ci2 starts bisection 2025-08-20 20:07:16.615492068 +0000 UTC m=+20010.333442819 bisecting fixing commit since 02b72ccb5f9df707a763d9f7163d7918d3aff0b7 building syzkaller on cfde82699d32eb8844da8b2f2538f45fa5a02f43 ensuring issue is reproducible on original commit 02b72ccb5f9df707a763d9f7163d7918d3aff0b7 testing commit 02b72ccb5f9df707a763d9f7163d7918d3aff0b7 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: db37948507883922bfbe19f5fed98a0f26cee54f637e4ffa0391d8c24d4b8d33 all runs: crashed: general protection fault in mcp_i2c_xfer representative crash: general protection fault in mcp_i2c_xfer, types: [DoS] check whether we can drop unnecessary instrumentation disabling configs for [kasan locking atomic_sleep hang memleak ubsan bug_or_warning], they are not needed testing commit 02b72ccb5f9df707a763d9f7163d7918d3aff0b7 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: f9768d13ecb0050b6c7bcf35ef30141e658f7bc503a2cf5a38a0f664ef6cd320 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in mcp_i2c_xfer representative crash: BUG: unable to handle kernel NULL pointer dereference in mcp_i2c_xfer, types: [NULL-POINTER-DEREFERENCE] the bug reproduces without the instrumentation disabling configs for [ubsan bug_or_warning kasan locking atomic_sleep hang memleak], they are not needed kconfig minimization: base=3829 full=7502 leaves diff=2069 split chunks (needed=false): <2069> split chunk #0 of len 2069 into 5 parts testing without sub-chunk 1/5 disabling configs for [ubsan bug_or_warning kasan locking atomic_sleep hang memleak], they are not needed testing commit 02b72ccb5f9df707a763d9f7163d7918d3aff0b7 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 63fa2e4ac1cbc04a64249c98a6c1d222c4a13050fa6f7e3e28b99f56928b55ad run #0: crashed: BUG: unable to handle kernel NULL pointer dereference in mcp_i2c_xfer run #1: crashed: BUG: unable to handle kernel NULL pointer dereference in mcp_i2c_xfer run #2: crashed: BUG: unable to handle kernel NULL pointer dereference in mcp_i2c_xfer run #3: crashed: BUG: unable to handle kernel NULL pointer dereference in mcp_i2c_xfer run #4: crashed: BUG: unable to handle kernel NULL pointer dereference in mcp_i2c_xfer run #5: crashed: BUG: unable to handle kernel NULL pointer dereference in mcp_i2c_xfer run #6: crashed: BUG: unable to handle kernel NULL pointer dereference in mcp_i2c_xfer run #7: crashed: BUG: unable to handle kernel NULL pointer dereference in mcp_i2c_xfer run #8: OK run #9: OK representative crash: BUG: unable to handle kernel NULL pointer dereference in mcp_i2c_xfer, types: [NULL-POINTER-DEREFERENCE] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [locking atomic_sleep hang memleak ubsan bug_or_warning kasan], they are not needed testing commit 02b72ccb5f9df707a763d9f7163d7918d3aff0b7 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: bccf13559829dc16e484b32473da5df8c5ede68a06e6fcc586c2e85c8b707be2 run #0: ignore: lost connection to test machine run #1: OK run #2: OK run #3: OK run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK false negative chance: 0.000 testing without sub-chunk 3/5 disabling configs for [ubsan bug_or_warning kasan