ci starts bisection 2025-12-09 16:53:30.048816131 +0000 UTC m=+1140799.574302234 bisecting fixing commit since 155a3c003e555a7300d156a5252c004c392ec6b0 building syzkaller on 03fcfc4b7385b545a89a3fc62bef4e1ec7532e0d ensuring issue is reproducible on original commit 155a3c003e555a7300d156a5252c004c392ec6b0 testing commit 155a3c003e555a7300d156a5252c004c392ec6b0 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 51db85a8c8db7f8cb5091710d273d8efadc836d17217485b0de9d2365a190deb run #0: crashed: lost connection to test machine run #1: crashed: INFO: rcu detected stall in corrupted run #2: crashed: INFO: rcu detected stall in corrupted run #3: crashed: INFO: rcu detected stall in corrupted run #4: crashed: INFO: rcu detected stall in worker_thread run #5: crashed: INFO: rcu detected stall in corrupted run #6: crashed: INFO: rcu detected stall in security_file_open run #7: crashed: INFO: rcu detected stall in worker_thread run #8: crashed: INFO: rcu detected stall in worker_thread run #9: crashed: INFO: rcu detected stall in smp_call_function run #10: crashed: INFO: rcu detected stall in worker_thread run #11: crashed: INFO: rcu detected stall in corrupted run #12: crashed: INFO: rcu detected stall in x64_sys_call run #13: crashed: INFO: rcu detected stall in sock_close run #14: crashed: INFO: rcu detected stall in corrupted run #15: crashed: lost connection to test machine run #16: basic kernel testing failed: failed to copy binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "IdentitiesOnly=yes" "-o" "BatchMode=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor271629556" "root@10.128.10.11:./syz-executor271629556"]: exit status 255 run #17: basic kernel testing failed: failed to copy binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "IdentitiesOnly=yes" "-o" "BatchMode=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor2019968588" "root@10.128.10.21:./syz-executor2019968588"]: exit status 255 run #18: basic kernel testing failed: failed to copy binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "IdentitiesOnly=yes" "-o" "BatchMode=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor1820348903" "root@10.128.0.60:./syz-executor1820348903"]: exit status 255 run #19: basic kernel testing failed: failed to copy binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "IdentitiesOnly=yes" "-o" "BatchMode=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor3376651200" "root@10.128.0.147:./syz-executor3376651200"]: exit status 255 representative crash: INFO: rcu detected stall in corrupted, types: [HANG] check whether we can drop unnecessary instrumentation disabling configs for [memleak ubsan bug_or_warning kasan locking atomic_sleep], they are not needed testing commit 155a3c003e555a7300d156a5252c004c392ec6b0 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 208fc17696321682143f1996c1143205552d91f430acdf6d22a8106ad2c6809c run #0: ignore: lost connection to test machine run #1: ignore: lost connection to test machine run #2: ignore: lost connection to test machine run #3: ignore: lost connection to test machine run #4: ignore: lost connection to test machine run #5: ignore: lost connection to test machine run #6: ignore: lost connection to test machine run #7: ignore: lost connection to test machine run #8: ignore: lost connection to test machine run #9: crashed: INFO: rcu detected stall in worker_thread representative crash: INFO: rcu detected stall in worker_thread, types: [HANG] unable to determine the verdict: 0 good runs (wanted 5), for bad wanted 5 in total, got 1 kconfig minimization: base=4116 full=8481 leaves diff=2206 split chunks (needed=false): <2206> split chunk #0 of len 2206 into 5 parts testing without sub-chunk 1/5 testing commit 155a3c003e555a7300d156a5252c004c392ec6b0 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: d56bbee05cb93b3a5b15f5c419e5c914806e3db9251860038d5549837cfe764d run #0: crashed: INFO: rcu detected stall in worker_thread run #1: crashed: INFO: rcu detected stall in sys_execve run #2: crashed: INFO: rcu detected stall in worker_thread run #3: crashed: INFO: rcu detected stall in worker_thread run #4: crashed: INFO: rcu detected stall in corrupted run #5: ignore: lost connection to test machine run #6: crashed: INFO: rcu detected stall in worker_thread run #7: crashed: INFO: rcu detected stall in worker_thread run #8: crashed: INFO: rcu detected stall in corrupted run #9: crashed: INFO: rcu detected stall in corrupted representative crash: INFO: rcu detected stall in worker_thread, types: [HANG] the chunk can be dropped testing without sub-chunk 2/5 testing commit 155a3c003e555a7300d156a5252c004c392ec6b0 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: bf4f1b54060da9b5faaefdd85edf6a5b1f01fbebbc9f76d8908fe9a952b36a30 all runs: OK false negative chance: 0.000 testing without sub-chunk 3/5 testing commit 155a3c003e555a7300d156a5252c004c392ec6b0 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: ac2de995269ed99f47cc562cb03fd256a8bf93c97356a76bbc1065eec344edb9 run #0: ignore: lost connection to test machine run #1: ignore: lost connection to test machine run #2: crashed: INFO: rcu detected stall in worker_thread run #3: crashed: INFO: rcu detected stall in corrupted run #4: crashed: INFO: rcu detected stall in corrupted run #5: crashed: INFO: rcu detected stall in security_file_open run #6: crashed: INFO: rcu detected stall in corrupted run #7: crashed: INFO: rcu detected stall in sys_sendto run #8: crashed: INFO: rcu detected stall in sys_newfstatat run #9: crashed: INFO: rcu detected stall in worker_thread representative crash: INFO: rcu detected stall in worker_thread, types: [HANG] the chunk can be dropped testing without sub-chunk 4/5 testing commit 155a3c003e555a7300d156a5252c004c392ec6b0 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 0a50ed509d86c0b369ae40d96d8417ebc0bdb3e7452e952fbf3bf692d742a36d run #0: crashed: INFO: rcu detected stall in worker_thread run #1: ignore: lost connection to test machine run #2: ignore: lost connection to test machine run #3: ignore: lost connection to test machine run #4: ignore: lost connection to test machine run #5: crashed: INFO: rcu detected stall in corrupted run #6: ignore: lost connection to test machine run #7: crashed: INFO: rcu detected stall in corrupted run #8: ignore: lost connection to test machine run #9: ignore: lost connection to test machine representative crash: INFO: rcu detected stall in worker_thread, types: [HANG] unable to determine the verdict: 0 good runs (wanted 5), for bad wanted 5 in total, got 3 testing without sub-chunk 5/5 testing commit 155a3c003e555a7300d156a5252c004c392ec6b0 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 74cf553b7dbcfb034639913a2feb7eb1e8282a7067b305e000e23135ef756c32 all runs: OK false negative chance: 0.000 minimized to 1322 configs; suspects: [6LOWPAN AF_RXRPC ARCH_ENABLE_MEMORY_HOTREMOVE ARCH_HAS_PTE_DEVMAP ASUS_WMI ATM AX25 BCMA BLK_DEV_ZONED BPF_SYSCALL BT BT_BREDR BT_HIDP BXT_WC_PMIC_OPREGION CARDBUS CFG80211 CFG80211_WEXT CHARGER_BQ24190 CMA COMMON_CLK CONTIG_ALLOC CRYPTO_WP512 CRYPTO_XCBC CRYPTO_XCTR CRYPTO_XTS CRYPTO_XXHASH CRYPTO_ZSTD CUSE CYPRESS_FIRMWARE DAMON DAMON_PADDR DAMON_RECLAIM DAMON_VADDR DAX DCA DCB DEBUG_VFS DEFAULT_CODEL DEVICE_MIGRATION DEVICE_PRIVATE DEV_COREDUMP DEV_DAX DLM DLN2_ADC DMABUF_HEAPS DMABUF_HEAPS_CMA 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_BUDDY 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_DSC_HELPER DRM_DISPLAY_HDCP_HELPER DRM_DISPLAY_HDMI_HELPER DRM_DISPLAY_HELPER 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_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 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_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 GTP GUEST_PERF_EVENTS HAMRADIO HAS_LTO_CLANG HAVE_ARCH_NODE_DEV_GROUP HAVE_ARCH_STACKLEAK HAVE_ARCH_USERFAULTFD_MINOR HAVE_ARCH_USERFAULTFD_WP HAVE_BOOTMEM_INFO_NODE HAVE_CFI_ICALL_NORMALIZE_INTEGERS_CLANG HAVE_CLK HAVE_CLK_PREPARE HAVE_FTRACE_MCOUNT_RECORD 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_ZEROPLUS 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_FILTER IP6_NF_IPTABLES_LEGACY IP6_NF_MANGLE 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_REJECT IP6_NF_TARGET_SYNPROXY IPV6_FOU IPV6_FOU_TUNNEL IPV6_GRE IPV6_ILA IPV6_MIP6 IPV6_MROUTE IPV6_MROUTE_MULTIPLE_TABLES IP_SCTP IRQ_REMAP IRQ_TIME_ACCOUNTING KVM KVM_INTEL L2TP LAPB LCD_CLASS_DEVICE LEDS_CLASS_MULTICOLOR LIBNVDIMM MAC80211 MAC802154 MEDIA_ANALOG_TV_SUPPORT MEDIA_CAMERA_SUPPORT MEDIA_CEC_SUPPORT MEDIA_COMMON_OPTIONS MEDIA_CONTROLLER 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 NETFILTER_NETLINK_GLUE_CT NETFILTER_NETLINK_QUEUE NET_ACT_GACT NET_ACT_MIRRED NET_IPGRE NET_IPGRE_DEMUX NET_SCH_DEFAULT NFS_V4_1 NFT_COMPAT NFT_FWD_NETDEV NF_CONNTRACK_H323 NF_CONNTRACK_LABELS 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_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 NOP_USB_XCEIV NOZOMI NTFS3_FS NTFS3_FS_POSIX_ACL NTFS3_LZX_XPRESS NULL_TTY NUMA_BALANCING NUMA_BALANCING_DEFAULT_ENABLED 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 PHONET 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 PROC_CHILDREN PSAMPLE PSI PSTORE PSTORE_COMPRESS QCOM_QMI_HELPERS QNX4FS_FS QNX6FS_FS QRTR QRTR_TUN RADIO_ADAPTERS RADIO_SHARK RADIO_SHARK2 