ci starts bisection 2023-11-12 15:49:32.959593831 +0000 UTC m=+139498.789758107 bisecting cause commit starting from ac347a0655dbc7d885e217c89dddd16e2800bd58 building syzkaller on 6d6dbf8ab21a52df701946afac2a86f93a88fdc8 ensuring issue is reproducible on original commit ac347a0655dbc7d885e217c89dddd16e2800bd58 testing commit ac347a0655dbc7d885e217c89dddd16e2800bd58 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 73236740433cab78da7310e8fbad1729bf9ce46c90e4964b5450d3e9707b6dd4 all runs: crashed: divide error in drm_mode_debug_printmodeline representative crash: divide error in drm_mode_debug_printmodeline, 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 ac347a0655dbc7d885e217c89dddd16e2800bd58 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b86326e9271d496f23800c963ea5b7fe5a2946055eca775d13da47599bffaefc all runs: crashed: divide error in drm_mode_debug_printmodeline representative crash: divide error in drm_mode_debug_printmodeline, types: [UNKNOWN] the bug reproduces without the instrumentation disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN BUG KASAN LOCKDEP], they are not needed kconfig minimization: base=3930 full=7650 leaves diff=1997 split chunks (needed=false): <1997> split chunk #0 of len 1997 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 ac347a0655dbc7d885e217c89dddd16e2800bd58 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 8b5884c71afa1b40fb19be6cbcb70e3bfd126d94cac2c2fb972a58f762a13f28 all runs: crashed: divide error in drm_mode_debug_printmodeline representative crash: divide error in drm_mode_debug_printmodeline, types: [UNKNOWN] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [HANG LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit ac347a0655dbc7d885e217c89dddd16e2800bd58 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: e5d59a6b9245fa7a5c7e032461b211658916e0e88dadd2e82d7add9cc0d248f1 all runs: OK false negative chance: 0.000 testing without sub-chunk 3/5 disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG KASAN], they are not needed testing commit ac347a0655dbc7d885e217c89dddd16e2800bd58 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6bee21f63cb5e9c82dfa0d9be72a53af153dfa769b2e23b77b0d481705cbb619 all runs: crashed: divide error in drm_mode_debug_printmodeline representative crash: divide error in drm_mode_debug_printmodeline, types: [UNKNOWN] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP HANG], they are not needed testing commit ac347a0655dbc7d885e217c89dddd16e2800bd58 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 96ad486a77fa4c005a53dbe8da89d89f2eac670ec4d49cccf44121bf47e9fd5a all runs: crashed: divide error in drm_mode_debug_printmodeline representative crash: divide error in drm_mode_debug_printmodeline, types: [UNKNOWN] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [BUG KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed testing commit ac347a0655dbc7d885e217c89dddd16e2800bd58 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ec714c859afb348e3c5946e30930e658648721f932259232cc68a0b5d0641391 all runs: crashed: divide error in drm_mode_debug_printmodeline representative crash: divide error in drm_mode_debug_printmodeline, types: [UNKNOWN] the chunk can be dropped minimized to 400 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 EVM_EXTRA_SMACK_XATTRS 