ci starts bisection 2025-01-04 22:08:38.063991996 +0000 UTC m=+118644.880603656 bisecting fixing commit since 1c892cdd8fe004ed6cef4501a7141594a1616368 building syzkaller on 8d446f1521b580230a60c9ae228bf0c26312c80b ensuring issue is reproducible on original commit 1c892cdd8fe004ed6cef4501a7141594a1616368 testing commit 1c892cdd8fe004ed6cef4501a7141594a1616368 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 1869593e25bc4fbc1f00cfbafd9514568446a75ba5094f764d166a8c03ee2d6a all runs: crashed: divide error in drm_mode_convert_to_umode representative crash: divide error in drm_mode_convert_to_umode, types: [UNKNOWN] check whether we can drop unnecessary instrumentation disabling configs for [BUG KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed testing commit 1c892cdd8fe004ed6cef4501a7141594a1616368 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 4b937c13443efe28667a233a15820881f3dcb0c9f6abb7505e2ea7a73564fdba all runs: crashed: divide error in drm_mode_convert_to_umode representative crash: divide error in drm_mode_convert_to_umode, types: [UNKNOWN] the bug reproduces without the instrumentation disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG KASAN], they are not needed kconfig minimization: base=4045 full=7963 leaves diff=2013 split chunks (needed=false): <2013> split chunk #0 of len 2013 into 5 parts testing without sub-chunk 1/5 disabling configs for [HANG LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit 1c892cdd8fe004ed6cef4501a7141594a1616368 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d37fef04f531ef7cafa5f1de0e966a759551558e279c290994a982c851b5ee47 all runs: crashed: divide error in drm_mode_convert_to_umode representative crash: divide error in drm_mode_convert_to_umode, types: [UNKNOWN] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed testing commit 1c892cdd8fe004ed6cef4501a7141594a1616368 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 366b86d560ba02d95f4fc7bcd80c4e65aa2f99244f1dbd84b3f5e3b69903de78 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 [BUG KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed testing commit 1c892cdd8fe004ed6cef4501a7141594a1616368 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 84c404bcab1d3d587479c96aeb7279ddc1da6e9fcb2cf4c3d9e17b79adceb3f8 all runs: crashed: divide error in drm_mode_convert_to_umode representative crash: divide error in drm_mode_convert_to_umode, types: [UNKNOWN] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN BUG KASAN LOCKDEP], they are not needed testing commit 1c892cdd8fe004ed6cef4501a7141594a1616368 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c4ea2ae201da4ac699849ea674eaf74b2ce87a90c858d462a61ba4286266286a all runs: crashed: divide error in drm_mode_convert_to_umode representative crash: divide error in drm_mode_convert_to_umode, types: [UNKNOWN] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN BUG KASAN LOCKDEP], they are not needed testing commit 1c892cdd8fe004ed6cef4501a7141594a1616368 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6990d1f78aac6c0193861859402abf23e6834b0a6403e079e133afc8d1c69483 all runs: crashed: divide error in drm_mode_convert_to_umode representative crash: divide error in drm_mode_convert_to_umode, types: [UNKNOWN] the chunk can be dropped minimized to 403 configs; suspects: [6LOWPAN ARCH_ENABLE_MEMORY_HOTREMOVE ASUS_WMI CMA COMMON_CLK DAX DLM DRM DRM_BRIDGE DRM_DISPLAY_HELPER DRM_DP_AUX_CHARDEV DRM_FBDEV_EMULATION DRM_GEM_SHMEM_HELPER 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_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 