ci starts bisection 2024-11-26 14:32:26.352780827 +0000 UTC m=+24555.406002603 bisecting cause commit starting from 7eef7e306d3c40a0c5b9ff6adc9b273cc894dbd5 building syzkaller on 11dbc2540722df00e9c113b3e27c5ea707844273 ensuring issue is reproducible on original commit 7eef7e306d3c40a0c5b9ff6adc9b273cc894dbd5 testing commit 7eef7e306d3c40a0c5b9ff6adc9b273cc894dbd5 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 47c0e5ee2a534ab8548a6f8fcb9850348c0129386d41a691d4d380663a2f59d7 all runs: crashed: general protection fault in modify_prefix_route representative crash: general protection fault in modify_prefix_route, types: [UNKNOWN] check whether we can drop unnecessary instrumentation disabling configs for [HANG LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit 7eef7e306d3c40a0c5b9ff6adc9b273cc894dbd5 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 5c0cfedd55b552228cef33aa0ef88befcfe86fdb404daaa0dab7c77e38c0501d all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in modify_prefix_route representative crash: BUG: unable to handle kernel NULL pointer dereference in modify_prefix_route, types: [UNKNOWN] the bug reproduces without the instrumentation disabling configs for [BUG KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed kconfig minimization: base=4046 full=8233 leaves diff=2122 split chunks (needed=false): <2122> split chunk #0 of len 2122 into 5 parts testing without sub-chunk 1/5 disabling configs for [BUG KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed testing commit 7eef7e306d3c40a0c5b9ff6adc9b273cc894dbd5 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 5b7be6ab7f8d5eab8d34050b066b7a1e7bb3a44faacf3a56640d6dcdc8d6baf6 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in modify_prefix_route representative crash: BUG: unable to handle kernel NULL pointer dereference in modify_prefix_route, types: [UNKNOWN] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP HANG], they are not needed testing commit 7eef7e306d3c40a0c5b9ff6adc9b273cc894dbd5 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 failed building 7eef7e306d3c40a0c5b9ff6adc9b273cc894dbd5: drivers/gpu/drm/bridge/aux-bridge.c:116: undefined reference to `devm_drm_of_get_bridge' testing without sub-chunk 3/5 disabling configs for [BUG KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed testing commit 7eef7e306d3c40a0c5b9ff6adc9b273cc894dbd5 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 0df9e6354bdf1cb4d3393bfbcd5e996ef6e9dbcc74f3d491384832a51d9afe55 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in modify_prefix_route representative crash: BUG: unable to handle kernel NULL pointer dereference in modify_prefix_route, types: [UNKNOWN] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed testing commit 7eef7e306d3c40a0c5b9ff6adc9b273cc894dbd5 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 8e5681d3f677ed118539261e2e6b1e554a46a959b98c379a180872b7eff32199 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in modify_prefix_route representative crash: BUG: unable to handle kernel NULL pointer dereference in modify_prefix_route, types: [UNKNOWN] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [HANG LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit 7eef7e306d3c40a0c5b9ff6adc9b273cc894dbd5 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c2671a8d6b478a40ea5de35c171766c933bb49b40fd32585897b62d359985cb2 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in modify_prefix_route representative crash: BUG: unable to handle kernel NULL pointer dereference in modify_prefix_route, types: [UNKNOWN] the chunk can be dropped minimized to 425 configs; suspects: [6LOWPAN ARCH_ENABLE_MEMORY_HOTREMOVE ASUS_WMI CHARGER_BQ24190 CMA COMMON_CLK DAX DLM DRM DRM_BRIDGE 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 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_BACKED_BY_FILE 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_FOPS FB_SYSMEM_HELPERS FB_SYSMEM_HELPERS_DEFERRED FB_SYS_COPYAREA FB_SYS_FILLRECT 