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 '10.128.10.29' (ECDSA) to the list of known hosts. net.ipv6.conf.syz_tun.accept_dad = 0 syzkaller login: [ 28.463936] IPVS: ftp: loaded support on port[0] = 21 net.ipv6.conf.syz_tun.router_solicitations = 0 [ 28.647438] bridge0: port 1(bridge_slave_0) entered blocking state [ 28.653915] bridge0: port 1(bridge_slave_0) entered disabled state [ 28.661319] device bridge_slave_0 entered promiscuous mode [ 28.676306] bridge0: port 2(bridge_slave_1) entered blocking state [ 28.682669] bridge0: port 2(bridge_slave_1) entered disabled state [ 28.689552] device bridge_slave_1 entered promiscuous mode [ 28.703915] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 28.719442] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 28.756436] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 28.773873] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 28.829742] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 28.836952] team0: Port device team_slave_0 added [ 28.850348] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 28.857384] team0: Port device team_slave_1 added [ 28.871067] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 28.887169] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 28.902245] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 28.917660] 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 [ 29.024200] bridge0: port 2(bridge_slave_1) entered blocking state [ 29.030657] bridge0: port 2(bridge_slave_1) entered forwarding state [ 29.037505] bridge0: port 1(bridge_slave_0) entered blocking state [ 29.043861] 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 [ 29.417159] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 29.423273] 8021q: adding VLAN 0 to HW filter on device bond0 [ 29.462788] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 29.502776] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 29.510124] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 29.546438] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 29.552552] 8021q: adding VLAN 0 to HW filter on device team0 [ 29.600302] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready executing program [ 29.819149] ================================================================== [ 29.826630] BUG: KASAN: use-after-free in skb_release_data+0x19b/0x860 [ 29.833287] Write of size 4 at addr ffff8801d9364920 by task syzkaller037113/4417 [ 29.840887] [ 29.842506] CPU: 1 PID: 4417 Comm: syzkaller037113 Not tainted 4.16.0+ #1 [ 29.849419] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 29.858760] Call Trace: [ 29.861351] dump_stack+0x1b9/0x294 [ 29.864972] ? dump_stack_print_info.cold.2+0x52/0x52 [ 29.870147] ? printk+0x9e/0xba [ 29.873416] ? kmsg_dump_rewind_nolock+0xe4/0xe4 [ 29.878165] ? kasan_check_write+0x14/0x20 [ 29.882395] print_address_description+0x6c/0x20b [ 29.887229] ? skb_release_data+0x19b/0x860 [ 29.891538] kasan_report.cold.7+0x242/0x2fe [ 29.895934] check_memory_region+0x13e/0x1b0 [ 29.900333] kasan_check_write+0x14/0x20 [ 29.904382] skb_release_data+0x19b/0x860 [ 29.908515] ? skb_tx_error+0x2f0/0x2f0 [ 29.912479] ? kasan_check_read+0x11/0x20 [ 29.916618] ? rcu_is_watching+0x85/0x140 [ 29.920761] ? kasan_check_write+0x14/0x20 [ 29.924980] ? sock_rmem_free+0x6f/0x90 [ 29.928943] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 29.934472] skb_release_all+0x4a/0x60 [ 