RADIO_SI470X 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 READ_ONLY_THP_FOR_FS REALTEK_AUTOPM REED_SOLOMON REED_SOLOMON_DEC8 REGMAP REGMAP_I2C REGMAP_IRQ REGMAP_MMIO 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USB_DWC3 USB_DWC3_GADGET USB_DWC3_HAPS USB_DWC3_OF_SIMPLE USB_DWC3_PCI USB_DWC3_ULPI USB_DYNAMIC_MINORS USB_EG20T USB_EHCI_FSL USB_EHCI_HCD_PLATFORM USB_EHCI_ROOT_HUB_TT USB_EHSET_TEST_FIXTURE USB_EMI26 USB_EMI62 USB_EPSON2888 USB_EZUSB_FX2 USB_FEW_INIT_RETRIES USB_F_ACM USB_F_ECM USB_F_EEM USB_F_FS USB_F_HID USB_F_MASS_STORAGE USB_F_MIDI USB_F_MIDI2 USB_F_NCM USB_F_OBEX USB_F_PHONET USB_F_PRINTER USB_F_RNDIS USB_F_SERIAL USB_F_SS_LB USB_F_SUBSET USB_F_TCM USB_F_UAC1 USB_F_UAC1_LEGACY USB_F_UAC2 USB_F_UVC USB_GADGET USB_GADGETFS USB_GADGET_DEBUG_FILES USB_GADGET_DEBUG_FS USB_GL860 USB_GOKU USB_GR_UDC USB_GSPCA USB_GSPCA_BENQ USB_GSPCA_CONEX USB_GSPCA_CPIA1 USB_GSPCA_DTCS033 USB_GSPCA_ETOMS USB_GSPCA_FINEPIX USB_GSPCA_JEILINJ USB_GSPCA_JL2005BCD USB_GSPCA_KINECT USB_GSPCA_KONICA USB_GSPCA_MARS USB_GSPCA_MR97310A USB_GSPCA_NW80X USB_GSPCA_OV519 USB_GSPCA_OV534 USB_GSPCA_OV534_9 USB_GSPCA_PAC207 USB_GSPCA_PAC7302 USB_GSPCA_PAC7311 USB_GSPCA_SE401 USB_GSPCA_SN9C2028 USB_GSPCA_SN9C20X USB_GSPCA_SONIXB USB_GSPCA_SONIXJ USB_GSPCA_SPCA1528 USB_GSPCA_SPCA500 USB_GSPCA_SPCA501 USB_GSPCA_SPCA505 USB_GSPCA_SPCA506 USB_GSPCA_SPCA508 USB_GSPCA_SPCA561 USB_GSPCA_SQ905 USB_GSPCA_SQ905C USB_GSPCA_SQ930X USB_GSPCA_STK014 USB_GSPCA_STK1135 USB_GSPCA_STV0680 USB_GSPCA_SUNPLUS USB_GSPCA_T613 USB_GSPCA_TOPRO USB_GSPCA_TOUPTEK USB_GSPCA_TV8532 USB_GSPCA_VC032X USB_GSPCA_VICAM USB_GSPCA_XIRLINK_CIT USB_GSPCA_ZC3XX USB_HACKRF USB_HCD_BCMA USB_HCD_SSB USB_HSIC_USB3503 USB_HSIC_USB4604 USB_HSO USB_HUB_USB251XB USB_IDMOUSE USB_IOWARRIOR USB_IPHETH USB_ISIGHTFW USB_ISP116X_HCD USB_ISP1301 USB_ISP1760 USB_ISP1760_DUAL_ROLE USB_ISP1760_HCD USB_ISP1761_UDC USB_KAWETH USB_KC2190 USB_KEENE USB_LAN78XX USB_LCD USB_LD USB_LEDS_TRIGGER_USBPORT USB_LED_TRIG USB_LEGOTOWER USB_LGM_PHY USB_LIBCOMPOSITE USB_LINK_LAYER_TEST USB_LJCA USB_M5602 USB_MA901 USB_MAX3420_UDC USB_MAX3421_HCD USB_MDC800 USB_MICROTEK USB_MR800 USB_MSI2500 USB_MUSB_DUAL_ROLE USB_MUSB_HDRC USB_NET2280 USB_NET_AQC111 USB_NET_AX88179_178A USB_NET_AX8817X USB_NET_CDCETHER USB_NET_CDC_EEM USB_NET_CDC_MBIM USB_NET_CDC_NCM USB_NET_CDC_SUBSET USB_NET_CDC_SUBSET_ENABLE USB_NET_CH9200 USB_NET_CX82310_ETH USB_NET_DM9601 USB_NET_GL620A USB_NET_HUAWEI_CDC_NCM USB_NET_INT51X1 USB_NET_KALMIA USB_NET_MCS7830 USB_NET_NET1080 USB_NET_PLUSB USB_NET_QMI_WWAN USB_NET_RNDIS_HOST USB_NET_SMSC75XX USB_NET_SMSC95XX USB_NET_SR9700 USB_NET_SR9800 USB_NET_ZAURUS USB_OHCI_HCD_PLATFORM USB_OTG USB_OTG_FSM USB_OXU210HP_HCD USB_PEGASUS USB_PULSE8_CEC USB_PWC USB_PWC_INPUT_EVDEV USB_PXA27X USB_R8A66597 USB_R8A66597_HCD USB_RAINSHADOW_CEC USB_RAREMONO USB_RAW_GADGET USB_ROLES_INTEL_XHCI USB_ROLE_SWITCH USB_RTL8150 USB_RTL8152 USB_RTL8153_ECM USB_S2255 USB_SERIAL USB_SERIAL_AIRCABLE USB_SERIAL_ARK3116 USB_SERIAL_BELKIN USB_SERIAL_CH341 USB_SERIAL_CONSOLE USB_SERIAL_CP210X USB_SERIAL_CYBERJACK USB_SERIAL_CYPRESS_M8 USB_SERIAL_DEBUG