ci2 starts bisection 2026-11-05 06:26:38.177617731 +0000 UTC m=+115.991423572 bisecting fixing commit since 6436c12a2ced865a3382b867e3882d08c2d2bf8d building syzkaller on 5d63f80b763910b40ae04a96c13dc75d621bea67 ensuring issue is reproducible on original commit 6436c12a2ced865a3382b867e3882d08c2d2bf8d testing commit 6436c12a2ced865a3382b867e3882d08c2d2bf8d gcc compiler: Debian clang version 22.1.8 (1~deb13u4), Debian LLD 22.1.8 kernel signature: 74c72b9ea6781cb8a38eac6d90a60bada3d3a81dc1f07df8be1278775d89d3f9 all runs: crashed: general protection fault in i915_pci_probe representative crash: general protection fault in i915_pci_probe, types: [DoS] check whether we can drop unnecessary instrumentation disabling configs for [hang memleak ubsan bug_or_warning kasan locking atomic_sleep], they are not needed testing commit 6436c12a2ced865a3382b867e3882d08c2d2bf8d gcc compiler: Debian clang version 22.1.8 (1~deb13u4), Debian LLD 22.1.8 kernel signature: eefefa6fa92c59e6dab6c7a15d2e6a5b07c194ae606ff5d17d597602056bd836 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in i915_pci_probe representative crash: BUG: unable to handle kernel NULL pointer dereference in i915_pci_probe, types: [NULL-POINTER-DEREFERENCE] the bug reproduces without the instrumentation disabling configs for [hang memleak ubsan bug_or_warning kasan locking atomic_sleep], they are not needed kconfig minimization: base=3916 full=7804 leaves diff=2160 split chunks (needed=false): <2160> split chunk #0 of len 2160 into 5 parts testing without sub-chunk 1/5 disabling configs for [bug_or_warning kasan locking atomic_sleep hang memleak ubsan], they are not needed testing commit 6436c12a2ced865a3382b867e3882d08c2d2bf8d gcc compiler: Debian clang version 22.1.8 (1~deb13u4), Debian LLD 22.1.8 kernel signature: 90d3f5eba8a4131c495c2e7682d860e0f1b0e47fa8aa81b947d1021478121c1a all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in i915_pci_probe representative crash: BUG: unable to handle kernel NULL pointer dereference in i915_pci_probe, 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 6436c12a2ced865a3382b867e3882d08c2d2bf8d gcc compiler: Debian clang version 22.1.8 (1~deb13u4), Debian LLD 22.1.8 kernel signature: 37623887fe2b1dff11ffd78852e6f1c1132eb3c14f7d928997ae0ee3574ca7da all runs: OK false negative chance: 0.000 testing without sub-chunk 3/5 disabling configs for [bug_or_warning kasan locking atomic_sleep hang memleak ubsan], they are not needed testing commit 6436c12a2ced865a3382b867e3882d08c2d2bf8d gcc compiler: Debian clang version 22.1.8 (1~deb13u4), Debian LLD 22.1.8 kernel signature: 576482668e2288b29a86f5857fb2bf8ff88eab8cf8e2092e29f928377cbd5dd7 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in i915_pci_probe representative crash: BUG: unable to handle kernel NULL pointer dereference in i915_pci_probe, types: [NULL-POINTER-DEREFERENCE] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [bug_or_warning kasan locking atomic_sleep hang memleak ubsan], they are not needed testing commit 6436c12a2ced865a3382b867e3882d08c2d2bf8d gcc compiler: Debian clang version 22.1.8 (1~deb13u4), Debian LLD 22.1.8 kernel signature: c904e90b7ddd877c02eeb9752102935e5df9ae9939f0c0bd9dfb266cb59def19 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in i915_pci_probe representative crash: BUG: unable to handle kernel NULL pointer dereference in i915_pci_probe, types: [NULL-POINTER-DEREFERENCE] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [kasan locking atomic_sleep hang memleak ubsan bug_or_warning], they are not needed testing commit 6436c12a2ced865a3382b867e3882d08c2d2bf8d gcc compiler: Debian clang version 22.1.8 (1~deb13u4), Debian LLD 22.1.8 kernel signature: 24744cb6738df0d885ff4bb9ed8f514ab3e747e81fe2dc5dc5897316d9333942 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in i915_pci_probe representative crash: BUG: unable to handle kernel NULL pointer dereference in i915_pci_probe, types: [NULL-POINTER-DEREFERENCE] the chunk can be dropped minimized to 432 configs; suspects: [6LOWPAN ARCH_ENABLE_MEMORY_HOTREMOVE ASUS_WMI BLK_DEV_ZONED CHARGER_BQ24190 CMA COMMON_CLK DAX DIMLIB DLM DLN2_ADC DMABUF_HEAPS DMABUF_HEAPS_CMA DMABUF_HEAPS_SYSTEM DMABUF_MOVE_NOTIFY DMA_CMA DMA_ENGINE_RAID DM_AUDIT DM_BIO_PRISON DM_BUFIO DM_CACHE DM_CACHE_SMQ DM_CLONE DM_CRYPT DM_FLAKEY DM_INTEGRITY DM_MULTIPATH DM_MULTIPATH_QL DM_MULTIPATH_ST DM_PERSISTENT_DATA DM_RAID DM_SNAPSHOT DM_THIN_PROVISIONING DM_UEVENT DM_VERITY DM_VERITY_FEC DM_WRITECACHE DM_ZONED DRAGONRISE_FF DRM DRM_BOCHS DRM_BRIDGE DRM_BUDDY DRM_CIRRUS_QEMU DRM_DEBUG_MM DRM_DISPLAY_DP_HELPER DRM_DISPLAY_HDCP_HELPER DRM_DISPLAY_HDMI_HELPER DRM_DISPLAY_HELPER DRM_DP_AUX_BUS DRM_DP_AUX_CHARDEV DRM_FBDEV_EMULATION DRM_GEM_SHMEM_HELPER DRM_GM12U320 DRM_GUD DRM_I915 DRM_I915_CAPTURE_ERROR DRM_I915_COMPRESS_ERROR DRM_I915_USERPTR DRM_KMS_HELPER DRM_MIPI_DSI DRM_PANEL DRM_PANEL_BRIDGE DRM_PANEL_EDP DRM_PANEL_ORIENTATION_QUIRKS DRM_SIMPLEDRM DRM_TTM DRM_TTM_HELPER DRM_UDL DRM_VGEM DRM_VIRTIO_GPU DRM_VIRTIO_GPU_KMS 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_CORE FB_DEFERRED_IO FB_DEVICE FB_IOMEM_FOPS FB_IOMEM_HELPERS FB_NOTIFY FB_SYSMEM_HELPERS FB_SYSMEM_HELPERS_DEFERRED 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 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 HAS_LTO_CLANG 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_DRAGONRISE HID_ELAN HID_ELECOM HID_ELO HID_EMS_FF HID_EVISION HID_FT260 HID_GEMBIRD HID_GFRM HID_GLORIOUS HID_GOOGLE_STADIA_FF 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_MCP2200 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_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_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_HID_ACPI I2C_HID_CORE I2C_HID_OF 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 IEEE802154_SOCKET IFB IIO IIO_BUFFER IIO_KFIFO_BUF IIO_TRIGGER IIO_TRIGGERED_BUFFER IKCONFIG IKCONFIG_PROC IMA IMA_APPRAISE IMA_APPRAISE_MODSIG IMA_DEFAULT_HASH_SHA256 IMA_LSM_RULES IMA_MEASURE_ASYMMETRIC_KEYS IMA_NG_TEMPLATE IMA_QUEUE_EARLY_BOOT_KEYS IMA_READ_POLICY IMA_WRITE_POLICY INET6_ESPINTCP INET6_ESP_OFFLOAD INET6_IPCOMP INET6_TUNNEL INET6_XFRM_TUNNEL INET_AH INET_DCCP_DIAG INET_DIAG INET_DIAG_DESTROY INET_ESP INET_ESPINTCP INET_ESP_OFFLOAD INET_IPCOMP INET_MPTCP_DIAG INET_RAW_DIAG INET_SCTP_DIAG INET_TCP_DIAG INET_UDP_DIAG INET_XFRM_TUNNEL INFINIBAND