[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.224' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program syzkaller login: [ 877.307911][ T27] audit: type=1400 audit(1591958202.611:8): avc: denied { execmem } for pid=6831 comm="syz-executor441" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 877.586382][ T2630] usb 6-1: new high-speed USB device number 2 using dummy_hcd [ 877.597242][ T2620] usb 4-1: new high-speed USB device number 2 using dummy_hcd [ 877.637050][ T2511] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 877.646442][ T6841] usb 2-1: new high-speed USB device number 2 using dummy_hcd [ 877.656569][ T6849] usb 5-1: new high-speed USB device number 2 using dummy_hcd [ 877.664131][ T6856] usb 3-1: new high-speed USB device number 2 using dummy_hcd [ 877.836315][ T2620] usb 4-1: Using ep0 maxpacket: 8 [ 877.866339][ T2630] usb 6-1: Using ep0 maxpacket: 8 [ 877.877334][ T2511] usb 1-1: Using ep0 maxpacket: 8 [ 877.896329][ T6841] usb 2-1: Using ep0 maxpacket: 8 [ 877.906392][ T6856] usb 3-1: Using ep0 maxpacket: 8 [ 877.911677][ T6849] usb 5-1: Using ep0 maxpacket: 8 [ 877.956827][ T2620] usb 4-1: config 1 interface 0 altsetting 0 bulk endpoint 0x82 has invalid maxpacket 247 [ 877.967344][ T2620] usb 4-1: config 1 interface 0 altsetting 0 bulk endpoint 0x3 has invalid maxpacket 564 [ 877.978606][ T2620] usb 4-1: config 1 interface 0 altsetting 0 has 2 endpoint descriptors, different from the interface descriptor's value: 3 [ 877.996532][ T2630] usb 6-1: config 1 interface 0 altsetting 0 bulk endpoint 0x82 has invalid maxpacket 247 [ 878.006643][ T2511] usb 1-1: config 1 interface 0 altsetting 0 bulk endpoint 0x82 has invalid maxpacket 247 [ 878.006989][ T2630] usb 6-1: config 1 interface 0 altsetting 0 bulk endpoint 0x3 has invalid maxpacket 564 [ 878.017759][ T2511] usb 1-1: config 1 interface 0 altsetting 0 bulk endpoint 0x3 has invalid maxpacket 564 [ 878.028899][ T2630] usb 6-1: config 1 interface 0 altsetting 0 has 2 endpoint descriptors, different from the interface descriptor's value: 3 [ 878.037364][ T2511] usb 1-1: config 1 interface 0 altsetting 0 has 2 endpoint descriptors, different from the interface descriptor's value: 3 [ 878.062932][ T6849] usb 5-1: config 1 interface 0 altsetting 0 bulk endpoint 0x82 has invalid maxpacket 247 [ 878.066457][ T6841] usb 2-1: config 1 interface 0 altsetting 0 bulk endpoint 0x82 has invalid maxpacket 247 [ 878.072952][ T6856] usb 3-1: config 1 interface 0 altsetting 0 bulk endpoint 0x82 has invalid maxpacket 247 [ 878.083092][ T6841] usb 2-1: config 1 interface 0 altsetting 0 bulk endpoint 0x3 has invalid maxpacket 564 [ 878.093341][ T6849] usb 5-1: config 1 interface 0 altsetting 0 bulk endpoint 0x3 has invalid maxpacket 564 [ 878.107126][ T6841] usb 2-1: config 1 interface 0 altsetting 0 has 2 endpoint descriptors, different from the interface descriptor's value: 3 [ 878.113419][ T6856] usb 3-1: config 1 interface 0 altsetting 0 bulk endpoint 0x3 has invalid maxpacket 564 [ 878.136068][ T6849] usb 5-1: config 1 interface 0 altsetting 0 has 2 endpoint descriptors, different from the interface descriptor's value: 3 [ 878.149412][ T6856] usb 3-1: config 1 interface 0 altsetting 0 has 2 endpoint descriptors, different from the interface descriptor's value: 3 [ 878.166549][ T2620] usb 4-1: New USB device found, idVendor=0424, idProduct=9e00, bcdDevice= 0.40 [ 878.166566][ T2620] usb 4-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 878.166578][ T2620] usb 4-1: Product: syz [ 878.166590][ T2620] usb 4-1: Manufacturer: syz [ 878.166601][ T2620] usb 4-1: SerialNumber: syz [ 878.188011][ T6838] raw-gadget gadget: fail, usb_ep_enable returned -22 [ 878.188148][ T6838] raw-gadget gadget: fail, usb_ep_enable returned -22 [ 878.208468][ T2620] usb 4-1: bad CDC descriptors [ 878.236709][ T2630] usb 6-1: New USB device found, idVendor=0424, idProduct=9e00, bcdDevice= 0.40 [ 878.246060][ T2630] usb 6-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 878.246396][ T2511] usb 1-1: New USB device found, idVendor=0424, idProduct=9e00, bcdDevice= 0.40 [ 878.255941][ T2630] usb 6-1: Product: syz [ 878.267042][ T2511] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 878.269423][ T2630] usb 6-1: Manufacturer: syz [ 878.280158][ T2620] smsc95xx v1.0.6 [ 878.282511][ T2630] usb 6-1: SerialNumber: syz [ 878.286958][ T2511] usb 1-1: Product: syz [ 878.294954][ T2511] usb 1-1: Manufacturer: syz [ 878.300358][ T2511] usb 1-1: SerialNumber: syz [ 878.310735][ T6839] raw-gadget gadget: fail, usb_ep_enable returned -22 [ 878.316486][ T6849] usb 5-1: New USB device found, idVendor=0424, idProduct=9e00, bcdDevice= 0.40 [ 878.317875][ T6841] usb 2-1: New USB device found, idVendor=0424, idProduct=9e00, bcdDevice= 0.40 [ 878.326908][ T6856] usb 3-1: New USB device found, idVendor=0424, idProduct=9e00, bcdDevice= 0.40 [ 878.340511][ T6839] raw-gadget gadget: fail, usb_ep_enable returned -22 [ 878.345173][ T6840] raw-gadget gadget: fail, usb_ep_enable returned -22 [ 878.359149][ T6841] usb 2-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 878.365717][ T6849] usb 5-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 878.372523][ T2630] usb 6-1: bad CDC descriptors [ 878.379394][ T6840] raw-gadget gadget: fail, usb_ep_enable returned -22 [ 878.384225][ T6841] usb 2-1: Product: syz [ 878.390381][ T6856] usb 3-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 878.401404][ T6841] usb 2-1: Manufacturer: syz [ 878.402726][ T6849] usb 5-1: Product: syz [ 878.409214][ T6841] usb 2-1: SerialNumber: syz [ 878.411876][ T6838] raw-gadget gadget: fail, usb_ep_enable returned -22 [ 878.425932][ T6849] usb 5-1: Manufacturer: syz [ 878.426761][ T2630] smsc95xx v1.0.6 [ 878.430954][ T6856] usb 3-1: Product: syz [ 878.436495][ T6845] raw-gadget gadget: fail, usb_ep_enable returned -22 [ 878.439966][ T2511] usb 1-1: bad CDC descriptors [ 878.452683][ T6845] raw-gadget gadget: fail, usb_ep_enable returned -22 [ 878.456330][ T6838] raw-gadget gadget: fail, usb_ep_enable returned -22 [ 878.466344][ T6849] usb 5-1: SerialNumber: syz [ 878.481160][ T6841] usb 2-1: bad CDC descriptors [ 878.481554][ T6856] usb 3-1: Manufacturer: syz [ 878.491080][ T6856] usb 3-1: SerialNumber: syz [ 878.496746][ T6843] raw-gadget gadget: fail, usb_ep_enable returned -22 [ 878.503867][ T6843] raw-gadget gadget: fail, usb_ep_enable returned -22 [ 878.516676][ T6841] smsc95xx v1.0.6 [ 878.517227][ T6849] usb 5-1: bad CDC descriptors [ 878.525706][ T2511] smsc95xx v1.0.6 [ 878.534115][ T6846] raw-gadget gadget: fail, usb_ep_enable returned -22 [ 878.541766][ T6846] raw-gadget gadget: fail, usb_ep_enable returned -22 [ 878.556889][ T6849] smsc95xx v1.0.6 [ 878.567200][ T6856] usb 3-1: bad CDC descriptors [ 878.578958][ T6839] raw-gadget gadget: fail, usb_ep_enable returned -22 [ 878.585853][ T6839] raw-gadget gadget: fail, usb_ep_enable returned -22 [ 878.596690][ T6856] smsc95xx v1.0.6 [ 878.651471][ T6840] raw-gadget gadget: fail, usb_ep_enable returned -22 [ 878.659271][ T6840] raw-gadget gadget: fail, usb_ep_enable returned -22 [ 878.691377][ T6845] raw-gadget gadget: fail, usb_ep_enable returned -22 [ 878.698632][ T6845] raw-gadget gadget: fail, usb_ep_enable returned -22 [ 878.716749][ T6843] raw-gadget gadget: fail, usb_ep_enable returned -22 [ 878.723735][ T6843] raw-gadget gadget: fail, usb_ep_enable returned -22 [ 878.732002][ T2620] smsc95xx 4-1:1.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x00000030: -32 [ 878.743842][ T2620] smsc95xx 4-1:1.0 (unnamed net_device) (uninitialized): Error reading E2P_CMD [ 878.777521][ T6846] raw-gadget gadget: fail, usb_ep_enable returned -22 [ 878.784505][ T6846] raw-gadget gadget: fail, usb_ep_enable returned -22 [ 878.826401][ T2630] smsc95xx 6-1:1.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x00000030: -32 [ 878.837374][ T2630] smsc95xx 6-1:1.0 (unnamed net_device) (uninitialized): Error reading E2P_CMD [ 878.896411][ T2511] smsc95xx 1-1:1.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x00000030: -32 [ 878.907181][ T2511] smsc95xx 1-1:1.0 (unnamed net_device) (uninitialized): Error reading E2P_CMD [ 878.936363][ T6841] smsc95xx 2-1:1.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x00000030: -32 [ 878.957070][ T6841] smsc95xx 2-1:1.0 (unnamed net_device) (uninitialized): Error reading E2P_CMD [ 878.976411][ T6849] smsc95xx 5-1:1.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x00000030: -32 [ 878.987320][ T6849] smsc95xx 5-1:1.0 (unnamed net_device) (uninitialized): Error reading E2P_CMD [ 879.004087][ T2620] smsc95xx 4-1:1.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x00000014: -32 [ 879.016306][ T6856] smsc95xx 3-1:1.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x00000030: -32 [ 879.035099][ T6856] smsc95xx 3-1:1.0 (unnamed net_device) (uninitialized): Error reading E2P_CMD [ 879.096320][ T2630] smsc95xx 6-1:1.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x00000014: -32 [ 879.166407][ T2511] smsc95xx 1-1:1.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x00000014: -32 [ 879.226459][ T6841] smsc95xx 2-1:1.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x00000014: -32 [ 879.256328][ T6849] smsc95xx 5-1:1.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x00000014: -32 [ 879.267154][ T2620] smsc95xx 4-1:1.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x00000114: -32 [ 879.278129][ T2620] smsc95xx 4-1:1.0 (unnamed net_device) (uninitialized): Error reading MII_ACCESS [ 879.296302][ T2620] smsc95xx 4-1:1.0 (unnamed net_device) (uninitialized): MII is busy in smsc95xx_mdio_read [ 879.316428][ T6856] smsc95xx 3-1:1.