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_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 FIRMWARE_TABLE 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 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_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_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 INTERVAL_TREE_SPAN_ITER IOMMUFD IOMMUFD_DRIVER 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_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_TCP IP_VS_PROTO_UDP 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 [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP HANG], they are not needed picked [v6.6 v6.5 v6.4 v6.2 v6.0 v5.18 v5.16 v5.14 v5.11 v5.8 v5.5 v5.2 v4.20 v4.19] out of 29 release tags testing release v6.6 testing commit ffc253263a1375a65fa6c9f62a893e9767fbebfa gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 66e7f646f24bbbb83ef78b3c1b378b99a00e668e15e5915d70b2cd125df66b16 all runs: crashed: divide error in drm_mode_debug_printmodeline representative crash: divide error in drm_mode_debug_printmodeline, types: [UNKNOWN] testing release v6.5 testing commit 2dde18cd1d8fac735875f2e4987f11817cc0bc2c gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6caaea4a2bade02fce999f6652aad0d450eacb971b8299a0621f3e54fa1f06e0 all runs: crashed: divide error in drm_mode_debug_printmodeline representative crash: divide error in drm_mode_debug_printmodeline, types: [UNKNOWN] testing release v6.4 testing commit 6995e2de6891c724bfeb2db33d7b87775f913ad1 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a118c56c38a057ca2d491ac3b4da931e0f4ba6eb1320c88c9db66888ca3d0825 all runs: crashed: divide error in drm_mode_debug_printmodeline representative crash: divide error in drm_mode_debug_printmodeline, types: [UNKNOWN] testing release v6.2 testing commit c9c3395d5e3dcc6daee66c6908354d47bf98cb0c gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 4d2721c69de316e399616c4028aff83170a891da0060d0916a7940872570ceb1 all runs: crashed: divide error in drm_mode_debug_printmodeline representative crash: divide error in drm_mode_debug_printmodeline, types: [UNKNOWN] testing release v6.0 testing commit 4fe89d07dcc2804c8b562f6c7896a45643d34b2f gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 45480f916eec87e892fb0465a72f74ba8836a264c4ff441b46dbe7cdd933164a all runs: crashed: divide error in drm_mode_debug_printmodeline representative crash: divide error in drm_mode_debug_printmodeline, types: [UNKNOWN] testing release v5.18 testing commit 4b0986a3613c92f4ec1bdc7f60ec66fea135991f gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 7315f698e81d07a64dff47341db37d72c343bab6a6d6011059915b760057175f all runs: crashed: divide error in drm_mode_debug_printmodeline representative crash: divide error in drm_mode_debug_printmodeline, types: [UNKNOWN] testing release v5.16 testing commit df0cc57e057f18e44dac8e6c18aba47ab53202f9 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 294d6abc3a277e32ca8043f037057ee3ce3e2ffb33bd9e914238d3d371f9189e all runs: crashed: divide error in drm_mode_debug_printmodeline representative crash: divide error in drm_mode_debug_printmodeline, types: [UNKNOWN] testing release v5.14 testing commit 7d2a07b769330c34b4deabeed939325c77a7ec2f gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: f362003f192267d0da89e681a9929536f323130de7588982f101f31f328a835f all runs: crashed: divide