Warning: Permanently added '10.128.0.102' (ECDSA) to the list of known hosts. 2019/08/07 17:50:36 parsed 1 programs 2019/08/07 17:50:36 executed programs: 0 [ 36.687647][ T1883] cgroup1: Unknown subsys name 'perf_event' [ 36.687710][ T1882] cgroup1: Unknown subsys name 'perf_event' [ 36.694604][ T1885] cgroup1: Unknown subsys name 'perf_event' [ 36.700944][ T1882] cgroup1: Unknown subsys name 'net_cls' [ 36.709196][ T1883] cgroup1: Unknown subsys name 'net_cls' [ 36.713226][ T1887] cgroup1: Unknown subsys name 'perf_event' [ 36.720834][ T1885] cgroup1: Unknown subsys name 'net_cls' [ 36.724579][ T1887] cgroup1: Unknown subsys name 'net_cls' [ 36.731684][ T1889] cgroup1: Unknown subsys name 'perf_event' [ 36.751489][ T1889] cgroup1: Unknown subsys name 'net_cls' [ 36.764951][ T1898] cgroup1: Unknown subsys name 'perf_event' [ 36.776970][ T1898] cgroup1: Unknown subsys name 'net_cls' [ 39.653568][ T89] usb 5-1: new high-speed USB device number 2 using dummy_hcd [ 39.693627][ T2161] usb 6-1: new high-speed USB device number 2 using dummy_hcd [ 39.773710][ T5] usb 4-1: new high-speed USB device number 2 using dummy_hcd [ 39.803486][ T2873] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 39.833494][ T2880] usb 3-1: new high-speed USB device number 2 using dummy_hcd [ 39.843572][ T12] usb 2-1: new high-speed USB device number 2 using dummy_hcd [ 39.903495][ T89] usb 5-1: Using ep0 maxpacket: 16 [ 39.933485][ T2161] usb 6-1: Using ep0 maxpacket: 16 [ 40.013576][ T5] usb 4-1: Using ep0 maxpacket: 16 [ 40.033652][ T89] usb 5-1: config 0 has an invalid interface number: 234 but max is 0 [ 40.041954][ T89] usb 5-1: config 0 has no interface number 0 [ 40.043535][ T2873] usb 1-1: Using ep0 maxpacket: 16 [ 40.048571][ T89] usb 5-1: config 0 interface 234 altsetting 0 endpoint 0x8D has an invalid bInterval 255, changing to 11 [ 40.053955][ T2161] usb 6-1: config 0 has an invalid interface number: 234 but max is 0 [ 40.064642][ T89] usb 5-1: config 0 interface 234 altsetting 0 endpoint 0x7 has invalid maxpacket 1843, setting to 1024 [ 40.064656][ T89] usb 5-1: config 0 interface 234 altsetting 0 bulk endpoint 0x7 has invalid maxpacket 1024 [ 40.064671][ T89] usb 5-1: config 0 interface 234 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 0 [ 40.064696][ T89] usb 5-1: New USB device found, idVendor=0421, idProduct=0486, bcdDevice=14.d7 [ 40.064709][ T89] usb 5-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 40.069230][ T89] usb 5-1: config 0 descriptor?? [ 40.072874][ T2161] usb 6-1: config 0 has no interface number 0 [ 40.073416][ T2161] usb 6-1: config 0 interface 234 altsetting 0 endpoint 0x8D has an invalid bInterval 255, changing to 11 [ 40.137418][ T89] rndis_wlan 5-1:0.234: Refcount before probe: 3 [ 40.148422][ T2161] usb 6-1: config 0 interface 234 altsetting 0 endpoint 0x7 has invalid maxpacket 1843, setting to 1024 [ 40.148437][ T2161] usb 6-1: config 0 interface 234 altsetting 0 bulk endpoint 0x7 has invalid maxpacket 1024 [ 40.148452][ T2161] usb 6-1: config 0 interface 234 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 0 [ 40.148476][ T2161] usb 6-1: New USB device found, idVendor=0421, idProduct=0486, bcdDevice=14.d7 [ 40.148491][ T2161] usb 