ci2 starts bisection 2026-07-31 12:52:54.893765788 +0000 UTC m=+507.415289828 bisecting cause commit starting from 11028ab62899e4191e074ee364c712b77823a9c4 building syzkaller on 2377cd3dcd3c2e96dc5bd3c92c152122cdd05d7a ensuring issue is reproducible on original commit 11028ab62899e4191e074ee364c712b77823a9c4 testing commit 11028ab62899e4191e074ee364c712b77823a9c4 gcc compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 kernel signature: 99cd9ce714e5f6e61d816c0986772758fede364ea9280b6edbdec3bfb2b5e141 all runs: crashed: WARNING in usb_ep_enable representative crash: WARNING in usb_ep_enable, types: [WARNING] check whether we can drop unnecessary instrumentation disabling configs for [ubsan kasan locking atomic_sleep hang memleak], they are not needed testing commit 11028ab62899e4191e074ee364c712b77823a9c4 gcc compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 kernel signature: 90582a8daf327b9c0cc4e1ad7168090100a3dac225bbf0dec5795da010cdc408 all runs: crashed: WARNING in usb_ep_enable representative crash: WARNING in usb_ep_enable, types: [WARNING] the bug reproduces without the instrumentation disabling configs for [kasan locking atomic_sleep hang memleak ubsan], they are not needed kconfig minimization: base=4140 full=8397 leaves diff=2111 split chunks (needed=false): <2111> split chunk #0 of len 2111 into 5 parts testing without sub-chunk 1/5 disabling configs for [hang memleak ubsan kasan locking atomic_sleep], they are not needed testing commit 11028ab62899e4191e074ee364c712b77823a9c4 gcc compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 kernel signature: efc9597453b196e45d920925e81b906f37c149ad909a14dbab9fbbdd8e8e2df0 all runs: crashed: WARNING in usb_ep_enable representative crash: WARNING in usb_ep_enable, types: [WARNING] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [hang memleak ubsan kasan locking atomic_sleep], they are not needed testing commit 11028ab62899e4191e074ee364c712b77823a9c4 gcc compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 kernel signature: 590db041ccd974e273187613d931707f13af63e9e3e6c23f1caf19f74c7de0ae all runs: crashed: WARNING in usb_ep_enable representative crash: WARNING in usb_ep_enable, types: [WARNING] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [kasan locking atomic_sleep hang memleak ubsan], they are not needed testing commit 11028ab62899e4191e074ee364c712b77823a9c4 gcc compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 kernel signature: 510d2930237c20f36c65f07a567bf902a3814c15cf30d4941a2d3a78561b26a8 all runs: crashed: WARNING in usb_ep_enable representative crash: WARNING in usb_ep_enable, types: [WARNING] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [hang memleak ubsan kasan locking atomic_sleep], they are not needed testing commit 11028ab62899e4191e074ee364c712b77823a9c4 gcc compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 kernel signature: 8c3c1d095247ae1c0b4a94031ba5bf0b722d37154c389a4fc120d9a9791763db all runs: crashed: WARNING in usb_ep_enable representative crash: WARNING in usb_ep_enable, types: [WARNING] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [hang memleak ubsan kasan locking atomic_sleep], they are not needed testing commit 11028ab62899e4191e074ee364c712b77823a9c4 gcc compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 kernel signature: a531b0c3ef118694a9e0ccf9f11c1a352e5ae8bcddd5f3a4a8282f6a2c40d9f5 all runs: OK false