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x00000014: -32 [ 879.356354][ T2630] smsc95xx 6-1:1.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x00000114: -32 [ 879.367943][ T2630] smsc95xx 6-1:1.0 (unnamed net_device) (uninitialized): Error reading MII_ACCESS [ 879.384441][ T2630] smsc95xx 6-1:1.0 (unnamed net_device) (uninitialized): MII is busy in smsc95xx_mdio_read [ 879.436349][ T2511] smsc95xx 1-1:1.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x00000114: -32 [ 879.447069][ T2511] smsc95xx 1-1:1.0 (unnamed net_device) (uninitialized): Error reading MII_ACCESS [ 879.456848][ T2511] smsc95xx 1-1:1.0 (unnamed net_device) (uninitialized): MII is busy in smsc95xx_mdio_read [ 879.496326][ T6841] smsc95xx 2-1:1.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x00000114: -32 [ 879.507341][ T6841] smsc95xx 2-1:1.0 (unnamed net_device) (uninitialized): Error reading MII_ACCESS [ 879.524125][ T6841] smsc95xx 2-1:1.0 (unnamed net_device) (uninitialized): MII is busy in smsc95xx_mdio_read [ 879.526371][ T6849] smsc95xx 5-1:1.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x00000114: -32 [ 879.544805][ T6849] smsc95xx 5-1:1.0 (unnamed net_device) (uninitialized): Error reading MII_ACCESS [ 879.554104][ T6849] smsc95xx 5-1:1.0 (unnamed net_device) (uninitialized): MII is busy in smsc95xx_mdio_read [ 879.586342][ T6856] smsc95xx 3-1:1.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x00000114: -32 [ 879.599271][ T2620] smsc95xx 4-1:1.0 eth1: register 'smsc95xx' at usb-dummy_hcd.3-1, smsc95xx USB 2.0 Ethernet, 6e:d7:9b:70:45:b4 [ 879.611173][ T6856] smsc95xx 3-1:1.0 (unnamed net_device) (uninitialized): Error reading MII_ACCESS [ 879.623582][ T6856] smsc95xx 3-1:1.0 (unnamed net_device) (uninitialized): MII is busy in smsc95xx_mdio_read [ 879.857596][ T2630] smsc95xx 6-1:1.0 eth2: register 'smsc95xx' at usb-dummy_hcd.5-1, smsc95xx USB 2.0 Ethernet, a6:b1:52:81:ee:8e [ 880.117665][ T2511] smsc95xx 1-1:1.0 eth3: register 'smsc95xx' at usb-dummy_hcd.0-1, smsc95xx USB 2.0 Ethernet, 8e:e9:34:77:97:18 [ 880.377674][ T6841] smsc95xx 2-1:1.0 eth4: register 'smsc95xx' at usb-dummy_hcd.1-1, smsc95xx USB 2.0 Ethernet, da:8a:f7:fb:d3:77 [ 880.637569][ T6849] smsc95xx 5-1:1.0 eth5: register 'smsc95xx' at usb-dummy_hcd.4-1, smsc95xx USB 2.0 Ethernet, c2:45:02:18:be:57 [ 880.907655][ T6856] smsc95xx 3-1:1.0 eth6: register 'smsc95xx' at usb-dummy_hcd.2-1, smsc95xx USB 2.0 Ethernet, de:00:1a:94:8e:1f executing program [ 881.370351][ T6841] usb 4-1: USB disconnect, device number 2 [ 881.386190][ T6856] smsc95xx 4-1:1.0 eth1: Failed to read reg index 0x00000114: -71 [ 881.404536][ T6841] smsc95xx 4-1:1.0 eth1: unregister 'smsc95xx' usb-dummy_hcd.3-1, smsc95xx USB 2.0 Ethernet [ 881.411270][ T6856] smsc95xx 4-1:1.0 eth1: Error reading MII_ACCESS executing program [ 881.452374][ T6856] smsc95xx 4-1:1.0 eth1: MII is busy in smsc95xx_mdio_read [ 881.500833][ T6856] smsc95xx 4-1:1.0 eth1 (unregistering): Failed to read MII_BMSR [ 881.506151][ T2630] smsc95xx 6-1:1.0 eth2: Failed to read reg index 0x00000114: -71 [ 881.534567][ T2630] smsc95xx 6-1:1.0 eth2: Error reading MII_ACCESS [ 881.541785][ T2630] smsc95xx 6-1:1.0 eth2: MII is busy in smsc95xx_mdio_read [ 881.549234][ T2630] smsc95xx 6-1:1.0 eth2: Failed to read MII_BMSR [ 881.558339][ T6856] usb 6-1: USB disconnect, device number 2 [ 881.591092][ T6856] smsc95xx 6-1:1.0 eth2: unregister 'smsc95xx' usb-dummy_hcd.5-1, smsc95xx USB 2.0 Ethernet [ 881.617296][ T6860] usb 2-1: USB disconnect, device number 2 [ 881.626273][ T2630] smsc95xx 2-1:1.0 eth4: Failed to read reg index 0x00000114: -71 [ 881.656274][ T2620] smsc95xx 1-1:1.0 eth3: Failed to read reg index 0x00000114: -71 executing program executing program executing program [ 881.664245][ T6849] smsc95xx 5-1:1.0 eth5: Failed to read reg index 0x00000114: -71 [ 881.666188][ T6860] smsc95xx 2-1:1.0 eth4: unregister 'smsc95xx' usb-dummy_hcd.1-1, smsc95xx USB 2.0 Ethernet [ 881.683743][ T2620] smsc95xx 1-1:1.0 eth3: Error reading MII_ACCESS [ 881.694175][ T6849] smsc95xx 5-1:1.0 eth5: Error reading MII_ACCESS [ 881.699993][ T2630] smsc95xx 2-1:1.0 eth4: Error reading MII_ACCESS [ 881.737608][ T2630] smsc95xx 2-1:1.0 eth4: MII is busy in smsc95xx_mdio_read [ 881.739814][ T2620] smsc95xx 1-1:1.0 eth3: MII is busy in smsc95xx_mdio_read [ 881.758104][ T6849] smsc95xx 5-1:1.0 eth5: MII is busy in smsc95xx_mdio_read [ 881.776466][ T2630] smsc95xx 2-1:1.0 eth4: Failed to read MII_BMSR [ 881.783511][ T6849] smsc95xx 5-1:1.0 eth5: Failed to read MII_BMSR [ 881.800554][ T2630] usb 5-1: USB disconnect, device number 2 [ 881.814469][ T2630] smsc95xx 5-1:1.0 eth5: unregister 'smsc95xx' usb-dummy_hcd.4-1, smsc95xx USB 2.0 Ethernet [ 881.823227][ T2620] smsc95xx 1-1:1.0 eth3: Failed to read MII_BMSR [ 881.829753][ T6949] usb 1-1: USB disconnect, device number 2 [ 881.839526][ T6949] smsc95xx 1-1:1.0 eth3: unregister 'smsc95xx' usb-dummy_hcd.0-1, smsc95xx USB 2.0 Ethernet executing program [ 881.906448][ T2620] smsc95xx 3-1:1.0 eth6: Failed to read reg index 0x00000114: -71 [ 881.912364][ T5] usb 3-1: USB disconnect, device number 2 [ 881.921745][ T2620] smsc95xx 3-1:1.0 eth6: Error reading MII_ACCESS [ 881.924611][ T5] smsc95xx 3-1:1.0 eth6: unregister 'smsc95xx' usb-dummy_hcd.2-1, smsc95xx USB 2.0 Ethernet [ 881.938463][ T2620] smsc95xx 3-1:1.0 eth6: MII is busy in smsc95xx_mdio_read [ 881.950875][ T2620] smsc95xx 3-1:1.0 eth6: Failed to read MII_BMSR [ 882.056193][ T6841] usb 4-1: new high-speed USB device number 3 using dummy_hcd [ 882.116099][ T6856] usb 6-1: new high-speed USB device number 3 using dummy_hcd [ 882.336055][ T6841] usb 4-1: Using ep0 maxpacket: 8 [ 882.356131][ T6856] usb 6-1: Using ep0 maxpacket: 8 [ 882.396258][ T6860] usb 2-1: new high-speed USB device number 3 using dummy_hcd [ 882.456284][ T6841] usb 4-1: config 1 interface 0 altsetting 0 bulk endpoint 0x82 has invalid maxpacket 247 [ 882.466375][ T6841] usb 4-1: config 1 interface 0 altsetting 0 bulk endpoint 0x3 has invalid maxpacket 564 [ 882.476335][ T6856] usb 6-1: config 1 interface 0 altsetting 0 bulk endpoint 0x82 has invalid maxpacket 247 [ 882.476961][ T6841] usb 4-1: config 1 interface 0 altsetting 0 has 2 endpoint descriptors, different from the interface descriptor's value: 3 [ 882.489154][ T6856] usb 6-1: config 1 interface 0 altsetting 0 bulk endpoint 0x3 has invalid maxpacket 564 [ 882.510376][ T6856] usb 6-1: config 1 interface 0 altsetting 0 has 2 endpoint descriptors, different from the interface descriptor's value: 3 [ 882.516037][ T2630] usb 5-1: new high-speed USB device number 3 using dummy_hcd [ 882.531206][ T6949] usb 1-1: new high-speed USB device number 3 using dummy_hcd [ 882.539139][ T5] usb 3-1: new high-speed USB device number 3 using dummy_hcd [ 882.676100][ T6860] usb 2-1: Using ep0 maxpacket: 8 [ 882.676304][ T6856] usb 6-1: New USB device found, idVendor=0424, idProduct=9e00, bcdDevice= 0.40 [ 882.681556][ T6841] usb 4-1: New USB device found, idVendor=0424, idProduct=9e00, bcdDevice= 0.40 [ 882.690827][ T6856] usb 6-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 882.702547][ T6841] usb 4-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 882.708098][ T6856] usb 6-1: Product: syz [ 882.717764][ T6841] usb 4-1: Product: syz [ 882.720918][ T6856] usb 6-1: Manufacturer: syz [ 882.724847][ T6841] usb 4-1: Manufacturer: syz [ 882.731397][ T6856] usb 6-1: SerialNumber: syz [ 882.734472][ T6841] usb 4-1: SerialNumber: syz [ 882.756384][ T6942] raw-gadget gadget: fail, usb_ep_enable returned -22 [ 882.765666][ T6942] raw-gadget gadget: fail, usb_ep_enable returned -22 [ 882.772907][ T6936] raw-gadget gadget: fail, usb_ep_enable returned -22 [ 882.780970][ T6936] raw-gadget gadget: fail, usb_ep_enable returned -22 [ 882.797194][ T6856] usb 6-1: bad CDC descriptors [ 882.797199][ T6841] usb 4-1: bad CDC descriptors [ 882.826463][ T6860] usb 2-1: config 1 interface 0 altsetting 0 bulk endpoint 0x82 has invalid maxpacket 247 [ 882.836469][ T2630] usb 5-1: Using ep0 maxpacket: 8 [ 882.841596][ T6949] usb 1-1: Using ep0 maxpacket: 8 [ 882.846741][ T5] usb 3-1: Using ep0 maxpacket: 8 [ 882.852339][ T6841] smsc95xx v1.0.6 [ 882.856313][ T6860] usb 2-1: config 1 interface 0 altsetting 0 bulk endpoint 0x3 has invalid maxpacket 564 [ 882.866246][ T6860] usb 2-1: config 1 interface 0 altsetting 0 has 2 endpoint descriptors, different from the interface descriptor's value: 3 [ 882.868519][ T6856] smsc95xx v1.0.6 [ 882.976401][ T5] usb 3-1: config 1 interface 0 altsetting 0 bulk endpoint 0x82 has invalid maxpacket 247 [ 882.986418][ T2630] usb 5-1: config 1 interface 0 altsetting 0 bulk endpoint 0x82 has invalid maxpacket 247 [ 882.997828][ T6949] usb 1-1: config 1 interface 0 altsetting 0 bulk endpoint 0x82 has invalid maxpacket 247 [ 883.008178][ T6936] raw-gadget gadget: fail, usb_ep_enable returned -22 [ 883.008210][ T6942] raw-gadget gadget: fail, usb_ep_enable returned -22 [ 883.014999][ T6936] raw-gadget gadget: fail, usb_ep_enable returned -22 [ 883.025285][ T6942] raw-gadget gadget: fail, usb_ep_enable returned -22 [ 883.029215][ T5] usb 3-1: config 1 interface 0 altsetting 0 bulk endpoint 0x3 has invalid maxpacket 564 [ 883.046069][ T2630] usb 5-1: config 1 interface 0 altsetting 0 bulk endpoint 0x3 has invalid maxpacket 564 [ 883.055868][ T2630] usb 5-1: config 1 interface 0 altsetting 0 has 2 endpoint descriptors, different from the interface descriptor's value: 3 [ 883.068941][ T6860] usb 2-1: New USB device found, idVendor=0424, idProduct=9e00, bcdDevice= 0.40 [ 