6-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 40.165690][ T89] rndis_wlan 5-1:0.234: invalid descriptor buffer length [ 40.166423][ T2880] usb 3-1: Using ep0 maxpacket: 16 [ 40.176494][ T89] usb 5-1: bad CDC descriptors [ 40.186864][ T12] usb 2-1: Using ep0 maxpacket: 16 [ 40.196919][ T89] rndis_wlan 5-1:0.234: Refcount after probe: 3 [ 40.214813][ T2161] usb 6-1: config 0 descriptor?? [ 40.219664][ T89] rndis_host 5-1:0.234: Refcount before probe: 3 [ 40.243619][ T5] usb 4-1: config 0 has an invalid interface number: 234 but max is 0 [ 40.244058][ T89] rndis_host 5-1:0.234: invalid descriptor buffer length [ 40.252107][ T5] usb 4-1: config 0 has no interface number 0 [ 40.259148][ T89] usb 5-1: bad CDC descriptors [ 40.259600][ T89] rndis_host 5-1:0.234: Refcount after probe: 3 [ 40.265544][ T2873] usb 1-1: config 0 has an invalid interface number: 234 but max is 0 [ 40.270346][ T89] cdc_acm 5-1:0.234: Refcount before probe: 3 [ 40.276328][ T2873] usb 1-1: config 0 has no interface number 0 [ 40.280057][ T2161] rndis_wlan 6-1:0.234: Refcount before probe: 3 [ 40.284514][ T89] cdc_acm 5-1:0.234: invalid descriptor buffer length [ 40.284523][ T89] cdc_acm 5-1:0.234: No union descriptor, testing for castrated device [ 40.285322][ T89] cdc_acm 5-1:0.234: Refcount after probe: 2 [ 40.293572][ T2873] usb 1-1: config 0 interface 234 altsetting 0 endpoint 0x8D has an invalid bInterval 255, changing to 11 [ 40.297486][ T89] cdc_acm: probe of 5-1:0.234 failed with error -12 [ 40.303193][ T2873] usb 1-1: config 0 interface 234 altsetting 0 endpoint 0x7 has invalid maxpacket 1843, setting to 1024 [ 40.303208][ T2873] usb 1-1: config 0 interface 234 altsetting 0 bulk endpoint 0x7 has invalid maxpacket 1024 [ 40.303222][ T2873] usb 1-1: config 0 interface 234 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 0 [ 40.303246][ T2873] usb 1-1: New USB device found, idVendor=0421, idProduct=0486, bcdDevice=14.d7 [ 40.310977][ T89] usbtest 5-1:0.234: Refcount before probe: 2 [ 40.318385][ T2873] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 40.324667][ T5] usb 4-1: config 0 interface 234 altsetting 0 endpoint 0x8D has an invalid bInterval 255, changing to 11 [ 40.335796][ T89] usbtest 5-1:0.234: Refcount after probe: 2 [ 40.340461][ T89] usb 5-1: USB disconnect, device number 2 [ 40.342533][ T5] usb 4-1: config 0 interface 234 altsetting 0 endpoint 0x7 has invalid maxpacket 1843, setting to 1024 [ 40.342548][ T5] usb 4-1: config 0 interface 234 altsetting 0 bulk endpoint 0x7 has invalid maxpacket 1024 [ 40.342561][ T5] usb 4-1: config 0 interface 234 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 0 [ 40.342584][ T5] usb 4-1: New USB device found, idVendor=0421, idProduct=0486, bcdDevice=14.d7 [ 40.356293][ T89] ================================================================== [ 40.363892][ T5] usb 4-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 40.373704][ T89] BUG: KASAN: use-after-free in __lock_acquire+0x3a5d/0x5340 [ 40.373713][ T89] Read of size 8 at addr ffff8881d4b1e710 by task kworker/1:2/89 [ 40.373714][ T89] [ 40.373725][ T89] CPU: 1 PID: 89 Comm: kworker/1:2 Not tainted 5.2.0-rc6+ #1 [ 40.373729][ T89] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 40.373740][ T89] Workqueue: usb_hub_wq