ci2 starts bisection 2025-04-26 01:48:29.190000669 +0000 UTC m=+29678.939342193
bisecting fixing commit since ab75170520d4964f3acf8bb1f91d34cbc650688e
building syzkaller on f3558dbf032eab2b77c1cb11b9ce2baffe7838d3
ensuring issue is reproducible on original commit ab75170520d4964f3acf8bb1f91d34cbc650688e
testing commit ab75170520d4964f3acf8bb1f91d34cbc650688e gcc
compiler: Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2
kernel signature: f85818eb526ece7d4f88920709ce3bb0d1f3060a357718c435a22a435e49bd4a
all runs: crashed: INFO: task hung in find_inode
representative crash: INFO: task hung in find_inode, types: [HANG]
check whether we can drop unnecessary instrumentation
disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP LEAK UBSAN BUG], they are not needed
testing commit ab75170520d4964f3acf8bb1f91d34cbc650688e gcc
compiler: Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2
kernel signature: b9a103593248518f44e7ab659aa5eedb6f444b3975a264efcb834cca4c7135b6
all runs: crashed: INFO: task hung in find_inode
representative crash: INFO: task hung in find_inode, types: [HANG]
the bug reproduces without the instrumentation
disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP LEAK UBSAN BUG], they are not needed
kconfig minimization: base=4080 full=8236 leaves diff=2142
split chunks (needed=false): <2142>
split chunk #0 of len 2142 into 5 parts
testing without sub-chunk 1/5
disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed
testing commit ab75170520d4964f3acf8bb1f91d34cbc650688e gcc
compiler: Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2
kernel signature: 3cb187944af0ee42e55adec98c52cae4e115acaede6235531306c1ac1e03a1d5
all runs: crashed: INFO: task hung in find_inode
representative crash: INFO: task hung in find_inode, types: [HANG]
the chunk can be dropped
testing without sub-chunk 2/5
disabling configs for [ATOMIC_SLEEP LEAK UBSAN BUG KASAN LOCKDEP], they are not needed
testing commit ab75170520d4964f3acf8bb1f91d34cbc650688e gcc
compiler: Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2
failed building ab75170520d4964f3acf8bb1f91d34cbc650688e: ld.lld: error: undefined symbol: devm_drm_of_get_bridge
testing without sub-chunk 3/5
disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed
testing commit ab75170520d4964f3acf8bb1f91d34cbc650688e gcc
compiler: Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2
kernel signature: 597c13f6dfa284de1597421881a9ed79dc412fc87aea8c5e25bb0d39b0850f68
all runs: OK
false negative chance: 0.000
testing without sub-chunk 4/5
disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed
testing commit ab75170520d4964f3acf8bb1f91d34cbc650688e gcc
compiler: Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2
kernel signature: 3e0cf0b3f73892c560a6b01d835ecc1c9f68544c757029736cf76dd06db79f80
all runs: crashed: INFO: task hung in find_inode
representative crash: INFO: task hung in find_inode, types: [HANG]
the chunk can be dropped
testing without sub-chunk 5/5
disabling configs for [UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP LEAK], they are not needed
testing commit ab75170520d4964f3acf8bb1f91d34cbc650688e gcc
compiler: Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2