INFINIBAND_ADDR_TRANS INFINIBAND_ADDR_TRANS_CONFIGFS INFINIBAND_IPOIB INFINIBAND_IPOIB_CM INFINIBAND_IPOIB_DEBUG INFINIBAND_ISER INFINIBAND_ON_DEMAND_PAGING INFINIBAND_RTRS INFINIBAND_SRP INFINIBAND_USER_ACCESS INFINIBAND_USER_MAD INFINIBAND_USER_MEM INPUT_ATI_REMOTE2 INPUT_CM109 INPUT_IMS_PCU INPUT_JOYDEV INPUT_KEYSPAN_REMOTE INPUT_LEDS INPUT_MOUSEDEV INPUT_MOUSEDEV_PSAUX INPUT_POWERMATE INPUT_UINPUT INPUT_YEALINK INTEGRITY INTEGRITY_ASYMMETRIC_KEYS INTEGRITY_AUDIT INTEGRITY_SIGNATURE INTEGRITY_TRUSTED_KEYRING INTEL_CHTWC_INT33FE INTEL_IDMA64 INTEL_IOATDMA INTEL_IOMMU_DEFAULT_ON INTEL_IOMMU_SVM INTEL_ISHTP_ECLITE INTEL_ISH_FIRMWARE_DOWNLOADER INTEL_ISH_HID INTEL_SOC_PMIC_CHTWC INTERVAL_TREE INTERVAL_TREE_SPAN_ITER IOMMUFD IOMMUFD_TEST IOMMU_SVA IP6_NF_MATCH_AH IP6_NF_MATCH_EUI64 IP6_NF_MATCH_FRAG IP6_NF_MATCH_HL IP6_NF_MATCH_MH IP6_NF_MATCH_OPTS IP6_NF_MATCH_RPFILTER IP6_NF_MATCH_RT IP6_NF_MATCH_SRH IP6_NF_NAT IP6_NF_RAW IP6_NF_SECURITY IP6_NF_TARGET_HL IP6_NF_TARGET_MASQUERADE IP6_NF_TARGET_NPT IP6_NF_TARGET_SYNPROXY IPV6_FOU IPV6_FOU_TUNNEL IPV6_GRE IPV6_ILA IPV6_MIP6 IPV6_MROUTE IPV6_MROUTE_MULTIPLE_TABLES IPV6_MULTIPLE_TABLES IPV6_OPTIMISTIC_DAD IPV6_PIMSM_V2 IPV6_ROUTER_PREF IPV6_ROUTE_INFO IPV6_RPL_LWTUNNEL IPV6_SEG6_BPF IPV6_SEG6_HMAC IPV6_SEG6_LWTUNNEL IPV6_SIT_6RD IPV6_SUBTREES IPV6_TUNNEL IPV6_VTI IPVLAN IPVLAN_L3S IPVTAP IP_DCCP IP_DCCP_CCID3 IP_DCCP_TFRC_LIB IP_FIB_TRIE_STATS IP_MROUTE_MULTIPLE_TABLES IP_NF_ARPFILTER IP_NF_ARPTABLES IP_NF_ARP_MANGLE IP_NF_MATCH_AH IP_SCTP IRQ_TIME_ACCOUNTING LAPB LCD_CLASS_DEVICE MAC802154 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 NETFILTER_ADVANCED NET_ACT_GACT NET_ACT_MIRRED NET_IPGRE_DEMUX NFT_FWD_NETDEV NF_TABLES NF_TABLES_NETDEV RADIO_ADAPTERS RADIO_SI4713 RAS RC_CORE REGULATOR RFKILL SND SOUND STAGING TRANSPARENT_HUGEPAGE TRUSTED_KEYS TYPEC TYPEC_MUX_PI3USB30532 USB_ROLES_INTEL_XHCI USB_ROLE_SWITCH VIDEO_DEV VIRTIO_FS WAN ZONE_DEVICE] disabling configs for [atomic_sleep hang memleak ubsan bug_or_warning kasan locking], they are not needed testing current HEAD b5a1dc3ad4822c6edfb53429e9a3759c9b0ac2be testing commit b5a1dc3ad4822c6edfb53429e9a3759c9b0ac2be gcc compiler: Debian clang version 22.1.8 (1~deb13u4), Debian LLD 22.1.8 kernel signature: 75244b0971478bc5bfffaf4e23bc1ced0a7234d86b8f7b9deb5ac96903850d48 all runs: OK false negative chance: 0.000 # git bisect start b5a1dc3ad4822c6edfb53429e9a3759c9b0ac2be 6436c12a2ced865a3382b867e3882d08c2d2bf8d Bisecting: 2583 revisions left to test after this (roughly 11 steps) [593e64f64a20b25e4042c3ee863119eb7f991785] Bluetooth: hci_core: Fix race condition during device registration determine whether the revision contains the guilty commit revision 6436c12a2ced865a3382b867e3882d08c2d2bf8d crashed and is reachable testing commit 593e64f64a20b25e4042c3ee863119eb7f991785 gcc compiler: Debian clang version 22.1.8 (1~deb13u4), Debian LLD 22.1.8 kernel signature: 292e427605503aa9de0f2c756226278f07de3260834b4944bdcf61bff2025bd8 all runs: OK false negative chance: 0.000 # git bisect bad 593e64f64a20b25e4042c3ee863119eb7f991785 Bisecting: 1290 revisions left to test after this (roughly 10 steps) [0afd48b173bebd6d94769ba2c91bd7404b9eb3c9] net/niu: Niu requires MSIX ENTRY_DATA fields touch before entry reads determine whether the revision contains the guilty commit revision 6436c12a2ced865a3382b867e3882d08c2d2bf8d crashed and is reachable testing commit 0afd48b173bebd6d94769ba2c91bd7404b9eb3c9 gcc compiler: Debian clang version 22.1.8 (1~deb13u4), Debian LLD 22.1.8 kernel signature: e4e1ac10ddae4f77a7cfbe237deffcbeb9301ed4121b4f838c0e6c132075258f all runs: OK false negative chance: 0.000 # git bisect bad 0afd48b173bebd6d94769ba2c91bd7404b9eb3c9 Bisecting: 644 revisions left to test after this (roughly 9 steps) [bd397c4123a4bc084913d8c7fdb40ef94e9f8172] HID: nintendo: fix out-of-bounds read in joycon_ctlr_read_handler() determine whether the revision contains the guilty commit revision 6436c12a2ced865a3382b867e3882d08c2d2bf8d crashed and is reachable testing commit bd397c4123a4bc084913d8c7fdb40ef94e9f8172 gcc compiler: Debian clang version 22.1.8 (1~deb13u4), Debian LLD 22.1.8 kernel signature: 30eb9f146080d3b54e49e09e1f4c25085fa32dbf303318475f23ac6436c15d91 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in i915_pci_probe representative crash: BUG: unable to handle kernel NULL pointer dereference in i915_pci_probe, types: [NULL-POINTER-DEREFERENCE] # git bisect good bd397c4123a4bc084913d8c7fdb40ef94e9f8172 Bisecting: 322 revisions left to test after this (roughly 8 steps) [f735b9710f0c8fe72c1060103e865f4ae678190b] s390/dasd: Propagate partial completion length across ERP recovery determine whether the revision contains the guilty commit revision bd397c4123a4bc084913d8c7fdb40ef94e9f8172 crashed and is reachable testing commit f735b9710f0c8fe72c1060103e865f4ae678190b gcc compiler: Debian clang version 22.1.8 (1~deb13u4), Debian LLD 22.1.8 kernel signature: 935812add03428df6cd75d1c0f1fadbd8227e9596788c501343707a80448a956 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in i915_pci_probe representative crash: BUG: unable to handle kernel NULL pointer dereference in i915_pci_probe, types: [NULL-POINTER-DEREFERENCE] # git bisect good f735b9710f0c8fe72c1060103e865f4ae678190b Bisecting: 161 revisions left to test after this (roughly 7 steps) [114b6ce2cf864e3063db376fa7ca1183311870b6] powerpc/crash: stop watchdogs before booting kdump kernel determine whether the revision contains the guilty commit revision bd397c4123a4bc084913d8c7fdb40ef94e9f8172 crashed and is reachable testing commit 114b6ce2cf864e3063db376fa7ca1183311870b6 gcc compiler: Debian clang version 22.1.8 (1~deb13u4), Debian LLD 22.1.8 kernel signature: 06d40e53ac5301d90493d9e01bc5855f4cb878c7f9723f4299adabe2ca0803ab all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in i915_pci_probe representative crash: BUG: unable to handle kernel NULL pointer dereference in i915_pci_probe, types: [NULL-POINTER-DEREFERENCE] # git bisect good 114b6ce2cf864e3063db376fa7ca1183311870b6 Bisecting: 80 revisions left to test after this (roughly 6 steps) [593b1172e5d548581dfdb9a63713088f5dfab255] media: tda18250: fix possible integer overflow determine whether the revision contains the guilty commit revision bd397c4123a4bc084913d8c7fdb40ef94e9f8172 crashed and is reachable testing commit 593b1172e5d548581dfdb9a63713088f5dfab255 