ci2 starts bisection 2025-04-20 13:34:23.551369516 +0000 UTC m=+230910.713096570 bisecting fixing commit since bb2281fb05e50108ce95c43ab7e701ee564565c8 building syzkaller on 831e3629115be4f5e68e6e0df3a5b07eed26daa4 ensuring issue is reproducible on original commit bb2281fb05e50108ce95c43ab7e701ee564565c8 testing commit bb2281fb05e50108ce95c43ab7e701ee564565c8 gcc compiler: Debian clang version 15.0.6, Debian LLD 15.0.6 kernel signature: 4f1df9020387e9a4210b2a9ecbc141bc7ac39fb0d2d69ad71421434b9d7897cd all runs: crashed: INFO: task hung in vfs_unlink representative crash: INFO: task hung in vfs_unlink, types: [HANG] check whether we can drop unnecessary instrumentation disabling configs for [UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP LEAK], they are not needed testing commit bb2281fb05e50108ce95c43ab7e701ee564565c8 gcc compiler: Debian clang version 15.0.6, Debian LLD 15.0.6 kernel signature: 6af3183e3ee0da5fd8f69876627bf0d27f12ed0b1999b5b38ac314b42303f722 all runs: crashed: INFO: task hung in vfs_unlink representative crash: INFO: task hung in vfs_unlink, types: [HANG] the bug reproduces without the instrumentation disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed kconfig minimization: base=4068 full=8254 leaves diff=2130 split chunks (needed=false): <2130> split chunk #0 of len 2130 into 5 parts testing without sub-chunk 1/5 disabling configs for [UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP LEAK], they are not needed testing commit bb2281fb05e50108ce95c43ab7e701ee564565c8 gcc compiler: Debian clang version 15.0.6, Debian LLD 15.0.6 kernel signature: 1278bcdb25adcc585403d010685c370f89c4a3e7c52c695f20943ddc34a88744 all runs: crashed: INFO: task hung in vfs_unlink representative crash: INFO: task hung in vfs_unlink, types: [HANG] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit bb2281fb05e50108ce95c43ab7e701ee564565c8 gcc compiler: Debian clang version 15.0.6, Debian LLD 15.0.6 failed building bb2281fb05e50108ce95c43ab7e701ee564565c8: ld.lld: error: undefined symbol: devm_drm_of_get_bridge testing without sub-chunk 3/5 disabling configs for [UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP LEAK], they are not needed testing commit bb2281fb05e50108ce95c43ab7e701ee564565c8 gcc compiler: Debian clang version 15.0.6, Debian LLD 15.0.6 kernel signature: ac47041862fdbbf569b842181ab2592e1354f6e7191f6aa3577b7d867d6f17bc all runs: crashed: INFO: task hung in vfs_unlink representative crash: INFO: task hung in vfs_unlink, types: [HANG] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit bb2281fb05e50108ce95c43ab7e701ee564565c8 gcc compiler: Debian clang version 15.0.6, Debian LLD 15.0.6 kernel signature: 62a59bc70a77adff6e03971c06270dbd7de83c4329755a8e683ba5faff28655a all runs: crashed: INFO: rcu detected stall in corrupted representative crash: INFO: rcu detected stall in