INIT: Entering runlevel: 2 [info] Using makefile-style concurrent boot in runlevel 2. [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.10.1' (ECDSA) to the list of known hosts. net.ipv6.conf.syz_tun.accept_dad = 0 net.ipv6.conf.syz_tun.router_solicitations = 0 syzkaller login: [ 47.150968] IPVS: ftp: loaded support on port[0] = 21 [ 47.333871] bridge0: port 1(bridge_slave_0) entered blocking state [ 47.340327] bridge0: port 1(bridge_slave_0) entered disabled state [ 47.347720] device bridge_slave_0 entered promiscuous mode [ 47.363468] bridge0: port 2(bridge_slave_1) entered blocking state [ 47.369833] bridge0: port 2(bridge_slave_1) entered disabled state [ 47.376696] device bridge_slave_1 entered promiscuous mode [ 47.391232] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 47.406499] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 47.444747] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 47.461490] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 47.519067] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 47.526361] team0: Port device team_slave_0 added [ 47.540289] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 47.547581] team0: Port device team_slave_1 added [ 47.561816] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 47.577575] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 47.593308] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 47.609661] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready RTNETLINK answers: Operation not supported RTNETLINK answers: No buffer space available RTNETLINK answers: Operation not supported [ 47.714599] bridge0: port 2(bridge_slave_1) entered blocking state [ 47.721049] bridge0: port 2(bridge_slave_1) entered forwarding state [ 47.727793] bridge0: port 1(bridge_slave_0) entered blocking state [ 47.734137] bridge0: port 1(bridge_slave_0) entered forwarding state RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument [ 48.096310] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 48.102532] 8021q: adding VLAN 0 to HW filter on device bond0 [ 48.141588] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 48.180069] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 48.187357] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 48.220760] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 48.227040] 8021q: adding VLAN 0 to HW filter on device team0 [ 48.288416] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready executing program [ 48.460108] ================================================================== [ 48.467552] BUG: KASAN: use-after-free in skb_release_data+0x19b/0x860 [ 48.474200] Write of size 4 at addr ffff8801d6ccb360 by task syzkaller248205/4481 [ 48.481796] [ 48.483408] CPU: 1 PID: 4481 Comm: syzkaller248205 Not tainted 4.16.0+ #2 [ 48.490312] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 48.499640] Call Trace: [ 48.502210] dump_stack+0x1b9/0x294 [ 48.505815] ? dump_stack_print_info.cold.2+0x52/0x52 [ 48.510985] ? printk+0x9e/0xba [ 48.514244] ? kmsg_dump_rewind_nolock+0xe4/0xe4 [ 48.518982] ? kasan_check_write+0x14/0x20 [ 48.523198] print_address_description+0x6c/0x20b [ 48.528021] ? skb_release_data+0x19b/0x860 [ 48.532320] kasan_report.cold.7+0x242/0x2fe [ 48.536711] check_memory_region+0x13e/0x1b0 [ 48.541101] kasan_check_write+0x14/0x20 [ 48.545141] skb_release_data+0x19b/0x860 [ 48.549270] ? skb_tx_error+0x2f0/0x2f0 [ 48.553229] ? kasan_check_read+0x11/0x20 [ 48.557353] ? rcu_is_watching+0x85/0x140 [ 48.561479] ? kasan_check_write+0x14/0x20 [ 48.565694] ? sock_rmem_free+0x6f/0x90 [ 48.569653] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 48.575169] skb_release_all+0x4a/0x60 [ 48.579443] kfree_skb+0x195/0x560 [ 48.582959] ? skb_queue_purge+0x19/0x40 [ 48.586997] ? __kfree_skb+0x20/0x20 [ 48.590688] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 48.595256] ? _raw_spin_unlock_irqrestore+0x74/0xc0 [ 48.600338] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 48.605332] ? trace_hardirqs_on+0xd/0x10 [ 48.609461] ? skb_dequeue+0x12f/0x180 [ 48.613324] skb_queue_purge+0x19/0x40 [ 48.617191] packet_sock_destruct+0x93/0x290 [ 48.621580] ? packet_mm_close+0xc0/0xc0 [ 48.625615] ? graph_lock+0x170/0x170 [ 48.629391] ? __free_object+0x16e/0x330 [ 48.633428] ? __list_del_entry_valid.cold.1+0x58/0x58 [ 48.638680] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 48.643250] ? packet_mm_close+0xc0/0xc0 [ 48.647294] __sk_destruct+0xff/0xa40 [ 48.651077] ? sock_warn_obsolete_bsdism+0xb0/0xb0 [ 48.655989] ? graph_lock+0x170/0x170 [ 48.659765] ? lock_downgrade+0x8e0/0x8e0 [ 48.663891] ? __lock_is_held+0xb5/0x140 [ 48.667932] ? kasan_check_read+0x11/0x20 [ 48.672061] ? do_raw_spin_unlock+0x9e/0x2e0 [ 48.676466] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 48.681038] ? _raw_spin_unlock_irqrestore+0x74/0xc0 [ 48.686122] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 48.691637] ? refcount_sub_and_test+0x212/0x330 [ 48.696370] ? refcount_inc_not_zero+0x2d0/0x2d0 [ 48.701102] ? refcount_inc_not_zero+0x2d0/0x2d0 [ 48.705833] ? pcpu_free_area+0xa90/0xa90 [ 48.709958] sk_destruct+0x78/0x90 [ 48.713477] __sk_free+0x22e/0x340 [ 48.716997] sk_free+0x42/0x50 [ 48.720170] packet_release+0xa18/0xd50 [ 48.724121] ? lock_downgrade+0x8e0/0x8e0 [ 48.728248] ? packet_lookup_frame+0x270/0x270 [ 48.732809] ? cpumask_weight.constprop.5+0x44/0x44 [ 48.737803] ? do_raw_spin_lock+0xc1/0x200 [ 48.742018] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 48.747540] ? locks_remove_file+0x3f7/0x5a0 [ 48.751926] ? fcntl_setlk+0x1020/0x1020 [ 48.755965] ? fsnotify+0x415/0x1100 [ 48.759658] ? fsnotify_first_mark+0x330/0x330 [ 48.764225] sock_release+0x96/0x1b0 [ 48.767918] ? sock_alloc_file+0x4e0/0x4e0 [ 48.772135] sock_close+0x16/0x20 [ 48.775564] __fput+0x34d/0x890 [ 48.778821] ? fput+0x1a0/0x1a0 [ 48.782087] ? check_same_owner+0x320/0x320 [ 48.786385] ____fput+0x15/0x20 [ 48.789641] task_work_run+0x1e4/0x290 [ 48.793506] ? task_work_cancel+0x240/0x240 [ 48.797808] ? switch_task_namespaces+0xbd/0xd0 [ 48.802455] do_exit+0x1aee/0x2730 [ 48.805973] ? do_raw_spin_trylock+0x181/0x1b0 [ 48.810530] ? mm_update_next_owner+0x980/0x980 [ 48.815186] ? kasan_check_write+0x14/0x20 [ 48.819398] ? do_raw_spin_lock+0xc1/0x200 [ 48.823608] ? trace_hardirqs_off+0xd/0x10 [ 48.827822] ? _raw_spin_unlock_irqrestore+0x63/0xc0 [ 48.832921] ? debug_check_no_obj_freed+0x2ff/0x584 [ 48.837925] ? trace_hardirqs_off+0xd/0x10 [ 48.842136] ? quarantine_put+0xeb/0x190 [ 48.846175] ? kfree+0x111/0x260 [ 48.849517] ? ___sys_sendmsg+0x31a/0x940 [ 48.853642] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 48.858636] ? trace_hardirqs_on+0xd/0x10 [ 48.862763] ? ___sys_sendmsg+0x31f/0x940 [ 48.866894] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 48.872412] ? copy_msghdr_from_user+0x560/0x560 [ 48.877146] ? vm_insert_mixed_mkwrite+0x40/0x40 [ 48.881877] ? graph_lock+0x170/0x170 [ 48.885658] ? graph_lock+0x170/0x170 [ 48.889437] ? find_held_lock+0x36/0x1c0 [ 48.893484] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 48.899008] ? __fget_light+0x2ef/0x430 [ 48.902959] ? fget_raw+0x20/0x20 [ 48.906389] ? find_held_lock+0x36/0x1c0 [ 48.910430] ? lock_downgrade+0x8e0/0x8e0 [ 48.914554] ? handle_mm_fault+0x8c0/0xc70 [ 48.918768] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 48.924281] ? sockfd_lookup_light+0xc5/0x160 [ 48.928758] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 48.934272] ? __sys_sendmsg+0x1aa/0x270 [ 48.938308] ? SyS_shutdown+0x30/0x30 [ 48.942089] ? __do_page_fault+0x441/0xe40 [ 48.946305] do_group_exit+0x16f/0x430 [ 48.950169] ? SyS_exit+0x30/0x30 [ 48.953603] ? syscall_slow_exit_work+0x4f0/0x4f0 [ 48.958422] ? do_syscall_64+0xb7/0x9d0 [ 48.962374] ? do_group_exit+0x430/0x430 [ 48.966413] SyS_exit_group+0x1d/0x20 [ 48.970194] do_syscall_64+0x29e/0x9d0 [ 48.974058] ? vmalloc_sync_all+0x30/0x30 [ 48.978186] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 48.982919] ? syscall_return_slowpath+0x5c0/0x5c0 [ 48.987827] ? syscall_return_slowpath+0x30f/0x5c0 [ 48.992737] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 48.998079] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 49.002902] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 49.008068] RIP: 0033:0x4418c9 [ 49.011234] RSP: 002b:00007ffd6681b098 EFLAGS: 00000206 ORIG_RAX: 00000000000000e7 [ 49.018927] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004418c9 [ 49.026174] RDX: 00000000004418c9 RSI: 0000000000000000 RDI: 0000000000000001 [ 49.033418] RBP: 00000000006cd018 R08: 0000000000000000 R09: 0000000000000003 [ 49.040670] R10: 0000000000000000 R11: 0000000000000206 R12: 00000000004025c0 [ 49.047919] R13: 0000000000402650 R14: 0000000000000000 R15: 0000000000000000 [ 49.055172] [ 49.056777] Allocated by task 4481: [ 49.060389] save_stack+0x43/0xd0 [ 49.063818] kasan_kmalloc+0xc4/0xe0 [ 49.067588] __kmalloc_node_track_caller+0x47/0x70 [ 49.072507] __kmalloc_reserve.isra.38+0x3a/0xe0 [ 49.077239] __alloc_skb+0x14d/0x780 [ 49.080930] alloc_skb_with_frags+0x137/0x760 [ 49.085405] sock_alloc_send_pskb+0x87a/0xae0 [ 49.089886] packet_sendmsg+0x1bd1/0x60b0 [ 49.094012] sock_sendmsg+0xd5/0x120 [ 49.097707] ___sys_sendmsg+0x805/0x940 [ 49.101671] __sys_sendmsg+0x115/0x270 [ 49.105536] SyS_sendmsg+0x29/0x30 [ 49.109057] do_syscall_64+0x29e/0x9d0 [ 49.112922] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 49.118090] [ 49.119694] Freed by task 4481: [ 49.122952] save_stack+0x43/0xd0 [ 49.126383] __kasan_slab_free+0x11a/0x170 [ 49.130594] kasan_slab_free+0xe/0x10 [ 49.134370] kfree+0xd9/0x260 [ 49.137452] skb_free_head+0x99/0xc0 [ 49.141141] skb_release_data+0x690/0x860 [ 49.145264] skb_release_all+0x4a/0x60 [ 49.149128] kfree_skb+0x195/0x560 [ 49.152646] ip6_tnl_start_xmit+0xa44/0x2290 [ 49.157037] dev_hard_start_xmit+0x264/0xc10 [ 49.161424] __dev_queue_xmit+0x2724/0x34c0 [ 49.165722] dev_queue_xmit+0x17/0x20 [ 49.169499] packet_sendmsg+0x411c/0x60b0 [ 49.173622] sock_sendmsg+0xd5/0x120 [ 49.177310] ___sys_sendmsg+0x805/0x940 [ 49.181260] __sys_sendmsg+0x115/0x270 [ 49.185132] SyS_sendmsg+0x29/0x30 [ 49.188653] do_syscall_64+0x29e/0x9d0 [ 49.192520] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 49.197679] [ 49.199285] The buggy address belongs to the object at ffff8801d6ccb280 [ 49.199285] which belongs to the cache kmalloc-512 of size 512 [ 49.211926] The buggy address is located 224 bytes inside of [ 49.211926] 512-byte region [ffff8801d6ccb280, ffff8801d6ccb480) [ 49.223774] The buggy address belongs to the page: [ 49.228681] page:ffffea00075b32c0 count:1 mapcount:0 mapping:ffff8801d6ccb000 index:0x0 [ 49.236808] flags: 0x2fffc0000000100(slab) [ 49.241034] raw: 02fffc0000000100 ffff8801d6ccb000 0000000000000000 