ci2 starts bisection 2025-10-19 14:08:41.41921763 +0000 UTC m=+145891.055316219 bisecting fixing commit since c8bc81a52d5a2ac2e4b257ae123677cf94112755 building syzkaller on 807a3b61ca22f8988561c180eb47268ea6e244db ensuring issue is reproducible on original commit c8bc81a52d5a2ac2e4b257ae123677cf94112755 testing commit c8bc81a52d5a2ac2e4b257ae123677cf94112755 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 1441413f479ae7a2905a059dea473ccf2365bb6b8fbf36bcb69aa1626a87c33a run #0: crashed: INFO: task hung in writeback_iter run #1: crashed: INFO: task hung in writeback_iter run #2: crashed: INFO: task hung in writeback_iter run #3: crashed: INFO: task hung in writeback_iter run #4: crashed: INFO: task hung in writeback_iter run #5: crashed: INFO: task hung in writeback_iter run #6: crashed: INFO: task hung in hfs_mdb_commit run #7: crashed: INFO: task hung in writeback_iter run #8: crashed: INFO: task hung in writeback_iter run #9: crashed: INFO: task hung in writeback_iter run #10: crashed: INFO: task hung in writeback_iter run #11: crashed: INFO: task hung in writeback_iter run #12: crashed: INFO: task hung in hfs_mdb_commit run #13: crashed: INFO: task hung in writeback_iter run #14: crashed: INFO: task hung in writeback_iter run #15: crashed: INFO: task hung in writeback_iter run #16: crashed: INFO: task hung in bdev_release run #17: crashed: INFO: task hung in hfs_mdb_commit run #18: crashed: INFO: task hung in hfs_mdb_commit run #19: crashed: INFO: task hung in hfs_mdb_commit representative crash: INFO: task hung in writeback_iter, types: [HANG] check whether we can drop unnecessary instrumentation disabling configs for [ubsan bug_or_warning kasan locking atomic_sleep memleak], they are not needed testing commit c8bc81a52d5a2ac2e4b257ae123677cf94112755 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 7de74f4a80251023144a50e6d9e31a15dd700621b4f0948d33ae01a0f0ee1cc1 run #0: crashed: INFO: task hung in hfs_mdb_commit run #1: crashed: INFO: task hung in writeback_iter run #2: crashed: INFO: task hung in hfs_mdb_commit run #3: crashed: INFO: task hung in writeback_iter run #4: crashed: INFO: task hung in hfs_mdb_commit run #5: crashed: INFO: task hung in hfs_mdb_commit run #6: crashed: INFO: task hung in hfs_mdb_commit run #7: crashed: INFO: task hung in bdev_release run #8: crashed: INFO: task hung in hfs_mdb_commit run #9: crashed: INFO: task hung in deactivate_super representative crash: INFO: task hung in hfs_mdb_commit, types: [HANG] the bug reproduces without the instrumentation disabling configs for [locking atomic_sleep memleak ubsan bug_or_warning kasan], they are not needed kconfig minimization: base=4108 full=8349 leaves diff=2173 split chunks (needed=false): <2173> split chunk #0 of len 2173 into 5 parts testing without sub-chunk 1/5 disabling configs for [memleak ubsan bug_or_warning kasan locking atomic_sleep], they are not needed testing commit c8bc81a52d5a2ac2e4b257ae123677cf94112755 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 246874ed9f5630739f60b76f384a9a1e32afbec12038739280437c639196c926 run #0: crashed: INFO: task hung in hfs_mdb_commit run #1: crashed: INFO: task hung in writeback_iter run #2: crashed: INFO: task hung in writeback_iter run #3: crashed: INFO: task hung in hfs_mdb_commit run #4: crashed: INFO: task hung in bdev_open run #5: crashed: INFO: task hung in writeback_iter run #6: crashed: INFO: task hung in hfs_mdb_commit run #7: crashed: INFO: task hung in writeback_iter run #8: crashed: INFO: task hung in hfs_mdb_commit run #9: crashed: INFO: task hung in writeback_iter representative crash: INFO: task hung in hfs_mdb_commit, types: [HANG] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [bug_or_warning kasan locking atomic_sleep memleak ubsan], they are not needed testing commit c8bc81a52d5a2ac2e4b257ae123677cf94112755 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: cde392d7865e40647353c7c6da58d454358ddac3486c424b6bf797e27ce8a99e all runs: OK false negative chance: 0.000 testing without sub-chunk 3/5 disabling configs for [atomic_sleep memleak ubsan bug_or_warning kasan locking], they are not needed testing commit c8bc81a52d5a2ac2e4b257ae123677cf94112755 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: b89a10f86cb6b904302e26fc2548fddde36a36740c8db7c5989627fbb17c9f4e run #0: crashed: INFO: task hung in hfs_mdb_commit run #1: crashed: INFO: task hung in hfs_mdb_commit run #2: crashed: INFO: task hung in deactivate_super run #3: crashed: INFO: task hung in writeback_iter run #4: crashed: INFO: task hung in hfs_mdb_commit run #5: crashed: INFO: task hung in writeback_iter run #6: crashed: INFO: task hung in hfs_mdb_commit run #7: crashed: INFO: task hung in bdev_release run #8: crashed: INFO: task hung in hfs_mdb_commit run #9: crashed: INFO: task hung in hfs_mdb_commit representative crash: INFO: task hung in hfs_mdb_commit, types: [HANG] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [atomic_sleep memleak ubsan bug_or_warning kasan locking], they are not needed testing commit c8bc81a52d5a2ac2e4b257ae123677cf94112755 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 7180ea0e2b877abb5f30084b22735eaca620e83b515c770dd0a465ef98c541a6 all runs: OK false negative chance: 0.000 testing without sub-chunk 5/5 disabling