[ OK ] Started Getty on tty1. [ OK ] Started Getty on tty2. [ 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 '10.128.10.63' (ECDSA) to the list of known hosts. syzkaller login: [ 41.406524] audit: type=1400 audit(1601898348.529:9): avc: denied { execmem } for pid=6489 comm="syz-executor873" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 41.407274] FAULT_INJECTION: forcing a failure. [ 41.407274] name failslab, interval 1, probability 0, space 0, times 1 [ 41.439025] CPU: 1 PID: 6489 Comm: syz-executor873 Not tainted 4.19.149-syzkaller #0 [ 41.446906] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 41.456250] Call Trace: [ 41.458829] dump_stack+0x22c/0x33e [ 41.462491] should_fail.cold+0xa/0x2f [ 41.466379] ? fault_create_debugfs_attr+0x1e0/0x1e0 [ 41.471481] __should_failslab+0x153/0x1b6 [ 41.475708] should_failslab+0x5/0xf [ 41.479408] __kmalloc_track_caller+0x2d8/0x4e0 [ 41.484191] ? security_context_to_sid_core+0xb2/0x610 [ 41.489491] kmemdup_nul+0x2d/0xa0 [ 41.493046] security_context_to_sid_core+0xb2/0x610 [ 41.498148] ? security_sid_to_context_core+0x440/0x440 [ 41.503532] ? __follow_mount_rcu+0x3d8/0x720 [ 41.508033] ? lock_acquire+0x170/0x3f0 [ 41.512014] ? kernfs_iop_permission+0x5f/0xb0 [ 41.516605] ? kernfs_iop_permission+0x5f/0xb0 [ 41.521198] security_context_to_sid+0x35/0x40 [ 41.525776] selinux_inode_setsecurity+0x197/0x3d0 [ 41.530706] ? selinux_secctx_to_secid+0x40/0x40 [ 41.535460] ? ww_mutex_unlock+0x2f0/0x2f0 [ 41.539684] ? lockref_get_not_dead+0x66/0x80 [ 41.544199] ? timespec64_trunc+0xf2/0x190 [ 41.548437] selinux_inode_notifysecctx+0x2b/0x60 [ 41.553320] security_inode_notifysecctx+0x50/0xb0 [ 41.558280] kernfs_refresh_inode+0x328/0x4b0 [ 41.562777] kernfs_iop_permission+0x6a/0xb0 [ 41.567266] ? kernfs_iop_getattr+0xd0/0xd0 [ 41.571605] inode_permission+0x34e/0x540 [ 41.575767] ? unlazy_walk+0x1f6/0x520 [ 41.582200] link_path_walk.part.0+0x952/0x1230 [ 41.586893] ? walk_component+0xda0/0xda0 [ 41.591038] ? percpu_counter_add_batch+0x126/0x180 [ 41.596068] path_openat+0x21d/0x2e90 [ 41.599870] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 41.605286] ? path_lookupat+0x8d0/0x8d0 [ 41.609365] ? mark_held_locks+0xf0/0xf0 [ 41.613551] ? find_held_lock+0x2d/0x110 [ 41.617637] do_filp_open+0x18c/0x3f0 [ 41.621454] ? may_open_dev+0xf0/0xf0 [ 41.625268] ? lock_downgrade+0x750/0x750 [ 41.629448] ? lock_acquire+0x170/0x3f0 [ 41.633453] ? do_raw_spin_unlock+0x171/0x240 [ 41.637962] ? _raw_spin_unlock+0x29/0x40 [ 41.642124] ? __alloc_fd+0x2ab/0x590 [ 41.645924] do_sys_open+0x3b3/0x520 [ 41.649650] ? filp_open+0x70/0x70 [ 41.653205] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 41.658579] ? trace_hardirqs_off_caller+0x6e/0x210 [ 41.663655] ? do_syscall_64+0x21/0x670 [ 41.667633] do_syscall_64+0xf9/0x670 [ 41.671457] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 41.676638] RIP: 0033:0x4011e0 [ 41.679819] Code: 01 f0 ff ff 0f 83 c0 0b 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 83 3d ed 34 2d 00 00 75 14 b8 02 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 94 0b 00 00 c3 48 83 ec 08 e8 fa 00 00 00 [ 41.698726] RSP: 002b:00007fffb68f17d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 executing program [ 41.706426] RAX: ffffffffffffffda RBX: 00007fffb68f1801 RCX: 00000000004011e0 [ 41.713695] RDX: 00007fffb68f1806 RSI: 0000000000080001 RDI: 00000000004a2668 [ 41.720965] RBP: 00007fffb68f1800 R08: 0000000000000000 R09: 0000000000000001 [ 