ci starts bisection 2023-08-16 03:30:35.234048687 +0000 UTC m=+392013.873569990 bisecting cause commit starting from 2ccdd1b13c591d306f0401d98dedc4bdcd02b421 building syzkaller on 39990d513277ce9372a4cc89bdac23d9fc30b056 ensuring issue is reproducible on original commit 2ccdd1b13c591d306f0401d98dedc4bdcd02b421 testing commit 2ccdd1b13c591d306f0401d98dedc4bdcd02b421 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 7c0d3d18e099bb0641dcf30560d5e2f4898e5f9cdd31e174478f8762d565b263 all runs: crashed: kernel BUG in do_page_mkwrite representative crash: kernel BUG in do_page_mkwrite, types: [BUG] check whether we can drop unnecessary instrumentation disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN KASAN], they are not needed testing commit 2ccdd1b13c591d306f0401d98dedc4bdcd02b421 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: e70554412a73f716bdec208d44b04adb167e0b8c00605703cf1b4f4c81116c75 all runs: crashed: kernel BUG in do_page_mkwrite representative crash: kernel BUG in do_page_mkwrite, types: [BUG] the bug reproduces without the instrumentation disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed kconfig minimization: base=3877 full=7643 leaves diff=1995 split chunks (needed=false): <1995> split chunk #0 of len 1995 into 5 parts testing without sub-chunk 1/5 disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed testing commit 2ccdd1b13c591d306f0401d98dedc4bdcd02b421 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 9b950b2153b1a4b972df563048bc0a596afa169ee65ab270085ebd9de9deb4e5 all runs: crashed: kernel BUG in do_page_mkwrite representative crash: kernel BUG in do_page_mkwrite, types: [BUG] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [UBSAN KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed testing commit 2ccdd1b13c591d306f0401d98dedc4bdcd02b421 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 3f057eb64d37cd9114287c71a0326b7c5388da8aa52cedfaf04bd05c499ae5b8 all runs: OK false negative chance: 0.000 testing without sub-chunk 3/5 disabling configs for [LEAK UBSAN KASAN LOCKDEP ATOMIC_SLEEP HANG], they are not needed testing commit 2ccdd1b13c591d306f0401d98dedc4bdcd02b421 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 03c69de171fc1cc075966d56b6c8dd9268c0b36538beb5c84a4d83ebee2b2068 all runs: crashed: kernel BUG in do_page_mkwrite representative crash: kernel BUG in do_page_mkwrite, types: [BUG] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [HANG LEAK UBSAN KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit 2ccdd1b13c591d306f0401d98dedc4bdcd02b421 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 0dc5ab532c25e0df63b01bf0007e056ffda0e8251cdfd1e384d5eb4b79fea804 all runs: crashed: kernel BUG in do_page_mkwrite representative crash: kernel BUG in do_page_mkwrite, types: [BUG] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed testing commit 2ccdd1b13c591d306f0401d98dedc4bdcd02b421 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 8efff45ec2d38b09df05efab7ba26637f8e12d348d472f9216f1e4a25e8e80ef all runs: crashed: kernel BUG in do_page_mkwrite representative crash: kernel BUG in do_page_mkwrite, types: [BUG] the chunk can be dropped minimized to 399 configs; suspects: [6LOWPAN ARCH_ENABLE_MEMORY_HOTREMOVE ASUS_WMI CMA COMMON_CLK DAX DLM DRM DRM_BRIDGE 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_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_DEFERRED_IO FB_IO_HELPERS FB_NOTIFY FB_SYS_COPYAREA FB_SYS_FILLRECT FB_SYS_FOPS FB_SYS_HELPERS