hub_event [ 40.384257][ T2161] rndis_wlan 6-1:0.234: invalid descriptor buffer length [ 40.388773][ T89] Call Trace: [ 40.388794][ T89] dump_stack+0xca/0x13e [ 40.396843][ T2161] usb 6-1: bad CDC descriptors [ 40.408089][ T89] ? __lock_acquire+0x3a5d/0x5340 [ 40.408098][ T89] ? __lock_acquire+0x3a5d/0x5340 [ 40.408109][ T89] print_address_description+0x67/0x231 [ 40.408122][ T89] ? __lock_acquire+0x3a5d/0x5340 [ 40.416973][ T12] usb 2-1: config 0 has an invalid interface number: 234 but max is 0 [ 40.419870][ T89] ? __lock_acquire+0x3a5d/0x5340 [ 40.431193][ T12] usb 2-1: config 0 has no interface number 0 [ 40.441164][ T89] __kasan_report.cold+0x1a/0x32 [ 40.441176][ T89] ? __lock_acquire+0x3a5d/0x5340 [ 40.441185][ T89] kasan_report+0xe/0x20 [ 40.441199][ T89] __lock_acquire+0x3a5d/0x5340 [ 40.451198][ T2880] usb 3-1: config 0 has an invalid interface number: 234 but max is 0 [ 40.460145][ T89] ? mark_held_locks+0x9f/0xe0 [ 40.460158][ T89] ? _raw_spin_unlock_irqrestore+0x3e/0x50 [ 40.460171][ T89] ? mark_held_locks+0xe0/0xe0 [ 40.468223][ T2880] usb 3-1: config 0 has no interface number 0 [ 40.476154][ T89] ? save_stack+0x4c/0x80 [ 40.476164][ T89] ? save_stack+0x1b/0x80 [ 40.476179][ T89] ? __kasan_slab_free+0x130/0x180 [ 40.486028][ T2873] usb 1-1: config 0 descriptor?? [ 40.492778][ T89] ? kfree+0xd7/0x280 [ 40.495588][ T2880] usb 3-1: config 0 interface 234 altsetting 0 endpoint 0x8D has an invalid bInterval 255, changing to 11 [ 40.502538][ T89] ? kfree_const+0x51/0x60 [ 40.502550][ T89] ? kobject_put+0x18c/0x280 [ 40.502561][ T89] ? put_device+0x1b/0x30 [ 40.502574][ T89] ? klist_put+0xce/0x170 [ 40.512690][ T2880] usb 3-1: config 0 interface 234 altsetting 0 endpoint 0x7 has invalid maxpacket 1843, setting to 1024 [ 40.517614][ T89] ? bus_remove_device+0x3a4/0x4a0 [ 40.517623][ T89] ? device_del+0x460/0xb80 [ 40.517633][ T89] ? usb_disable_device+0x211/0x690 [ 40.517642][ T89] ? usb_disconnect+0x284/0x830 [ 40.517651][ T89] ? hub_event+0x13bd/0x3550 [ 40.517662][ T89] ? process_one_work+0x905/0x1570 [ 40.517672][ T89] ? worker_thread+0x7ab/0xe20 [ 40.517687][ T89] lock_acquire+0x100/0x2b0 [ 40.524725][ T2880] usb 3-1: config 0 interface 234 altsetting 0 bulk endpoint 0x7 has invalid maxpacket 1024 [ 40.528151][ T89] ? device_release_driver_internal+0x23/0x4c0 [ 40.532377][ T2880] usb 3-1: config 0 interface 234 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 0 [ 40.537105][ T89] ? device_release_driver_internal+0x23/0x4c0 [ 40.537114][ T89] __mutex_lock+0xf9/0x12b0 [ 40.537125][ T89] ? device_release_driver_internal+0x23/0x4c0 [ 40.537134][ T89] ? device_release_driver_internal+0x23/0x4c0 [ 40.537147][ T89] ? mark_held_locks+0x9f/0xe0 [ 40.542155][ T2880] usb 3-1: New USB device found, idVendor=0421, idProduct=0486, bcdDevice=14.d7 [ 40.547129][ T89] ? lockdep_hardirqs_on+0x379/0x580 [ 40.547138][ T89] ? mutex_trylock+0x1a0/0x1a0 [ 40.547147][ T89] ? lockdep_hardirqs_on+0x379/0x580 [ 40.547161][ T89] ? __kasan_slab_free+0x145/0x180 [ 40.552675][ T2880] usb 3-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 40.557668][ T89] ? kfree_const+0x51/0x60 [ 40.557677][ T89] ? kfree+0xd7/0x280 [ 40.557687][ T89] ? dev_attr_show+0x90/0x90 [ 40.557702][ T89] ? device_release_driver_internal+0x23/0x4c0 [ 40.566314][ T12] usb 2-1: config 0 interface 234 altsetting 0 endpoint 0x8D has an invalid bInterval 255, changing to 11 [ 40.570842][ T89] device_release_driver_internal+0x23/0x4c0 [ 40.570853][ T89] bus_remove_device+0x2dc/0x4a0 [ 40.570865][ T89] device_del+0x460/0xb80 [ 40.576962][ T12] usb 2-1: config 0 interface 234 altsetting 0 endpoint 0x7 has invalid maxpacket 1843, setting to 1024 [ 40.581997][ T89] ? __device_links_no_driver+0x240/0x240 [ 40.587034][ T12] usb 2-1: config 0 interface 234 altsetting 0 bulk endpoint 0x7 has invalid maxpacket 1024 [ 40.591234][ T89] ? usb_remove_ep_devs+0x3e/0x80 [ 40.591247][ T89] ? remove_intf_ep_devs+0x13f/0x1d0 [ 40.596112][ T12] usb 2-1: config 0 interface 234 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 0 [ 40.604212][ T89] usb_disable_device+0x211/0x690 [ 40.604225][ T89] usb_disconnect+0x284/0x830 [ 40.604240][ T89] hub_event+0x13bd/0x3550 [ 40.608992][ T12] usb 2-1: New USB device found, idVendor=0421, idProduct=0486, bcdDevice=14.d7 [ 40.614755][ T89] ? hub_port_debounce+0x260/0x260 [ 40.614768][ T89] process_one_work+0x905/0x1570 [ 40.614779][ T89] ? pwq_dec_nr_in_flight+0x310/0x310 [ 40.614794][ T89] ? do_raw_spin_lock+0x11a/0x280 [ 40.619527][ T12] usb 2-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 40.625658][ T89] worker_thread+0x7ab/0xe20 [ 40.625670][ T89] ? process_one_work+0x1570/0x1570 [ 40.625678][ T89] kthread+0x30b/0x410 [ 40.625691][ T89] ? kthread_park+0x1a0/0x1a0 [ 40.631228][ T5] usb 4-1: config 0 descriptor?? [ 40.634295][ T89] ret_from_fork+0x24/0x30 [ 40.634301][ T89] [ 40.634305][ T89] Allocated by task 89: [ 40.634317][ T89] save_stack+0x1b/0x80 [ 40.634327][ T89] __kasan_kmalloc.constprop.0+0xbf/0xd0 [ 40.634336][ T89] usb_set_configuration+0x2c4/0x1670 [ 40.634344][ T89] generic_probe+0x9d/0xd5 [ 40.634358][ T89] usb_probe_device+0x99/0x100 [ 40.640485][ T12] usb 2-1: config 0 descriptor?? [ 40.644446][ T89] really_probe+0x281/0x660 [ 40.644455][ T89] driver_probe_device+0x104/0x210 [ 40.644463][ T89] __device_attach_driver+0x1c2/0x220 [ 40.644471][ T89] bus_for_each_drv+0x15c/0x1e0 [ 40.644479][ T89] __device_attach+0x217/0x360 [ 40.644487][ T89] bus_probe_device+0x1e4/0x290 [ 40.644496][ T89] device_add+0xae6/0x16f0 [ 40.644507][ T89] usb_new_device.cold+0x6a4/0xe61 [ 40.644520][ T89] hub_event+0x1abd/0x3550 [ 40.649762][ T2880] usb 3-1: config 0 descriptor?? [ 40.659752][ T89] process_one_work+0x905/0x1570 [ 40.659761][ T89] worker_thread+0x96/0xe20 [ 40.659769][ T89] kthread+0x30b/0x410 [ 40.659779][ T89] ret_from_fork+0x24/0x30 [ 40.659782][ T89] [ 40.659786][ T89] Freed by task 89: [ 40.659797][ T89] save_stack+0x1b/0x80 [ 40.659805][ T89] __kasan_slab_free+0x130/0x180 [ 40.659812][ T89] kfree+0xd7/0x280 [ 40.659823][ T89] device_release+0x71/0x200 [ 40.659833][ T89] kobject_put+0x171/0x280 [ 40.659841][ T89] put_device+0x1b/0x30 [ 40.659848][ T89] klist_put+0xce/0x170 [ 40.659856][ T89] bus_remove_device+0x3a4/0x4a0 [ 40.659868][ T89] device_del+0x460/0xb80 [ 40.673958][ T2161] rndis_wlan 6-1:0.234: Refcount after probe: 3 [ 40.677499][ T89] usb_disable_device+0x211/0x690 [ 40.677509][ T89] usb_disconnect+0x284/0x830 [ 40.677523][ T89] hub_event+0x13bd/0x3550 [ 