configs for [memleak ubsan bug_or_warning kasan locking atomic_sleep], they are not needed testing commit c8bc81a52d5a2ac2e4b257ae123677cf94112755 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: e07d85d11088c98144dec49f6e28929527464d153482d03ec00a29f93dc1409f run #0: crashed: INFO: task hung in hfs_mdb_commit run #1: crashed: INFO: task hung in hfs_mdb_commit run #2: crashed: INFO: task hung in writeback_iter run #3: crashed: INFO: task hung in hfs_mdb_commit run #4: crashed: INFO: task hung in writeback_iter run #5: crashed: INFO: task hung in writeback_iter run #6: crashed: INFO: task hung in writeback_iter run #7: crashed: INFO: task hung in hfs_mdb_commit run #8: crashed: INFO: task hung in hfs_mdb_commit run #9: crashed: INFO: task hung in corrupted representative crash: INFO: task hung in hfs_mdb_commit, types: [HANG] the chunk can be dropped minimized to 870 configs; suspects: [6LOWPAN AF_RXRPC ARCH_ENABLE_MEMORY_HOTREMOVE ASUS_WMI ATM AX25 BLK_DEV_ZONED BT BT_BREDR BT_HIDP BXT_WC_PMIC_OPREGION CFG80211 CHARGER_BQ24190 CMA COMMON_CLK DAX DEVICE_PRIVATE DEV_COREDUMP DLM DLN2_ADC DMABUF_HEAPS DMABUF_HEAPS_CMA DMABUF_HEAPS_CMA_LEGACY DMABUF_HEAPS_SYSTEM DMABUF_MOVE_NOTIFY DMA_CMA DMA_ENGINE_RAID DM_AUDIT DM_BIO_PRISON DM_BUFIO DM_CACHE DM_CACHE_SMQ DM_CLONE DM_CRYPT DM_FLAKEY DM_INTEGRITY DM_MULTIPATH DM_MULTIPATH_QL DM_MULTIPATH_ST DM_PERSISTENT_DATA DM_RAID DM_SNAPSHOT DM_THIN_PROVISIONING DM_UEVENT DM_VERITY DM_VERITY_FEC DM_WRITECACHE DM_ZONED DRAGONRISE_FF DRM DRM_AUX_BRIDGE DRM_BOCHS DRM_BRIDGE DRM_CIRRUS_QEMU DRM_CLIENT DRM_CLIENT_DEFAULT_FBDEV DRM_CLIENT_LIB DRM_CLIENT_SELECTION DRM_CLIENT_SETUP DRM_DEBUG_MM DRM_DISPLAY_DP_AUX_BUS DRM_DISPLAY_DP_HELPER DRM_DISPLAY_HELPER DRM_FBDEV_EMULATION DRM_GEM_SHMEM_HELPER DRM_GM12U320 DRM_GUD DRM_KMS_HELPER DRM_PANEL DRM_PANEL_BRIDGE DRM_PANEL_EDP DRM_PANEL_ORIENTATION_QUIRKS DRM_SIMPLEDRM DRM_SYSFB_HELPER 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_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_VDSO_DATA_STORE GENERIC_VDSO_TIME_NS GENEVE 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 GROUP_SCHED_BANDWIDTH GTP GUEST_PERF_EVENTS HAMRADIO HAS_LTO_CLANG HAVE_ARCH_NODE_DEV_GROUP HAVE_ARCH_USERFAULTFD_MINOR HAVE_ARCH_USERFAULTFD_WP HAVE_BOOTMEM_INFO_NODE HAVE_CFI_ICALL_NORMALIZE_INTEGERS_CLANG HAVE_CLK 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_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_DRAGONRISE 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_NVIDIA_SHIELD HID_ORTEK HID_PENMOUNT HID_PICOLCD HID_PICOLCD_BACKLIGHT HID_PICOLCD_CIR HID_PICOLCD_FB HID_PICOLCD_LCD HID_PICOLCD_LEDS HID_PLANTRONICS HID_PLAYSTATION 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_SMARTJOYPLUS HID_SPEEDLINK HID_STEAM HID_STEELSERIES HID_THINGM HID_THRUSTMASTER 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_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 INFINIBAND_VIRT_DMA INPUT_ATI_REMOTE2 INPUT_CM109 INPUT_IMS_PCU INPUT_JOYDEV INPUT_KEYSPAN_REMOTE INPUT_LEDS INPUT_MOUSEDEV INPUT_MOUSEDEV_PSAUX INPUT_POWERMATE INPUT_TABLET INPUT_TOUCHSCREEN 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_SCU_IPC INTEL_SOC_PMIC_BXTWC 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_TARGET_NPT IP6_NF_TARGET_REJECT 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_FIB_TRIE_STATS IP_MROUTE_MULTIPLE_TABLES IP_NF_ARP_MANGLE IP_NF_MATCH_AH IP_NF_MATCH_ECN IP_NF_MATCH_RPFILTER IP_NF_MATCH_TTL IP_NF_TARGET_ECN IP_NF_TARGET_REJECT IP_SCTP IRQ_TIME_ACCOUNTING L2TP LAPB LCD_CLASS_DEVICE LEDS_CLASS_MULTICOLOR LIBNVDIMM MAC80211 MAC802154 MEDIA_COMMON_OPTIONS MEDIA_DIGITAL_TV_SUPPORT MEDIA_PLATFORM_SUPPORT MEDIA_RADIO_SUPPORT MEDIA_SDR_SUPPORT MEDIA_SUPPORT MEDIA_TEST_SUPPORT MEDIA_USB_SUPPORT MEMORY_HOTPLUG MEMORY_HOTREMOVE MFD_DLN2 MFD_INTEL_PMC_BXT MFD_MT6360 MFD_MT6370 MFD_RETU MFD_VIPERBOARD MMC MODVERSIONS MPTCP MTD MTD_UBI NETFILTER_ADVANCED NETFILTER_CONNCOUNT NET_ACT_GACT NET_ACT_MIRRED NET_IPGRE NET_IPGRE_DEMUX NFS_V4_1 NFT_COMPAT NFT_COMPAT_ARP NFT_FWD_NETDEV NF_SOCKET_IPV4 NF_SOCKET_IPV6 NF_TABLES NF_TABLES_ARP NF_TABLES_NETDEV NF_TPROXY_IPV4 NF_TPROXY_IPV6 NILFS2_FS NINTENDO_FF NLMON NLS_CODEPAGE_1250 NLS_CODEPAGE_1251 NLS_CODEPAGE_737 NLS_CODEPAGE_775 NLS_CODEPAGE_850 NLS_CODEPAGE_852 NLS_CODEPAGE_855 NLS_CODEPAGE_857 NLS_CODEPAGE_860 NLS_CODEPAGE_861 NLS_CODEPAGE_862 NLS_CODEPAGE_863 NLS_CODEPAGE_864 NLS_CODEPAGE_865 NLS_CODEPAGE_866 NLS_CODEPAGE_869 NLS_CODEPAGE_874 NLS_CODEPAGE_932 NLS_CODEPAGE_936 NLS_CODEPAGE_949 NLS_CODEPAGE_950 NLS_ISO8859_13 NLS_ISO8859_14 NLS_ISO8859_15 NLS_ISO8859_2 NLS_ISO8859_3 NLS_ISO8859_4 NLS_ISO8859_5 NLS_ISO8859_6 NLS_ISO8859_7 NLS_ISO8859_8 NLS_ISO8859_9 NLS_KOI8_R NLS_KOI8_U NLS_MAC_CELTIC NLS_MAC_CENTEURO NLS_MAC_CROATIAN NLS_MAC_CYRILLIC NLS_MAC_GAELIC NLS_MAC_GREEK NLS_MAC_ICELAND NLS_MAC_INUIT NLS_MAC_ROMAN NLS_MAC_ROMANIAN NLS_MAC_TURKISH NLS_UCS2_UTILS NOZOMI NTFS3_FS NTFS3_FS_POSIX_ACL NTFS3_LZX_XPRESS NULL_TTY NUMA_EMU NUMA_KEEP_MEMINFO NVDIMM_DAX NVDIMM_KEYS NVDIMM_PFN NVIDIA_SHIELD_FF NVME_CORE NVME_FABRICS NVME_FC NVME_MULTIPATH NVME_RDMA NVME_TARGET NVME_TARGET_FC NVME_TARGET_FCLOOP NVME_TARGET_LOOP NVME_TARGET_RDMA NVME_TARGET_TCP NVME_TCP N_GSM N_HDLC OCFS2_DEBUG_FS OCFS2_FS OCFS2_FS_O2CB OCFS2_FS_STATS OCFS2_FS_USERSPACE_CLUSTER OF_GPIO OF_PMEM