locking atomic_sleep hang memleak], they are not needed testing commit 02b72ccb5f9df707a763d9f7163d7918d3aff0b7 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: a10f04c31f748ede43394e14e677374aa77b4febc2ff2014086e1fa2e2338db0 run #0: crashed: BUG: unable to handle kernel NULL pointer dereference in mcp_i2c_xfer run #1: crashed: BUG: unable to handle kernel NULL pointer dereference in mcp_i2c_xfer run #2: crashed: BUG: unable to handle kernel NULL pointer dereference in mcp_i2c_xfer run #3: crashed: BUG: unable to handle kernel NULL pointer dereference in mcp_i2c_xfer run #4: crashed: BUG: unable to handle kernel NULL pointer dereference in mcp_i2c_xfer run #5: crashed: BUG: unable to handle kernel NULL pointer dereference in mcp_i2c_xfer run #6: crashed: BUG: unable to handle kernel NULL pointer dereference in mcp_i2c_xfer run #7: crashed: BUG: unable to handle kernel NULL pointer dereference in mcp_i2c_xfer run #8: crashed: BUG: unable to handle kernel NULL pointer dereference in mcp_i2c_xfer run #9: OK representative crash: BUG: unable to handle kernel NULL pointer dereference in mcp_i2c_xfer, types: [NULL-POINTER-DEREFERENCE] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [memleak ubsan bug_or_warning kasan locking atomic_sleep hang], they are not needed testing commit 02b72ccb5f9df707a763d9f7163d7918d3aff0b7 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 9d6ae7e6df3fd580537ff9d1c7b7df51a2f566f51f4ee4cfaa669499b7135377 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in mcp_i2c_xfer representative crash: BUG: unable to handle kernel NULL pointer dereference in mcp_i2c_xfer, types: [NULL-POINTER-DEREFERENCE] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [atomic_sleep hang memleak ubsan bug_or_warning kasan locking], they are not needed testing commit 02b72ccb5f9df707a763d9f7163d7918d3aff0b7 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: fc15285c4e80b333efa0cc06dc1ac275f7c28c65780c81833a0c2380195a6251 all runs: OK false negative chance: 0.000 minimized to 827 configs; suspects: [6LOWPAN ARCH_ENABLE_MEMORY_HOTREMOVE ASUS_WMI ATM BCMA BLK_DEV_ZONED BPF_SYSCALL CARDBUS CFG80211 CFG80211_WEXT CHARGER_BQ24190 CMA COMMON_CLK CONTIG_ALLOC CRYPTO_842 CRYPTO_LZ4 CRYPTO_LZ4HC CRYPTO_LZO CRYPTO_ZSTD DAX DLM DRM DRM_PANEL DRM_PANEL_EDP DRM_PANEL_ORIENTATION_QUIRKS DRM_SIMPLEDRM DRM_TTM DRM_TTM_HELPER DRM_UDL DRM_VGEM DRM_VIRTIO_GPU DRM_VKMS DRM_VMWGFX DRM_VRAM_HELPER DUMMY DVB_AF9013 DVB_AF9033 DVB_AS102 DVB_AS102_FE DVB_B2C2_FLEXCOP DVB_B2C2_FLEXCOP_USB DVB_CORE DVB_DIB3000MB DVB_DIB3000MC DVB_EC100 DVB_GP8PSK_FE DVB_RTL2830 DVB_RTL2832 DVB_RTL2832_SDR DVB_TEST_DRIVERS DVB_TTUSB_BUDGET DVB_TTUSB_DEC DVB_USB DVB_USB_A800 DVB_USB_AF9005 DVB_USB_AF9005_REMOTE DVB_USB_AF9015 DVB_USB_AF9035 DVB_USB_ANYSEE DVB_USB_AU6610 DVB_USB_AZ6007 DVB_USB_AZ6027 DVB_USB_CE6230 DVB_USB_CINERGY_T2 DVB_USB_CXUSB DVB_USB_CXUSB_ANALOG DVB_USB_DIB0700 DVB_USB_DIB3000MC DVB_USB_DIBUSB_MB DVB_USB_DIBUSB_MC DVB_USB_DIGITV DVB_USB_DTT200U DVB_USB_DTV5100 DVB_USB_DVBSKY DVB_USB_DW2102 DVB_USB_EC168 DVB_USB_GL861 DVB_USB_GP8PSK DVB_USB_LME2510 DVB_USB_M920X DVB_USB_MXL111SF DVB_USB_NOVA_T_USB2 DVB_USB_OPERA1 