[?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. [ 11.867345] audit: type=1400 audit(1513791786.211:6): avc: denied { map } for pid=3127 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 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added 'ci-upstream-next-kasan-gce-2,10.128.0.42' (ECDSA) to the list of known hosts. syzkaller login: [ 74.303934] audit: type=1400 audit(1513791848.647:7): avc: denied { map } for pid=3146 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 17:44:08 parsed 1 programs 2017/12/20 17:44:08 executed programs: 0 [ 74.409279] audit: type=1400 audit(1513791848.753:8): avc: denied { map } for pid=3146 comm="syz-execprog" path="/root/syzkaller-shm938443895" 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 [ 74.440169] kvm: KVM_SET_TSS_ADDR need to be called before entering vcpu [ 74.475421] kasan: CONFIG_KASAN_INLINE enabled [ 74.480028] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 74.487384] general protection fault: 0000 [#1] SMP KASAN [ 74.492897] Dumping ftrace buffer: [ 74.496402] (ftrace buffer empty) [ 74.500339] Modules linked in: [ 74.503565] CPU: 1 PID: 3125 Comm: udevd Not tainted 4.15.0-rc4-next-20171220+ #77 [ 74.511244] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 74.520572] RIP: 0010:native_write_cr4+0x4/0x10 [ 74.525204] RSP: 0018:ffff8801db307ca8 EFLAGS: 00010006 [ 74.530533] RAX: ffff8801cda50300 RBX: 00000000001606e0 RCX: ffffffff811a4932 [ 74.538033] RDX: 0000000000010000 RSI: 0000000000000000 RDI: 00000000001606e0 [ 74.545271] RBP: ffff8801db307ca8 R08: 1ffff10039b48f14 R09: 0000000000000000 [ 74.552508] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000006 [ 74.559746] R13: ffff8801cda50300 R14: ffff8801db31a130 R15: ffff8801db31a130 [ 74.567357] FS: 00007f4dd53bb7a0(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 74.575549] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 74.581395] CR2: 00007f4dd53c2000 CR3: 00000001cdbf4005 CR4: 00000000001626e0 [ 74.588634] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 74.595869] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 74.603103] Call Trace: [ 74.605652] [ 74.607774] hardware_disable+0x34a/0x4b0 [ 74.611888] ? irq_work_sync+0x1a0/0x1a0 [ 74.615914] ? lock_downgrade+0x980/0x980 [ 74.620037] ? kvm_io_bus_get_dev+0x2a0/0x2a0 [ 74.624497] kvm_arch_hardware_disable+0x35/0xd0 [ 74.629219] hardware_disable_nolock+0x30/0x40 [ 74.633768] flush_smp_call_function_queue+0x1f4/0x570 [ 74.639012] ? cpumask_weight+0x40/0x40 [ 74.642952] ? rcu_idle_exit+0x410/0x410 [ 74.646981] ? __lock_is_held+0xb6/0x140 [ 74.651021] generic_smp_call_function_single_interrupt+0x13/0x30 [ 74.657229] smp_call_function_single_interrupt+0x103/0x640 [ 74.662905] ? smp_call_function_interrupt+0x640/0x640 [ 74.668145] ? _raw_spin_lock+0x32/0x40 [ 74.672086] ? _raw_spin_unlock+0x22/0x30 [ 74.676200] ? handle_edge_irq+0x2b4/0x7c0 [ 74.680416] ? task_prio+0x40/0x40 [ 74.683928] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 74.688739] ? unlink_anon_vmas+0x5aa/0x9f0 [ 74.693026] call_function_single_interrupt+0xa9/0xb0 [ 74.698178] [ 74.700381] RIP: 0010:kmem_cache_free+0x17c/0x2a0 [ 74.705184] RSP: 0018:ffff8801cda47a30 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff04 [ 74.712858] RAX: 0000000000000007 RBX: ffff8801dae0b780 RCX: 0000000000000006 [ 74.720092] RDX: 0000000000000000 RSI: 1ffff10039b4a173 RDI: 0000000000000286 [ 74.727327] RBP: ffff8801cda47a50 R08: 1ffff10039b48f14 R09: 0000000000000000 [ 74.734565] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8801dad30500 [ 74.741803] R13: 0000000000000286 R14: ffffffff819fc81a R15: ffff8801dae0b798 [ 74.749053] ? unlink_anon_vmas+0x5aa/0x9f0 [ 74.753348] unlink_anon_vmas+0x5aa/0x9f0 [ 74.757638] ? mark_held_locks+0xaf/0x100 [ 74.761759] ? retint_kernel+0x10/0x10 [ 74.765624] ? page_lock_anon_vma_read+0x6a0/0x6a0 [ 74.770532] free_pgtables+0xe7/0x330 [ 74.774300] unmap_region+0x34a/0x4f0 [ 74.778068] ? reusable_anon_vma+0x560/0x560 [ 74.782443] ? do_raw_spin_trylock+0x190/0x190 [ 74.786993] ? lock_acquire+0x1d5/0x580 [ 74.790931] ? lock_acquire+0x1d5/0x580 [ 74.794869] ? vm_munmap+0xed/0x180 [ 74.798472] ? userfaultfd_remove+0x220/0x220 [ 74.802929] ? vmacache_find+0x5f/0x280 [ 74.806867] ? vmacache_update+0xfe/0x130 [ 74.810980] ? find_vma+0x30/0x150 [ 74.814494] do_munmap+0x726/0xdf0 [ 74.818012] vm_munmap+0x10b/0x180 [ 74.821516] ? do_munmap+0xdf0/0xdf0 [ 74.825198] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 74.830181] SyS_munmap+0x25/0x30 [ 74.833602] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 74.838323] RIP: 0033:0x7f4dd4acbd37 [ 74.841999] RSP: 002b:00007ffc55a458a8 EFLAGS: 00000206 ORIG_RAX: 000000000000000b [ 74.849671] RAX: ffffffffffffffda RBX: 000000000139bad0 RCX: 00007f4dd4acbd37 [ 74.856907] RDX: 0000000000000000 RSI: 0000000000001000 RDI: 00007f4dd53c2000 [ 74.864141] RBP: 0000000000000000 R08: 00007f4dd53bb7a0 R09: 0000000000000000 [ 74.871378] R10: 1999999999999999 R11: 0000000000000206 R12: 00000000ffffffff [ 74.878614] R13: 000000000139bad0 R14: 0000000000000006 R15: 0000000000000ae8 [ 74.885859] 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 [ 74.904916] RIP: native_write_cr4+0x4/0x10 RSP: ffff8801db307ca8 [ 74.911030] ---[ end trace 6460df51a22b5974 ]--- [ 74.915751] Kernel panic - not syncing: Fatal exception in interrupt [ 74.922246] Dumping ftrace buffer: [ 74.925751] (ftrace buffer empty) [ 74.929428] Kernel Offset: disabled [ 74.933032] Rebooting in 86400 seconds..