kernel signature: 2716af68222523a9fa244f6b363c08c067f2f06d520924801e340357170d2a73
all runs: crashed: INFO: task hung in find_inode
representative crash: INFO: task hung in find_inode, types: [HANG]
the chunk can be dropped
minimized to 858 configs; suspects: [6LOWPAN ARCH_ENABLE_MEMORY_HOTREMOVE ASUS_WMI AX25 BRIDGE BRIDGE_NETFILTER CAN CFG80211 CHARGER_BQ24190 CHECKPOINT_RESTORE CMA COMMON_CLK DAX DLM DRM DRM_BRIDGE DRM_CLIENT_SELECTION DRM_FBDEV_EMULATION DRM_GEM_SHMEM_HELPER DRM_GM12U320 DRM_GUD 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 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_BACKED_BY_FILE 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 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 HAMRADIO 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_NINTENDO 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 HSR 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_JOYSTICK INPUT_KEYSPAN_REMOTE INPUT_LEDS INPUT_MOUSE 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_LBLC IP_VS_LBLCR IP_VS_LC IP_VS_MH IP_VS_NFCT IP_VS_NQ IP_VS_OVF IP_VS_PE_SIP IP_VS_PROTO_AH IP_VS_PROTO_AH_ESP IP_VS_PROTO_ESP IP_VS_PROTO_SCTP IP_VS_PROTO_TCP IP_VS_PROTO_UDP IP_VS_RR IP_VS_SED IP_VS_SH IP_VS_TWOS IP_VS_WLC IP_VS_WRR IRQ_BYPASS_MANAGER IRQ_MSI_IOMMU IRQ_POLL IRQ_TIME_ACCOUNTING IR_IGORPLUGUSB IR_IGUANA IR_IMON IR_IMON_RAW IR_MCEUSB IR_REDRAT3 IR_STREAMZAP IR_TOY IR_TTUSBIR ISDN ISDN_CAPI JFFS2_CMODE_PRIORITY JFFS2_COMPRESSION_OPTIONS JFFS2_FS JFFS2_FS_POSIX_ACL JFFS2_FS_SECURITY JFFS2_FS_WRITEBUFFER JFFS2_FS_XATTR JFFS2_LZO JFFS2_RTIME JFFS2_RUBIN JFFS2_SUMMARY JFFS2_ZLIB JFS_DEBUG JFS_FS JFS_POSIX_ACL JFS_SECURITY JOYSTICK_IFORCE JOYSTICK_IFORCE_USB JOYSTICK_PXRC JOYSTICK_XPAD JOYSTICK_XPAD_FF JOYSTICK_XPAD_LEDS KALLSYMS_ABSOLUTE_PERCPU KARMA_PARTITION KCOV KCOV_ENABLE_COMPARISONS KCOV_INSTRUMENT_ALL KEYS_REQUEST_CACHE KEY_DH_OPERATIONS KEY_NOTIFICATIONS KSM KVM KVM_AMD KVM_ASYNC_PF KVM_COMMON KVM_COMPAT KVM_ELIDE_TLB_FLUSH_IF_YOUNG KVM_GENERIC_DIRTYLOG_READ_PROTECT KVM_GENERIC_HARDWARE_ENABLING KVM_GENERIC_MEMORY_ATTRIBUTES KVM_GENERIC_MMU_NOTIFIER KVM_GENERIC_PRE_FAULT_MEMORY KVM_GENERIC_PRIVATE_MEM KVM_HYPERV KVM_MMIO KVM_PRIVATE_MEM KVM_PROVE_MMU KVM_SW_PROTECTED_VM KVM_VFIO KVM_X86 KVM_XEN KVM_XFER_TO_GUEST_WORK L2TP L2TP_ETH L2TP_IP L2TP_V3 LAPB LAPBETHER LCD_CLASS_DEVICE LDM_PARTITION LD_IS_BFD LEGACY_PTYS LIBCRC32C LIBNVDIMM LINEAR_RANGES LLC LLC2 LOGIG940_FF LOGIRUMBLEPAD2_FF LOGITECH_FF LOGIWHEELS_FF LOGO LOGO_LINUX_MONO LOGO_LINUX_VGA16 LPC_ICH LWTUNNEL LWTUNNEL_BPF LZ4HC_COMPRESS LZ4_COMPRESS MAC80211 MAC80211_HAS_RC MAC80211_HWSIM MAC80211_MESH MAC80211_RC_DEFAULT_MINSTREL MAC80211_RC_MINSTREL MAC802154 MACSEC MACVLAN MACVTAP MAC_PARTITION MAPPING_DIRTY_HELPERS MCORE2 MDIO_MVUSB MD_RAID0 MD_RAID1 MD_RAID10 MD_RAID456 MEDIA_ANALOG_TV_SUPPORT MEDIA_ATTACH MEDIA_CONTROLLER MEDIA_CONTROLLER_DVB MEDIA_DIGITAL_TV_SUPPORT MEDIA_RADIO_SUPPORT MEDIA_SDR_SUPPORT MEDIA_SUPPORT MEDIA_SUPPORT_FILTER MEDIA_TEST_SUPPORT MEDIA_TUNER MEDIA_TUNER_MSI001 MEDIA_USB_SUPPORT MEMORY_BALLOON MEMORY_HOTPLUG MEMORY_HOTPLUG_DEFAULT_ONLINE MEMORY_HOTREMOVE MEMORY_ISOLATION MEMREGION MEMSTICK MEMSTICK_REALTEK_USB MEM_SOFT_DIRTY MFD_CORE MFD_DLN2 MFD_SYSCON MFD_VIPERBOARD MHI_BUS MHI_WWAN_CTRL MHP_MEMMAP_ON_MEMORY