883.078072][ T6949] usb 1-1: config 1 interface 0 altsetting 0 bulk endpoint 0x3 has invalid maxpacket 564 [ 883.087984][ T6860] usb 2-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 883.096067][ T6949] usb 1-1: config 1 interface 0 altsetting 0 has 2 endpoint descriptors, different from the interface descriptor's value: 3 [ 883.109031][ T6860] usb 2-1: Product: syz [ 883.113192][ T6860] usb 2-1: Manufacturer: syz [ 883.117954][ T5] usb 3-1: config 1 interface 0 altsetting 0 has 2 endpoint descriptors, different from the interface descriptor's value: 3 [ 883.130976][ T6860] usb 2-1: SerialNumber: syz [ 883.167071][ T6950] raw-gadget gadget: fail, usb_ep_enable returned -22 [ 883.173987][ T6950] raw-gadget gadget: fail, usb_ep_enable returned -22 [ 883.187272][ T6860] usb 2-1: bad CDC descriptors [ 883.236290][ T6860] smsc95xx v1.0.6 [ 883.246920][ T6841] smsc95xx 4-1:1.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x00000030: -32 [ 883.257700][ T6841] smsc95xx 4-1:1.0 (unnamed net_device) (uninitialized): Error reading E2P_CMD [ 883.276167][ T6856] smsc95xx 6-1:1.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x00000030: -32 [ 883.287088][ T6856] smsc95xx 6-1:1.0 (unnamed net_device) (uninitialized): Error reading E2P_CMD [ 883.296432][ T2630] usb 5-1: New USB device found, idVendor=0424, idProduct=9e00, bcdDevice= 0.40 [ 883.305477][ T2630] usb 5-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 883.313799][ T5] usb 3-1: New USB device found, idVendor=0424, idProduct=9e00, bcdDevice= 0.40 [ 883.323199][ T6949] usb 1-1: New USB device found, idVendor=0424, idProduct=9e00, bcdDevice= 0.40 [ 883.332359][ T2630] usb 5-1: Product: syz [ 883.336618][ T5] usb 3-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 883.344590][ T5] usb 3-1: Product: syz [ 883.348970][ T6949] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 883.357258][ T2630] usb 5-1: Manufacturer: syz [ 883.361849][ T2630] usb 5-1: SerialNumber: syz [ 883.366538][ T6949] usb 1-1: Product: syz [ 883.370700][ T6949] usb 1-1: Manufacturer: syz [ 883.375270][ T6949] usb 1-1: SerialNumber: syz [ 883.380687][ T5] usb 3-1: Manufacturer: syz [ 883.385305][ T5] usb 3-1: SerialNumber: syz [ 883.386987][ T6950] raw-gadget gadget: fail, usb_ep_enable returned -22 [ 883.398399][ T6950] raw-gadget gadget: fail, usb_ep_enable returned -22 [ 883.406268][ T6955] raw-gadget gadget: fail, usb_ep_enable returned -22 [ 883.415801][ T6955] raw-gadget gadget: fail, usb_ep_enable returned -22 [ 883.426270][ T6958] raw-gadget gadget: fail, usb_ep_enable returned -22 [ 883.433405][ T6972] raw-gadget gadget: fail, usb_ep_enable returned -22 [ 883.441816][ T6958] raw-gadget gadget: fail, usb_ep_enable returned -22 [ 883.444521][ T6972] raw-gadget gadget: fail, usb_ep_enable returned -22 [ 883.456714][ T2630] usb 5-1: bad CDC descriptors [ 883.462442][ T6949] usb 1-1: bad CDC descriptors [ 883.468944][ T5] usb 3-1: bad CDC descriptors [ 883.486377][ T2630] smsc95xx v1.0.6 [ 883.490574][ T6949] smsc95xx v1.0.6 [ 883.495050][ T5] smsc95xx v1.0.6 [ 883.536246][ T6841] smsc95xx 4-1:1.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x00000014: -32 [ 883.546156][ T6856] smsc95xx 6-1:1.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x00000014: -32 [ 883.656203][ T6958] raw-gadget gadget: fail, usb_ep_enable returned -22 [ 883.656209][ T6955] raw-gadget gadget: fail, usb_ep_enable returned -22 [ 883.656271][ T6955] raw-gadget gadget: fail, usb_ep_enable returned -22 [ 883.663199][ T6860] smsc95xx 2-1:1.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x00000030: -32 [ 883.670216][ T6958] raw-gadget gadget: fail, usb_ep_enable returned -22 [ 883.684386][ T6860] smsc95xx 2-1:1.0 (unnamed net_device) (uninitialized): Error reading E2P_CMD [ 883.687769][ T6972] raw-gadget gadget: fail, usb_ep_enable returned -22 [ 883.711399][ T6972] raw-gadget gadget: fail, usb_ep_enable returned -22 [ 883.796109][ T6841] smsc95xx 4-1:1.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x00000114: -32 [ 883.806069][ T6856] smsc95xx 6-1:1.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x00000114: -32 [ 883.806891][ T6841] smsc95xx 4-1:1.0 (unnamed net_device) (uninitialized): Error reading MII_ACCESS [ 883.824346][ T6856] smsc95xx 6-1:1.0 (unnamed net_device) (uninitialized): Error reading MII_ACCESS [ 883.827660][ T6841] smsc95xx 4-1:1.0 (unnamed net_device) (uninitialized): MII is busy in smsc95xx_mdio_read [ 883.850367][ T6856] smsc95xx 6-1:1.0 (unnamed net_device) (uninitialized): MII is busy in smsc95xx_mdio_read [ 883.916256][ T2630] smsc95xx 5-1:1.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x00000030: -32 [ 883.927240][ T2630] smsc95xx 5-1:1.0 (unnamed net_device) (uninitialized): Error reading E2P_CMD [ 883.943748][ T5] smsc95xx 3-1:1.