[ 72.828631][ T26] audit: type=1800 audit(1567654864.867:30): pid=10387 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [....] 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: [ 76.731821][ T26] kauditd_printk_skb: 4 callbacks suppressed [ 76.731834][ T26] audit: type=1400 audit(1567654868.797:35): avc: denied { map } for pid=10564 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 '10.128.0.37' (ECDSA) to the list of known hosts. executing program [ 83.067796][ T26] audit: type=1400 audit(1567654875.127:36): avc: denied { map } for pid=10576 comm="syz-executor164" path="/root/syz-executor164249425" dev="sda1" ino=16484 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 83.071401][T10576] L1TF CPU bug present and SMT on, data leak possible. See CVE-2018-3646 and https://www.kernel.org/doc/html/latest/admin-guide/hw-vuln/l1tf.html for details. [ 83.130910][T10576] kvm [10576]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000004 data 0x20 [ 83.140671][T10576] kvm [10576]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000004 data 0x40 [ 83.150715][T10576] kvm [10576]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000004 data 0x60 [ 83.160778][T10576] kvm [10576]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000004 data 0x80 [ 83.170629][T10576] kvm [10576]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000004 data 0x94 [ 83.180345][T10576] kvm [10576]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000004 data 0x48c [ 83.189864][T10576] kvm [10576]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000004 data 0x4ac [ 83.199684][T10576] kvm [10576]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000005 data 0x1520 [ 83.209711][T10576] kvm [10576]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000006 data 0x15d4 [ 83.219467][T10576] kvm [10576]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000007 data 0x15c4 [ 83.232940][T10576] kasan: CONFIG_KASAN_INLINE enabled [ 83.238320][T10576] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 83.246787][T10576] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 83.254080][T10576] CPU: 0 PID: 10576 Comm: syz-executor164 Not tainted 5.3.0-rc7+ #0 [ 83.263670][T10576] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 83.273990][T10576] RIP: 0010:__apic_accept_irq+0x46/0xbc0 [ 83.279721][T10576] Code: c0 44 89 45 d4 4c 89 4d c8 e8 96 db 5c 00 49 8d 86 98 00 00 00 48 89 c2 48 89 45 b8 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 65 0a 00 00 4d 8b be 98 00 00 00 0f 1f 44 00 00 [ 83.299719][T10576] RSP: 0018:ffff8880a1e37820 EFLAGS: 00010202 [ 83.305887][T10576] RAX: dffffc0000000000 RBX: ffff8880a1e37958 RCX: 0000000000000000 [ 83.314728][T10576] RDX: 0000000000000013 RSI: ffffffff811599ba RDI: 0000000000000000 [ 83.322870][T10576] RBP: ffff8880a1e37878 R08: 0000000000000000 R09: 0000000000000000 [ 83.330925][T10576] R10: fffff52000bf6070 R11: ffffc90005fb0383 R12: 0000000000000000 [ 83.339151][T10576] R13: 0000000000000000 R14: 0000000000000000 R15: ffff88808c5d2ff0 [ 83.347331][T10576] FS: 0000555555c05880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 83.356608][T10576] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 83.363269][T10576] CR2: 0000000000000000 CR3: 00000000a42f6000 CR4: 00000000001426f0 [ 83.371241][T10576] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 83.379730][T10576] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 83.387681][T10576] Call Trace: [ 83.390961][T10576] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 83.397198][T10576] kvm_apic_set_irq+0x10b/0x170 [ 83.402326][T10576] kvm_hv_process_stimers+0xd55/0x1a10 [ 83.408032][T10576] ? kvm_hv_irq_routing_update+0x410/0x410 [ 83.413848][T10576] ? lock_acquire+0x190/0x410 [ 