OMFS_FS OPENVSWITCH OPENVSWITCH_GENEVE OPENVSWITCH_GRE OPENVSWITCH_VXLAN ORANGEFS_FS OSF_PARTITION OVERLAY_FS OVERLAY_FS_DEBUG OVERLAY_FS_INDEX OVERLAY_FS_REDIRECT_ALWAYS_FOLLOW OVERLAY_FS_REDIRECT_DIR PACKET_DIAG PAGE_IDLE_FLAG PAGE_REPORTING PAHOLE_HAS_BTF_TAG PAHOLE_HAS_LANG_EXCLUDE PAHOLE_HAS_SPLIT_BTF PARPORT PARPORT_NOT_PC PARTITION_ADVANCED PCCARD PCCARD_NONSTATIC PCIEAER PCI_ENDPOINT PCI_IOV PCMCIA PCMCIA_LOAD_CIS PERCPU_STATS PERSISTENT_KEYRINGS PHYLINK PHY_CPCAP_USB PHY_QCOM_USB_HS PHY_QCOM_USB_HSIC PHY_SAMSUNG_USB2 PHY_TUSB1210 PKCS7_TEST_KEY PKCS8_PRIVATE_KEY_PARSER PLAYSTATION_FF PLFXLC PMIC_OPREGION PM_CLK PNFS_BLOCK PNFS_FILE_LAYOUT PNFS_FLEXFILE_LAYOUT PPP PPPOATM PPPOE PPPOE_HASH_BITS_1 PPPOL2TP PPP_ASYNC PPP_BSDCOMP PPP_DEFLATE PPP_FILTER PPP_MPPE PPP_MULTILINK PPP_SYNC_TTY PPTP PREEMPT PREEMPT_NOTIFIERS PREEMPT_RT PROC_CHILDREN PSAMPLE PSI PSTORE PSTORE_COMPRESS QCOM_QMI_HELPERS QNX4FS_FS QNX6FS_FS QRTR QRTR_TUN RADIO_ADAPTERS RADIO_SHARK RADIO_SHARK2 RADIO_SI4713 RADIO_TEA575X RAID6_PQ RAID_ATTRS RAS RC_ATI_REMOTE RC_CORE RC_DEVICES RC_XBOX_DVD RDMA_RXE RDMA_SIW RDS RDS_RDMA RDS_TCP REALTEK_AUTOPM REED_SOLOMON REED_SOLOMON_DEC8 REGMAP REGMAP_I2C REGMAP_IRQ REGMAP_MMIO REGMAP_SPI REGULATOR REGULATOR_FIXED_VOLTAGE REGULATOR_TWL4030 RESET_CONTROLLER RFKILL RFKILL_INPUT RFKILL_LEDS RMI4_2D_SENSOR RMI4_CORE RMI4_F03 RMI4_F03_SERIO RMI4_F11 RMI4_F12 RMI4_F30 RMI4_F3A ROMFS_BACKED_BY_BOTH ROMFS_FS ROMFS_ON_BLOCK ROMFS_ON_MTD ROSE RTC_DRV_HID_SENSOR_TIME RXKAD SCHED_CORE SCREEN_INFO SCSI_FC_ATTRS SCSI_HPSA SCSI_ISCSI_ATTRS SCSI_LOGGING SCSI_NETLINK SCSI_SAS_ATA SCSI_SAS_ATTRS SCSI_SAS_LIBSAS SCSI_SCAN_ASYNC SCSI_SRP_ATTRS SCTP_COOKIE_HMAC_MD5 SCTP_COOKIE_HMAC_SHA1 SCTP_DEFAULT_COOKIE_HMAC_MD5 SECONDARY_TRUSTED_KEYRING SECURITY_INFINIBAND SECURITY_NETWORK_XFRM SECURITY_SMACK_NETFILTER SENSORS_AQUACOMPUTER_D5NEXT SENSORS_CORSAIR_CPRO SENSORS_CORSAIR_PSU SENSORS_GIGABYTE_WATERFORCE SENSORS_NZXT_KRAKEN2 SENSORS_NZXT_SMART2 SENSORS_POWERZ SERIAL_DEV_BUS SERIAL_DEV_CTRL_TTYPORT SERIAL_MCTRL_GPIO SGI_PARTITION SIGNATURE SIGNED_PE_FILE_VERIFICATION SKB_DECRYPTED SLHC SLIP SLIP_COMPRESSED SLIP_MODE_SLIP6 SLIP_SMART SMARTJOYPLUS_FF SMBFS SMB_SERVER SMC SMC_DIAG SMSC_PHY SMS_SDIO_DRV SMS_SIANO_DEBUGFS SMS_SIANO_MDTV SMS_SIANO_RC SMS_USB_DRV SND SND_ALOOP SND_BCD2000 SND_CTL_FAST_LOOKUP SND_CTL_LED SND_DEBUG SND_DMA_SGBUF SND_DRIVERS SND_DUMMY SND_DYNAMIC_MINORS SND_HDA SND_HDA_CODEC_ALC260 SND_HDA_CODEC_ALC262 SND_HDA_CODEC_ALC268 SND_HDA_CODEC_ALC269 SND_HDA_CODEC_ALC662 SND_HDA_CODEC_ALC680 SND_HDA_CODEC_ALC861 SND_HDA_CODEC_ALC861VD SND_HDA_CODEC_ALC880 SND_HDA_CODEC_ALC882 SND_HDA_CODEC_ANALOG SND_HDA_CODEC_CA0110 SND_HDA_CODEC_CA0132 SND_HDA_CODEC_CIRRUS SND_HDA_CODEC_CMEDIA SND_HDA_CODEC_CONEXANT SND_HDA_CODEC_CS420X SND_HDA_CODEC_CS421X SND_HDA_CODEC_HDMI SND_HDA_CODEC_HDMI_ATI SND_HDA_CODEC_HDMI_GENERIC SND_HDA_CODEC_HDMI_INTEL SND_HDA_CODEC_HDMI_NVIDIA SND_HDA_CODEC_HDMI_NVIDIA_MCP SND_HDA_CODEC_HDMI_SIMPLE SND_HDA_CODEC_HDMI_TEGRA SND_HDA_CODEC_REALTEK SND_HDA_CODEC_REALTEK_LIB SND_HDA_CODEC_SI3054 SND_HDA_CODEC_SIGMATEL SND_HDA_CODEC_VIA SND_HDA_CORE SND_HDA_GENERIC SND_HDA_GENERIC_LEDS SND_HDA_HWDEP SND_HDA_INPUT_BEEP SND_HDA_INTEL SND_HDA_PATCH_LOADER SND_HDA_RECONFIG SND_HDA_SCODEC_COMPONENT SND_HRTIMER SND_HWDEP SND_INTEL_DSP_CONFIG SND_INTEL_NHLT SND_INTEL_SOUNDWIRE_ACPI SND_JACK SND_JACK_INPUT_DEV SND_MIXER_OSS SND_OSSEMUL SND_PCI SND_PCM SND_PCMCIA SND_PCM_ELD SND_PCM_OSS SND_PCM_OSS_PLUGINS SND_PCM_TIMER SND_PCM_XRUN_DEBUG SND_PROC_FS SND_RAWMIDI SND_SEQUENCER SND_SEQUENCER_OSS SND_SEQ_DEVICE SND_SEQ_DUMMY SND_SEQ_HRTIMER_DEFAULT SND_SEQ_MIDI SND_SEQ_MIDI_EVENT SND_SEQ_VIRMIDI SND_SOC SND_SOC_I2C_AND_SPI SND_SOC_SDCA_OPTIONAL SND_SUPPORT_OLD_API SND_TIMER SND_UMP SND_UMP_LEGACY_RAWMIDI SND_USB SND_USB_6FIRE SND_USB_AUDIO SND_USB_AUDIO_MIDI_V2 SND_USB_AUDIO_USE_MEDIA_CONTROLLER SND_USB_CAIAQ SND_USB_CAIAQ_INPUT SND_USB_HIFACE SND_USB_LINE6 SND_USB_POD SND_USB_PODHD SND_USB_TONEPORT SND_USB_UA101 SND_USB_US122L SND_USB_USX2Y SND_USB_VARIAX SND_VERBOSE_PROCFS SND_VIRMIDI SND_VIRTIO SND_VMASTER SND_X86 SOCK_VALIDATE_XMIT SOLARIS_X86_PARTITION SONY_FF SOUND SOUNDWIRE SOUND_OSS_CORE SOUND_OSS_CORE_PRECLAIM SPI SPI_DLN2 SPI_DYNAMIC SPI_LJCA SPI_MASTER SQUASHFS SQUASHFS_4K_DEVBLK_SIZE SQUASHFS_COMPILE_DECOMP_MULTI SQUASHFS_DECOMP_MULTI SQUASHFS_FILE_DIRECT SQUASHFS_LZ4 SQUASHFS_LZO SQUASHFS_XATTR SQUASHFS_XZ SQUASHFS_ZLIB SQUASHFS_ZSTD SSB SSB_PCIHOST_POSSIBLE SSB_PCMCIAHOST_POSSIBLE SSB_SDIOHOST_POSSIBLE STAGING STEAM_FF STP STREAM_PARSER SUNRPC_BACKCHANNEL SUN_PARTITION SURFACE_AGGREGATOR SURFACE_AGGREGATOR_BUS SURFACE_AGGREGATOR_REGISTRY SURFACE_HID SURFACE_HID_CORE SURFACE_KBD SW_SYNC SYSFB SYSFS_SYSCALL SYSV68_PARTITION TABLET_USB_ACECAD TABLET_USB_AIPTEK TABLET_USB_HANWANG TABLET_USB_KBTAB TABLET_USB_PEGASUS TAHVO_USB TAHVO_USB_HOST_BY_DEFAULT TCG_CRB TCG_TIS TCG_TIS_CORE TCG_TPM TCP_CONG_BBR TCP_CONG_BIC TCP_CONG_CDG TCP_CONG_DCTCP TCP_CONG_HSTCP TCP_CONG_HTCP TCP_CONG_HYBLA TCP_CONG_ILLINOIS TCP_CONG_LP TCP_CONG_NV TCP_CONG_SCALABLE TCP_CONG_VEGAS TCP_CONG_VENO TCP_CONG_WESTWOOD TCP_CONG_YEAH TEE TEXTSEARCH TEXTSEARCH_BM TEXTSEARCH_FSM TEXTSEARCH_KMP THRUSTMASTER_FF TIPC TIPC_CRYPTO TIPC_DIAG TIPC_MEDIA_IB TIPC_MEDIA_UDP TLS TLS_TOE TMPFS_QUOTA TOOLS_SUPPORT_RELR