[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 79.457201][ T31] audit: type=1800 audit(1570085758.501:25): pid=11608 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 79.481110][ T31] audit: type=1800 audit(1570085758.521:26): pid=11608 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 79.516699][ T31] audit: type=1800 audit(1570085758.551:27): pid=11608 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 '10.128.10.43' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 108.804157][ T35] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 109.044114][ T35] usb 1-1: Using ep0 maxpacket: 8 [ 109.164257][ T35] usb 1-1: config 0 has an invalid interface number: 235 but max is 0 [ 109.172509][ T35] usb 1-1: config 0 has an invalid descriptor of length 0, skipping remainder of the config [ 109.182781][ T35] usb 1-1: config 0 has no interface number 0 [ 109.188981][ T35] usb 1-1: New USB device found, idVendor=1618, idProduct=9113, bcdDevice=19.d3 [ 109.198123][ T35] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 109.207988][ T35] usb 1-1: config 0 descriptor?? [ 109.247650][ T35] rsi_91x: rsi_probe: Initialized os intf ops executing program [ 109.674234][ T35] rsi_91x: rsi_usb_reg_read: Reg read failed with error code :-71 [ 109.682265][ T35] rsi_91x: rsi_hal_prepare_fwload: REGOUT read failed [ 109.689650][ T35] rsi_91x: rsi_probe: Failed in device init [ 109.697349][ T35] rsi_91x: rsi_probe: Failed in probe...Exiting [ 109.703793][ T35] RSI-USB WLAN: probe of 1-1:0.235 failed with error -71 [ 109.714957][ T35] usb 1-1: USB disconnect, device number 2 [ 110.064235][ T35] usb 1-1: new high-speed USB device number 3 using dummy_hcd [ 110.304117][ T35] usb 1-1: Using ep0 maxpacket: 8 [ 110.424257][ T35] usb 1-1: config 0 has an invalid interface number: 235 but max is 0 [ 110.433180][ T35] usb 1-1: config 0 has an invalid descriptor of length 0, skipping remainder of the config [ 110.443469][ T35] usb 1-1: config 0 has no interface number 0 [ 110.449806][ T35] usb 1-1: New USB device found, idVendor=1618, idProduct=9113, bcdDevice=19.d3 [ 110.459123][ T35] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 110.468421][ T35] usb 1-1: config 0 descriptor?? [ 110.507408][ T35] rsi_91x: rsi_probe: Initialized os intf ops executing program [ 110.944337][ T35] rsi_91x: rsi_usb_reg_read: Reg read failed with error code :-71 [ 110.953452][ T35] rsi_91x: rsi_hal_prepare_fwload: REGOUT read failed [ 110.960743][ T35] rsi_91x: rsi_probe: Failed in device init [ 110.968339][ T35] rsi_91x: rsi_probe: Failed in probe...Exiting [ 110.974877][ T35] RSI-USB WLAN: probe of 1-1:0.235 failed with error -71 [ 110.986152][ T35] usb 1-1: USB disconnect, device number 3 [ 111.344160][ T35] usb 1-1: new high-speed USB device number 4 using dummy_hcd [ 111.464053][ C0] ===================================================== [ 111.471041][ C0] BUG: KMSAN: uninit-value in run_timer_softirq+0x2d/0x50 [ 111.478155][ C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.3.0-rc7+ #0 [ 111.485269][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 111.496357][ C0] Call Trace: [ 111.499629][ C0] [ 111.502481][ C0] dump_stack+0x191/0x1f0 [ 111.506914][ C0] kmsan_report+0x13a/0x2b0 [ 111.511418][ C0] __msan_warning+0x73/0xe0 [ 111.515927][ C0] __run_timers+0xb99/0x11a0 [ 111.520633][ C0] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 111.526805][ C0] ? timers_dead_cpu+0x9d0/0x9d0 [ 111.533480][ C0] ? kmsan_get_shadow_origin_ptr+0x6e/0x4c0 [ 111.539416][ C0] run_timer_softirq+0x2d/0x50 [ 111.544264][ C0] ? timers_dead_cpu+0x9d0/0x9d0 [ 111.549300][ C0] __do_softirq+0x4a1/0x83a [ 111.553897][ C0] irq_exit+0x230/0x280 [ 111.558415][ C0] exiting_irq+0xe/0x10 [ 111.562767][ C0] smp_apic_timer_interrupt+0x48/0x70 [ 111.568232][ C0] apic_timer_interrupt+0x2e/0x40 [ 111.574230][ C0] [ 111.577170][ C0] RIP: 0010:default_idle+0x53/0x90 [ 111.582274][ C0] Code: 13 ee eb f2 44 8b 35 94 79 d2 01 48 c7 c7 78 d5 25 90 e8 c0 9b b1 f3 83 38 00 75 31 45 85 f6 7e 07 0f 00 2d 8f f3 4d 00 fb f4 <65> 8b 35 2e 57 af 71 c7 03 00 00 00 00 c7 43 08 00 00 00 00 bf ff [ 111.601947][ C0] RSP: 0018:ffffffff8f60fda0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 