83.418532][T10576] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 83.424769][T10576] ? __kasan_check_write+0x14/0x20 [ 83.429867][T10576] vcpu_enter_guest+0x4d2/0x5e90 [ 83.434787][T10576] ? mark_held_locks+0xf0/0xf0 [ 83.439541][T10576] ? kvm_vcpu_ioctl+0x181/0xfd0 [ 83.444373][T10576] ? handle_emulation_failure+0x4e0/0x4e0 [ 83.450205][T10576] ? lock_acquire+0x190/0x410 [ 83.454865][T10576] ? kvm_check_async_pf_completion+0x2d8/0x440 [ 83.461003][T10576] kvm_arch_vcpu_ioctl_run+0x464/0x1750 [ 83.466527][T10576] ? kvm_arch_vcpu_ioctl_run+0x464/0x1750 [ 83.472239][T10576] kvm_vcpu_ioctl+0x4dc/0xfd0 [ 83.477007][T10576] ? kvm_write_guest_cached+0x40/0x40 [ 83.482372][T10576] ? tomoyo_path_number_perm+0x263/0x520 [ 83.488265][T10576] ? tomoyo_execute_permission+0x4a0/0x4a0 [ 83.494364][T10576] ? put_unused_fd+0x62/0x80 [ 83.499072][T10576] ? rwlock_bug.part.0+0x90/0x90 [ 83.504014][T10576] ? put_unused_fd+0x4f/0x80 [ 83.508767][T10576] ? kvm_write_guest_cached+0x40/0x40 [ 83.515774][T10576] do_vfs_ioctl+0xdb6/0x13e0 [ 83.520620][T10576] ? ioctl_preallocate+0x210/0x210 [ 83.525896][T10576] ? selinux_file_mprotect+0x620/0x620 [ 83.531425][T10576] ? __fget_light+0x1a9/0x230 [ 83.536093][T10576] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 83.542430][T10576] ? tomoyo_file_ioctl+0x23/0x30 [ 83.547437][T10576] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 83.553668][T10576] ? security_file_ioctl+0x8d/0xc0 [ 83.559375][T10576] ksys_ioctl+0xab/0xd0 [ 83.563697][T10576] __x64_sys_ioctl+0x73/0xb0 [ 83.568383][T10576] do_syscall_64+0xfd/0x6a0 [ 83.572899][T10576] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 83.578790][T10576] RIP: 0033:0x442a19 [ 83.582681][T10576] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 1b 0c fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 83.602372][T10576] RSP: 002b:00007fff3807d958 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 83.610775][T10576] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000442a19 [ 83.618732][T10576] RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005 [ 83.627467][T10576] RBP: 00000000006cd018 R08: 00000000004002c8 R09: 00000000004002c8 [ 83.635768][T10576] R10: 00000000004002c8 R11: 0000000000000246 R12: 0000000000403ac0 [ 83.644047][T10576] R13: 0000000000403b50 R14: 0000000000000000 R15: 0000000000000000 [ 83.652448][T10576] Modules linked in: [ 83.656963][T10576] ---[ end trace 0eed7fccdf9fd7d3 ]--- [ 83.662546][T10576] RIP: 0010:__apic_accept_irq+0x46/0xbc0 [ 83.668164][T10576] Code: c0 44 89 45 d4 4c 89 4d c8 e8 96 db 5c 00 49 8d 86 98 00 00 00 48 89 c2 48 89 45 b8 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 65 0a 00 00 4d 8b be 98 00 00 00 0f 1f 44 00 00 [ 83.688141][T10576] RSP: 0018:ffff8880a1e37820 EFLAGS: 00010202 [ 83.694314][T10576] RAX: dffffc0000000000 RBX: ffff8880a1e37958 RCX: 0000000000000000 [ 83.702384][T10576] RDX: 0000000000000013 RSI: ffffffff811599ba RDI: 0000000000000000 [ 83.710393][T10576] RBP: ffff8880a1e37878 R08: 0000000000000000 R09: 0000000000000000 [ 83.718445][T10576] R10: fffff52000bf6070 R11: ffffc90005fb0383 R12: 0000000000000000 [ 83.726453][T10576] R13: 0000000000000000 R14: 0000000000000000 R15: ffff88808c5d2ff0 [ 83.734479][T10576] FS: 0000555555c05880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 83.743441][T10576] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 83.750216][T10576] CR2: 0000000000000000 CR3: 00000000a42f6000 CR4: 00000000001426f0 [ 83.758204][T10576] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 83.766380][T10576] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 83.774651][T10576] Kernel panic - not syncing: Fatal exception [ 83.782889][T10576] Kernel Offset: disabled [ 83.787432][T10576] Rebooting in 86400 seconds..