41.728226] R10: 0000000000000032 R11: 0000000000000246 R12: 00000000004a2668 [ 41.735519] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 41.749080] FAULT_INJECTION: forcing a failure. [ 41.749080] name failslab, interval 1, probability 0, space 0, times 0 [ 41.760764] CPU: 1 PID: 6490 Comm: syz-executor873 Not tainted 4.19.149-syzkaller #0 [ 41.768687] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 41.778067] Call Trace: [ 41.780670] dump_stack+0x22c/0x33e [ 41.784316] should_fail.cold+0xa/0x2f [ 41.788253] ? lockdep_hardirqs_on+0x3c1/0x5e0 [ 41.792848] ? fault_create_debugfs_attr+0x1e0/0x1e0 [ 41.797991] ? _raw_spin_unlock_irqrestore+0x6a/0xf0 [ 41.803108] ? depot_save_stack+0x213/0x564 [ 41.807440] __should_failslab+0x153/0x1b6 [ 41.811759] should_failslab+0x5/0xf [ 41.815478] kmem_cache_alloc_node+0x54/0x4d0 [ 41.820071] __alloc_skb+0x71/0x580 [ 41.823719] skb_copy+0x139/0x300 [ 41.827185] tipc_buf_append+0x8b8/0xc30 [ 41.831254] ? tipc_msg_validate+0x520/0x520 [ 41.835765] ? __skb_clone+0x5ce/0x7c0 [ 41.839656] tipc_msg_reassemble+0x175/0x4f0 [ 41.844157] ? tipc_msg_build+0x1040/0x1040 [ 41.848491] ? lock_acquire+0x170/0x3f0 [ 41.852458] ? __might_fault+0xef/0x1d0 [ 41.856433] ? __lockdep_init_map+0x100/0x5c0 [ 41.860932] tipc_mcast_xmit+0x34d/0x950 [ 41.865026] ? __check_object_size+0x17b/0x3dd [ 41.869614] ? tipc_bcast_dec_bearer_dst_cnt+0x660/0x660 [ 41.875087] ? lock_downgrade+0x750/0x750 [ 41.879229] ? rcu_is_watching+0x7c/0x100 [ 41.883386] ? tipc_nametbl_lookup_dst_nodes+0x271/0x350 [ 41.888835] tipc_sendmcast+0xa90/0xc10 [ 41.892808] ? deref_stack_reg+0x134/0x1d0 [ 41.897045] ? tipc_send_group_bcast+0xa60/0xa60 [ 41.901795] ? __save_stack_trace+0x5c/0x100 [ 41.906187] ? deref_stack_reg+0x134/0x1d0 [ 41.910412] ? do_wait_intr_irq+0x340/0x340 [ 41.914720] ? check_usage_forwards+0x310/0x310 [ 41.919385] ? lock_downgrade+0x750/0x750 [ 41.923519] ? unwind_next_frame+0xefa/0x2430 [ 41.928025] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 41.933396] ? bpf_prog_kallsyms_find.part.0+0x1ad/0x270 [ 41.938855] __tipc_sendmsg+0xe82/0x1320 [ 41.942929] ? __save_stack_trace+0x99/0x100 [ 41.947340] ? tipc_sendmcast+0xc10/0xc10 [ 41.951497] ? mark_lock+0x6e9/0x13b0 [ 41.955289] ? check_usage_forwards+0x310/0x310 [ 41.959966] ? mark_held_locks+0xa6/0xf0 [ 41.964041] ? __local_bh_enable_ip+0x159/0x2a0 [ 41.968724] ? lockdep_hardirqs_on+0x3c1/0x5e0 [ 41.973318] tipc_sendmsg+0x4c/0x70 [ 41.976954] ? __tipc_sendmsg+0x1320/0x1320 [ 41.981568] sock_sendmsg+0xc7/0x130 [ 41.985278] ___sys_sendmsg+0x7bb/0x8f0 [ 41.989261] ? copy_msghdr_from_user+0x440/0x440 [ 41.994034] ? proc_fail_nth_write+0x95/0x1d0 [ 41.998565] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 42.003502] ? find_held_lock+0x2d/0x110 [ 42.007572] ? debug_check_no_obj_freed+0x201/0x482 [ 42.012599] ? __vfs_write+0xff/0x770 [ 42.016407] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 42.021336] ? kernel_read+0x110/0x110 [ 42.025236] ? find_held_lock+0x2d/0x110 [ 42.029296] ? vfs_write+0x3d7/0x540 [ 42.033004] ? __fget_light+0x1a2/0x230 [ 42.036974] __x64_sys_sendmsg+0x132/0x220 [ 42.041218] ? __sys_sendmsg+0x1b0/0x1b0 [ 42.045281] ? vfs_write+0x393/0x540 [ 42.048988] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 42.054369] ? trace_hardirqs_off_caller+0x6e/0x210 [ 42.059678] ? do_syscall_64+0x21/0x670 [ 42.063653] do_syscall_64+0xf9/0x670 [ 42.067447] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 42.072632] RIP: 