corrupted, types: [HANG] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit bb2281fb05e50108ce95c43ab7e701ee564565c8 gcc compiler: Debian clang version 15.0.6, Debian LLD 15.0.6 kernel signature: 979d218d528bae456a94cc5eabb7c38a4908b330e029a00aac78669e293c23e1 all runs: crashed: INFO: rcu detected stall in corrupted representative crash: INFO: rcu detected stall in corrupted, types: [HANG] the chunk can be dropped minimized to 426 configs; suspects: [6LOWPAN ARCH_ENABLE_MEMORY_HOTREMOVE ASUS_WMI CHARGER_BQ24190 CMA COMMON_CLK DAX DLM DRM DRM_BRIDGE DRM_I915 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 DUMMY DVB_AF9013 DVB_AF9033 DVB_AS102 DVB_AS102_FE DVB_B2C2_FLEXCOP DVB_B2C2_FLEXCOP_USB DVB_CORE DVB_DIB3000MB DVB_DIB3000MC DVB_EC100 DVB_GP8PSK_FE DVB_RTL2830 DVB_RTL2832 DVB_RTL2832_SDR DVB_TEST_DRIVERS DVB_TTUSB_BUDGET DVB_TTUSB_DEC DVB_USB DVB_USB_A800 DVB_USB_AF9005 DVB_USB_AF9005_REMOTE DVB_USB_AF9015 DVB_USB_AF9035 DVB_USB_ANYSEE DVB_USB_AU6610 DVB_USB_AZ6007 DVB_USB_AZ6027 DVB_USB_CE6230 DVB_USB_CINERGY_T2 DVB_USB_CXUSB DVB_USB_CXUSB_ANALOG DVB_USB_DIB0700 DVB_USB_DIB3000MC DVB_USB_DIBUSB_MB DVB_USB_DIBUSB_MC DVB_USB_DIGITV DVB_USB_DTT200U DVB_USB_DTV5100 DVB_USB_DVBSKY DVB_USB_DW2102 DVB_USB_EC168 DVB_USB_GL861 DVB_USB_GP8PSK DVB_USB_LME2510 DVB_USB_M920X DVB_USB_MXL111SF DVB_USB_NOVA_T_USB2 DVB_USB_OPERA1 DVB_USB_PCTV452E DVB_USB_RTL28XXU DVB_USB_TECHNISAT_USB2 DVB_USB_TTUSB2 DVB_USB_UMT_010 DVB_USB_V2 DVB_USB_VP702X DVB_USB_VP7045 DVB_USB_ZD1301 DVB_VIDTV DVB_ZL10353 ECRYPT_FS ECRYPT_FS_MESSAGING EDAC 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 EXTCON_PTN5150 EXTCON_USBC_TUSB320 F2FS_CHECK_FS F2FS_FAULT_INJECTION F2FS_FS F2FS_FS_COMPRESSION F2FS_FS_LZ4 F2FS_FS_LZ4HC F2FS_FS_LZO F2FS_FS_LZORLE F2FS_FS_POSIX_ACL F2FS_FS_SECURITY F2FS_FS_XATTR F2FS_FS_ZSTD F2FS_STAT_FS FANOTIFY FANOTIFY_ACCESS_PERMISSIONS FB FB_CFB_COPYAREA FB_CFB_FILLRECT FB_CFB_IMAGEBLIT FB_CORE FB_DEFERRED_IO FB_DEVICE FB_IOMEM_FOPS FB_IOMEM_HELPERS FB_NOTIFY FB_SYSMEM_FOPS FB_SYSMEM_HELPERS FB_SYSMEM_HELPERS_DEFERRED FB_SYS_COPYAREA FB_SYS_FILLRECT FB_SYS_IMAGEBLIT FB_TILEBLITTING FB_VESA FB_VGA16 FB_VIRTUAL FDDI FIREWIRE FIREWIRE_NET FIREWIRE_OHCI FIREWIRE_SBP2 FONT_8x16 FONT_8x8 FONT_SUPPORT FRAMEBUFFER_CONSOLE FRAMEBUFFER_CONSOLE_DETECT_PRIMARY FRAMEBUFFER_CONSOLE_ROTATION FS_DAX FS_DAX_PMD FS_ENCRYPTION FS_ENCRYPTION_ALGS FS_STACK FS_VERITY FS_VERITY_BUILTIN_SIGNATURES FTL FUSE_DAX FUSE_FS FW_LOADER_COMPRESS FW_LOADER_PAGED_BUF FW_LOADER_SYSFS FW_LOADER_USER_HELPER FW_LOADER_USER_HELPER_FALLBACK GACT_PROB GARP GENDWARFKSYMS GENERIC_PHY GENERIC_PTDUMP GET_FREE_REGION GFS2_FS GFS2_FS_LOCKING_DLM GNSS GNSS_USB GOOGLE_COREBOOT_TABLE GOOGLE_FIRMWARE GOOGLE_MEMCONSOLE GOOGLE_MEMCONSOLE_COREBOOT GOOGLE_VPD GPIOLIB GPIOLIB_IRQCHIP GPIO_ACPI GPIO_DLN2 GPIO_LJCA GPIO_VIPERBOARD GREENASIA_FF GREYBUS GREYBUS_BRIDGED_PHY GREYBUS_ES2 