negative chance: 0.000 minimized to 419 configs; suspects: [ATM BCMA BLK_DEV_ZONED BPF_SYSCALL CARDBUS CFG80211 CFG80211_WEXT COMMON_CLK CONTIG_ALLOC DVB_CORE EXTCON GPIOLIB HID_ZEROPLUS I2C_MUX IIO IOMMUFD KVM KVM_INTEL LIBNVDIMM MEDIA_ANALOG_TV_SUPPORT MEDIA_CAMERA_SUPPORT MEDIA_CEC_SUPPORT MEDIA_CONTROLLER MEDIA_DIGITAL_TV_SUPPORT MEDIA_RADIO_SUPPORT MEDIA_SDR_SUPPORT MEDIA_SUPPORT MEDIA_TEST_SUPPORT MEDIA_USB_SUPPORT MEMORY_HOTPLUG MEMORY_HOTREMOVE MFD_VIPERBOARD NOP_USB_XCEIV PARPORT PCCARD PCMCIA PHONET RADIO_ADAPTERS RADIO_SI470X RADIO_SI4713 RC_CORE RFKILL SND SOUND SPI SSB TAP TARGET_CORE TUN USB_AMD5536UDC USB_ATM USB_CDNS3 USB_CDNSP_PCI USB_CDNS_SUPPORT USB_CHAOSKEY USB_CHIPIDEA USB_CHIPIDEA_GENERIC USB_CHIPIDEA_HOST USB_CHIPIDEA_MSM USB_CHIPIDEA_NPCM USB_CHIPIDEA_PCI USB_CHIPIDEA_UDC USB_CONFIGFS USB_CONFIGFS_ACM USB_CONFIGFS_ECM USB_CONFIGFS_ECM_SUBSET USB_CONFIGFS_EEM USB_CONFIGFS_F_FS USB_CONFIGFS_F_HID USB_CONFIGFS_F_LB_SS USB_CONFIGFS_F_MIDI USB_CONFIGFS_F_MIDI2 USB_CONFIGFS_F_PRINTER USB_CONFIGFS_F_TCM USB_CONFIGFS_F_UAC1 USB_CONFIGFS_F_UAC1_LEGACY USB_CONFIGFS_F_UAC2 USB_CONFIGFS_F_UVC USB_CONFIGFS_MASS_STORAGE USB_CONFIGFS_NCM USB_CONFIGFS_OBEX USB_CONFIGFS_PHONET USB_CONFIGFS_RNDIS USB_CONFIGFS_SERIAL USB_CONN_GPIO USB_CXACRU USB_CYPRESS_CY7C63 USB_CYTHERM USB_DSBR USB_DUMMY_HCD USB_DWC2 USB_DWC2_HOST USB_DWC2_PCI USB_DWC3 USB_DWC3_GADGET USB_DWC3_GENERIC_PLAT USB_DWC3_HAPS USB_DWC3_OF_SIMPLE USB_DWC3_PCI USB_DWC3_ULPI USB_DYNAMIC_MINORS USB_EG20T USB_EHCI_FSL USB_EHCI_HCD_PLATFORM USB_EHCI_ROOT_HUB_TT USB_EHSET_TEST_FIXTURE USB_EMI26 USB_EMI62 USB_EPSON2888 USB_EZUSB_FX2 USB_FEW_INIT_RETRIES USB_F_ACM USB_F_ECM USB_F_EEM USB_F_FS USB_F_HID USB_F_MASS_STORAGE USB_F_MIDI USB_F_MIDI2 USB_F_NCM USB_F_OBEX USB_F_PHONET USB_F_PRINTER USB_F_RNDIS USB_F_SERIAL USB_F_SS_LB USB_F_SUBSET USB_F_TCM USB_F_UAC1 USB_F_UAC1_LEGACY USB_F_UAC2 USB_F_UVC USB_GADGET USB_GADGETFS USB_GADGET_DEBUG_FILES USB_GADGET_DEBUG_FS USB_GL860 USB_GOKU USB_GR_UDC USB_GSPCA USB_GSPCA_BENQ USB_GSPCA_CONEX USB_GSPCA_CPIA1 USB_GSPCA_DTCS033 USB_GSPCA_ETOMS USB_GSPCA_FINEPIX USB_GSPCA_JEILINJ USB_GSPCA_JL2005BCD USB_GSPCA_KINECT USB_GSPCA_KONICA USB_GSPCA_MARS USB_GSPCA_MR97310A USB_GSPCA_NW80X USB_GSPCA_OV519 USB_GSPCA_OV534 USB_GSPCA_OV534_9 USB_GSPCA_PAC207 USB_GSPCA_PAC7302 USB_GSPCA_PAC7311 USB_GSPCA_SE401 USB_GSPCA_SN9C2028 USB_GSPCA_SN9C20X USB_GSPCA_SONIXB USB_GSPCA_SONIXJ USB_GSPCA_SPCA1528 USB_GSPCA_SPCA500 USB_GSPCA_SPCA501 USB_GSPCA_SPCA505 USB_GSPCA_SPCA506 USB_GSPCA_SPCA508 USB_GSPCA_SPCA561 USB_GSPCA_SQ905 USB_GSPCA_SQ905C USB_GSPCA_SQ930X USB_GSPCA_STK014 USB_GSPCA_STK1135 USB_GSPCA_STV0680 USB_GSPCA_SUNPLUS USB_GSPCA_T613 USB_GSPCA_TOPRO USB_GSPCA_TOUPTEK USB_GSPCA_TV8532 USB_GSPCA_VC032X USB_GSPCA_VICAM USB_GSPCA_XIRLINK_CIT USB_GSPCA_ZC3XX USB_HACKRF USB_HCD_BCMA USB_HCD_SSB USB_HSIC_USB3503 USB_HSIC_USB4604 USB_HSO USB_HUB_USB251XB USB_IDMOUSE USB_IOWARRIOR USB_IPHETH USB_ISIGHTFW USB_ISP116X_HCD USB_ISP1301 USB_ISP1760 USB_ISP1760_DUAL_ROLE USB_ISP1760_HCD USB_ISP1761_UDC USB_KAWETH USB_KC2190 USB_KEENE USB_LAN78XX USB_LCD USB_LD USB_LEDS_TRIGGER_USBPORT USB_LED_TRIG USB_LEGOTOWER USB_LGM_PHY USB_LIBCOMPOSITE USB_LINK_LAYER_TEST USB_M5602 USB_MA901 USB_MAX3420_UDC USB_MAX3421_HCD USB_MDC800 USB_MICROTEK USB_MR800 USB_MSI2500 USB_MUSB_DUAL_ROLE USB_MUSB_HDRC USB_NET2280 USB_NET_AQC111 USB_NET_AX88179_178A USB_NET_AX8817X USB_NET_CDCETHER USB_NET_CDC_EEM