[....] Starting enhanced syslogd: rsyslogd[ 11.691572] audit: type=1400 audit(1514832661.086:5): avc: denied { syslog } for pid=2996 comm="rsyslogd" capability=34 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=capability2 permissive=1 [?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 17.038717] audit: type=1400 audit(1514832666.433:6): avc: denied { map } for pid=3134 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 Warning: Permanently added '10.128.15.201' (ECDSA) to the list of known hosts. [ 23.271396] audit: type=1400 audit(1514832672.666:7): avc: denied { map } for pid=3148 comm="syzkaller001762" path="/root/syzkaller001762057" dev="sda1" ino=16481 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 net.ipv6.conf.syz5.accept_dad = 0 net.ipv6.conf.syz7.accept_dad = 0 net.ipv6.conf.syz1.accept_dad = 0 net.ipv6.conf.syz3.accept_dad = 0 net.ipv6.conf.syz6.accept_dad = 0 net.ipv6.conf.syz2.accept_dad = 0 net.ipv6.conf.syz0.accept_dad = 0 net.ipv6.conf.syz4.accept_dad = 0 net.ipv6.conf.syz7.router_solicitations = 0 net.ipv6.conf.syz1.router_solicitations = 0 net.ipv6.conf.syz5.router_solicitations = 0 net.ipv6.conf.syz6.router_solicitations = 0 net.ipv6.conf.syz3.router_solicitations = 0 net.ipv6.conf.syz4.router_solicitations = 0 net.ipv6.conf.syz0.router_solicitations = 0 net.ipv6.conf.syz2.router_solicitations = 0 executing program executing program executing program executing program executing program executing program executing program executing program [ 24.214984] kvm: KVM_SET_TSS_ADDR need to be called before entering vcpu executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 29.248716] kasan: CONFIG_KASAN_INLINE enabled [ 29.253347] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 29.260679] general protection fault: 0000 [#1] SMP KASAN [ 29.266181] Dumping ftrace buffer: [ 29.269688] (ftrace buffer empty) [ 29.273365] Modules linked in: [ 29.276529] CPU: 0 PID: 3129 Comm: udevd Not tainted 4.15.0-rc4-mm1+ #49 [ 29.283331] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 29.292662] RIP: 0010:native_write_cr4+0x4/0x10 [ 29.297295] RSP: 0018:ffff8801db207ca8 EFLAGS: 00010006 [ 29.302627] RAX: ffff8801cacbe300 RBX: 00000000001606f0 RCX: ffffffff811a4922 [ 29.309865] RDX: 0000000000010000 RSI: 0000000000000000 RDI: 00000000001606f0 [ 29.317105] RBP: ffff8801db207ca8 R08: ffffed003958ff3b R09: ffff8801cac7f990 [ 29.324343] R10: 0000000000000009 R11: ffffed003958ff3a R12: 0000000000000006 [ 29.331582] R13: ffff8801cacbe300 R14: ffff8801db21a130 R15: ffff8801db21a130 [ 29.338909] FS: 00007facb582b7a0(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 29.347103] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 29.352953] CR2: 00007f778c3d9db8 CR3: 00000001cb99e001 CR4: 00000000001626f0 [ 29.360193] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 29.367431] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 29.374668] Call Trace: [ 29.377217] [ 29.379342] hardware_disable+0x34a/0x4b0 [ 29.383461] ? irq_work_sync+0x1a0/0x1a0 [ 29.387494] ? kvm_io_bus_get_dev+0x2a0/0x2a0 [ 29.391967] kvm_arch_hardware_disable+0x35/0xd0 [ 29.396690] hardware_disable_nolock+0x30/0x40 [ 29.401242] flush_smp_call_function_queue+0x1f4/0x570 [ 29.406504] ? cpumask_weight+0x40/0x40 [ 29.410448] ? __local_bh_enable+0x10b/0x130 [ 29.414828] ? rcu_idle_exit+0x410/0x410 [ 29.418858] ? __do_softirq+0x7a0/0xb85 [ 29.422805] ? __lock_is_held+0xb6/0x140 [ 29.426841] generic_smp_call_function_single_interrupt+0x13/0x30 [ 