gcc compiler: Debian clang version 22.1.8 (1~deb13u4), Debian LLD 22.1.8 kernel signature: 7d6d133b126a43d3f3c06109e8c83c347dca8ff9e6284b4c232e41635d2f982c all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in i915_pci_probe representative crash: BUG: unable to handle kernel NULL pointer dereference in i915_pci_probe, types: [NULL-POINTER-DEREFERENCE] # git bisect good 593b1172e5d548581dfdb9a63713088f5dfab255 Bisecting: 40 revisions left to test after this (roughly 5 steps) [694565c0c14c9968331fd24c6cb47ff4799a0d0e] f2fs: return writeback error from collapse range determine whether the revision contains the guilty commit revision f735b9710f0c8fe72c1060103e865f4ae678190b crashed and is reachable testing commit 694565c0c14c9968331fd24c6cb47ff4799a0d0e gcc compiler: Debian clang version 22.1.8 (1~deb13u4), Debian LLD 22.1.8 kernel signature: 91c50b6a5b34f1a12de6e7420876d02f6e0849b4c5db9f137fd5a49b7d852326 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in i915_pci_probe representative crash: BUG: unable to handle kernel NULL pointer dereference in i915_pci_probe, types: [NULL-POINTER-DEREFERENCE] # git bisect good 694565c0c14c9968331fd24c6cb47ff4799a0d0e Bisecting: 20 revisions left to test after this (roughly 4 steps) [0f47c47b457384bc9fca10800508c0f054b3a15f] drm/amdkfd: Reject zero-sized AQL queue allocations after size halving determine whether the revision contains the guilty commit revision 6436c12a2ced865a3382b867e3882d08c2d2bf8d crashed and is reachable testing commit 0f47c47b457384bc9fca10800508c0f054b3a15f gcc compiler: Debian clang version 22.1.8 (1~deb13u4), Debian LLD 22.1.8 kernel signature: bcdcbad064e12801d67e0349a1ae7a059daca44028f1c6238611d9fb8fdd124f all runs: OK false negative chance: 0.000 # git bisect bad 0f47c47b457384bc9fca10800508c0f054b3a15f Bisecting: 9 revisions left to test after this (roughly 3 steps) [6fa33b32783e9a8f4ce558233ed1bf7413228a7b] drm/hibmc: Use drm_atomic_helper_check_plane_state() determine whether the revision contains the guilty commit revision 6436c12a2ced865a3382b867e3882d08c2d2bf8d crashed and is reachable testing commit 6fa33b32783e9a8f4ce558233ed1bf7413228a7b gcc compiler: Debian clang version 22.1.8 (1~deb13u4), Debian LLD 22.1.8 kernel signature: c3fb83385ef5a7f6197806dbc1b069f516758cab9175117111091b7141f3ac37 all runs: OK false negative chance: 0.000 # git bisect bad 6fa33b32783e9a8f4ce558233ed1bf7413228a7b Bisecting: 4 revisions left to test after this (roughly 2 steps) [8d9e6dffaea9b1282f8dc82f2d5e3cbd64e11fb3] drm/panel-edp: fix i2c adapter leak on probe failure determine whether the revision contains the guilty commit revision 6436c12a2ced865a3382b867e3882d08c2d2bf8d crashed and is reachable testing commit 8d9e6dffaea9b1282f8dc82f2d5e3cbd64e11fb3 gcc compiler: Debian clang version 22.1.8 (1~deb13u4), Debian LLD 22.1.8 kernel signature: e20ed8ba5b3db665dc1d99577351708afdfc787e41533bf19a2a4f3765af80f2 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in i915_pci_probe representative crash: BUG: unable to handle kernel NULL pointer dereference in i915_pci_probe, types: [NULL-POINTER-DEREFERENCE] # git bisect good 8d9e6dffaea9b1282f8dc82f2d5e3cbd64e11fb3 