FB_SYS_HELPERS_DEFERRED FB_SYS_IMAGEBLIT FB_TILEBLITTING FB_VESA FB_VGA16 FB_VIRTUAL FDDI FIREWIRE FIREWIRE_NET FIREWIRE_OHCI FIREWIRE_SBP2 FONT_8x16 FONT_8x8 FONT_SUPPORT FRAMEBUFFER_CONSOLE FRAMEBUFFER_CONSOLE_DETECT_PRIMARY FRAMEBUFFER_CONSOLE_ROTATION FRONTSWAP FS_DAX FS_DAX_PMD FS_ENCRYPTION FS_ENCRYPTION_ALGS FS_VERITY FS_VERITY_BUILTIN_SIGNATURES FTL FUSE_DAX FUSE_FS FW_LOADER_COMPRESS FW_LOADER_PAGED_BUF FW_LOADER_SYSFS FW_LOADER_USER_HELPER FW_LOADER_USER_HELPER_FALLBACK GACT_PROB GARP GENERIC_PHY GET_FREE_REGION GFS2_FS GFS2_FS_LOCKING_DLM 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_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_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_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_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_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 [KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed testing release v6.4 testing commit 6995e2de6891c724bfeb2db33d7b87775f913ad1 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 54b6ac493a7e668e34a73865dfd1fbad74fa04aab80da0a8c326defc6bc93b3a all runs: crashed: kernel BUG in do_page_mkwrite representative crash: kernel BUG in do_page_mkwrite, types: [BUG] testing release v6.3 testing commit 457391b0380335d5e9a5babdec90ac53928b23b4 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 16dfd3a57784d81bb0729779d3c18a4863cafae80f43d4df91114e35ffecb66c all runs: OK false negative chance: 0.000 # git bisect start 6995e2de6891c724bfeb2db33d7b87775f913ad1 457391b0380335d5e9a5babdec90ac53928b23b4 Bisecting: 8012 revisions left to test after this (roughly 13 steps) [d42b1c47570eb2ed818dc3fe94b2678124af109d] Merge tag 'devicetree-for-6.4-1' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux testing commit d42b1c47570eb2ed818dc3fe94b2678124af109d gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: e2e55819ffb18a678915e4831f1d32cd88ccdf05f0301a711931111db8d8ccdc all runs: crashed: kernel BUG in do_page_mkwrite representative crash: kernel BUG in do_page_mkwrite, types: [BUG] # git bisect bad d42b1c47570eb2ed818dc3fe94b2678124af109d Bisecting: 4005 revisions left to test after this (roughly 12 steps) [088e0c188513b58a0056a488cf5b7df094a8a48a] Merge tag 'platform-drivers-x86-v6.4-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86 testing commit 088e0c188513b58a0056a488cf5b7df094a8a48a gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d76b8e7f004e4699c298b398b335f49886a5414389853d356e9a1fd7ec9cac76 all runs: crashed: kernel BUG in do_page_mkwrite representative crash: kernel BUG in do_page_mkwrite, types: [BUG] # git bisect bad 088e0c188513b58a0056a488cf5b7df094a8a48a Bisecting: 2178 revisions left to test after this (roughly 11 steps) [736b378b29d89c8c3567fa4b2e948be5568aebb8] Merge tag 'slab-for-6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab testing commit 736b378b29d89c8c3567fa4b2e948be5568aebb8 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: af23ccdef0a7537cd0241e278937068d632a861387598317dbebd92e0a31edfb all runs: OK false negative chance: 0.000 # git bisect good 736b378b29d89c8c3567fa4b2e948be5568aebb8 Bisecting: 1079 revisions left to test after this (roughly 10 steps) [52b113e968be66b57f792b2e2a9b8b77f382bd5f] Merge tag 'drm-misc-next-2023-04-06' of git://anongit.freedesktop.org/drm/drm-misc into drm-next testing commit 52b113e968be66b57f792b2e2a9b8b77f382bd5f gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 