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_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 GCC11_NO_ARRAY_BOUNDS GENERIC_PHY GET_FREE_REGION GFS2_FS GFS2_FS_LOCKING_DLM 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 GVE HAVE_ARCH_NODE_DEV_GROUP HAVE_ARCH_USERFAULTFD_MINOR HAVE_ARCH_USERFAULTFD_WP HAVE_BOOTMEM_INFO_NODE HAVE_CLK_PREPARE HAVE_FAST_GUP 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_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_CMEDIA HID_CORSAIR HID_CP2112 HID_ELECOM HID_ELO HID_EMS_FF HID_GEMBIRD HID_GFRM HID_GREENASIA HID_GT683R HID_HOLTEK HID_ICADE HID_KEYTOUCH HID_KYE HID_LCPOWER HID_LED HID_LENOVO HID_LOGITECH_DJ HID_LOGITECH_HIDPP HID_MAGICMOUSE HID_MAYFLASH 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_RETRODE HID_RMI HID_ROCCAT HID_SAITEK HID_SENSOR_ACCEL_3D HID_SENSOR_ALS 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_SPEEDLINK HID_STEELSERIES HID_THINGM HID_TIVO HID_TWINHAN HID_UCLOGIC HID_UDRAW_PS3 HID_WACOM HID_WALTOP HID_WIIMOTE HID_XINMO HID_ZYDACRON HMM_MIRROR HOLTEK_FF HOTPLUG_PCI_PCIE HPET_MMAP HPET_MMAP_DEFAULT HPFS_FS I2C_ALGOBIT I2C_CHARDEV 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 IEEE802154_SOCKET IFB IIO IIO_BUFFER IIO_KFIFO_BUF IIO_TRIGGER IIO_TRIGGERED_BUFFER IKCONFIG IKCONFIG_PROC IMA 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_IDMA64 INTEL_IOATDMA INTEL_IOMMU_DEFAULT_ON INTEL_IOMMU_SVM INTEL_ISH_HID INTEL_SOC_PMIC_CHTWC INTERVAL_TREE_SPAN_ITER IOMMUFD IOMMUFD_DRIVER 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_LC IP_VS_MH IP_VS_NFCT IP_VS_NQ IP_VS_OVF IP_VS_PE_SIP IP_VS_PROTO_AH IP_VS_PROTO_AH_ESP IP_VS_PROTO_ESP IP_VS_PROTO_SCTP IP_VS_PROTO_TCP IP_VS_PROTO_UDP IP_VS_RR 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 RFKILL SND SOUND STAGING TRANSPARENT_HUGEPAGE VIDEO_DEV VIRTIO_FS WAN ZONE_DEVICE] disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG KASAN], they are not needed testing current HEAD ab75170520d4964f3acf8bb1f91d34cbc650688e testing commit ab75170520d4964f3acf8bb1f91d34cbc650688e gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 9899ce22dd576becd388d1cecc232d8ace45313243d6d3eaa90e19216a765ecb all runs: OK false negative chance: 0.000 # git bisect start ab75170520d4964f3acf8bb1f91d34cbc650688e 1c892cdd8fe004ed6cef4501a7141594a1616368 Bisecting: 37771 revisions left to test after this (roughly 15 steps) [280e36f0d5b997173d014c07484c03a7f7750668] nsfs: use cleanup guard determine whether the revision contains the guilty commit revision 1c892cdd8fe004ed6cef4501a7141594a1616368 crashed and is reachable testing commit 280e36f0d5b997173d014c07484c03a7f7750668 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 200418ec737cec3e1f8ac5eec728f5e27961d03640b267711ac1ef9f2100dcef all runs: crashed: divide error in drm_mode_convert_to_umode representative crash: divide error in drm_mode_convert_to_umode, types: [UNKNOWN] # git bisect good 280e36f0d5b997173d014c07484c03a7f7750668 Bisecting: 18912 revisions left to test after this (roughly 14 steps) [5f153b63302af24e7f807b0208f380f5c8654df4] Merge tag 'ntb-6.12' of https://github.com/jonmason/ntb determine whether the revision contains the guilty commit revision 1c892cdd8fe004ed6cef4501a7141594a1616368 crashed and is reachable testing commit 5f153b63302af24e7f807b0208f380f5c8654df4 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 8e23ca15770f1dfe5b12dc3abd64a9b51e9c907ebacf5c3c451b0031937eb119 all runs: crashed: divide error in drm_mode_convert_to_umode representative crash: divide error in