DVB_USB_PCTV452E DVB_USB_RTL28XXU DVB_USB_TECHNISAT_USB2 DVB_USB_TTUSB2 DVB_USB_UMT_010 DVB_USB_V2 DVB_USB_VP702X DVB_USB_VP7045 DVB_USB_ZD1301 DVB_VIDTV DVB_ZL10353 ECRYPT_FS ECRYPT_FS_MESSAGING EDAC EEPROM_93CX6 EFS_FS ENCRYPTED_KEYS EQUALIZER EROFS_FS EROFS_FS_POSIX_ACL EROFS_FS_SECURITY EROFS_FS_XATTR EROFS_FS_ZIP EVM EVM_ADD_XATTRS EVM_ATTR_FSUUID EXFAT_FS EXPORTFS_BLOCK_OPS EXT3_FS EXT3_FS_POSIX_ACL EXT3_FS_SECURITY EXTCON EXTCON_INTEL_CHT_WC EXTCON_PTN5150 EXTCON_USBC_TUSB320 F2FS_CHECK_FS F2FS_FAULT_INJECTION F2FS_FS F2FS_FS_COMPRESSION F2FS_FS_LZ4 F2FS_FS_LZ4HC F2FS_FS_LZO F2FS_FS_LZORLE F2FS_FS_POSIX_ACL F2FS_FS_SECURITY F2FS_FS_XATTR F2FS_FS_ZSTD F2FS_STAT_FS FANOTIFY FANOTIFY_ACCESS_PERMISSIONS FB FB_CFB_COPYAREA FB_CFB_FILLRECT FB_CFB_IMAGEBLIT FB_CMDLINE FB_DEFERRED_IO FB_NOTIFY FB_SYS_COPYAREA FB_SYS_FILLRECT FB_SYS_FOPS FB_SYS_IMAGEBLIT FB_TILEBLITTING FB_VESA FB_VGA16 FB_VIRTUAL FDDI FIREWIRE FIREWIRE_NET FIREWIRE_OHCI FIREWIRE_SBP2 FONT_8x16 FONT_8x8 FONT_SUPPORT FRAMEBUFFER_CONSOLE FRAMEBUFFER_CONSOLE_DETECT_PRIMARY FRAMEBUFFER_CONSOLE_ROTATION FRONTSWAP FS_DAX FS_DAX_PMD FS_ENCRYPTION FS_ENCRYPTION_ALGS FS_VERITY FS_VERITY_BUILTIN_SIGNATURES FTL FUSE_DAX FUSE_FS FW_LOADER_COMPRESS FW_LOADER_PAGED_BUF FW_LOADER_SYSFS FW_LOADER_USER_HELPER FW_LOADER_USER_HELPER_FALLBACK GACT_PROB GARP GENERIC_PHY GET_FREE_REGION GFS2_FS GFS2_FS_LOCKING_DLM GNSS GNSS_USB GOOGLE_COREBOOT_TABLE GOOGLE_FIRMWARE GOOGLE_MEMCONSOLE GOOGLE_MEMCONSOLE_COREBOOT GOOGLE_VPD GPIOLIB GPIOLIB_IRQCHIP GPIO_ACPI GPIO_DLN2 GPIO_VIPERBOARD GREENASIA_FF GREYBUS GREYBUS_BRIDGED_PHY GREYBUS_ES2 GREYBUS_HID GREYBUS_USB GTP GUEST_PERF_EVENTS HAVE_ARCH_NODE_DEV_GROUP HAVE_ARCH_USERFAULTFD_MINOR HAVE_ARCH_USERFAULTFD_WP HAVE_BOOTMEM_INFO_NODE HAVE_CLK_PREPARE HAVE_KVM_CPU_RELAX_INTERCEPT HAVE_KVM_DIRTY_RING HAVE_KVM_DIRTY_RING_ACQ_REL HAVE_KVM_DIRTY_RING_TSO HAVE_KVM_EVENTFD HAVE_KVM_IRQCHIP HAVE_KVM_IRQFD HAVE_KVM_IRQ_BYPASS HAVE_KVM_IRQ_ROUTING HAVE_KVM_MSI HAVE_KVM_NO_POLL HAVE_KVM_PFNCACHE HAVE_KVM_PM_NOTIFIER HAVE_SCHED_AVG_IRQ HDLC HDLC_CISCO HDLC_FR HDLC_PPP HDLC_RAW HDLC_RAW_ETH HDLC_X25 HDMI HFSPLUS_FS HFS_FS HID_ACCUTOUCH HID_ACRUX HID_ACRUX_FF HID_ALPS HID_APPLEIR HID_ASUS HID_AUREAL HID_BATTERY_STRENGTH HID_BETOP_FF HID_BIGBEN_FF HID_CMEDIA HID_CORSAIR HID_COUGAR HID_CP2112 HID_CREATIVE_SB0540 HID_ELAN HID_ELECOM HID_ELO HID_EMS_FF HID_FT260 HID_GEMBIRD HID_GFRM HID_GLORIOUS HID_GREENASIA HID_GT683R HID_HOLTEK HID_ICADE HID_JABRA HID_KEYTOUCH HID_KYE HID_LCPOWER HID_LED HID_LENOVO HID_LETSKETCH HID_LOGITECH_DJ HID_LOGITECH_HIDPP HID_MACALLY HID_MAGICMOUSE HID_MALTRON HID_MAYFLASH HID_MCP2221 HID_MEGAWORLD_FF HID_MULTITOUCH HID_NTI HID_ORTEK HID_PENMOUNT HID_PICOLCD HID_PICOLCD_BACKLIGHT HID_PICOLCD_CIR HID_PICOLCD_FB HID_PICOLCD_LCD HID_PICOLCD_LEDS HID_PLANTRONICS HID_PRIMAX HID_PRODIKEYS HID_PXRC HID_RAZER HID_RETRODE HID_RMI HID_ROCCAT HID_SAITEK HID_SEMITEK HID_SENSOR_ACCEL_3D HID_SENSOR_ALS HID_SENSOR_CUSTOM_INTEL_HINGE HID_SENSOR_CUSTOM_SENSOR HID_SENSOR_DEVICE_ROTATION HID_SENSOR_GYRO_3D HID_SENSOR_HUB HID_SENSOR_HUMIDITY HID_SENSOR_IIO_COMMON HID_SENSOR_IIO_TRIGGER HID_SENSOR_INCLINOMETER_3D