[....] Starting enhanced syslogd: rsyslogd[ 12.398204] audit: type=1400 audit(1515894373.790:5): avc: denied { syslog } for pid=3508 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: [ 21.678956] audit: type=1400 audit(1515894383.070:6): avc: denied { map } for pid=3649 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 '10.128.0.13' (ECDSA) to the list of known hosts. net.ipv6.conf.syz0.accept_dad = 0 net.ipv6.conf.syz0.router_solicitations = 0 [ 28.010674] audit: type=1400 audit(1515894389.402:7): avc: denied { map } for pid=3663 comm="syzkaller676198" path="/root/syzkaller676198834" 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 RTNETLINK answers: Operation not supported RTNETLINK answers: No buffer space available RTNETLINK answers: Operation not supported [ 28.231709] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready 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 executing program [ 28.569098] kvm: KVM_SET_TSS_ADDR need to be called before entering vcpu [ 28.603602] kasan: CONFIG_KASAN_INLINE enabled [ 28.608218] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 28.615586] general protection fault: 0000 [#1] SMP KASAN [ 28.621092] Dumping ftrace buffer: [ 28.624608] (ftrace buffer empty) [ 28.628292] Modules linked in: [ 28.631455] CPU: 0 PID: 3642 Comm: udevd Not tainted 4.15.0-rc7-next-20180112+ #96 [ 28.639129] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 28.648461] RIP: 0010:native_write_cr4+0x4/0x10 [ 28.653093] RSP: 0018:ffff8801db207ca8 EFLAGS: 00010006 [ 28.658422] RAX: ffff8801bccf4300 RBX: 00000000001606f0 RCX: ffffffff811a4b82 [ 28.665664] RDX: 0000000000010000 RSI: 0000000000000000 RDI: 00000000001606f0 [ 28.672899] RBP: ffff8801db207ca8 R08: 000060fe24a02930 R09: ffffed003acdae62 [ 28.680136] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000006 [ 28.687372] R13: ffff8801bccf4300 R14: ffff8801db21d130 R15: ffff8801db21d130 [ 28.694610] FS: 00007f13b97b17a0(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 28.702802] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 28.708648] CR2: 00007f13b97b8000 CR3: 00000001be364006 CR4: 00000000001626f0 [ 28.715888] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 28.723123] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 28.730358] Call Trace: [ 28.732908] [ 28.735033] hardware_disable+0x34a/0x4b0 [ 28.739146] ? irq_work_sync+0x1a0/0x1a0 [ 28.743174] ? lock_downgrade+0x980/0x980 [ 28.747291] ? kvm_io_bus_get_dev+0x2a0/0x2a0 [ 28.751753] kvm_arch_hardware_disable+0x35/0xd0 [ 28.756476] hardware_disable_nolock+0x30/0x40 [ 28.761026] flush_smp_call_function_queue+0x1f4/0x570 [ 28.766270] ? cpumask_weight+0x40/0x40 [ 28.770215] ? rcu_idle_exit+0x410/0x410 [ 28.774253] ? rcu_pm_notify+0xc0/0xc0 [ 28.778117] generic_smp_call_function_single_interrupt+0x13/0x30 [ 28.784318] smp_call_function_single_interrupt+0x103/0x640 [ 28.789997] ? smp_call_function_interrupt+0x640/0x640 [ 28.795245] ? _raw_spin_lock+0x32/0x40 [ 28.799189] ? _raw_spin_unlock+0x22/0x30 [ 28.803303] ? handle_edge_irq+0x2b4/0x7c0 [ 