USB_NET_CDC_MBIM USB_NET_CDC_NCM USB_NET_CDC_SUBSET USB_NET_CDC_SUBSET_ENABLE USB_NET_CH9200 USB_NET_CX82310_ETH USB_NET_DM9601 USB_NET_GL620A USB_NET_HUAWEI_CDC_NCM USB_NET_INT51X1 USB_NET_KALMIA USB_NET_MCS7830 USB_NET_NET1080 USB_NET_PLUSB USB_NET_QMI_WWAN USB_NET_RNDIS_HOST USB_NET_SMSC75XX USB_NET_SMSC95XX USB_NET_SR9700 USB_NET_SR9800 USB_NET_ZAURUS USB_OHCI_HCD_PLATFORM USB_OTG USB_OTG_FSM USB_OXU210HP_HCD USB_PEGASUS USB_PULSE8_CEC USB_PWC USB_PWC_INPUT_EVDEV USB_PXA27X USB_R8A66597 USB_R8A66597_HCD USB_RAINSHADOW_CEC USB_RAREMONO USB_RAW_GADGET USB_RTL8150 USB_RTL8152 USB_RTL8153_ECM USB_S2255 USB_SERIAL USB_SERIAL_AIRCABLE USB_SERIAL_ARK3116 USB_SERIAL_BELKIN USB_SERIAL_CH341 USB_SERIAL_CONSOLE USB_SERIAL_CP210X USB_SERIAL_CYBERJACK USB_SERIAL_CYPRESS_M8 USB_SERIAL_DEBUG USB_SERIAL_DIGI_ACCELEPORT USB_SERIAL_EDGEPORT USB_SERIAL_EDGEPORT_TI USB_SERIAL_EMPEG USB_SERIAL_F81232 USB_SERIAL_F8153X USB_SERIAL_FTDI_SIO USB_SERIAL_GARMIN USB_SERIAL_GENERIC USB_SERIAL_IPAQ USB_SERIAL_IPW USB_SERIAL_IR USB_SERIAL_IUU USB_SERIAL_KEYSPAN USB_SERIAL_KEYSPAN_PDA USB_SERIAL_KLSI USB_SERIAL_KOBIL_SCT USB_SERIAL_MCT_U232 USB_SERIAL_METRO USB_SERIAL_MOS7715_PARPORT USB_SERIAL_MOS7720 USB_SERIAL_MOS7840 USB_SERIAL_MXUPORT USB_SERIAL_NAVMAN USB_SERIAL_OMNINET USB_SERIAL_OPTICON USB_SERIAL_OPTION USB_SERIAL_OTI6858 USB_SERIAL_PL2303 USB_SERIAL_QCAUX USB_SERIAL_QT2 USB_SERIAL_QUALCOMM USB_SERIAL_SAFE USB_SERIAL_SIERRAWIRELESS USB_SERIAL_SIMPLE USB_SERIAL_SPCP8X5 USB_SERIAL_SSU100 USB_SERIAL_SYMBOL USB_SERIAL_TI USB_SERIAL_UPD78F0730 USB_SERIAL_VISOR USB_SERIAL_WHITEHEAT USB_SERIAL_WISHBONE USB_SERIAL_WWAN USB_SERIAL_XR USB_SERIAL_XSENS_MT USB_SEVSEG USB_SI470X USB_SI4713 USB_SIERRA_NET USB_SISUSBVGA USB_SL811_CS USB_SL811_HCD USB_SL811_HCD_ISO USB_SNP_CORE USB_SPEEDTOUCH USB_STORAGE_ALAUDA USB_STORAGE_CYPRESS_ATACB USB_STORAGE_DATAFAB USB_STORAGE_ENE_UB6250 USB_STORAGE_FREECOM USB_STORAGE_ISD200 USB_STORAGE_JUMPSHOT USB_STORAGE_KARMA USB_STORAGE_ONETOUCH USB_STORAGE_SDDR09 USB_STORAGE_SDDR55 USB_STORAGE_USBAT USB_STV06XX USB_TEST USB_TMC USB_TRANCEVIBRATOR USB_UAS USB_UEAGLEATM USB_ULPI_BUS USB_USBNET USB_USS720 USB_U_AUDIO USB_U_ETHER USB_U_SERIAL USB_VIDEO_CLASS USB_VIDEO_CLASS_INPUT_EVDEV USB_VL600 USB_WDM USB_XHCI_DBGCAP USB_XHCI_PCI_RENESAS USB_XHCI_PLATFORM USB_XUSBATM USB_YUREX USERFAULTFD USERIO USER_RETURN_NOTIFIER UVC_COMMON U_SERIAL_CONSOLE V4L2_MEM2MEM_DEV V4L_TEST_DRIVERS VALIDATE_FS_PARSER VDPA VDPA_SIM VDPA_SIM_BLOCK VDPA_SIM_NET VETH VFIO VFIO_DEVICE_CDEV VFIO_PCI VFIO_PCI_CORE VFIO_PCI_INTX VFIO_VIRQFD VGASTATE VHOST VHOST_CROSS_ENDIAN_LEGACY VHOST_IOTLB VHOST_NET VHOST_RING VHOST_TASK VHOST_VDPA VHOST_VSOCK VIDEO VIDEOBUF2_CORE VIDEOBUF2_DMA_CONTIG VIDEOBUF2_DMA_SG VIDEOBUF2_MEMOPS VIDEOBUF2_V4L2 VIDEOBUF2_VMALLOC VIDEOMODE_HELPERS VIDEO_AU0828 VIDEO_AU0828_RC VIDEO_AU0828_V4L2 VIDEO_CS53L32A VIDEO_CX231XX VIDEO_CX231XX_ALSA VIDEO_CX231XX_DVB VIDEO_CX231XX_RC VIDEO_CX2341X VIDEO_CX25840 VIDEO_DEV VIDEO_EM28XX VIDEO_EM28XX_ALSA VIDEO_EM28XX_DVB VIDEO_EM28XX_RC VIDEO_EM28XX_V4L2 VIDEO_GO7007 VIDEO_GO7007_LOADER VIDEO_GO7007_USB VIDEO_GO7007_USB_S2250_BOARD VIDEO_HDPVR VIDEO_MSP3400 VIDEO_PVRUSB2 VIDEO_PVRUSB2_DVB VIDEO_PVRUSB2_SYSFS VIDEO_SAA711X VIDEO_STK1160 VIDEO_TUNER VIDEO_TVEEPROM VIDEO_USBTV VIDEO_V4L2_I2C VIDEO_V4L2_SUBDEV_API VIDEO_V4L2_TPG VIDEO_VICODEC VIDEO_VIM2M VIDEO_VIMC VIDEO_VIVID VIDEO_VIVID_CEC VIDEO_WM8775 VIPERBOARD_ADC