[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 78.013454][ T32] audit: type=1800 audit(1567826615.067:25): pid=11593 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 78.036479][ T32] audit: type=1800 audit(1567826615.087:26): pid=11593 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 78.078076][ T32] audit: type=1800 audit(1567826615.107:27): pid=11593 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.10.60' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 89.281899][ T5] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 89.521874][ T5] usb 1-1: Using ep0 maxpacket: 16 [ 89.642009][ T5] usb 1-1: config 0 has an invalid interface number: 238 but max is 0 [ 89.650245][ T5] usb 1-1: config 0 has no interface number 0 [ 89.656472][ T5] usb 1-1: New USB device found, idVendor=1618, idProduct=9113, bcdDevice=fc.5c [ 89.665626][ T5] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 89.674967][ T5] usb 1-1: config 0 descriptor?? [ 89.718907][ T5] rsi_91x: rsi_probe: Initialized os intf ops executing program [ 90.142056][ T5] rsi_91x: rsi_usb_reg_read: Reg read failed with error code :-71 [ 90.150037][ T5] rsi_91x: rsi_hal_prepare_fwload: REGOUT read failed [ 90.157127][ T5] rsi_91x: rsi_probe: Failed in device init [ 90.164824][ T5] rsi_91x: rsi_probe: Failed in probe...Exiting [ 90.171288][ T5] RSI-USB WLAN: probe of 1-1:0.238 failed with error -71 [ 90.182268][ T5] usb 1-1: USB disconnect, device number 2 [ 90.531927][ T5] usb 1-1: new high-speed USB device number 3 using dummy_hcd [ 90.771874][ T5] usb 1-1: Using ep0 maxpacket: 16 [ 90.892000][ T5] usb 1-1: config 0 has an invalid interface number: 238 but max is 0 [ 90.900258][ T5] usb 1-1: config 0 has no interface number 0 [ 90.906544][ T5] usb 1-1: New USB device found, idVendor=1618, idProduct=9113, bcdDevice=fc.5c [ 90.915689][ T5] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 90.925093][ T5] usb 1-1: config 0 descriptor?? [ 90.965409][ T5] rsi_91x: rsi_probe: Initialized os intf ops executing program [ 91.391980][ T5] rsi_91x: rsi_usb_reg_read: Reg read failed with error code :-71 [ 91.399873][ T5] rsi_91x: rsi_hal_prepare_fwload: REGOUT read failed [ 91.406852][ T5] rsi_91x: rsi_probe: Failed in device init [ 91.414088][ T5] rsi_91x: rsi_probe: Failed in probe...Exiting [ 91.420541][ T5] RSI-USB WLAN: probe of 1-1:0.238 failed with error -71 [ 91.431071][ T5] usb 1-1: USB disconnect, device number 3 [ 91.781937][ T5] usb 1-1: new high-speed USB device number 4 using dummy_hcd [ 91.941835][ C0] ================================================================== [ 91.949922][ C0] BUG: KMSAN: uninit-value in __run_timers+0xb99/0x11a0 [ 91.956974][ C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.3.0-rc7+ #0 [ 91.964096][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 91.974127][ C0] Call Trace: [ 91.977390][ C0] [ 91.980236][ C0] dump_stack+0x191/0x1f0 [ 91.984549][ C0] kmsan_report+0x162/0x2d0 [ 91.989032][ C0] __msan_warning+0x75/0xe0 [ 91.993517][ C0] __run_timers+0xb99/0x11a0 [ 91.998085][ C0] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 92.004138][ C0] ? kmsan_get_shadow_origin_ptr+0x28c/0x3a0 [ 92.010093][ C0] run_timer_softirq+0x2d/0x50 [ 92.014860][ C0] ? timers_dead_cpu+0x9d0/0x9d0 [ 92.019774][ C0] __do_softirq+0x4a1/0x83a [ 92.024261][ C0] irq_exit+0x230/0x280 [ 92.028401][ C0] exiting_irq+0xe/0x10 [ 92.032531][ C0] smp_apic_timer_interrupt+0x48/0x70 [ 92.037877][ C0] apic_timer_interrupt+0x2e/0x40 [ 92.042878][ C0] [ 92.045801][ C0] RIP: 0010:default_idle+0x53/0x90 [ 92.050888][ C0] Code: 13 ce eb f2 44 8b 35 94 59 d2 01 48 c7 c7 78 d5 25 90 e8 30 9b b1 f3 83 38 00 75 31 45 85 f6 7e 07 0f 00 2d 8f d3 4d 00 fb f4 <65> 8b 35 2e 37 af 71 c7 03 00 00 00 00 c7 43 08 00 00 00 00 bf ff [ 92.070477][ C0] RSP: 0018:ffffffff8f60fda0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 92.078865][ C0] RAX: ffff888217c47578 RBX: ffffffff8f638b60 RCX: ccccccccccccd000 [ 92.086826][ C0] RDX: ffff888207e40578 RSI: ffffea000a76d630 RDI: ffffffff9025d578 [ 92.094791][ C0] RBP: ffffffff8f60fdb0 R08: ffffea000000000f R09: ffff88812fffb000 [ 92.102740][ C0] R10: 000000156ba09800 R11: ffffffff8e537bb0 R12: 0000000000000000 [ 92.110692][ C0] R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff8f638b60 [ 92.118653][ C0] ? __cpuidle_text_start+0x8/0x8 [ 92.123660][ C0] ? __cpuidle_text_start+0x8/0x8 [ 92.128664][ C0] arch_cpu_idle+0x25/0x30 [ 92.133058][ C0] do_idle+0x1d7/0x790 [ 92.137110][ C0] cpu_startup_entry+0x45/0x50 [ 92.141859][ C0] rest_init+0x1be/0x1f0 [ 92.146081][ C0] arch_call_rest_init+0x13/0x15 [ 92.150999][ C0] start_kernel+0x991/0xb61 [ 92.155483][ C0] x86_64_start_reservations+0x18/0x2e [ 92.160920][ C0] x86_64_start_kernel+0x81/0x84 [ 92.166453][ C0] secondary_startup_64+0xa4/0xb0 [ 92.171462][ C0] [ 92.173781][ C0] Uninit was created at: [ 92.178000][ C0] kmsan_internal_poison_shadow+0x58/0xb0 [ 92.183693][ C0] kmsan_slab_free+0x8d/0x100 [ 92.189227][ C0] kfree+0x4c1/0x2db0 [ 92.193183][ C0] skb_release_data+0x7de/0x9d0 [ 92.198016][ C0] __kfree_skb+0x8a/0x210 [ 92.202320][ C0] consume_skb+0x2b0/0x2e0 [ 92.206714][ C0] skb_free_datagram+0x52/0x180 [ 92.211551][ C0] netlink_recvmsg+0xd2d/0x18e0 [ 92.216381][ C0] sock_recvmsg+0x3b3/0x3c0 [ 92.220859][ C0] ___sys_recvmsg+0x461/0x11e0 [ 92.225620][ C0] __se_sys_recvmsg+0x2fa/0x450 [ 92.230450][ C0] __x64_sys_recvmsg+0x4a/0x70 [ 92.235188][ C0] do_syscall_64+0xbc/0xf0 [ 92.239581][ C0] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 92.245444][ C0] ================================================================== [ 92.253488][ C0] Disabling lock debugging due to kernel taint [ 92.259619][ C0] Kernel panic - not syncing: panic_on_warn set ... [ 92.266196][ C0] CPU: 0 PID: 0 Comm: swapper/0 Tainted: G B 5.3.0-rc7+ #0 [ 92.274670][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 92.284709][ C0] Call Trace: [ 92.287972][ C0] [ 92.290808][ C0] dump_stack+0x191/0x1f0 [ 92.295120][ C0] panic+0x3c9/0xc1e [ 92.299007][ C0] kmsan_report+0x2ca/0x2d0 [ 92.303490][ C0] __msan_warning+0x75/0xe0 [ 92.307974][ C0] __run_timers+0xb99/0x11a0 [ 92.312543][ C0] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 92.318599][ C0] ? kmsan_get_shadow_origin_ptr+0x28c/0x3a0 [ 92.324570][ C0] run_timer_softirq+0x2d/0x50 [ 92.329311][ C0] ? timers_dead_cpu+0x9d0/0x9d0 [ 92.334235][ C0] __do_softirq+0x4a1/0x83a [ 92.338749][ C0] irq_exit+0x230/0x280 [ 92.342893][ C0] exiting_irq+0xe/0x10 [ 92.347029][ C0] smp_apic_timer_interrupt+0x48/0x70 [ 92.352376][ C0] apic_timer_interrupt+0x2e/0x40 [ 92.357381][ C0] [ 92.360303][ C0] RIP: 0010:default_idle+0x53/0x90 [ 92.365388][ C0] Code: 13 ce eb f2 44 8b 35 94 59 d2 01 48 c7 c7 78 d5 25 90 e8 30 9b b1 f3 83 38 00 75 31 45 85 f6 7e 07 0f 00 2d 8f d3 4d 00 fb f4 <65> 8b 35 2e 37 af 71 c7 03 00 00 00 00 c7 43 08 00 00 00 00 bf ff [ 92.384969][ C0] RSP: 0018:ffffffff8f60fda0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 92.393364][ C0] RAX: ffff888217c47578 RBX: ffffffff8f638b60 RCX: ccccccccccccd000 [ 92.401325][ C0] RDX: ffff888207e40578 RSI: ffffea000a76d630 RDI: ffffffff9025d578 [ 92.409272][ C0] RBP: ffffffff8f60fdb0 R08: ffffea000000000f R09: ffff88812fffb000 [ 92.417222][ C0] R10: 000000156ba09800 R11: ffffffff8e537bb0 R12: 0000000000000000 [ 92.425180][ C0] R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff8f638b60 [ 92.433139][ C0] ? __cpuidle_text_start+0x8/0x8 [ 92.438156][ C0] ? __cpuidle_text_start+0x8/0x8 [ 92.443159][ C0] arch_cpu_idle+0x25/0x30 [ 92.447557][ C0] do_idle+0x1d7/0x790 [ 92.451605][ C0] cpu_startup_entry+0x45/0x50 [ 92.456345][ C0] rest_init+0x1be/0x1f0 [ 92.460565][ C0] arch_call_rest_init+0x13/0x15 [ 92.465480][ C0] start_kernel+0x991/0xb61 [ 92.469963][ C0] x86_64_start_reservations+0x18/0x2e [ 92.475399][ C0] x86_64_start_kernel+0x81/0x84 [ 92.480313][ C0] secondary_startup_64+0xa4/0xb0 [ 92.486440][ C0] Kernel Offset: disabled [ 92.490760][ C0] Rebooting in 86400 seconds..