[....] Starting enhanced syslogd: rsyslogd[ 11.896858] audit: type=1400 audit(1513795508.401:5): 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 mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] 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: [ 17.520425] audit: type=1400 audit(1513795514.025:6): avc: denied { map } for pid=3135 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 'ci-upstream-kasan-gce-386-3,10.128.15.203' (ECDSA) to the list of known hosts. [ 24.556722] audit: type=1400 audit(1513795521.061:7): avc: denied { map } for pid=3150 comm="syz-execprog" path="/root/syz-execprog" dev="sda1" ino=16479 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 2017/12/20 18:45:21 parsed 1 programs 2017/12/20 18:45:21 executed programs: 0 [ 24.656236] audit: type=1400 audit(1513795521.161:8): avc: denied { map } for pid=3150 comm="syz-execprog" path="/root/syzkaller-shm522613597" dev="sda1" ino=16482 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:file_t:s0 tclass=file permissive=1 [ 24.740191] kvm: KVM_SET_TSS_ADDR need to be called before entering vcpu [ 24.780381] kasan: CONFIG_KASAN_INLINE enabled [ 24.784981] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 24.792319] general protection fault: 0000 [#1] SMP KASAN [ 24.797822] Dumping ftrace buffer: [ 24.801327] (ftrace buffer empty) [ 24.805004] Modules linked in: [ 24.808162] CPU: 0 PID: 3130 Comm: udevd Not tainted 4.15.0-rc4+ #140 [ 24.814702] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 24.824039] RIP: 0010:native_write_cr4+0x4/0x10 [ 24.828674] RSP: 0018:ffff8801db407ca8 EFLAGS: 00010006 [ 24.834000] RAX: ffff8801cbef8280 RBX: 00000000001606f0 RCX: ffffffff811a2c72 [ 24.841235] RDX: 0000000000010000 RSI: 0000000000000000 RDI: 00000000001606f0 [ 24.848471] RBP: ffff8801db407ca8 R08: 1ffff100396b6e18 R09: 0000000000000000 [ 24.855705] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000006 [ 24.862954] R13: ffff8801cbef8280 R14: ffff8801db415850 R15: ffff8801db415850 [ 24.870191] FS: 00007f48bddc87a0(0000) GS:ffff8801db400000(0000) knlGS:0000000000000000 [ 24.878382] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 24.884227] CR2: 00007f48bddcf000 CR3: 00000001cb6f0005 CR4: 00000000001626f0 [ 24.891463] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 24.898699] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 24.905935] Call Trace: [ 24.908480] [ 24.910602] hardware_disable+0x34a/0x4b0 [ 24.914718] ? irq_work_sync+0x1a0/0x1a0 [ 24.918745] ? lock_downgrade+0x980/0x980 [ 24.922861] ? kvm_io_bus_get_dev+0x2a0/0x2a0 [ 24.927320] kvm_arch_hardware_disable+0x35/0xd0 [ 24.932040] hardware_disable_nolock+0x30/0x40 [ 24.936587] flush_smp_call_function_queue+0x1f4/0x570 [ 24.941828] ? cpumask_weight+0x40/0x40 [ 24.945769] ? tick_program_event+0x83/0x100 [ 24.950143] ? __lock_is_held+0xb6/0x140 [ 24.954174] generic_smp_call_function_single_interrupt+0x13/0x30 [ 24.960371] smp_call_function_single_interrupt+0x103/0x640 [ 24.966049] ? smp_call_function_interrupt+0x640/0x640 [ 24.971288] ? _raw_spin_lock+0x32/0x40 [ 24.975225] ? _raw_spin_unlock+0x22/0x30 [ 24.979338] ? handle_edge_irq+0x2b4/0x7c0 [ 24.983537] ? task_prio+0x40/0x40 [ 24.987046] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 24.992278] call_function_single_interrupt+0xa9/0xb0 [ 24.997430] [ 24.999635] RIP: 0010:qlist_free_all+0xa9/0x160 [ 25.004270] RSP: 0018:ffff8801cb5b7250 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff04 [ 25.011942] RAX: 0000000000000007 RBX: 0000000000000282 RCX: 0000000000000006 [ 25.019177] RDX: 0000000000000000 RSI: ffff8801cbef8b48 RDI: 0000000000000282 [ 25.026444] RBP: ffff8801cb5b7288 R08: 1ffff100396b6e18 R09: 0000000000000000 [ 25.033680] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 