[....] Starting enhanced syslogd: rsyslogd[ 10.224795] audit: type=1400 audit(1515267327.407:5): avc: denied { syslog } for pid=3316 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: [ 12.423115] audit: type=1400 audit(1515267329.605:6): avc: denied { map } for pid=3455 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 '10.128.15.224' (ECDSA) to the list of known hosts. executing program executing program [ 45.812923] audit: type=1400 audit(1515267362.995:7): avc: denied { map } for pid=3474 comm="syzkaller128453" path="/root/syzkaller128453142" 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 [ 45.844420] kvm: KVM_SET_TSS_ADDR need to be called before entering vcpu executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 46.912126] kasan: CONFIG_KASAN_INLINE enabled [ 46.916719] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 46.924048] general protection fault: 0000 [#1] SMP KASAN [ 46.929556] Dumping ftrace buffer: [ 46.933062] (ftrace buffer empty) [ 46.936743] Modules linked in: [ 46.939909] CPU: 0 PID: 3451 Comm: udevd Not tainted 4.15.0-rc6-next-20180105+ #89 [ 46.947579] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 46.956904] RIP: 0010:native_write_cr4+0x4/0x10 [ 46.961535] RSP: 0018:ffff8801db407ed0 EFLAGS: 00010006 [ 46.966863] RAX: ffff8801c23146c0 RBX: 00000000001606f0 RCX: ffffffff8115d7c2 [ 46.974096] RDX: 0000000000010000 RSI: 0000000000000000 RDI: 00000000001606f0 [ 46.981328] RBP: ffff8801db407ed0 R08: 0000000000000000 R09: 0000000000000000 [ 46.988565] R10: ffff8801c1da7d48 R11: 0000000000000000 R12: 0000000000000006 [ 46.995799] R13: ffff8801c23146c0 R14: ffff8801db41d130 R15: ffff8801db41d130 [ 47.003040] FS: 00007f218be317a0(0000) GS:ffff8801db400000(0000) knlGS:0000000000000000 [ 47.011238] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 47.017083] CR2: 00007f218be38000 CR3: 00000001c1c08003 CR4: 00000000001626f0 [ 47.024320] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 47.031553] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 47.038786] Call Trace: [ 47.041332] [ 47.043456] hardware_disable+0x34a/0x4b0 [ 47.047572] ? kvm_io_bus_get_dev+0x1b0/0x1b0 [ 47.052031] kvm_arch_hardware_disable+0x35/0xd0 [ 47.056750] hardware_disable_nolock+0x30/0x40 [ 47.061302] flush_smp_call_function_queue+0x165/0x420 [ 47.066542] generic_smp_call_function_single_interrupt+0x13/0x30 [ 47.072744] smp_call_function_single_interrupt+0x83/0x450 [ 47.078332] call_function_single_interrupt+0xa9/0xb0 [ 47.083487] [ 47.085689] RIP: 0010:__sanitizer_cov_trace_pc+0x4b/0x50 [ 47.091098] RSP: 0018:ffff8801c1da7a80 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff04 [ 47.098769] RAX: ffff8801c23146c0 RBX: ffff8801c1da7c00 RCX: ffffffff819393c1 [ 47.106008] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8801d769a4a8 [ 47.113240] RBP: ffff8801c1da7a80 R08: 0000000000000000 R09: 0000000000000000 [ 47.120474] R10: ffff8801c1da7d48 R11: 0000000000000000 R12: ffff8801ca44255c [ 47.127708] R13: 0000000000000041 R14: dffffc0000000000 R15: 1ffff100383b4f56 [ 47.134961] ? path_lookupat+0xb1/0x8b0 [ 47.138916] path_lookupat+0xb1/0x8b0 [ 47.142691] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 47.147846] ? path_mountpoint+0xbd0/0xbd0 [ 47.152046] ? check_noncircular+0x20/0x20 [ 47.156251] ? find_held_lock+0x35/0x1e0 [ 47.160278] filename_lookup+0x1a1/0x3b0 [ 47.164301] ? filename_parentat+0x400/0x400 [ 47.168681] ? check_stack_object+0x68/0x140 [ 47.173058] ? strncpy_from_user+0x20f/0x2d0 [ 47.177430] ? getname_flags+0x256/0x580 [ 47.181455] user_path_at_empty+0x40/0x50 [ 47.185565] ? user_path_at_empty+0x40/0x50 [ 47.189852] vfs_statx+0xe9/0x190 [ 47.193276] ? vfs_statx_fd+0x90/0x90 [ 47.197044] ? userfaultfd_unmap_prep+0x450/0x450 [ 47.201849] ? vm_munmap+0xdb/0x130 [ 47.205442] SYSC_newstat+0x87/0xf0 [ 47.209039] ? cp_new_stat+0x5a0/0x5a0 [ 47.212890] ? vm_munmap+0xeb/0x130 [ 47.216483] ? entry_SYSCALL_64_fastpath+0x5/0x9a [ 47.221291] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 47.226276] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 47.230997] SyS_newstat+0x1d/0x30 [ 47.234501] entry_SYSCALL_64_fastpath+0x23/0x9a [ 47.239221] RIP: 0033:0x7f218b538c65 [ 47.242894] RSP: 002b:00007ffd34460118 EFLAGS: 00000246 ORIG_RAX: 0000000000000004 [ 47.250566] RAX: ffffffffffffffda RBX: 0000000000a3d6cc RCX: 00007f218b538c65 [ 47.257800] RDX: 00007ffd34460190 RSI: 00007ffd34460190 RDI: 00007ffd34460620 [ 47.265035] RBP: 0000000000b7e800 R08: 0000000000000000 R09: 00007ffd34460630 [ 47.272268] R10: 00007f218b57d300 R11: 0000000000000246 R12: 0000000000b7e950 [ 47.279502] R13: 0000000000625500 R14: 00000000009f1030 R15: 0000000000a29a00 [ 47.286739] 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 [ 47.305797] RIP: native_write_cr4+0x4/0x10 RSP: ffff8801db407ed0 [ 47.311908] ---[ end trace 3bd05a91242fb7bd ]--- [ 47.316625] Kernel panic - not syncing: Fatal exception in interrupt [ 47.323110] Dumping ftrace buffer: [ 47.326616] (ftrace buffer empty) [ 47.330305] Kernel Offset: disabled [ 47.333908] Rebooting in 86400 seconds..