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_STACK 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_LJCA GPIO_VIPERBOARD GREENASIA_FF GREYBUS GREYBUS_BRIDGED_PHY GREYBUS_ES2 GREYBUS_HID GREYBUS_USB GROUP_SCHED_WEIGHT GTP GUEST_PERF_EVENTS GVE 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_IRQCHIP HAVE_KVM_IRQ_BYPASS HAVE_KVM_IRQ_ROUTING HAVE_KVM_MSI HAVE_KVM_NO_POLL HAVE_KVM_PFNCACHE HAVE_KVM_PM_NOTIFIER HAVE_KVM_READONLY_MEM 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_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_LJCA 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_SPAN_ITER IOMMUFD IOMMUFD_DRIVER IOMMUFD_DRIVER_CORE IOMMUFD_TEST 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_NF_MATCH_ECN IP_NF_MATCH_RPFILTER IP_NF_MATCH_TTL IP_NF_RAW IP_NF_SECURITY 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_PROTO_TCP 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_COMPAT NFT_COMPAT_ARP NFT_FWD_NETDEV NF_TABLES NF_TABLES_ARP NF_TABLES_NETDEV RADIO_ADAPTERS RADIO_SI4713 RAS RC_CORE REGULATOR RFKILL SND SOUND STAGING TRANSPARENT_HUGEPAGE TYPEC TYPEC_MUX_PI3USB30532 USB_LJCA USB_ROLES_INTEL_XHCI USB_ROLE_SWITCH VIDEO_DEV VIRTIO_FS WAN ZONE_DEVICE] disabling configs for [BUG KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed picked [v6.12 v6.11 v6.10 v6.8 v6.6 v6.4 v6.2 v6.0 v5.17 v5.14 v5.11 v5.8 v5.5 v5.2 v4.20 v4.19] out of 35 release tags testing release v6.12 testing commit adc218676eef25575469234709c2d87185ca223a gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b42a96a105e9d134f4c1d58f1d2465418ea69630fec6ce0d0913401394e56580 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in modify_prefix_route representative crash: BUG: unable to handle kernel NULL pointer dereference in modify_prefix_route, types: [UNKNOWN] testing release v6.11 testing commit 98f7e32f20d28ec452afb208f9cffc08448a2652 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 344a412fb6b15e7b49e84fa394d0ab4b557b6b9152baf7237ce1c9a5fab9c5ee all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in modify_prefix_route representative crash: BUG: unable to handle kernel NULL pointer dereference in modify_prefix_route, types: [UNKNOWN] testing release v6.10 testing commit 0c3836482481200ead7b416ca80c68a29cfdaabd gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 16a48309a5e932a500063a53d567fb351c32b80a17eaca9cf23f6ebe59b2215f all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in modify_prefix_route representative crash: BUG: unable to handle kernel NULL pointer dereference in modify_prefix_route, types: [UNKNOWN] testing release v6.8 testing commit e8f897f4afef0031fe618a8e94127a0934896aba gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 17cbc2aa20dbca61168245a45d4f4f895878c7f08f266cef069eea2526e6cf26 all runs: OK false negative chance: 0.000 # git bisect start 0c3836482481200ead7b416ca80c68a29cfdaabd e8f897f4afef0031fe618a8e94127a0934896aba Bisecting: 15131 revisions left to test after this (roughly 14 steps) [63407d3081a6b406d94bd7d96ff2ca38fa7df236] Merge tag 'phy-fixes-6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/phy/linux-phy testing commit 63407d3081a6b406d94bd7d96ff2ca38fa7df236 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b52e7ee44bd7e040f2b99984e4add68f9e10929e906f534060dc334e461724ae all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in modify_prefix_route representative crash: BUG: unable to handle kernel NULL pointer dereference in modify_prefix_route, types: [UNKNOWN] # git bisect bad 63407d3081a6b406d94bd7d96ff2ca38fa7df236 Bisecting: 7033 revisions left to test after this (roughly 13 steps) [480e035fc4c714fb5536e64ab9db04fedc89e910] Merge tag 'drm-next-2024-03-13' of https://gitlab.freedesktop.org/drm/kernel testing commit 480e035fc4c714fb5536e64ab9db04fedc89e910 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d4d6ddfd78d9f71e43db5f82b00a4f45eb1579e862ecc5386b0090a24fca81af all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in modify_prefix_route representative crash: BUG: unable to handle kernel NULL pointer