TOUCHSCREEN_SUR40 TOUCHSCREEN_USB_3M TOUCHSCREEN_USB_COMPOSITE TOUCHSCREEN_USB_DMC_TSC10 TOUCHSCREEN_USB_E2I TOUCHSCREEN_USB_EASYTOUCH TOUCHSCREEN_USB_EGALAX TOUCHSCREEN_USB_ELO TOUCHSCREEN_USB_ETT_TC45USB TOUCHSCREEN_USB_ETURBO TOUCHSCREEN_USB_GENERAL_TOUCH TOUCHSCREEN_USB_GOTOP TOUCHSCREEN_USB_GUNZE TOUCHSCREEN_USB_IDEALTEK TOUCHSCREEN_USB_IRTOUCH TOUCHSCREEN_USB_ITM TOUCHSCREEN_USB_JASTEC TOUCHSCREEN_USB_NEXIO TOUCHSCREEN_USB_PANJIT TOUCHSCREEN_USB_ZYTRONIC TRUSTED_KEYS TTPCI_EEPROM TTY_PRINTK TUN_VNET_CROSS_LE TWL4030_CORE TYPEC TYPEC_ANX7411 TYPEC_DP_ALTMODE TYPEC_FUSB302 TYPEC_HD3SS3220 TYPEC_MT6360 TYPEC_MUX_FSA4480 TYPEC_MUX_GPIO_SBU TYPEC_MUX_INTEL_PMC TYPEC_MUX_NB7VPQ904M TYPEC_MUX_PI3USB30532 TYPEC_MUX_PTN36502 TYPEC_MUX_WCD939X_USBSS TYPEC_NVIDIA_ALTMODE TYPEC_RT1711H TYPEC_RT1719 TYPEC_STUSB160X TYPEC_TCPCI TYPEC_TCPCI_MAXIM TYPEC_TCPCI_MT6370 TYPEC_TCPM TYPEC_TPS6598X TYPEC_UCSI TYPEC_WCOVE TYPEC_WUSB3801 UBIFS_ATIME_SUPPORT UBIFS_FS UBIFS_FS_ADVANCED_COMPR UBIFS_FS_LZO UBIFS_FS_SECURITY UBIFS_FS_XATTR UBIFS_FS_ZLIB UBIFS_FS_ZSTD UCSI_ACPI UCSI_CCG UCSI_STM32G0 UDF_FS UDMABUF UFS_FS UFS_FS_WRITE UHID ULTRIX_PARTITION UNICODE UNIXWARE_DISKLABEL UNIX_DIAG USB4 USB4_NET USBIP_CORE USBIP_HOST USBIP_VHCI_HCD USBIP_VUDC USBPCWATCHDOG USB_ACM USB_ADUTUX USB_DWC2 USB_GADGET USB_LJCA USB_MUSB_HDRC USB_ROLES_INTEL_XHCI USB_ROLE_SWITCH USB_STORAGE_REALTEK USB_ULPI_BUS VIDEO_DEV VIRTIO_FS VXLAN WAN WIRELESS WLAN WLAN_VENDOR_PURELIFI ZONE_DEVICE] disabling configs for [memleak ubsan bug_or_warning kasan locking atomic_sleep], they are not needed testing current HEAD 1c64efcb083c48c85227cb4d72ab137feef2cdac testing commit 1c64efcb083c48c85227cb4d72ab137feef2cdac gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 2fdc28df27ecdc652a42f5faac61eae844fd5585780ad2f654c7d7a869af7853 run #0: crashed: INFO: task hung in writeback_iter run #1: crashed: INFO: task hung in bdev_open run #2: crashed: INFO: task hung in hfs_mdb_commit run #3: crashed: INFO: task hung in hfs_mdb_commit run #4: crashed: INFO: task hung in writeback_iter run #5: crashed: INFO: task hung in bdev_release run #6: crashed: INFO: task hung in hfs_mdb_commit run #7: crashed: INFO: task hung in writeback_iter run #8: crashed: INFO: task hung in hfs_mdb_commit run #9: crashed: INFO: task hung in writeback_iter representative crash: INFO: task hung in writeback_iter, types: [HANG] crash still not fixed/happens on the oldest tested release revisions tested: 8, total time: 3h47m35.406512206s (build: 2h27m40.740723384s, test: 1h4m35.16275159s) crash still not fixed or there were kernel test errors commit msg: Merge tag 'rust-rustfmt' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux crash: INFO: task hung in writeback_iter INFO: task kworker/u8:4:154 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/u8:4 state:D stack:12376 pid:154 tgid:154 ppid:2 task_flags:0x4208060 flags:0x00080000 Workqueue: writeback wb_workfn (flush-7:7) Call Trace: context_switch kernel/sched/core.c:5325 [inline] __schedule+0x6c5/0x1610 kernel/sched/core.c:6929 __schedule_loop kernel/sched/core.c:7011 [inline] schedule+0xac/0x140 kernel/sched/core.c:7026 io_schedule+0x3f/0x60 kernel/sched/core.c:7871 folio_wait_bit_common+0x203/0x3b0 mm/filemap.c:1330 folio_lock include/linux/pagemap.h:1141 [inline] writeback_get_folio mm/page-writeback.c:2468 [inline] writeback_iter+0x1de/0x350 mm/page-writeback.c:2562 blkdev_writepages+0x8e/0x100 block/fops.c:490 do_writepages+0xcd/0x1f0 mm/page-writeback.c:2604 __writeback_single_inode+0x44/0x3a0 fs/fs-writeback.c:1719 writeback_sb_inodes+0x290/0x630 fs/fs-writeback.c:2015 __writeback_inodes_wb+0x93/0xe0 fs/fs-writeback.c:2086 wb_writeback+0x19b/0x450 fs/fs-writeback.c:2197 wb_check_start_all fs/fs-writeback.c:2323 [inline] wb_do_writeback fs/fs-writeback.c:2349 [inline] wb_workfn+0x2d4/0x5a0 fs/fs-writeback.c:2382 process_one_work kernel/workqueue.c:3263 [inline] process_scheduled_works+0x2e7/0x5e0 kernel/workqueue.c:3346 worker_thread+0x20a/0x2f0 kernel/workqueue.c:3427 kthread+0x203/0x230 kernel/kthread.c:463 ret_from_fork+0xd2/0x1a0 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 INFO: task kworker/1:3:1105 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:3 state:D stack:13112 pid:1105 tgid:1105 ppid:2 task_flags:0x4208060 flags:0x00080000 Workqueue: events_long flush_mdb Call Trace: context_switch kernel/sched/core.c:5325 [inline] __schedule+0x6c5/0x1610 kernel/sched/core.c:6929 __schedule_loop kernel/sched/core.c:7011 [inline] schedule+0xac/0x140 kernel/sched/core.c:7026 io_schedule+0x3f/0x60 kernel/sched/core.c:7871 bit_wait_io+0xc/0x60 kernel/sched/wait_bit.c:250 __wait_on_bit_lock+0xc1/0x1d0 kernel/sched/wait_bit.c:93 out_of_line_wait_on_bit_lock+0x8f/0xb0 kernel/sched/wait_bit.c:120 lock_buffer include/linux/buffer_head.h:432 [inline] hfs_mdb_commit+0x3f/0x3d0 fs/hfs/mdb.c:271 process_one_work kernel/workqueue.c:3263 [inline] process_scheduled_works+0x2e7/0x5e0 kernel/workqueue.c:3346 worker_thread+0x20a/0x2f0 kernel/workqueue.c:3427 kthread+0x203/0x230 kernel/kthread.c:463 ret_from_fork+0xd2/0x1a0 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 INFO: task syz-executor:3920 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:11120 pid:3920 tgid:3920 ppid:1 task_flags:0x400140 