28.807507] ? task_prio+0x40/0x40 [ 28.811025] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 28.815838] call_function_single_interrupt+0xa9/0xb0 [ 28.820991] [ 28.823202] RIP: 0010:memset_erms+0xb/0x10 [ 28.827400] RSP: 0018:ffff8801bcc87848 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff04 [ 28.835075] RAX: 1ffff1003acdaefc RBX: 1ffff1003acdae62 RCX: 0000000000000000 [ 28.842316] RDX: 0000000000000000 RSI: 00000000000000fc RDI: ffffed003acdae62 [ 28.849557] RBP: ffff8801bcc87880 R08: 000060fe24a02930 R09: ffffed003acdae62 [ 28.856795] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8801d66d7300 [ 28.864032] R13: 00000000014080c0 R14: ffff8801d66d7310 R15: ffff8801dae270c0 [ 28.871287] ? kasan_kmalloc+0x81/0xe0 [ 28.875144] kasan_slab_alloc+0x12/0x20 [ 28.879084] kmem_cache_alloc+0x11b/0x760 [ 28.883203] ? rcu_read_lock_sched_held+0x108/0x120 [ 28.888188] selinux_file_alloc_security+0xae/0x190 [ 28.893177] security_file_alloc+0x6d/0xa0 [ 28.897379] get_empty_filp+0x189/0x4f0 [ 28.901321] ? proc_nr_files+0x60/0x60 [ 28.905176] ? check_noncircular+0x20/0x20 [ 28.909385] ? __lock_is_held+0xb6/0x140 [ 28.913416] ? unwind_get_return_address+0x61/0xa0 [ 28.918315] path_openat+0xed/0x3530 [ 28.922015] ? path_lookupat+0xba0/0xba0 [ 28.926046] ? lock_downgrade+0x980/0x980 [ 28.930160] ? do_sys_open+0x2e7/0x6d0 [ 28.934016] ? lock_release+0xa40/0xa40 [ 28.937959] ? find_held_lock+0x35/0x1d0 [ 28.941987] ? do_raw_spin_trylock+0x190/0x190 [ 28.946538] ? __lock_is_held+0xb6/0x140 [ 28.950573] ? _raw_spin_unlock+0x22/0x30 [ 28.954687] ? __alloc_fd+0x29b/0x750 [ 28.958461] do_filp_open+0x25b/0x3b0 [ 28.962229] ? may_open_dev+0xe0/0xe0 [ 28.966000] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 28.970991] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 28.975721] ? retint_kernel+0x10/0x10 [ 28.979581] ? do_sys_open+0x4f1/0x6d0 [ 28.983438] do_sys_open+0x502/0x6d0 [ 28.987116] ? do_sys_open+0x502/0x6d0 [ 28.990975] ? filp_open+0x70/0x70 [ 28.994485] ? entry_SYSCALL_64_fastpath+0x5/0xa0 [ 28.999295] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 29.004282] SyS_open+0x2d/0x40 [ 29.008255] entry_SYSCALL_64_fastpath+0x29/0xa0 [ 29.012978] RIP: 0033:0x7f13b8eb9120 [ 29.016660] RSP: 002b:00007ffe13a22f98 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 29.024333] RAX: ffffffffffffffda RBX: 00007ffe13a22d50 RCX: 00007f13b8eb9120 [ 29.031569] RDX: 00007ffe13a22fb0 RSI: 0000000000000002 RDI: 00007ffe13a22fa0 [ 29.038812] RBP: 00007ffe13a22d40 R08: 0000000000000008 R09: 0000000001a84010 [ 29.046057] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 29.053304] R13: 00007ffe13a22ec0 R14: 00007f13b9392e00 R15: ffffffffffffff00 [ 29.060549] 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 [ 29.079637] RIP: native_write_cr4+0x4/0x10 RSP: ffff8801db207ca8 [ 29.085752] ---[ end trace 874a7cffceb5a6a2 ]--- [ 29.090473] Kernel panic - not syncing: Fatal exception in interrupt [ 29.097341] Dumping ftrace buffer: [ 29.100847] (ftrace buffer empty) [ 29.104521] Kernel Offset: disabled [ 29.108120] Rebooting in 86400 seconds..