HID_SENSOR_MAGNETOMETER_3D HID_SENSOR_PRESS HID_SENSOR_PROX HID_SENSOR_TEMP HID_SIGMAMICRO HID_SPEEDLINK HID_STEAM HID_STEELSERIES HID_THINGM HID_TIVO HID_TOPRE HID_TWINHAN HID_U2FZERO HID_UCLOGIC HID_UDRAW_PS3 HID_VIEWSONIC HID_VIVALDI HID_VIVALDI_COMMON HID_VRC2 HID_WACOM HID_WALTOP HID_WIIMOTE HID_XIAOMI HID_XINMO HID_ZEROPLUS HID_ZYDACRON HMM_MIRROR HOLTEK_FF HOTPLUG_PCI_PCIE HPET_MMAP HPET_MMAP_DEFAULT HPFS_FS I2C_ALGOBIT I2C_CHARDEV I2C_CP2615 I2C_DESIGNWARE_CORE I2C_DESIGNWARE_PLATFORM I2C_DIOLAN_U2C I2C_DLN2 I2C_MUX I2C_MUX_REG I2C_ROBOTFUZZ_OSIF I2C_SI4713 I2C_SLAVE I2C_SLAVE_EEPROM I2C_TINY_USB I2C_VIPERBOARD IEEE802154 IEEE802154_6LOWPAN IEEE802154_ATUSB IEEE802154_DRIVERS IEEE802154_HWSIM IEEE802154_NL802154_EXPERIMENTAL 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IP_NF_MATCH_RPFILTER IP_NF_MATCH_TTL IP_NF_RAW IP_NF_SECURITY IP_NF_TARGET_CLUSTERIP IP_NF_TARGET_ECN IP_NF_TARGET_NETMAP IP_NF_TARGET_REDIRECT IP_NF_TARGET_SYNPROXY IP_NF_TARGET_TTL IP_ROUTE_CLASSID IP_SCTP IP_SET IP_SET_BITMAP_IP IP_SET_BITMAP_IPMAC IP_SET_BITMAP_PORT IP_SET_HASH_IP IP_SET_HASH_IPMAC IP_SET_HASH_IPMARK IP_SET_HASH_IPPORT IP_SET_HASH_IPPORTIP IP_SET_HASH_IPPORTNET IP_SET_HASH_MAC IP_SET_HASH_NET IP_SET_HASH_NETIFACE IP_SET_HASH_NETNET IP_SET_HASH_NETPORT IP_SET_HASH_NETPORTNET IP_SET_LIST_SET IP_VS IP_VS_DH IP_VS_FO IP_VS_FTP IP_VS_IPV6 IP_VS_LBLC IP_VS_LBLCR IP_VS_LC IP_VS_MH IP_VS_NFCT IP_VS_NQ IP_VS_PROTO_TCP IRQ_REMAP IRQ_TIME_ACCOUNTING KVM KVM_INTEL LAPB LCD_CLASS_DEVICE LIBNVDIMM MAC802154 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_DLN2 MFD_VIPERBOARD MPTCP MTD 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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_MV_U3D USB_MV_UDC USB_NET2272 USB_NET2272_DMA 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_RNDIS_WLAN 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_ROLES_INTEL_XHCI USB_ROLE_SWITCH 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_U132_HCD 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 USERMODE_DRIVER USER_RETURN_NOTIFIER U_SERIAL_CONSOLE V4L2_MEM2MEM_DEV V4L_TEST_DRIVERS VALIDATE_FS_PARSER VDPA VDPA_SIM VDPA_SIM_BLOCK VDPA_SIM_NET VDPA_USER VETH VFIO VFIO_IOMMU_TYPE1 VFIO_PCI VFIO_PCI_CORE VFIO_PCI_INTX VFIO_PCI_MMAP VFIO_VIRQFD VGASTATE VHOST VHOST_CROSS_ENDIAN_LEGACY VHOST_IOTLB VHOST_NET VHOST_RING VHOST_VDPA VHOST_VSOCK 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_STK1160_COMMON 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_FS VIRTIO_MEM VIRTIO_MMIO VIRTIO_MMIO_CMDLINE_DEVICES VIRTIO_PMEM VIRTIO_VDPA VIRTIO_VSOCKETS VIRTIO_VSOCKETS_COMMON VIRT_WIFI VLAN_8021Q VLAN_8021Q_GVRP VLAN_8021Q_MVRP VMAP_PFN VMWARE_VMCI VMXNET3 VP_VDPA VSOCKETS VSOCKETS_DIAG VSOCKETS_LOOPBACK VSOCKMON VT_HW_CONSOLE_BINDING VXFS_FS WAN WANT_DEV_COREDUMP WEXT_CORE WEXT_PRIV WEXT_PROC WIREGUARD WIRELESS WIRELESS_EXT WLAN WLAN_VENDOR_ADMTEK WLAN_VENDOR_SILABS X86_SGX X86_SGX_KVM X86_X2APIC XARRAY_MULTI XDP_SOCKETS XDP_SOCKETS_DIAG XFRM_ESPINTCP XFRM_INTERFACE XFRM_IPCOMP XFRM_MIGRATE XFRM_OFFLOAD XFRM_STATISTICS XFRM_SUB_POLICY XFRM_USER_COMPAT XFS_FS XFS_POSIX_ACL XFS_QUOTA XFS_RT XILLYBUS_CLASS XILLYUSB