MICROCHIP_PHY MINIX_FS MINIX_SUBPARTITION MIN_HEAP MISC_RTSX MISC_RTSX_USB MISDN MISDN_DSP MISDN_HFCUSB MISDN_L1OIP MKISS MLX4_CORE MLX4_INFINIBAND MMC MMC_REALTEK_USB MMC_USHC MMC_VUB300 MODULE_SRCVERSION_ALL MODVERSIONS MOST MOST_USB_HDM MOUSE_APPLETOUCH MOUSE_BCM5974 MOUSE_PS2 MOUSE_PS2_ALPS MOUSE_PS2_BYD MOUSE_PS2_CYPRESS MOUSE_PS2_FOCALTECH MOUSE_PS2_LIFEBOOK MOUSE_PS2_LOGIPS2PP MOUSE_PS2_SMBUS MOUSE_PS2_SYNAPTICS MOUSE_PS2_SYNAPTICS_SMBUS MOUSE_PS2_TRACKPOINT MOUSE_SYNAPTICS_USB MPLS MPLS_IPTUNNEL MPLS_ROUTING MPTCP MPTCP_IPV6 MRP MTD MTD_BLKDEVS MTD_BLOCK MTD_BLOCK2MTD MTD_CFI_I1 MTD_CFI_I2 MTD_MAP_BANK_WIDTH_1 MTD_MAP_BANK_WIDTH_2 MTD_MAP_BANK_WIDTH_4 MTD_MTDRAM MTD_PHRAM MTD_SLRAM MUSB_PIO_ONLY ND_BTT ND_CLAIM ND_PFN NETDEVSIM NETFILTER_ADVANCED NETFILTER_BPF_LINK NETFILTER_FAMILY_ARP NETFILTER_FAMILY_BRIDGE NETFILTER_NETLINK_ACCT NETFILTER_NETLINK_GLUE_CT NETFILTER_NETLINK_OSF NETFILTER_NETLINK_QUEUE NETFILTER_SYNPROXY NETFILTER_XTABLES_COMPAT NETFILTER_XT_CONNMARK NETFILTER_XT_MATCH_BPF NETFILTER_XT_MATCH_CGROUP NETFILTER_XT_MATCH_CLUSTER NETFILTER_XT_MATCH_COMMENT NETFILTER_XT_MATCH_CONNBYTES NETFILTER_XT_MATCH_CONNLABEL NETFILTER_XT_MATCH_CONNLIMIT NETFILTER_XT_MATCH_CONNMARK NETFILTER_XT_MATCH_CPU NETFILTER_XT_MATCH_DCCP NETFILTER_XT_MATCH_DEVGROUP NETFILTER_XT_MATCH_DSCP NETFILTER_XT_MATCH_ECN NETFILTER_XT_MATCH_ESP NETFILTER_XT_MATCH_HASHLIMIT NETFILTER_XT_MATCH_HELPER NETFILTER_XT_MATCH_HL NETFILTER_XT_MATCH_IPCOMP NETFILTER_XT_MATCH_IPRANGE NETFILTER_XT_MATCH_IPVS NETFILTER_XT_MATCH_L2TP NETFILTER_XT_MATCH_LENGTH NETFILTER_XT_MATCH_LIMIT NETFILTER_XT_MATCH_MAC NETFILTER_XT_MATCH_MARK NETFILTER_XT_MATCH_MULTIPORT NETFILTER_XT_MATCH_NFACCT NETFILTER_XT_MATCH_OSF NETFILTER_XT_MATCH_OWNER NETFILTER_XT_MATCH_PHYSDEV NETFILTER_XT_MATCH_PKTTYPE NETFILTER_XT_MATCH_QUOTA NETFILTER_XT_MATCH_RATEEST NETFILTER_XT_MATCH_REALM NETFILTER_XT_MATCH_RECENT NETFILTER_XT_MATCH_SCTP NETFILTER_XT_MATCH_SOCKET NETFILTER_XT_MATCH_STATISTIC NETFILTER_XT_MATCH_STRING NETFILTER_XT_MATCH_TCPMSS NETFILTER_XT_MATCH_TIME NETFILTER_XT_MATCH_U32 NETFILTER_XT_SET NETFILTER_XT_TARGET_AUDIT NETFILTER_XT_TARGET_CHECKSUM NETFILTER_XT_TARGET_CLASSIFY NETFILTER_XT_TARGET_CONNMARK NETFILTER_XT_TARGET_CT NETFILTER_XT_TARGET_DSCP NETFILTER_XT_TARGET_HL NETFILTER_XT_TARGET_HMARK NETFILTER_XT_TARGET_IDLETIMER NETFILTER_XT_TARGET_LED NETFILTER_XT_TARGET_MARK NETFILTER_XT_TARGET_NETMAP NETFILTER_XT_TARGET_NFQUEUE NETFILTER_XT_TARGET_NOTRACK NETFILTER_XT_TARGET_RATEEST NETFILTER_XT_TARGET_REDIRECT NETFILTER_XT_TARGET_TCPOPTSTRIP NETFILTER_XT_TARGET_TEE NETFILTER_XT_TARGET_TPROXY NETFILTER_XT_TARGET_TRACE NETLINK_DIAG NETROM NET_9P_RDMA NET_ACT_BPF NET_ACT_CONNMARK NET_ACT_CSUM NET_ACT_CT NET_ACT_CTINFO NET_ACT_GACT NET_ACT_GATE NET_ACT_IFE NET_ACT_MIRRED NET_ACT_MPLS NET_ACT_NAT NET_ACT_PEDIT NET_ACT_POLICE NET_ACT_SAMPLE NET_ACT_SIMP NET_ACT_SKBEDIT NET_ACT_SKBMOD NET_ACT_TUNNEL_KEY NET_ACT_VLAN NET_CLS_BASIC NET_CLS_BPF NET_CLS_FLOW NET_CLS_FLOWER NET_CLS_FW NET_CLS_MATCHALL NET_CLS_ROUTE4 NET_DEVLINK NET_DEVMEM NET_DROP_MONITOR NET_DSA NET_DSA_TAG_BRCM NET_DSA_TAG_BRCM_COMMON NET_DSA_TAG_BRCM_PREPEND NET_DSA_TAG_MTK NET_DSA_TAG_QCA NET_DSA_TAG_RTL4_A NET_EMATCH_CANID NET_EMATCH_CMP NET_EMATCH_IPSET NET_EMATCH_IPT