[....] Starting enhanced syslogd: rsyslogd[ 17.184981] audit: type=1400 audit(1519745454.514:5): avc: denied { syslog } for pid=4092 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 OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 21.987915] audit: type=1400 audit(1519745459.317:6): avc: denied { map } for pid=4232 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 '10.128.0.36' (ECDSA) to the list of known hosts. executing program [ 28.299700] audit: type=1400 audit(1519745465.629:7): avc: denied { map } for pid=4246 comm="syzkaller543411" path="/root/syzkaller543411621" 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 [ 28.333313] kasan: CONFIG_KASAN_INLINE enabled [ 28.337968] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 28.345349] general protection fault: 0000 [#1] SMP KASAN [ 28.350871] Dumping ftrace buffer: [ 28.354381] (ftrace buffer empty) [ 28.358060] Modules linked in: [ 28.361225] CPU: 0 PID: 4246 Comm: syzkaller543411 Not tainted 4.16.0-rc3+ #331 [ 28.368638] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 28.377970] RIP: 0010:hrtimer_active+0x1da/0x3c0 [ 28.382692] RSP: 0018:ffff8801b16173c0 EFLAGS: 00010202 [ 28.388026] RAX: 0000000000000008 RBX: 1ffff100362c2ea5 RCX: ffffffff81610225 [ 28.395265] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000010 [ 28.402514] RBP: ffff8801b1617500 R08: 0000000000002c02 R09: 0000000000000000 [ 28.409780] R10: 0000000000000011 R11: ffffed0036262078 R12: 0000000000000010 [ 28.417037] R13: 0000000000000000 R14: ffffed00362c2e83 R15: dffffc0000000000 [ 28.424296] FS: 000000000215d880(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 28.432492] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 28.438342] CR2: 00007fa420cf1000 CR3: 00000001b2ef2002 CR4: 00000000001626f0 [ 28.445586] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 28.452824] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 28.460080] Call Trace: [ 28.462663] ? hrtimer_forward+0x2d0/0x2d0 [ 28.466873] ? vmx_update_msr_bitmap+0x13a/0x430 [ 28.471605] ? setup_msrs+0x926/0x1d80 [ 28.475476] ? vmx_set_cr4+0x353/0x610 [ 28.479597] hrtimer_try_to_cancel+0x91/0x5b0 [ 28.484062] ? update_exception_bitmap+0x19a/0x200 [ 28.488963] ? __hrtimer_get_remaining+0x1c0/0x1c0 [ 28.493859] ? vmx_vcpu_reset+0x55f/0xc70 [ 28.497980] ? load_vmcs12_host_state+0x1fa0/0x1fa0 [ 28.502971] ? __mutex_unlock_slowpath+0xe9/0xac0 [ 28.507783] ? lock_downgrade+0x980/0x980 [ 28.511902] ? kvm_arch_vcpu_load+0x1c1/0x8d0 [ 28.516368] hrtimer_cancel+0x22/0x40 [ 28.520142] kvm_lapic_reset+0x93/0xf40 [ 28.524084] ? kvm_lapic_set_base+0x750/0x750 [ 28.528551] ? kvm_arch_vcpu_free+0x80/0x80 [ 28.532845] kvm_arch_vcpu_setup+0x31/0x50 [ 28.537048] kvm_vm_ioctl+0x52d/0x1cf0 [ 28.540914] ? kvm_set_memory_region+0x50/0x50 [ 28.545467] ? kfree+0xf3/0x260 [ 28.548716] ? kvm_uevent_notify_change.part.39+0x39c/0x430 [ 28.554404] ? trace_hardirqs_on+0xd/0x10 [ 28.558532] ? fd_install+0x4d/0x60 [ 28.562132] ? kvm_dev_ioctl+0x17b/0x18b0 [ 28.566253] ? install_new_memslots+0x420/0x420 [ 28.570896] ? lock_release+0xa40/0xa40 [ 28.574843] ? rcutorture_record_progress+0x10/0x10 [ 28.579852] ? avc_has_extended_perms+0x7fa/0x12c0 [ 28.584759] ? avc_ss_reset+0x110/0x110 [ 28.588703] ? save_stack+0xa3/0xd0 [ 28.592304] ? save_stack+0x43/0xd0 [ 28.595912] ? __kasan_slab_free+0x11a/0x170 [ 28.600294] ? kasan_slab_free+0xe/0x10 [ 28.604238] ? kmem_cache_free+0x83/0x2a0 [ 28.608362] ? putname+0xee/0x130 [ 28.611787] ? SyS_openat+0x30/0x40 [ 28.615386] ? do_syscall_64+0x281/0x940 [ 28.619431] ? debug_check_no_obj_freed+0x3da/0xf1f [ 28.624419] ? __lock_is_held+0xb6/0x140 [ 28.628469] ? check_same_owner+0x320/0x320 [ 28.632765] ? get_unused_fd_flags+0x190/0x190 [ 28.637317] ? rcu_note_context_switch+0x710/0x710 [ 28.642225] ? kvm_set_memory_region+0x50/0x50 [ 28.646776] do_vfs_ioctl+0x1b1/0x1520 [ 28.650636] ? debug_lockdep_rcu_enabled+0x77/0x90 [ 28.655537] ? ioctl_preallocate+0x2b0/0x2b0 [ 28.659917] ? selinux_capable+0x40/0x40 [ 28.663947] ? putname+0xf3/0x130 [ 28.667376] ? do_sys_open+0x320/0x6d0 [ 28.671238] ? security_file_ioctl+0x7d/0xb0 [ 28.675615] ? security_file_ioctl+0x89/0xb0 [ 28.679997] SyS_ioctl+0x8f/0xc0 [ 28.683336] ? do_vfs_ioctl+0x1520/0x1520 [ 28.687458] do_syscall_64+0x281/0x940 [ 28.691316] ? __do_page_fault+0xc90/0xc90 [ 28.695523] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 28.700249] ? syscall_return_slowpath+0x550/0x550 [ 28.705149] ? syscall_return_slowpath+0x2ac/0x550 [ 28.710048] ? prepare_exit_to_usermode+0x350/0x350 [ 28.715038] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 28.720374] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 28.725195] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 28.730354] RIP: 0033:0x43fcf9 [ 28.733512] RSP: 002b:00007ffdc42e1f88 EFLAGS: 00000217 ORIG_RAX: 0000000000000010 [ 28.741281] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fcf9 [ 28.748525] RDX: 0000000000000000 RSI: 000000000000ae41 RDI: 0000000000000004 [ 28.755765] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 28.763005] R10: 00000000004002c8 R11: 0000000000000217 R12: 0000000000401620 [ 28.770251] R13: 00000000004016b0 R14: 0000000000000000 R15: 0000000000000000 [ 28.777505] Code: ff ff 48 8d 85 18 ff ff ff 48 c1 e8 03 4e 8d 34 38 e8 1b f2 0f 00 48 8b 85 f0 fe ff ff c6 00 00 48 8b 85 d8 fe ff ff 48 c1 e8 03 <42> 80 3c 38 00 0f 85 c2 01 00 00 48 8b 85 e8 fe ff ff 48 8b 58 [ 28.796584] RIP: hrtimer_active+0x1da/0x3c0 RSP: ffff8801b16173c0 [ 28.802918] ---[ end trace f525a1611477bf99 ]--- [ 28.807691] Kernel panic - not syncing: Fatal exception [ 28.813462] Dumping ftrace buffer: [ 28.816975] (ftrace buffer empty) [ 28.820654] Kernel Offset: disabled [ 28.824252] Rebooting in 86400 seconds..