ci starts bisection 2023-10-23 22:34:42.535466711 +0000 UTC m=+94.817181237 bisecting cause commit starting from e8361b005d7c92997d12f2b85a9e4a525738bd9d building syzkaller on 989a36876f0087559f7926ed590d6e6302952edf ensuring issue is reproducible on original commit e8361b005d7c92997d12f2b85a9e4a525738bd9d testing commit e8361b005d7c92997d12f2b85a9e4a525738bd9d gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 162f544fac588fbb9a1222c95383c71cf9b6c1951a4f95e188b11090da9a3ffb all runs: crashed: divide error in iommufd_test representative crash: divide error in iommufd_test, types: [UNKNOWN] check whether we can drop unnecessary instrumentation disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed testing commit e8361b005d7c92997d12f2b85a9e4a525738bd9d gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c0ad4332d8a6990e770aecda43224246db18173318fc0c33fa76e4126cbaffe2 all runs: crashed: divide error in iommufd_test representative crash: divide error in iommufd_test, types: [UNKNOWN] the bug reproduces without the instrumentation disabling configs for [HANG LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed kconfig minimization: base=3938 full=7719 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 [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP HANG], they are not needed testing commit e8361b005d7c92997d12f2b85a9e4a525738bd9d gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 25746604a80b59914b54cc65bdbae6c64ec98ba7b24b4b35a85c58d3584a5064 all runs: crashed: divide error in iommufd_test representative crash: divide error in iommufd_test, 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 e8361b005d7c92997d12f2b85a9e4a525738bd9d gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 9a54589c2b77d8c4631365e9a0dff8f64bae7a5c806ea7b58bd471f758b396a9 all runs: OK false negative chance: 0.000 testing without sub-chunk 3/5 disabling configs for [HANG LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit e8361b005d7c92997d12f2b85a9e4a525738bd9d gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 3fa60d7edd91cd6e8c3e8428c580663ea18b155cfa0d07a00419697d51b52ce5 all runs: crashed: divide error in iommufd_test representative crash: divide error in iommufd_test, 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 e8361b005d7c92997d12f2b85a9e4a525738bd9d gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 7c4b509f4defb4617676e55548ea39688fcdd2e82ae5dd969be4aef8e4a536ad all runs: crashed: divide error in iommufd_test representative crash: divide error in iommufd_test, types: [UNKNOWN] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed testing commit e8361b005d7c92997d12f2b85a9e4a525738bd9d gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 7af3ade1311435d67d59e942d6349b815c7657ad4c821f6cd6e00909641b30ed run #0: infra problem: create image operation failed: &{Code:ZONE_RESOURCE_POOL_EXHAUSTED_WITH_DETAILS ErrorDetails:[0xc003bb0780 0xc003bb0870 0xc003bb0910] Location: Message:The zone 'projects/syzkaller/zones/us-central1-c' does not have enough resources available to fulfill the request. '(resource type:compute)'. ForceSendFields:[] NullFields:[]}. run #1: crashed: divide error in iommufd_test run #2: crashed: divide error in iommufd_test run #3: crashed: divide error in iommufd_test run #4: crashed: divide error in iommufd_test run #5: crashed: divide error in iommufd_test run #6: crashed: divide error in iommufd_test run #7: crashed: divide error in iommufd_test run #8: crashed: divide error in iommufd_test run #9: crashed: divide error in iommufd_test representative crash: divide error in iommufd_test, types: [UNKNOWN] 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_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_CORE FB_DEFERRED_IO FB_DEVICE FB_IOMEM_FOPS FB_IOMEM_HELPERS FB_NOTIFY FB_SYSMEM_HELPERS FB_SYSMEM_HELPERS_DEFERRED FB_SYS_COPYAREA FB_SYS_FILLRECT FB_SYS_FOPS FB_SYS_IMAGEBLIT FB_TILEBLITTING FB_VESA FB_VGA16 FB_VIRTUAL FDDI FIREWIRE FIREWIRE_NET FIREWIRE_OHCI FIREWIRE_SBP2 FONT_8x16 FONT_8x8 FONT_SUPPORT FRAMEBUFFER_CONSOLE FRAMEBUFFER_CONSOLE_DETECT_PRIMARY FRAMEBUFFER_CONSOLE_ROTATION FS_DAX FS_DAX_PMD FS_ENCRYPTION FS_ENCRYPTION_ALGS FS_VERITY FS_VERITY_BUILTIN_SIGNATURES FTL FUSE_DAX FUSE_FS FW_LOADER_COMPRESS FW_LOADER_PAGED_BUF FW_LOADER_SYSFS FW_LOADER_USER_HELPER FW_LOADER_USER_HELPER_FALLBACK GACT_PROB GARP GENERIC_PHY GET_FREE_REGION GFS2_FS GFS2_FS_LOCKING_DLM 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_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 [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG KASAN], they are not needed picked [v6.5 v6.4 v6.3 v6.1 v5.19 v5.17 v5.15 v5.13 v5.10 v5.7 v5.4 v5.1 v4.19] out of 28 release tags testing release v6.5 testing commit 2dde18cd1d8fac735875f2e4987f11817cc0bc2c gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 3b07aa540e13e09cc8de204cab430ac73f861aea2a2695b5d0372a00eef54a55 all runs: OK false negative chance: 0.000 # git bisect start e8361b005d7c92997d12f2b85a9e4a525738bd9d 2dde18cd1d8fac735875f2e4987f11817cc0bc2c Bisecting: 14592 revisions left to test after this (roughly 14 steps) [4ee22162ae5fa34ac70e4ae06330395409921c5c] Merge tag 'block-6.6-2023-10-12' of git://git.kernel.dk/linux testing commit 4ee22162ae5fa34ac70e4ae06330395409921c5c gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 9ba860e9cbf5b00081906539be2fb9b96db5211c8a4e15ae377fd91e32d4cc4c all runs: OK false negative chance: 0.000 # git bisect good 4ee22162ae5fa34ac70e4ae06330395409921c5c Bisecting: 7399 revisions left to test after this (roughly 13 steps) [96a11255524cdaafe7abaf6b332c54657da64250] Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma.git testing commit 96a11255524cdaafe7abaf6b332c54657da64250 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 139de3f06b5700e1bb7c8e8235c1b12c2ebaa29e69d5f40331d13b1c2a802a98 all runs: OK false negative chance: 0.000 # git bisect good 96a11255524cdaafe7abaf6b332c54657da64250 Bisecting: 3830 revisions left to test after this (roughly 12 steps) [bbee2d2f0ce1050383ee1c57369c164c5f1b4701] Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap.git testing commit bbee2d2f0ce1050383ee1c57369c164c5f1b4701 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b381a58a2cae782d4166d04cab842f3e7fecf738b6c15300bd536b9526ff2cce all runs: OK false negative chance: 0.000 # git bisect good bbee2d2f0ce1050383ee1c57369c164c5f1b4701 Bisecting: 1888 revisions left to test after this (roughly 11 steps) [9b6938265d402cec46105d7e9693de69157b409a] Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86.git testing commit 9b6938265d402cec46105d7e9693de69157b409a gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 360d6ebd8022f4f31bf6dc70c4e60d6993cbae584a0bf0b2bf073f01f7fc1f35 all runs: OK false negative chance: 0.000 # git bisect good 9b6938265d402cec46105d7e9693de69157b409a Bisecting: 947 revisions left to test after this (roughly 10 steps) [b49ca54f5124c7b32f87624df344ebe90be4b0c9] Merge branch 'staging-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging.git testing commit b49ca54f5124c7b32f87624df344ebe90be4b0c9 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: aba7f639e649db9f038f6656a73bd1fb85ad53bd5fbcfb7333bb4ca0dca2b214 