XOR_BLOCKS YENTA YENTA_ENE_TUNE YENTA_O2 YENTA_RICOH YENTA_TI YENTA_TOSHIBA ZBUD ZEROPLUS_FF ZLIB_DEFLATE ZONEFS_FS ZONE_DEVICE ZPOOL ZRAM ZRAM_DEF_COMP_LZORLE ZSMALLOC ZSTD_COMPRESS ZSWAP ZSWAP_COMPRESSOR_DEFAULT_LZO ZSWAP_DEFAULT_ON ZSWAP_ZPOOL_DEFAULT_ZBUD] disabling configs for [hang memleak ubsan bug_or_warning kasan locking atomic_sleep], they are not needed testing current HEAD 0bc96de781b4da716c8dbd248af4b26d8d8341f5 testing commit 0bc96de781b4da716c8dbd248af4b26d8d8341f5 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 41925973e349326ce3f713a6fec13050494851f61b5c6b81ef82a627a25b191d all runs: OK false negative chance: 0.000 # git bisect start 0bc96de781b4da716c8dbd248af4b26d8d8341f5 02b72ccb5f9df707a763d9f7163d7918d3aff0b7 Bisecting: 833 revisions left to test after this (roughly 10 steps) [84eca597baa346f09b30accdaeca10ced3eeba2d] media: cxusb: no longer judge rbuf when the write fails determine whether the revision contains the guilty commit revision 02b72ccb5f9df707a763d9f7163d7918d3aff0b7 crashed and is reachable testing commit 84eca597baa346f09b30accdaeca10ced3eeba2d gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 971de7ef8169e369c2e9c9d05c1c6356db20e729026273068fca0f981b39a6ed all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in mcp_i2c_xfer representative crash: BUG: unable to handle kernel NULL pointer dereference in mcp_i2c_xfer, types: [NULL-POINTER-DEREFERENCE] # git bisect good 84eca597baa346f09b30accdaeca10ced3eeba2d Bisecting: 416 revisions left to test after this (roughly 9 steps) [3baad7b9308e09a7bad64159f5863a70643cca11] fix proc_sys_compare() handling of in-lookup dentries determine whether the revision contains the guilty commit revision 02b72ccb5f9df707a763d9f7163d7918d3aff0b7 crashed and is reachable testing commit 3baad7b9308e09a7bad64159f5863a70643cca11 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: e1a1c84039b3c9a3ed94dd07161a52dfca2743f041ca89f91b0f324cfc90ed65 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in mcp_i2c_xfer representative crash: BUG: unable to handle kernel NULL pointer dereference in mcp_i2c_xfer, types: [NULL-POINTER-DEREFERENCE] # git bisect good 3baad7b9308e09a7bad64159f5863a70643cca11 Bisecting: 208 revisions left to test after this (roughly 8 steps) [4b263f7b829a04261ef417cc613d1c39b8967ce9] usb: typec: tcpm: allow switching to mode accessory to mux properly determine whether the revision contains the guilty commit revision 3baad7b9308e09a7bad64159f5863a70643cca11 crashed and is reachable testing commit 4b263f7b829a04261ef417cc613d1c39b8967ce9 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 77232a306ccc5dfd7efd73860aef2044b2ec049e9d9925fb5b06da10a328e3c6 all runs: OK false negative chance: 0.000 # git bisect bad 4b263f7b829a04261ef417cc613d1c39b8967ce9 Bisecting: 103 revisions left to test after this (roughly 7 steps) [636084f785e279b10c449a6eace70c64b73d2a96] isofs: Verify inode mode when loading from disk determine whether the revision contains the guilty commit revision 02b72ccb5f9df707a763d9f7163d7918d3aff0b7 crashed and is reachable testing commit 636084f785e279b10c449a6eace70c64b73d2a96 