29.433052] smp_call_function_single_interrupt+0x103/0x640 [ 29.438734] ? smp_call_function_interrupt+0x640/0x640 [ 29.443996] ? _raw_spin_lock+0x32/0x40 [ 29.447954] ? _raw_spin_unlock+0x22/0x30 [ 29.452068] ? handle_edge_irq+0x2b4/0x7c0 [ 29.456271] ? task_prio+0x40/0x40 [ 29.459792] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 29.464607] call_function_single_interrupt+0xa9/0xb0 [ 29.469774] [ 29.471983] RIP: 0010:strlen+0x60/0xa0 [ 29.475836] RSP: 0018:ffff8801cac7f7d0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff04 [ 29.483522] RAX: ffff8801d8af7602 RBX: dffffc0000000000 RCX: 0000000000000002 [ 29.490759] RDX: 0000000000000000 RSI: ffff8801d8af7600 RDI: ffff8801d8af7600 [ 29.498010] RBP: ffff8801cac7f7e8 R08: ffffed003958ff3b R09: ffff8801cac7f990 [ 29.505252] R10: 0000000000000009 R11: ffffed003958ff3a R12: ffff8801d8af7600 [ 29.512491] R13: ffff8801d8af7600 R14: ffff8801d8af7600 R15: ffff8801d2d54840 [ 29.519748] symhash+0x20/0xc0 [ 29.522910] hashtab_search+0x55/0x220 [ 29.526767] string_to_context_struct+0x364/0xa50 [ 29.531576] ? rcu_read_lock_sched_held+0x108/0x120 [ 29.536575] ? security_load_policycaps+0x340/0x340 [ 29.541578] security_context_to_sid_core+0x499/0x5a0 [ 29.546737] ? security_compute_validatetrans.part.6+0x7d0/0x7d0 [ 29.552850] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 29.558709] ? __might_sleep+0x95/0x190 [ 29.562657] security_context_to_sid+0x32/0x40 [ 29.567209] selinux_inode_setxattr+0x3a2/0xa60 [ 29.571858] ? selinux_inode_getsecctx+0x80/0x80 [ 29.576588] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 29.582444] ? rcu_note_context_switch+0x710/0x710 [ 29.587342] ? __might_sleep+0x95/0x190 [ 29.591287] ? down_write+0x87/0x120 [ 29.594968] ? vfs_setxattr+0x8b/0xe0 [ 29.598739] security_inode_setxattr+0xf3/0x170 [ 29.603379] vfs_setxattr+0xa0/0xe0 [ 29.606974] setxattr+0x319/0x400 [ 29.610397] ? vfs_setxattr+0xe0/0xe0 [ 29.614165] ? lock_acquire+0x1d5/0x580 [ 29.618107] ? lock_acquire+0x1d5/0x580 [ 29.622049] ? mnt_want_write+0x3f/0xb0 [ 29.625995] ? __lock_is_held+0xb6/0x140 [ 29.630029] ? __mnt_want_write+0x25c/0x370 [ 29.634319] ? do_umount+0xda0/0xda0 [ 29.638013] ? rcu_sync_lockdep_assert+0x6d/0xb0 [ 29.642738] ? __sb_start_write+0x209/0x2a0 [ 29.647034] path_setxattr+0x198/0x1e0 [ 29.650892] ? setxattr+0x400/0x400 [ 29.654491] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 29.659477] SyS_lsetxattr+0x38/0x50 [ 29.663161] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 29.667884] RIP: 0033:0x7facb4f3dffa [ 29.671563] RSP: 002b:00007ffc5fb94f78 EFLAGS: 00000206 ORIG_RAX: 00000000000000bd [ 29.679238] RAX: ffffffffffffffda RBX: 0000000001ca0f80 RCX: 00007facb4f3dffa [ 29.686476] RDX: 0000000001b606a0 RSI: 00007facb540cf69 RDI: 00007ffc5fb959d0 [ 29.693713] RBP: 0000000000000005 R08: 0000000000000000 R09: 0000000000001fff [ 29.700951] R10: 000000000000001e R11: 0000000000000206 R12: 0000000000001000 [ 29.708189] R13: 0000000001b2fc80 R14: 00007ffc5fb93ec8 R15: 0000000000000000 [ 29.715437] Code: 0f 1f 80 00 00 00 00 55 48 89 e5 0f 20 d8 5d c3 0f 1f 80 00 00 00 00 55 48 89 e5 0f 22 df 5d c3 0f 1f 80 00 00 00 00 55 48 89 e5 <0f> 22 e7 5d c3 0f 1f 80 00 00 00 00 55 48 89 e5 44 0f 20 c0 5d [ 29.734536] RIP: native_write_cr4+0x4/0x10 RSP: ffff8801db207ca8 [ 29.740655] ---[ end trace 9afac15683f8a878 ]--- [ 29.745376] Kernel panic - not syncing: Fatal exception in interrupt [ 29.751876] Dumping ftrace buffer: [ 29.755386] (ftrace buffer empty) [ 29.759062] Kernel Offset: disabled [ 29.762658] Rebooting in 86400 seconds..