+0x167/0x1f0 [ 29.767072] ? sockfd_lookup_light+0xb2/0x160 [ 29.771547] __sys_sendmmsg+0x129/0x330 [ 29.775499] ? SyS_sendmsg+0x40/0x40 [ 29.779184] ? SyS_sendto+0x1e7/0x2c0 [ 29.782961] ? SyS_accept+0x30/0x30 [ 29.786566] ? up_read+0x17/0x30 [ 29.789913] SyS_sendmmsg+0x2f/0x50 [ 29.793514] ? __sys_sendmmsg+0x330/0x330 [ 29.797649] do_syscall_64+0x1d5/0x640 [ 29.801516] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 29.806679] RIP: 0033:0x7f0d6280eef9 [ 29.810367] RSP: 002b:00007ffc984a0bf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 executing program executing program [ 29.818051] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f0d6280eef9 [ 29.825310] RDX: 0000000000000001 RSI: 0000000020000fc0 RDI: 0000000000000004 [ 29.832563] RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffc984a0d98 [ 29.839810] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc984a0c0c [ 29.847061] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 29.884965] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:101/ccid3_update_send_interval() [ 29.895954] CPU: 0 PID: 7968 Comm: syz-executor909 Not tainted 4.14.265-syzkaller #0 [ 29.903814] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 29.913142] Call Trace: [ 29.915709] dump_stack+0x1b2/0x281 [ 29.919313] ccid3_update_send_interval.cold+0x87/0x93 [ 29.924566] ccid3_hc_tx_packet_sent+0x10f/0x140 [ 29.929295] ? ccid3_update_send_interval+0x100/0x100 [ 29.934458] dccp_xmit_packet+0x24b/0x6d0 [ 29.938582] dccp_write_xmit+0x140/0x1a0 [ 29.942648] dccp_sendmsg+0x6f6/0x890 [ 29.946427] ? dccp_ioctl+0x150/0x150 [ 29.950202] ? copy_msghdr_from_user+0x218/0x3b0 [ 29.954932] ? kernel_recvmsg+0x210/0x210 [ 29.959057] inet_sendmsg+0x11a/0x4e0 [ 29.962835] ? security_socket_sendmsg+0x83/0xb0 [ 29.967584] ? inet_recvmsg+0x4d0/0x4d0 [ 29.971529] sock_sendmsg+0xb5/0x100 [ 29.975225] ___sys_sendmsg+0x326/0x800 [ 29.979171] ? copy_msghdr_from_user+0x3b0/0x3b0 [ 29.983899] ? __release_sock+0x227/0x350 [ 29.988030] ? dccp_sendmsg+0x4eb/0x890 [ 29.991986] ? lock_downgrade+0x740/0x740 [ 29.996126] ? __local_bh_enable_ip+0xc1/0x170 [ 30.000694] ? trace_hardirqs_on_caller+0x3a8/0x580 [ 30.005702] ? dccp_sendmsg+0x4eb/0x890 [ 30.009653] ? __local_bh_enable_ip+0xc1/0x170 [ 30.014220] ? dccp_sendmsg+0x4fa/0x890 [ 30.018167] ? trace_hardirqs_on+0x10/0x10 [ 30.022376] ? dccp_ioctl+0x150/0x150 [ 30.026159] ? __fdget+0x167/0x1f0 [ 30.029683] ? sockfd_lookup_light+0xb2/0x160 [ 30.034164] __sys_sendmmsg+0x129/0x330 [ 30.038128] ? SyS_sendmsg+0x40/0x40 [ 30.041823] ? SyS_sendto+0x1e7/0x2c0 [ 30.045614] ? SyS_accept+0x30/0x30 [ 30.049223] ? up_read+0x17/0x30 [ 30.052564] SyS_sendmmsg+0x2f/0x50 [ 30.056165] ? __sys_sendmmsg+0x330/0x330 [ 30.060288] do_syscall_64+0x1d5/0x640 [ 30.064153] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 30.069313] RIP: 0033:0x7f0d6280eef9 [ 30.072999] RSP: 002b:00007ffc984a0bf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 executing program executing program [ 30.080682] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f0d6280eef9 [ 30.087924] RDX: 0000000000000001 RSI: 0000000020000fc0 RDI: 0000000000000004 [ 30.095168] RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffc984a0d98 [ 30.102411] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc984a0c0c [ 30.109655] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 30.145330] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:101/ccid3_update_send_interval() [ 30.156369] CPU: 0 PID: 7970 Comm: syz-executor909 Not tainted 4.14.265-syzkaller #0 [ 30.164227] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 30.173556] Call Trace: [ 30.176120] dump_stack+0x1b2/0x281 [ 30.179724] ccid3_update_send_interval.cold+0x87/0x93 [ 30.184976] ccid3_hc_tx_packet_sent+0x10f/0x140 [ 30.189714] ? ccid3_update_send_interval+0x100/0x100 [ 30.194879] dccp_xmit_packet+0x24b/0x6d0 [ 30.199003] dccp_write_xmit+0x140/0x1a0 [ 30.203039] dccp_sendmsg+0x6f6/0x890 [ 30.206816] ? dccp_ioctl+0x150/0x150 [ 30.210590] ? copy_msghdr_from_user+0x218/0x3b0 [ 30.215316] ? kernel_recvmsg+0x210/0x210 [ 30.219437] inet_sendmsg+0x11a/0x4e0 [ 30.223218] ? security_socket_sendmsg+0x83/0xb0 [ 30.227950] ? inet_recvmsg+0x4d0/0x4d0 [ 30.231898] sock_sendmsg+0xb5/0x100 [ 30.235589] ___sys_sendmsg+0x326/0x800 [ 30.239545] ? copy_msghdr_from_user+0x3b0/0x3b0 [ 30.244278] ? __release_sock+0x227/0x350 [ 30.248401] ? dccp_sendmsg+0x4eb/0x890 [ 30.252364] ? lock_downgrade+0x740/0x740 [ 30.256488] ? __local_bh_enable_ip+0xc1/0x170 [ 30.261045] ? trace_hardirqs_on_caller+0x3a8/0x580 [ 30.266035] ? dccp_sendmsg+0x4eb/0x890 [ 30.269991] ? __local_bh_enable_ip+0xc1/0x170 [ 30.274552] ? dccp_sendmsg+0x4fa/0x890 [ 30.278514] ? trace_hardirqs_on+0x10/0x10 [ 30.282724] ? dccp_ioctl+0x150/0x150 [ 30.286503] ? __fdget+0x167/0x1f0 [ 30.290019] ? sockfd_lookup_light+0xb2/0x160 [ 30.294492] __sys_sendmmsg+0x129/0x330 [ 30.298439] ? SyS_sendmsg+0x40/0x40 [ 30.302134] ? SyS_sendto+0x1e7/0x2c0 [ 30.305917] ? SyS_accept+0x30/0x30 [ 30.309519] ? up_read+0x17/0x30 [ 30.312870] SyS_sendmmsg+0x2f/0x50 [ 30.316472] ? __sys_sendmmsg+0x330/0x330 [ 30.320597] do_syscall_64+0x1d5/0x640 [ 30.324467] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 30.329630] RIP: 0033:0x7f0d6280eef9 [ 30.333319] RSP: 002b:00007ffc984a0bf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 executing program [ 30.341017] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f0d6280eef9 [ 30.348260] RDX: 0000000000000001 RSI: 0000000020000fc0 RDI: 0000000000000004 [ 30.355521] RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffc984a0d98 [ 30.362780] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc984a0c0c [ 30.370025] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 30.396400] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:101/ccid3_update_send_interval() [ 30.406943] CPU: 1 PID: 7971 Comm: syz-executor909 Not tainted 4.14.265-syzkaller #0 [ 30.414814] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 30.424144] Call Trace: [ 30.426713] dump_stack+0x1b2/0x281 [ 30.430322] ccid3_update_send_interval.cold+0x87/0x93 [ 30.435596] ccid3_hc_tx_packet_sent+0x10f/0x140 [ 30.440328] ? ccid3_update_send_interval+0x100/0x100 [ 30.445493] dccp_xmit_packet+0x24b/0x6d0 [ 30.449618] dccp_write_xmit+0x140/0x1a0 [ 30.453657] dccp_sendmsg+0x6f6/0x890 [ 30.457434] ? dccp_ioctl+0x150/0x150 [ 30.461228] ? copy_msghdr_from_user+0x218/0x3b0 [ 30.465960] ? kernel_recvmsg+0x210/0x210 [ 30.470085] inet_sendmsg+0x11a/0x4e0 [ 30.473867] ? security_socket_sendmsg+0x83/0xb0 [ 30.478598] ? inet_recvmsg+0x4d0/0x4d0 [ 30.482544] sock_sendmsg+0xb5/0x100 [ 30.486231] ___sys_sendmsg+0x326/0x800 [ 30.490198] ? copy_msghdr_from_user+0x3b0/0x3b0 [ 30.494943] ? __release_sock+0x227/0x350 [ 30.499069] ? dccp_sendmsg+0x4eb/0x890 [ 30.503026] ? lock_downgrade+0x740/0x740 [ 30.507149] ? __local_bh_enable_ip+0xc1/0x170 [ 30.511707] ? trace_hardirqs_on_caller+0x3a8/0x580 [ 30.516700] ? dccp_sendmsg+0x4eb/0x890 [ 30.520653] ? __local_bh_enable_ip+0xc1/0x170 [ 30.525208] ? dccp_sendmsg+0x4fa/0x890 [ 30.529157] ? trace_hardirqs_on+0x10/0x10 [ 30.533367] ? dccp_ioctl+0x150/0x150 [ 30.537145] ? __fdget+0x167/0x1f0 [ 30.540668] ? sockfd_lookup_light+0xb2/0x160 [ 30.545141] __sys_sendmmsg+0x129/0x330 [ 30.549103] ? SyS_sendmsg+0x40/0x40 [ 30.552793] ? SyS_sendto+0x1e7/0x2c0 [ 30.556575] ? SyS_accept+0x30/0x30 [ 30.560183] ? up_read+0x17/0x30 [ 30.563528] SyS_sendmmsg+0x2f/0x50 [ 30.567132] ? __sys_sendmmsg+0x330/0x330 [ 30.571262] do_syscall_64+0x1d5/0x640 [ 30.575129] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 30.580346] RIP: 0033:0x7f0d6280eef9 [ 30.584064] RSP: 002b:00007ffc984a0bf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 executing program [ 30.591759] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f0d6280eef9 [ 30.599153] RDX: 0000000000000001 RSI: 0000000020000fc0 RDI: 0000000000000004 [ 30.606406] RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffc984a0d98 [ 30.613655] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc984a0c0c [ 30.620902] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 30.647481] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:101/ccid3_update_send_interval() [ 30.658011] CPU: 1 PID: 7972 Comm: syz-executor909 Not tainted 4.14.265-syzkaller #0 [ 30.665873] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 30.675204] Call Trace: [ 30.677771] dump_stack+0x1b2/0x281 [ 30.681379] ccid3_update_send_interval.cold+0x87/0x93 [ 30.686635] ccid3_hc_tx_packet_sent+0x10f/0x140 [ 30.691368] ? ccid3_update_send_interval+0x100/0x100 [ 30.696546] dccp_xmit_packet+0x24b/0x6d0 [ 30.700680] dccp_write_xmit+0x140/0x1a0 [ 30.704719] dccp_sendmsg+0x6f6/0x890 [ 30.708518] ? dccp_ioctl+0x150/0x150 [ 30.712295] ? copy_msghdr_from_user+0x218/0x3b0 [ 30.717024] ? kernel_recvmsg+0x210/0x210 [ 30.721154] inet_sendmsg+0x11a/0x4e0 [ 30.724931] ? security_socket_sendmsg+0x83/0xb0 [ 30.729688] ? inet_recvmsg+0x4d0/0x4d0 [ 30.733638] sock_sendmsg+0xb5/0x100 [ 30.737357] ___sys_sendmsg+0x326/0x800 [ 30.741313] ? copy_msghdr_from_user+0x3b0/0x3b0 [ 30.746045] ? __release_sock+0x227/0x350 [ 30.750167] ? dccp_sendmsg+0x4eb/0x890 [ 30.754122] ? lock_downgrade+0x740/0x740 [ 30.758248] ? __local_bh_enable_ip+0xc1/0x170 [ 30.762814] ? trace_hardirqs_on_caller+0x3a8/0x580 [ 30.767804] ? dccp_sendmsg+0x4eb/0x890 [ 30.771756] ? __local_bh_enable_ip+0xc1/0x170 [ 30.776314] ? dccp_sendmsg+0x4fa/0x890 [ 30.780270] ? trace_hardirqs_on+0x10/0x10 [ 30.784514] ? dccp_ioctl+0x150/0x150 [ 