drm_mode_convert_to_umode, types: [UNKNOWN] # git bisect good 5f153b63302af24e7f807b0208f380f5c8654df4 Bisecting: 9715 revisions left to test after this (roughly 13 steps) [6e95ef0258ff4ee23ae3b06bf6b00b33dbbd5ef7] Merge tag 'bpf-next-6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next determine whether the revision contains the guilty commit revision 1c892cdd8fe004ed6cef4501a7141594a1616368 crashed and is reachable testing commit 6e95ef0258ff4ee23ae3b06bf6b00b33dbbd5ef7 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 4fec69c70c5d356542892899e3904988daa403547792b4b7983cc0ca75bc344a all runs: crashed: divide error in drm_mode_convert_to_umode representative crash: divide error in drm_mode_convert_to_umode, types: [UNKNOWN] # git bisect good 6e95ef0258ff4ee23ae3b06bf6b00b33dbbd5ef7 Bisecting: 4885 revisions left to test after this (roughly 12 steps) [5c00ff742bf5caf85f60e1c73999f99376fb865d] Merge tag 'mm-stable-2024-11-18-19-27' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm determine whether the revision contains the guilty commit revision 6e95ef0258ff4ee23ae3b06bf6b00b33dbbd5ef7 crashed and is reachable testing commit 5c00ff742bf5caf85f60e1c73999f99376fb865d gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 15098b6f94c226b3f34e09bb3ca6eac42b3d8b4382d2c481c62516b0ad44e027 all runs: crashed: divide error in drm_mode_convert_to_umode representative crash: divide error in drm_mode_convert_to_umode, types: [UNKNOWN] # git bisect good 5c00ff742bf5caf85f60e1c73999f99376fb865d Bisecting: 2414 revisions left to test after this (roughly 11 steps) [a0c1ca3934ddffe4f3f2a2bd860283a7b0ca5439] Merge tag 'staging-6.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging determine whether the revision contains the guilty commit revision 1c892cdd8fe004ed6cef4501a7141594a1616368 crashed and is reachable testing commit a0c1ca3934ddffe4f3f2a2bd860283a7b0ca5439 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: dace4e2c10e0e006a239a8ca98f450e08ef76b20924420593025c23fc38a8426 all runs: crashed: divide error in drm_mode_convert_to_umode representative crash: divide error in drm_mode_convert_to_umode, types: [UNKNOWN] # git bisect good a0c1ca3934ddffe4f3f2a2bd860283a7b0ca5439 Bisecting: 1206 revisions left to test after this (roughly 10 steps) [f136552b7ce3a03bf9c7a8baad78bed8056ed823] Merge branch 'qca_spi-fix-spi-specific-issues' determine whether the revision contains the guilty commit revision 5c00ff742bf5caf85f60e1c73999f99376fb865d crashed and is reachable testing commit f136552b7ce3a03bf9c7a8baad78bed8056ed823 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: fd56a1e10015afed940de4a1100d14d42326b512e1eedd73dbc545a266688c20 all runs: crashed: divide error in drm_mode_convert_to_umode representative crash: divide error in drm_mode_convert_to_umode, types: [UNKNOWN] # git bisect good f136552b7ce3a03bf9c7a8baad78bed8056ed823 Bisecting: 603 revisions left to test after this (roughly 9 steps) [f7c7a1ba222a546438921b0d378a07e7776f9b43] Merge tag 'irq_urgent_for_v6.13_rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip determine whether the revision contains the guilty commit revision 5f153b63302af24e7f807b0208f380f5c8654df4 crashed and is reachable testing commit f7c7a1ba222a546438921b0d378a07e7776f9b43 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a624d6854989dcf38ace59ed95c74e5643c48022ce888cc76ab8619a34be7e6d all runs: crashed: divide error in drm_mode_convert_to_umode representative crash: divide error in drm_mode_convert_to_umode, types: [UNKNOWN] # git bisect good f7c7a1ba222a546438921b0d378a07e7776f9b43 