29.938352] kfree_skb+0x195/0x560 [ 29.941881] ? skb_queue_purge+0x19/0x40 [ 29.945926] ? __kfree_skb+0x20/0x20 [ 29.949629] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 29.954200] ? _raw_spin_unlock_irqrestore+0x74/0xc0 [ 29.959294] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 29.964306] ? trace_hardirqs_on+0xd/0x10 [ 29.968450] ? skb_dequeue+0x12f/0x180 [ 29.972329] skb_queue_purge+0x19/0x40 [ 29.976209] packet_sock_destruct+0x93/0x290 [ 29.980603] ? packet_mm_close+0xc0/0xc0 [ 29.984651] ? graph_lock+0x170/0x170 [ 29.988441] ? __free_object+0x16e/0x330 [ 29.992501] ? __list_del_entry_valid.cold.1+0x58/0x58 [ 29.997771] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 30.002346] ? packet_mm_close+0xc0/0xc0 [ 30.006405] __sk_destruct+0xff/0xa40 [ 30.010201] ? sock_warn_obsolete_bsdism+0xb0/0xb0 [ 30.015112] ? graph_lock+0x170/0x170 [ 30.018898] ? lock_downgrade+0x8e0/0x8e0 [ 30.023030] ? __lock_is_held+0xb5/0x140 [ 30.027076] ? kasan_check_read+0x11/0x20 [ 30.031207] ? do_raw_spin_unlock+0x9e/0x2e0 [ 30.035601] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 30.040309] ? _raw_spin_unlock_irqrestore+0x74/0xc0 [ 30.045503] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 30.051032] ? refcount_sub_and_test+0x212/0x330 [ 30.055777] ? refcount_inc_not_zero+0x2d0/0x2d0 [ 30.060526] ? refcount_inc_not_zero+0x2d0/0x2d0 [ 30.065276] ? pcpu_free_area+0xa90/0xa90 [ 30.069424] sk_destruct+0x78/0x90 [ 30.072958] __sk_free+0x22e/0x340 [ 30.076483] sk_free+0x42/0x50 [ 30.079664] packet_release+0xa18/0xd50 [ 30.083622] ? lock_downgrade+0x8e0/0x8e0 [ 30.087754] ? packet_lookup_frame+0x270/0x270 [ 30.092330] ? cpumask_weight.constprop.5+0x44/0x44 [ 30.097342] ? do_raw_spin_lock+0xc1/0x200 [ 30.101575] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 30.107100] ? locks_remove_file+0x3f7/0x5a0 [ 30.111494] ? fcntl_setlk+0x1020/0x1020 [ 30.115541] ? fsnotify+0x415/0x1100 [ 30.119251] ? fsnotify_first_mark+0x330/0x330 [ 30.123826] sock_release+0x96/0x1b0 [ 30.127524] ? sock_alloc_file+0x4e0/0x4e0 [ 30.131743] sock_close+0x16/0x20 [ 30.135175] __fput+0x34d/0x890 [ 30.138444] ? fput+0x1a0/0x1a0 [ 30.141714] ? check_same_owner+0x320/0x320 [ 30.146020] ____fput+0x15/0x20 [ 30.149288] task_work_run+0x1e4/0x290 [ 30.153164] ? task_work_cancel+0x240/0x240 [ 30.157471] ? switch_task_namespaces+0xbd/0xd0 [ 30.162125] do_exit+0x1aee/0x2730 [ 30.165644] ? lock_release+0xa10/0xa10 [ 30.169603] ? mm_update_next_owner+0x980/0x980 [ 30.174268] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 30.179796] ? import_iovec+0x24b/0x420 [ 30.183755] ? dup_iter+0x270/0x270 [ 30.187376] ? kasan_check_read+0x11/0x20 [ 30.191520] ? rcu_is_watching+0x85/0x140 [ 30.195665] ? rcu_pm_notify+0xc0/0xc0 [ 30.199547] ? ___sys_sendmsg+0x31a/0x940 [ 30.203696] ? kfree+0x1e9/0x260 [ 30.207055] ? ___sys_sendmsg+0x31f/0x940 [ 30.211190] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 30.216727] ? copy_msghdr_from_user+0x560/0x560 [ 30.221477] ? vm_insert_mixed_mkwrite+0x40/0x40 [ 30.226216] ? graph_lock+0x170/0x170 [ 30.230007] ? graph_lock+0x170/0x170 [ 30.233794] ? find_held_lock+0x36/0x1c0 [ 30.237867] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 30.243390] ? __fget_light+0x2ef/0x430 [ 30.247357] ? fget_raw+0x20/0x20 [ 30.250792] ? find_held_lock+0x36/0x1c0 [ 30.254846] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 30.260373] ? sockfd_lookup_light+0xc5/0x160 [ 