dereference in modify_prefix_route, types: [UNKNOWN] # git bisect bad 480e035fc4c714fb5536e64ab9db04fedc89e910 Bisecting: 2870 revisions left to test after this (roughly 12 steps) [9187210eee7d87eea37b45ea93454a88681894a4] Merge tag 'net-next-6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next testing commit 9187210eee7d87eea37b45ea93454a88681894a4 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 5d6db7859b66eefcdfca4bc4897fa864f291c7301004aaf0f4b0514ae060c801 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in modify_prefix_route representative crash: BUG: unable to handle kernel NULL pointer dereference in modify_prefix_route, types: [UNKNOWN] # git bisect bad 9187210eee7d87eea37b45ea93454a88681894a4 Bisecting: 2600 revisions left to test after this (roughly 11 steps) [a01c9fe32378636ae65bec8047b5de3fdb2ba5c8] Merge tag 'nfsd-6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux testing commit a01c9fe32378636ae65bec8047b5de3fdb2ba5c8 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ce894faac47cd46a17c830b6a5213e362d5733f334eb134149a52fcbebea8719 all runs: OK false negative chance: 0.000 # git bisect good a01c9fe32378636ae65bec8047b5de3fdb2ba5c8 Bisecting: 1299 revisions left to test after this (roughly 10 steps) [ca61ba3885274a684c83d8a538eb77b30e38ee92] Merge branch 'rework-genet-mdioclocking' testing commit ca61ba3885274a684c83d8a538eb77b30e38ee92 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 7ecc07577cefe69d3770042a2b8ddc9384367634087f031a6a1858c9d4aa90b0 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in modify_prefix_route representative crash: BUG: unable to handle kernel NULL pointer dereference in modify_prefix_route, types: [UNKNOWN] # git bisect bad ca61ba3885274a684c83d8a538eb77b30e38ee92 Bisecting: 650 revisions left to test after this (roughly 9 steps) [f42822f22b1c5f72c7e3497d9683f379ab0c5fe4] bnxt_en: Use firmware provided maximum filter counts. testing commit f42822f22b1c5f72c7e3497d9683f379ab0c5fe4 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: e51269c5ecca895436217bd89cd10abd1b1046319f955d512a9223521bc50804 all runs: OK false negative chance: 0.000 # git bisect good f42822f22b1c5f72c7e3497d9683f379ab0c5fe4 Bisecting: 325 revisions left to test after this (roughly 8 steps) [e10cd2ddd89e8b3e61b49247067e79f7debec2f1] wifi: rtw89: load BB parameters to PHY-1 testing commit e10cd2ddd89e8b3e61b49247067e79f7debec2f1 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 64fafb216aac00e770637b5b5659c0df9a255aeac820c27e25cf9a2455a8c442 all runs: OK false negative chance: 0.000 # git bisect good e10cd2ddd89e8b3e61b49247067e79f7debec2f1 Bisecting: 162 revisions left to test after this (roughly 7 steps) [81800aef0eba33df2b30f2e29a0137078b9ba256] net: mdio_bus: make mdio_bus_type const testing commit 81800aef0eba33df2b30f2e29a0137078b9ba256 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 19425920a81b52c17149b30e045069fb78643bfc07b31a74e8a5b9aeebb7f888 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in modify_prefix_route representative crash: BUG: unable to handle kernel NULL pointer dereference in modify_prefix_route, types: [UNKNOWN] # git bisect bad 81800aef0eba33df2b30f2e29a0137078b9ba256 Bisecting: 81 revisions left to test after this (roughly 6 steps) [bed90b06b6812d9c8c848414b090ddf38f0e6cc1] net: phy: aquantia: clear PMD Global Transmit Disable bit during init testing commit bed90b06b6812d9c8c848414b090ddf38f0e6cc1 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c487be8130260320b08df207c9beb8b2a441c40eded894f857349367d7a927a4 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in modify_prefix_route representative crash: BUG: unable to handle kernel NULL pointer dereference in modify_prefix_route, types: [UNKNOWN] # git bisect bad bed90b06b6812d9c8c848414b090ddf38f0e6cc1 Bisecting: 40 revisions left to test after this (roughly 5 steps) [1cd3b407977c3ab1d2ddc26cb7113e7fb1509cd1] octeon_ep_vf: add Tx/Rx processing and interrupt support testing commit 1cd3b407977c3ab1d2ddc26cb7113e7fb1509cd1 