NET_EMATCH_META NET_EMATCH_NBYTE NET_EMATCH_TEXT NET_EMATCH_U32 NET_FC NET_FOU NET_FOU_IP_TUNNELS NET_IFE NET_IFE_SKBMARK NET_IFE_SKBPRIO NET_IFE_SKBTCINDEX NET_IPGRE NET_IPGRE_BROADCAST NET_IPGRE_DEMUX NET_IPIP NET_IPVTI NET_KEY NET_KEY_MIGRATE NET_L3_MASTER_DEV NET_MPLS_GSO NET_NCSI NET_NSH NET_REDIRECT NET_SCH_CAKE NET_SCH_CBS NET_SCH_CHOKE NET_SCH_CODEL NET_SCH_DRR NET_SCH_ETF NET_SCH_ETS NET_SCH_FQ NET_SCH_FQ_CODEL NET_SCH_FQ_PIE NET_SCH_GRED NET_SCH_HFSC NET_SCH_HHF NET_SCH_HTB NET_SCH_INGRESS NET_SCH_MQPRIO NET_SCH_MQPRIO_LIB NET_SCH_MULTIQ NET_SCH_NETEM NET_SCH_PIE NET_SCH_PLUG NET_SCH_PRIO NET_SCH_QFQ NET_SCH_RED NET_SCH_SFB NET_SCH_SFQ NET_SCH_SKBPRIO NET_SCH_TAPRIO NET_SCH_TBF NET_SCH_TEQL NET_SHAPER NET_SOCK_MSG NET_SWITCHDEV NET_TC_SKB_EXT NET_TEAM NET_TEAM_MODE_ACTIVEBACKUP NET_TEAM_MODE_BROADCAST NET_TEAM_MODE_LOADBALANCE NET_TEAM_MODE_RANDOM NET_TEAM_MODE_ROUNDROBIN NET_UDP_TUNNEL NET_VRF NFC NFC_DIGITAL NFC_FDP NFC_HCI NFC_MRVL NFC_MRVL_USB NFC_NCI NFC_NCI_UART NFC_PN533 NFC_PN533_USB NFC_PORT100 NFC_SHDLC NFC_SIM NFC_VIRTUAL_NCI NFSD NFSD_BLOCKLAYOUT NFSD_FLEXFILELAYOUT NFSD_PNFS NFSD_SCSILAYOUT NFSD_V3_ACL NFSD_V4 NFSD_V4_2_INTER_SSC NFSD_V4_SECURITY_LABEL NFS_FSCACHE NFS_V4_1 NFS_V4_2 NFS_V4_2_READ_PLUS NFS_V4_2_SSC_HELPER NFS_V4_SECURITY_LABEL NFT_BRIDGE_META NFT_BRIDGE_REJECT NFT_COMPAT NFT_COMPAT_ARP NFT_CONNLIMIT NFT_CT NFT_DUP_IPV4 NFT_DUP_IPV6 NFT_DUP_NETDEV NFT_FIB NFT_FIB_INET NFT_FIB_IPV4 NFT_FIB_IPV6 NFT_FIB_NETDEV NFT_FLOW_OFFLOAD NFT_FWD_NETDEV NFT_HASH NFT_LIMIT NFT_LOG NFT_MASQ NFT_NAT NFT_NUMGEN NFT_OSF NFT_QUEUE NFT_QUOTA NFT_REDIR NFT_REJECT NFT_REJECT_INET NFT_REJECT_IPV4 NFT_REJECT_IPV6 NFT_REJECT_NETDEV NFT_SOCKET NFT_SYNPROXY NFT_TPROXY NFT_TUNNEL NFT_XFRM NF_CONNTRACK_AMANDA NF_CONNTRACK_BRIDGE NF_CONNTRACK_BROADCAST NF_CONNTRACK_EVENTS NF_CONNTRACK_H323 NF_CONNTRACK_LABELS NF_CONNTRACK_MARK NF_CONNTRACK_NETBIOS_NS NF_CONNTRACK_OVS NF_CONNTRACK_PPTP NF_CONNTRACK_SANE NF_CONNTRACK_SNMP NF_CONNTRACK_TFTP NF_CONNTRACK_TIMEOUT NF_CONNTRACK_TIMESTAMP NF_CONNTRACK_ZONES NF_CT_NETLINK_HELPER NF_CT_NETLINK_TIMEOUT NF_CT_PROTO_DCCP NF_CT_PROTO_GRE NF_CT_PROTO_SCTP NF_CT_PROTO_UDPLITE NF_DUP_IPV4 NF_DUP_IPV6 NF_DUP_NETDEV NF_FLOW_TABLE NF_FLOW_TABLE_INET NF_NAT_AMANDA NF_NAT_H323 NF_NAT_OVS NF_NAT_PPTP NF_NAT_REDIRECT NF_NAT_SNMP_BASIC NF_NAT_TFTP NF_SOCKET_IPV4 NF_SOCKET_IPV6 NF_TABLES NF_TABLES_ARP NF_TABLES_BRIDGE NF_TABLES_INET NF_TABLES_IPV4 NF_TABLES_IPV6 NF_TABLES_NETDEV NF_TPROXY_IPV4 NF_TPROXY_IPV6 NILFS2_FS NINTENDO_FF NLMON NLS_CODEPAGE_1250 NLS_CODEPAGE_1251 NLS_CODEPAGE_737 PAGE_POOL PARTITION_ADVANCED PSAMPLE RADIO_ADAPTERS RADIO_SI4713 RAS RC_CORE RC_DEVICES REGULATOR RFKILL SND SOUND SPI STAGING TRANSPARENT_HUGEPAGE TYPEC TYPEC_MUX_PI3USB30532 USB_GADGET USB_LJCA USB_MUSB_HDRC USB_ROLES_INTEL_XHCI USB_ROLE_SWITCH VIDEO_DEV VIRTIO_FS WAN WATCH_QUEUE WIRELESS WLAN WWAN X25 X86_X32_ABI ZONE_DEVICE]
disabling configs for [LOCKDEP ATOMIC_SLEEP LEAK UBSAN BUG KASAN], they are not needed
testing current HEAD f1a3944c860b0615d0513110d8cf62bb94adbb41
testing commit f1a3944c860b0615d0513110d8cf62bb94adbb41 gcc
compiler: Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2
kernel signature: 7f0fee4d457cf4cda706e00e8a30cceef40418b4a999beb4160919dfc4899965