VIRTIO_BALLOON VIRTIO_DMA_SHARED_BUFFER VIRTIO_MEM VIRTIO_MMIO VIRTIO_MMIO_CMDLINE_DEVICES VIRTIO_PMEM VIRTIO_VDPA VIRTIO_VSOCKETS VIRTIO_VSOCKETS_COMMON VIRT_WIFI VIRT_XFER_TO_GUEST_WORK VLAN_8021Q VLAN_8021Q_GVRP VLAN_8021Q_MVRP VMWARE_VMCI VMXNET3 VP_VDPA VSOCKETS VSOCKETS_DIAG VSOCKETS_LOOPBACK VSOCKMON VT_HW_CONSOLE_BINDING VXFS_FS WANT_DEV_COREDUMP WEXT_CORE WEXT_PROC WIREGUARD WIRELESS WLAN WLAN_VENDOR_ADMTEK WLAN_VENDOR_SILABS X86_FRED X86_SGX X86_SGX_KVM X86_USER_SHADOW_STACK XDP_SOCKETS XDP_SOCKETS_DIAG XFRM_ESPINTCP XFRM_INTERFACE XFRM_IPCOMP XFRM_MIGRATE XFRM_OFFLOAD XFRM_STATISTICS XFRM_SUB_POLICY XFRM_USER_COMPAT XFS_BTREE_IN_MEM XFS_DRAIN_INTENTS XFS_FS XFS_LIVE_HOOKS XFS_MEMORY_BUFS XFS_ONLINE_REPAIR XFS_ONLINE_SCRUB XFS_POSIX_ACL XFS_QUOTA XFS_RT XILLYBUS_CLASS XILLYUSB XOR_BLOCKS XOR_BLOCKS_ARCH YENTA YENTA_ENE_TUNE YENTA_O2 YENTA_RICOH YENTA_TI YENTA_TOSHIBA ZEROPLUS_FF ZLIB_DEFLATE ZONEFS_FS ZRAM ZRAM_BACKEND_FORCE_LZO ZRAM_BACKEND_LZO ZRAM_DEF_COMP_LZO ZSMALLOC ZSTD_COMPRESS ZSWAP ZSWAP_COMPRESSOR_DEFAULT_842 ZSWAP_DEFAULT_ON ZSWAP_SHRINKER_DEFAULT_ON] disabling configs for [locking atomic_sleep hang memleak ubsan kasan], they are not needed picked [v7.1 v7.0 v6.19 v6.17 v6.15 v6.13 v6.11 v6.9 v6.6 v6.3 v6.0 v5.17 v5.14 v5.11 v5.8 v5.5 v5.2 v4.20 v4.19] out of 44 release tags testing release v7.1 testing commit 8cd9520d35a6c38db6567e97dd93b1f11f185dc6 gcc compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 kernel signature: 6daf5bf957380a26839cf74fa24ef1c08f8dc71ecfbc7659ae770928dc5ad62a all runs: crashed: WARNING in usb_ep_enable representative crash: WARNING in usb_ep_enable, types: [WARNING] testing release v7.0 testing commit 028ef9c96e96197026887c0f092424679298aae8 gcc compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 kernel signature: 4bce8ed14e54dfc153eae3a22abe3d40ea6baa61890567f879288e82c032e5ed all runs: crashed: WARNING in usb_ep_enable representative crash: WARNING in usb_ep_enable, types: [WARNING] testing release v6.19 testing commit 05f7e89ab9731565d8a62e3b5d1ec206485eeb0b gcc compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 kernel signature: 194daeb65c5946355ac72a29daee16c98ee9f87c6b9e98b7d8c49a92deb3d5e3 all runs: crashed: WARNING in usb_ep_enable representative crash: WARNING in usb_ep_enable, types: [WARNING] testing release v6.17 testing commit e5f0a698b34ed76002dc5cff3804a61c80233a7a gcc compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 kernel signature: eb807c402443676356d38d3c55909f4bc10bb8db4535963fdd24627da15cec9d all runs: crashed: WARNING in usb_ep_enable representative crash: WARNING in usb_ep_enable, types: [WARNING] testing release v6.15 testing commit 0ff41df1cb268fc69e703a08a57ee14ae967d0ca gcc compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 kernel signature: 6ef3e50280b84f1eb074ac671ac9b698e51a1951f1986fff1cca3f71e0542da0 all runs: crashed: WARNING in usb_ep_enable representative crash: WARNING in usb_ep_enable, types: [WARNING] testing release v6.13 testing commit ffd294d346d185b70e28b1a28abe367bbfe53c04 gcc compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 kernel signature: 0166533512e99c5ddf9cb32ff5518f8f04aec3f00f28f36a3577fb8b4c448301 all runs: crashed: WARNING in usb_ep_enable representative crash: WARNING in usb_ep_enable, types: [WARNING] testing release v6.11 testing commit 98f7e32f20d28ec452afb208f9cffc08448a2652 gcc compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 kernel signature: 2298d3c722636fab0a5436a37f669c7927961c474074cd7f306b71944c79716e all runs: crashed: WARNING in usb_ep_enable representative crash: WARNING in usb_ep_enable, types: [WARNING] testing release v6.9 testing commit a38297e3fb012ddfa7ce0321a7e5a8daeb1872b6 gcc compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 kernel signature: 9194bbd5ce8d56bf5f78e640e691d58fe7f497e1c6f2aab2d0c5e60089bff53e all runs: OK false negative chance: 0.000 # git bisect start 98f7e32f20d28ec452afb208f9cffc08448a2652 a38297e3fb012ddfa7ce0321a7e5a8daeb1872b6 Bisecting: 14849 revisions left to test after this (roughly 14 steps) [1c5fc27bc48a7f33302536c42184e5208ee66783] Merge tag 'nf-next-24-06-28' of git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf-next into main testing commit 1c5fc27bc48a7f33302536c42184e5208ee66783 gcc compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 kernel signature: 3e39503e7607f3f26e70bd51a091daf114883eec6b6c579e37d8146e42e29c3d all runs: OK false negative chance: 0.000 # git bisect good 1c5fc27bc48a7f33302536c42184e5208ee66783 Bisecting: 7076 revisions left to test after this (roughly 13 steps) [b3ce7a30847a54a7f96a35e609303d8afecd460b] Merge tag 'drm-next-2024-07-18' of https://gitlab.freedesktop.org/drm/kernel testing commit b3ce7a30847a54a7f96a35e609303d8afecd460b gcc compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 kernel signature: 2cdedc86b4c068b734b58a2836c459cddde5ea9a28fbb5c910156d307d35b864 all runs: OK false negative chance: 0.000 # git bisect good b3ce7a30847a54a7f96a35e609303d8afecd460b Bisecting: 3385 revisions left to test after this (roughly 12 steps) [fbc90c042cd1dc7258ebfebe6d226017e5b5ac8c] Merge tag 'mm-stable-2024-07-21-14-50' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm testing commit fbc90c042cd1dc7258ebfebe6d226017e5b5ac8c gcc compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 kernel signature: c10c17a9681056918d0315397635ed0415473a0c05c8abd6a6eb986a81d73a47 all runs: OK false negative chance: 0.000 # git bisect good fbc90c042cd1dc7258ebfebe6d226017e5b5ac8c Bisecting: 1693 revisions left to test after this (roughly 11 steps) [fa63c6434b6f6aaf9d8d599dc899bc0a074cc0ad] net: dsa: vsc73xx: check busy flag in MDIO operations testing commit fa63c6434b6f6aaf9d8d599dc899bc0a074cc0ad gcc compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 kernel signature: 621cf20c4e861c7c4092a7cd1832272dc58e5904097dfec885dc0ac3fd52f894 all runs: OK false negative chance: 0.000 # git bisect good fa63c6434b6f6aaf9d8d599dc899bc0a074cc0ad Bisecting: 843 revisions left to test after this (roughly 10 steps) [72bea05cb1ad486b1a850f584cc93b651579ad2f] Merge tag 'bcachefs-2024-08-24' of git://evilpiepirate.org/bcachefs testing commit 72bea05cb1ad486b1a850f584cc93b651579ad2f gcc compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 kernel signature: 2280a55a9931a8c021da6ad5d102e89636ba165379afbc3e81bd5aaad3709c95 all runs: crashed: WARNING in usb_ep_enable representative crash: WARNING in usb_ep_enable, types: [WARNING] # git bisect bad 72bea05cb1ad486b1a850f584cc93b651579ad2f Bisecting: 424 revisions left to test after this (roughly 9 steps) [e4a55b555db6d2a006551605ef4404529e878cd2] Merge tag 'libnvdimm-fixes-6.11-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm testing commit e4a55b555db6d2a006551605ef4404529e878cd2 gcc compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 