Bisecting: 299 revisions left to test after this (roughly 8 steps) [4aa748dd1abf337426b4c941ae1b606ed0e2a5aa] Merge tag 'mm-hotfixes-stable-2024-12-21-12-09' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm determine whether the revision contains the guilty commit revision f136552b7ce3a03bf9c7a8baad78bed8056ed823 crashed and is reachable testing commit 4aa748dd1abf337426b4c941ae1b606ed0e2a5aa gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: bf81b0f43bc184beff6269ddf8844560aac382d92cc139285c83ffe8d738cf53 all runs: OK false negative chance: 0.000 # git bisect bad 4aa748dd1abf337426b4c941ae1b606ed0e2a5aa Bisecting: 147 revisions left to test after this (roughly 7 steps) [8faabc041a001140564f718dabe37753e88b37fa] Merge tag 'net-6.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net determine whether the revision contains the guilty commit revision 1c892cdd8fe004ed6cef4501a7141594a1616368 crashed and is reachable testing commit 8faabc041a001140564f718dabe37753e88b37fa gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ec3455b75c354dff864529604bdfd32d8586b7490395c7a0dcdc2977398db19d all runs: crashed: divide error in drm_mode_convert_to_umode representative crash: divide error in drm_mode_convert_to_umode, types: [UNKNOWN] # git bisect good 8faabc041a001140564f718dabe37753e88b37fa Bisecting: 74 revisions left to test after this (roughly 6 steps) [499551201b5f4fd3c0618a3e95e3d0d15ea18f31] Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux determine whether the revision contains the guilty commit revision 1c892cdd8fe004ed6cef4501a7141594a1616368 crashed and is reachable testing commit 499551201b5f4fd3c0618a3e95e3d0d15ea18f31 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 4c2e2c9559aca8b6ebe780ddf302782c3478e8df998a799691cbc7db4ec7b736 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 # git bisect bad 499551201b5f4fd3c0618a3e95e3d0d15ea18f31 Bisecting: 36 revisions left to test after this (roughly 5 steps) [e639fb046b8150625c1b96bf6f02a18f11ef1760] Merge tag 'amd-drm-fixes-6.13-2024-12-18' of https://gitlab.freedesktop.org/agd5f/linux into drm-fixes determine whether the revision contains the guilty commit revision 5f153b63302af24e7f807b0208f380f5c8654df4 crashed and is reachable testing commit e639fb046b8150625c1b96bf6f02a18f11ef1760 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a015f7b64da822ad801c01b019f9209359d8976e7b4e9a997973db4306ee363d all runs: OK false negative chance: 0.000 # git bisect bad e639fb046b8150625c1b96bf6f02a18f11ef1760 Bisecting: 17 revisions left to test after this (roughly 4 steps) [0f6482caa6acdfdfc744db7430771fe7e6c4e787] accel/ivpu: Fix WARN in ivpu_ipc_send_receive_internal() determine whether the revision contains the guilty commit revision 1c892cdd8fe004ed6cef4501a7141594a1616368 crashed and is reachable testing commit 0f6482caa6acdfdfc744db7430771fe7e6c4e787 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 5c078d826e32b3529670be3c78979470237d960f776e407c62b388fccd87b880 all runs: OK false negative chance: 0.000 # git bisect bad 0f6482caa6acdfdfc744db7430771fe7e6c4e787 Bisecting: 8 revisions left to test after this (roughly 3 steps) [406dd4c7984a457567ca652455d5efad81983f02] drm/panel: st7701: Add prepare_prev_first flag to drm_panel determine whether the revision contains the guilty commit revision a0c1ca3934ddffe4f3f2a2bd860283a7b0ca5439 crashed and is reachable testing commit 406dd4c7984a457567ca652455d5efad81983f02 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 42e51dcf2fe18525b6cb29463446492cb8e7ada180457b16135831019c83d6ec