all runs: crashed: INFO: task hung in find_inode
representative crash: INFO: task hung in find_inode, types: [HANG]
crash still not fixed/happens on the oldest tested release
revisions tested: 7, total time: 2h3m46.194854797s (build: 49m14.300071824s, test: 1h6m47.257646516s)
crash still not fixed or there were kernel test errors
commit msg: Merge tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf
crash: INFO: task hung in find_inode
INFO: task syz.1.17:6673 blocked for more than 143 seconds.
Not tainted 6.15.0-rc3-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.17 state:D stack:12488 pid:6673 tgid:6668 ppid:4713 task_flags:0x400140 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x764/0xc60 kernel/sched/core.c:6767
__schedule_loop kernel/sched/core.c:6845 [inline]
schedule+0xac/0x140 kernel/sched/core.c:6860
__wait_on_freeing_inode+0xec/0x190 fs/inode.c:2454
find_inode+0x13e/0x200 fs/inode.c:1029
inode_insert5+0x85/0x260 fs/inode.c:1285
insert_inode_locked4+0x3b/0x70 fs/inode.c:1831
nilfs_insert_inode_locked fs/nilfs2/inode.c:295 [inline]
nilfs_new_inode+0x240/0x320 fs/nilfs2/inode.c:349
nilfs_mkdir+0x88/0x1d0 fs/nilfs2/namei.c:234
vfs_mkdir+0x179/0x270 fs/namei.c:4359
do_mkdirat+0x11f/0x3d0 fs/namei.c:4392
__do_sys_mkdirat fs/namei.c:4409 [inline]
__se_sys_mkdirat fs/namei.c:4407 [inline]
__x64_sys_mkdirat+0x2c/0x40 fs/namei.c:4407
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x8f/0x170 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fecd8d85d29
RSP: 002b:00007fecd9b19038 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007fecd8f75fa0 RCX: 00007fecd8d85d29
RDX: 00000000000001c0 RSI: 0000000020000080 RDI: ffffffffffffff9c
RBP: 00007fecd8e01b08 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fecd8f75fa0 R15: 00007ffcb9b31138
Showing all locks held in the system:
3 locks held by kworker/1:0/24:
#0: ffff888100078748 ((wq_completion)events){....}-{0:0}, at: process_one_work kernel/workqueue.c:3213 [inline]
#0: ffff888100078748 ((wq_completion)events){....}-{0:0}, at: process_scheduled_works+0x354/0x8e0 kernel/workqueue.c:3319
#1: ffffc900000d3e30 ((work_completion)(&sci->sc_iput_work)){....}-{0:0}, at: process_one_work kernel/workqueue.c:3214 [inline]
#1: ffffc900000d3e30 ((work_completion)(&sci->sc_iput_work)){....}-{0:0}, at: process_scheduled_works+0x37b/0x8e0 kernel/workqueue.c:3319
#2: ffff88810dafa600 (sb_internal#2){....}-{0:0}, at: nilfs_evict_inode+0xb8/0x220 fs/nilfs2/inode.c:859
1 lock held by khungtaskd/31:
#0: ffffffff85002dd0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
#0: ffffffff85002dd0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline]
#0: ffffffff85002dd0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x2e/0x100 kernel/locking/lockdep.c:6764
3 locks held by kworker/0:2/1019:
#0: ffff888100078748 ((wq_completion)events){....}-{0:0}, at: process_one_work kernel/workqueue.c:3213 [inline]
#0: ffff888100078748 ((wq_completion)events){....}-{0:0}, at: process_scheduled_works+0x354/0x8e0 kernel/workqueue.c:3319
#1: ffffc90002193e30 ((work_completion)(&sci->sc_iput_work)){....}-{0:0}, at: process_one_work kernel/workqueue.c:3214 [inline]