0000000100000006 [ 49.248895] raw: ffffea000753c1e0 ffffea0007205ce0 ffff8801dac00940 0000000000000000 [ 49.256748] page dumped because: kasan: bad access detected [ 49.262427] [ 49.264032] Memory state around the buggy address: [ 49.268938] ffff8801d6ccb200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 49.276272] ffff8801d6ccb280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 49.283605] >ffff8801d6ccb300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 49.290936] ^ [ 49.297411] ffff8801d6ccb380: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 49.304746] ffff8801d6ccb400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 49.312077] ================================================================== [ 49.319409] Disabling lock debugging due to kernel taint [ 49.325646] Kernel panic - not syncing: panic_on_warn set ... [ 49.325646] [ 49.333021] CPU: 1 PID: 4481 Comm: syzkaller248205 Tainted: G B 4.16.0+ #2 [ 49.341333] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 49.350660] Call Trace: [ 49.353227] dump_stack+0x1b9/0x294 [ 49.356830] ? dump_stack_print_info.cold.2+0x52/0x52 [ 49.361996] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 49.366733] ? skb_release_data+0xd0/0x860 [ 49.370943] panic+0x22f/0x4de [ 49.374111] ? add_taint.cold.5+0x16/0x16 [ 49.378241] ? do_raw_spin_unlock+0x9e/0x2e0 [ 49.382636] ? do_raw_spin_unlock+0x9e/0x2e0 [ 49.387028] ? skb_release_data+0x19b/0x860 [ 49.391333] kasan_end_report+0x47/0x4f [ 49.395281] kasan_report.cold.7+0x76/0x2fe [ 49.399577] check_memory_region+0x13e/0x1b0 [ 49.403959] kasan_check_write+0x14/0x20 [ 49.407993] skb_release_data+0x19b/0x860 [ 49.412123] ? skb_tx_error+0x2f0/0x2f0 [ 49.416073] ? kasan_check_read+0x11/0x20 [ 49.420197] ? rcu_is_watching+0x85/0x140 [ 49.424319] ? kasan_check_write+0x14/0x20 [ 49.428530] ? sock_rmem_free+0x6f/0x90 [ 49.432482] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 49.437993] skb_release_all+0x4a/0x60 [ 49.441858] kfree_skb+0x195/0x560 [ 49.445371] ? skb_queue_purge+0x19/0x40 [ 49.449406] ? __kfree_skb+0x20/0x20 [ 49.453097] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 49.457655] ? _raw_spin_unlock_irqrestore+0x74/0xc0 [ 49.462732] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 49.467726] ? trace_hardirqs_on+0xd/0x10 [ 49.471854] ? skb_dequeue+0x12f/0x180 [ 49.475724] skb_queue_purge+0x19/0x40 [ 49.479595] packet_sock_destruct+0x93/0x290 [ 49.483979] ? packet_mm_close+0xc0/0xc0 [ 49.488022] ? graph_lock+0x170/0x170 [ 49.491801] ? __free_object+0x16e/0x330 [ 49.495837] ? __list_del_entry_valid.cold.1+0x58/0x58 [ 49.501091] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 49.505648] ? packet_mm_close+0xc0/0xc0 [ 49.509684] __sk_destruct+0xff/0xa40 [ 49.513467] ? sock_warn_obsolete_bsdism+0xb0/0xb0 [ 49.518371] ? graph_lock+0x170/0x170 [ 49.522155] ? lock_downgrade+0x8e0/0x8e0 [ 49.526291] ? __lock_is_held+0xb5/0x140 [ 49.530330] ? kasan_check_read+0x11/0x20 [ 49.534460] ? do_raw_spin_unlock+0x9e/0x2e0 [ 49.538849] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 49.543411] ? _raw_spin_unlock_irqrestore+0x74/0xc0 [ 49.548492] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 49.554007] ? refcount_sub_and_test+0x212/0x330 [ 49.558744] ? refcount_inc_not_zero+0x2d0/0x2d0 [ 49.563477] ? refcount_inc_not_zero+0x2d0/0x2d0 [ 49.568211] ? pcpu_free_area+0xa90/0xa90 [ 49.572337] sk_destruct+0x78/0x90 [ 49.575858] __sk_free+0x22e/0x340 [ 49.579375] sk_free+0x42/0x50 [ 49.582545] packet_release+0xa18/0xd50 [ 49.586494] ? lock_downgrade+0x8e0/0x8e0 [ 49.590621] ? packet_lookup_frame+0x270/0x270 [ 49.595179] ? cpumask_weight.constprop.5+0x44/0x44 [ 49.600173] ? do_raw_spin_lock+0xc1/0x200 [ 49.604383] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 49.609897] ? locks_remove_file+0x3f7/0x5a0 [ 49.614279] ? fcntl_setlk+0x1020/0x1020 [ 49.618317] ? fsnotify+0x415/0x1100 [ 49.622011] ? fsnotify_first_mark+0x330/0x330 [ 49.626573] sock_release+0x96/0x1b0 [ 49.630261] ? sock_alloc_file+0x4e0/0x4e0 [ 49.634469] sock_close+0x16/0x20 [ 49.637897] __fput+0x34d/0x890 [ 49.641152] ? fput+0x1a0/0x1a0 [ 49.644411] ? check_same_owner+0x320/0x320 [ 49.648708] ____fput+0x15/0x20 [ 49.651961] task_work_run+0x1e4/0x290 [ 49.655824] ? task_work_cancel+0x240/0x240 [ 49.660125] ? switch_task_namespaces+0xbd/0xd0 [ 49.664771] do_exit+0x1aee/0x2730 [ 49.668289] ? do_raw_spin_trylock+0x181/0x1b0 [ 49.672846] ? mm_update_next_owner+0x980/0x980 [ 49.677497] ? kasan_check_write+0x14/0x20 [ 49.681714] ? do_raw_spin_lock+0xc1/0x200 [ 49.685937] ? trace_hardirqs_off+0xd/0x10 [ 49.690153] ? _raw_spin_unlock_irqrestore+0x63/0xc0 [ 49.695242] ? debug_check_no_obj_freed+0x2ff/0x584 [ 49.700242] ? trace_hardirqs_off+0xd/0x10 [ 49.704459] ? quarantine_put+0xeb/0x190 [ 49.708494] ? kfree+0x111/0x260 [ 49.711835] ? ___sys_sendmsg+0x31a/0x940 [ 49.715959] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 49.720947] ? trace_hardirqs_on+0xd/0x10 [ 49.725070] ? ___sys_sendmsg+0x31f/0x940 [ 49.729193] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 49.734706] ? copy_msghdr_from_user+0x560/0x560 [ 49.739441] ? vm_insert_mixed_mkwrite+0x40/0x40 [ 49.744172] ? graph_lock+0x170/0x170 [ 49.747951] ? graph_lock+0x170/0x170 [ 49.751728] ? find_held_lock+0x36/0x1c0 [ 49.755767] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 49.761278] ? __fget_light+0x2ef/0x430 [ 49.765229] ? fget_raw+0x20/0x20 [ 49.768659] ? find_held_lock+0x36/0x1c0 [ 49.772697] ? lock_downgrade+0x8e0/0x8e0 [ 49.776821] ? handle_mm_fault+0x8c0/0xc70 [ 49.781038] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 49.786551] ? sockfd_lookup_light+0xc5/0x160 [ 49.791028] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 49.796540] ? __sys_sendmsg+0x1aa/0x270 [ 49.800583] ? SyS_shutdown+0x30/0x30 [ 49.804366] ? __do_page_fault+0x441/0xe40 [ 49.808576] do_group_exit+0x16f/0x430 [ 49.812441] ? SyS_exit+0x30/0x30 [ 49.815870] ? syscall_slow_exit_work+0x4f0/0x4f0 [ 49.820689] ? do_syscall_64+0xb7/0x9d0 [ 49.824639] ? do_group_exit+0x430/0x430 [ 49.828677] SyS_exit_group+0x1d/0x20 [ 49.832451] do_syscall_64+0x29e/0x9d0 [ 49.836313] ? vmalloc_sync_all+0x30/0x30 [ 49.840434] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 49.845166] ? syscall_return_slowpath+0x5c0/0x5c0 [ 49.850071] ? syscall_return_slowpath+0x30f/0x5c0 [ 49.854978] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 49.860320] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 49.865140] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 49.870304] RIP: 0033:0x4418c9 [ 49.873469] RSP: 002b:00007ffd6681b098 EFLAGS: 00000206 ORIG_RAX: 00000000000000e7 [ 49.881152] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004418c9 [ 49.888395] RDX: 00000000004418c9 RSI: 0000000000000000 RDI: 0000000000000001 [ 49.895640] RBP: 00000000006cd018 R08: 0000000000000000 R09: 0000000000000003 [ 49.902887] R10: 0000000000000000 R11: 0000000000000206 R12: 00000000004025c0 [ 49.910131] R13: 0000000000402650 R14: 0000000000000000 R15: 0000000000000000 [ 49.917851] Dumping ftrace buffer: [ 49.921363] (ftrace buffer empty) [ 49.925046] Kernel Offset: disabled [ 49.928650] Rebooting in 86400 seconds..