error in drm_mode_vrefresh representative crash: divide error in drm_mode_vrefresh, types: [UNKNOWN] testing release v5.11 testing commit f40ddce88593482919761f74910f42f4b84c004b gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 46dacd23d7cfc20c823a7ae3f8912ed2247462726634b367a67bce965c9c954d all runs: crashed: divide error in drm_mode_vrefresh representative crash: divide error in drm_mode_vrefresh, types: [UNKNOWN] testing release v5.8 testing commit bcf876870b95592b52519ed4aafcf9d95999bc9c gcc compiler: gcc (GCC) 8.4.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 77cb512d0e4ca089a9069b75cbbffbc26aeb3aaf8d7401a22b99f6341a1c9667 all runs: OK false negative chance: 0.000 # git bisect start f40ddce88593482919761f74910f42f4b84c004b bcf876870b95592b52519ed4aafcf9d95999bc9c Bisecting: 25071 revisions left to test after this (roughly 15 steps) [4d0e9df5e43dba52d38b251e3b909df8fa1110be] lib, uaccess: add failure injection to usercopy functions testing commit 4d0e9df5e43dba52d38b251e3b909df8fa1110be gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: f977c9d0c4daec44a60c3cfb323c6a484d84ab3b32fafca7a2a722f44e8e20b6 all runs: OK false negative chance: 0.000 # git bisect good 4d0e9df5e43dba52d38b251e3b909df8fa1110be Bisecting: 12542 revisions left to test after this (roughly 14 steps) [8c1dccc80380fca8db09c2a81f5deb3c49b112b2] Merge tag 'core-rcu-2020-12-14' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip testing commit 8c1dccc80380fca8db09c2a81f5deb3c49b112b2 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 1accd644ace94a1608c874f0412df60033cbda04faf0583dc5561452d843cdd8 all runs: crashed: divide error in drm_mode_vrefresh representative crash: divide error in drm_mode_vrefresh, types: [UNKNOWN] # git bisect bad 8c1dccc80380fca8db09c2a81f5deb3c49b112b2 Bisecting: 6503 revisions left to test after this (roughly 13 steps) [2e368dd2bbeac6bfd50886371db185b1092067b4] Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc testing commit 2e368dd2bbeac6bfd50886371db185b1092067b4 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 09b94463fba70f1dfd8dea5d435f31640cdbd6709401330fe99bcf26308e6c63 all runs: OK false negative chance: 0.000 # git bisect good 2e368dd2bbeac6bfd50886371db185b1092067b4 Bisecting: 3250 revisions left to test after this (roughly 12 steps) [e6585a493921991653be1fd65c3aa3fb90b000ae] Merge tag 'kbuild-fixes-v5.10-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild testing commit e6585a493921991653be1fd65c3aa3fb90b000ae gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d9276a1d48bdac8d35e99d44d56975276ae5f1025cb8d6b401ee695087ce3091 all runs: OK false negative chance: 0.000 # git bisect good e6585a493921991653be1fd65c3aa3fb90b000ae Bisecting: 1476 revisions left to test after this (roughly 11 steps) [b10733527bfd864605c33ab2e9a886eec317ec39] Merge tag 'amd-drm-next-5.11-2020-12-09' of git://people.freedesktop.org/~agd5f/linux into drm-next testing commit b10733527bfd864605c33ab2e9a886eec317ec39 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 2ea597593770a86a6f77d6ec6812839249d51905a0b82dbf08236dd98c37be79 all runs: crashed: divide error in drm_mode_vrefresh representative crash: divide error in drm_mode_vrefresh, types: [UNKNOWN] # git bisect bad b10733527bfd864605c33ab2e9a886eec317ec39 Bisecting: 886 revisions left to test after this (roughly 10 