GREYBUS_HID GREYBUS_USB 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_EISA HAVE_KVM_CPU_RELAX_INTERCEPT HAVE_KVM_DIRTY_RING HAVE_KVM_DIRTY_RING_ACQ_REL HAVE_KVM_DIRTY_RING_TSO HAVE_KVM_IRQCHIP HAVE_KVM_IRQ_BYPASS HAVE_KVM_IRQ_ROUTING HAVE_KVM_MSI HAVE_KVM_NO_POLL HAVE_KVM_PFNCACHE HAVE_KVM_PM_NOTIFIER HAVE_KVM_READONLY_MEM HAVE_SCHED_AVG_IRQ HDLC HDLC_CISCO HDLC_FR HDLC_PPP HDLC_RAW HDLC_RAW_ETH HDLC_X25 HDMI HFSPLUS_FS HFS_FS HID_ACCUTOUCH HID_ACRUX HID_ACRUX_FF HID_ALPS HID_APPLEIR HID_ASUS HID_AUREAL HID_BATTERY_STRENGTH HID_BETOP_FF HID_BIGBEN_FF HID_CMEDIA HID_CORSAIR HID_COUGAR HID_CP2112 HID_CREATIVE_SB0540 HID_ELAN HID_ELECOM HID_ELO HID_EMS_FF HID_EVISION HID_FT260 HID_GEMBIRD HID_GFRM HID_GLORIOUS HID_GOOGLE_STADIA_FF HID_GREENASIA HID_GT683R HID_HOLTEK HID_ICADE HID_JABRA HID_KEYTOUCH HID_KYE HID_LCPOWER HID_LED HID_LENOVO HID_LETSKETCH HID_LOGITECH HID_LOGITECH_DJ HID_LOGITECH_HIDPP HID_MACALLY HID_MAGICMOUSE HID_MALTRON HID_MAYFLASH HID_MCP2200 HID_MCP2221 HID_MEGAWORLD_FF HID_MULTITOUCH HID_NTI HID_ORTEK HID_PENMOUNT HID_PICOLCD HID_PICOLCD_BACKLIGHT HID_PICOLCD_CIR HID_PICOLCD_FB HID_PICOLCD_LCD HID_PICOLCD_LEDS HID_PLANTRONICS HID_PRIMAX HID_PRODIKEYS HID_PXRC HID_RAZER HID_RETRODE HID_RMI HID_ROCCAT HID_SAITEK HID_SEMITEK HID_SENSOR_ACCEL_3D HID_SENSOR_ALS HID_SENSOR_CUSTOM_INTEL_HINGE HID_SENSOR_CUSTOM_SENSOR HID_SENSOR_DEVICE_ROTATION HID_SENSOR_GYRO_3D HID_SENSOR_HUB HID_SENSOR_HUMIDITY HID_SENSOR_IIO_COMMON HID_SENSOR_IIO_TRIGGER HID_SENSOR_INCLINOMETER_3D HID_SENSOR_MAGNETOMETER_3D HID_SENSOR_PRESS HID_SENSOR_PROX HID_SENSOR_TEMP HID_SIGMAMICRO HID_SPEEDLINK HID_STEELSERIES HID_THINGM HID_TIVO HID_TOPRE HID_TWINHAN HID_U2FZERO HID_UCLOGIC HID_UDRAW_PS3 HID_VIEWSONIC HID_VIVALDI HID_VIVALDI_COMMON HID_VRC2 HID_WACOM HID_WALTOP HID_WIIMOTE HID_XIAOMI HID_XINMO HID_ZYDACRON HMM_MIRROR HOLTEK_FF HOTPLUG_PCI_PCIE HPET_MMAP HPET_MMAP_DEFAULT HPFS_FS I2C_ALGOBIT I2C_CHARDEV I2C_CP2615 I2C_DESIGNWARE_CORE I2C_DESIGNWARE_PLATFORM I2C_DIOLAN_U2C I2C_DLN2 I2C_HID_ACPI I2C_HID_CORE I2C_HID_OF I2C_LJCA I2C_MUX I2C_MUX_REG I2C_ROBOTFUZZ_OSIF I2C_SI4713 I2C_SLAVE I2C_SLAVE_EEPROM I2C_TINY_USB I2C_VIPERBOARD IEEE802154 IEEE802154_6LOWPAN IEEE802154_ATUSB IEEE802154_DRIVERS IEEE802154_HWSIM IEEE802154_NL802154_EXPERIMENTAL IEEE802154_SOCKET IFB IIO IIO_BUFFER IIO_KFIFO_BUF IIO_TRIGGER IIO_TRIGGERED_BUFFER IKCONFIG IKCONFIG_PROC IMA IMA_APPRAISE IMA_APPRAISE_MODSIG IMA_DEFAULT_HASH_SHA256 IMA_LSM_RULES IMA_MEASURE_ASYMMETRIC_KEYS IMA_NG_TEMPLATE IMA_QUEUE_EARLY_BOOT_KEYS IMA_READ_POLICY IMA_WRITE_POLICY INET6_ESPINTCP INET6_ESP_OFFLOAD INET6_IPCOMP INET6_TUNNEL INET6_XFRM_TUNNEL INET_AH INET_DCCP_DIAG INET_DIAG INET_DIAG_DESTROY INET_ESP INET_ESPINTCP INET_ESP_OFFLOAD INET_IPCOMP INET_MPTCP_DIAG INET_RAW_DIAG INET_SCTP_DIAG INET_TCP_DIAG INET_UDP_DIAG INET_XFRM_TUNNEL INFINIBAND INFINIBAND_ADDR_TRANS