flags:0x00080002 Call Trace: context_switch kernel/sched/core.c:5325 [inline] __schedule+0x6c5/0x1610 kernel/sched/core.c:6929 __schedule_loop kernel/sched/core.c:7011 [inline] rt_mutex_schedule+0x1c/0x80 kernel/sched/core.c:7307 rwbase_write_lock+0x152/0x360 kernel/locking/rwbase_rt.c:272 __super_lock fs/super.c:57 [inline] __super_lock_excl fs/super.c:72 [inline] deactivate_super+0x33/0x40 fs/super.c:505 cleanup_mnt+0x7c/0x130 fs/namespace.c:1327 task_work_run+0x87/0xb0 kernel/task_work.c:227 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop+0xbc/0xe0 kernel/entry/common.c:43 exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline] syscall_exit_to_user_mode_work include/linux/entry-common.h:175 [inline] syscall_exit_to_user_mode include/linux/entry-common.h:210 [inline] do_syscall_64+0x181/0x250 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f341f95ff17 RSP: 002b:00007ffcf2ca38c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 00007f341f9e1c05 RCX: 00007f341f95ff17 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffcf2ca3980 RBP: 00007ffcf2ca3980 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffcf2ca4a10 R13: 00007f341f9e1c05 R14: 0000000000012d83 R15: 00007ffcf2ca4a50 INFO: task udevd:5706 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:udevd state:D stack:12840 pid:5706 tgid:5706 ppid:2395 task_flags:0x400140 flags:0x00080001 Call Trace: context_switch kernel/sched/core.c:5325 [inline] __schedule+0x6c5/0x1610 kernel/sched/core.c:6929 __schedule_loop kernel/sched/core.c:7011 [inline] rt_mutex_schedule+0x1c/0x80 kernel/sched/core.c:7307 rt_mutex_slowlock_block+0x1dd/0x260 kernel/locking/rtmutex.c:1647 __rt_mutex_slowlock kernel/locking/rtmutex.c:1721 [inline] __rt_mutex_slowlock_locked kernel/locking/rtmutex.c:1760 [inline] rt_mutex_slowlock+0x142/0x300 kernel/locking/rtmutex.c:1800 __rt_mutex_lock kernel/locking/rtmutex.c:1815 [inline] __mutex_lock_common kernel/locking/rtmutex_api.c:536 [inline] mutex_lock_nested+0x9f/0xd0 kernel/locking/rtmutex_api.c:547 bdev_release+0x76/0x180 block/bdev.c:1128 blkdev_release+0xc/0x20 block/fops.c:709 __fput+0x114/0x2b0 fs/file_table.c:468 __do_sys_close fs/open.c:1589 [inline] __se_sys_close+0x7c/0xf0 fs/open.c:1574 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x8f/0x250 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fb7d535b407 RSP: 002b:00007fff71a779b0 EFLAGS: 00000202 ORIG_RAX: 0000000000000003 RAX: ffffffffffffffda RBX: 00007fb7d526d880 RCX: 00007fb7d535b407 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000008 RBP: 00007fb7d526d6e8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000002 R13: 000055ee8f04a190 R14: 0000000000000008 R15: 000055ee8f044650 INFO: task syz.6.200:5780 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.6.200 state:D stack:12744 pid:5780 tgid:5779 ppid:3928 task_flags:0x400040 flags:0x00080002 Call Trace: context_switch kernel/sched/core.c:5325 [inline] __schedule+0x6c5/0x1610 kernel/sched/core.c:6929 __schedule_loop kernel/sched/core.c:7011 [inline] schedule+0xac/0x140 kernel/sched/core.c:7026 io_schedule+0x3f/0x60 kernel/sched/core.c:7871 folio_wait_bit_common+0x203/0x3b0 mm/filemap.c:1330 folio_lock include/linux/pagemap.h:1141 [inline] __find_get_block_slow fs/buffer.c:205 [inline] find_get_block_common+0xea/0x560 fs/buffer.c:1408 bdev_getblk+0x2d/0x260 fs/buffer.c:-1 __bread_gfp+0x24/0xf0 fs/buffer.c:1515 sb_bread include/linux/buffer_head.h:346 [inline] hfs_mdb_commit+0x281/0x3d0 fs/hfs/mdb.c:324 hfs_sync_fs+0x9/0x20 fs/hfs/super.c:37 __iterate_supers+0xc3/0x1e0 fs/super.c:923 ksys_sync+0x5c/0xa0 fs/sync.c:104 __ia32_sys_sync+0x9/0x20 fs/sync.c:113 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x8f/0x250 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f7e5eecebe9 RSP: 002b:00007f7e5ed3f038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2 RAX: ffffffffffffffda RBX: 00007f7e5f105fa0 RCX: 00007f7e5eecebe9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007f7e5f105fa0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f7e5f106038 R14: 00007f7e5f105fa0 R15: 00007ffc326448b8 INFO: task syz.1.202:5784 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.1.202 state:D stack:13392 pid:5784 tgid:5783 ppid:3923 task_flags:0x400140 flags:0x00080002 Call Trace: context_switch kernel/sched/core.c:5325 [inline] __schedule+0x6c5/0x1610 kernel/sched/core.c:6929 __schedule_loop kernel/sched/core.c:7011 [inline] schedule+0xac/0x140 kernel/sched/core.c:7026 io_schedule+0x3f/0x60 kernel/sched/core.c:7871 bit_wait_io+0xc/0x60 kernel/sched/wait_bit.c:250 __wait_on_bit_lock+0xc1/0x1d0 kernel/sched/wait_bit.c:93 out_of_line_wait_on_bit_lock+0x8f/0xb0 kernel/sched/wait_bit.c:120 wait_on_bit_lock_io include/linux/wait_bit.h:221 [inline] __lock_buffer fs/buffer.c:71 [inline] lock_buffer include/linux/buffer_head.h:432 [inline] __block_write_full_folio+0x1fa/0x440 fs/buffer.c:1910 blkdev_writepages+0xad/0x100 block/fops.c:491 do_writepages+0xcd/0x1f0 mm/page-writeback.c:2604 filemap_fdatawrite_wbc mm/filemap.c:389 [inline] __filemap_fdatawrite_range mm/filemap.c:422 [inline] __filemap_fdatawrite mm/filemap.c:428 [inline] filemap_fdatawrite+0x82/0xc0 mm/filemap.c:433 sync_bdevs+0xfb/0x150 block/bdev.c:1300 ksys_sync+0x63/0xa0 fs/sync.c:105 __ia32_sys_sync+0x9/0x20 