62627ca33aa6050dbda63fe38b479f980d148429dc93013c65e6b4a7991f2d1e all runs: crashed: kernel BUG in do_page_mkwrite representative crash: kernel BUG in do_page_mkwrite, types: [BUG] # git bisect bad 52b113e968be66b57f792b2e2a9b8b77f382bd5f Bisecting: 539 revisions left to test after this (roughly 9 steps) [c6265f5c2f502e442c4f339f121bedbc990c12e7] Merge tag 'drm-misc-next-2023-03-16' of git://anongit.freedesktop.org/drm/drm-misc into drm-next testing commit c6265f5c2f502e442c4f339f121bedbc990c12e7 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 4ee554a0c4118dfa13c41b410cd041b925929c33bc4d7bc5d3fa19b7aad36a1f all runs: OK false negative chance: 0.000 # git bisect good c6265f5c2f502e442c4f339f121bedbc990c12e7 Bisecting: 269 revisions left to test after this (roughly 8 steps) [b2cfec52feb3bb737c4b65018ef4bfe9789e4be8] drm: bridge: samsung-dsim: Add i.MX8M Plus support testing commit b2cfec52feb3bb737c4b65018ef4bfe9789e4be8 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 416641cf2552932fd1bf3be326edf1adeef0390723fc35d29a50e5adde1a650c all runs: crashed: kernel BUG in do_page_mkwrite representative crash: kernel BUG in do_page_mkwrite, types: [BUG] # git bisect bad b2cfec52feb3bb737c4b65018ef4bfe9789e4be8 Bisecting: 142 revisions left to test after this (roughly 7 steps) [d36d68fd1925d33066d52468b7c7c6aca6521248] Merge tag 'drm-habanalabs-next-2023-03-20' of https://git.kernel.org/pub/scm/linux/kernel/git/ogabbay/linux into drm-next testing commit d36d68fd1925d33066d52468b7c7c6aca6521248 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 7b458739a5742dfa2592e51ed7ede5a6a1c0db5e4aa3ed0653256be2ebf2695c all runs: OK false negative chance: 0.000 # git bisect good d36d68fd1925d33066d52468b7c7c6aca6521248 Bisecting: 77 revisions left to test after this (roughly 6 steps) [883631771038d1b0c10c0929e31bbd5ffb5e682c] drm/i915/mtl: Add HDCP GSC interface testing commit 883631771038d1b0c10c0929e31bbd5ffb5e682c gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 60536f781a60d195d6c3907439042ad57e47b3ae225e029fddc21e20fd128b56 all runs: OK false negative chance: 0.000 # git bisect good 883631771038d1b0c10c0929e31bbd5ffb5e682c Bisecting: 38 revisions left to test after this (roughly 5 steps) [ed8f4e1002781c47813e4e2b37ad15b927fd8b67] drm/bridge: display-connector: Use dev_err_probe() testing commit ed8f4e1002781c47813e4e2b37ad15b927fd8b67 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: e6ba7ae34b4e562d2d9ed36628ade828a0be7f3bc4518aaae4458758f486ba78 all runs: OK false negative chance: 0.000 # git bisect good ed8f4e1002781c47813e4e2b37ad15b927fd8b67 Bisecting: 19 revisions left to test after this (roughly 4 steps) [2c5c13efc43630071977377877bbba5353e69cc4] drm: rcar-du: Disable alpha blending for DU planes used with VSP testing commit 2c5c13efc43630071977377877bbba5353e69cc4 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 4db0034a0dfaca5e28e2166d2f12220101a583a74a0626344bcf551569baa54a all runs: crashed: kernel BUG in do_page_mkwrite representative crash: kernel BUG in do_page_mkwrite, types: [BUG] # git bisect bad 2c5c13efc43630071977377877bbba5353e69cc4 Bisecting: 9 revisions left to test after this (roughly 3 steps) [b9c93f4ec737bbc6b6601284df3a14814feb53fe] drm/fbdev-generic: Rename symbols testing commit b9c93f4ec737bbc6b6601284df3a14814feb53fe gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: f8f868294e3b6f6b7091e730054585e9228f7e59922509cccb633e5d4ec9bfe6 all runs: crashed: kernel BUG in do_page_mkwrite