111.610342][ C0] RAX: ffff888217c47578 RBX: ffffffff8f638b60 RCX: ccccccccccccd000 [ 111.618297][ C0] RDX: ffff888207e40578 RSI: ffffea000a76d630 RDI: 000000001025d578 [ 111.626251][ C0] RBP: ffffffff8f60fdb0 R08: ffff88812fc30fc0 R09: ffff88821f4a91c2 [ 111.634377][ C0] R10: 00000019f71c2800 R11: ffffffff8e535bb0 R12: 0000000000000000 [ 111.642333][ C0] R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff8f638b60 [ 111.650317][ C0] ? __cpuidle_text_start+0x8/0x8 [ 111.655468][ C0] ? __cpuidle_text_start+0x8/0x8 [ 111.660579][ C0] arch_cpu_idle+0x25/0x30 [ 111.664978][ C0] do_idle+0x1d7/0x790 [ 111.669048][ C0] cpu_startup_entry+0x45/0x50 [ 111.673811][ C0] rest_init+0x1be/0x1f0 [ 111.678037][ C0] arch_call_rest_init+0x13/0x15 [ 111.683323][ C0] start_kernel+0x991/0xb61 [ 111.687850][ C0] x86_64_start_reservations+0x18/0x2e [ 111.693415][ C0] x86_64_start_kernel+0x81/0x84 [ 111.699092][ C0] secondary_startup_64+0xa4/0xb0 [ 111.704572][ C0] [ 111.706889][ C0] Uninit was created at: [ 111.711821][ C0] kmsan_internal_poison_shadow+0x53/0x100 [ 111.718393][ C0] kmsan_slab_free+0x8d/0x100 [ 111.723328][ C0] kfree+0x4c1/0x2db0 [ 111.727296][ C0] skb_release_data+0x7de/0x9d0 [ 111.732264][ C0] __kfree_skb+0x8a/0x210 [ 111.736797][ C0] consume_skb+0x2b0/0x2e0 [ 111.741224][ C0] skb_free_datagram+0x52/0x180 [ 111.746239][ C0] netlink_recvmsg+0xd2d/0x18e0 [ 111.751262][ C0] sock_recvmsg+0x3b3/0x3c0 [ 111.755778][ C0] ___sys_recvmsg+0x461/0x11e0 [ 111.760738][ C0] __se_sys_recvmsg+0x2fa/0x450 [ 111.766102][ C0] __x64_sys_recvmsg+0x4a/0x70 [ 111.771748][ C0] do_syscall_64+0xbc/0xf0 [ 111.776278][ C0] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 111.782166][ C0] ===================================================== [ 111.790130][ C0] Disabling lock debugging due to kernel taint [ 111.797945][ C0] Kernel panic - not syncing: panic_on_warn set ... [ 111.806306][ C0] CPU: 0 PID: 0 Comm: swapper/0 Tainted: G B 5.3.0-rc7+ #0 [ 111.815533][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 111.825862][ C0] Call Trace: [ 111.829139][ C0] [ 111.832000][ C0] dump_stack+0x191/0x1f0 [ 111.836440][ C0] panic+0x3c9/0xc1e [ 111.840348][ C0] kmsan_report+0x2a2/0x2b0 [ 111.845998][ C0] __msan_warning+0x73/0xe0 [ 111.850816][ C0] __run_timers+0xb99/0x11a0 [ 111.855424][ C0] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 111.861593][ C0] ? timers_dead_cpu+0x9d0/0x9d0 [ 111.866527][ C0] ? kmsan_get_shadow_origin_ptr+0x6e/0x4c0 [ 111.872427][ C0] run_timer_softirq+0x2d/0x50 [ 111.877312][ C0] ? timers_dead_cpu+0x9d0/0x9d0 [ 111.882407][ C0] __do_softirq+0x4a1/0x83a [ 111.887073][ C0] irq_exit+0x230/0x280 [ 111.891336][ C0] exiting_irq+0xe/0x10 [ 111.895500][ C0] smp_apic_timer_interrupt+0x48/0x70 [ 111.900999][ C0] apic_timer_interrupt+0x2e/0x40 [ 111.906128][ C0] [ 111.909073][ C0] RIP: 0010:default_idle+0x53/0x90 [ 111.914190][ C0] Code: 13 ee eb f2 44 8b 35 94 79 d2 01 48 c7 c7 78 d5 25 90 e8 c0 9b b1 f3 83 38 00 75 31 45 85 f6 7e 07 0f 00 2d 8f f3 4d 00 fb f4 <65> 8b 35 2e 57 af 71 c7 03 00 00 00 00 c7 43 08 00 00 00 00 bf ff [ 111.933789][ C0] RSP: 0018:ffffffff8f60fda0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 111.942191][ C0] RAX: ffff888217c47578 RBX: ffffffff8f638b60 RCX: ccccccccccccd000 [ 111.950394][ C0] RDX: ffff888207e40578 RSI: ffffea000a76d630 RDI: 000000001025d578 [ 111.958437][ C0] RBP: ffffffff8f60fdb0 R08: ffff88812fc30fc0 R09: ffff88821f4a91c2 [ 111.966416][ C0] R10: 00000019f71c2800 R11: ffffffff8e535bb0 R12: 0000000000000000 [ 111.974932][ C0] R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff8f638b60 [ 111.982937][ C0] ? __cpuidle_text_start+0x8/0x8 [ 111.987962][ C0] ? __cpuidle_text_start+0x8/0x8 [ 111.993077][ C0] arch_cpu_idle+0x25/0x30 [ 111.997486][ C0] do_idle+0x1d7/0x790 [ 112.001596][ C0] cpu_startup_entry+0x45/0x50 [ 112.006491][ C0] rest_init+0x1be/0x1f0 [ 112.010739][ C0] arch_call_rest_init+0x13/0x15 [ 112.015681][ C0] start_kernel+0x991/0xb61 [ 112.020220][ C0] x86_64_start_reservations+0x18/0x2e [ 112.025682][ C0] x86_64_start_kernel+0x81/0x84 [ 112.030616][ C0] secondary_startup_64+0xa4/0xb0 [ 112.037099][ C0] Kernel Offset: disabled [ 112.041490][ C0] Rebooting in 86400 seconds..