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 7dc2d40772364c9a05a9609a6bb99aa1aa519aa5aed584051a3cbdb5ca6307f0 all runs: OK false negative chance: 0.000 # git bisect good 1cd3b407977c3ab1d2ddc26cb7113e7fb1509cd1 Bisecting: 20 revisions left to test after this (roughly 4 steps) [b4bd77971f3c290c4694ed710cc6967593b10bc2] net: dsa: realtek: migrate user_mii_bus setup to realtek_dsa testing commit b4bd77971f3c290c4694ed710cc6967593b10bc2 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 254b4a2aa23eb874f2c7000824e8e6fa640f4faa5332671d6f85a1c05552dd40 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in modify_prefix_route representative crash: BUG: unable to handle kernel NULL pointer dereference in modify_prefix_route, types: [UNKNOWN] # git bisect bad b4bd77971f3c290c4694ed710cc6967593b10bc2 Bisecting: 9 revisions left to test after this (roughly 3 steps) [f7ab791d7f737087dc84f12040a86c581c849147] Merge branch 'ipv6-expired-routes' testing commit f7ab791d7f737087dc84f12040a86c581c849147 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 4f8b7eaab411c233a73266a85679a21f6920ca2e6636d794158f63c4eb7359cb all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in modify_prefix_route representative crash: BUG: unable to handle kernel NULL pointer dereference in modify_prefix_route, types: [UNKNOWN] # git bisect bad f7ab791d7f737087dc84f12040a86c581c849147 Bisecting: 4 revisions left to test after this (roughly 2 steps) [129e406e1811538c1afc9c8e97d61bb18eed3363] net/ipv6: set expires in rt6_add_dflt_router(). testing commit 129e406e1811538c1afc9c8e97d61bb18eed3363 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c8dc1a5c5000b51d7929e685c4d0ba3a2475b6a7b362bf1f0427844ab5540520 all runs: OK false negative chance: 0.000 # git bisect good 129e406e1811538c1afc9c8e97d61bb18eed3363 Bisecting: 2 revisions left to test after this (roughly 1 step) [5eb902b8e7193cdcb33242af0a56502e6b5206e9] net/ipv6: Remove expired routes with a separated list of routes. testing commit 5eb902b8e7193cdcb33242af0a56502e6b5206e9 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 22a29172a15516d7f272641b9278780a26817aeb10c093ea0f9a5430b7eb27f9 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in modify_prefix_route representative crash: BUG: unable to handle kernel NULL pointer dereference in modify_prefix_route, types: [UNKNOWN] # git bisect bad 5eb902b8e7193cdcb33242af0a56502e6b5206e9 Bisecting: 0 revisions left to test after this (roughly 0 steps) [60df43d3a72c5fc50ff854cca17c9935c4398794] net/ipv6: Remove unnecessary clean. testing commit 60df43d3a72c5fc50ff854cca17c9935c4398794 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 94abfea5a359af3440da9bdfda6b97cab00092462c97713220c8711411271df0 all runs: OK false negative chance: 0.000 # git bisect good 60df43d3a72c5fc50ff854cca17c9935c4398794 5eb902b8e7193cdcb33242af0a56502e6b5206e9 is the first bad commit commit 5eb902b8e7193cdcb33242af0a56502e6b5206e9 Author: Kui-Feng Lee Date: Thu Feb 8 14:06:51 2024 -0800 net/ipv6: Remove expired routes with a separated list of routes. FIB6 GC walks trees of fib6_tables to remove expired routes. Walking a tree can be expensive if the number of routes in a table is big, even if most of them are permanent. Checking routes in a separated list of routes having expiration will avoid this potential issue. Reviewed-by: David Ahern Signed-off-by: Kui-Feng Lee Signed-off-by: David S. Miller include/net/ip6_fib.h | 46 ++++++++++++++++++++++++++++++++++++++- net/ipv6/addrconf.c | 41 +++++++++++++++++++++++++++++------ net/ipv6/ip6_fib.c | 60 ++++++++++++++++++++++++++++++++++++++++++++++----- net/ipv6/ndisc.c | 10 ++++++++- net/ipv6/route.c | 13 +++++++++-- 5 files changed, 154 insertions(+), 16 deletions(-) accumulated error probability: 0.00 culprit signature: 22a29172a15516d7f272641b9278780a26817aeb10c093ea0f9a5430b7eb27f9 parent signature: 94abfea5a359af3440da9bdfda6b97cab00092462c97713220c8711411271df0 revisions tested: 25, total time: 4h57m47.330620653s (build: 2h13m2.42962741s, test: 2h28m7.839558676s) first bad commit: 5eb902b8e7193cdcb33242af0a56502e6b5206e9 net/ipv6: Remove expired routes with a separated list of routes. recipients (to): ["davem@davemloft.net" "dsahern@kernel.org" "thinker.li@gmail.com"] recipients (cc): [] crash: BUG: unable to handle kernel NULL pointer dereference in modify_prefix_route BUG: kernel NULL pointer dereference, address: 0000000000000038 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 10df72067 P4D 10df72067 PUD 10df73067 PMD 0 Oops: 0000 [#1] PREEMPT SMP NOPTI CPU: 0 PID: 3437 Comm: syz.3.16 Not tainted 6.8.