INFINIBAND_ADDR_TRANS_CONFIGFS INFINIBAND_IPOIB INFINIBAND_IPOIB_CM INFINIBAND_IPOIB_DEBUG INFINIBAND_ISER INFINIBAND_ON_DEMAND_PAGING INFINIBAND_RTRS INFINIBAND_SRP INFINIBAND_USER_ACCESS INFINIBAND_USER_MAD INFINIBAND_USER_MEM INPUT_ATI_REMOTE2 INPUT_CM109 INPUT_IMS_PCU INPUT_JOYDEV INPUT_KEYSPAN_REMOTE INPUT_LEDS INPUT_MOUSEDEV INPUT_MOUSEDEV_PSAUX INPUT_POWERMATE INPUT_UINPUT INPUT_YEALINK INTEGRITY INTEGRITY_ASYMMETRIC_KEYS INTEGRITY_AUDIT INTEGRITY_SIGNATURE INTEGRITY_TRUSTED_KEYRING INTEL_CHTWC_INT33FE INTEL_IDMA64 INTEL_IOATDMA INTEL_IOMMU_DEFAULT_ON INTEL_IOMMU_SVM INTEL_ISHTP_ECLITE INTEL_ISH_FIRMWARE_DOWNLOADER INTEL_ISH_HID INTEL_SOC_PMIC_CHTWC INTERVAL_TREE_SPAN_ITER IOMMUFD IOMMUFD_DRIVER IOMMUFD_DRIVER_CORE IOMMUFD_TEST IP6_NF_MATCH_AH IP6_NF_MATCH_EUI64 IP6_NF_MATCH_FRAG IP6_NF_MATCH_HL IP6_NF_MATCH_MH IP6_NF_MATCH_OPTS IP6_NF_MATCH_RPFILTER IP6_NF_MATCH_RT IP6_NF_MATCH_SRH IP6_NF_NAT IP6_NF_RAW IP6_NF_SECURITY IP6_NF_TARGET_HL IP6_NF_TARGET_MASQUERADE IP6_NF_TARGET_NPT IP6_NF_TARGET_SYNPROXY IPV6_FOU IPV6_FOU_TUNNEL IPV6_GRE IPV6_ILA IPV6_MIP6 IPV6_MROUTE IPV6_MROUTE_MULTIPLE_TABLES IPV6_MULTIPLE_TABLES IPV6_OPTIMISTIC_DAD IPV6_PIMSM_V2 IPV6_ROUTER_PREF IPV6_ROUTE_INFO IPV6_RPL_LWTUNNEL IPV6_SEG6_BPF IPV6_SEG6_HMAC IPV6_SEG6_LWTUNNEL IPV6_SIT_6RD IPV6_SUBTREES IPV6_TUNNEL IPV6_VTI IPVLAN IPVLAN_L3S IPVTAP IP_DCCP IP_DCCP_CCID3 IP_DCCP_TFRC_LIB IP_FIB_TRIE_STATS IP_MROUTE_MULTIPLE_TABLES IP_NF_ARPFILTER IP_NF_ARPTABLES IP_NF_ARP_MANGLE IP_NF_MATCH_AH IP_NF_MATCH_ECN IP_NF_MATCH_RPFILTER IP_NF_MATCH_TTL IP_NF_RAW IP_NF_SECURITY IP_NF_TARGET_ECN IP_NF_TARGET_NETMAP IP_NF_TARGET_REDIRECT IP_NF_TARGET_SYNPROXY IP_NF_TARGET_TTL IP_ROUTE_CLASSID IP_SCTP IP_SET IP_SET_BITMAP_IP IP_SET_BITMAP_IPMAC IP_SET_BITMAP_PORT IP_SET_HASH_IP IP_SET_HASH_IPMAC IP_SET_HASH_IPMARK IP_SET_HASH_IPPORT IP_SET_HASH_IPPORTIP IP_SET_HASH_IPPORTNET IP_SET_HASH_MAC IP_SET_HASH_NET IP_SET_HASH_NETIFACE IP_SET_HASH_NETNET IP_SET_HASH_NETPORT IP_SET_HASH_NETPORTNET IP_SET_LIST_SET IP_VS IP_VS_DH IP_VS_FO IP_VS_FTP IP_VS_IPV6 IP_VS_PROTO_TCP IRQ_TIME_ACCOUNTING LAPB LCD_CLASS_DEVICE MAC802154 MCORE2 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 MODVERSIONS MPTCP MTD NETFILTER_ADVANCED NET_ACT_GACT NET_ACT_MIRRED NET_IPGRE_DEMUX NFT_COMPAT NFT_COMPAT_ARP NFT_FWD_NETDEV NF_TABLES NF_TABLES_ARP NF_TABLES_NETDEV RADIO_ADAPTERS RADIO_SI4713 RAS RC_CORE REGULATOR RFKILL SND SOUND STAGING TRANSPARENT_HUGEPAGE TYPEC TYPEC_MUX_PI3USB30532 USB_LJCA USB_ROLES_INTEL_XHCI USB_ROLE_SWITCH VIDEO_DEV VIRTIO_FS WAN ZONE_DEVICE] disabling configs for [BUG KASAN LOCKDEP ATOMIC_SLEEP LEAK UBSAN], they are not needed testing current HEAD 6fea5fabd3323cd27b2ab5143263f37ff29550cb testing commit 6fea5fabd3323cd27b2ab5143263f37ff29550cb gcc compiler: Debian clang version 15.0.6, Debian LLD 15.0.6 kernel signature: 2d823ee65cd4c40b4d6ade646681e6153909120fd82c3766c1a014f1aec4d6af