30.788297] ? __fdget+0x167/0x1f0 [ 30.791814] ? sockfd_lookup_light+0xb2/0x160 [ 30.796286] __sys_sendmmsg+0x129/0x330 [ 30.800239] ? SyS_sendmsg+0x40/0x40 [ 30.803929] ? SyS_sendto+0x1e7/0x2c0 [ 30.807708] ? SyS_accept+0x30/0x30 [ 30.811315] ? up_read+0x17/0x30 [ 30.814661] SyS_sendmmsg+0x2f/0x50 [ 30.818263] ? __sys_sendmmsg+0x330/0x330 [ 30.822391] do_syscall_64+0x1d5/0x640 [ 30.826292] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 30.831458] RIP: 0033:0x7f0d6280eef9 [ 30.835142] RSP: 002b:00007ffc984a0bf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 executing program [ 30.842826] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f0d6280eef9 [ 30.850070] RDX: 0000000000000001 RSI: 0000000020000fc0 RDI: 0000000000000004 [ 30.857340] RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffc984a0d98 [ 30.864587] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc984a0c0c [ 30.871833] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 30.898424] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:101/ccid3_update_send_interval() [ 30.908960] CPU: 1 PID: 7973 Comm: syz-executor909 Not tainted 4.14.265-syzkaller #0 [ 30.916828] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 30.926156] Call Trace: [ 30.928725] dump_stack+0x1b2/0x281 [ 30.932338] ccid3_update_send_interval.cold+0x87/0x93 [ 30.937593] ccid3_hc_tx_packet_sent+0x10f/0x140 [ 30.942332] ? ccid3_update_send_interval+0x100/0x100 [ 30.947500] dccp_xmit_packet+0x24b/0x6d0 [ 30.951628] dccp_write_xmit+0x140/0x1a0 [ 30.955686] dccp_sendmsg+0x6f6/0x890 [ 30.959465] ? dccp_ioctl+0x150/0x150 [ 30.963242] ? copy_msghdr_from_user+0x218/0x3b0 [ 30.967974] ? kernel_recvmsg+0x210/0x210 [ 30.972099] inet_sendmsg+0x11a/0x4e0 [ 30.975875] ? security_socket_sendmsg+0x83/0xb0 [ 30.980604] ? inet_recvmsg+0x4d0/0x4d0 [ 30.984555] sock_sendmsg+0xb5/0x100 [ 30.988246] ___sys_sendmsg+0x326/0x800 [ 30.992195] ? copy_msghdr_from_user+0x3b0/0x3b0 [ 30.996929] ? __release_sock+0x227/0x350 [ 31.001053] ? dccp_sendmsg+0x4eb/0x890 [ 31.005010] ? lock_downgrade+0x740/0x740 [ 31.009133] ? __local_bh_enable_ip+0xc1/0x170 [ 31.013688] ? trace_hardirqs_on_caller+0x3a8/0x580 [ 31.018680] ? dccp_sendmsg+0x4eb/0x890 [ 31.022626] ? __local_bh_enable_ip+0xc1/0x170 [ 31.027183] ? dccp_sendmsg+0x4fa/0x890 [ 31.031134] ? trace_hardirqs_on+0x10/0x10 [ 31.035347] ? dccp_ioctl+0x150/0x150 [ 31.039123] ? __fdget+0x167/0x1f0 [ 31.042650] ? sockfd_lookup_light+0xb2/0x160 [ 31.047120] __sys_sendmmsg+0x129/0x330 [ 31.051070] ? SyS_sendmsg+0x40/0x40 [ 31.054758] ? SyS_sendto+0x1e7/0x2c0 [ 31.058542] ? SyS_accept+0x30/0x30 [ 31.062146] ? up_read+0x17/0x30 [ 31.065487] SyS_sendmmsg+0x2f/0x50 [ 31.069089] ? __sys_sendmmsg+0x330/0x330 [ 31.073213] do_syscall_64+0x1d5/0x640 [ 31.077097] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 31.082262] RIP: 0033:0x7f0d6280eef9 [ 31.085945] RSP: 002b:00007ffc984a0bf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 executing program [ 31.093628] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f0d6280eef9 [ 31.100875] RDX: 0000000000000001 RSI: 0000000020000fc0 RDI: 0000000000000004 [ 31.108119] RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffc984a0d98 [ 31.115366] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc984a0c0c [ 31.122610] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 31.149763] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:101/ccid3_update_send_interval() [ 31.160283] CPU: 1 PID: 7974 Comm: syz-executor909 Not tainted 4.14.265-syzkaller #0 [ 31.168138] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 31.177468] Call Trace: [ 31.180035] dump_stack+0x1b2/0x281 [ 31.183640] ccid3_update_send_interval.cold+0x87/0x93 [ 31.188895] ccid3_hc_tx_packet_sent+0x10f/0x140 [ 31.193635] ? ccid3_update_send_interval+0x100/0x100 [ 31.198802] dccp_xmit_packet+0x24b/0x6d0 [ 31.202924] dccp_write_xmit+0x140/0x1a0 [ 31.206959] dccp_sendmsg+0x6f6/0x890 [ 31.210736] ? dccp_ioctl+0x150/0x150 [ 31.214512] ? copy_msghdr_from_user+0x218/0x3b0 [ 31.219240] ? kernel_recvmsg+0x210/0x210 [ 31.223364] inet_sendmsg+0x11a/0x4e0 [ 31.227143] ? security_socket_sendmsg+0x83/0xb0 [ 31.231910] ? inet_recvmsg+0x4d0/0x4d0 [ 31.235857] sock_sendmsg+0xb5/0x100 [ 31.239548] ___sys_sendmsg+0x326/0x800 [ 31.243495] ? copy_msghdr_from_user+0x3b0/0x3b0 [ 31.248225] ? __release_sock+0x227/0x350 [ 31.252367] ? dccp_sendmsg+0x4eb/0x890 [ 31.256325] ? lock_downgrade+0x740/0x740 [ 31.260450] ? __local_bh_enable_ip+0xc1/0x170 [ 31.265006] ? trace_hardirqs_on_caller+0x3a8/0x580 [ 31.269999] ? dccp_sendmsg+0x4eb/0x890 [ 31.273951] ? __local_bh_enable_ip+0xc1/0x170 [ 31.278510] ? dccp_sendmsg+0x4fa/0x890 [ 31.282461] ? trace_hardirqs_on+0x10/0x10 [ 31.286674] ? dccp_ioctl+0x150/0x150 [ 31.290453] ? __fdget+0x167/0x1f0 [ 31.293969] ? sockfd_lookup_light+0xb2/0x160 [ 31.298453] __sys_sendmmsg+0x129/0x330 [ 31.302407] ? SyS_sendmsg+0x40/0x40 [ 31.306103] ? SyS_sendto+0x1e7/0x2c0 [ 31.309882] ? SyS_accept+0x30/0x30 [ 31.313491] ? up_read+0x17/0x30 [ 31.316832] SyS_sendmmsg+0x2f/0x50 [ 31.320432] ? __sys_sendmmsg+0x330/0x330 [ 31.324558] do_syscall_64+0x1d5/0x640 [ 31.328422] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 31.333588] RIP: 0033:0x7f0d6280eef9 [ 31.337273] RSP: 002b:00007ffc984a0bf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 executing program [ 31.344956] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f0d6280eef9 [ 31.352228] RDX: 0000000000000001 RSI: 0000000020000fc0 RDI: 0000000000000004 [ 31.359480] RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffc984a0d98 [ 31.366726] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc984a0c0c [ 31.373976] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 31.401144] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:101/ccid3_update_send_interval() [ 31.411923] CPU: 0 PID: 7975 Comm: syz-executor909 Not tainted 4.14.265-syzkaller #0 [ 31.419793] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 31.429125] Call Trace: [ 31.431695] dump_stack+0x1b2/0x281 [ 31.435303] ccid3_update_send_interval.cold+0x87/0x93 [ 31.440556] ccid3_hc_tx_packet_sent+0x10f/0x140 [ 31.445293] ? ccid3_update_send_interval+0x100/0x100 [ 31.450461] dccp_xmit_packet+0x24b/0x6d0 [ 31.454633] dccp_write_xmit+0x140/0x1a0 [ 31.458674] dccp_sendmsg+0x6f6/0x890 [ 31.462473] ? dccp_ioctl+0x150/0x150 [ 31.466257] ? copy_msghdr_from_user+0x218/0x3b0 [ 31.471000] ? kernel_recvmsg+0x210/0x210 [ 31.475126] inet_sendmsg+0x11a/0x4e0 [ 31.478904] ? security_socket_sendmsg+0x83/0xb0 [ 31.483637] ? inet_recvmsg+0x4d0/0x4d0 [ 31.487587] sock_sendmsg+0xb5/0x100 [ 31.491286] ___sys_sendmsg+0x326/0x800 [ 31.495238] ? copy_msghdr_from_user+0x3b0/0x3b0 [ 31.499968] ? __release_sock+0x227/0x350 [ 31.504095] ? dccp_sendmsg+0x4eb/0x890 [ 31.508049] ? lock_downgrade+0x740/0x740 [ 31.512174] ? __local_bh_enable_ip+0xc1/0x170 [ 31.516733] ? trace_hardirqs_on_caller+0x3a8/0x580 [ 31.521726] ? dccp_sendmsg+0x4eb/0x890 [ 31.525675] ? __local_bh_enable_ip+0xc1/0x170 [ 31.530240] ? dccp_sendmsg+0x4fa/0x890 [ 31.534192] ? trace_hardirqs_on+0x10/0x10 [ 31.538418] ? dccp_ioctl+0x150/0x150 [ 31.542207] ? __fdget+0x167/0x1f0 [ 31.545720] ? sockfd_lookup_light+0xb2/0x160 [ 31.550191] __sys_sendmmsg+0x129/0x330 [ 31.554144] ? SyS_sendmsg+0x40/0x40 [ 31.557833] ? SyS_sendto+0x1e7/0x2c0 [ 31.561648] ? SyS_accept+0x30/0x30 [ 31.565253] ? up_read+0x17/0x30 [ 31.568593] SyS_sendmmsg+0x2f/0x50 [ 31.572195] ? __sys_sendmmsg+0x330/0x330 [ 31.576319] do_syscall_64+0x1d5/0x640 [ 31.580193] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 31.585381] RIP: 0033:0x7f0d6280eef9 [ 31.589096] RSP: 002b:00007ffc984a0bf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 executing program [ 31.596783] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f0d6280eef9 [ 31.604029] RDX: 0000000000000001 RSI: 0000000020000fc0 RDI: 0000000000000004 [ 31.611275] RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffc984a0d98 [ 31.618520] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc984a0c0c [ 31.625765] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 31.652072] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:101/ccid3_update_send_interval() [ 31.662713] CPU: 1 PID: 7976 Comm: syz-executor909 Not tainted 4.14.265-syzkaller #0 [ 31.670570] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 31.679898] Call Trace: [ 31.682465] dump_stack+0x1b2/0x281 [ 31.686071] ccid3_update_send_interval.cold+0x87/0x93 [ 31.691326] ccid3_hc_tx_packet_sent+0x10f/0x140 [ 31.696062] ? ccid3_update_send_interval+0x100/0x100 [ 31.701234] dccp_xmit_packet+0x24b/0x6d0 [ 31.705376] dccp_write_xmit+0x140/0x1a0 [ 31.709532] dccp_sendmsg+0x6f6/0x890 [ 31.713315] ? dccp_ioctl+0x150/0x150 [ 31.717096] ? copy_msghdr_from_user+0x218/0x3b0 [ 31.721829] ? kernel_recvmsg+0x210/0x210 [ 31.725957] inet_sendmsg+0x11a/0x4e0 [ 31.729738] ? security_socket_sendmsg+0x83/0xb0 [ 31.734481] ? inet_recvmsg+0x4d0/0x4d0 [ 31.738432] sock_sendmsg+0xb5/0x100 [ 31.742127] ___sys_sendmsg+0x326/0x800 [ 31.746077] ? copy_msghdr_from_user+0x3b0/0x3b0 [ 31.750807] ? __release_sock+0x227/0x350 [ 31.754937] ? dccp_sendmsg+0x4eb/0x890 [ 31.758899] ? lock_downgrade+0x740/0x740 [ 31.763056] ? __local_bh_enable_ip+0xc1/0x170 [ 31.767618] ? trace_hardirqs_on_caller+0x3a8/0x580 [ 31.772606] ? dccp_sendmsg+0x4eb/0x890 [ 31.776556] ? __local_bh_enable_ip+0xc1/0x170 [ 31.781128] ? dccp_sendmsg+0x4fa/0x890 [ 31.785087] ? trace_hardirqs_on+0x10/0x10 [ 31.789298] ? dccp_ioctl+0x150/0x150 [ 31.793082] ? __fdget+0x167/0x1f0 [ 