[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 82.627213][ T32] audit: type=1800 audit(1570320530.676:25): pid=11812 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 82.650449][ T32] audit: type=1800 audit(1570320530.696:26): pid=11812 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 82.685844][ T32] audit: type=1800 audit(1570320530.726:27): pid=11812 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 '10.128.0.197' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 112.071946][ T3372] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 112.432195][ T3372] usb 1-1: config 0 has an invalid interface number: 175 but max is 0 [ 112.440475][ T3372] usb 1-1: config 0 has an invalid descriptor of length 135, skipping remainder of the config [ 112.450953][ T3372] usb 1-1: config 0 has no interface number 0 [ 112.457974][ T3372] usb 1-1: config 0 interface 175 altsetting 0 endpoint 0x84 has invalid maxpacket 1191, setting to 1024 [ 112.469360][ T3372] usb 1-1: config 0 interface 175 altsetting 0 bulk endpoint 0x84 has invalid maxpacket 1024 [ 112.479761][ T3372] usb 1-1: config 0 interface 175 altsetting 0 has 1 endpoint descriptor, different from the interface descriptor's value: 2 [ 112.493016][ T3372] usb 1-1: New USB device found, idVendor=1618, idProduct=9113, bcdDevice=df.61 [ 112.502211][ T3372] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 112.512042][ T3372] usb 1-1: config 0 descriptor?? [ 112.556558][ T3372] rsi_91x: rsi_probe: Initialized os intf ops executing program [ 112.992099][ T3372] rsi_91x: rsi_usb_reg_read: Reg read failed with error code :-71 [ 113.000104][ T3372] rsi_91x: rsi_hal_prepare_fwload: REGOUT read failed [ 113.007890][ T3372] rsi_91x: rsi_probe: Failed in device init [ 113.015238][ T3372] rsi_91x: rsi_probe: Failed in probe...Exiting [ 113.021561][ T3372] RSI-USB WLAN: probe of 1-1:0.175 failed with error -71 [ 113.032877][ T3372] usb 1-1: USB disconnect, device number 2 [ 113.392011][ T3372] usb 1-1: new high-speed USB device number 3 using dummy_hcd [ 113.752096][ T3372] usb 1-1: config 0 has an invalid interface number: 175 but max is 0 [ 113.760430][ T3372] usb 1-1: config 0 has an invalid descriptor of length 135, skipping remainder of the config [ 113.770879][ T3372] usb 1-1: config 0 has no interface number 0 [ 113.777202][ T3372] usb 1-1: config 0 interface 175 altsetting 0 endpoint 0x84 has invalid maxpacket 1191, setting to 1024 [ 113.788563][ T3372] usb 1-1: config 0 interface 175 altsetting 0 bulk endpoint 0x84 has invalid maxpacket 1024 [ 113.798870][ T3372] usb 1-1: config 0 interface 175 altsetting 0 has 1 endpoint descriptor, different from the interface descriptor's value: 2 [ 113.812024][ T3372] usb 1-1: New USB device found, idVendor=1618, idProduct=9113, bcdDevice=df.61 [ 113.821091][ T3372] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 113.830791][ T3372] usb 1-1: config 0 descriptor?? [ 113.876671][ T3372] rsi_91x: rsi_probe: Initialized os intf ops executing program [ 114.312057][ T3372] rsi_91x: rsi_usb_reg_read: Reg read failed with error code :-71 [ 114.320097][ T3372] rsi_91x: rsi_hal_prepare_fwload: REGOUT read failed [ 114.327090][ T3372] rsi_91x: rsi_probe: Failed in device init [ 114.334338][ T3372] rsi_91x: rsi_probe: Failed in probe...Exiting [ 114.340727][ T3372] RSI-USB WLAN: probe of 1-1:0.175 failed with error -71 [ 114.351622][ T3372] usb 1-1: USB disconnect, device number 3 [ 114.701918][ T3372] usb 1-1: new high-speed USB device number 4 using dummy_hcd [ 114.821913][ C0] ===================================================== [ 114.829104][ C0] BUG: KMSAN: uninit-value in run_timer_softirq+0x2d/0x50 [ 114.836444][ C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.3.0-rc7+ #0 [ 114.843547][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 114.853618][ C0] Call Trace: [ 114.856894][ C0] [ 114.859755][ C0] dump_stack+0x191/0x1f0 [ 114.864097][ C0] kmsan_report+0x13a/0x2b0 [ 114.868590][ C0] __msan_warning+0x73/0xe0 [ 114.873081][ C0] __run_timers+0xb99/0x11a0 [ 114.877684][ C0] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 114.884002][ C0] ? timers_dead_cpu+0x9d0/0x9d0 [ 114.888972][ C0] ? kmsan_get_shadow_origin_ptr+0x6e/0x4c0 [ 114.894874][ C0] run_timer_softirq+0x2d/0x50 [ 114.899975][ C0] ? timers_dead_cpu+0x9d0/0x9d0 [ 114.904896][ C0] __do_softirq+0x4a1/0x83a [ 114.909407][ C0] irq_exit+0x230/0x280 [ 114.913568][ C0] exiting_irq+0xe/0x10 [ 114.917718][ C0] smp_apic_timer_interrupt+0x48/0x70 [ 114.923191][ C0] apic_timer_interrupt+0x2e/0x40 [ 114.928317][ C0] [ 114.931248][ C0] RIP: 0010:default_idle+0x53/0x90 [ 114.936354][ 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 [ 114.955954][ C0] RSP: 0018:ffffffff8f60fda0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 114.964355][ C0] RAX: ffff888217c47578 RBX: ffffffff8f638b60 RCX: ccccccccccccd000 [ 114.972320][ C0] RDX: ffff888207e40578 RSI: ffffea000a76d630 RDI: 000000001025d578 [ 114.980279][ C0] RBP: ffffffff8f60fdb0 R08: ffff88812fc30fc0 R09: ffff88821f4a91c2 [ 114.988242][ C0] R10: 0000001abf61b000 R11: ffffffff8e535bb0 R12: 0000000000000000 [ 114.996226][ C0] R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff8f638b60 [ 115.004551][ C0] ? __cpuidle_text_start+0x8/0x8 [ 115.009569][ C0] ? __cpuidle_text_start+0x8/0x8 [ 115.014874][ C0] arch_cpu_idle+0x25/0x30 [ 115.019291][ C0] do_idle+0x1d7/0x790 [ 115.023373][ C0] cpu_startup_entry+0x45/0x50 [ 115.028140][ C0] rest_init+0x1be/0x1f0 [ 115.032464][ C0] arch_call_rest_init+0x13/0x15 [ 115.037473][ C0] start_kernel+0x991/0xb61 [ 115.042011][ C0] x86_64_start_reservations+0x18/0x2e [ 115.047471][ C0] x86_64_start_kernel+0x81/0x84 [ 115.052393][ C0] secondary_startup_64+0xa4/0xb0 [ 115.057412][ C0] [ 115.059877][ C0] Uninit was created at: [ 115.064347][ C0] kmsan_internal_poison_shadow+0x53/0x100 [ 115.070388][ C0] kmsan_slab_free+0x8d/0x100 [ 115.077701][ C0] kfree+0x4c1/0x2db0 [ 115.081880][ C0] skb_release_data+0x7de/0x9d0 [ 115.086978][ C0] __kfree_skb+0x8a/0x210 [ 115.091294][ C0] consume_skb+0x2b0/0x2e0 [ 115.095754][ C0] skb_free_datagram+0x52/0x180 [ 115.100640][ C0] netlink_recvmsg+0xd2d/0x18e0 [ 115.105705][ C0] sock_recvmsg+0x3b3/0x3c0 [ 115.110224][ C0] ___sys_recvmsg+0x461/0x11e0 [ 115.115087][ C0] __se_sys_recvmsg+0x2fa/0x450 [ 115.119922][ C0] __x64_sys_recvmsg+0x4a/0x70 [ 115.124673][ C0] do_syscall_64+0xbc/0xf0 [ 115.129085][ C0] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 115.134958][ C0] ===================================================== [ 115.141880][ C0] Disabling lock debugging due to kernel taint [ 115.148029][ C0] Kernel panic - not syncing: panic_on_warn set ... [ 115.154609][ C0] CPU: 0 PID: 0 Comm: swapper/0 Tainted: G B 5.3.0-rc7+ #0 [ 115.163101][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 115.173294][ C0] Call Trace: [ 115.176568][ C0] [ 115.179843][ C0] dump_stack+0x191/0x1f0 [ 115.184173][ C0] panic+0x3c9/0xc1e [ 115.188096][ C0] kmsan_report+0x2a2/0x2b0 [ 115.192586][ C0] __msan_warning+0x73/0xe0 [ 115.197083][ C0] __run_timers+0xb99/0x11a0 [ 115.201796][ C0] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 115.207868][ C0] ? timers_dead_cpu+0x9d0/0x9d0 [ 115.212815][ C0] ? kmsan_get_shadow_origin_ptr+0x6e/0x4c0 [ 115.218694][ C0] run_timer_softirq+0x2d/0x50 [ 115.223442][ C0] ? timers_dead_cpu+0x9d0/0x9d0 [ 115.228359][ C0] __do_softirq+0x4a1/0x83a [ 115.232857][ C0] irq_exit+0x230/0x280 [ 115.237206][ C0] exiting_irq+0xe/0x10 [ 115.241368][ C0] smp_apic_timer_interrupt+0x48/0x70 [ 115.246740][ C0] apic_timer_interrupt+0x2e/0x40 [ 115.251762][ C0] [ 115.254742][ C0] RIP: 0010:default_idle+0x53/0x90 [ 115.259855][ 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 [ 115.279453][ C0] RSP: 0018:ffffffff8f60fda0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 115.287851][ C0] RAX: ffff888217c47578 RBX: ffffffff8f638b60 RCX: ccccccccccccd000 [ 115.295845][ C0] RDX: ffff888207e40578 RSI: ffffea000a76d630 RDI: 000000001025d578 [ 115.303903][ C0] RBP: ffffffff8f60fdb0 R08: ffff88812fc30fc0 R09: ffff88821f4a91c2 [ 115.311868][ C0] R10: 0000001abf61b000 R11: ffffffff8e535bb0 R12: 0000000000000000 [ 115.320013][ C0] R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff8f638b60 [ 115.328006][ C0] ? __cpuidle_text_start+0x8/0x8 [ 115.333112][ C0] ? __cpuidle_text_start+0x8/0x8 [ 115.338124][ C0] arch_cpu_idle+0x25/0x30 [ 115.342531][ C0] do_idle+0x1d7/0x790 [ 115.346766][ C0] cpu_startup_entry+0x45/0x50 [ 115.351515][ C0] rest_init+0x1be/0x1f0 [ 115.355860][ C0] arch_call_rest_init+0x13/0x15 [ 115.360785][ C0] start_kernel+0x991/0xb61 [ 115.365280][ C0] x86_64_start_reservations+0x18/0x2e [ 115.370844][ C0] x86_64_start_kernel+0x81/0x84 [ 115.375766][ C0] secondary_startup_64+0xa4/0xb0 [ 115.382325][ C0] Kernel Offset: disabled [ 115.386653][ C0] Rebooting in 86400 seconds..