all runs: OK false negative chance: 0.000 # git bisect start 6fea5fabd3323cd27b2ab5143263f37ff29550cb bb2281fb05e50108ce95c43ab7e701ee564565c8 Bisecting: 7572 revisions left to test after this (roughly 13 steps) [fd71def6d9abc5ae362fb9995d46049b7b0ed391] Merge tag 'for-6.15-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux determine whether the revision contains the guilty commit revision bb2281fb05e50108ce95c43ab7e701ee564565c8 crashed and is reachable testing commit fd71def6d9abc5ae362fb9995d46049b7b0ed391 gcc compiler: Debian clang version 15.0.6, Debian LLD 15.0.6 kernel signature: d2745dbf61a7a74328e0f41c384c9f9387db5ba38a8a9c019b2b513bbaf83e94 all runs: crashed: INFO: rcu detected stall in corrupted representative crash: INFO: rcu detected stall in corrupted, types: [HANG] # git bisect good fd71def6d9abc5ae362fb9995d46049b7b0ed391 Bisecting: 3880 revisions left to test after this (roughly 12 steps) [7f2ff7b6261742ed52aa973ccdf99151b7cc3a50] Merge tag 'mailbox-v6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/jassibrar/mailbox determine whether the revision contains the guilty commit revision bb2281fb05e50108ce95c43ab7e701ee564565c8 crashed and is reachable testing commit 7f2ff7b6261742ed52aa973ccdf99151b7cc3a50 gcc compiler: Debian clang version 15.0.6, Debian LLD 15.0.6 kernel signature: 655d48bc1a8a201debfca588fe39448e7fe9ed4800c847a8fbba6569de3e8785 all runs: crashed: INFO: rcu detected stall in corrupted representative crash: INFO: rcu detected stall in corrupted, types: [HANG] # git bisect good 7f2ff7b6261742ed52aa973ccdf99151b7cc3a50 Bisecting: 1938 revisions left to test after this (roughly 11 steps) [acc4d5ff0b61eb1715c498b6536c38c1feb7f3c1] Merge tag 'net-6.15-rc0' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net determine whether the revision contains the guilty commit revision fd71def6d9abc5ae362fb9995d46049b7b0ed391 crashed and is reachable testing commit acc4d5ff0b61eb1715c498b6536c38c1feb7f3c1 gcc compiler: Debian clang version 15.0.6, Debian LLD 15.0.6 kernel signature: 6e2d4c4a28e2e2a9c3dd2cffa8cab09685505e69e6b2962727e05a314959757c all runs: OK false negative chance: 0.000 # git bisect bad acc4d5ff0b61eb1715c498b6536c38c1feb7f3c1 Bisecting: 1185 revisions left to test after this (roughly 10 steps) [08733088b566b58283f0f12fb73f5db6a9a9de30] Merge tag 'rust-fixes-6.15-merge' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux determine whether the revision contains the guilty commit revision fd71def6d9abc5ae362fb9995d46049b7b0ed391 crashed and is reachable testing commit 08733088b566b58283f0f12fb73f5db6a9a9de30 gcc compiler: Debian clang version 15.0.6, Debian LLD 15.0.6 kernel signature: a2e17a6b3eb3329402dae703e8bca9165aefe59311711dfa898f2d39abdc29f6 all runs: OK false negative chance: 0.000 # git bisect bad 08733088b566b58283f0f12fb73f5db6a9a9de30 Bisecting: 