USB_SERIAL_DIGI_ACCELEPORT USB_SERIAL_EDGEPORT USB_SERIAL_EDGEPORT_TI USB_SERIAL_EMPEG USB_SERIAL_F81232 USB_SERIAL_F8153X USB_SERIAL_FTDI_SIO USB_SERIAL_GARMIN USB_SERIAL_GENERIC USB_SERIAL_IPAQ USB_SERIAL_IPW USB_SERIAL_IR USB_SERIAL_IUU USB_SERIAL_KEYSPAN USB_SERIAL_KEYSPAN_PDA USB_SERIAL_KLSI USB_SERIAL_KOBIL_SCT USB_SERIAL_MCT_U232 USB_SERIAL_METRO USB_SERIAL_MOS7715_PARPORT USB_SERIAL_MOS7720 USB_SERIAL_MOS7840 USB_SERIAL_MXUPORT USB_SERIAL_NAVMAN USB_SERIAL_OMNINET USB_SERIAL_OPTICON USB_SERIAL_OPTION USB_SERIAL_OTI6858 USB_SERIAL_PL2303 USB_SERIAL_QCAUX USB_SERIAL_QT2 USB_SERIAL_QUALCOMM USB_SERIAL_SAFE USB_SERIAL_SIERRAWIRELESS USB_SERIAL_SIMPLE USB_SERIAL_SPCP8X5 USB_SERIAL_SSU100 USB_SERIAL_SYMBOL USB_SERIAL_TI USB_SERIAL_UPD78F0730 USB_SERIAL_VISOR USB_SERIAL_WHITEHEAT USB_SERIAL_WISHBONE USB_SERIAL_WWAN USB_SERIAL_XR USB_SERIAL_XSENS_MT USB_SEVSEG USB_SI470X USB_SI4713 USB_SIERRA_NET USB_SISUSBVGA USB_SL811_CS USB_SL811_HCD USB_SL811_HCD_ISO USB_SNP_CORE USB_SPEEDTOUCH USB_STORAGE_ALAUDA USB_STORAGE_CYPRESS_ATACB USB_STORAGE_DATAFAB USB_STORAGE_ENE_UB6250 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VIDEO_CS53L32A VIDEO_CX231XX VIDEO_CX231XX_ALSA VIDEO_CX231XX_DVB VIDEO_CX231XX_RC VIDEO_CX2341X VIDEO_CX25840 VIDEO_DEV VIDEO_EM28XX VIDEO_EM28XX_ALSA VIDEO_EM28XX_DVB VIDEO_EM28XX_RC VIDEO_EM28XX_V4L2 VIDEO_GO7007 VIDEO_GO7007_LOADER VIDEO_GO7007_USB VIDEO_GO7007_USB_S2250_BOARD VIDEO_HDPVR VIDEO_MSP3400 VIDEO_PVRUSB2 VIDEO_PVRUSB2_DVB VIDEO_PVRUSB2_SYSFS VIDEO_SAA711X VIDEO_STK1160 VIDEO_TUNER VIDEO_TVEEPROM VIDEO_USBTV VIDEO_V4L2_I2C VIDEO_V4L2_SUBDEV_API VIDEO_V4L2_TPG VIDEO_VICODEC VIDEO_VIM2M VIDEO_VIMC VIDEO_VIVID VIDEO_VIVID_CEC VIDEO_WM8775 VIPERBOARD_ADC VIRTIO_BALLOON VIRTIO_DMA_SHARED_BUFFER VIRTIO_FS VIRTIO_MEM VIRTIO_MMIO VIRTIO_MMIO_CMDLINE_DEVICES VIRTIO_PMEM VIRTIO_VDPA VIRTIO_VSOCKETS VIRTIO_VSOCKETS_COMMON VIRT_WIFI VLAN_8021Q VLAN_8021Q_GVRP VLAN_8021Q_MVRP VMAP_PFN VMWARE_VMCI VMXNET3 VP_VDPA VSOCKETS VSOCKETS_DIAG VSOCKETS_LOOPBACK VSOCKMON VT_HW_CONSOLE_BINDING VXFS_FS VXLAN WAN WANT_DEV_COREDUMP WEXT_CORE WEXT_PROC WIREGUARD WIRELESS WLAN WLAN_VENDOR_ADMTEK WLAN_VENDOR_PURELIFI WLAN_VENDOR_SILABS X86_64_SMP X86_SGX X86_SGX_KVM X86_USER_SHADOW_STACK XDP_SOCKETS XDP_SOCKETS_DIAG XFRM_ESPINTCP XFRM_INTERFACE XFRM_IPCOMP XFRM_MIGRATE XFRM_OFFLOAD XFRM_STATISTICS XFRM_SUB_POLICY XFRM_USER_COMPAT XFS_FS XFS_POSIX_ACL XFS_QUOTA XFS_RT XILLYBUS_CLASS XILLYUSB XOR_BLOCKS YENTA YENTA_ENE_TUNE YENTA_O2 YENTA_RICOH YENTA_TI YENTA_TOSHIBA ZEROPLUS_FF ZLIB_DEFLATE ZONEFS_FS ZONE_DEVICE ZPOOL ZRAM ZRAM_BACKEND_FORCE_LZO ZRAM_BACKEND_LZO ZRAM_DEF_COMP_LZO ZSMALLOC ZSTD_COMPRESS ZSWAP ZSWAP_COMPRESSOR_DEFAULT_842 ZSWAP_DEFAULT_ON ZSWAP_SHRINKER_DEFAULT_ON ZSWAP_ZPOOL_DEFAULT_ZSMALLOC] testing current HEAD cb015814f8b6eebcbb8e46e111d108892c5e6821 testing commit cb015814f8b6eebcbb8e46e111d108892c5e6821 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: cedfdb3f0018fab24ec6a19e43da7f840a3038627169c6c5f811a2a3349e9e29 run #0: ignore: lost connection to test machine run #1: ignore: lost connection to test machine run #2: ignore: lost connection to test machine run #3: crashed: INFO: rcu detected stall in sys_openat run #4: crashed: INFO: rcu detected stall in worker_thread run #5: crashed: INFO: rcu detected stall in corrupted run #6: crashed: INFO: rcu detected stall in corrupted run #7: crashed: INFO: rcu detected stall in corrupted run #8: ignore: lost connection to test machine run #9: crashed: INFO: rcu detected stall in corrupted representative crash: INFO: rcu detected stall in sys_openat, types: [HANG] crash still not fixed/happens on the oldest tested release revisions tested: 8, total time: 2h52m52.301749166s (build: 1h28m32.257864307s, test: 1h13m13.374162023s) crash still not fixed or there were kernel test errors commit msg: Merge tag 'f2fs-for-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs crash: INFO: rcu detected stall in sys_openat rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P4006/1:b..l rcu: (detected by 1, t=10506 jiffies, g=13157, q=777 ncpus=2) task:udevd state:R running task stack:24600 pid:4006 tgid:4006 ppid:1 task_flags:0x400140 flags:0x00080000 Call Trace: context_switch kernel/sched/core.c:5256 [inline] __schedule+0x1497/0x4fc0 kernel/sched/core.c:6863 preempt_schedule_irq+0xb5/0x150 kernel/sched/core.c:7190 irqentry_exit+0x5d8/0x660 kernel/entry/common.c:216 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 RIP: 0010:seqcount_lockdep_reader_access+0x129/0x180 include/linux/seqlock.h:75 Code: a7 9f ff 48 c7 44 24 20 00 00 00 00 9c 8f 44 24 20 f6 44 24 21 02 75 4b 41 f7 c5 00 02 00 00 74 01 fb 48 c7 04 24 0e 36 e0 45 <4b> c7 04 27 00 00 00 00 66 43 c7 44 27 09 00 00 43 c6 44 27 0b 00 RSP: 0018:ffffc90002427760 EFLAGS: 00000206 RAX: b6fdf1399cf4f500 RBX: ffff88802a7e8f10 RCX: b6fdf1399cf4f500 RDX: 0000000000000000 RSI: ffffffff8a36efe5 RDI: ffffffff88caea60 RBP: ffffc90002427818 R08: ffffffff8bec4cb7 R09: 1ffffffff17d8996 R10: dffffc0000000000 R11: fffffbfff17d8997 R12: dffffc0000000000 R13: 0000000000000a02 R14: ffffffff8201db46 R15: 1ffff92000484eec read_seqbegin include/linux/seqlock.h:836 [inline] set_root+0x166/0x340 fs/namei.c:1055 nd_jump_root+0x25a/0x380 fs/namei.c:1076 path_init+0x264/0x1190 fs/namei.c:2653 path_openat+0x16d/0x3200 fs/namei.c:4782 do_filp_open+0x1e4/0x3c0 fs/namei.c:4814 do_sys_openat2+0xfa/0x1a0 fs/open.c:1430 do_sys_open fs/open.c:1436 [inline] __do_sys_openat fs/open.c:1452 [inline] __se_sys_openat fs/open.c:1447 [inline] __x64_sys_openat+0xf3/0x120 fs/open.c:1447 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f921aea7407 RSP: 002b:00007ffc4e52bc80 EFLAGS: 00000202 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f921b6b0880 RCX: 00007f921aea7407 RDX: 0000000000080141 RSI: 000055fa3b4e702e RDI: ffffffffffffff9c RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000000001a4 R11: 0000000000000202 R12: 00000000ffffffff R13: 00000000ffffffff R14: ffffffffffffffff R15: 0000000000000000 rcu: rcu_preempt kthread starved for 10459 jiffies! g13157 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior. rcu: RCU grace-period kthread stack dump: task:rcu_preempt state:R running task stack:27224 