30.264861] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 30.270386] ? __sys_sendmsg+0x1aa/0x270 [ 30.274445] ? SyS_shutdown+0x30/0x30 [ 30.278250] ? __do_page_fault+0x441/0xe40 [ 30.282493] do_group_exit+0x16f/0x430 [ 30.286382] ? SyS_exit+0x30/0x30 [ 30.289827] ? syscall_slow_exit_work+0x4f0/0x4f0 [ 30.294661] ? do_syscall_64+0xb7/0x9d0 [ 30.298627] ? do_group_exit+0x430/0x430 [ 30.302675] SyS_exit_group+0x1d/0x20 [ 30.306466] do_syscall_64+0x29e/0x9d0 [ 30.310350] ? vmalloc_sync_all+0x30/0x30 [ 30.314492] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 30.319242] ? syscall_return_slowpath+0x5c0/0x5c0 [ 30.324161] ? syscall_return_slowpath+0x30f/0x5c0 [ 30.329077] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 30.334433] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 30.339277] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 30.344456] RIP: 0033:0x4418c9 [ 30.347632] RSP: 002b:00007fff1b759618 EFLAGS: 00000202 ORIG_RAX: 00000000000000e7 [ 30.355323] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004418c9 [ 30.362583] RDX: 00000000004418c9 RSI: 0000000000000000 RDI: 0000000000000001 [ 30.369843] RBP: 00000000006cd018 R08: 0000000000000000 R09: 0000000000000003 [ 30.377093] R10: 0000000000000000 R11: 0000000000000202 R12: 00000000004025c0 [ 30.384348] R13: 0000000000402650 R14: 0000000000000000 R15: 0000000000000000 [ 30.391612] [ 30.393236] Allocated by task 4417: [ 30.396857] save_stack+0x43/0xd0 [ 30.400299] kasan_kmalloc+0xc4/0xe0 [ 30.404015] __kmalloc_node_track_caller+0x47/0x70 [ 30.408933] __kmalloc_reserve.isra.38+0x3a/0xe0 [ 30.413674] __alloc_skb+0x14d/0x780 [ 30.417368] alloc_skb_with_frags+0x137/0x760 [ 30.421845] sock_alloc_send_pskb+0x87a/0xae0 [ 30.426333] packet_sendmsg+0x1bd1/0x60b0 [ 30.430469] sock_sendmsg+0xd5/0x120 [ 30.434162] ___sys_sendmsg+0x805/0x940 [ 30.438116] __sys_sendmsg+0x115/0x270 [ 30.441982] SyS_sendmsg+0x29/0x30 [ 30.445506] do_syscall_64+0x29e/0x9d0 [ 30.449375] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 30.454541] [ 30.456152] Freed by task 4417: [ 30.459414] save_stack+0x43/0xd0 [ 30.462850] __kasan_slab_free+0x11a/0x170 [ 30.467065] kasan_slab_free+0xe/0x10 [ 30.470844] kfree+0xd9/0x260 [ 30.473958] skb_free_head+0x99/0xc0 [ 30.477667] skb_release_data+0x690/0x860 [ 30.481793] skb_release_all+0x4a/0x60 [ 30.485664] kfree_skb+0x195/0x560 [ 30.489206] ip6_tnl_start_xmit+0xa44/0x2290 [ 30.493592] dev_hard_start_xmit+0x264/0xc10 [ 30.497984] __dev_queue_xmit+0x2724/0x34c0 [ 30.502288] dev_queue_xmit+0x17/0x20 [ 30.506082] packet_sendmsg+0x411c/0x60b0 [ 30.510229] sock_sendmsg+0xd5/0x120 [ 30.513932] ___sys_sendmsg+0x805/0x940 [ 30.517883] __sys_sendmsg+0x115/0x270 [ 30.521747] SyS_sendmsg+0x29/0x30 [ 30.525270] do_syscall_64+0x29e/0x9d0 [ 30.529135] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 30.534295] [ 30.535905] The buggy address belongs to the object at ffff8801d9364840 [ 30.535905] which belongs to the cache kmalloc-512 of size 512 [ 30.548542] The buggy address is located 224 bytes inside of [ 30.548542] 512-byte region [ffff8801d9364840, ffff8801d9364a40) [ 30.560390] The buggy address belongs to the page: [ 30.565297] page:ffffea000764d900 count:1 mapcount:0 mapping:ffff8801d93640c0 index:0x0 [ 30.573419] flags: 0x2fffc0000000100(slab) [ 30.577646] raw: 02fffc0000000100 ffff8801d93640c0 0000000000000000 0000000100000006 [ 30.585518] raw: ffffea0007645ea0 