steps) [9713158cb2a918c3f6f5522eed23cdeb61f22e75] drm/amdgpu: Add and use seperate reg headers for dcn302 testing commit 9713158cb2a918c3f6f5522eed23cdeb61f22e75 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 33a12e5b6cc592193a78f346e16d9e7d0985689adcb1ba426a28a902afc488cb all runs: crashed: divide error in drm_mode_vrefresh representative crash: divide error in drm_mode_vrefresh, types: [UNKNOWN] # git bisect bad 9713158cb2a918c3f6f5522eed23cdeb61f22e75 Bisecting: 438 revisions left to test after this (roughly 9 steps) [c0f98d2f8b076bf3e3183aa547395f919c943a14] Merge tag 'drm-misc-next-2020-11-05' of git://anongit.freedesktop.org/drm/drm-misc into drm-next testing commit c0f98d2f8b076bf3e3183aa547395f919c943a14 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 3c27c7a14f7949ff809a3269e622547de72baebe70638cffeaa255e6ed696fca all runs: crashed: divide error in drm_mode_vrefresh representative crash: divide error in drm_mode_vrefresh, types: [UNKNOWN] # git bisect bad c0f98d2f8b076bf3e3183aa547395f919c943a14 Bisecting: 223 revisions left to test after this (roughly 8 steps) [6a6e5988a2657cd0c91f6f1a3e7d194599248b6d] drm/ttm: replace last move_notify with delete_mem_notify testing commit 6a6e5988a2657cd0c91f6f1a3e7d194599248b6d gcc compiler: gcc (GCC) 8.4.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 21efd4f6dc97152e23ca1e03a30452aa2430a9fdbfd463b0e7e251d62eac73f8 all runs: crashed: divide error in drm_mode_vrefresh representative crash: divide error in drm_mode_vrefresh, types: [UNKNOWN] # git bisect bad 6a6e5988a2657cd0c91f6f1a3e7d194599248b6d Bisecting: 111 revisions left to test after this (roughly 7 steps) [291e8cdd6bc57658035239315d27f3f971ec062b] MAINTAINERS: mark FRAMEBUFFER LAYER as Orphan testing commit 291e8cdd6bc57658035239315d27f3f971ec062b gcc compiler: gcc (GCC) 8.4.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 51cbc36dbfdc0186176ea678be90e746f416bdd07983a027a2edec452483498a all runs: OK false negative chance: 0.000 # git bisect good 291e8cdd6bc57658035239315d27f3f971ec062b Bisecting: 55 revisions left to test after this (roughly 6 steps) [787099f8671c5cec6cadbb3da3713d97df5c7fd6] drm/panel: mantix: Fix panel reset testing commit 787099f8671c5cec6cadbb3da3713d97df5c7fd6 gcc compiler: gcc (GCC) 8.4.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: cce9f3cc16f9ec0a74415ec5d23722aa87719a6d10053fe98bac703fc1ee05a6 all runs: OK false negative chance: 0.000 # git bisect good 787099f8671c5cec6cadbb3da3713d97df5c7fd6 Bisecting: 27 revisions left to test after this (roughly 5 steps) [7a1f4fa4a62933797152578d3730058fe6861b42] drm/panel: simple: Add YTC700TLAG-05-201C testing commit 7a1f4fa4a62933797152578d3730058fe6861b42 gcc compiler: gcc (GCC) 8.4.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 0b91ff9ad60f9e33d13b787bdb6a61cde0480afb360c05ed0e9df398b9832aa9 all runs: OK false negative chance: 0.000 # git bisect good 7a1f4fa4a62933797152578d3730058fe6861b42 Bisecting: 13 revisions left to test after this (roughly 4 steps) [c37d951cb42aa340513c0bc2df10b7324fa0d856] drm/ttm: add move old to system to drivers. testing commit c37d951cb42aa340513c0bc2df10b7324fa0d856 gcc compiler: gcc (GCC) 8.4.