#1: ffffc90002193e30 ((work_completion)(&sci->sc_iput_work)){....}-{0:0}, at: process_scheduled_works+0x37b/0x8e0 kernel/workqueue.c:3319
#2: ffff888108feb600 (sb_internal#2){....}-{0:0}, at: nilfs_evict_inode+0xb8/0x220 fs/nilfs2/inode.c:859
2 locks held by kworker/u8:5/1515:
#0: ffff88810007c948 ((wq_completion)events_unbound){....}-{0:0}, at: process_one_work kernel/workqueue.c:3213 [inline]
#0: ffff88810007c948 ((wq_completion)events_unbound){....}-{0:0}, at: process_scheduled_works+0x354/0x8e0 kernel/workqueue.c:3319
#1: ffffc9000283fe30 (connector_reaper_work){....}-{0:0}, at: process_one_work kernel/workqueue.c:3214 [inline]
#1: ffffc9000283fe30 (connector_reaper_work){....}-{0:0}, at: process_scheduled_works+0x37b/0x8e0 kernel/workqueue.c:3319
2 locks held by kworker/u8:7/1782:
#0: ffff88810007c948 ((wq_completion)events_unbound){....}-{0:0}, at: process_one_work kernel/workqueue.c:3213 [inline]
#0: ffff88810007c948 ((wq_completion)events_unbound){....}-{0:0}, at: process_scheduled_works+0x354/0x8e0 kernel/workqueue.c:3319
#1: ffffc90002c0fe30 ((reaper_work).work){....}-{0:0}, at: process_one_work kernel/workqueue.c:3214 [inline]
#1: ffffc90002c0fe30 ((reaper_work).work){....}-{0:0}, at: process_scheduled_works+0x37b/0x8e0 kernel/workqueue.c:3319
2 locks held by getty/2741:
#0: ffff888106b3f8a0 (&tty->ldisc_sem){....}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x50 drivers/tty/tty_ldisc.c:243
#1: ffffc900044eb2f0 (&ldata->atomic_read_lock){....}-{3:3}, at: n_tty_read+0x251/0xb90 drivers/tty/n_tty.c:2222
3 locks held by kworker/1:3/3036:
#0: ffff888100078748 ((wq_completion)events){....}-{0:0}, at: process_one_work kernel/workqueue.c:3213 [inline]
#0: ffff888100078748 ((wq_completion)events){....}-{0:0}, at: process_scheduled_works+0x354/0x8e0 kernel/workqueue.c:3319
#1: ffffc90001a13e30 ((work_completion)(&sci->sc_iput_work)){....}-{0:0}, at: process_one_work kernel/workqueue.c:3214 [inline]
#1: ffffc90001a13e30 ((work_completion)(&sci->sc_iput_work)){....}-{0:0}, at: process_scheduled_works+0x37b/0x8e0 kernel/workqueue.c:3319
#2: ffff888164e16600 (sb_internal#2){....}-{0:0}, at: nilfs_evict_inode+0xb8/0x220 fs/nilfs2/inode.c:859
3 locks held by kworker/0:3/4003:
#0: ffff888100078748 ((wq_completion)events){....}-{0:0}, at: process_one_work kernel/workqueue.c:3213 [inline]
#0: ffff888100078748 ((wq_completion)events){....}-{0:0}, at: process_scheduled_works+0x354/0x8e0 kernel/workqueue.c:3319
#1: ffffc90001a03e30 ((work_completion)(&sci->sc_iput_work)){....}-{0:0}, at: process_one_work kernel/workqueue.c:3214 [inline]
#1: ffffc90001a03e30 ((work_completion)(&sci->sc_iput_work)){....}-{0:0}, at: process_scheduled_works+0x37b/0x8e0 kernel/workqueue.c:3319
#2: ffff88810c33a600 (sb_internal#2){....}-{0:0}, at: nilfs_evict_inode+0xb8/0x220 fs/nilfs2/inode.c:859
3 locks held by kworker/1:5/5307:
#0: ffff888100078748 ((wq_completion)events){....}-{0:0}, at: process_one_work kernel/workqueue.c:3213 [inline]
#0: ffff888100078748 ((wq_completion)events){....}-{0:0}, at: process_scheduled_works+0x354/0x8e0 kernel/workqueue.c:3319
#1: ffffc900025c7e30 ((work_completion)(&sci->sc_iput_work)){....}-{0:0}, at: process_one_work kernel/workqueue.c:3214 [inline]
#1: ffffc900025c7e30 ((work_completion)(&sci->sc_iput_work)){....}-{0:0}, at: process_scheduled_works+0x37b/0x8e0 kernel/workqueue.c:3319