ffffea000763b7a0 ffff8801dac00940 0000000000000000 [ 30.593374] page dumped because: kasan: bad access detected [ 30.599057] [ 30.600660] Memory state around the buggy address: [ 30.605567] ffff8801d9364800: fc fc fc fc fc fc fc fc fb fb fb fb fb fb fb fb [ 30.612906] ffff8801d9364880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.620244] >ffff8801d9364900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.627579] ^ [ 30.631962] ffff8801d9364980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.639298] ffff8801d9364a00: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 30.646631] ================================================================== [ 30.653975] Disabling lock debugging due to kernel taint [ 30.659789] Kernel panic - not syncing: panic_on_warn set ... [ 30.659789] [ 30.667161] CPU: 1 PID: 4417 Comm: syzkaller037113 Tainted: G B 4.16.0+ #1 [ 30.675472] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 30.684816] Call Trace: [ 30.687386] dump_stack+0x1b9/0x294 [ 30.690991] ? dump_stack_print_info.cold.2+0x52/0x52 [ 30.696163] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 30.700896] ? skb_release_data+0xd0/0x860 [ 30.705108] panic+0x22f/0x4de [ 30.708284] ? add_taint.cold.5+0x16/0x16 [ 30.712417] ? do_raw_spin_unlock+0x9e/0x2e0 [ 30.716812] ? do_raw_spin_unlock+0x9e/0x2e0 [ 30.721204] ? skb_release_data+0x19b/0x860 [ 30.725508] kasan_end_report+0x47/0x4f [ 30.729459] kasan_report.cold.7+0x76/0x2fe [ 30.733756] check_memory_region+0x13e/0x1b0 [ 30.738142] kasan_check_write+0x14/0x20 [ 30.742178] skb_release_data+0x19b/0x860 [ 30.746306] ? skb_tx_error+0x2f0/0x2f0 [ 30.750256] ? kasan_check_read+0x11/0x20 [ 30.754380] ? rcu_is_watching+0x85/0x140 [ 30.758505] ? kasan_check_write+0x14/0x20 [ 30.762720] ? sock_rmem_free+0x6f/0x90 [ 30.766674] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 30.772187] skb_release_all+0x4a/0x60 [ 30.776049] kfree_skb+0x195/0x560 [ 30.779565] ? skb_queue_purge+0x19/0x40 [ 30.783599] ? __kfree_skb+0x20/0x20 [ 30.787289] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 30.791848] ? _raw_spin_unlock_irqrestore+0x74/0xc0 [ 30.796928] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 30.801919] ? trace_hardirqs_on+0xd/0x10 [ 30.806047] ? skb_dequeue+0x12f/0x180 [ 30.809910] skb_queue_purge+0x19/0x40 [ 30.813777] packet_sock_destruct+0x93/0x290 [ 30.818164] ? packet_mm_close+0xc0/0xc0 [ 30.822199] ? graph_lock+0x170/0x170 [ 30.825979] ? __free_object+0x16e/0x330 [ 30.830022] ? __list_del_entry_valid.cold.1+0x58/0x58 [ 30.835277] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 30.839834] ? packet_mm_close+0xc0/0xc0 [ 30.843870] __sk_destruct+0xff/0xa40 [ 30.847651] ? sock_warn_obsolete_bsdism+0xb0/0xb0 [ 30.852557] ? graph_lock+0x170/0x170 [ 30.856333] ? lock_downgrade+0x8e0/0x8e0 [ 30.860455] ? __lock_is_held+0xb5/0x140 [ 30.864495] ? kasan_check_read+0x11/0x20 [ 30.868618] ? do_raw_spin_unlock+0x9e/0x2e0 [ 30.873007] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 30.877575] ? _raw_spin_unlock_irqrestore+0x74/0xc0 [ 30.882658] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 30.888173] ? refcount_sub_and_test+0x212/0x330 [ 30.892906] ? refcount_inc_not_zero+0x2d0/0x2d0 [ 30.897640] ? refcount_inc_not_zero+0x2d0/0x2d0 [ 30.902373] ? pcpu_free_area+0xa90/0xa90 [ 30.906501] sk_destruct+0x78/0x90 [ 30.910025] __sk_free+0x22e/0x340 [ 30.913554] sk_free+0x42/0x50 [ 