fs/sync.c:113 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x8f/0x250 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7feebfcdebe9 RSP: 002b:00007feebfb47038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2 RAX: ffffffffffffffda RBX: 00007feebff15fa0 RCX: 00007feebfcdebe9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007feebff15fa0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007feebff16038 R14: 00007feebff15fa0 R15: 00007ffffb2fa818 INFO: task syz.5.203:5788 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.5.203 state:D stack:13392 pid:5788 tgid:5787 ppid:3921 task_flags:0x400040 flags:0x00080002 Call Trace: context_switch kernel/sched/core.c:5325 [inline] __schedule+0x6c5/0x1610 kernel/sched/core.c:6929 __schedule_loop kernel/sched/core.c:7011 [inline] rt_mutex_schedule+0x1c/0x80 kernel/sched/core.c:7307 rt_mutex_slowlock_block kernel/locking/rtmutex.c:1647 [inline] __rt_mutex_slowlock kernel/locking/rtmutex.c:1721 [inline] __rt_mutex_slowlock_locked+0xb47/0xd30 kernel/locking/rtmutex.c:1760 __rwbase_read_lock+0x65/0x1b0 kernel/locking/rwbase_rt.c:114 __super_lock fs/super.c:59 [inline] super_lock+0x12f/0x170 fs/super.c:121 __iterate_supers+0xae/0x1e0 fs/super.c:922 ksys_sync+0x3c/0xa0 fs/sync.c:102 __ia32_sys_sync+0x9/0x20 fs/sync.c:113 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x8f/0x250 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f8224b9ebe9 RSP: 002b:00007f8224a07038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2 RAX: ffffffffffffffda RBX: 00007f8224dd5fa0 RCX: 00007f8224b9ebe9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007f8224dd5fa0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f8224dd6038 R14: 00007f8224dd5fa0 R15: 00007ffc99226548 INFO: task syz.2.204:5790 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.2.204 state:D stack:12744 pid:5790 tgid:5789 ppid:3492 task_flags:0x400040 flags:0x00080002 Call Trace: context_switch kernel/sched/core.c:5325 [inline] __schedule+0x6c5/0x1610 kernel/sched/core.c:6929 __schedule_loop kernel/sched/core.c:7011 [inline] rt_mutex_schedule+0x1c/0x80 kernel/sched/core.c:7307 rt_mutex_slowlock_block kernel/locking/rtmutex.c:1647 [inline] __rt_mutex_slowlock kernel/locking/rtmutex.c:1721 [inline] __rt_mutex_slowlock_locked+0xb47/0xd30 kernel/locking/rtmutex.c:1760 __rwbase_read_lock+0x65/0x1b0 kernel/locking/rwbase_rt.c:114 __super_lock fs/super.c:59 [inline] super_lock+0x12f/0x170 fs/super.c:121 __iterate_supers+0xae/0x1e0 fs/super.c:922 ksys_sync+0x3c/0xa0 fs/sync.c:102 __ia32_sys_sync+0x9/0x20 fs/sync.c:113 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x8f/0x250 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f499fe3ebe9 RSP: 002b:00007f499fcaf038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2 RAX: ffffffffffffffda RBX: 00007f49a0075fa0 RCX: 00007f499fe3ebe9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007f49a0075fa0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f49a0076038 R14: 00007f49a0075fa0 R15: 00007ffdb0aed4a8 Showing all locks held in the system: 1 lock held by khungtaskd/39: #0: ffffffff84249b40 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline] #0: ffffffff84249b40 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:867 [inline] #0: ffffffff84249b40 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x2e/0x100 kernel/locking/lockdep.c:6775 3 locks held by kworker/u8:4/154: #0: ffff888140ec1138 ((wq_completion)writeback){....}-{0:0}, at: process_one_work kernel/workqueue.c:3238 [inline] #0: ffff888140ec1138 ((wq_completion)writeback){....}-{0:0}, at: process_scheduled_works+0x27f/0x5e0 kernel/workqueue.c:3346 #1: ffffc90002adfe48 ((work_completion)(&(&wb->dwork)->work)){....}-{0:0}, at: process_one_work kernel/workqueue.c:3239 [inline] #1: ffffc90002adfe48 ((work_completion)(&(&wb->dwork)->work)){....}-{0:0}, at: process_scheduled_works+0x29f/0x5e0 kernel/workqueue.c:3346 #2: ffff888100aa40d0 (&type->s_umount_key#47){....}-{3:3}, at: super_trylock_shared+0x16/0x50 fs/super.c:562 2 locks held by kworker/1:3/1105: #0: ffff88810006ad38 ((wq_completion)events_long){....}-{0:0}, at: process_one_work kernel/workqueue.c:3238 [inline] #0: ffff88810006ad38 ((wq_completion)events_long){....}-{0:0}, at: process_scheduled_works+0x27f/0x5e0 kernel/workqueue.c:3346 #1: ffffc900035cfe48 ((work_completion)(&(&sbi->mdb_work)->work)){....}-{0:0}, at: process_one_work kernel/workqueue.c:3239 [inline] #1: ffffc900035cfe48 ((work_completion)(&(&sbi->mdb_work)->work)){....}-{0:0}, at: process_scheduled_works+0x29f/0x5e0 kernel/workqueue.c:3346 2 locks held by getty/2545: #0: ffff888140bb48a0 (&tty->ldisc_sem){....}-{0:0}, at: tty_ldisc_ref_wait+0x20/0x40 drivers/tty/tty_ldisc.c:243 #1: ffffc900001fe2e0 (&ldata->atomic_read_lock){....}-{3:3}, at: n_tty_read+0x1c9/0x6f0 drivers/tty/n_tty.c:2222 1 lock held by syz-executor/3920: #0: ffff888109b5b0d0 (&type->s_umount_key#66){....}-{3:3}, at: __super_lock fs/super.c:57 [inline] #0: ffff888109b5b0d0 (&type->s_umount_key#66){....}-{3:3}, at: __super_lock_excl fs/super.c:72 [inline] #0: ffff888109b5b0d0 (&type->s_umount_key#66){....}-{3:3}, at: deactivate_super+0x33/0x40 fs/super.c:505 1 lock held by udevd/5706: #0: ffff88810078acc8 (&disk->open_mutex){....