0033:0x441339 [ 42.075829] Code: e8 5c ae 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 3b 0a fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 42.094740] RSP: 002b:00007fffb68f1ce8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 42.102449] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441339 [ 42.109725] RDX: 0000000000000000 RSI: 0000000020000380 RDI: 0000000000000004 [ 42.117016] RBP: 00000000006cd018 R08: 0000000000000001 R09: 00000000004002c8 [ 42.124281] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000402200 [ 42.131554] R13: 0000000000402290 R14: 0000000000000000 R15: 0000000000000000 [ 42.141311] Failed do clone local mcast rcv buffer [ 42.146450] ================================================================== [ 42.153991] BUG: KASAN: use-after-free in tipc_mcast_xmit+0x89f/0x950 [ 42.160606] Read of size 8 at addr ffff8880901faa80 by task syz-executor873/6490 [ 42.168139] [ 42.169777] CPU: 1 PID: 6490 Comm: syz-executor873 Not tainted 4.19.149-syzkaller #0 [ 42.177674] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 42.187043] Call Trace: [ 42.189632] dump_stack+0x22c/0x33e [ 42.193283] print_address_description.cold+0x56/0x25c [ 42.198561] kasan_report_error.cold+0x66/0xb9 [ 42.203138] ? tipc_mcast_xmit+0x89f/0x950 [ 42.207373] __asan_report_load8_noabort+0x88/0x90 [ 42.212324] ? tipc_mcast_xmit+0x89f/0x950 [ 42.216552] tipc_mcast_xmit+0x89f/0x950 [ 42.220606] ? __check_object_size+0x17b/0x3dd [ 42.225214] ? tipc_bcast_dec_bearer_dst_cnt+0x660/0x660 [ 42.230693] ? lock_downgrade+0x750/0x750 [ 42.234841] ? rcu_is_watching+0x7c/0x100 [ 42.238980] ? tipc_nametbl_lookup_dst_nodes+0x271/0x350 [ 42.244425] tipc_sendmcast+0xa90/0xc10 [ 42.248392] ? deref_stack_reg+0x134/0x1d0 [ 42.252626] ? tipc_send_group_bcast+0xa60/0xa60 [ 42.257385] ? __save_stack_trace+0x5c/0x100 [ 42.261807] ? deref_stack_reg+0x134/0x1d0 [ 42.266048] ? do_wait_intr_irq+0x340/0x340 [ 42.270356] ? check_usage_forwards+0x310/0x310 [ 42.275030] ? lock_downgrade+0x750/0x750 [ 42.279171] ? unwind_next_frame+0xefa/0x2430 [ 42.283658] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 42.289023] ? bpf_prog_kallsyms_find.part.0+0x1ad/0x270 [ 42.294478] __tipc_sendmsg+0xe82/0x1320 [ 42.298534] ? __save_stack_trace+0x99/0x100 [ 42.302930] ? tipc_sendmcast+0xc10/0xc10 [ 42.307168] ? mark_lock+0x6e9/0x13b0 [ 42.310964] ? check_usage_forwards+0x310/0x310 [ 42.315633] ? mark_held_locks+0xa6/0xf0 [ 42.319680] ? __local_bh_enable_ip+0x159/0x2a0 [ 42.324339] ? lockdep_hardirqs_on+0x3c1/0x5e0 [ 42.328905] tipc_sendmsg+0x4c/0x70 [ 42.332518] ? __tipc_sendmsg+0x1320/0x1320 [ 42.336828] sock_sendmsg+0xc7/0x130 [ 42.340540] ___sys_sendmsg+0x7bb/0x8f0 [ 42.344518] ? copy_msghdr_from_user+0x440/0x440 [ 42.349286] ? proc_fail_nth_write+0x95/0x1d0 [ 42.353769] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 42.358685] ? find_held_lock+0x2d/0x110 [ 42.362739] ? debug_check_no_obj_freed+0x201/0x482 [ 42.367747] ? __vfs_write+0xff/0x770 [ 42.371553] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 42.376496] ? kernel_read+0x110/0x110 [ 42.380375] ? find_held_lock+0x2d/0x110 [ 42.384438] ? vfs_write+0x3d7/0x540 [ 42.388145] ? __fget_light+0x1a2/0x230 [ 42.392107] __x64_sys_sendmsg+0x132/0x220 [ 42.396346] ? __sys_sendmsg+0x1b0/0x1b0 [ 42.400395] ? vfs_write+0x393/0x540 [ 42.404116] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 42.409475] ? trace_hardirqs_off_caller+0x6e/0x210 [ 42.414493] ? do_syscall_64+0x21/0x670 [ 42.418480] do_syscall_64+0xf9/0x670 [ 42.422277] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 42.427451] RIP: 0033:0x441339 [ 42.430632] Code: e8 5c ae 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 3b 0a fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 42.449561] RSP: 002b:00007fffb68f1ce8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 42.457288] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441339 [ 42.464569] RDX: 0000000000000000 RSI: 0000000020000380 RDI: 0000000000000004 [ 42.471826] RBP: 00000000006cd018 R08: 0000000000000001 R09: 00000000004002c8 [ 42.479968] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000402200 [ 42.487239] R13: 0000000000402290 R14: 0000000000000000 R15: 0000000000000000 [ 42.494504] [ 42.496144] Allocated by task 6490: [ 42.499777] kmem_cache_alloc_node+0x146/0x4d0 [ 42.504374] __alloc_skb+0x71/0x580 [ 42.507989] tipc_buf_acquire+0x28/0xf0 [ 42.511961] tipc_msg_build+0x686/0x1040 [ 42.516010] tipc_sendmcast+0x901/0xc10 [ 42.519967] __tipc_sendmsg+0xe82/0x1320 [ 42.524016] tipc_sendmsg+0x4c/0x70 [ 42.527630] sock_sendmsg+0xc7/0x130 [ 42.531337] ___sys_sendmsg+0x7bb/0x8f0 [ 42.535313] __x64_sys_sendmsg+0x132/0x220 [ 42.539538] do_syscall_64+0xf9/0x670 [ 42.543343] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 42.548520] [ 42.550163] Freed by task 6490: [ 42.553431] kmem_cache_free+0x7f/0x2b0 [ 42.557402] kfree_skbmem+0xa4/0x140 [ 42.561104] kfree_skb+0x127/0x3f0 [ 42.565065] tipc_buf_append+0x655/0xc30 [ 42.569158] tipc_msg_reassemble+0x175/0x4f0 [ 42.573557] tipc_mcast_xmit+0x34d/0x950 [ 42.577622] tipc_sendmcast+0xa90/0xc10 [ 42.581583] __tipc_sendmsg+0xe82/0x1320 [ 42.585641] tipc_sendmsg+0x4c/0x70 [ 42.589264] sock_sendmsg+0xc7/0x130 [ 42.592972] ___sys_sendmsg+0x7bb/0x8f0 [ 42.596929] __x64_sys_sendmsg+0x132/0x220 [ 42.601164] do_syscall_64+0xf9/0x670 [ 42.604962] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 42.610126] [ 42.611744] The buggy address belongs to the object at ffff8880901faa80 [ 42.611744] which belongs to the cache skbuff_fclone_cache of size 472 [ 42.625124] The buggy address is located 0 bytes inside of [ 42.625124] 472-byte region [ffff8880901faa80, ffff8880901fac58) [ 42.636832] The buggy address belongs to the page: [ 42.641780] page:ffffea0002407e80 count:1 mapcount:0 mapping:ffff88821b6af9c0 index:0x0 [ 42.649917] flags: 0xfffe0000000100(slab) [ 42.654076] raw: 00fffe0000000100 ffffea0002788008 ffff8880a9b5e448 ffff88821b6af9c0 [ 42.661949] raw: 0000000000000000 ffff8880901fa080 0000000100000006 0000000000000000 [ 42.669816] page dumped because: kasan: bad access detected [ 42.675549] [ 42.677195] Memory state around the buggy address: [ 42.682128] ffff8880901fa980: 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc fc [ 42.689497] ffff8880901faa00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 42.696850] >ffff8880901faa80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 42.704205] ^ [ 42.707567] ffff8880901fab00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 42.714915] ffff8880901fab80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 42.722270] ================================================================== [ 42.729634] Disabling lock debugging due to kernel taint [ 42.735567] Kernel panic - not syncing: panic_on_warn set ... [ 42.735567] [ 42.742959] CPU: 1 PID: 6490 Comm: syz-executor873 Tainted: G B 4.19.149-syzkaller #0 [ 