pid:16 tgid:16 ppid:2 task_flags:0x208040 flags:0x00080000 Call Trace: context_switch kernel/sched/core.c:5256 [inline] __schedule+0x1497/0x4fc0 kernel/sched/core.c:6863 __schedule_loop kernel/sched/core.c:6945 [inline] schedule+0x165/0x360 kernel/sched/core.c:6960 schedule_timeout+0x10c/0x230 kernel/time/sleep_timeout.c:99 rcu_gp_fqs_loop+0x301/0x1540 kernel/rcu/tree.c:2083 rcu_gp_kthread+0x99/0x390 kernel/rcu/tree.c:2285 kthread+0x600/0x770 kernel/kthread.c:463 ret_from_fork+0x3ed/0x810 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246 rcu: Stack dump where RCU GP kthread last ran: Sending NMI from CPU 1 to CPUs 0: 0.000000 0.000000 0.000000 NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 5890 Comm: kworker/0:5 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 Workqueue: wg-crypt-wg0 wg_packet_encrypt_worker RIP: 0010:io_serial_in+0x60/0xa0 drivers/tty/serial/8250/8250_port.c:400 Code: 83 ff 20 73 49 44 89 f9 d3 e3 49 83 c6 40 4c 89 f0 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 f7 e8 06 44 f2 fd 41 03 1e 89 da ec <0f> b6 c0 5b 41 5c 41 5e 41 5f e9 01 83 6d 04 cc 44 89 f9 80 e1 07 RSP: 0018:ffffc90000006a58 EFLAGS: 00000006 RAX: 1ffffffff2a15d05 RBX: 00000000000003f9 RCX: 0000000000000000 RDX: 00000000000003f9 RSI: 0000000000000001 RDI: ffffffff950aeee0 RBP: ffffc90000006c30 R08: 0000000000000003 R09: 0000000000000004 R10: dffffc0000000000 R11: ffffffff83fc6b70 R12: dffffc0000000000 R13: dffffc0000000000 R14: ffffffff950aef20 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff88812b2fb000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f635ade9d58 CR3: 0000000077a16000 CR4: 00000000003526f0 Call Trace: serial_port_in include/linux/serial_core.h:806 [inline] serial8250_console_write+0x4c4/0x15b0 drivers/tty/serial/8250/8250_port.c:3306 console_emit_next_record kernel/printk/printk.c:3129 [inline] console_flush_one_record kernel/printk/printk.c:3215 [inline] console_flush_all+0x57f/0x900 kernel/printk/printk.c:3289 __console_flush_and_unlock kernel/printk/printk.c:3319 [inline] console_unlock+0xb3/0x150 kernel/printk/printk.c:3359 vprintk_emit+0x352/0x450 kernel/printk/printk.c:2426 _printk+0xce/0x120 kernel/printk/printk.c:2451 print_task kernel/sched/debug.c:745 [inline] print_rq kernel/sched/debug.c:792 [inline] print_cpu+0x1341/0x22b0 kernel/sched/debug.c:977 sysrq_sched_debug_show+0x73/0x90 kernel/sched/debug.c:1061 show_state_filter+0x23a/0x2b0 kernel/sched/core.c:7868 kbd_keycode drivers/tty/vt/keyboard.c:1497 [inline] kbd_event+0x233e/0x3a40 drivers/tty/vt/keyboard.c:1515 input_handle_events_default+0xc8/0x170 drivers/input/input.c:2541 input_pass_values+0x55c/0x610 drivers/input/input.c:128 input_event_dispose+0x356/0x620 drivers/input/input.c:342 input_event+0x58/0x90 drivers/input/input.c:396 input_sync include/linux/input.h:464 [inline] hidinput_report_event+0x83/0xd0 drivers/hid/hid-input.c:1764 hid_report_raw_event+0x1501/0x1790 drivers/hid/hid-core.c:2081 __hid_input_report drivers/hid/hid-core.c:2144 [inline] hid_input_report+0x3b9/0x4b0 drivers/hid/hid-core.c:2166 hid_irq_in+0x2d8/0x5f0 