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 3464119c8237c050bd85ce90193e7f19e2fd28876cdc85833689fb80c2f131d6 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in mcp_i2c_xfer representative crash: BUG: unable to handle kernel NULL pointer dereference in mcp_i2c_xfer, types: [NULL-POINTER-DEREFERENCE] # git bisect good 636084f785e279b10c449a6eace70c64b73d2a96 Bisecting: 51 revisions left to test after this (roughly 6 steps) [a2c245823691b52008b32953099fdf86f6c9a7cf] usb: musb: Add and use inline functions musb_{get,set}_state determine whether the revision contains the guilty commit revision 84eca597baa346f09b30accdaeca10ced3eeba2d crashed and is reachable testing commit a2c245823691b52008b32953099fdf86f6c9a7cf gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 53a251101a80da1eedcaf1afc805219a69e69139ec171bef177e9b595c8c5a3d all runs: OK false negative chance: 0.000 # git bisect bad a2c245823691b52008b32953099fdf86f6c9a7cf Bisecting: 25 revisions left to test after this (roughly 5 steps) [0a4eec84d4d2c4085d4ed8630fd74e4b39033c1b] smb: client: fix use-after-free in cifs_oplock_break determine whether the revision contains the guilty commit revision 3baad7b9308e09a7bad64159f5863a70643cca11 crashed and is reachable testing commit 0a4eec84d4d2c4085d4ed8630fd74e4b39033c1b gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 816761e9119933603788647b618a564bee9488cc62bf1ed4cb9bcd565d3cca6d all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in mcp_i2c_xfer representative crash: BUG: unable to handle kernel NULL pointer dereference in mcp_i2c_xfer, types: [NULL-POINTER-DEREFERENCE] # git bisect good 0a4eec84d4d2c4085d4ed8630fd74e4b39033c1b Bisecting: 12 revisions left to test after this (roughly 4 steps) [4a28b398ade10c6e24729408cc5166615c75e538] Bluetooth: L2CAP: Fix attempting to adjust outgoing MTU determine whether the revision contains the guilty commit revision 0a4eec84d4d2c4085d4ed8630fd74e4b39033c1b crashed and is reachable testing commit 4a28b398ade10c6e24729408cc5166615c75e538 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 73a55356a29602f1d85d3630c403c1f5499b14ef30bb0d1bc613c6155472b683 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in mcp_i2c_xfer representative crash: BUG: unable to handle kernel NULL pointer dereference in mcp_i2c_xfer, types: [NULL-POINTER-DEREFERENCE] # git bisect good 4a28b398ade10c6e24729408cc5166615c75e538 Bisecting: 6 revisions left to test after this (roughly 3 steps) [7c2a7b776d63d0aa67fc6f885cf6f35dd795b0c5] sched: Change nr_uninterruptible type to unsigned long determine whether the revision contains the guilty commit revision 4a28b398ade10c6e24729408cc5166615c75e538 crashed and is reachable testing commit 7c2a7b776d63d0aa67fc6f885cf6f35dd795b0c5 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 6ede116bcfe8bd11db76b435c1b7124a32fea4e6394390b1c6709b4d59fee289 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in mcp_i2c_xfer representative crash: BUG: unable to handle kernel NULL pointer dereference in mcp_i2c_xfer, types: [NULL-POINTER-DEREFERENCE] # git bisect good 7c2a7b776d63d0aa67fc6f885cf6f35dd795b0c5 Bisecting: 3 revisions left to test