}-{3:3}, at: bdev_release+0x76/0x180 block/bdev.c:1128 1 lock held by syz.6.200/5780: #0: ffff888109b5b0d0 (&type->s_umount_key#66){....}-{3:3}, at: __super_lock fs/super.c:59 [inline] #0: ffff888109b5b0d0 (&type->s_umount_key#66){....}-{3:3}, at: super_lock+0x12f/0x170 fs/super.c:121 1 lock held by syz.1.202/5784: #0: ffff88810078acc8 (&disk->open_mutex){....}-{3:3}, at: sync_bdevs+0xd7/0x150 block/bdev.c:1288 1 lock held by syz.5.203/5788: #0: ffff888109b5b0d0 (&type->s_umount_key#66){....}-{3:3}, at: __super_lock fs/super.c:59 [inline] #0: ffff888109b5b0d0 (&type->s_umount_key#66){....}-{3:3}, at: super_lock+0x12f/0x170 fs/super.c:121 1 lock held by syz.2.204/5790: #0: ffff888109b5b0d0 (&type->s_umount_key#66){....}-{3:3}, at: __super_lock fs/super.c:59 [inline] #0: ffff888109b5b0d0 (&type->s_umount_key#66){....}-{3:3}, at: super_lock+0x12f/0x170 fs/super.c:121 1 lock held by syz.9.207/7594: #0: ffff888109b5b0d0 (&type->s_umount_key#66){....}-{3:3}, at: __super_lock fs/super.c:59 [inline] #0: ffff888109b5b0d0 (&type->s_umount_key#66){....}-{3:3}, at: super_lock+0x12f/0x170 fs/super.c:121 1 lock held by syz.0.208/7658: #0: ffff888109b5b0d0 (&type->s_umount_key#66){....}-{3:3}, at: __super_lock fs/super.c:59 [inline] #0: ffff888109b5b0d0 (&type->s_umount_key#66){....}-{3:3}, at: super_lock+0x12f/0x170 fs/super.c:121 1 lock held by syz.8.206/7661: #0: ffff888109b5b0d0 (&type->s_umount_key#66){....}-{3:3}, at: __super_lock fs/super.c:59 [inline] #0: ffff888109b5b0d0 (&type->s_umount_key#66){....}-{3:3}, at: super_lock+0x12f/0x170 fs/super.c:121 1 lock held by syz.4.209/7664: #0: ffff888109b5b0d0 (&type->s_umount_key#66){....}-{3:3}, at: __super_lock fs/super.c:59 [inline] #0: ffff888109b5b0d0 (&type->s_umount_key#66){....}-{3:3}, at: super_lock+0x12f/0x170 fs/super.c:121 1 lock held by syz.3.210/7671: #0: ffff888109b5b0d0 (&type->s_umount_key#66){....}-{3:3}, at: __super_lock fs/super.c:59 [inline] #0: ffff888109b5b0d0 (&type->s_umount_key#66){....}-{3:3}, at: super_lock+0x12f/0x170 fs/super.c:121 1 lock held by syz-executor/7682: #0: ffff88810078acc8 (&disk->open_mutex){....}-{3:3}, at: bdev_open+0x73/0x390 block/bdev.c:945 1 lock held by syz.2.213/9535: #0: ffff888109b5b0d0 (&type->s_umount_key#66){....}-{3:3}, at: __super_lock fs/super.c:59 [inline] #0: ffff888109b5b0d0 (&type->s_umount_key#66){....}-{3:3}, at: super_lock+0x12f/0x170 fs/super.c:121 1 lock held by syz.1.212/9534: #0: ffff888109b5b0d0 (&type->s_umount_key#66){....}-{3:3}, at: __super_lock fs/super.c:59 [inline] #0: ffff888109b5b0d0 (&type->s_umount_key#66){....}-{3:3}, at: super_lock+0x12f/0x170 fs/super.c:121 1 lock held by syz.5.211/9538: #0: ffff888109b5b0d0 (&type->s_umount_key#66){....}-{3:3}, at: __super_lock fs/super.c:59 [inline] #0: ffff888109b5b0d0 (&type->s_umount_key#66){....}-{3:3}, at: super_lock+0x12f/0x170 fs/super.c:121 1 lock held by syz.6.215/9543: #0: ffff888109b5b0d0 (&type->s_umount_key#66){....}-{3:3}, at: __super_lock fs/super.c:59 [inline] #0: ffff888109b5b0d0 (&type->s_umount_key#66){....}-{3:3}, at: super_lock+0x12f/0x170 fs/super.c:121 1 lock held by syz.9.217/11380: #0: ffff888109b5b0d0 (&type->s_umount_key#66){....}-{3:3}, at: __super_lock fs/super.c:59 [inline] #0: ffff888109b5b0d0 (&type->s_umount_key#66){....}-{3:3}, at: super_lock+0x12f/0x170 fs/super.c:121 1 lock held by syz.3.220/11390: #0: ffff888109b5b0d0 (&type->s_umount_key#66){....}-{3:3}, at: __super_lock fs/super.c:59 [inline] #0: ffff888109b5b0d0 (&type->s_umount_key#66){....}-{3:3}, at: super_lock+0x12f/0x170 fs/super.c:121 1 lock held by syz.0.218/11398: #0: ffff888109b5b0d0 (&type->s_umount_key#66){....}-{3:3}, at: __super_lock fs/super.c:59 [inline] #0: ffff888109b5b0d0 (&type->s_umount_key#66){....}-{3:3}, at: super_lock+0x12f/0x170 fs/super.c:121 1 lock held by syz.4.219/11414: #0: ffff888109b5b0d0 (&type->s_umount_key#66){....}-{3:3}, at: __super_lock fs/super.c:59 [inline] #0: ffff888109b5b0d0 (&type->s_umount_key#66){....}-{3:3}, at: super_lock+0x12f/0x170 fs/super.c:121 1 lock held by syz.8.216/11428: #0: ffff888109b5b0d0 (&type->s_umount_key#66){....}-{3:3}, at: __super_lock fs/super.c:59 [inline] #0: ffff888109b5b0d0 (&type->s_umount_key#66){....}-{3:3}, at: super_lock+0x12f/0x170 fs/super.c:121 1 lock held by syz-executor/11443: #0: ffff88810078acc8 (&disk->open_mutex){....}-{3:3}, at: bdev_open+0x73/0x390 block/bdev.c:945 1 lock held by syz.2.223/13264: #0: ffff888109b5b0d0 (&type->s_umount_key#66){....}-{3:3}, at: __super_lock fs/super.c:59 [inline] #0: ffff888109b5b0d0 (&type->s_umount_key#66){....}-{3:3}, at: super_lock+0x12f/0x170 fs/super.c:121 1 lock held by syz.5.221/13296: #0: ffff888109b5b0d0 (&type->s_umount_key#66){....}-{3:3}, at: __super_lock fs/super.c:59 [inline] #0: ffff888109b5b0d0 (&type->s_umount_key#66){....}-{3:3}, at: super_lock+0x12f/0x170 fs/super.c:121 1 lock held by syz.6.225/13299: #0: ffff888109b5b0d0 (&type->s_umount_key#66){....}-{3:3}, at: __super_lock fs/super.c:59 [inline] #0: ffff888109b5b0d0 (&type->s_umount_key#66){....}-{3:3}, at: super_lock+0x12f/0x170 fs/super.c:121 1 lock held by syz.1.222/13304: #0: ffff888109b5b0d0 (&type->s_umount_key#66){....}-{3:3}, at: __super_lock fs/super.c:59 [inline] #0: ffff888109b5b0d0 (&type->s_umount_key#66){....