representative crash: kernel BUG in do_page_mkwrite, types: [BUG] # git bisect bad b9c93f4ec737bbc6b6601284df3a14814feb53fe Bisecting: 4 revisions left to test after this (roughly 2 steps) [6a4fef21816be4bc818905e07d47e0c20738e164] drm/fb-helper: Export drm_fb_helper_release_info() testing commit 6a4fef21816be4bc818905e07d47e0c20738e164 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 0200f8f2f2201e263b4258376f411ce2f054cc10f90c800e81290fd08522ba5b all runs: crashed: kernel BUG in do_page_mkwrite representative crash: kernel BUG in do_page_mkwrite, types: [BUG] # git bisect bad 6a4fef21816be4bc818905e07d47e0c20738e164 Bisecting: 1 revision left to test after this (roughly 1 step) [a5b44c4adb1699661d22e5152fb26885f30a2e4c] drm/fbdev-generic: Always use shadow buffering testing commit a5b44c4adb1699661d22e5152fb26885f30a2e4c gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 655708710e2f0825eb8ba388ece427eead0033627a978655f3289b35a21c5545 all runs: crashed: kernel BUG in do_page_mkwrite representative crash: kernel BUG in do_page_mkwrite, types: [BUG] # git bisect bad a5b44c4adb1699661d22e5152fb26885f30a2e4c Bisecting: 0 revisions left to test after this (roughly 0 steps) [db8496d0b50519540e1ee50f7e209b3a536ed671] drm: bridge: simple-bridge: Use dev_err_probe() testing commit db8496d0b50519540e1ee50f7e209b3a536ed671 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 67b9166d3c0bd3ea915cfbcb761172910980966d4ee1990665dfabb6abb4a27c all runs: OK false negative chance: 0.000 # git bisect good db8496d0b50519540e1ee50f7e209b3a536ed671 a5b44c4adb1699661d22e5152fb26885f30a2e4c is the first bad commit commit a5b44c4adb1699661d22e5152fb26885f30a2e4c Author: Thomas Zimmermann Date: Mon Mar 20 16:07:44 2023 +0100 drm/fbdev-generic: Always use shadow buffering Remove all codepaths that implement fbdev output directly on GEM buffers. Always allocate a shadow buffer in system memory and set up deferred I/O for mmap. The fbdev code that operated directly on GEM buffers was used by drivers based on GEM DMA helpers. Those drivers have been migrated to use fbdev-dma, a dedicated fbdev emulation for DMA memory. All remaining users of fbdev-generic require shadow buffering. Memory management of the remaining callers uses TTM, GEM SHMEM helpers or a variant of GEM DMA helpers that is incompatible with fbdev-dma. Therefore remove the unused codepaths from fbdev-generic and simplify the code. Using a shadow buffer with deferred I/O is probably the best case for most remaining callers. Some of the TTM-based drivers might benefit from a dedicated fbdev emulation that operates directly on the driver's video memory. Signed-off-by: Thomas Zimmermann Reviewed-by: Javier Martinez Canillas Acked-by: Zack Rusin Tested-by: Sui Jingfeng Link: https://patchwork.freedesktop.org/patch/msgid/20230320150751.20399-2-tzimmermann@suse.de drivers/gpu/drm/drm_fbdev_generic.c | 184 ++++++------------------------------ 1 file changed, 30 insertions(+), 154 deletions(-) accumulated error probability: 0.00 culprit signature: 655708710e2f0825eb8ba388ece427eead0033627a978655f3289b35a21c5545 parent signature: 67b9166d3c0bd3ea915cfbcb761172910980966d4ee1990665dfabb6abb4a27c revisions tested: 23, total time: 4h5m47.604167502s (build: 1h52m3.997861975s, test: 1h56m12.142224848s) first bad commit: a5b44c4adb1699661d22e5152fb26885f30a2e4c drm/fbdev-generic: Always use shadow buffering recipients (to): ["javierm@redhat.com" "suijingfeng@loongson.cn" "tzimmermann@suse.de" "zackr@vmware.com"] recipients (cc): [] crash: kernel BUG in do_page_mkwrite drm_fbdev_generic_setup+0x85/0x140 drivers/gpu/drm/drm_fbdev_generic.c:326 vkms_create drivers/gpu/drm/vkms/vkms_drv.c:204 [inline] vkms_init+0x23e/0x2a0 drivers/gpu/drm/vkms/vkms_drv.c:230 do_one_initcall+0x8f/0x2d0 init/main.c:1306 do_initcall_level init/main.c:1379 [inline] do_initcalls init/main.c:1395 [inline] do_basic_setup init/main.c:1414 [inline] kernel_init_freeable+0x275/0x460 init/main.c:1634 kernel_init+0x15/0x190 init/main.c:1522 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 page_owner free stack trace missing ------------[ cut here ]------------ kernel BUG at mm/memory.c:2938! invalid opcode: 0000 [#1] PREEMPT SMP CPU: 0 PID: 2513 Comm: syz-executor.0 Not tainted 6.3.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023 RIP: 0010:do_page_mkwrite+0xfc/0x200 mm/memory.c:2938 Code: 24 f7 c2 00 00 01 00 74 ae 49 8b 54 24 48 48 8d 42 ff 83 e2 01 49 0f 44 c4 eb 9c 48 c7 c6 28 80 b6 82 4c 89 e7 e8 24 77 ff ff <0f> 0b bd 02 00 00 00 5b 89 e8 5d 41 5c 41 5d c3 2e 2e 2e 31 c0 49 RSP: 0000:ffffc90000f3bd38 EFLAGS: 00010286 RAX: 0000000000000000 RBX: ffffc90000f3be18 RCX: ffffc90000f3bccc RDX: 0000000000000001 RSI: ffffffff82abdfe1 RDI: ffffffff82adfe95 RBP: 0000000000000200 R08: 0000000000000000 R09: ffffffff82efafc0 R10: ffffc90000f3bbc0 R11: ffffffff82fdb008 R12: ffffea000405aec0 R13: 0000000000000a55 R14: 0000000000000a55 R15: fff000003fffffff FS: 0000555555f8c480(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000000 CR3: 0000000101f64000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: wp_page_shared mm/memory.c:3274 [inline] do_wp_page+0xa5/0x1020 mm/memory.c:3356 handle_pte_fault mm/memory.c:4927 [inline] __handle_mm_fault+0xa46/0x12c0 mm/memory.c:5051 handle_mm_fault+0x11f/0x300 mm/memory.c:5197 do_user_addr_fault arch/x86/mm/fault.c:1407 [inline] handle_page_fault arch/x86/mm/fault.c:1498 [inline] exc_page_fault+0x1cd/0x830 arch/x86/mm/fault.c:1554 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570 RIP: 0033:0x7f074c65db98 Code: fc 89 37 c3 c5 fa 6f 06 c5 fa 6f 4c 16 f0 c5 fa 7f 07 c5 fa 7f 4c 17 f0 c3 66 0f 1f 84 00 00 00 00 00 48 8b 4c 16 f8 48 8b 36 <48> 89 37 48 89 4c 17 f8 c3 c5 fe 6f 54 16 e0 c5 fe 6f 5c 16 c0 c5 RSP: 002b:00007ffe4bd511b8 EFLAGS: 00010202 RAX: 0000000020000000 RBX: 00007ffe4bd512c8 RCX: 003062662f766564 RDX: 0000000000000009 RSI: 3062662f7665642f RDI: 0000000020000000 RBP: 0000000000000032 R08: 00007f074c600000 R09: 00007f074c79bf8c R10: 00007ffe4bd512f0 R11: 0000000000000246 R12: 00007f074c2004c8 R13: fffffffffffffffe R14: 00007f074c200000 R15: 00007f074c2004d0 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:do_page_mkwrite+0xfc/0x200 mm/memory.c:2938 Code: 24 f7 c2 00 00 01 00 74 ae 49 8b 54 24 48 48 8d 42 ff 83 e2 01 49 0f 44 c4 eb 9c 48 c7 c6 28 80 b6 82 4c 89 e7 e8 24 77 ff ff <0f> 0b bd 02 00 00 00 5b 89 e8 5d 41 5c 41 5d c3 2e 2e 2e 31 c0 49 RSP: 0000:ffffc90000f3bd38 EFLAGS: 00010286 RAX: 0000000000000000 RBX: ffffc90000f3be18 RCX: ffffc90000f3bccc RDX: 0000000000000001 RSI: ffffffff82abdfe1 RDI: ffffffff82adfe95 RBP: 0000000000000200 R08: 0000000000000000 R09: ffffffff82efafc0 R10: ffffc90000f3bbc0 R11: ffffffff82fdb008 R12: ffffea000405aec0 R13: 0000000000000a55 R14: 0000000000000a55 R15: fff000003fffffff FS: 0000555555f8c480(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000000 CR3: 0000000101f64000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400