377 revisions left to test after this (roughly 9 steps) [4e82c87058f45e79eeaa4d5bcc3b38dd3dce7209] Merge tag 'rust-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux determine whether the revision contains the guilty commit revision 7f2ff7b6261742ed52aa973ccdf99151b7cc3a50 crashed and is reachable testing commit 4e82c87058f45e79eeaa4d5bcc3b38dd3dce7209 gcc compiler: Debian clang version 15.0.6, Debian LLD 15.0.6 kernel signature: 0d6d136ab5abccee659f404d3b008064b9ababcfff9e46a9824f019dd179e99b all runs: crashed: INFO: rcu detected stall in corrupted representative crash: INFO: rcu detected stall in corrupted, types: [HANG] # git bisect good 4e82c87058f45e79eeaa4d5bcc3b38dd3dce7209 Bisecting: 188 revisions left to test after this (roughly 8 steps) [a570da214819fa2bd26b8edcaf857867f55e60c5] perf python tracepoint.py: Change the COMM using setproctitle if available determine whether the revision contains the guilty commit checking the merge base 2014c95afecee3e76ca4a56956a936e23283f05b no existing result, test the revision testing commit 2014c95afecee3e76ca4a56956a936e23283f05b gcc compiler: Debian clang version 15.0.6, Debian LLD 15.0.6 kernel signature: 79c21b89b48e9ff13cce77fe8d8826e9d5dd3542a0fe2721a192c49dd0613e62 all runs: crashed: INFO: rcu detected stall in corrupted representative crash: INFO: rcu detected stall in corrupted, types: [HANG] testing commit a570da214819fa2bd26b8edcaf857867f55e60c5 gcc compiler: Debian clang version 15.0.6, Debian LLD 15.0.6 kernel signature: 49567d6180f9ba5643c32c0ba927bf6870ada4e8aafc0cc03d57217ae5be5ba6 all runs: crashed: INFO: rcu detected stall in corrupted representative crash: INFO: rcu detected stall in corrupted, types: [HANG] # git bisect good a570da214819fa2bd26b8edcaf857867f55e60c5 Bisecting: 79 revisions left to test after this (roughly 7 steps) [b6dde1e5275ed82e4c89844e95a03f95ca48be13] Merge tag 'nfsd-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux determine whether the revision contains the guilty commit revision 2014c95afecee3e76ca4a56956a936e23283f05b crashed and is reachable testing commit b6dde1e5275ed82e4c89844e95a03f95ca48be13 gcc compiler: Debian clang version 15.0.6, Debian LLD 15.0.6 kernel signature: 13ad5f9bb51db717def56975a858dbc8b8d6ee29c8d0d7658c346e4a26e0b41c all runs: crashed: INFO: rcu detected stall in corrupted representative crash: INFO: rcu detected stall in corrupted, types: [HANG] # git bisect good b6dde1e5275ed82e4c89844e95a03f95ca48be13 Bisecting: 37 revisions left to test after this (roughly 5 steps) [4080cf02f11e337c5031013f77e0ba1a475985ee] Merge tag 'fs_for_v6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs determine whether the revision contains the guilty commit revision 7f2ff7b6261742ed52aa973ccdf99151b7cc3a50 crashed and is reachable testing commit 4080cf02f11e337c5031013f77e0ba1a475985ee gcc compiler: Debian