42.752232] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 42.761674] Call Trace: [ 42.764267] dump_stack+0x22c/0x33e [ 42.767905] panic+0x2ac/0x565 [ 42.771099] ? __warn_printk+0xf3/0xf3 [ 42.774994] ? preempt_schedule_common+0x45/0xc0 [ 42.779759] ? ___preempt_schedule+0x16/0x18 [ 42.784194] ? trace_hardirqs_on+0x55/0x210 [ 42.788527] kasan_end_report+0x43/0x49 [ 42.792503] kasan_report_error.cold+0x83/0xb9 [ 42.797068] ? tipc_mcast_xmit+0x89f/0x950 [ 42.801294] __asan_report_load8_noabort+0x88/0x90 [ 42.806213] ? tipc_mcast_xmit+0x89f/0x950 [ 42.810443] tipc_mcast_xmit+0x89f/0x950 [ 42.814492] ? __check_object_size+0x17b/0x3dd [ 42.819062] ? tipc_bcast_dec_bearer_dst_cnt+0x660/0x660 [ 42.824505] ? lock_downgrade+0x750/0x750 [ 42.828641] ? rcu_is_watching+0x7c/0x100 [ 42.832777] ? tipc_nametbl_lookup_dst_nodes+0x271/0x350 [ 42.838232] tipc_sendmcast+0xa90/0xc10 [ 42.842214] ? deref_stack_reg+0x134/0x1d0 [ 42.846457] ? tipc_send_group_bcast+0xa60/0xa60 [ 42.851222] ? __save_stack_trace+0x5c/0x100 [ 42.855623] ? deref_stack_reg+0x134/0x1d0 [ 42.859855] ? do_wait_intr_irq+0x340/0x340 [ 42.864166] ? check_usage_forwards+0x310/0x310 [ 42.868850] ? lock_downgrade+0x750/0x750 [ 42.872990] ? unwind_next_frame+0xefa/0x2430 [ 42.877488] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 42.883196] ? bpf_prog_kallsyms_find.part.0+0x1ad/0x270 [ 42.888923] __tipc_sendmsg+0xe82/0x1320 [ 42.892997] ? __save_stack_trace+0x99/0x100 [ 42.897396] ? tipc_sendmcast+0xc10/0xc10 [ 42.901540] ? mark_lock+0x6e9/0x13b0 [ 42.905333] ? check_usage_forwards+0x310/0x310 [ 42.910011] ? mark_held_locks+0xa6/0xf0 [ 42.914062] ? __local_bh_enable_ip+0x159/0x2a0 [ 42.918720] ? lockdep_hardirqs_on+0x3c1/0x5e0 [ 42.923293] tipc_sendmsg+0x4c/0x70 [ 42.926920] ? __tipc_sendmsg+0x1320/0x1320 [ 42.931230] sock_sendmsg+0xc7/0x130 [ 42.934933] ___sys_sendmsg+0x7bb/0x8f0 [ 42.938898] ? copy_msghdr_from_user+0x440/0x440 [ 42.943668] ? proc_fail_nth_write+0x95/0x1d0 [ 42.948167] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 42.953090] ? find_held_lock+0x2d/0x110 [ 42.957142] ? debug_check_no_obj_freed+0x201/0x482 [ 42.962175] ? __vfs_write+0xff/0x770 [ 42.965968] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 42.970890] ? kernel_read+0x110/0x110 [ 42.974767] ? find_held_lock+0x2d/0x110 [ 42.978824] ? vfs_write+0x3d7/0x540 [ 42.982541] ? __fget_light+0x1a2/0x230 [ 42.986519] __x64_sys_sendmsg+0x132/0x220 [ 42.990763] ? __sys_sendmsg+0x1b0/0x1b0 [ 42.994811] ? vfs_write+0x393/0x540 [ 42.998566] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 43.003924] ? trace_hardirqs_off_caller+0x6e/0x210 [ 43.008932] ? do_syscall_64+0x21/0x670 [ 43.012899] do_syscall_64+0xf9/0x670 [ 43.016700] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 43.021877] RIP: 0033:0x441339 [ 43.025053] Code: e8 5c ae 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 3b 0a fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 43.043940] RSP: 002b:00007fffb68f1ce8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 43.051653] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441339 [ 43.058923] RDX: 0000000000000000 RSI: 0000000020000380 RDI: 0000000000000004 [ 43.066192] RBP: 00000000006cd018 R08: 0000000000000001 R09: 00000000004002c8 [ 43.073460] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000402200 [ 43.080739] R13: 0000000000402290 R14: 0000000000000000 R15: 0000000000000000 [ 43.089206] Kernel Offset: disabled [ 43.092831] Rebooting in 86400 seconds..