40.690865][ T2873] rndis_wlan 1-1:0.234: Refcount before probe: 3 [ 40.693721][ T89] process_one_work+0x905/0x1570 [ 40.693730][ T89] worker_thread+0x7ab/0xe20 [ 40.693738][ T89] kthread+0x30b/0x410 [ 40.693747][ T89] ret_from_fork+0x24/0x30 [ 40.693749][ T89] [ 40.693757][ T89] The buggy address belongs to the object at ffff8881d4b1e600 [ 40.693757][ T89] which belongs to the cache kmalloc-2k of size 2048 [ 40.693764][ T89] The buggy address is located 272 bytes inside of [ 40.693764][ T89] 2048-byte region [ffff8881d4b1e600, ffff8881d4b1ee00) [ 40.693773][ T89] The buggy address belongs to the page: [ 40.699028][ T5] rndis_wlan 4-1:0.234: Refcount before probe: 3 [ 40.703430][ T89] page:ffffea000752c600 refcount:1 mapcount:0 mapping:ffff8881dac02800 index:0x0 compound_mapcount: 0 [ 40.703441][ T89] flags: 0x200000000010200(slab|head) [ 40.703454][ T89] raw: 0200000000010200 ffffea0007536e00 0000000600000006 ffff8881dac02800 [ 40.703464][ T89] raw: 0000000000000000 00000000800f000f 00000001ffffffff 0000000000000000 [ 40.703468][ T89] page dumped because: kasan: bad access detected [ 40.703469][ T89] [ 40.703472][ T89] Memory state around the buggy address: [ 40.703479][ T89] ffff8881d4b1e600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 40.703486][ T89] ffff8881d4b1e680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 40.703496][ T89] >ffff8881d4b1e700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 40.708988][ T12] rndis_wlan 2-1:0.234: Refcount before probe: 3 [ 40.712876][ T89] ^ [ 40.712887][ T89] ffff8881d4b1e780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 40.724223][ T2880] rndis_wlan 3-1:0.234: Refcount before probe: 3 [ 40.727394][ T89] ffff8881d4b1e800: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 40.727398][ T89] ================================================================== [ 40.727411][ T89] Disabling lock debugging due to kernel taint [ 40.741806][ T2161] rndis_host 6-1:0.234: Refcount before probe: 3 [ 40.743669][ T89] Kernel panic - not syncing: panic_on_warn set ... [ 40.743681][ T89] CPU: 1 PID: 89 Comm: kworker/1:2 Tainted: G B 5.2.0-rc6+ #1 [ 40.743686][ T89] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 40.743700][ T89] Workqueue: usb_hub_wq hub_event [ 40.743704][ T89] Call Trace: [ 40.743722][ T89] dump_stack+0xca/0x13e [ 40.755241][ T2161] rndis_host 6-1:0.234: invalid descriptor buffer length [ 40.759722][ T89] panic+0x292/0x6c9 [ 40.759737][ T89] ? __warn_printk+0xf3/0xf3 [ 40.764244][ T2161] usb 6-1: bad CDC descriptors [ 40.770345][ T89] ? lock_downgrade+0x630/0x630 [ 40.776957][ T2161] rndis_host 6-1:0.234: Refcount after probe: 3 [ 40.781318][ T89] ? print_shadow_for_address+0xb8/0x114 [ 40.781334][ T89] ? trace_hardirqs_off+0x50/0x1c0 [ 40.790522][ T2161] cdc_acm 6-1:0.234: Refcount before probe: 3 [ 40.795578][ T89] ? __lock_acquire+0x3a5d/0x5340 [ 40.795589][ T89] end_report+0x43/0x49 [ 40.795598][ T89] ? __lock_acquire+0x3a5d/0x5340 [ 40.795612][ T89] __kasan_report.cold+0xd/0x32 [ 40.800344][ T2161] cdc_acm 6-1:0.234: invalid descriptor buffer length [ 40.805626][ T89] ? __lock_acquire+0x3a5d/0x5340 [ 40.805636][ T89] kasan_report+0xe/0x20 [ 40.805649][ T89] __lock_acquire+0x3a5d/0x5340 [ 40.810729][ T2161] cdc_acm 