kernel signature: 73a3663d12aaac5cbcf59076f05d2f24a0c5a27f1923c25bceacca022fccd454 all runs: crashed: WARNING in usb_ep_enable representative crash: WARNING in usb_ep_enable, types: [WARNING] # git bisect bad e4a55b555db6d2a006551605ef4404529e878cd2 Bisecting: 212 revisions left to test after this (roughly 8 steps) [d74da846046aeec9333e802f5918bd3261fb5509] Merge tag 'platform-drivers-x86-v6.11-3' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86 testing commit d74da846046aeec9333e802f5918bd3261fb5509 gcc compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 kernel signature: 2475bc6e14bf13d3c176a3f50ab7e1191117daa22af1be549a704adb1a69fc69 all runs: crashed: WARNING in usb_ep_enable representative crash: WARNING in usb_ep_enable, types: [WARNING] # git bisect bad d74da846046aeec9333e802f5918bd3261fb5509 Bisecting: 92 revisions left to test after this (roughly 7 steps) [15833fea97c1fdb3b34fceefa4b51177dd57e18f] Merge tag 'drm-fixes-2024-08-10' of https://gitlab.freedesktop.org/drm/kernel testing commit 15833fea97c1fdb3b34fceefa4b51177dd57e18f gcc compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 kernel signature: bd47eec8585463b82d0d43e6063a8a9ae8cc84f3202c7ea038e8ebda8d46a8b5 all runs: OK false negative chance: 0.000 # git bisect good 15833fea97c1fdb3b34fceefa4b51177dd57e18f Bisecting: 47 revisions left to test after this (roughly 6 steps) [84e6da575215154cf6aa1e17661989d3b37bb3c1] Merge tag 'driver-core-6.11-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core testing commit 84e6da575215154cf6aa1e17661989d3b37bb3c1 gcc compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 kernel signature: 9a3b2b8adfbe83598eef4ac6cc01bca31e09b0ffea14fe0213edd34f5c3de770 all runs: OK false negative chance: 0.000 # git bisect good 84e6da575215154cf6aa1e17661989d3b37bb3c1 Bisecting: 26 revisions left to test after this (roughly 5 steps) [65ba8cef0416816b912c04850fc2468329994353] usb: typec: ucsi: Fix a deadlock in ucsi_send_command_common() testing commit 65ba8cef0416816b912c04850fc2468329994353 gcc compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 kernel signature: d441d0be60ba5a98034bbddc25d038c8c86a689fe9ad65f61ecd8042c2e610b4 all runs: crashed: WARNING in usb_ep_enable representative crash: WARNING in usb_ep_enable, types: [WARNING] # git bisect bad 65ba8cef0416816b912c04850fc2468329994353 Bisecting: 10 revisions left to test after this (roughly 3 steps) [973a57891608a98e894db2887f278777f564de18] usb: gadget: core: Check for unset descriptor testing commit 973a57891608a98e894db2887f278777f564de18 gcc compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 kernel signature: c21c4a4a11a19ada1602d40ecdb1be0dac63f3ddcc8e5e71ff6dd6a8bffe7720 all runs: crashed: WARNING in usb_ep_enable representative crash: WARNING in usb_ep_enable, types: [WARNING] # git bisect bad 973a57891608a98e894db2887f278777f564de18 Bisecting: 4 revisions left to test after this (roughly 2 steps) [3ca06e90a7ceb06aaba8a9dc1c59d970824dab23] Merge tag 'usb-serial-6.11-rc1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial into usb-linus testing commit 3ca06e90a7ceb06aaba8a9dc1c59d970824dab23 gcc compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 kernel signature: 7653e7d284ac53273735ab912330f6262fce0811259943bcfd9d24522313d79a all runs: OK false negative chance: 0.000 # git bisect good 3ca06e90a7ceb06aaba8a9dc1c59d970824dab23 