31.796597] ? sockfd_lookup_light+0xb2/0x160 [ 31.801068] __sys_sendmmsg+0x129/0x330 [ 31.805027] ? SyS_sendmsg+0x40/0x40 [ 31.808723] ? SyS_sendto+0x1e7/0x2c0 [ 31.812504] ? SyS_accept+0x30/0x30 [ 31.816111] ? up_read+0x17/0x30 [ 31.819453] SyS_sendmmsg+0x2f/0x50 [ 31.823052] ? __sys_sendmmsg+0x330/0x330 [ 31.827178] do_syscall_64+0x1d5/0x640 [ 31.831050] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 31.836231] RIP: 0033:0x7f0d6280eef9 [ 31.839922] RSP: 002b:00007ffc984a0bf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 executing program [ 31.847616] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f0d6280eef9 [ 31.854871] RDX: 0000000000000001 RSI: 0000000020000fc0 RDI: 0000000000000004 [ 31.862121] RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffc984a0d98 [ 31.869373] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc984a0c0c [ 31.876621] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 31.903445] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:101/ccid3_update_send_interval() [ 31.914010] CPU: 1 PID: 7977 Comm: syz-executor909 Not tainted 4.14.265-syzkaller #0 [ 31.921884] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 31.931216] Call Trace: [ 31.933785] dump_stack+0x1b2/0x281 [ 31.937393] ccid3_update_send_interval.cold+0x87/0x93 [ 31.942649] ccid3_hc_tx_packet_sent+0x10f/0x140 [ 31.947390] ? ccid3_update_send_interval+0x100/0x100 [ 31.952564] dccp_xmit_packet+0x24b/0x6d0 [ 31.956687] dccp_write_xmit+0x140/0x1a0 [ 31.960722] dccp_sendmsg+0x6f6/0x890 [ 31.964499] ? dccp_ioctl+0x150/0x150 [ 31.968277] ? copy_msghdr_from_user+0x218/0x3b0 [ 31.973015] ? kernel_recvmsg+0x210/0x210 [ 31.977138] inet_sendmsg+0x11a/0x4e0 [ 31.980914] ? security_socket_sendmsg+0x83/0xb0 [ 31.985644] ? inet_recvmsg+0x4d0/0x4d0 [ 31.989611] sock_sendmsg+0xb5/0x100 [ 31.993299] ___sys_sendmsg+0x326/0x800 [ 31.997250] ? copy_msghdr_from_user+0x3b0/0x3b0 [ 32.001982] ? __release_sock+0x227/0x350 [ 32.006104] ? dccp_sendmsg+0x4eb/0x890 [ 32.010057] ? lock_downgrade+0x740/0x740 [ 32.014178] ? __local_bh_enable_ip+0xc1/0x170 [ 32.018736] ? trace_hardirqs_on_caller+0x3a8/0x580 [ 32.023726] ? dccp_sendmsg+0x4eb/0x890 [ 32.027680] ? __local_bh_enable_ip+0xc1/0x170 [ 32.032252] ? dccp_sendmsg+0x4fa/0x890 [ 32.036201] ? trace_hardirqs_on+0x10/0x10 [ 32.040435] ? dccp_ioctl+0x150/0x150 [ 32.044210] ? __fdget+0x167/0x1f0 [ 32.047726] ? sockfd_lookup_light+0xb2/0x160 [ 32.052209] __sys_sendmmsg+0x129/0x330 [ 32.056192] ? SyS_sendmsg+0x40/0x40 [ 32.059888] ? SyS_sendto+0x1e7/0x2c0 [ 32.063671] ? SyS_accept+0x30/0x30 [ 32.067276] ? up_read+0x17/0x30 [ 32.070620] SyS_sendmmsg+0x2f/0x50 [ 32.074222] ? __sys_sendmmsg+0x330/0x330 [ 32.078374] do_syscall_64+0x1d5/0x640 [ 32.082250] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 32.087434] RIP: 0033:0x7f0d6280eef9 [ 32.091123] RSP: 002b:00007ffc984a0bf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 executing program [ 32.098809] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f0d6280eef9 [ 32.106054] RDX: 0000000000000001 RSI: 0000000020000fc0 RDI: 0000000000000004 [ 32.113300] RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffc984a0d98 [ 32.120546] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc984a0c0c [ 32.127790] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 32.154983] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:101/ccid3_update_send_interval() [ 32.165545] CPU: 1 PID: 7978 Comm: syz-executor909 Not tainted 4.14.265-syzkaller #0 [ 32.173403] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 32.182764] Call Trace: [ 32.185331] dump_stack+0x1b2/0x281 [ 32.188936] ccid3_update_send_interval.cold+0x87/0x93 [ 32.194189] ccid3_hc_tx_packet_sent+0x10f/0x140 [ 32.198920] ? ccid3_update_send_interval+0x100/0x100 [ 32.204083] dccp_xmit_packet+0x24b/0x6d0 [ 32.208207] dccp_write_xmit+0x140/0x1a0 [ 32.212246] dccp_sendmsg+0x6f6/0x890 [ 32.216060] ? dccp_ioctl+0x150/0x150 [ 32.219839] ? copy_msghdr_from_user+0x218/0x3b0 [ 32.224569] ? kernel_recvmsg+0x210/0x210 [ 32.228694] inet_sendmsg+0x11a/0x4e0 [ 32.232471] ? security_socket_sendmsg+0x83/0xb0 [ 32.237207] ? inet_recvmsg+0x4d0/0x4d0 [ 32.241159] sock_sendmsg+0xb5/0x100 [ 32.244853] ___sys_sendmsg+0x326/0x800 [ 32.248806] ? copy_msghdr_from_user+0x3b0/0x3b0 [ 32.253541] ? __release_sock+0x227/0x350 [ 32.257667] ? dccp_sendmsg+0x4eb/0x890 [ 32.261622] ? lock_downgrade+0x740/0x740 [ 32.265765] ? __local_bh_enable_ip+0xc1/0x170 [ 32.270337] ? trace_hardirqs_on_caller+0x3a8/0x580 [ 32.275339] ? dccp_sendmsg+0x4eb/0x890 [ 32.279305] ? __local_bh_enable_ip+0xc1/0x170 [ 32.283888] ? dccp_sendmsg+0x4fa/0x890 [ 32.287844] ? trace_hardirqs_on+0x10/0x10 [ 32.292081] ? dccp_ioctl+0x150/0x150 [ 32.295904] ? __fdget+0x167/0x1f0 [ 32.299444] ? sockfd_lookup_light+0xb2/0x160 [ 32.303924] __sys_sendmmsg+0x129/0x330 [ 32.307878] ? SyS_sendmsg+0x40/0x40 [ 32.311570] ? SyS_sendto+0x1e7/0x2c0 [ 32.315354] ? SyS_accept+0x30/0x30 [ 32.318973] ? up_read+0x17/0x30 [ 32.322317] SyS_sendmmsg+0x2f/0x50 [ 32.325922] ? __sys_sendmmsg+0x330/0x330 [ 32.330085] do_syscall_64+0x1d5/0x640 [ 32.333952] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 32.339125] RIP: 0033:0x7f0d6280eef9 [ 32.342813] RSP: 002b:00007ffc984a0bf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 executing program executing program [ 32.350503] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f0d6280eef9 [ 32.357756] RDX: 0000000000000001 RSI: 0000000020000fc0 RDI: 0000000000000004 [ 32.365006] RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffc984a0d98 [ 32.372263] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc984a0c0c [ 32.379510] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 32.422754] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:101/ccid3_update_send_interval() [ 32.433306] CPU: 1 PID: 7982 Comm: syz-executor909 Not tainted 4.14.265-syzkaller #0 [ 32.441187] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 32.450532] Call Trace: [ 32.453097] dump_stack+0x1b2/0x281 [ 32.456712] ccid3_update_send_interval.cold+0x87/0x93 [ 32.461980] ccid3_hc_tx_packet_sent+0x10f/0x140 [ 32.466711] ? ccid3_update_send_interval+0x100/0x100 [ 32.471878] dccp_xmit_packet+0x24b/0x6d0 [ 32.476000] dccp_write_xmit+0x140/0x1a0 [ 32.480036] dccp_sendmsg+0x6f6/0x890 [ 32.483813] ? dccp_ioctl+0x150/0x150 [ 32.487602] ? copy_msghdr_from_user+0x218/0x3b0 [ 32.492342] ? kernel_recvmsg+0x210/0x210 [ 32.496491] inet_sendmsg+0x11a/0x4e0 [ 32.500277] ? security_socket_sendmsg+0x83/0xb0 [ 32.505015] ? inet_recvmsg+0x4d0/0x4d0 [ 32.508966] sock_sendmsg+0xb5/0x100 [ 32.512657] ___sys_sendmsg+0x326/0x800 [ 32.516609] ? copy_msghdr_from_user+0x3b0/0x3b0 [ 32.521343] ? __release_sock+0x227/0x350 [ 32.525468] ? dccp_sendmsg+0x4eb/0x890 [ 32.529438] ? lock_downgrade+0x740/0x740 [ 32.533562] ? __local_bh_enable_ip+0xc1/0x170 [ 32.538121] ? trace_hardirqs_on_caller+0x3a8/0x580 [ 32.543113] ? dccp_sendmsg+0x4eb/0x890 [ 32.547061] ? __local_bh_enable_ip+0xc1/0x170 [ 32.551633] ? dccp_sendmsg+0x4fa/0x890 [ 32.555585] ? trace_hardirqs_on+0x10/0x10 [ 32.559800] ? dccp_ioctl+0x150/0x150 [ 32.563576] ? __fdget+0x167/0x1f0 [ 32.567093] ? sockfd_lookup_light+0xb2/0x160 [ 32.571568] __sys_sendmmsg+0x129/0x330 [ 32.575538] ? SyS_sendmsg+0x40/0x40 [ 32.579229] ? SyS_sendto+0x1e7/0x2c0 [ 32.583026] ? SyS_accept+0x30/0x30 [ 32.586634] ? up_read+0x17/0x30 [ 32.589978] SyS_sendmmsg+0x2f/0x50 [ 32.593580] ? __sys_sendmmsg+0x330/0x330 [ 32.597718] do_syscall_64+0x1d5/0x640 [ 32.601585] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 32.606760] RIP: 0033:0x7f0d6280eef9 [ 32.610449] RSP: 002b:00007ffc984a0bf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 executing program [ 32.618133] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f0d6280eef9 [ 32.625383] RDX: 0000000000000001 RSI: 0000000020000fc0 RDI: 0000000000000004 [ 32.632635] RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffc984a0d98 [ 32.639884] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc984a0c0c [ 32.647132] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 32.673559] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:101/ccid3_update_send_interval() [ 32.684262] CPU: 0 PID: 7983 Comm: syz-executor909 Not tainted 4.14.265-syzkaller #0 [ 32.692121] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 32.701451] Call Trace: [ 32.704027] dump_stack+0x1b2/0x281 [ 32.707638] ccid3_update_send_interval.cold+0x87/0x93 [ 32.712895] ccid3_hc_tx_packet_sent+0x10f/0x140 [ 32.717631] ? ccid3_update_send_interval+0x100/0x100 [ 32.722801] dccp_xmit_packet+0x24b/0x6d0 [ 32.726927] dccp_write_xmit+0x140/0x1a0 [ 32.730967] dccp_sendmsg+0x6f6/0x890 [ 32.734762] ? dccp_ioctl+0x150/0x150 [ 32.738541] ? copy_msghdr_from_user+0x218/0x3b0 [ 32.743277] ? kernel_recvmsg+0x210/0x210 [ 32.747405] inet_sendmsg+0x11a/0x4e0 [ 32.751185] ? security_socket_sendmsg+0x83/0xb0 [ 32.755916] ? inet_recvmsg+0x4d0/0x4d0 [ 32.759868] sock_sendmsg+0xb5/0x100 [ 32.763564] ___sys_sendmsg+0x326/0x800 [ 32.767518] ? copy_msghdr_from_user+0x3b0/0x3b0 [ 32.772261] ? __release_sock+0x227/0x350 [ 32.776386] ? dccp_sendmsg+0x4eb/0x890 [ 32.780355] ? lock_downgrade+0x740/0x740 [ 32.784489] ? __local_bh_enable_ip+0xc1/0x170 [ 32.789066] ? trace_hardirqs_on_caller+0x3a8/0x580 [ 32.794060] ? dccp_sendmsg+0x4eb/0x890 [ 32.798009] ? __local_bh_enable_ip+0xc1/0x170 [ 32.802565] ? dccp_sendmsg+0x4fa/0x890 [ 32.806514] ? trace_hardirqs_on+0x10/0x10 [ 32.810740] ? dccp_ioctl+0x150/0x150 [ 32.814516] ? __fdget+0x167/0x1f0 [ 