all runs: crashed: divide error in drm_mode_convert_to_umode representative crash: divide error in drm_mode_convert_to_umode, types: [UNKNOWN] # git bisect good 406dd4c7984a457567ca652455d5efad81983f02 Bisecting: 4 revisions left to test after this (roughly 2 steps) [8fc38062be3f692ff8816da84fde71972530bcc4] fbdev: Fix recursive dependencies wrt BACKLIGHT_CLASS_DEVICE determine whether the revision contains the guilty commit revision a0c1ca3934ddffe4f3f2a2bd860283a7b0ca5439 crashed and is reachable testing commit 8fc38062be3f692ff8816da84fde71972530bcc4 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 34fda780911c659557e99ae2ff1e0433268460819c7188142a108cf166d4076f 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 # git bisect bad 8fc38062be3f692ff8816da84fde71972530bcc4 Bisecting: 1 revision left to test after this (roughly 1 step) [080b2e7b5e9ad23343e4b11f0751e4c724a78958] drm/display: use ERR_PTR on DP tunnel manager creation fail determine whether the revision contains the guilty commit revision a0c1ca3934ddffe4f3f2a2bd860283a7b0ca5439 crashed and is reachable testing commit 080b2e7b5e9ad23343e4b11f0751e4c724a78958 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a5cc23d151fe753ecf246a5ada6559b34bab1bdb7d523592a927d095f1678435 all runs: crashed: divide error in drm_mode_convert_to_umode representative crash: divide error in drm_mode_convert_to_umode, types: [UNKNOWN] # git bisect good 080b2e7b5e9ad23343e4b11f0751e4c724a78958 Bisecting: 0 revisions left to test after this (roughly 0 steps) [9398332f23fab10c5ec57c168b44e72997d6318e] drm/modes: Avoid divide by zero harder in drm_mode_vrefresh() determine whether the revision contains the guilty commit revision 1c892cdd8fe004ed6cef4501a7141594a1616368 crashed and is reachable testing commit 9398332f23fab10c5ec57c168b44e72997d6318e gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 2fd0c63f2c46327a5f37b5bb6f3734dd0979beabd197eb40b007a3d5cbb50b26 all runs: OK false negative chance: 0.000 # git bisect bad 9398332f23fab10c5ec57c168b44e72997d6318e 9398332f23fab10c5ec57c168b44e72997d6318e is the first bad commit commit 9398332f23fab10c5ec57c168b44e72997d6318e Author: Ville Syrjälä Date: Fri Nov 29 06:26:28 2024 +0200 drm/modes: Avoid divide by zero harder in drm_mode_vrefresh() drm_mode_vrefresh() is trying to avoid divide by zero by checking whether htotal or vtotal are zero. But we may still end up with a div-by-zero of vtotal*htotal*... Cc: stable@vger.kernel.org Reported-by: syzbot+622bba18029bcde672e1@syzkaller.appspotmail.com Closes: https://syzkaller.appspot.com/bug?extid=622bba18029bcde672e1 Signed-off-by: Ville Syrjälä Link: https://patchwork.freedesktop.org/patch/msgid/20241129042629.18280-2-ville.syrjala@linux.intel.com Reviewed-by: Jani Nikula drivers/gpu/drm/drm_modes.c | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-) accumulated error probability: 0.00 culprit signature: 2fd0c63f2c46327a5f37b5bb6f3734dd0979beabd197eb40b007a3d5cbb50b26 parent signature: a5cc23d151fe753ecf246a5ada6559b34bab1bdb7d523592a927d095f1678435 revisions tested: 24, total time: 4h30m19.845208065s (build: 2h14m42.35061939s, test: 1h58m29.607634682s) first good commit: 9398332f23fab10c5ec57c168b44e72997d6318e drm/modes: Avoid divide by zero harder in drm_mode_vrefresh() recipients (to): ["airlied@gmail.com" "dri-devel@lists.freedesktop.org" "jani.nikula@intel.com" "maarten.lankhorst@linux.intel.com" "mripard@kernel.org" "simona@ffwll.ch" "tzimmermann@suse.de" "ville.syrjala@linux.intel.com"] recipients (cc): ["linux-kernel@vger.kernel.org"]