Bisecting: 2 revisions left to test after this (roughly 1 step) [228a953e61d6d608a3facc1c3a27b9fb03c99de7] usb: gadget: midi2: Fix the response for FB info with block 0xff testing commit 228a953e61d6d608a3facc1c3a27b9fb03c99de7 gcc compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 kernel signature: af2943714a4532d3bb4e08485ead8920fecbdb3dc70c0f4b59824150680e63b7 all runs: OK false negative chance: 0.000 # git bisect good 228a953e61d6d608a3facc1c3a27b9fb03c99de7 Bisecting: 0 revisions left to test after this (roughly 1 step) [afdcfd3d6fcdeca2735ca8d994c5f2d24a368f0a] usb: vhci-hcd: Do not drop references before new references are gained testing commit afdcfd3d6fcdeca2735ca8d994c5f2d24a368f0a gcc compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 kernel signature: 19c8f6a6cbbb2fed75369fd7d09b6e19223124cdb0dcabd1e665e2cb3c684c1f all runs: OK false negative chance: 0.000 # git bisect good afdcfd3d6fcdeca2735ca8d994c5f2d24a368f0a 973a57891608a98e894db2887f278777f564de18 is the first bad commit commit 973a57891608a98e894db2887f278777f564de18 Author: Chris Wulff Date: Wed Jul 24 21:04:20 2024 -0400 usb: gadget: core: Check for unset descriptor Make sure the descriptor has been set before looking at maxpacket. This fixes a null pointer panic in this case. This may happen if the gadget doesn't properly set up the endpoint for the current speed, or the gadget descriptors are malformed and the descriptor for the speed/endpoint are not found. No current gadget driver is known to have this problem, but this may cause a hard-to-find bug during development of new gadgets. Fixes: 54f83b8c8ea9 ("USB: gadget: Reject endpoints with 0 maxpacket value") Cc: stable@vger.kernel.org Signed-off-by: Chris Wulff Link: https://lore.kernel.org/r/20240725010419.314430-2-crwulff@gmail.com Signed-off-by: Greg Kroah-Hartman drivers/usb/gadget/udc/core.c | 10 ++++------ 1 file changed, 4 insertions(+), 6 deletions(-) accumulated error probability: 0.00 culprit signature: c21c4a4a11a19ada1602d40ecdb1be0dac63f3ddcc8e5e71ff6dd6a8bffe7720 parent signature: 19c8f6a6cbbb2fed75369fd7d09b6e19223124cdb0dcabd1e665e2cb3c684c1f revisions tested: 29, total time: 10h1m27.208364732s (build: 3h17m12.790170983s, test: 4h35m44.143108876s) first bad commit: 973a57891608a98e894db2887f278777f564de18 usb: gadget: core: Check for unset descriptor recipients (to): ["crwulff@gmail.com" "gregkh@linuxfoundation.org"] recipients (cc): [] crash: WARNING in usb_ep_enable ------------[ cut here ]------------ usb_ep_enable: ep129 (ep1in-bulk) has maxpacket 0 WARNING: CPU: 0 PID: 1950 at drivers/usb/gadget/udc/core.c:123 usb_ep_enable+0xee/0x160 drivers/usb/gadget/udc/core.c:122 Modules linked in: CPU: 0 UID: 0 PID: 1950 Comm: udevd Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 RIP: 0010:usb_ep_enable+0xee/0x160 drivers/usb/gadget/udc/core.c:122 Code: c0 7d 0b f4 82 49 c7 c0 fc 93 ef 82 4c 0f 44 c0 49 89 fe 48 c7 c7 8f 31 fc 82 48 c7 c6 5c c8 0a 83 e8 66 5f 6c 00 4c 89 f7 90 <0f> 0b 90 90 e9 5b ff ff ff 48 89 fe 65 8b 05 2b 97 13 7e 83 f8 08 RSP: 0018:ffffc90000003d48 EFLAGS: 00010046 RAX: cb2bce83ce508400 RBX: 00000000ffffffea RCX: cb2bce83ce508400 RDX: 0000000000000002 RSI: ffffffff82f538a5 RDI: ffff8881026ac0e0 RBP: ffff888103f26520 R08: 0000000000001fff R09: ffffffff832ab1b0 R10: 0000000000005ffd R11: 00000000ffffdfff R12: ffff8881023ff528 R13: ffff88810d778000 R14: ffff8881026ac0e0 R15: 