32.818051] ? sockfd_lookup_light+0xb2/0x160 [ 32.822524] __sys_sendmmsg+0x129/0x330 [ 32.826491] ? SyS_sendmsg+0x40/0x40 [ 32.830179] ? SyS_sendto+0x1e7/0x2c0 [ 32.833957] ? SyS_accept+0x30/0x30 [ 32.837564] ? up_read+0x17/0x30 [ 32.840914] SyS_sendmmsg+0x2f/0x50 [ 32.844518] ? __sys_sendmmsg+0x330/0x330 [ 32.848649] do_syscall_64+0x1d5/0x640 [ 32.852519] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 32.857688] RIP: 0033:0x7f0d6280eef9 [ 32.861383] RSP: 002b:00007ffc984a0bf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 executing program [ 32.869071] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f0d6280eef9 [ 32.876316] RDX: 0000000000000001 RSI: 0000000020000fc0 RDI: 0000000000000004 [ 32.883569] RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffc984a0d98 [ 32.890815] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc984a0c0c [ 32.898066] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 32.924777] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:101/ccid3_update_send_interval() [ 32.935344] CPU: 1 PID: 7984 Comm: syz-executor909 Not tainted 4.14.265-syzkaller #0 [ 32.943207] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 32.952538] Call Trace: [ 32.955139] dump_stack+0x1b2/0x281 [ 32.958785] ccid3_update_send_interval.cold+0x87/0x93 [ 32.964038] ccid3_hc_tx_packet_sent+0x10f/0x140 [ 32.968767] ? ccid3_update_send_interval+0x100/0x100 [ 32.973930] dccp_xmit_packet+0x24b/0x6d0 [ 32.978076] dccp_write_xmit+0x140/0x1a0 [ 32.982120] dccp_sendmsg+0x6f6/0x890 [ 32.985897] ? dccp_ioctl+0x150/0x150 [ 32.989713] ? copy_msghdr_from_user+0x218/0x3b0 [ 32.994482] ? kernel_recvmsg+0x210/0x210 [ 32.998611] inet_sendmsg+0x11a/0x4e0 [ 33.002391] ? security_socket_sendmsg+0x83/0xb0 [ 33.007120] ? inet_recvmsg+0x4d0/0x4d0 [ 33.011070] sock_sendmsg+0xb5/0x100 [ 33.014760] ___sys_sendmsg+0x326/0x800 [ 33.018715] ? copy_msghdr_from_user+0x3b0/0x3b0 [ 33.023485] ? __release_sock+0x227/0x350 [ 33.027611] ? dccp_sendmsg+0x4eb/0x890 [ 33.031566] ? lock_downgrade+0x740/0x740 [ 33.035713] ? __local_bh_enable_ip+0xc1/0x170 [ 33.040279] ? trace_hardirqs_on_caller+0x3a8/0x580 [ 33.045271] ? dccp_sendmsg+0x4eb/0x890 [ 33.049229] ? __local_bh_enable_ip+0xc1/0x170 [ 33.053785] ? dccp_sendmsg+0x4fa/0x890 [ 33.057741] ? trace_hardirqs_on+0x10/0x10 [ 33.061954] ? dccp_ioctl+0x150/0x150 [ 33.065744] ? __fdget+0x167/0x1f0 [ 33.069262] ? sockfd_lookup_light+0xb2/0x160 [ 33.073754] __sys_sendmmsg+0x129/0x330 [ 33.077704] ? SyS_sendmsg+0x40/0x40 [ 33.081390] ? SyS_sendto+0x1e7/0x2c0 [ 33.085170] ? SyS_accept+0x30/0x30 [ 33.088783] ? up_read+0x17/0x30 [ 33.092128] SyS_sendmmsg+0x2f/0x50 [ 33.095755] ? __sys_sendmmsg+0x330/0x330 [ 33.099904] do_syscall_64+0x1d5/0x640 [ 33.103772] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 33.108936] RIP: 0033:0x7f0d6280eef9 [ 33.112642] RSP: 002b:00007ffc984a0bf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 executing program [ 33.120323] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f0d6280eef9 [ 33.127575] RDX: 0000000000000001 RSI: 0000000020000fc0 RDI: 0000000000000004 [ 33.134847] RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffc984a0d98 [ 33.142093] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc984a0c0c [ 33.149347] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 33.176519] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:101/ccid3_update_send_interval() [ 33.187066] CPU: 1 PID: 7985 Comm: syz-executor909 Not tainted 4.14.265-syzkaller #0 [ 33.194938] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 33.204273] Call Trace: [ 33.206841] dump_stack+0x1b2/0x281 [ 33.210450] ccid3_update_send_interval.cold+0x87/0x93 [ 33.215704] ccid3_hc_tx_packet_sent+0x10f/0x140 [ 33.220434] ? ccid3_update_send_interval+0x100/0x100 [ 33.225600] dccp_xmit_packet+0x24b/0x6d0 [ 33.229731] dccp_write_xmit+0x140/0x1a0 [ 33.233768] dccp_sendmsg+0x6f6/0x890 [ 33.237575] ? dccp_ioctl+0x150/0x150 [ 33.241357] ? copy_msghdr_from_user+0x218/0x3b0 [ 33.246111] ? kernel_recvmsg+0x210/0x210 [ 33.250241] inet_sendmsg+0x11a/0x4e0 [ 33.254023] ? security_socket_sendmsg+0x83/0xb0 [ 33.258753] ? inet_recvmsg+0x4d0/0x4d0 [ 33.262703] sock_sendmsg+0xb5/0x100 [ 33.266394] ___sys_sendmsg+0x326/0x800 [ 33.270348] ? copy_msghdr_from_user+0x3b0/0x3b0 [ 33.275080] ? __release_sock+0x227/0x350 [ 33.279219] ? dccp_sendmsg+0x4eb/0x890 [ 33.283171] ? lock_downgrade+0x740/0x740 [ 33.287303] ? __local_bh_enable_ip+0xc1/0x170 [ 33.291865] ? trace_hardirqs_on_caller+0x3a8/0x580 [ 33.296854] ? dccp_sendmsg+0x4eb/0x890 [ 33.300827] ? __local_bh_enable_ip+0xc1/0x170 [ 33.305387] ? dccp_sendmsg+0x4fa/0x890 [ 33.309334] ? trace_hardirqs_on+0x10/0x10 [ 33.313565] ? dccp_ioctl+0x150/0x150 [ 33.317362] ? __fdget+0x167/0x1f0 [ 33.320875] ? sockfd_lookup_light+0xb2/0x160 [ 33.325353] __sys_sendmmsg+0x129/0x330 [ 33.329303] ? SyS_sendmsg+0x40/0x40 [ 33.332990] ? SyS_sendto+0x1e7/0x2c0 [ 33.336767] ? SyS_accept+0x30/0x30 [ 33.340375] ? up_read+0x17/0x30 [ 33.343725] SyS_sendmmsg+0x2f/0x50 [ 33.347332] ? __sys_sendmmsg+0x330/0x330 [ 33.351458] do_syscall_64+0x1d5/0x640 [ 33.355325] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 33.360495] RIP: 0033:0x7f0d6280eef9 [ 33.364214] RSP: 002b:00007ffc984a0bf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 executing program [ 33.371900] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f0d6280eef9 [ 33.379145] RDX: 0000000000000001 RSI: 0000000020000fc0 RDI: 0000000000000004 [ 33.386450] RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffc984a0d98 [ 33.393694] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc984a0c0c [ 33.400953] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 33.427677] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:101/ccid3_update_send_interval() [ 33.438261] CPU: 1 PID: 7986 Comm: syz-executor909 Not tainted 4.14.265-syzkaller #0 [ 33.446129] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 33.455463] Call Trace: [ 33.458036] dump_stack+0x1b2/0x281 [ 33.461650] ccid3_update_send_interval.cold+0x87/0x93 [ 33.466915] ccid3_hc_tx_packet_sent+0x10f/0x140 [ 33.471649] ? ccid3_update_send_interval+0x100/0x100 [ 33.476817] dccp_xmit_packet+0x24b/0x6d0 [ 33.480948] dccp_write_xmit+0x140/0x1a0 [ 33.484993] dccp_sendmsg+0x6f6/0x890 [ 33.488769] ? dccp_ioctl+0x150/0x150 [ 33.492582] ? copy_msghdr_from_user+0x218/0x3b0 [ 33.497315] ? kernel_recvmsg+0x210/0x210 [ 33.501443] inet_sendmsg+0x11a/0x4e0 [ 33.505221] ? security_socket_sendmsg+0x83/0xb0 [ 33.509952] ? inet_recvmsg+0x4d0/0x4d0 [ 33.513917] sock_sendmsg+0xb5/0x100 [ 33.517604] ___sys_sendmsg+0x326/0x800 [ 33.521578] ? copy_msghdr_from_user+0x3b0/0x3b0 [ 33.526336] ? __release_sock+0x227/0x350 [ 33.530476] ? dccp_sendmsg+0x4eb/0x890 [ 33.534430] ? lock_downgrade+0x740/0x740 [ 33.538570] ? __local_bh_enable_ip+0xc1/0x170 [ 33.543166] ? trace_hardirqs_on_caller+0x3a8/0x580 [ 33.548162] ? dccp_sendmsg+0x4eb/0x890 [ 33.552132] ? __local_bh_enable_ip+0xc1/0x170 [ 33.556718] ? dccp_sendmsg+0x4fa/0x890 [ 33.560671] ? trace_hardirqs_on+0x10/0x10 [ 33.564894] ? dccp_ioctl+0x150/0x150 [ 33.568677] ? __fdget+0x167/0x1f0 [ 33.572198] ? sockfd_lookup_light+0xb2/0x160 [ 33.576670] __sys_sendmmsg+0x129/0x330 [ 33.580644] ? SyS_sendmsg+0x40/0x40 [ 33.584350] ? SyS_sendto+0x1e7/0x2c0 [ 33.588140] ? SyS_accept+0x30/0x30 [ 33.591759] ? up_read+0x17/0x30 [ 33.595105] SyS_sendmmsg+0x2f/0x50 [ 33.598709] ? __sys_sendmmsg+0x330/0x330 [ 33.602835] do_syscall_64+0x1d5/0x640 [ 33.606702] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 33.611867] RIP: 0033:0x7f0d6280eef9 [ 33.615569] RSP: 002b:00007ffc984a0bf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 executing program [ 33.623289] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f0d6280eef9 [ 33.630638] RDX: 0000000000000001 RSI: 0000000020000fc0 RDI: 0000000000000004 [ 33.637888] RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffc984a0d98 [ 33.645136] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc984a0c0c [ 33.652429] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 33.679698] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:101/ccid3_update_send_interval() [ 33.690265] CPU: 1 PID: 7987 Comm: syz-executor909 Not tainted 4.14.265-syzkaller #0 [ 33.698148] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 33.707480] Call Trace: [ 33.710064] dump_stack+0x1b2/0x281 [ 33.713670] ccid3_update_send_interval.cold+0x87/0x93 [ 33.718924] ccid3_hc_tx_packet_sent+0x10f/0x140 [ 33.723656] ? ccid3_update_send_interval+0x100/0x100 [ 33.728820] dccp_xmit_packet+0x24b/0x6d0 [ 33.732945] dccp_write_xmit+0x140/0x1a0 [ 33.736982] dccp_sendmsg+0x6f6/0x890 [ 33.740762] ? dccp_ioctl+0x150/0x150 [ 33.744538] ? copy_msghdr_from_user+0x218/0x3b0 [ 33.749268] ? kernel_recvmsg+0x210/0x210 [ 33.753412] inet_sendmsg+0x11a/0x4e0 [ 33.757226] ? security_socket_sendmsg+0x83/0xb0 [ 33.761958] ? inet_recvmsg+0x4d0/0x4d0 [ 33.765916] sock_sendmsg+0xb5/0x100 [ 33.769630] ___sys_sendmsg+0x326/0x800 [ 33.773588] ? copy_msghdr_from_user+0x3b0/0x3b0 [ 33.778324] ? __release_sock+0x227/0x350 [ 33.782458] ? dccp_sendmsg+0x4eb/0x890 [ 33.786414] ? lock_downgrade+0x740/0x740 [ 33.790540] ? __local_bh_enable_ip+0xc1/0x170 [ 33.795097] ? trace_hardirqs_on_caller+0x3a8/0x580 [ 33.800087] ? dccp_sendmsg+0x4eb/0x890 [ 33.804036] ? __local_bh_enable_ip+0xc1/0x170 [ 33.808594] ? dccp_sendmsg+0x4fa/0x890 [ 33.812545] ? trace_hardirqs_on+0x10/0x10 [ 33.816773] ? dccp_ioctl+0x150/0x150 [ 33.820576] ? __fdget+0x167/0x1f0 [ 33.824093] ? sockfd_lookup_light+0xb2/0x160 [ 33.828566] __sys_sendmmsg+0x129/0x330 [ 33.832519] ? SyS_sendmsg+0x40/0x40 [ 33.836210] ? SyS_sendto+0x1e7/0x2c0 [ 33.839999] ? SyS_accept+0x30/0x30 [ 33.843635] ? up_read+0x17/0x30 [ 33.846977] SyS_sendmmsg+0x2f/0x50 [ 33.850579] ? __sys_sendmmsg+0x330/0x330 [ 33.854711] do_syscall_64+0x1d5/0x640 [ 33.858579] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 33.863745] RIP: 0033:0x7f0d6280eef9 [ 33.867433] RSP: 002b:00007ffc984a0bf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 executing program [ 33.875116] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f0d6280eef9 [ 33.882363] RDX: 0000000000000001 RSI: 0000000020000fc0 RDI: 0000000000000004 [ 33.889607] RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffc984a0d98 [ 33.896850] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc984a0c0c [ 33.904094] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 33.931422] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:101/ccid3_update_send_interval() [ 33.942143] CPU: 1 PID: 7988 Comm: syz-executor909 Not tainted 4.14.265-syzkaller #0 [ 33.950041] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 33.959392] Call Trace: [ 33.962000] dump_stack+0x1b2/0x281 [ 33.965609] ccid3_update_send_interval.cold+0x87/0x93 [ 33.970895] ccid3_hc_tx_packet_sent+0x10f/0x140 [ 33.975633] ? ccid3_update_send_interval+0x100/0x100 [ 33.980796] dccp_xmit_packet+0x24b/0x6d0 [ 33.984919] dccp_write_xmit+0x140/0x1a0 [ 33.988957] dccp_sendmsg+0x6f6/0x890 [ 33.992736] ? dccp_ioctl+0x150/0x150 [ 33.996531] ? copy_msghdr_from_user+0x218/0x3b0 [ 34.001263] ? kernel_recvmsg+0x210/0x210 [ 34.005403] inet_sendmsg+0x11a/0x4e0 [ 34.009182] ? security_socket_sendmsg+0x83/0xb0 [ 34.013911] ? inet_recvmsg+0x4d0/0x4d0 [ 34.017858] sock_sendmsg+0xb5/0x100 [ 34.021547] ___sys_sendmsg+0x326/0x800 [ 34.025496] ? copy_msghdr_from_user+0x3b0/0x3b0 [ 34.030233] ? __release_sock+0x227/0x350 [ 34.034361] ? dccp_sendmsg+0x4eb/0x890 [ 34.038315] ? lock_downgrade+0x740/0x740 [ 34.042445] ? __local_bh_enable_ip+0xc1/0x170 [ 34.047001] ? trace_hardirqs_on_caller+0x3a8/0x580 [ 34.052012] ? dccp_sendmsg+0x4eb/0x890 [ 34.055959] ? __local_bh_enable_ip+0xc1/0x170 [ 34.060524] ? dccp_sendmsg+0x4fa/0x890 [ 34.064488] ? trace_hardirqs_on+0x10/0x10 [ 34.068707] ? dccp_ioctl+0x150/0x150 [ 34.072494] ? __fdget+0x167/0x1f0 [ 34.076021] ? sockfd_lookup_light+0xb2/0x160 [ 34.080516] __sys_sendmmsg+0x129/0x330 [ 34.084466] ? SyS_sendmsg+0x40/0x40 [ 34.088196] ? SyS_sendto+0x1e7/0x2c0 [ 34.091982] ? SyS_accept+0x30/0x30 [ 34.095610] ? up_read+0x17/0x30 [ 34.098951] SyS_sendmmsg+0x2f/0x50 [ 34.102552] ? __sys_sendmmsg+0x330/0x330 [ 34.106675] do_syscall_64+0x1d5/0x640 [ 34.110586] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 34.115767] RIP: 0033:0x7f0d6280eef9 [ 34.119460] RSP: 002b:00007ffc984a0bf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 executing program [ 34.127158] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f0d6280eef9 [ 34.134419] RDX: 0000000000000001 RSI: 0000000020000fc0 RDI: 0000000000000004 [ 34.141665] RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffc984a0d98 [ 34.148911] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc984a0c0c [ 34.156162] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 34.182894] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:101/ccid3_update_send_interval() [ 34.193434] CPU: 1 PID: 7989 Comm: syz-executor909 Not tainted 4.14.265-syzkaller #0 [ 34.201296] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 34.210627] Call Trace: [ 34.213197] dump_stack+0x1b2/0x281 [ 34.216803] ccid3_update_send_interval.cold+0x87/0x93 [ 34.222058] ccid3_hc_tx_packet_sent+0x10f/0x140 [ 34.226792] ? ccid3_update_send_interval+0x100/0x100 [ 34.231958] dccp_xmit_packet+0x24b/0x6d0 [ 34.236082] dccp_write_xmit+0x140/0x1a0 [ 34.240118] dccp_sendmsg+0x6f6/0x890 [ 34.243899] ? dccp_ioctl+0x150/0x150 [ 34.247674] ? copy_msghdr_from_user+0x218/0x3b0 [ 34.252422] ? kernel_recvmsg+0x210/0x210 [ 34.256544] inet_sendmsg+0x11a/0x4e0 [ 34.260327] ? security_socket_sendmsg+0x83/0xb0 [ 34.265059] ? inet_recvmsg+0x4d0/0x4d0 [ 34.269009] sock_sendmsg+0xb5/0x100 [ 34.272712] ___sys_sendmsg+0x326/0x800 [ 34.276661] ? copy_msghdr_from_user+0x3b0/0x3b0 [ 34.281403] ? __release_sock+0x227/0x350 [ 34.285536] ? dccp_sendmsg+0x4eb/0x890 [ 34.289491] ? lock_downgrade+0x740/0x740 [ 34.293615] ? __local_bh_enable_ip+0xc1/0x170 [ 34.298191] ? trace_hardirqs_on_caller+0x3a8/0x580 [ 34.303226] ? dccp_sendmsg+0x4eb/0x890 [ 34.307177] ? __local_bh_enable_ip+0xc1/0x170 [ 34.311732] ? dccp_sendmsg+0x4fa/0x890 [ 34.315683] ? trace_hardirqs_on+0x10/0x10 [ 34.319915] ? dccp_ioctl+0x150/0x150 [ 34.323700] ? __fdget+0x167/0x1f0 [ 34.327217] ? sockfd_lookup_light+0xb2/0x160 [ 34.331719] __sys_sendmmsg+0x129/0x330 [ 34.335683] ? SyS_sendmsg+0x40/0x40 [ 34.339373] ? SyS_sendto+0x1e7/0x2c0 [ 34.343168] ? SyS_accept+0x30/0x30 [ 34.346780] ? up_read+0x17/0x30 [ 34.350136] SyS_sendmmsg+0x2f/0x50 [ 34.353775] ? __sys_sendmmsg+0x330/0x330 [ 34.357899] do_syscall_64+0x1d5/0x640 [ 34.361764] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 34.366932] RIP: 0033:0x7f0d6280eef9 [ 34.370625] RSP: 002b:00007ffc984a0bf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 executing program [ 34.378326] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f0d6280eef9 [ 34.385587] RDX: 0000000000000001 RSI: 0000000020000fc0 RDI: 0000000000000004 [ 34.392832] RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffc984a0d98 [ 34.400095] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc984a0c0c [ 34.407353] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 34.434856] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:101/ccid3_update_send_interval() [ 34.445417] CPU: 1 PID: 7990 Comm: syz-executor909 Not tainted 4.14.265-syzkaller #0 [ 34.453278] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 34.462614] Call Trace: [ 34.465194] dump_stack+0x1b2/0x281 [ 34.468809] ccid3_update_send_interval.cold+0x87/0x93 [ 34.474069] ccid3_hc_tx_packet_sent+0x10f/0x140 [ 34.478809] ? ccid3_update_send_interval+0x100/0x100 [ 34.483978] dccp_xmit_packet+0x24b/0x6d0 [ 34.488108] dccp_write_xmit+0x140/0x1a0 [ 34.492146] dccp_sendmsg+0x6f6/0x890 [ 34.495939] ? dccp_ioctl+0x150/0x150 [ 34.499721] ? copy_msghdr_from_user+0x218/0x3b0 [ 34.504453] ? kernel_recvmsg+0x210/0x210 [ 34.508579] inet_sendmsg+0x11a/0x4e0 [ 34.512360] ? security_socket_sendmsg+0x83/0xb0 [ 34.517097] ? inet_recvmsg+0x4d0/0x4d0 [ 34.521052] sock_sendmsg+0xb5/0x100 [ 34.524760] ___sys_sendmsg+0x326/0x800 [ 34.528709] ? copy_msghdr_from_user+0x3b0/0x3b0 [ 34.533439] ? __release_sock+0x227/0x350 [ 34.537584] ? dccp_sendmsg+0x4eb/0x890 [ 34.541546] ? lock_downgrade+0x740/0x740 [ 34.545678] ? __local_bh_enable_ip+0xc1/0x170 [ 34.550244] ? trace_hardirqs_on_caller+0x3a8/0x580 [ 34.555240] ? dccp_sendmsg+0x4eb/0x890 [ 34.559193] ? __local_bh_enable_ip+0xc1/0x170 [ 34.563754] ? dccp_sendmsg+0x4fa/0x890 [ 34.567705] ? trace_hardirqs_on+0x10/0x10 [ 34.571916] ? dccp_ioctl+0x150/0x150 [ 34.575693] ? __fdget+0x167/0x1f0 [ 34.579210] ? sockfd_lookup_light+0xb2/0x160 [ 34.583706] __sys_sendmmsg+0x129/0x330 [ 34.587670] ? SyS_sendmsg+0x40/0x40 [ 34.591516] ? SyS_sendto+0x1e7/0x2c0 [ 34.595300] ? SyS_accept+0x30/0x30 [ 34.598915] ? up_read+0x17/0x30 [ 34.602286] SyS_sendmmsg+0x2f/0x50 [ 34.605898] ? __sys_sendmmsg+0x330/0x330 [ 34.610025] do_syscall_64+0x1d5/0x640 [ 34.613891] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 34.619061] RIP: 0033:0x7f0d6280eef9 [ 34.622750] RSP: 002b:00007ffc984a0bf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 executing program [ 34.630438] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f0d6280eef9 [ 34.637691] RDX: 0000000000000001 RSI: 0000000020000fc0 RDI: 0000000000000004 [ 34.644937] RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffc984a0d98 [ 34.652182] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc984a0c0c [ 34.659433] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 34.686509] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:101/ccid3_update_send_interval() [ 34.697066] CPU: 1 PID: 7991 Comm: syz-executor909 Not tainted 4.14.265-syzkaller #0 [ 34.704928] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 34.714259] Call Trace: [ 34.716829] dump_stack+0x1b2/0x281 [ 34.720438] ccid3_update_send_interval.cold+0x87/0x93 [ 34.725717] ccid3_hc_tx_packet_sent+0x10f/0x140 [ 34.730450] ? ccid3_update_send_interval+0x100/0x100 [ 34.735626] dccp_xmit_packet+0x24b/0x6d0 [ 34.739758] dccp_write_xmit+0x140/0x1a0 [ 34.743797] dccp_sendmsg+0x6f6/0x890 [ 34.747631] ? dccp_ioctl+0x150/0x150 [ 34.751409] ? copy_msghdr_from_user+0x218/0x3b0 [ 34.756207] ? kernel_recvmsg+0x210/0x210 [ 34.760340] inet_sendmsg+0x11a/0x4e0 [ 34.764134] ? security_socket_sendmsg+0x83/0xb0 [ 34.768863] ? inet_recvmsg+0x4d0/0x4d0 [ 34.772812] sock_sendmsg+0xb5/0x100 [ 34.776502] ___sys_sendmsg+0x326/0x800 [ 34.780471] ? copy_msghdr_from_user+0x3b0/0x3b0 [ 34.785202] ? __release_sock+0x227/0x350 [ 34.789329] ? dccp_sendmsg+0x4eb/0x890 [ 34.793290] ? lock_downgrade+0x740/0x740 [ 34.797423] ? __local_bh_enable_ip+0xc1/0x170 [ 34.801989] ? trace_hardirqs_on_caller+0x3a8/0x580 [ 34.806984] ? dccp_sendmsg+0x4eb/0x890 [ 34.810937] ? __local_bh_enable_ip+0xc1/0x170 [ 34.815495] ? dccp_sendmsg+0x4fa/0x890 [ 34.819446] ? dccp_ioctl+0x150/0x150 [ 34.823223] ? __fdget+0x167/0x1f0 [ 34.826736] ? sockfd_lookup_light+0xb2/0x160 [ 34.831210] __sys_sendmmsg+0x129/0x330 [ 34.835162] ? SyS_sendmsg+0x40/0x40 [ 34.838850] ? SyS_sendto+0x1e7/0x2c0 [ 34.842632] ? __schedule+0x893/0x1de0 [ 34.846498] ? io_schedule_timeout+0x140/0x140 [ 34.851062] SyS_sendmmsg+0x2f/0x50 [ 34.854663] ? __sys_sendmmsg+0x330/0x330 [ 34.858804] do_syscall_64+0x1d5/0x640 [ 34.862669] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 34.867835] RIP: 0033:0x7f0d6280eef9 [ 34.871522] RSP: 002b:00007ffc984a0bf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 [ 34.879212] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f0d6280eef9 executing program [ 34.886466] RDX: 0000000000000001 RSI: 0000000020000fc0 RDI: 0000000000000004 [ 34.893714] RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffc984a0d98 [ 34.900963] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc984a0c0c [ 34.908216] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 34.934683] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:101/ccid3_update_send_interval() [ 34.945260] CPU: 1 PID: 7992 Comm: syz-executor909 Not tainted 4.14.265-syzkaller #0 [ 34.953122] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 34.962455] Call Trace: [ 34.965029] dump_stack+0x1b2/0x281 [ 34.968646] ccid3_update_send_interval.cold+0x87/0x93 [ 34.973911] ccid3_hc_tx_packet_sent+0x10f/0x140 [ 34.978644] ? ccid3_update_send_interval+0x100/0x100 [ 34.983810] dccp_xmit_packet+0x24b/0x6d0 [ 34.987932] dccp_write_xmit+0x140/0x1a0 [ 34.991967] dccp_sendmsg+0x6f6/0x890 [ 34.995759] ? dccp_ioctl+0x150/0x150 [ 34.999538] ? copy_msghdr_from_user+0x218/0x3b0 [ 35.004271] ? kernel_recvmsg+0x210/0x210 [ 35.008413] inet_sendmsg+0x11a/0x4e0 [ 35.012191] ? security_socket_sendmsg+0x83/0xb0 [ 35.016920] ? inet_recvmsg+0x4d0/0x4d0 [ 35.020876] sock_sendmsg+0xb5/0x100 [ 35.024563] ___sys_sendmsg+0x326/0x800 [ 35.028519] ? copy_msghdr_from_user+0x3b0/0x3b0 [ 35.033251] ? __release_sock+0x227/0x350 [ 35.037379] ? dccp_sendmsg+0x4eb/0x890 [ 35.041338] ? lock_downgrade+0x740/0x740 [ 35.045470] ? __local_bh_enable_ip+0xc1/0x170 [ 35.050037] ? trace_hardirqs_on_caller+0x3a8/0x580 [ 35.055041] ? dccp_sendmsg+0x4eb/0x890 [ 35.059013] ? __local_bh_enable_ip+0xc1/0x170 [ 35.063585] ? dccp_sendmsg+0x4fa/0x890 [ 35.067540] ? trace_hardirqs_on+0x10/0x10 [ 35.071760] ? dccp_ioctl+0x150/0x150 [ 35.075543] ? __fdget+0x167/0x1f0 [ 35.079068] ? sockfd_lookup_light+0xb2/0x160 [ 35.083538] __sys_sendmmsg+0x129/0x330 [ 35.087489] ? SyS_sendmsg+0x40/0x40 [ 35.091180] ? SyS_sendto+0x1e7/0x2c0 [ 35.094975] ? SyS_accept+0x30/0x30 [ 35.098586] ? up_read+0x17/0x30 [ 35.101932] SyS_sendmmsg+0x2f/0x50 [ 35.105534] ? __sys_sendmmsg+0x330/0x330 [ 35.109656] do_syscall_64+0x1d5/0x640 [ 35.113521] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 35.118689] RIP: 0033:0x7f0d6280eef9 [ 35.122374] RSP: 002b:00007ffc984a0bf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 [ 35.130059] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f0d6280eef9 executing program [ 35.137305] RDX: 0000000000000001 RSI: 0000000020000fc0 RDI: 0000000000000004 [ 35.144552] RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffc984a0d98 [ 35.151802] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc984a0c0c [ 35.159054] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 35.187162] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:101/ccid3_update_send_interval() [ 35.197715] CPU: 1 PID: 7993 Comm: syz-executor909 Not tainted 4.14.265-syzkaller #0 [ 35.205585] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 35.214915] Call Trace: [ 35.217491] dump_stack+0x1b2/0x281 [ 35.221111] ccid3_update_send_interval.cold+0x87/0x93 [ 35.226367] ccid3_hc_tx_packet_sent+0x10f/0x140 [ 35.231201] ? ccid3_update_send_interval+0x100/0x100 [ 35.236384] dccp_xmit_packet+0x24b/0x6d0 [ 35.240521] dccp_write_xmit+0x140/0x1a0 [ 35.244558] dccp_sendmsg+0x6f6/0x890 [ 35.248337] ? dccp_ioctl+0x150/0x150 [ 35.252116] ? copy_msghdr_from_user+0x218/0x3b0 [ 35.256856] ? kernel_recvmsg+0x210/0x210 [ 35.260992] inet_sendmsg+0x11a/0x4e0 [ 35.264787] ? security_socket_sendmsg+0x83/0xb0 [ 35.269516] ? inet_recvmsg+0x4d0/0x4d0 [ 35.273488] sock_sendmsg+0xb5/0x100 [ 35.277177] ___sys_sendmsg+0x326/0x800 [ 35.281129] ? copy_msghdr_from_user+0x3b0/0x3b0 [ 35.285865] ? __release_sock+0x227/0x350 [ 35.289994] ? dccp_sendmsg+0x4eb/0x890 [ 35.293947] ? lock_downgrade+0x740/0x740 [ 35.298086] ? __local_bh_enable_ip+0xc1/0x170 [ 35.302644] ? trace_hardirqs_on_caller+0x3a8/0x580 [ 35.307637] ? dccp_sendmsg+0x4eb/0x890 [ 35.311587] ? __local_bh_enable_ip+0xc1/0x170 [ 35.316160] ? dccp_sendmsg+0x4fa/0x890 [ 35.320137] ? trace_hardirqs_on+0x10/0x10 [ 35.324369] ? dccp_ioctl+0x150/0x150 [ 35.328168] ? __fdget+0x167/0x1f0 [ 35.331689] ? sockfd_lookup_light+0xb2/0x160 [ 35.336162] __sys_sendmmsg+0x129/0x330 [ 35.340113] ? SyS_sendmsg+0x40/0x40 [ 35.343809] ? SyS_sendto+0x1e7/0x2c0 [ 35.347589] ? SyS_accept+0x30/0x30 [ 35.351198] ? up_read+0x17/0x30 [ 35.354549] SyS_sendmmsg+0x2f/0x50 [ 35.358151] ? __sys_sendmmsg+0x330/0x330 [ 35.362274] do_syscall_64+0x1d5/0x640 [ 35.366152] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 35.371328] RIP: 0033:0x7f0d6280eef9 [ 35.375016] RSP: 002b:00007ffc984a0bf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 [ 35.382709] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f0d6280eef9 executing program [ 35.389955] RDX: 0000000000000001 RSI: 0000000020000fc0 RDI: 0000000000000004 [ 35.397198] RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffc984a0d98 [ 35.404441] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc984a0c0c [ 35.411709] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 35.438219] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:101/ccid3_update_send_interval() [ 35.448782] CPU: 1 PID: 7994 Comm: syz-executor909 Not tainted 4.14.265-syzkaller #0 [ 35.456647] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 35.465978] Call Trace: [ 35.468542] dump_stack+0x1b2/0x281 [ 35.472147] ccid3_update_send_interval.cold+0x87/0x93 [ 35.477400] ccid3_hc_tx_packet_sent+0x10f/0x140 [ 35.482132] ? ccid3_update_send_interval+0x100/0x100 [ 35.487294] dccp_xmit_packet+0x24b/0x6d0 [ 35.491431] dccp_write_xmit+0x140/0x1a0 [ 35.495467] dccp_sendmsg+0x6f6/0x890 [ 35.499247] ? dccp_ioctl+0x150/0x150 [ 35.503035] ? copy_msghdr_from_user+0x218/0x3b0 [ 35.507766] ? kernel_recvmsg+0x210/0x210 [ 35.511892] inet_sendmsg+0x11a/0x4e0 [ 35.515670] ? security_socket_sendmsg+0x83/0xb0 [ 35.520398] ? inet_recvmsg+0x4d0/0x4d0 [ 35.524345] sock_sendmsg+0xb5/0x100 [ 35.528037] ___sys_sendmsg+0x326/0x800 [ 35.531986] ? copy_msghdr_from_user+0x3b0/0x3b0 [ 35.536715] ? __release_sock+0x227/0x350 [ 35.540862] ? dccp_sendmsg+0x4eb/0x890 [ 35.544819] ? lock_downgrade+0x740/0x740 [ 35.548978] ? __local_bh_enable_ip+0xc1/0x170 [ 35.553567] ? trace_hardirqs_on_caller+0x3a8/0x580 [ 35.558568] ? dccp_sendmsg+0x4eb/0x890 [ 35.562521] ? __local_bh_enable_ip+0xc1/0x170 [ 35.567095] ? dccp_sendmsg+0x4fa/0x890 [ 35.571054] ? trace_hardirqs_on+0x10/0x10 [ 35.575275] ? dccp_ioctl+0x150/0x150 [ 35.579070] ? __fdget+0x167/0x1f0 [ 35.582597] ? sockfd_lookup_light+0xb2/0x160 [ 35.587082] __sys_sendmmsg+0x129/0x330 [ 35.591035] ? SyS_sendmsg+0x40/0x40 [ 35.594724] ? SyS_sendto+0x1e7/0x2c0 [ 35.598504] ? SyS_accept+0x30/0x30 [ 35.602112] ? up_read+0x17/0x30 [ 35.605457] SyS_sendmmsg+0x2f/0x50 [ 35.609084] ? __sys_sendmmsg+0x330/0x330 [ 35.613220] do_syscall_64+0x1d5/0x640 [ 35.617108] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 35.622280] RIP: 0033:0x7f0d6280eef9 [ 35.625982] RSP: 002b:00007ffc984a0bf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 [ 35.633680] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f0d6280eef9 executing program executing program executing program [ 35.640932] RDX: 0000000000000001 RSI: 0000000020000fc0 RDI: 0000000000000004 [ 35.648185] RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffc984a0d98 [ 35.655431] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc984a0c0c [ 35.662715] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 35.714401] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:101/ccid3_update_send_interval() [ 35.724959] CPU: 1 PID: 7999 Comm: syz-executor909 Not tainted 4.14.265-syzkaller #0 [ 35.732833] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 35.742171] Call Trace: [ 35.744738] dump_stack+0x1b2/0x281 [ 35.748350] ccid3_update_send_interval.cold+0x87/0x93 [ 35.753606] ccid3_hc_tx_packet_sent+0x10f/0x140 [ 35.758338] ? ccid3_update_send_interval+0x100/0x100 [ 35.763500] dccp_xmit_packet+0x24b/0x6d0 [ 35.767629] dccp_write_xmit+0x140/0x1a0 [ 35.771671] dccp_sendmsg+0x6f6/0x890 [ 35.775451] ? dccp_ioctl+0x150/0x150 [ 35.779229] ? copy_msghdr_from_user+0x218/0x3b0 [ 35.783964] ? kernel_recvmsg+0x210/0x210 [ 35.788089] inet_sendmsg+0x11a/0x4e0 [ 35.791883] ? security_socket_sendmsg+0x83/0xb0 [ 35.796633] ? inet_recvmsg+0x4d0/0x4d0 [ 35.800580] sock_sendmsg+0xb5/0x100 [ 35.804268] ___sys_sendmsg+0x326/0x800 [ 35.808218] ? copy_msghdr_from_user+0x3b0/0x3b0 [ 35.812948] ? __release_sock+0x227/0x350 [ 35.817073] ? dccp_sendmsg+0x4eb/0x890 [ 35.821025] ? lock_downgrade+0x740/0x740 [ 35.825148] ? __local_bh_enable_ip+0xc1/0x170 [ 35.829725] ? trace_hardirqs_on_caller+0x3a8/0x580 [ 35.834716] ? dccp_sendmsg+0x4eb/0x890 [ 35.838662] ? __local_bh_enable_ip+0xc1/0x170 [ 35.843220] ? dccp_sendmsg+0x4fa/0x890 [ 35.847185] ? trace_hardirqs_on+0x10/0x10 [ 35.851397] ? dccp_ioctl+0x150/0x150 [ 35.855176] ? __fdget+0x167/0x1f0 [ 35.858700] ? sockfd_lookup_light+0xb2/0x160 [ 35.863171] __sys_sendmmsg+0x129/0x330 [ 35.867142] ? SyS_sendmsg+0x40/0x40 [ 35.872055] ? SyS_sendto+0x1e7/0x2c0 [ 35.875835] ? SyS_accept+0x30/0x30 [ 35.879463] ? up_read+0x17/0x30 [ 35.882804] SyS_sendmmsg+0x2f/0x50 [ 35.886407] ? __sys_sendmmsg+0x330/0x330 [ 35.890533] do_syscall_64+0x1d5/0x640 [ 35.894432] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 35.899620] RIP: 0033:0x7f0d6280eef9 [ 35.903315] RSP: 002b:00007ffc984a0bf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 executing program [ 35.911007] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f0d6280eef9 [ 35.918250] RDX: 0000000000000001 RSI: 0000000020000fc0 RDI: 0000000000000004 [ 35.925499] RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffc984a0d98 [ 35.932753] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc984a0c0c [ 35.940000] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 35.966668] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:101/ccid3_update_send_interval() [ 35.977264] CPU: 1 PID: 8000 Comm: syz-executor909 Not tainted 4.14.265-syzkaller #0 [ 35.985128] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 35.994459] Call Trace: [ 35.997034] dump_stack+0x1b2/0x281 [ 36.000640] ccid3_update_send_interval.cold+0x87/0x93 [ 36.005897] ccid3_hc_tx_packet_sent+0x10f/0x140 [ 36.010636] ? ccid3_update_send_interval+0x100/0x100 [ 36.015816] dccp_xmit_packet+0x24b/0x6d0 [ 36.019964] dccp_write_xmit+0x140/0x1a0 [ 36.024005] dccp_sendmsg+0x6f6/0x890 [ 36.027803] ? dccp_ioctl+0x150/0x150 [ 36.031588] ? copy_msghdr_from_user+0x218/0x3b0 [ 36.036318] ? kernel_recvmsg+0x210/0x210 [ 36.040442] inet_sendmsg+0x11a/0x4e0 [ 36.044220] ? security_socket_sendmsg+0x83/0xb0 [ 36.048950] ? inet_recvmsg+0x4d0/0x4d0 [ 36.052903] sock_sendmsg+0xb5/0x100 [ 36.056595] ___sys_sendmsg+0x326/0x800 [ 36.060551] ? copy_msghdr_from_user+0x3b0/0x3b0 [ 36.065290] ? __release_sock+0x227/0x350 [ 36.069434] ? dccp_sendmsg+0x4eb/0x890 [ 36.073397] ? lock_downgrade+0x740/0x740 [ 36.077530] ? __local_bh_enable_ip+0xc1/0x170 [ 36.082087] ? trace_hardirqs_on_caller+0x3a8/0x580 [ 36.087095] ? dccp_sendmsg+0x4eb/0x890 [ 36.091044] ? __local_bh_enable_ip+0xc1/0x170 [ 36.095599] ? dccp_sendmsg+0x4fa/0x890 [ 36.099553] ? trace_hardirqs_on+0x10/0x10 [ 36.103763] ? dccp_ioctl+0x150/0x150 [ 36.107540] ? __fdget+0x167/0x1f0 [ 36.111056] ? sockfd_lookup_light+0xb2/0x160 [ 36.115534] __sys_sendmmsg+0x129/0x330 [ 36.119486] ? SyS_sendmsg+0x40/0x40 [ 36.123182] ? SyS_sendto+0x1e7/0x2c0 [ 36.126962] ? SyS_accept+0x30/0x30 [ 36.130568] ? up_read+0x17/0x30 [ 36.133910] SyS_sendmmsg+0x2f/0x50 [ 36.137517] ? __sys_sendmmsg+0x330/0x330 [ 36.141646] do_syscall_64+0x1d5/0x640 [ 36.145512] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 36.150678] RIP: 0033:0x7f0d6280eef9 [ 36.154363] RSP: 002b:00007ffc984a0bf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 executing program [ 36.162047] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f0d6280eef9 [ 36.169289] RDX: 0000000000000001 RSI: 0000000020000fc0 RDI: 0000000000000004 [ 36.176532] RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffc984a0d98 [ 36.183776] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc984a0c0c [ 36.191020] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 36.218391] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:101/ccid3_update_send_interval() [ 36.228947] CPU: 1 PID: 8001 Comm: syz-executor909 Not tainted 4.14.265-syzkaller #0 [ 36.236813] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 36.246145] Call Trace: [ 36.248711] dump_stack+0x1b2/0x281 [ 36.252318] ccid3_update_send_interval.cold+0x87/0x93 [ 36.257576] ccid3_hc_tx_packet_sent+0x10f/0x140 [ 36.262310] ? ccid3_update_send_interval+0x100/0x100 [ 36.267477] dccp_xmit_packet+0x24b/0x6d0 [ 36.271600] dccp_write_xmit+0x140/0x1a0 [ 36.275635] dccp_sendmsg+0x6f6/0x890 [ 36.279414] ? dccp_ioctl+0x150/0x150 [ 36.283192] ? copy_msghdr_from_user+0x218/0x3b0 [ 36.287921] ? kernel_recvmsg+0x210/0x210 [ 36.292046] inet_sendmsg+0x11a/0x4e0 [ 36.295829] ? security_socket_sendmsg+0x83/0xb0 [ 36.300583] ? inet_recvmsg+0x4d0/0x4d0 [ 36.304541] sock_sendmsg+0xb5/0x100 [ 36.308250] ___sys_sendmsg+0x326/0x800 [ 36.312204] ? copy_msghdr_from_user+0x3b0/0x3b0 [ 36.316954] ? __release_sock+0x227/0x350 [ 36.321078] ? dccp_sendmsg+0x4eb/0x890 [ 36.325033] ? lock_downgrade+0x740/0x740 [ 36.329158] ? __local_bh_enable_ip+0xc1/0x170 [ 36.333714] ? trace_hardirqs_on_caller+0x3a8/0x580 [ 36.338707] ? dccp_sendmsg+0x4eb/0x890 [ 36.342655] ? __local_bh_enable_ip+0xc1/0x170 [ 36.347210] ? dccp_sendmsg+0x4fa/0x890 [ 36.351156] ? trace_hardirqs_on+0x10/0x10 [ 36.355364] ? dccp_ioctl+0x150/0x150 [ 36.359142] ? __fdget+0x167/0x1f0 [ 36.362659] ? sockfd_lookup_light+0xb2/0x160 [ 36.367134] __sys_sendmmsg+0x129/0x330 [ 36.371086] ? SyS_sendmsg+0x40/0x40 [ 36.374778] ? SyS_sendto+0x1e7/0x2c0 [ 36.378576] ? SyS_accept+0x30/0x30 [ 36.382182] ? up_read+0x17/0x30 [ 36.385526] SyS_sendmmsg+0x2f/0x50 [ 36.389125] ? __sys_sendmmsg+0x330/0x330 [ 36.393246] do_syscall_64+0x1d5/0x640 [ 36.397111] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 36.402273] RIP: 0033:0x7f0d6280eef9 [ 36.405959] RSP: 002b:00007ffc984a0bf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 executing program [ 36.413648] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f0d6280eef9 [ 36.420893] RDX: 0000000000000001 RSI: 0000000020000fc0 RDI: 0000000000000004 [ 36.428138] RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffc984a0d98 [ 36.435381] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc984a0c0c [ 36.442624] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 36.468780] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:101/ccid3_update_send_interval() [ 36.479315] CPU: 1 PID: 8002 Comm: syz-executor909 Not tainted 4.14.265-syzkaller #0 [ 36.487173] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 36.496513] Call Trace: [ 36.499081] dump_stack+0x1b2/0x281 [ 36.502684] ccid3_update_send_interval.cold+0x87/0x93 [ 36.507941] ccid3_hc_tx_packet_sent+0x10f/0x140 [ 36.512676] ? ccid3_update_send_interval+0x100/0x100 [ 36.517859] dccp_xmit_packet+0x24b/0x6d0 [ 36.522003] dccp_write_xmit+0x140/0x1a0 [ 36.526045] dccp_sendmsg+0x6f6/0x890 [ 36.529821] ? dccp_ioctl+0x150/0x150 [ 36.533623] ? copy_msghdr_from_user+0x218/0x3b0 [ 36.538381] ? kernel_recvmsg+0x210/0x210 [ 36.542506] inet_sendmsg+0x11a/0x4e0 [ 36.546293] ? security_socket_sendmsg+0x83/0xb0 [ 36.551044] ? inet_recvmsg+0x4d0/0x4d0 [ 36.554993] sock_sendmsg+0xb5/0x100 [ 36.558681] ___sys_sendmsg+0x326/0x800 [ 36.562639] ? copy_msghdr_from_user+0x3b0/0x3b0 [ 36.567368] ? __release_sock+0x227/0x350 [ 36.571511] ? dccp_sendmsg+0x4eb/0x890 [ 36.575480] ? lock_downgrade+0x740/0x740 [ 36.579627] ? __local_bh_enable_ip+0xc1/0x170 [ 36.584191] ? trace_hardirqs_on_caller+0x3a8/0x580 [ 36.589186] ? dccp_sendmsg+0x4eb/0x890 [ 36.593177] ? __local_bh_enable_ip+0xc1/0x170 [ 36.597747] ? dccp_sendmsg+0x4fa/0x890 [ 36.601713] ? trace_hardirqs_on+0x10/0x10 [ 36.605927] ? dccp_ioctl+0x150/0x150 [ 36.609708] ? __fdget+0x167/0x1f0 [ 36.613227] ? sockfd_lookup_light+0xb2/0x160 [ 36.617704] __sys_sendmmsg+0x129/0x330 [ 36.621670] ? SyS_sendmsg+0x40/0x40 [ 36.625375] ? SyS_sendto+0x1e7/0x2c0 [ 36.629161] ? SyS_accept+0x30/0x30 [ 36.632770] ? up_read+0x17/0x30 [ 36.636122] SyS_sendmmsg+0x2f/0x50 [ 36.639729] ? __sys_sendmmsg+0x330/0x330 [ 36.643860] do_syscall_64+0x1d5/0x640 [ 36.647731] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 36.652908] RIP: 0033:0x7f0d6280eef9 [ 36.656597] RSP: 002b:00007ffc984a0bf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 executing program [ 36.664290] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f0d6280eef9 [ 36.671534] RDX: 0000000000000001 RSI: 0000000020000fc0 RDI: 0000000000000004 [ 36.678778] RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffc984a0d98 [ 36.686024] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc984a0c0c [ 36.693269] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 36.720087] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:101/ccid3_update_send_interval() [ 36.730650] CPU: 1 PID: 8003 Comm: syz-executor909 Not tainted 4.14.265-syzkaller #0 [ 36.738506] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 36.747838] Call Trace: [ 36.750405] dump_stack+0x1b2/0x281 [ 36.754013] ccid3_update_send_interval.cold+0x87/0x93 [ 36.759276] ccid3_hc_tx_packet_sent+0x10f/0x140 [ 36.764011] ? ccid3_update_send_interval+0x100/0x100 [ 36.769185] dccp_xmit_packet+0x24b/0x6d0 [ 36.773322] dccp_write_xmit+0x140/0x1a0 [ 36.777371] dccp_sendmsg+0x6f6/0x890 [ 36.781148] ? dccp_ioctl+0x150/0x150 [ 36.784931] ? copy_msghdr_from_user+0x218/0x3b0 [ 36.789668] ? kernel_recvmsg+0x210/0x210 [ 36.793799] inet_sendmsg+0x11a/0x4e0 [ 36.797579] ? security_socket_sendmsg+0x83/0xb0 [ 36.802327] ? inet_recvmsg+0x4d0/0x4d0 [ 36.806300] sock_sendmsg+0xb5/0x100 [ 36.809993] ___sys_sendmsg+0x326/0x800 [ 36.813966] ? copy_msghdr_from_user+0x3b0/0x3b0 [ 36.818699] ? __release_sock+0x227/0x350 [ 36.822846] ? dccp_sendmsg+0x4eb/0x890 [ 36.826802] ? lock_downgrade+0x740/0x740 [ 36.830939] ? __local_bh_enable_ip+0xc1/0x170 [ 36.835497] ? trace_hardirqs_on_caller+0x3a8/0x580 [ 36.840488] ? dccp_sendmsg+0x4eb/0x890 [ 36.844436] ? __local_bh_enable_ip+0xc1/0x170 [ 36.848991] ? dccp_sendmsg+0x4fa/0x890 [ 36.852942] ? trace_hardirqs_on_caller+0x3a8/0x580 [ 36.857947] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 36.862682] ? dccp_ioctl+0x150/0x150 [ 36.866457] ? __fdget+0x167/0x1f0 [ 36.869974] ? sockfd_lookup_light+0xb2/0x160 [ 36.874446] __sys_sendmmsg+0x129/0x330 [ 36.878408] ? SyS_sendmsg+0x40/0x40 [ 36.882132] ? SyS_sendto+0x1e7/0x2c0 [ 36.885921] ? SyS_accept+0x30/0x30 [ 36.889528] ? up_read+0x17/0x30 [ 36.892880] SyS_sendmmsg+0x2f/0x50 [ 36.896480] ? __sys_sendmmsg+0x330/0x330 [ 36.900604] do_syscall_64+0x1d5/0x640 [ 36.904477] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 36.909644] RIP: 0033:0x7f0d6280eef9 [ 36.913331] RSP: 002b:00007ffc984a0bf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 executing program [ 36.921026] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f0d6280eef9 [ 36.928269] RDX: 0000000000000001 RSI: 0000000020000fc0 RDI: 0000000000000004 [ 36.935512] RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffc984a0d98 [ 36.942756] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc984a0c0c [ 36.950001] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 36.977400] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:101/ccid3_update_send_interval() [ 36.987948] CPU: 1 PID: 8004 Comm: syz-executor909 Not tainted 4.14.265-syzkaller #0 [ 36.995811] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 37.005137] Call Trace: [ 37.007700] dump_stack+0x1b2/0x281 [ 37.011302] ccid3_update_send_interval.cold+0x87/0x93 [ 37.016555] ccid3_hc_tx_packet_sent+0x10f/0x140 [ 37.021284] ? ccid3_update_send_interval+0x100/0x100 [ 37.026470] dccp_xmit_packet+0x24b/0x6d0 [ 37.030594] dccp_write_xmit+0x140/0x1a0 [ 37.034650] dccp_sendmsg+0x6f6/0x890 [ 37.038435] ? dccp_ioctl+0x150/0x150 [ 37.042212] ? copy_msghdr_from_user+0x218/0x3b0 [ 37.046944] ? kernel_recvmsg+0x210/0x210 [ 37.051067] inet_sendmsg+0x11a/0x4e0 [ 37.054854] ? security_socket_sendmsg+0x83/0xb0 [ 37.059608] ? inet_recvmsg+0x4d0/0x4d0 [ 37.063574] sock_sendmsg+0xb5/0x100 [ 37.067267] ___sys_sendmsg+0x326/0x800 [ 37.071216] ? copy_msghdr_from_user+0x3b0/0x3b0 [ 37.075959] ? __release_sock+0x227/0x350 [ 37.080091] ? dccp_sendmsg+0x4eb/0x890 [ 37.084047] ? lock_downgrade+0x740/0x740 [ 37.088174] ? __local_bh_enable_ip+0xc1/0x170 [ 37.092735] ? trace_hardirqs_on_caller+0x3a8/0x580 [ 37.097723] ? dccp_sendmsg+0x4eb/0x890 [ 37.101674] ? __local_bh_enable_ip+0xc1/0x170 [ 37.106234] ? dccp_sendmsg+0x4fa/0x890 [ 37.110183] ? trace_hardirqs_on+0x10/0x10 [ 37.114393] ? dccp_ioctl+0x150/0x150 [ 37.118169] ? __fdget+0x167/0x1f0 [ 37.121701] ? sockfd_lookup_light+0xb2/0x160 [ 37.126172] __sys_sendmmsg+0x129/0x330 [ 37.130123] ? SyS_sendmsg+0x40/0x40 [ 37.133839] ? SyS_sendto+0x1e7/0x2c0 [ 37.137652] ? SyS_accept+0x30/0x30 [ 37.141256] ? up_read+0x17/0x30 [ 37.144622] SyS_sendmmsg+0x2f/0x50 [ 37.148222] ? __sys_sendmmsg+0x330/0x330 [ 37.152343] do_syscall_64+0x1d5/0x640 [ 37.156253] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 37.161429] RIP: 0033:0x7f0d6280eef9 [ 37.165116] RSP: 002b:00007ffc984a0bf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 executing program executing program [ 37.172799] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f0d6280eef9 [ 37.180042] RDX: 0000000000000001 RSI: 0000000020000fc0 RDI: 0000000000000004 [ 37.187288] RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffc984a0d98 [ 37.194556] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc984a0c0c [ 37.201804] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 37.240068] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:101/ccid3_update_send_interval() [ 37.251068] CPU: 0 PID: 8006 Comm: syz-executor909 Not tainted 4.14.265-syzkaller #0 [ 37.258925] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 37.268255] Call Trace: [ 37.270825] dump_stack+0x1b2/0x281 [ 37.274478] ccid3_update_send_interval.cold+0x87/0x93 [ 37.279764] ccid3_hc_tx_packet_sent+0x10f/0x140 [ 37.284516] ? ccid3_update_send_interval+0x100/0x100 [ 37.289690] dccp_xmit_packet+0x24b/0x6d0 [ 37.293814] dccp_write_xmit+0x140/0x1a0 [ 37.297853] dccp_sendmsg+0x6f6/0x890 [ 37.301638] ? dccp_ioctl+0x150/0x150 [ 37.305424] ? copy_msghdr_from_user+0x218/0x3b0 [ 37.310153] ? kernel_recvmsg+0x210/0x210 [ 37.314291] inet_sendmsg+0x11a/0x4e0 [ 37.318069] ? security_socket_sendmsg+0x83/0xb0 [ 37.322799] ? inet_recvmsg+0x4d0/0x4d0 [ 37.326749] sock_sendmsg+0xb5/0x100 [ 37.330449] ___sys_sendmsg+0x326/0x800 [ 37.334399] ? copy_msghdr_from_user+0x3b0/0x3b0 [ 37.339129] ? __release_sock+0x227/0x350 [ 37.343254] ? dccp_sendmsg+0x4eb/0x890 [ 37.347206] ? lock_downgrade+0x740/0x740 [ 37.351358] ? __local_bh_enable_ip+0xc1/0x170 [ 37.355917] ? trace_hardirqs_on_caller+0x3a8/0x580 [ 37.360911] ? dccp_sendmsg+0x4eb/0x890 [ 37.364861] ? __local_bh_enable_ip+0xc1/0x170 [ 37.369422] ? dccp_sendmsg+0x4fa/0x890 [ 37.373410] ? trace_hardirqs_on+0x10/0x10 [ 37.377640] ? dccp_ioctl+0x150/0x150 [ 37.381423] ? __fdget+0x167/0x1f0 [ 37.384948] ? sockfd_lookup_light+0xb2/0x160 [ 37.389418] __sys_sendmmsg+0x129/0x330 [ 37.393375] ? SyS_sendmsg+0x40/0x40 [ 37.397078] ? SyS_sendto+0x1e7/0x2c0 [ 37.400861] ? SyS_accept+0x30/0x30 [ 37.404493] ? up_read+0x17/0x30 [ 37.407877] SyS_sendmmsg+0x2f/0x50 [ 37.411488] ? __sys_sendmmsg+0x330/0x330 [ 37.415650] do_syscall_64+0x1d5/0x640 [ 37.419525] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 37.424703] RIP: 0033:0x7f0d6280eef9 [ 37.428390] RSP: 002b:00007ffc984a0bf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 executing program [ 37.436073] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f0d6280eef9 [ 37.443325] RDX: 0000000000000001 RSI: 0000000020000fc0 RDI: 0000000000000004 [ 37.450574] RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffc984a0d98 [ 37.457828] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc984a0c0c [ 37.465077] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 37.491812] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:101/ccid3_update_send_interval() [ 37.502377] CPU: 1 PID: 8007 Comm: syz-executor909 Not tainted 4.14.265-syzkaller #0 [ 37.510272] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 37.519602] Call Trace: [ 37.522171] dump_stack+0x1b2/0x281 [ 37.525784] ccid3_update_send_interval.cold+0x87/0x93 [ 37.531037] ccid3_hc_tx_packet_sent+0x10f/0x140 [ 37.535783] ? ccid3_update_send_interval+0x100/0x100 [ 37.540955] dccp_xmit_packet+0x24b/0x6d0 [ 37.545082] dccp_write_xmit+0x140/0x1a0 [ 37.549147] dccp_sendmsg+0x6f6/0x890 [ 37.552932] ? dccp_ioctl+0x150/0x150 [ 37.556711] ? copy_msghdr_from_user+0x218/0x3b0 [ 37.561444] ? kernel_recvmsg+0x210/0x210 [ 37.565571] inet_sendmsg+0x11a/0x4e0 [ 37.569357] ? security_socket_sendmsg+0x83/0xb0 [ 37.574089] ? inet_recvmsg+0x4d0/0x4d0 [ 37.578040] sock_sendmsg+0xb5/0x100 [ 37.581732] ___sys_sendmsg+0x326/0x800 [ 37.585692] ? copy_msghdr_from_user+0x3b0/0x3b0 [ 37.590422] ? __release_sock+0x227/0x350 [ 37.594544] ? dccp_sendmsg+0x4eb/0x890 [ 37.598507] ? lock_downgrade+0x740/0x740 [ 37.602631] ? __local_bh_enable_ip+0xc1/0x170 [ 37.607189] ? trace_hardirqs_on_caller+0x3a8/0x580 [ 37.612191] ? dccp_sendmsg+0x4eb/0x890 [ 37.616142] ? __local_bh_enable_ip+0xc1/0x170 [ 37.620701] ? dccp_sendmsg+0x4fa/0x890 [ 37.624658] ? trace_hardirqs_on+0x10/0x10 [ 37.628884] ? dccp_ioctl+0x150/0x150 [ 37.632669] ? __fdget+0x167/0x1f0 [ 37.636185] ? sockfd_lookup_light+0xb2/0x160 [ 37.640676] __sys_sendmmsg+0x129/0x330 [ 37.644667] ? SyS_sendmsg+0x40/0x40 [ 37.648380] ? SyS_sendto+0x1e7/0x2c0 [ 37.652173] ? SyS_accept+0x30/0x30 [ 37.655784] ? up_read+0x17/0x30 [ 37.659144] SyS_sendmmsg+0x2f/0x50 [ 37.662758] ? __sys_sendmmsg+0x330/0x330 [ 37.666921] do_syscall_64+0x1d5/0x640 [ 37.670789] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 37.675961] RIP: 0033:0x7f0d6280eef9 [ 37.679655] RSP: 002b:00007ffc984a0bf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 executing program [ 37.687352] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f0d6280eef9 [ 37.694623] RDX: 0000000000000001 RSI: 0000000020000fc0 RDI: 0000000000000004 [ 37.701875] RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffc984a0d98 [ 37.709119] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc984a0c0c [ 37.716365] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 37.743064] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:101/ccid3_update_send_interval() [ 37.753599] CPU: 1 PID: 8008 Comm: syz-executor909 Not tainted 4.14.265-syzkaller #0 [ 37.761464] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 37.770794] Call Trace: [ 37.773388] dump_stack+0x1b2/0x281 [ 37.776995] ccid3_update_send_interval.cold+0x87/0x93 [ 37.782264] ccid3_hc_tx_packet_sent+0x10f/0x140 [ 37.786997] ? ccid3_update_send_interval+0x100/0x100 [ 37.792169] dccp_xmit_packet+0x24b/0x6d0 [ 37.796298] dccp_write_xmit+0x140/0x1a0 [ 37.800336] dccp_sendmsg+0x6f6/0x890 [ 37.804122] ? dccp_ioctl+0x150/0x150 [ 37.807901] ? copy_msghdr_from_user+0x218/0x3b0 [ 37.812629] ? kernel_recvmsg+0x210/0x210 [ 37.816752] inet_sendmsg+0x11a/0x4e0 [ 37.820527] ? security_socket_sendmsg+0x83/0xb0 [ 37.825257] ? inet_recvmsg+0x4d0/0x4d0 [ 37.829206] sock_sendmsg+0xb5/0x100 [ 37.832898] ___sys_sendmsg+0x326/0x800 [ 37.836850] ? copy_msghdr_from_user+0x3b0/0x3b0 [ 37.841593] ? __release_sock+0x227/0x350 [ 37.845720] ? dccp_sendmsg+0x4eb/0x890 [ 37.849671] ? lock_downgrade+0x740/0x740 [ 37.853801] ? __local_bh_enable_ip+0xc1/0x170 [ 37.858380] ? trace_hardirqs_on_caller+0x3a8/0x580 [ 37.863368] ? dccp_sendmsg+0x4eb/0x890 [ 37.867341] ? __local_bh_enable_ip+0xc1/0x170 [ 37.871899] ? dccp_sendmsg+0x4fa/0x890 [ 37.875858] ? trace_hardirqs_on+0x10/0x10 [ 37.880088] ? dccp_ioctl+0x150/0x150 [ 37.883898] ? __fdget+0x167/0x1f0 [ 37.887412] ? sockfd_lookup_light+0xb2/0x160