6-1:0.234: No union descriptor, testing for castrated device [ 40.818791][ T89] ? mark_held_locks+0x9f/0xe0 [ 40.818802][ T89] ? _raw_spin_unlock_irqrestore+0x3e/0x50 [ 40.818815][ T89] ? mark_held_locks+0xe0/0xe0 [ 40.823748][ T2161] cdc_acm 6-1:0.234: Refcount after probe: 2 [ 40.827181][ T89] ? save_stack+0x4c/0x80 [ 40.827195][ T89] ? save_stack+0x1b/0x80 [ 40.831827][ T2161] cdc_acm: probe of 6-1:0.234 failed with error -12 [ 40.837993][ T89] ? __kasan_slab_free+0x130/0x180 [ 40.838002][ T89] ? kfree+0xd7/0x280 [ 40.838011][ T89] ? kfree_const+0x51/0x60 [ 40.838021][ T89] ? kobject_put+0x18c/0x280 [ 40.838031][ T89] ? put_device+0x1b/0x30 [ 40.838038][ T89] ? klist_put+0xce/0x170 [ 40.838046][ T89] ? bus_remove_device+0x3a4/0x4a0 [ 40.838058][ T89] ? device_del+0x460/0xb80 [ 40.865055][ T2161] usbtest 6-1:0.234: Refcount before probe: 2 [ 40.875774][ T89] ? usb_disable_device+0x211/0x690 [ 40.875784][ T89] ? usb_disconnect+0x284/0x830 [ 40.875793][ T89] ? hub_event+0x13bd/0x3550 [ 40.875811][ T89] ? process_one_work+0x905/0x1570 [ 40.881537][ T2161] usbtest 6-1:0.234: Refcount after probe: 2 [ 40.891589][ T89] ? worker_thread+0x7ab/0xe20 [ 40.891599][ T89] lock_acquire+0x100/0x2b0 [ 40.891613][ T89] ? device_release_driver_internal+0x23/0x4c0 [ 40.891622][ T89] ? device_release_driver_internal+0x23/0x4c0 [ 40.891636][ T89] __mutex_lock+0xf9/0x12b0 [ 40.901347][ T2161] usb 6-1: USB disconnect, device number 2 [ 40.901908][ T89] ? device_release_driver_internal+0x23/0x4c0 [ 40.913126][ T2161] ------------[ cut here ]------------ [ 40.916822][ T89] ? device_release_driver_internal+0x23/0x4c0 [ 40.916834][ T89] ? mark_held_locks+0x9f/0xe0 [ 40.916843][ T89] ? lockdep_hardirqs_on+0x379/0x580 [ 40.916858][ T89] ? mutex_trylock+0x1a0/0x1a0 [ 40.921525][ T2161] refcount_t: underflow; use-after-free. [ 40.925911][ T89] ? lockdep_hardirqs_on+0x379/0x580 [ 40.925923][ T89] ? __kasan_slab_free+0x145/0x180 [ 40.925933][ T89] ? kfree_const+0x51/0x60 [ 40.925946][ T89] ? kfree+0xd7/0x280 [ 40.935013][ T2161] WARNING: CPU: 0 PID: 2161 at lib/refcount.c:190 refcount_sub_and_test_checked+0x19f/0x1c0 [ 40.940107][ T89] ? dev_attr_show+0x90/0x90 [ 41.698268][ T89] ? device_release_driver_internal+0x23/0x4c0 [ 41.704414][ T89] device_release_driver_internal+0x23/0x4c0 [ 41.710564][ T89] bus_remove_device+0x2dc/0x4a0 [ 41.715477][ T89] device_del+0x460/0xb80 [ 41.719783][ T89] ? __device_links_no_driver+0x240/0x240 [ 41.725488][ T89] ? usb_remove_ep_devs+0x3e/0x80 [ 41.730500][ T89] ? remove_intf_ep_devs+0x13f/0x1d0 [ 41.735759][ T89] usb_disable_device+0x211/0x690 [ 41.740766][ T89] usb_disconnect+0x284/0x830 [ 41.745530][ T89] hub_event+0x13bd/0x3550 [ 41.750023][ T89] ? hub_port_debounce+0x260/0x260 [ 41.755199][ T89] process_one_work+0x905/0x1570 [ 41.760125][ T89] ? pwq_dec_nr_in_flight+0x310/0x310 [ 41.765483][ T89] ? do_raw_spin_lock+0x11a/0x280 [ 41.770483][ T89] worker_thread+0x7ab/0xe20 [ 41.775056][ T89] ? process_one_work+0x1570/0x1570 [ 41.780239][ T89] kthread+0x30b/0x410 [ 41.784310][ T89] ? kthread_park+0x1a0/0x1a0 [ 41.788970][ T89] ret_from_fork+0x24/0x30 [ 42.866777][ T89] Shutting down cpus with NMI [ 42.871509][ T89] Kernel Offset: disabled [ 42.875817][ T89] Rebooting in 86400 seconds..