30.916725] packet_release+0xa18/0xd50 [ 30.920677] ? lock_downgrade+0x8e0/0x8e0 [ 30.924801] ? packet_lookup_frame+0x270/0x270 [ 30.929372] ? cpumask_weight.constprop.5+0x44/0x44 [ 30.934365] ? do_raw_spin_lock+0xc1/0x200 [ 30.938581] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 30.944095] ? locks_remove_file+0x3f7/0x5a0 [ 30.948480] ? fcntl_setlk+0x1020/0x1020 [ 30.952520] ? fsnotify+0x415/0x1100 [ 30.956212] ? fsnotify_first_mark+0x330/0x330 [ 30.960772] sock_release+0x96/0x1b0 [ 30.964464] ? sock_alloc_file+0x4e0/0x4e0 [ 30.968675] sock_close+0x16/0x20 [ 30.972110] __fput+0x34d/0x890 [ 30.975370] ? fput+0x1a0/0x1a0 [ 30.978628] ? check_same_owner+0x320/0x320 [ 30.982926] ____fput+0x15/0x20 [ 30.986184] task_work_run+0x1e4/0x290 [ 30.990050] ? task_work_cancel+0x240/0x240 [ 30.994350] ? switch_task_namespaces+0xbd/0xd0 [ 30.998996] do_exit+0x1aee/0x2730 [ 31.002519] ? lock_release+0xa10/0xa10 [ 31.006482] ? mm_update_next_owner+0x980/0x980 [ 31.011131] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 31.016644] ? import_iovec+0x24b/0x420 [ 31.020598] ? dup_iter+0x270/0x270 [ 31.024205] ? kasan_check_read+0x11/0x20 [ 31.028330] ? rcu_is_watching+0x85/0x140 [ 31.032454] ? rcu_pm_notify+0xc0/0xc0 [ 31.036318] ? ___sys_sendmsg+0x31a/0x940 [ 31.040443] ? kfree+0x1e9/0x260 [ 31.043784] ? ___sys_sendmsg+0x31f/0x940 [ 31.047908] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 31.053422] ? copy_msghdr_from_user+0x560/0x560 [ 31.058155] ? vm_insert_mixed_mkwrite+0x40/0x40 [ 31.062886] ? graph_lock+0x170/0x170 [ 31.066663] ? graph_lock+0x170/0x170 [ 31.070438] ? find_held_lock+0x36/0x1c0 [ 31.074476] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 31.079991] ? __fget_light+0x2ef/0x430 [ 31.083946] ? fget_raw+0x20/0x20 [ 31.087377] ? find_held_lock+0x36/0x1c0 [ 31.091419] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 31.096936] ? sockfd_lookup_light+0xc5/0x160 [ 31.101411] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 31.106925] ? __sys_sendmsg+0x1aa/0x270 [ 31.110964] ? SyS_shutdown+0x30/0x30 [ 31.114746] ? __do_page_fault+0x441/0xe40 [ 31.118959] do_group_exit+0x16f/0x430 [ 31.122822] ? SyS_exit+0x30/0x30 [ 31.126258] ? syscall_slow_exit_work+0x4f0/0x4f0 [ 31.131076] ? do_syscall_64+0xb7/0x9d0 [ 31.135029] ? do_group_exit+0x430/0x430 [ 31.139067] SyS_exit_group+0x1d/0x20 [ 31.142844] do_syscall_64+0x29e/0x9d0 [ 31.146707] ? vmalloc_sync_all+0x30/0x30 [ 31.150837] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 31.155584] ? syscall_return_slowpath+0x5c0/0x5c0 [ 31.160506] ? syscall_return_slowpath+0x30f/0x5c0 [ 31.165417] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 31.170757] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 31.175576] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 31.180743] RIP: 0033:0x4418c9 [ 31.183908] RSP: 002b:00007fff1b759618 EFLAGS: 00000202 ORIG_RAX: 00000000000000e7 [ 31.191595] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004418c9 [ 31.198840] RDX: 00000000004418c9 RSI: 0000000000000000 RDI: 0000000000000001 [ 31.206087] RBP: 00000000006cd018 R08: 0000000000000000 R09: 0000000000000003 [ 31.213343] R10: 0000000000000000 R11: 0000000000000202 R12: 00000000004025c0 [ 31.220589] R13: 0000000000402650 R14: 0000000000000000 R15: 0000000000000000 [ 31.228228] Dumping ftrace buffer: [ 31.231747] (ftrace buffer empty) [ 31.235447] Kernel Offset: disabled [ 31.239054] Rebooting in 86400 seconds..