25.040913] R13: ffff8801db229600 R14: ffff8801cd042a80 R15: ffffffff85ec8220 [ 25.048161] quarantine_reduce+0x141/0x170 [ 25.052360] kasan_kmalloc+0xca/0xe0 [ 25.056040] kasan_slab_alloc+0x12/0x20 [ 25.059979] kmem_cache_alloc+0x11b/0x760 [ 25.064096] ? __might_sleep+0x95/0x190 [ 25.068050] __anon_vma_prepare+0xbc/0x6b0 [ 25.072249] ? anon_vma_fork+0x870/0x870 [ 25.076275] ? find_held_lock+0x35/0x1d0 [ 25.080300] ? check_noncircular+0x20/0x20 [ 25.084502] __handle_mm_fault+0x2c70/0x3ce0 [ 25.088877] ? __pmd_alloc+0x4e0/0x4e0 [ 25.092733] ? find_held_lock+0x35/0x1d0 [ 25.096761] ? handle_mm_fault+0x248/0x8d0 [ 25.100961] ? lock_downgrade+0x980/0x980 [ 25.105084] handle_mm_fault+0x334/0x8d0 [ 25.109109] ? memset+0x31/0x40 [ 25.112360] ? __handle_mm_fault+0x3ce0/0x3ce0 [ 25.116908] ? vmacache_find+0x5f/0x280 [ 25.120844] ? vmacache_update+0xfe/0x130 [ 25.124958] ? find_vma+0x30/0x150 [ 25.128466] __do_page_fault+0x5c9/0xc90 [ 25.132498] ? mm_fault_error+0x2c0/0x2c0 [ 25.136608] ? check_noncircular+0x20/0x20 [ 25.140817] do_page_fault+0xee/0x720 [ 25.144583] ? __do_page_fault+0xc90/0xc90 [ 25.148792] ? find_held_lock+0x35/0x1d0 [ 25.152820] ? __might_fault+0x110/0x1d0 [ 25.156849] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 25.161662] page_fault+0x2c/0x60 [ 25.165081] RIP: 0010:copy_user_generic_unrolled+0x89/0xc0 [ 25.170683] RSP: 0018:ffff8801cb5b7a60 EFLAGS: 00010207 [ 25.176011] RAX: ffffed0039345d1c RBX: 000000000000001f RCX: 0000000000000003 [ 25.183247] RDX: 0000000000000007 RSI: ffff8801c9a2e8c0 RDI: 00007f48bddcf000 [ 25.190483] RBP: ffff8801cb5b7a90 R08: 30313d524f4a414d R09: ffffed0039345d1c [ 25.197718] R10: 0000000000000004 R11: ffffed0039345d1b R12: 00007f48bddcf000 [ 25.204953] R13: ffff8801c9a2e8c0 R14: 00007ffffffff000 R15: 00007f48bddcf01f [ 25.212202] ? _copy_to_user+0x9b/0xc0 [ 25.216056] seq_read+0xcb4/0x13d0 [ 25.219566] ? seq_lseek+0x3c0/0x3c0 [ 25.223248] ? vm_mmap_pgoff+0x1ed/0x280 [ 25.227275] ? lock_downgrade+0x980/0x980 [ 25.231391] kernfs_fop_read+0x455/0x610 [ 25.235422] ? kernfs_vma_page_mkwrite+0x220/0x220 [ 25.240318] ? kernfs_vma_page_mkwrite+0x220/0x220 [ 25.245209] __vfs_read+0xef/0xa00 [ 25.248713] ? fsnotify+0x7b3/0x1140 [ 25.252393] ? vfs_copy_file_range+0x940/0x940 [ 25.256941] ? fsnotify_first_mark+0x2b0/0x2b0 [ 25.261491] ? avc_policy_seqno+0x9/0x20 [ 25.265513] ? selinux_file_permission+0x82/0x460 [ 25.270323] ? security_file_permission+0x89/0x1e0 [ 25.275219] ? rw_verify_area+0xe5/0x2b0 [ 25.279247] ? __fdget_raw+0x20/0x20 [ 25.282926] vfs_read+0x11e/0x350 [ 25.286371] SyS_read+0xef/0x220 [ 25.289712] ? kernel_write+0x120/0x120 [ 25.293652] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 25.298636] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 25.303362] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 25.308082] RIP: 0033:0x7f48bd4d0310 [ 25.311763] RSP: 002b:00007ffccedcbab8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 [ 25.319704] RAX: ffffffffffffffda RBX: 0000000000b6bc70 RCX: 00007f48bd4d0310 [ 25.326940] RDX: 0000000000001000 RSI: 00007f48bddcf000 RDI: 0000000000000005 [ 25.334176] RBP: 0000000000b6bc70 R08: 00000000ffffffff R09: 0000000000000000 [ 25.341418] R10: 0000000000000022 R11: 0000000000000246 R12: 0000000000b54a00 [ 25.348655] R13: 0000000000625500 R14: 0000000000b1c030 R15: 000000000000000b [ 25.355899] 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 [ 25.374966] RIP: native_write_cr4+0x4/0x10 RSP: ffff8801db407ca8 [ 25.381081] ---[ end trace 991e247232f26d31 ]--- [ 25.385799] Kernel panic - not syncing: Fatal exception in interrupt [ 25.392287] Dumping ftrace buffer: [ 25.395797] (ftrace buffer empty) [ 25.399473] Kernel Offset: disabled [ 25.403065] Rebooting in 86400 seconds..