0000000000000001 FS: 00007fb85eeb6880(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2e39f9eff8 CR3: 0000000104b44000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: hidg_set_alt+0x5f/0x300 drivers/usb/gadget/function/f_hid.c:826 set_config+0x1e3/0x480 drivers/usb/gadget/composite.c:1018 composite_setup+0xa80/0xe90 drivers/usb/gadget/composite.c:1923 configfs_composite_setup+0x53/0x80 drivers/usb/gadget/configfs.c:1868 dummy_timer+0xb59/0x1030 drivers/usb/gadget/udc/dummy_hcd.c:1919 __run_hrtimer kernel/time/hrtimer.c:1689 [inline] __hrtimer_run_queues+0x137/0x2f0 kernel/time/hrtimer.c:1753 hrtimer_interrupt+0xda/0x370 kernel/time/hrtimer.c:1815 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline] __sysvec_apic_timer_interrupt+0x9b/0x260 arch/x86/kernel/apic/apic.c:1049 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline] sysvec_apic_timer_interrupt+0x92/0xb0 arch/x86/kernel/apic/apic.c:1043 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:__slab_alloc_node mm/slub.c:3861 [inline] RIP: 0010:slab_alloc_node mm/slub.c:4025 [inline] RIP: 0010:kmem_cache_alloc_lru_noprof+0x91/0x290 mm/slub.c:4056 Code: 1b 01 00 00 85 c0 0f 85 13 01 00 00 0f 1f 44 00 00 48 c7 44 24 08 00 00 00 00 65 48 8b 05 77 09 bf 7e 49 8b 0e 48 8b 54 08 08 <4c> 8b 24 08 48 83 7c 08 10 00 0f 95 c0 4d 85 e4 74 1f 84 c0 74 21 RSP: 0018:ffffc900001c3b48 EFLAGS: 00000246 RAX: ffff888237c00000 RBX: 0000000000000cc0 RCX: 0000000000037380 RDX: 00000000000148a8 RSI: 0000000000000138 RDI: ffffffff833c4038 RBP: 0000000000000cc0 R08: 0000000000000000 R09: 00000000000000a9 R10: 0000000000000000 R11: ffffffff81830ca0 R12: 0000000000000000 R13: 0000000000000138 R14: ffff888100a82600 R15: ffffffff814b6b47 __d_alloc+0x27/0x200 fs/dcache.c:1631 d_alloc fs/dcache.c:1711 [inline] d_alloc_parallel+0x37/0x610 fs/dcache.c:2471 lookup_open fs/namei.c:3503 [inline] open_last_lookups fs/namei.c:3647 [inline] path_openat+0x2d8/0xe10 fs/namei.c:3883 do_filp_open+0xaf/0x150 fs/namei.c:3913 do_sys_openat2+0x7a/0xd0 fs/open.c:1416 do_sys_open fs/open.c:1431 [inline] __do_sys_openat fs/open.c:1447 [inline] __se_sys_openat fs/open.c:1442 [inline] __x64_sys_openat+0x7c/0xa0 fs/open.c:1442 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xd7/0x1f0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fb85efa4407 Code: 48 89 fa 4c 89 df e8 38 aa 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff RSP: 002b:00007ffe6aaf2840 EFLAGS: 00000202 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007fb85eeb6880 RCX: 00007fb85efa4407 RDX: 0000000000080141 RSI: 0000561f448cc02e RDI: ffffffffffffff9c RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000000001a4 R11: 0000000000000202 R12: 00000000ffffffff R13: 00000000ffffffff R14: ffffffffffffffff R15: 0000000000000000 ---------------- Code disassembly (best guess): 0: 1b 01 sbb (%rcx),%eax 2: 00 00 add %al,(%rax) 4: 85 c0 test %eax,%eax 6: 0f 85 13 01 00 00 jne 0x11f c: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 11: 48 c7 44 24 08 00 00 movq $0x0,0x8(%rsp) 18: 00 00 1a: 65 48 8b 05 77 09 bf mov %gs:0x7ebf0977(%rip),%rax # 0x7ebf0999 21: 7e 22: 49 8b 0e mov (%r14),%rcx 25: 48 8b 54 08 08 mov 0x8(%rax,%rcx,1),%rdx * 2a: 4c 8b 24 08 mov (%rax,%rcx,1),%r12 <-- trapping instruction 2e: 48 83 7c 08 10 00 cmpq $0x0,0x10(%rax,%rcx,1) 34: 0f 95 c0 setne %al 37: 4d 85 e4 test %r12,%r12 3a: 74 1f je 0x5b 3c: 84 c0 test %al,%al 3e: 74 21 je 0x61