[....] Starting enhanced syslogd: rsyslogd[ 16.304923] audit: type=1400 audit(1519919212.905:5): avc: denied { syslog } for pid=4080 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: [ 22.550338] audit: type=1400 audit(1519919219.151:6): avc: denied { map } for pid=4220 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 '10.128.0.50' (ECDSA) to the list of known hosts. executing program [ 28.859580] audit: type=1400 audit(1519919225.460:7): avc: denied { map } for pid=4234 comm="syzkaller497390" path="/root/syzkaller497390405" 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 [ 28.893298] kasan: CONFIG_KASAN_INLINE enabled [ 28.897937] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 28.905322] general protection fault: 0000 [#1] SMP KASAN [ 28.910844] Dumping ftrace buffer: [ 28.914354] (ftrace buffer empty) [ 28.918041] Modules linked in: [ 28.921213] CPU: 1 PID: 4234 Comm: syzkaller497390 Not tainted 4.16.0-rc3+ #334 [ 28.928636] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 28.938068] RIP: 0010:hrtimer_active+0x1da/0x3c0 [ 28.942797] RSP: 0018:ffff8801cd4873c0 EFLAGS: 00010202 [ 28.948136] RAX: 0000000000000008 RBX: 1ffff10039a90ea5 RCX: ffffffff81610225 [ 28.955385] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000010 [ 28.962628] RBP: ffff8801cd487500 R08: 0000000000002c02 R09: 0000000000000000 [ 28.969874] R10: 0000000000000011 R11: ffffed0036230078 R12: 0000000000000010 [ 28.977118] R13: 0000000000000000 R14: ffffed0039a90e83 R15: dffffc0000000000 [ 28.984361] FS: 0000000000793880(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 28.992556] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 28.998407] CR2: 00007f082a9d8000 CR3: 00000001b12a6005 CR4: 00000000001626e0 [ 29.005661] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 29.012902] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 29.020141] Call Trace: [ 29.022706] ? hrtimer_forward+0x2d0/0x2d0 [ 29.026914] ? vmx_update_msr_bitmap+0x13a/0x430 [ 29.031644] ? setup_msrs+0x926/0x1d80 [ 29.035505] ? vmx_set_cr4+0x353/0x610 [ 29.039372] hrtimer_try_to_cancel+0x91/0x5b0 [ 29.043843] ? update_exception_bitmap+0x19a/0x200 [ 29.048748] ? __hrtimer_get_remaining+0x1c0/0x1c0 [ 29.053653] ? vmx_vcpu_reset+0x55f/0xc70 [ 29.057774] ? load_vmcs12_host_state+0x1fa0/0x1fa0 [ 29.062767] ? __mutex_unlock_slowpath+0xe9/0xac0 [ 29.067589] ? lock_downgrade+0x980/0x980 [ 29.071713] ? kvm_arch_vcpu_load+0x1c1/0x8d0 [ 29.076194] hrtimer_cancel+0x22/0x40 [ 29.079977] kvm_lapic_reset+0x93/0xf40 [ 29.083928] ? kvm_lapic_set_base+0x750/0x750 [ 29.088405] ? kvm_arch_vcpu_free+0x80/0x80 [ 29.092710] kvm_arch_vcpu_setup+0x31/0x50 [ 29.096918] kvm_vm_ioctl+0x52d/0x1cf0 [ 29.100780] ? kvm_set_memory_region+0x50/0x50 [ 29.105334] ? kfree+0xf3/0x260 [ 29.108585] ? kvm_uevent_notify_change.part.39+0x39c/0x430 [ 29.114265] ? trace_hardirqs_on+0xd/0x10 [ 29.118386] ? fd_install+0x4d/0x60 [ 29.121981] ? kvm_dev_ioctl+0x17b/0x18b0 [ 29.126104] ? install_new_memslots+0x420/0x420 [ 29.130743] ? lock_release+0xa40/0xa40 [ 29.134687] ? rcutorture_record_progress+0x10/0x10 [ 29.139682] ? avc_has_extended_perms+0x7fa/0x12c0 [ 29.144588] ? avc_ss_reset+0x110/0x110 [ 29.148535] ? save_stack+0xa3/0xd0 [ 29.152131] ? save_stack+0x43/0xd0 [ 29.155729] ? __kasan_slab_free+0x11a/0x170 [ 29.160111] ? kasan_slab_free+0xe/0x10 [ 29.164060] ? kmem_cache_free+0x83/0x2a0 [ 29.168177] ? putname+0xee/0x130 [ 29.171601] ? SyS_openat+0x30/0x40 [ 29.175212] ? do_syscall_64+0x281/0x940 [ 29.179245] ? debug_check_no_obj_freed+0x3da/0xf1f [ 29.184230] ? __lock_is_held+0xb6/0x140 [ 29.188268] ? check_same_owner+0x320/0x320 [ 29.192562] ? get_unused_fd_flags+0x190/0x190 [ 29.197125] ? rcu_note_context_switch+0x710/0x710 [ 29.202057] ? kvm_set_memory_region+0x50/0x50 [ 29.206623] do_vfs_ioctl+0x1b1/0x1520 [ 29.210489] ? debug_lockdep_rcu_enabled+0x77/0x90 [ 29.215393] ? ioctl_preallocate+0x2b0/0x2b0 [ 29.219774] ? selinux_capable+0x40/0x40 [ 29.223804] ? putname+0xf3/0x130 [ 29.227230] ? do_sys_open+0x320/0x6d0 [ 29.231097] ? security_file_ioctl+0x7d/0xb0 [ 29.235475] ? security_file_ioctl+0x89/0xb0 [ 29.239854] SyS_ioctl+0x8f/0xc0 [ 29.243192] ? do_vfs_ioctl+0x1520/0x1520 [ 29.247311] do_syscall_64+0x281/0x940 [ 29.251171] ? __do_page_fault+0xc90/0xc90 [ 29.255375] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 29.260103] ? syscall_return_slowpath+0x550/0x550 [ 29.265009] ? syscall_return_slowpath+0x2ac/0x550 [ 29.269915] ? prepare_exit_to_usermode+0x350/0x350 [ 29.274902] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 29.280236] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 29.285053] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 29.290212] RIP: 0033:0x43fcf9 [ 29.293373] RSP: 002b:00007ffc298497d8 EFLAGS: 00000217 ORIG_RAX: 0000000000000010 [ 29.301143] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fcf9 [ 29.308393] RDX: 0000000000000000 RSI: 000000000000ae41 RDI: 0000000000000004 [ 29.315638] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 29.322881] R10: 00000000004002c8 R11: 0000000000000217 R12: 0000000000401620 [ 29.330127] R13: 00000000004016b0 R14: 0000000000000000 R15: 0000000000000000 [ 29.337383] 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 [ 29.356456] RIP: hrtimer_active+0x1da/0x3c0 RSP: ffff8801cd4873c0 [ 29.362730] ---[ end trace 8fb3962750b44435 ]--- [ 29.367496] Kernel panic - not syncing: Fatal exception [ 29.373266] Dumping ftrace buffer: [ 29.376785] (ftrace buffer empty) [ 29.380467] Kernel Offset: disabled [ 29.384068] Rebooting in 86400 seconds..