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x00000030: -32 [ 883.954541][ T6949] smsc95xx 1-1:1.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x00000030: -32 [ 883.965441][ T6860] smsc95xx 2-1:1.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x00000014: -32 [ 883.976269][ T6949] smsc95xx 1-1:1.0 (unnamed net_device) (uninitialized): Error reading E2P_CMD [ 883.985316][ T5] smsc95xx 3-1:1.0 (unnamed net_device) (uninitialized): Error reading E2P_CMD [ 884.107447][ T6841] smsc95xx 4-1:1.0 eth1: register 'smsc95xx' at usb-dummy_hcd.3-1, smsc95xx USB 2.0 Ethernet, 52:a5:dc:1c:80:9a [ 884.226082][ T6949] smsc95xx 1-1:1.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x00000014: -32 [ 884.236882][ T2630] smsc95xx 5-1:1.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x00000014: -32 [ 884.247573][ T6860] smsc95xx 2-1:1.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x00000114: -32 [ 884.258252][ T5] smsc95xx 3-1:1.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x00000014: -32 [ 884.268895][ T6860] smsc95xx 2-1:1.0 (unnamed net_device) (uninitialized): Error reading MII_ACCESS [ 884.278583][ T6860] smsc95xx 2-1:1.0 (unnamed net_device) (uninitialized): MII is busy in smsc95xx_mdio_read [ 884.367541][ T6856] smsc95xx 6-1:1.0 eth2: register 'smsc95xx' at usb-dummy_hcd.5-1, smsc95xx USB 2.0 Ethernet, f6:4a:90:3e:5a:c2 [ 884.537008][ T6949] smsc95xx 1-1:1.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x00000114: -32 [ 884.549202][ T2630] smsc95xx 5-1:1.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x00000114: -32 [ 884.559957][ T5] smsc95xx 3-1:1.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x00000114: -32 [ 884.570952][ T2630] smsc95xx 5-1:1.0 (unnamed net_device) (uninitialized): Error reading MII_ACCESS [ 884.580309][ T5] smsc95xx 3-1:1.0 (unnamed net_device) (uninitialized): Error reading MII_ACCESS [ 884.589594][ T6949] smsc95xx 1-1:1.0 (unnamed net_device) (uninitialized): Error reading MII_ACCESS [ 884.598936][ T5] smsc95xx 3-1:1.0 (unnamed net_device) (uninitialized): MII is busy in smsc95xx_mdio_read [ 884.608995][ T2630] smsc95xx 5-1:1.0 (unnamed net_device) (uninitialized): MII is busy in smsc95xx_mdio_read [ 884.619311][ T6949] smsc95xx 1-1:1.0 (unnamed net_device) (uninitialized): MII is busy in smsc95xx_mdio_read [ 884.647426][ T6860] smsc95xx 2-1:1.0 eth3: register 'smsc95xx' at usb-dummy_hcd.1-1, smsc95xx USB 2.0 Ethernet, 2e:c3:28:08:53:b6 [ 884.927674][ T5] smsc95xx 3-1:1.0 eth4: register 'smsc95xx' at usb-dummy_hcd.2-1, smsc95xx USB 2.0 Ethernet, 9a:1d:b6:36:89:ee [ 885.197452][ T2630] smsc95xx 5-1:1.0 eth5: register 'smsc95xx' at usb-dummy_hcd.4-1, smsc95xx USB 2.0 Ethernet, ce:f6:a3:f0:1a:d2 [ 885.467446][ T6949] smsc95xx 1-1:1.0 eth6: register 'smsc95xx' at usb-dummy_hcd.0-1, smsc95xx USB 2.0 Ethernet, e2:d9:8d:11:29:eb executing program [ 885.928247][ T2620] usb 6-1: USB disconnect, device number 3 [ 885.936501][ T2620] smsc95xx 6-1:1.0 eth2: unregister 'smsc95xx' usb-dummy_hcd.5-1, smsc95xx USB 2.0 Ethernet [ 885.946071][ T2630] usb 4-1: USB disconnect, device number 3 [ 885.946941][ T6856] smsc95xx 6-1:1.0 eth2: Failed to read reg index 0x00000114: -71 [ 885.959220][ T2630] smsc95xx 4-1:1.0 eth1: unregister 'smsc95xx' usb-dummy_hcd.3-1, smsc95xx USB 2.0 Ethernet [ 885.970705][ T6856] smsc95xx 6-1:1.0 eth2: Error reading MII_ACCESS executing program [ 885.970787][ T6949] smsc95xx 4-1:1.0 eth1: Failed to read reg index 0x00000114: -71 [ 885.984900][ T6856] smsc95xx 6-1:1.0 eth2: MII is busy in smsc95xx_mdio_read [ 885.987602][ T6949] smsc95xx 4-1:1.0 eth1: Error reading MII_ACCESS [ 885.995199][ T6856] smsc95xx 6-1:1.0 eth2: Failed to read MII_BMSR [ 886.035034][ T6949] smsc95xx 4-1:1.0 eth1: MII is busy in smsc95xx_mdio_read [ 886.043458][ T6949] smsc95xx 4-1:1.0 eth1: Failed to read MII_BMSR executing program [ 886.327841][ T5] usb 2-1: USB disconnect, device number 3 [ 886.334581][ T5] smsc95xx 2-1:1.0 eth3: unregister 'smsc95xx' usb-dummy_hcd.1-1, smsc95xx USB 2.0 Ethernet [ 886.350947][ T6949] smsc95xx 2-1:1.0 eth3: Failed to read reg index 0x00000114: -71 [ 886.359385][ T6949] smsc95xx 2-1:1.0 eth3: Error reading MII_ACCESS [ 886.368137][ T6949] smsc95xx 2-1:1.0 eth3: MII is busy in smsc95xx_mdio_read [ 886.375390][ T6949] smsc95xx 2-1:1.0 eth3: Failed to read MII_BMSR [ 886.455842][ T2620] usb 6-1: new high-speed USB device number 4 using dummy_hcd [ 886.505827][ T2630] usb 4-1: new high-speed USB device number 4 using dummy_hcd executing program [ 886.644680][ T6856] usb 5-1: USB disconnect, device number 3 [ 886.651685][ T6856] smsc95xx 5-1:1.0 eth5: unregister 'smsc95xx' usb-dummy_hcd.4-1, smsc95xx USB 2.0 Ethernet [ 886.680516][ T6849] usb 1-1: USB disconnect, device number 3 executing program [ 886.688120][ T6849] smsc95xx 1-1:1.0 eth6: unregister 'smsc95xx' usb-dummy_hcd.0-1, smsc95xx USB 2.0 Ethernet [ 886.705802][ T2620] usb 6-1: Using ep0 maxpacket: 8 [ 886.705973][ T6949] smsc95xx 1-1:1.0 eth6: Failed to read reg index 0x00000114: -19 [ 886.743170][ T6949] smsc95xx 1-1:1.0 eth6 (unregistering): Error reading MII_ACCESS [ 886.755790][ T2630] usb 4-1: Using ep0 maxpacket: 8 [ 886.778727][ T6949] smsc95xx 1-1:1.0 eth6 (unregistered): MII is busy in smsc95xx_mdio_read [ 886.799926][ T6949] ================================================================== [ 886.808337][ T6949] BUG: KASAN: use-after-free in __mutex_unlock_slowpath+0x8e/0x660 [ 886.816228][ T6949] Read of size 8 at addr ffff888094310c38 by task kworker/0:4/6949 [ 886.826630][ T6949] [ 886.828968][ T6949] CPU: 0 PID: 6949 Comm: kworker/0:4 Not tainted 5.7.0-syzkaller #0 [ 886.829688][ T2620] usb 6-1: config 1 interface 0 altsetting 0 bulk endpoint 0x82 has invalid maxpacket 247 [ 886.836927][ T6949] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 886.837082][ T6949] Workqueue: events check_carrier [ 886.862105][ T6949] Call Trace: [ 886.865465][ T6949] dump_stack+0x188/0x20d [ 886.869814][ T6949] ? __mutex_unlock_slowpath+0x8e/0x660 [ 886.875350][ T6949] ? __mutex_unlock_slowpath+0x8e/0x660 [ 886.880963][ T6949] print_address_description.constprop.0.cold+0xd3/0x413 [ 886.887982][ T6949] ? __smsc95xx_mdio_read+0x1bc/0x210 [ 886.893398][ T6949] ? vprintk_func+0x97/0x1a6 [ 886.897972][ T6949] ? __mutex_unlock_slowpath+0x8e/0x660 [ 886.903494][ T6949] kasan_report.cold+0x1f/0x37 [ 886.908242][ T6949] ? __mutex_unlock_slowpath+0x8e/0x660 [ 886.913786][ T6949] check_memory_region+0x141/0x190 [ 886.918988][ T6949] __mutex_unlock_slowpath+0x8e/0x660 [ 886.924344][ T6949] ? wait_for_completion+0x270/0x270 [ 886.929635][ T6949] __smsc95xx_mdio_read+0x1bc/0x210 [ 886.935335][ T6949] ? smsc95xx_ethtool_getregs+0xa0/0xa0 [ 886.940919][ T6949] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 886.946448][ T6949] check_carrier+0xf3/0x1d0 [ 886.950995][ T6949] process_one_work+0x965/0x16a0 [ 886.955939][ T6949] ? lock_release+0x800/0x800 [ 886.960596][ T6949] ? pwq_dec_nr_in_flight+0x310/0x310 [ 886.965968][ T6949] ? rwlock_bug.part.0+0x90/0x90 [ 886.970901][ T6949] worker_thread+0x96/0xe20 [ 886.975391][ T6949] ? process_one_work+0x16a0/0x16a0 [ 886.980625][ T6949] kthread+0x388/0x470 [ 886.984694][ T6949] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 886.991011][ T6949] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 886.996760][ T6949] ret_from_fork+0x24/0x30 [ 887.001164][ T6949] [ 887.003521][ T6949] Allocated by task 6949: [ 887.007840][ T6949] save_stack+0x1b/0x40 [ 887.011996][ T6949] __kasan_kmalloc.constprop.0+0xbf/0xd0 [ 887.017709][ T6949] kvmalloc_node+0xb4/0xf0 [ 887.022153][ T6949] alloc_netdev_mqs+0x97/0xdc0 [ 887.026897][ T6949] usbnet_probe+0x159/0x2600 [ 887.031535][ T6949] usb_probe_interface+0x305/0x7a0 [ 887.036712][ T6949] really_probe+0x281/0x6d0 [ 887.041196][ T6949] driver_probe_device+0x104/0x210 [ 887.046284][ T6949] __device_attach_driver+0x1c2/0x220 [ 887.051631][ T6949] bus_for_each_drv+0x162/0x1e0 [ 887.056467][ T6949] __device_attach+0x21a/0x360 [ 887.061208][ T6949] bus_probe_device+0x1e4/0x290 [ 887.066033][ T6949] device_add+0x132d/0x1c10 [ 887.070517][ T6949] usb_set_configuration+0xec5/0x1740 [ 887.075909][ T6949] usb_generic_driver_probe+0x9d/0xe0 [ 887.081268][ T6949] usb_probe_device+0xc6/0x1f0 [ 887.086016][ T6949] really_probe+0x281/0x6d0 [ 887.090521][ T6949] driver_probe_device+0x104/0x210 [ 887.095613][ T6949] __device_attach_driver+0x1c2/0x220 [ 887.100969][ T6949] bus_for_each_drv+0x162/0x1e0 [ 887.105809][ T6949] __device_attach+0x21a/0x360 [ 887.110558][ T6949] bus_probe_device+0x1e4/0x290 [ 887.115401][ T6949] device_add+0x132d/0x1c10 [ 887.119894][ T6949] usb_new_device.cold+0x753/0x103d [ 887.125067][ T6949] hub_event+0x1eca/0x38f0 [ 887.129577][ T6949] process_one_work+0x965/0x16a0 [ 887.134527][ T6949] worker_thread+0x96/0xe20 [ 887.139016][ T6949] kthread+0x388/0x470 [ 887.143068][ T6949] ret_from_fork+0x24/0x30 [ 887.147461][ T6949] [ 887.149769][ T6949] Freed by task 6849: [ 887.153731][ T6949] save_stack+0x1b/0x40 [ 887.157866][ T6949] __kasan_slab_free+0xf7/0x140 [ 887.162879][ T6949] kfree+0x109/0x2b0 [ 887.166838][ T6949] kvfree+0x42/0x50 [ 887.170695][ T6949] device_release+0x71/0x200 [ 887.175306][ T6949] kobject_put+0x1e7/0x2e0 [ 887.179701][ T6949] put_device+0x1b/0x30 [ 887.183836][ T6949] free_netdev+0x380/0x4a0 [ 887.188233][ T6949] usbnet_disconnect+0x1fb/0x270 [ 887.193584][ T6949] usb_unbind_interface+0x1bd/0x8a0 [ 887.198768][ T6949] device_release_driver_internal+0x432/0x500 [ 887.204809][ T6949] bus_remove_device+0x2dc/0x4a0 [ 887.209720][ T6949] device_del+0x481/0xd30 [ 887.214025][ T6949] usb_disable_device+0x211/0x690 [ 887.219023][ T6949] usb_disconnect+0x284/0x8d0 [ 887.223674][ T6949] hub_event+0x17ca/0x38f0 [ 887.228069][ T6949] process_one_work+0x965/0x16a0 [ 887.232985][ T6949] worker_thread+0x96/0xe20 [ 887.237463][ T6949] kthread+0x388/0x470 [ 887.241509][ T6949] ret_from_fork+0x24/0x30 [ 887.245904][ T6949] [ 887.248211][ T6949] The buggy address belongs to the object at ffff888094310000 [ 887.248211][ T6949] which belongs to the cache kmalloc-8k of size 8192 [ 887.262325][ T6949] The buggy address is located 3128 bytes inside of [ 887.262325][ T6949] 8192-byte region [ffff888094310000, ffff888094312000) [ 887.275750][ T6949] The buggy address belongs to the page: [ 887.281368][ T6949] page:ffffea000250c400 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 head:ffffea000250c400 order:2 compound_mapcount:0 compound_pincount:0 [ 887.296526][ T6949] flags: 0xfffe0000010200(slab|head) [ 887.301803][ T6949] raw: 00fffe0000010200 ffffea0002257808 ffffea0002548608 ffff8880aa0021c0 [ 887.312972][ T6949] raw: 0000000000000000 ffff888094310000 0000000100000001 0000000000000000 [ 887.321530][ T6949] page dumped because: kasan: bad access detected [ 887.327912][ T6949] [ 887.330215][ T6949] Memory state around the buggy address: [ 887.335913][ T6949] ffff888094310b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 887.343960][ T6949] ffff888094310b80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 887.352005][ T6949] >ffff888094310c00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 887.360039][ T6949] ^ [ 887.365918][ T6949] ffff888094310c80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 887.374493][ T6949] ffff888094310d00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 887.382541][ T6949] ================================================================== [ 887.390574][ T6949] Disabling lock debugging due to kernel taint executing program [ 887.397029][ T2620] usb 6-1: config 1 interface 0 altsetting 0 bulk endpoint 0x3 has invalid maxpacket 564 [ 887.406929][ T5] usb 2-1: new high-speed USB device number 4 using dummy_hcd [ 887.407709][ T2620] usb 6-1: config 1 interface 0 altsetting 0 has 2 endpoint descriptors, different from the interface descriptor's value: 3 [ 887.450055][ T2511] usb 3-1: USB disconnect, device number 3 [ 887.456406][ T6949] Kernel panic - not syncing: panic_on_warn set ... [ 887.456999][ T2511] smsc95xx 3-1:1.0 eth4: unregister 'smsc95xx' usb-dummy_hcd.2-1, smsc95xx USB 2.0 Ethernet [ 887.462993][ T6949] CPU: 0 PID: 6949 Comm: kworker/0:4 Tainted: G B 5.7.0-syzkaller #0 [ 887.462999][ T6949] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 887.463018][ T6949] Workqueue: events check_carrier [ 887.497410][ T6949] Call Trace: [ 887.500726][ T6949] dump_stack+0x188/0x20d [ 887.505059][ T6949] ? __mutex_unlock_slowpath+0x10/0x660 [ 887.510669][ T6949] panic+0x2e3/0x75c [ 887.514543][ T6949] ? add_taint.cold+0x16/0x16 [ 887.519223][ T6949] ? preempt_schedule_common+0x5e/0xc0 [ 887.524686][ T6949] ? __mutex_unlock_slowpath+0x8e/0x660 [ 887.530229][ T6949] ? __mutex_unlock_slowpath+0x8e/0x660 [ 887.535791][ T6949] ? preempt_schedule_thunk+0x16/0x18 [ 887.541190][ T6949] ? trace_hardirqs_on+0x55/0x230 [ 887.546197][ T6949] ? __mutex_unlock_slowpath+0x8e/0x660 [ 887.551720][ T6949] ? __mutex_unlock_slowpath+0x8e/0x660 [ 887.557249][ T6949] end_report+0x4d/0x53 [ 887.562260][ T6949] kasan_report.cold+0xd/0x37 [ 887.566912][ T6949] ? __mutex_unlock_slowpath+0x8e/0x660 [ 887.572450][ T6949] check_memory_region+0x141/0x190 [ 887.577539][ T6949] __mutex_unlock_slowpath+0x8e/0x660 [ 887.582887][ T6949] ? wait_for_completion+0x270/0x270 [ 887.588162][ T6949] __smsc95xx_mdio_read+0x1bc/0x210 [ 887.593348][ T6949] ? smsc95xx_ethtool_getregs+0xa0/0xa0 [ 887.598885][ T6949] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 887.604415][ T6949] check_carrier+0xf3/0x1d0 [ 887.605789][ T2620] usb 6-1: New USB device found, idVendor=0424, idProduct=9e00, bcdDevice= 0.40 [ 887.608898][ T6949] process_one_work+0x965/0x16a0 [ 887.608916][ T6949] ? lock_release+0x800/0x800 [ 887.618915][ T2620] usb 6-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 887.623681][ T6949] ? pwq_dec_nr_in_flight+0x310/0x310 [ 887.623697][ T6949] ? rwlock_bug.part.0+0x90/0x90 [ 887.634675][ T2620] usb 6-1: Product: syz [ 887.636299][ T6949] worker_thread+0x96/0xe20 [ 887.636316][ T6949] ? process_one_work+0x16a0/0x16a0 [ 887.636328][ T6949] kthread+0x388/0x470 [ 887.636339][ T6949] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 887.636355][ T6949] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 887.644462][ T2620] usb 6-1: Manufacturer: syz [ 887.646626][ T6949] ret_from_fork+0x24/0x30 [ 887.648205][ T6949] Kernel Offset: disabled [ 887.690605][ T6949] Rebooting in 86400 seconds..