}-{3:3}, at: super_lock+0x12f/0x170 fs/super.c:121 1 lock held by syz.0.228/15161: #0: ffff888109b5b0d0 (&type->s_umount_key#66){....}-{3:3}, at: __super_lock fs/super.c:59 [inline] #0: ffff888109b5b0d0 (&type->s_umount_key#66){....}-{3:3}, at: super_lock+0x12f/0x170 fs/super.c:121 1 lock held by syz.8.226/15166: #0: ffff888109b5b0d0 (&type->s_umount_key#66){....}-{3:3}, at: __super_lock fs/super.c:59 [inline] #0: ffff888109b5b0d0 (&type->s_umount_key#66){....}-{3:3}, at: super_lock+0x12f/0x170 fs/super.c:121 1 lock held by syz.9.227/15172: #0: ffff888109b5b0d0 (&type->s_umount_key#66){....}-{3:3}, at: __super_lock fs/super.c:59 [inline] #0: ffff888109b5b0d0 (&type->s_umount_key#66){....}-{3:3}, at: super_lock+0x12f/0x170 fs/super.c:121 1 lock held by syz.3.230/15183: #0: ffff888109b5b0d0 (&type->s_umount_key#66){....}-{3:3}, at: __super_lock fs/super.c:59 [inline] #0: ffff888109b5b0d0 (&type->s_umount_key#66){....}-{3:3}, at: super_lock+0x12f/0x170 fs/super.c:121 1 lock held by syz.4.229/15184: #0: ffff888109b5b0d0 (&type->s_umount_key#66){....}-{3:3}, at: __super_lock fs/super.c:59 [inline] #0: ffff888109b5b0d0 (&type->s_umount_key#66){....}-{3:3}, at: super_lock+0x12f/0x170 fs/super.c:121 1 lock held by syz-executor/15194: #0: ffff88810078acc8 (&disk->open_mutex){....}-{3:3}, at: bdev_open+0x73/0x390 block/bdev.c:945 1 lock held by syz.6.235/17006: #0: ffff888109b5b0d0 (&type->s_umount_key#66){....}-{3:3}, at: __super_lock fs/super.c:59 [inline] #0: ffff888109b5b0d0 (&type->s_umount_key#66){....}-{3:3}, at: super_lock+0x12f/0x170 fs/super.c:121 1 lock held by syz.1.232/17024: #0: ffff888109b5b0d0 (&type->s_umount_key#66){....}-{3:3}, at: __super_lock fs/super.c:59 [inline] #0: ffff888109b5b0d0 (&type->s_umount_key#66){....}-{3:3}, at: super_lock+0x12f/0x170 fs/super.c:121 1 lock held by syz.2.233/17057: #0: ffff888109b5b0d0 (&type->s_umount_key#66){....}-{3:3}, at: __super_lock fs/super.c:59 [inline] #0: ffff888109b5b0d0 (&type->s_umount_key#66){....}-{3:3}, at: super_lock+0x12f/0x170 fs/super.c:121 1 lock held by syz.5.231/17061: #0: ffff888109b5b0d0 (&type->s_umount_key#66){....}-{3:3}, at: __super_lock fs/super.c:59 [inline] #0: ffff888109b5b0d0 (&type->s_umount_key#66){....}-{3:3}, at: super_lock+0x12f/0x170 fs/super.c:121 1 lock held by syz.8.236/18880: #0: ffff888109b5b0d0 (&type->s_umount_key#66){....}-{3:3}, at: __super_lock fs/super.c:59 [inline] #0: ffff888109b5b0d0 (&type->s_umount_key#66){....}-{3:3}, at: super_lock+0x12f/0x170 fs/super.c:121 1 lock held by syz.4.239/18912: #0: ffff888109b5b0d0 (&type->s_umount_key#66){....}-{3:3}, at: __super_lock fs/super.c:59 [inline] #0: ffff888109b5b0d0 (&type->s_umount_key#66){....}-{3:3}, at: super_lock+0x12f/0x170 fs/super.c:121 1 lock held by syz.3.240/18919: #0: ffff888109b5b0d0 (&type->s_umount_key#66){....}-{3:3}, at: __super_lock fs/super.c:59 [inline] #0: ffff888109b5b0d0 (&type->s_umount_key#66){....}-{3:3}, at: super_lock+0x12f/0x170 fs/super.c:121 1 lock held by syz.0.238/18935: #0: ffff888109b5b0d0 (&type->s_umount_key#66){....}-{3:3}, at: __super_lock fs/super.c:59 [inline] #0: ffff888109b5b0d0 (&type->s_umount_key#66){....}-{3:3}, at: super_lock+0x12f/0x170 fs/super.c:121 1 lock held by syz.9.237/18942: #0: ffff888109b5b0d0 (&type->s_umount_key#66){....}-{3:3}, at: __super_lock fs/super.c:59 [inline] #0: ffff888109b5b0d0 (&type->s_umount_key#66){....}-{3:3}, at: super_lock+0x12f/0x170 fs/super.c:121 ============================================= NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 39 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT_{RT,(full)} Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 Call Trace: dump_stack_lvl+0xa2/0xf0 lib/dump_stack.c:120 nmi_cpu_backtrace+0x109/0x170 lib/nmi_backtrace.c:113 nmi_trigger_cpumask_backtrace+0x8e/0x140 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:332 [inline] watchdog+0x573/0x5a0 kernel/hung_task.c:495 kthread+0x203/0x230 kernel/kthread.c:463 ret_from_fork+0xd2/0x1a0 arch/x86/kernel/process.c:158 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: 0 Comm: swapper/1 Not tainted syzkaller #0 PREEMPT_{RT,(full)} Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 RIP: 0010:pv_native_safe_halt+0x13/0x20 arch/x86/kernel/paravirt.c:82 Code: cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d d9 3d 1d 00 f3 0f 1e fa fb f4 08 56 01 00 cc cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 RSP: 0018:ffffc9000011bee0 EFLAGS: 000002c6 RAX: e3eed0a5d5eb6700 RBX: 0000000000000001 RCX: e3eed0a5d5eb6700 RDX: 00000000ffffe800 RSI: ffffffff83c5baa0 RDI: ffffffff83e454d8 RBP: ffffc9000011bef8 R08: 0000000000080000 R09: 00000000000000b6 R10: 0000000000000000 R11: ffffffff81272d70 R12: 0000000000000000 R13: ffff8881016c8000 R14: 0000000000000000 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8881b67b2000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2f724224 CR3: 0000000127bec000 CR4: 00000000003506f0 Call Trace: arch_safe_halt arch/x86/include/asm/paravirt.h:107 [inline] default_idle+0x13/0x20 arch/x86/kernel/process.c:767 default_idle_call+0x3c/0x60 kernel/sched/idle.c:122 cpuidle_idle_call kernel/sched/idle.c:190 [inline] do_idle+0xd7/0x240 kernel/sched/idle.c:330 cpu_startup_entry+0x25/0x30 kernel/sched/idle.c:428 start_secondary+0x95/0xa0 arch/x86/kernel/smpboot.c:315 common_startup_64+0x13e/0x147