all runs: OK false negative chance: 0.000 # git bisect good b49ca54f5124c7b32f87624df344ebe90be4b0c9 Bisecting: 509 revisions left to test after this (roughly 9 steps) [586cc4281b5c32bd6bb0d314a5cc4d25579cf674] Merge branch 'gpio/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux.git testing commit 586cc4281b5c32bd6bb0d314a5cc4d25579cf674 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 79ca5612aacf3ad6506e58786b4e0586c2f5180d963245c431d261b90f0c2faa all runs: OK false negative chance: 0.000 # git bisect good 586cc4281b5c32bd6bb0d314a5cc4d25579cf674 Bisecting: 281 revisions left to test after this (roughly 8 steps) [cd95850d5da43ab9b46857da2bd04ab322e60333] Merge branch 'kunit' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest.git testing commit cd95850d5da43ab9b46857da2bd04ab322e60333 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d1e25dc1357f1c4f6e9280608fc7808accdcc9e73d2edcbeb6220395db62c0cd all runs: OK false negative chance: 0.000 # git bisect good cd95850d5da43ab9b46857da2bd04ab322e60333 Bisecting: 145 revisions left to test after this (roughly 7 steps) [e157f1b948b4e39cc063d00baa9919955cfcb9ec] Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/mic/linux.git testing commit e157f1b948b4e39cc063d00baa9919955cfcb9ec gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 0b003e14e4273208be422d65052c34d818d1435552d1a14e41ee6943f63a9246 all runs: OK false negative chance: 0.000 # git bisect good e157f1b948b4e39cc063d00baa9919955cfcb9ec Bisecting: 81 revisions left to test after this (roughly 6 steps) [b3c898752b653c7aa25b0a513072ba39c04ad58e] Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/pateldipen1984/linux.git testing commit b3c898752b653c7aa25b0a513072ba39c04ad58e gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 5685b8ac63776e820d8b4c91aa7470b4903e0abd0af9081b588ce2e66459cab6 all runs: OK false negative chance: 0.000 # git bisect good b3c898752b653c7aa25b0a513072ba39c04ad58e Bisecting: 40 revisions left to test after this (roughly 5 steps) [cfa36f889f232eb32e15b4ea6a688a5c5a9d19e9] sparc: Annotate struct cpuinfo_tree with __counted_by testing commit cfa36f889f232eb32e15b4ea6a688a5c5a9d19e9 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d8f6f85ec22c5e61da70c825881fb9b34363c5a21f2350cbd24c10fa2d271e6e all runs: OK false negative chance: 0.000 # git bisect good cfa36f889f232eb32e15b4ea6a688a5c5a9d19e9 Bisecting: 20 revisions left to test after this (roughly 4 steps) [1205aa47a67ec161d98e0abcd1da26ce8f43cd84] iommu/amd: Add domain_alloc_user based domain allocation testing commit 1205aa47a67ec161d98e0abcd1da26ce8f43cd84 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 5c201ce011c036de774ad72919da433dc4275ecee44f4d1630c6ae8d98d096ba all runs: OK false negative chance: 0.000 # git bisect good 1205aa47a67ec161d98e0abcd1da26ce8f43cd84 Bisecting: 10 revisions left to test after this (roughly 3 steps) [8d7af820310cb547c4cb7bdc321c161833eba57f] MAINTAINERS: Include stackleak paths in hardening entry testing commit 8d7af820310cb547c4cb7bdc321c161833eba57f gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d945967b30fa9b184ea1714df0a49f15b298b829cd801c5d969200c263a09d64 all runs: OK false negative chance: 0.000 # git bisect good 8d7af820310cb547c4cb7bdc321c161833eba57f Bisecting: 5 revisions left to test after this (roughly 3 steps) [a0a6ed6c08527c21b21db5b985fb398a3532e53c] iommufd/selftest: Test IOMMU_HWPT_SET_DIRTY_TRACKING testing commit a0a6ed6c08527c21b21db5b985fb398a3532e53c gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 32bc2cedd81d48324e1b12f6de5bd1d15f6d6f6efc1b0879387ec098fb46d6ed