Bisecting: 2 revisions left to test after this (roughly 1 step) [4a0236fe97732e31cb4a6dcb433642f9e3ef9a56] drm/i915: Guard against NULL driver_data in i915_pci_probe() determine whether the revision contains the guilty commit revision bd397c4123a4bc084913d8c7fdb40ef94e9f8172 crashed and is reachable testing commit 4a0236fe97732e31cb4a6dcb433642f9e3ef9a56 gcc compiler: Debian clang version 22.1.8 (1~deb13u4), Debian LLD 22.1.8 kernel signature: eaff40ebe0458018b4cb18a1561207941257826d1860ee2ab309a747f35eaa05 all runs: OK false negative chance: 0.000 # git bisect bad 4a0236fe97732e31cb4a6dcb433642f9e3ef9a56 Bisecting: 0 revisions left to test after this (roughly 0 steps) [a0a7e2e177f2f18b9e7318a4c64ac44efd9ef22c] drm: fix race between partial drm_dev_register() failure and ioctl determine whether the revision contains the guilty commit revision bd397c4123a4bc084913d8c7fdb40ef94e9f8172 crashed and is reachable testing commit a0a7e2e177f2f18b9e7318a4c64ac44efd9ef22c gcc compiler: Debian clang version 22.1.8 (1~deb13u4), Debian LLD 22.1.8 kernel signature: 36a2e8416c85a856b44980132866b6f968cd706906298bdae7d06d21e1a5f34a all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in i915_pci_probe representative crash: BUG: unable to handle kernel NULL pointer dereference in i915_pci_probe, types: [NULL-POINTER-DEREFERENCE] # git bisect good a0a7e2e177f2f18b9e7318a4c64ac44efd9ef22c 4a0236fe97732e31cb4a6dcb433642f9e3ef9a56 is the first bad commit commit 4a0236fe97732e31cb4a6dcb433642f9e3ef9a56 Author: Deepanshu Kartikey Date: Thu Aug 13 12:19:02 2026 +0530 drm/i915: Guard against NULL driver_data in i915_pci_probe() commit 3785d40831ba5601296283e0197e10e089392757 upstream. pci_match_device() can return the dummy pci_device_id_any entry when a device is force-bound via sysfs driver_override, in which case ->driver_data is unset (NULL). i915_pci_probe() casts it to struct intel_device_info * unconditionally and dereferences intel_info->require_force_probe, causing a NULL-ptr-deref. Reported-by: syzbot+db96c5ff032f4292a8dc@syzkaller.appspotmail.com Closes: https://syzkaller.appspot.com/bug?extid=db96c5ff032f4292a8dc Tested-by: syzbot+db96c5ff032f4292a8dc@syzkaller.appspotmail.com Cc: stable@vger.kernel.org Signed-off-by: Deepanshu Kartikey Link: https://patch.msgid.link/20260813064902.367504-1-kartikey406@gmail.com Signed-off-by: Jani Nikula (cherry picked from commit 2727922084672cc274ecea726ea00363c2893731) Signed-off-by: Jani Nikula Signed-off-by: Greg Kroah-Hartman drivers/gpu/drm/i915/i915_pci.c | 3 +++ 1 file changed, 3 insertions(+) accumulated error probability: 0.00 culprit signature: eaff40ebe0458018b4cb18a1561207941257826d1860ee2ab309a747f35eaa05 parent signature: 36a2e8416c85a856b44980132866b6f968cd706906298bdae7d06d21e1a5f34a revisions tested: 20, total time: 6h44m33.353591472s (build: 1h42m11.253207157s, test: 3h10m17.716268684s) first good commit: 4a0236fe97732e31cb4a6dcb433642f9e3ef9a56 drm/i915: Guard against NULL driver_data in i915_pci_probe() recipients (to): ["gregkh@linuxfoundation.org" "jani.nikula@intel.com" "kartikey406@gmail.com" "syzbot+db96c5ff032f4292a8dc@syzkaller.appspotmail.com"] recipients (cc): []