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6d05d9e185669ef4fb96ea7f1c778ab1497123699e5ec68de94bd68ee1c6b0f5 all runs: OK false negative chance: 0.000 # git bisect good c37d951cb42aa340513c0bc2df10b7324fa0d856 Bisecting: 6 revisions left to test after this (roughly 3 steps) [29a1d482e4044ab76d0c0f6341212f1a51f48236] drm/ttm: add move to system into drivers testing commit 29a1d482e4044ab76d0c0f6341212f1a51f48236 gcc compiler: gcc (GCC) 8.4.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c8a9b0450859ba3aca56e11e7f911456b7b22e9cb9703bd312a0ccf67af686cc all runs: crashed: divide error in drm_mode_vrefresh representative crash: divide error in drm_mode_vrefresh, types: [UNKNOWN] # git bisect bad 29a1d482e4044ab76d0c0f6341212f1a51f48236 Bisecting: 3 revisions left to test after this (roughly 2 steps) [1c831ade9f352d4690e2c3c67b674bc65cb3af3e] drm/komeda: Drop local dma_parms testing commit 1c831ade9f352d4690e2c3c67b674bc65cb3af3e gcc compiler: gcc (GCC) 8.4.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 0e22dfeaec36bf53839c9754e4eeb4b59d5cdd7b9c147be1ad893f0ea4c65d7f all runs: crashed: divide error in drm_mode_vrefresh representative crash: divide error in drm_mode_vrefresh, types: [UNKNOWN] # git bisect bad 1c831ade9f352d4690e2c3c67b674bc65cb3af3e Bisecting: 0 revisions left to test after this (roughly 1 step) [ea40d7857d5250e5400f38c69ef9e17321e9c4a2] drm/vkms: fbdev emulation support testing commit ea40d7857d5250e5400f38c69ef9e17321e9c4a2 gcc compiler: gcc (GCC) 8.4.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 0e22dfeaec36bf53839c9754e4eeb4b59d5cdd7b9c147be1ad893f0ea4c65d7f all runs: crashed: divide error in drm_mode_vrefresh representative crash: divide error in drm_mode_vrefresh, types: [UNKNOWN] # git bisect bad ea40d7857d5250e5400f38c69ef9e17321e9c4a2 Bisecting: 0 revisions left to test after this (roughly 0 steps) [23fae9cf97cc0ba54e4d6c8e078871f56370f271] drm/ttm: drop ttm_bo_move_ttm wrapper testing commit 23fae9cf97cc0ba54e4d6c8e078871f56370f271 gcc compiler: gcc (GCC) 8.4.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: bbc14c6012be242aada42d46017c46834909717c1880290e7ea079dcbf60dea5 all runs: OK false negative chance: 0.000 # git bisect good 23fae9cf97cc0ba54e4d6c8e078871f56370f271 ea40d7857d5250e5400f38c69ef9e17321e9c4a2 is the first bad commit commit ea40d7857d5250e5400f38c69ef9e17321e9c4a2 Author: Daniel Vetter Date: Sat Oct 10 01:21:56 2020 +0200 drm/vkms: fbdev emulation support Hooray for generic fbdev support, making this a oneliner. We just needed to fix preferred_depth fixed and the vmap support added first. This is useful for testing fbdev testcases in igt. Right now we only have a simple one in the fbdev testcases, which passes both info and mmap subtests. v2: Augment commit message as suggested by Melissa. Acked-by: Thomas Zimmermann Reviewed-by: Melissa Wen Signed-off-by: Daniel Vetter Cc: Rodrigo Siqueira Cc: Melissa Wen Cc: Haneen Mohammed Cc: Daniel Vetter Link: https://patchwork.freedesktop.org/patch/msgid/20201009232156.3916879-3-daniel.vetter@ffwll.ch drivers/gpu/drm/vkms/vkms_drv.c | 2 ++ 1 file changed, 2 insertions(+) accumulated error probability: 0.00 culprit signature: 0e22dfeaec36bf53839c9754e4eeb4b59d5cdd7b9c147be1ad893f0ea4c65d7f parent signature: bbc14c6012be242aada42d46017c46834909717c1880290e7ea079dcbf60dea5 revisions tested: 33, total time: 8h47m15.612825942s (build: 5h31m29.783226793s, test: 2h57m21.530208072s) first bad commit: ea40d7857d5250e5400f38c69ef9e17321e9c4a2 drm/vkms: fbdev emulation support recipients (to): ["daniel.vetter@ffwll.ch" "daniel.vetter@intel.com" "melissa.srw@gmail.com" "tzimmermann@suse.de"] recipients (cc): [] crash: divide error in drm_mode_vrefresh divide_error: 0000 [#1] SMP CPU: 0 PID: 2716 Comm: syz-executor.0 Not tainted 5.9.