run #0: infra problem: create image operation failed: &{Code:ZONE_RESOURCE_POOL_EXHAUSTED_WITH_DETAILS ErrorDetails:[0xc00420cd20 0xc00420ce10 0xc00420ceb0] Location: Message:The zone 'projects/syzkaller/zones/us-central1-c' does not have enough resources available to fulfill the request. '(resource type:compute)'. ForceSendFields:[] NullFields:[]}. run #1: infra problem: create image operation failed: &{Code:ZONE_RESOURCE_POOL_EXHAUSTED_WITH_DETAILS ErrorDetails:[0xc002530730 0xc002530820 0xc0025308c0] Location: Message:The zone 'projects/syzkaller/zones/us-central1-c' does not have enough resources available to fulfill the request. '(resource type:compute)'. ForceSendFields:[] NullFields:[]}. 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 good a0a6ed6c08527c21b21db5b985fb398a3532e53c Bisecting: 2 revisions left to test after this (roughly 2 steps) [dc7ce51ff88569b95d8764b0cf76405511f693d5] iommufd/selftest: Test IOMMU_HWPT_GET_DIRTY_BITMAP_NO_CLEAR flag testing commit dc7ce51ff88569b95d8764b0cf76405511f693d5 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: cd44c04ab7cf815d4bac7336d7a41b25f6954d27ef81abffbb6c2cfa5627de90 all runs: crashed: divide error in iommufd_test representative crash: divide error in iommufd_test, types: [UNKNOWN] # git bisect bad dc7ce51ff88569b95d8764b0cf76405511f693d5 Bisecting: 0 revisions left to test after this (roughly 1 step) [1d2ac3b6448640cbf400379813731d9cf4717721] iommufd/selftest: Test out_capabilities in IOMMU_GET_HW_INFO testing commit 1d2ac3b6448640cbf400379813731d9cf4717721 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 05bb37f43e9ff8f7f30329ced72717bca34c44f47503634a57c55ca3b38504a1 all runs: crashed: divide error in iommufd_test representative crash: divide error in iommufd_test, types: [UNKNOWN] # git bisect bad 1d2ac3b6448640cbf400379813731d9cf4717721 Bisecting: 0 revisions left to test after this (roughly 0 steps) [5e054083ce6929b567c6aadbf8bf627b0f028353] iommufd/selftest: Test IOMMU_HWPT_GET_DIRTY_BITMAP testing commit 5e054083ce6929b567c6aadbf8bf627b0f028353 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 5d56a0a6575f5ac749fbbe997f90263ff952e77cfaaad575bc37261e8bd6247f all runs: crashed: divide error in iommufd_test representative crash: divide error in iommufd_test, types: [UNKNOWN] # git bisect bad 5e054083ce6929b567c6aadbf8bf627b0f028353 5e054083ce6929b567c6aadbf8bf627b0f028353 is the first bad commit commit 5e054083ce6929b567c6aadbf8bf627b0f028353 Author: Joao Martins Date: Fri Oct 20 23:28:02 2023 +0100 iommufd/selftest: Test IOMMU_HWPT_GET_DIRTY_BITMAP Add a new test ioctl for simulating the dirty IOVAs in the mock domain, and implement the mock iommu domain ops that get the dirty tracking supported. The selftest exercises the usual main workflow of: 1) Setting dirty tracking from the iommu domain 2) Read and clear dirty IOPTEs Different fixtures will test different IOVA range sizes, that exercise corner cases of the bitmaps. Link: https://lore.kernel.org/r/20231020222804.21850-17-joao.m.martins@oracle.com Signed-off-by: Joao Martins Signed-off-by: Jason Gunthorpe drivers/iommu/iommufd/iommufd_test.h | 9 +++ drivers/iommu/iommufd/selftest.c | 92 +++++++++++++++++++-- tools/testing/selftests/iommu/iommufd.c | 97 +++++++++++++++++++++++ tools/testing/selftests/iommu/iommufd_utils.h | 110 ++++++++++++++++++++++++++ 4 files changed, 303 insertions(+), 5 deletions(-) accumulated error probability: 0.00 culprit signature: 5d56a0a6575f5ac749fbbe997f90263ff952e77cfaaad575bc37261e8bd6247f parent signature: 32bc2cedd81d48324e1b12f6de5bd1d15f6d6f6efc1b0879387ec098fb46d6ed