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:__lock_acquire.constprop.0+0x2f6/0x570 kernel/locking/lockdep.c:5009 Code: 0a 48 83 f8 ff 0f 85 11 02 00 00 0f b7 45 20 66 25 ff 1f 66 89 44 24 16 0f b6 45 22 83 e0 03 88 44 24 10 e9 69 fe ff ff 89 f0 <48> 8b 44 c7 08 48 85 c0 0f 85 64 fd ff ff e9 35 fd ff ff e8 32 61 RSP: 0018:ffffc900024bf8b0 EFLAGS: 00010097 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000030 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000 R13: 0000000000000000 R14: ffff888103b52140 R15: 0000000000000200 FS: 00007fae9485d6c0(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000038 CR3: 000000010ffe6000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_acquire kernel/locking/lockdep.c:5754 [inline] lock_acquire+0xab/0x180 kernel/locking/lockdep.c:5719 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline] _raw_spin_lock_bh+0x2e/0x40 kernel/locking/spinlock.c:178 spin_lock_bh include/linux/spinlock.h:356 [inline] modify_prefix_route+0xc0/0x1a0 net/ipv6/addrconf.c:4784 inet6_addr_modify net/ipv6/addrconf.c:4876 [inline] inet6_rtm_newaddr+0x67e/0x800 net/ipv6/addrconf.c:5011 rtnetlink_rcv_msg+0x17d/0x490 net/core/rtnetlink.c:6606 netlink_rcv_skb+0x53/0x100 net/netlink/af_netlink.c:2543 netlink_unicast_kernel net/netlink/af_netlink.c:1341 [inline] netlink_unicast+0x2ab/0x3e0 net/netlink/af_netlink.c:1367 netlink_sendmsg+0x219/0x480 net/netlink/af_netlink.c:1908 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg net/socket.c:745 [inline] ____sys_sendmsg+0x361/0x3a0 net/socket.c:2584 ___sys_sendmsg+0x95/0xe0 net/socket.c:2638 __sys_sendmsg+0x75/0xc0 net/socket.c:2667 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x73/0x180 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x6f/0x77 RIP: 0033:0x7fae9397e819 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fae9485d038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fae93b35fa0 RCX: 00007fae9397e819 RDX: 0000000000040040 RSI: 0000000020000140 RDI: 0000000000000004 RBP: 00007fae939f175e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fae93b35fa0 R15: 00007ffe934928c8 Modules linked in: CR2: 0000000000000038 ---[ end trace 0000000000000000 ]--- RIP: 0010:__lock_acquire.constprop.0+0x2f6/0x570 kernel/locking/lockdep.c:5009 Code: 0a 48 83 f8 ff 0f 85 11 02 00 00 0f b7 45 20 66 25 ff 1f 66 89 44 24 16 0f b6 45 22 83 e0 03 88 44 24 10 e9 69 fe ff ff 89 f0 <48> 8b 44 c7 08 48 85 c0 0f 85 64 fd ff ff e9 35 fd ff ff e8 32 61 RSP: 0018:ffffc900024bf8b0 EFLAGS: 00010097 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000030 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000 R13: 0000000000000000 R14: ffff888103b52140 R15: 0000000000000200 FS: 00007fae9485d6c0(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000038 CR3: 000000010ffe6000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 0a 48 83 or -0x7d(%rax),%cl 3: f8 clc 4: ff 0f decl (%rdi) 6: 85 11 test %edx,(%rcx) 8: 02 00 add (%rax),%al a: 00 0f add %cl,(%rdi) c: b7 45 mov $0x45,%bh e: 20 66 25 and %ah,0x25(%rsi) 11: ff 1f lcall *(%rdi) 13: 66 89 44 24 16 mov %ax,0x16(%rsp) 18: 0f b6 45 22 movzbl 0x22(%rbp),%eax 1c: 83 e0 03 and $0x3,%eax 1f: 88 44 24 10 mov %al,0x10(%rsp) 23: e9 69 fe ff ff jmp 0xfffffe91 28: 89 f0 mov %esi,%eax * 2a: 48 8b 44 c7 08 mov 0x8(%rdi,%rax,8),%rax <-- trapping instruction 2f: 48 85 c0 test %rax,%rax 32: 0f 85 64 fd ff ff jne 0xfffffd9c 38: e9 35 fd ff ff jmp 0xfffffd72 3d: e8 .byte 0xe8 3e: 32 .byte 0x32 3f: 61 (bad)