after this (roughly 2 steps) [43e53eb8433c332666a222bff8e49aa03a470d0d] usb: hub: fix detection of high tier USB3 devices behind suspended hubs determine whether the revision contains the guilty commit revision 84eca597baa346f09b30accdaeca10ced3eeba2d crashed and is reachable testing commit 43e53eb8433c332666a222bff8e49aa03a470d0d gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: effa16cbf1ec0fce372916ecc66c05c6fac78de8b150024fda6a096a46226b1f all runs: OK false negative chance: 0.000 # git bisect bad 43e53eb8433c332666a222bff8e49aa03a470d0d Bisecting: 0 revisions left to test after this (roughly 1 step) [d717325b5ecf2a40daca85c61923e17f32306179] clone_private_mnt(): make sure that caller has CAP_SYS_ADMIN in the right userns determine whether the revision contains the guilty commit revision 0a4eec84d4d2c4085d4ed8630fd74e4b39033c1b crashed and is reachable testing commit d717325b5ecf2a40daca85c61923e17f32306179 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 8718c78b7cf4323c0b38e058432d4698e885a3067b43fffeb6195fe830212d93 all runs: OK false negative chance: 0.000 # git bisect bad d717325b5ecf2a40daca85c61923e17f32306179 Bisecting: 0 revisions left to test after this (roughly 0 steps) [0499d5d579d4e552f5c67d74e56b150de31369d5] HID: mcp2221: Set driver data before I2C adapter add determine whether the revision contains the guilty commit revision 0a4eec84d4d2c4085d4ed8630fd74e4b39033c1b crashed and is reachable testing commit 0499d5d579d4e552f5c67d74e56b150de31369d5 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: dbd591de3ffcead9d44f1d17a6fcb885b727bfcde01f012d1985ea1fc0ba2b1b all runs: OK false negative chance: 0.000 # git bisect bad 0499d5d579d4e552f5c67d74e56b150de31369d5 0499d5d579d4e552f5c67d74e56b150de31369d5 is the first bad commit commit 0499d5d579d4e552f5c67d74e56b150de31369d5 Author: Hamish Martin Date: Wed Oct 25 16:55:10 2023 +1300 HID: mcp2221: Set driver data before I2C adapter add commit f2d4a5834638bbc967371b9168c0b481519f7c5e upstream. The process of adding an I2C adapter can invoke I2C accesses on that new adapter (see i2c_detect()). Ensure we have set the adapter's driver data to avoid null pointer dereferences in the xfer functions during the adapter add. This has been noted in the past and the same fix proposed but not completed. See: https://lore.kernel.org/lkml/ef597e73-ed71-168e-52af-0d19b03734ac@vigem.de/ Signed-off-by: Hamish Martin Signed-off-by: Jiri Kosina Signed-off-by: Sumanth Gavini Signed-off-by: Greg Kroah-Hartman drivers/hid/hid-mcp2221.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) accumulated error probability: 0.00 culprit signature: dbd591de3ffcead9d44f1d17a6fcb885b727bfcde01f012d1985ea1fc0ba2b1b parent signature: 6ede116bcfe8bd11db76b435c1b7124a32fea4e6394390b1c6709b4d59fee289 revisions tested: 19, total time: 7h7m49.557107802s (build: 2h42m9.149519522s, test: 3h55m1.285200087s) first good commit: 0499d5d579d4e552f5c67d74e56b150de31369d5 HID: mcp2221: Set driver data before I2C adapter add recipients (to): ["gregkh@linuxfoundation.org" "hamish.martin@alliedtelesis.co.nz" "jkosina@suse.cz" "sumanth.gavini@yahoo.com"] recipients (cc): []