revisions tested: 24, total time: 8h37m4.990256327s (build: 2h8m18.99402368s, test: 3h5m17.005428405s) first bad commit: 5e054083ce6929b567c6aadbf8bf627b0f028353 iommufd/selftest: Test IOMMU_HWPT_GET_DIRTY_BITMAP recipients (to): ["iommu@lists.linux.dev" "jgg@nvidia.com" "jgg@ziepe.ca" "joao.m.martins@oracle.com" "joro@8bytes.org" "kevin.tian@intel.com" "linux-kselftest@vger.kernel.org" "shuah@kernel.org" "will@kernel.org"] recipients (cc): ["linux-kernel@vger.kernel.org" "robin.murphy@arm.com"] crash: divide error in iommufd_test divide error: 0000 [#1] PREEMPT SMP CPU: 1 PID: 2547 Comm: syz-executor.0 Not tainted 6.6.0-rc2-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023 RIP: 0010:iommufd_test_dirty drivers/iommu/iommufd/selftest.c:1093 [inline] RIP: 0010:iommufd_test+0x7a/0x1200 drivers/iommu/iommufd/selftest.c:1198 Code: b8 08 00 00 83 f8 0d 0f 85 cc 04 00 00 49 8b 6a 18 31 d2 4c 89 14 24 49 8b 5a 28 49 8b 4a 30 4d 8b 72 20 48 89 e8 41 8b 72 08 <48> f7 f3 48 85 d2 48 89 4c 24 18 0f 85 93 0c 00 00 31 d2 4c 89 f0 RSP: 0018:ffffc90002167de8 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffc90002167e78 RBP: 0000000000000000 R08: ffff88810dad13c0 R09: ffffc90002167e78 R10: ffffc90002167e98 R11: 0000000000000001 R12: ffffc90002167e98 R13: 0000000000000048 R14: 0000000000000000 R15: 0000000000000000 FS: 00007ff8413726c0(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555556072da8 CR3: 000000010a3c8000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: iommufd_fops_ioctl+0x10f/0x1a0 drivers/iommu/iommufd/main.c:404 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:871 [inline] __se_sys_ioctl fs/ioctl.c:857 [inline] __x64_sys_ioctl+0x8b/0xc0 fs/ioctl.c:857 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0x80 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7ff84067cae9 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:00007ff8413720c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007ff84079bf80 RCX: 00007ff84067cae9 RDX: 0000000020000140 RSI: 0000000000003ba0 RDI: 0000000000000003 RBP: 00007ff8406c847a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000006 R14: 00007ff84079bf80 R15: 00007fffdc213eb8 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:iommufd_test_dirty drivers/iommu/iommufd/selftest.c:1093 [inline] RIP: 0010:iommufd_test+0x7a/0x1200 drivers/iommu/iommufd/selftest.c:1198 Code: b8 08 00 00 83 f8 0d 0f 85 cc 04 00 00 49 8b 6a 18 31 d2 4c 89 14 24 49 8b 5a 28 49 8b 4a 30 4d 8b 72 20 48 89 e8 41 8b 72 08 <48> f7 f3 48 85 d2 48 89 4c 24 18 0f 85 93 0c 00 00 31 d2 4c 89 f0 RSP: 0018:ffffc90002167de8 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffc90002167e78 RBP: 0000000000000000 R08: ffff88810dad13c0 R09: ffffc90002167e78 R10: ffffc90002167e98 R11: 0000000000000001 R12: ffffc90002167e98 R13: 0000000000000048 R14: 0000000000000000 R15: 0000000000000000 FS: 00007ff8413726c0(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555556072da8 CR3: 000000010a3c8000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: b8 08 00 00 83 mov $0x83000008,%eax 5: f8 clc 6: 0d 0f 85 cc 04 or $0x4cc850f,%eax b: 00 00 add %al,(%rax) d: 49 8b 6a 18 mov 0x18(%r10),%rbp 11: 31 d2 xor %edx,%edx 13: 4c 89 14 24 mov %r10,(%rsp) 17: 49 8b 5a 28 mov 0x28(%r10),%rbx 1b: 49 8b 4a 30 mov 0x30(%r10),%rcx 1f: 4d 8b 72 20 mov 0x20(%r10),%r14 23: 48 89 e8 mov %rbp,%rax 26: 41 8b 72 08 mov 0x8(%r10),%esi * 2a: 48 f7 f3 div %rbx <-- trapping instruction 2d: 48 85 d2 test %rdx,%rdx 30: 48 89 4c 24 18 mov %rcx,0x18(%rsp) 35: 0f 85 93 0c 00 00 jne 0xcce 3b: 31 d2 xor %edx,%edx 3d: 4c 89 f0 mov %r14,%rax