[....] Starting enhanced syslogd: rsyslogd[ 10.038269] audit: type=1400 audit(1513461649.796:5): avc: denied { syslog } for pid=2983 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: [ 13.247160] audit: type=1400 audit(1513461653.004:6): avc: denied { map } for pid=3122 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-2,10.128.0.39' (ECDSA) to the list of known hosts. executing program executing program [ 19.415690] audit: type=1400 audit(1513461659.173:7): avc: denied { map } for pid=3136 comm="syzkaller414317" path="/root/syzkaller414317965" 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 executing program [ 19.464553] kvm: KVM_SET_TSS_ADDR need to be called before entering vcpu executing program executing program executing program [ 19.862597] kasan: CONFIG_KASAN_INLINE enabled [ 19.867201] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 19.874531] general protection fault: 0000 [#1] SMP KASAN [ 19.880035] Dumping ftrace buffer: [ 19.883542] (ftrace buffer empty) [ 19.887219] Modules linked in: [ 19.890382] CPU: 0 PID: 3118 Comm: udevd Not tainted 4.15.0-rc3+ #224 [ 19.896922] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 19.906247] RIP: 0010:native_write_cr4+0x4/0x10 [ 19.910879] RSP: 0018:ffff8801db407ca8 EFLAGS: 00010006 [ 19.916208] RAX: ffff8801ccec4640 RBX: 00000000001606f0 RCX: ffffffff811a2a92 [ 19.923452] RDX: 0000000000010000 RSI: 0000000000000000 RDI: 00000000001606f0 [ 19.930686] RBP: ffff8801db407ca8 R08: 0000000000000000 R09: 0000000000000000 [ 19.937920] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000006 [ 19.945157] R13: ffff8801ccec4640 R14: ffff8801db414850 R15: ffff8801db414850 [ 19.952394] FS: 00007fc621ec27a0(0000) GS:ffff8801db400000(0000) knlGS:0000000000000000 [ 19.960585] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 19.966432] CR2: 00007fc621ec9000 CR3: 00000001cec6e002 CR4: 00000000001626f0 [ 19.973669] Call Trace: [ 19.976220] [ 19.978341] hardware_disable+0x34a/0x4b0 [ 19.982456] ? irq_work_sync+0x1a0/0x1a0 [ 19.986482] ? lock_downgrade+0x980/0x980 [ 19.990600] ? kvm_io_bus_get_dev+0x2a0/0x2a0 [ 19.995063] kvm_arch_hardware_disable+0x35/0xd0 [ 19.999784] hardware_disable_nolock+0x30/0x40 [ 20.004333] flush_smp_call_function_queue+0x1f4/0x570 [ 20.009579] ? cpumask_weight+0x40/0x40 [ 20.013519] ? tick_program_event+0x83/0x100 [ 20.017895] ? rcu_pm_notify+0xc0/0xc0 [ 20.021754] generic_smp_call_function_single_interrupt+0x13/0x30 [ 20.027956] smp_call_function_single_interrupt+0x103/0x640 [ 20.033635] ? smp_call_function_interrupt+0x640/0x640 [ 20.038878] ? _raw_spin_lock+0x32/0x40 [ 20.042820] ? handle_edge_irq+0x2b4/0x7c0 [ 20.047024] ? task_prio+0x40/0x40 [ 20.050540] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 20.055354] call_function_single_interrupt+0x9d/0xb0 [ 20.060505] [ 20.062713] RIP: 0010:kmem_cache_alloc+0x22b/0x760 [ 20.067603] RSP: 0018:ffff8801cb03fc78 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff04 [ 20.075363] RAX: 0000000000000007 RBX: 00000000014000c0 RCX: 0000000000000000 [ 20.082599] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000282 [ 20.089837] RBP: ffff8801cb03fce8 R08: 0000000000000000 R09: 0000000000000000 [ 20.097072] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8801c5a8e4c0 [ 20.104308] R13: ffff8801db21a780 R14: ffff8801db21a780 R15: 00000000014000c0 [ 20.111568] getname_flags+0xcb/0x580 [ 20.115346] user_path_at_empty+0x2d/0x50 [ 20.119464] vfs_statx+0xe9/0x190 [ 20.122886] ? vfs_statx_fd+0x90/0x90 [ 20.126651] ? rcu_read_lock_sched_held+0x108/0x120 [ 20.131631] ? kmem_cache_free+0x249/0x280 [ 20.135837] SYSC_newlstat+0x87/0xf0 [ 20.139516] ? SYSC_newstat+0xf0/0xf0 [ 20.143285] ? vm_munmap+0x126/0x180 [ 20.146966] ? entry_SYSCALL_64_fastpath+0x5/0x96 [ 20.151776] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 20.156759] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 20.161487] SyS_newlstat+0x1d/0x30 [ 20.165081] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 20.169799] RIP: 0033:0x7fc6215c9d05 [ 20.173475] RSP: 002b:00007ffc56abe548 EFLAGS: 00000246 ORIG_RAX: 0000000000000006 [ 20.181145] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fc6215c9d05 [ 20.188379] RDX: 00007ffc56abe590 RSI: 00007ffc56abe590 RDI: 000000000249a960 [ 20.195615] RBP: 00007fc621880e40 R08: 0000000000000000 R09: 00007fc62161fff0 [ 20.202852] R10: 00007fc62160e4c0 R11: 0000000000000246 R12: 0000000004000000 [ 20.210088] R13: 00007fc621881018 R14: 0000000008000004 R15: 0000000000000000 [ 20.217330] 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 [ 20.236417] RIP: native_write_cr4+0x4/0x10 RSP: ffff8801db407ca8 [ 20.242532] ---[ end trace 0f9980f3ece72e03 ]--- [ 20.247251] Kernel panic - not syncing: Fatal exception in interrupt [ 20.254107] Dumping ftrace buffer: [ 20.257612] (ftrace buffer empty) [ 20.261287] Kernel Offset: disabled [ 20.264877] Rebooting in 86400 seconds..