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023 RIP: 0010:drm_mode_vrefresh+0x45/0x50 drivers/gpu/drm/drm_modes.c:775 Code: 17 e8 03 00 00 8d 34 12 a8 10 0f 45 d6 a8 20 0f b7 47 16 8d 34 09 0f 45 ce 66 83 f8 01 76 03 0f af c8 89 c8 d1 e8 01 d0 31 d2 f1 c3 0f 1f 84 00 00 00 00 00 48 85 ff 0f 84 40 01 00 00 48 8b RSP: 0018:ffffc90000e2fc78 EFLAGS: 00010246 RAX: 000000000001f400 RBX: ffffc90000e2fe58 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000800000 RDI: ffff88822b0ea100 RBP: 0000000000000000 R08: 000000000000003f R09: ffff88822b0ea100 R10: 0000000000000001 R11: ffff888232ae8660 R12: 0000000000000000 R13: ffff888232ec3d00 R14: ffff888232ae8000 R15: 00000000ffffffea FS: 00007f8d8f4446c0(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f8d8f9234b8 CR3: 000000023070a000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: drm_mode_debug_printmodeline+0x5/0x60 drivers/gpu/drm/drm_modes.c:56 drm_mode_setcrtc+0x5c1/0x710 drivers/gpu/drm/drm_crtc.c:641 drm_ioctl_kernel+0xa8/0xf0 drivers/gpu/drm/drm_ioctl.c:787 drm_ioctl+0x1f7/0x3bb drivers/gpu/drm/drm_ioctl.c:887 vfs_ioctl fs/ioctl.c:48 [inline] __do_sys_ioctl fs/ioctl.c:753 [inline] __se_sys_ioctl fs/ioctl.c:739 [inline] __x64_sys_ioctl+0x7c/0xb0 fs/ioctl.c:739 do_syscall_64+0x2d/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7f8d8f8c1ae9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f8d8f4440c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f8d8f9e0f80 RCX: 00007f8d8f8c1ae9 RDX: 0000000020000180 RSI: 00000000c06864a2 RDI: 0000000000000003 RBP: 00007f8d8f90d47a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000006 R14: 00007f8d8f9e0f80 R15: 00007ffc0ee0bfa8 Modules linked in: ---[ end trace 90c8b7976e0870ec ]--- RIP: 0010:drm_mode_vrefresh+0x45/0x50 drivers/gpu/drm/drm_modes.c:775 Code: 17 e8 03 00 00 8d 34 12 a8 10 0f 45 d6 a8 20 0f b7 47 16 8d 34 09 0f 45 ce 66 83 f8 01 76 03 0f af c8 89 c8 d1 e8 01 d0 31 d2 f1 c3 0f 1f 84 00 00 00 00 00 48 85 ff 0f 84 40 01 00 00 48 8b RSP: 0018:ffffc90000e2fc78 EFLAGS: 00010246 RAX: 000000000001f400 RBX: ffffc90000e2fe58 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000800000 RDI: ffff88822b0ea100 RBP: 0000000000000000 R08: 000000000000003f R09: ffff88822b0ea100 R10: 0000000000000001 R11: ffff888232ae8660 R12: 0000000000000000 R13: ffff888232ec3d00 R14: ffff888232ae8000 R15: 00000000ffffffea FS: 00007f8d8f4446c0(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f8d8f9234b8 CR3: 000000023070a000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: e8 03 00 00 8d call 0x8d000008 5: 34 12 xor $0x12,%al 7: a8 10 test $0x10,%al 9: 0f 45 d6 cmovne %esi,%edx c: a8 20 test $0x20,%al e: 0f b7 47 16 movzwl 0x16(%rdi),%eax 12: 8d 34 09 lea (%rcx,%rcx,1),%esi 15: 0f 45 ce cmovne %esi,%ecx 18: 66 83 f8 01 cmp $0x1,%ax 1c: 76 03 jbe 0x21 1e: 0f af c8 imul %eax,%ecx 21: 89 c8 mov %ecx,%eax 23: d1 e8 shr %eax 25: 01 d0 add %edx,%eax 27: 31 d2 xor %edx,%edx * 29: f7 f1 div %ecx <-- trapping instruction 2b: c3 ret 2c: 0f 1f 84 00 00 00 00 nopl 0x0(%rax,%rax,1) 33: 00 34: 48 85 ff test %rdi,%rdi 37: 0f 84 40 01 00 00 je 0x17d 3d: 48 rex.W 3e: 8b .byte 0x8b