#2: ffff888104fd4600 (sb_internal#2){....}-{0:0}, at: nilfs_evict_inode+0xb8/0x220 fs/nilfs2/inode.c:859
4 locks held by syz.1.17/6673:
#0: ffff888108feb410 (sb_writers#12){....}-{0:0}, at: filename_create+0xc4/0x230 fs/namei.c:4125
#1: ffff888163192bc0 (&type->i_mutex_dir_key#8/1){....}-{3:3}, at: inode_lock_nested include/linux/fs.h:902 [inline]
#1: ffff888163192bc0 (&type->i_mutex_dir_key#8/1){....}-{3:3}, at: filename_create+0x10a/0x230 fs/namei.c:4132
#2: ffff888108feb600 (sb_internal#2){....}-{0:0}, at: nilfs_mkdir+0x54/0x1d0 fs/nilfs2/namei.c:228
#3: ffff88816ce9daa0 (&nilfs->ns_segctor_sem){....}-{3:3}, at: nilfs_transaction_begin+0x1a7/0x520 fs/nilfs2/segment.c:221
1 lock held by segctord/6702:
#0: ffff88816ce9daa0 (&nilfs->ns_segctor_sem){....}-{3:3}, at: nilfs_transaction_lock+0xc6/0x360 fs/nilfs2/segment.c:357
4 locks held by syz.7.778/9657:
#0: ffff88810dafa410 (sb_writers#12){....}-{0:0}, at: filename_create+0xc4/0x230 fs/namei.c:4125
#1: ffff8881631d6c60 (&type->i_mutex_dir_key#8/1){....}-{3:3}, at: inode_lock_nested include/linux/fs.h:902 [inline]
#1: ffff8881631d6c60 (&type->i_mutex_dir_key#8/1){....}-{3:3}, at: filename_create+0x10a/0x230 fs/namei.c:4132
#2: ffff88810dafa600 (sb_internal#2){....}-{0:0}, at: nilfs_mkdir+0x54/0x1d0 fs/nilfs2/namei.c:228
#3: ffff888160afc2a0 (&nilfs->ns_segctor_sem){....}-{3:3}, at: nilfs_transaction_begin+0x1a7/0x520 fs/nilfs2/segment.c:221
1 lock held by segctord/9667:
#0: ffff888160afc2a0 (&nilfs->ns_segctor_sem){....}-{3:3}, at: nilfs_transaction_lock+0xc6/0x360 fs/nilfs2/segment.c:357
4 locks held by syz.6.1842/13259:
#0: ffff888164e16410 (sb_writers#12){....}-{0:0}, at: filename_create+0xc4/0x230 fs/namei.c:4125
#1: ffff8881631d31a0 (&type->i_mutex_dir_key#8/1){....}-{3:3}, at: inode_lock_nested include/linux/fs.h:902 [inline]
#1: ffff8881631d31a0 (&type->i_mutex_dir_key#8/1){....}-{3:3}, at: filename_create+0x10a/0x230 fs/namei.c:4132
#2: ffff888164e16600 (sb_internal#2){....}-{0:0}, at: nilfs_mkdir+0x54/0x1d0 fs/nilfs2/namei.c:228
#3: ffff88816219b2a0 (&nilfs->ns_segctor_sem){....}-{3:3}, at: nilfs_transaction_begin+0x1a7/0x520 fs/nilfs2/segment.c:221
1 lock held by segctord/13266:
#0: ffff88816219b2a0 (&nilfs->ns_segctor_sem){....}-{3:3}, at: nilfs_transaction_lock+0xc6/0x360 fs/nilfs2/segment.c:357
1 lock held by syz-executor/16913:
#0: ffffffff85003d78 (rcu_state.exp_mutex){....}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:336 [inline]
#0: ffffffff85003d78 (rcu_state.exp_mutex){....}-{3:3}, at: synchronize_rcu_expedited+0x179/0x620 kernel/rcu/tree_exp.h:998
4 locks held by syz.9.2897/17957:
#0: ffff88810c33a410 (sb_writers#12){....}-{0:0}, at: filename_create+0xc4/0x230 fs/namei.c:4125
#1: ffff88816311a5e0 (&type->i_mutex_dir_key#8/1){....}-{3:3}, at: inode_lock_nested include/linux/fs.h:902 [inline]
#1: ffff88816311a5e0 (&type->i_mutex_dir_key#8/1){....}-{3:3}, at: filename_create+0x10a/0x230 fs/namei.c:4132
#2: ffff88810c33a600 (sb_internal#2){....}-{0:0}, at: nilfs_mkdir+0x54/0x1d0 fs/nilfs2/namei.c:228
#3: ffff888179c992a0 (&nilfs->ns_segctor_sem){....}-{3:3}, at: nilfs_transaction_begin+0x1a7/0x520 fs/nilfs2/segment.c:221
1 lock held by segctord/17964:
#0: ffff888179c992a0 (&nilfs->ns_segctor_sem){....}-{3:3}, at: nilfs_transaction_lock+0xc6/0x360 fs/nilfs2/segment.c:357
1 lock held by syz-executor/19526:
#0: ffffffff85003d78 (rcu_state.exp_mutex){....}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:336 [inline]
#0: ffffffff85003d78 (rcu_state.exp_mutex){....}-{3:3}, at: synchronize_rcu_expedited+0x179/0x620 kernel/rcu/tree_exp.h:998
4 locks held by syz.5.3325/20197:
#0: ffff888104fd4410 (sb_writers#12){....}-{0:0}, at: filename_create+0xc4/0x230 fs/namei.c:4125
#1: ffff8881631d9440 (&type->i_mutex_dir_key#8/1){....}-{3:3}, at: inode_lock_nested include/linux/fs.h:902 [inline]
#1: ffff8881631d9440 (&type->i_mutex_dir_key#8/1){....}-{3:3}, at: filename_create+0x10a/0x230 fs/namei.c:4132
#2: ffff888104fd4600 (sb_internal#2){....}-{0:0}, at: nilfs_mkdir+0x54/0x1d0 fs/nilfs2/namei.c:228
#3: ffff8881641912a0 (&nilfs->ns_segctor_sem){....}-{3:3}, at: nilfs_transaction_begin+0x1a7/0x520 fs/nilfs2/segment.c:221
1 lock held by segctord/20213:
#0: ffff8881641912a0 (&nilfs->ns_segctor_sem){....}-{3:3}, at: nilfs_transaction_lock+0xc6/0x360 fs/nilfs2/segment.c:357
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.15.0-rc3-syzkaller #0 PREEMPT(undef)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025
Call Trace:
dump_stack_lvl+0x11f/0x1b0 lib/dump_stack.c:120
nmi_cpu_backtrace+0x227/0x240 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0xea/0x200 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:158 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:274 [inline]
watchdog+0x8ff/0x940 kernel/hung_task.c:437
kthread+0x2ba/0x300 kernel/kthread.c:464
ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 12 Comm: kworker/u8:0 Not tainted 6.15.0-rc3-syzkaller #0 PREEMPT(undef)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:text_poke_bp_batch+0x2fa/0x440 arch/x86/kernel/alternative.c:2740
Code: 00 4c 8d 74 24 2a 45 0f b6 7d fe 45 0f b6 65 00 bf 06 00 00 00 44 89 fe e8 a3 a3 21 00 41 83 ff 06 44 0f 44 e3 44 88 64 24 2a <45> 0f b6 fc bf cc 00 00 00 44 89 fe e8 85 a3 21 00 41 80 ff cc 75
RSP: 0018:ffffc9000006bcf8 EFLAGS: 00000297
RAX: ffffffff81377c4d RBX: 000000000000000f RCX: 0000000000000000
RDX: ffff8881012d5340 RSI: 0000000000000005 RDI: 0000000000000006
RBP: 0000000000000004 R08: 000000000000000f R09: 000000000000003b
R10: 0000000000000006 R11: ffffffff81376fb0 R12: 000000000000000f
R13: ffffffff86a74b4a R14: ffffc9000006bd22 R15: 0000000000000005
FS: 0000000000000000(0000) GS:ffff8882b12db000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fffb0ad7bf8 CR3: 0000000004eca000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
text_poke_flush arch/x86/kernel/alternative.c:2856 [inline]
text_poke_finish+0x30/0x50 arch/x86/kernel/alternative.c:2863
arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146
static_key_disable_cpuslocked kernel/jump_label.c:240 [inline]
static_key_disable+0x64/0x90 kernel/jump_label.c:248
toggle_allocation_gate+0x107/0x150 mm/kfence/core.c:855
process_one_work kernel/workqueue.c:3238 [inline]
process_scheduled_works+0x3e9/0x8e0 kernel/workqueue.c:3319
worker_thread+0x36d/0x4e0 kernel/workqueue.c:3400
kthread+0x2ba/0x300 kernel/kthread.c:464
ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245