clang version 15.0.6, Debian LLD 15.0.6 kernel signature: b36736d7ecdf60f436603a5a7144d1cb668e4800c43248f44ba3850406c52865 all runs: OK false negative chance: 0.000 # git bisect bad 4080cf02f11e337c5031013f77e0ba1a475985ee Bisecting: 25 revisions left to test after this (roughly 4 steps) [8b175e2e189673643bf5b996335f0430faddf953] Merge tag '6.15-rc-part1-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6 determine whether the revision contains the guilty commit revision 2014c95afecee3e76ca4a56956a936e23283f05b crashed and is reachable testing commit 8b175e2e189673643bf5b996335f0430faddf953 gcc compiler: Debian clang version 15.0.6, Debian LLD 15.0.6 kernel signature: 4f1c8380d98a31c1fa19008706db2e5e7360de73ea84febcfb174bb061bc8662 all runs: crashed: INFO: rcu detected stall in corrupted representative crash: INFO: rcu detected stall in corrupted, types: [HANG] # git bisect good 8b175e2e189673643bf5b996335f0430faddf953 Bisecting: 14 revisions left to test after this (roughly 4 steps) [f64a72bc767f6e9ddb18fdacaeb99708c4810ada] Merge tag 'v6.15rc-part1-ksmbd-server-fixes' of git://git.samba.org/ksmbd determine whether the revision contains the guilty commit revision bb2281fb05e50108ce95c43ab7e701ee564565c8 crashed and is reachable testing commit f64a72bc767f6e9ddb18fdacaeb99708c4810ada gcc compiler: Debian clang version 15.0.6, Debian LLD 15.0.6 kernel signature: 0c639c4f9a14bae0a92ced3f2ce79d11c04bcb8caab520f7ea0f354d86dabdb9 all runs: crashed: INFO: rcu detected stall in corrupted representative crash: INFO: rcu detected stall in corrupted, types: [HANG] # git bisect good f64a72bc767f6e9ddb18fdacaeb99708c4810ada Bisecting: 7 revisions left to test after this (roughly 3 steps) [c73e680d1f84059e1b1ea82a537f6ccc1c563eb4] exfat: call bh_read in get_block only when necessary determine whether the revision contains the guilty commit revision bb2281fb05e50108ce95c43ab7e701ee564565c8 crashed and is reachable testing commit c73e680d1f84059e1b1ea82a537f6ccc1c563eb4 gcc compiler: Debian clang version 15.0.6, Debian LLD 15.0.6 kernel signature: e870d16d0e320d8d320e0da22acfed023e2532123dde2944436951868b572e4d all runs: OK false negative chance: 0.000 # git bisect bad c73e680d1f84059e1b1ea82a537f6ccc1c563eb4 Bisecting: 3 revisions left to test after this (roughly 2 steps) [1bb7ff4204b6d4927e982cd256286c09ed4fd8ca] exfat: fix random stack corruption after get_block determine whether the revision contains the guilty commit revision bb2281fb05e50108ce95c43ab7e701ee564565c8 crashed and is reachable testing commit 1bb7ff4204b6d4927e982cd256286c09ed4fd8ca gcc compiler: Debian clang version 15.0.6, Debian LLD 15.0.6 kernel signature: 8be028dbb189fc4bb302673a49f9e85b59e626701297bbd7cc9b8e8893882119 all runs: crashed: INFO: rcu detected stall in corrupted representative crash: INFO: rcu detected stall in corrupted, types: [HANG] # git bisect good 1bb7ff4204b6d4927e982cd256286c09ed4fd8ca Bisecting: 1 revision left to test after this (roughly 1 step) [47e35366bc6fa3cf189a8305bce63992495f3efa] exfat: fix missing shutdown check determine whether the revision contains the guilty commit revision 1bb7ff4204b6d4927e982cd256286c09ed4fd8ca crashed and is reachable testing commit 47e35366bc6fa3cf189a8305bce63992495f3efa gcc compiler: Debian clang version 15.0.6, Debian LLD 15.0.6 kernel signature: 8211861c7a0f8c1d2bc8754c504462a31127cf2b8174a0798eeab2abaccff8a9 all runs: OK false negative chance: 0.000 # git bisect bad 47e35366bc6fa3cf189a8305bce63992495f3efa Bisecting: 0 revisions left to test after this (roughly 0 steps) [b0522303f67255926b946aa66885a0104d1b2980] exfat: fix the infinite loop in exfat_find_last_cluster() determine whether the revision contains the guilty commit revision 1bb7ff4204b6d4927e982cd256286c09ed4fd8ca crashed and is reachable testing commit b0522303f67255926b946aa66885a0104d1b2980 gcc compiler: Debian clang version 15.0.6, Debian LLD 15.0.6 kernel signature: 580fe9af54a00b0ad27f2aee879439f15830261c3f075f88d5bfedbf226db0c1 all runs: OK false negative chance: 0.000 # git bisect bad b0522303f67255926b946aa66885a0104d1b2980 b0522303f67255926b946aa66885a0104d1b2980 is the first bad commit commit b0522303f67255926b946aa66885a0104d1b2980 Author: Yuezhang Mo Date: Mon Mar 17 10:53:10 2025 +0800 exfat: fix the infinite loop in exfat_find_last_cluster() In exfat_find_last_cluster(), the cluster chain is traversed until the EOF cluster. If the cluster chain includes a loop due to file system corruption, the EOF cluster cannot be traversed, resulting in an infinite loop. If the number of clusters indicated by the file size is inconsistent with the cluster chain length, exfat_find_last_cluster() will return an error, so if this inconsistency is found, the traversal can be aborted without traversing to the EOF cluster. Reported-by: syzbot+f7d147e6db52b1e09dba@syzkaller.appspotmail.com Closes: https://syzkaller.appspot.com/bug?extid=f7d147e6db52b1e09dba Tested-by: syzbot+f7d147e6db52b1e09dba@syzkaller.appspotmail.com Fixes: 31023864e67a ("exfat: add fat entry operations") Signed-off-by: Yuezhang Mo Signed-off-by: Namjae Jeon fs/exfat/fatent.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) accumulated error probability: 0.00 culprit signature: 580fe9af54a00b0ad27f2aee879439f15830261c3f075f88d5bfedbf226db0c1 parent signature: 8be028dbb189fc4bb302673a49f9e85b59e626701297bbd7cc9b8e8893882119 revisions tested: 22, total time: 7h36m57.350588274s (build: 4h2m51.650410849s, test: 3h15m21.130704216s) first good commit: b0522303f67255926b946aa66885a0104d1b2980 exfat: fix the infinite loop in exfat_find_last_cluster() recipients (to): ["linkinjeon@kernel.org" "syzbot+f7d147e6db52b1e09dba@syzkaller.appspotmail.com" "yuezhang.mo@sony.com"] recipients (cc): []