drivers/hid/usbhid/hid-core.c:286 __usb_hcd_giveback_urb+0x22e/0x380 drivers/usb/core/hcd.c:1661 dummy_timer+0x756/0x3a00 drivers/usb/gadget/udc/dummy_hcd.c:1995 __run_hrtimer kernel/time/hrtimer.c:1777 [inline] __hrtimer_run_queues+0x460/0x9c0 kernel/time/hrtimer.c:1841 hrtimer_run_softirq+0x15f/0x260 kernel/time/hrtimer.c:1858 handle_softirqs+0x27d/0x850 kernel/softirq.c:622 __do_softirq kernel/softirq.c:656 [inline] invoke_softirq kernel/softirq.c:496 [inline] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:723 irq_exit_rcu+0x9/0x30 kernel/softirq.c:739 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1056 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1056 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:160 [inline] RIP: 0010:_raw_spin_unlock_irq+0x29/0x50 kernel/locking/spinlock.c:202 Code: 90 f3 0f 1e fa 53 48 89 fb 48 83 c7 18 48 8b 74 24 08 e8 7a b0 13 f9 48 89 df e8 b2 27 14 f9 e8 bd d4 37 f9 fb bf 01 00 00 00 42 b7 06 f9 65 8b 05 3b a7 68 05 85 c0 74 07 5b c3 cc cc cc cc RSP: 0018:ffffc90003cafa10 EFLAGS: 00000282 RAX: 9f57a67252cbc800 RBX: ffff8880b9039b40 RCX: 9f57a67252cbc800 RDX: 0000000000000000 RSI: ffffffff8a36efe5 RDI: 0000000000000001 RBP: ffffc90003cafc18 R08: ffffffff8bec4cb7 R09: 1ffffffff17d8996 R10: dffffc0000000000 R11: fffffbfff17d8997 R12: 0000000000800000 R13: dffffc0000000000 R14: 0000000000000000 R15: ffffe8ffffc310f8 process_one_work kernel/workqueue.c:3226 [inline] process_scheduled_works+0x85e/0x13d0 kernel/workqueue.c:3340 worker_thread+0x772/0xba0 kernel/workqueue.c:3421 kthread+0x600/0x770 kernel/kthread.c:463 ret_from_fork+0x3ed/0x810 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246 0 0 / I kworker/R-rdma_ 2084 2815.927194 E 2815.942917 1.400000 0.089939 3 100 0.000000 0.000000 0.000000 0 0 / I kworker/R-srp_r 2088 2816.786900 E 2816.802875 1.400000 0.045196 2 100 0.000000 0.000000 0.000000 0 0 / I kworker/u8:9 2355 3002.094834 E 3003.482815 1.400000 32.859728 49 120 0.000000 0.000000 0.000000 0 0 / I kworker/R-tls-s 2382 2920.163872 E 2920.179871 1.400000 0.064675 2 100 0.000000 0.000000 0.000000 0 0 / I kworker/R-ipv6_ 2384 2920.163874 E 2920.179876 1.400000 0.061643 2 100 0.000000 0.000000 0.000000 0 0 / I kworker/R-krdsd 2495 2957.402985 E 2957.419136 1.400000 0.000000 2 100 0.000000 0.000000 0.000000 0 0 / >R kworker/u8:10 2586 129137.027240 N 129138.385569 1.400000 105583.808246 1225 120 0.000000 0.000000 0.000000 0 0 / I kworker/u8:11 2623 24199.822366 E 24201.222366 1.400000 272.356234 755 120 0.000000 0.000000 0.000000 0 0 / R kworker/u8:12 2629 77777.569528 E 77778.950682 1.400000 720.033270 2538 120 0.000000 0.000000 0.000000 0 0 / R jbd2/sda1-8 3968 77775.221009 E 77776.621009 1.400000 17.078743 60 120 0.000000 0.000000 0.000000 0 0 / I kworker/R-ext4- 3969 3748.525869 E 3748.541860 1.400000 0.067685 2 100 0.000000 0.000000 0.000000 0 0 / S syslogd 3988 23997.834539 E 23998.982022 1.400000 110.926554 881 120 0.000000 0.000000 0.000000 0 0 / R acpid 3991 77780.197882 E 77781.597882 1.400000 42.929734 61 120 0.000000 0.000000 0.000000 0 0 / R klogd 3995 77779.087079 E 77780.487079 1.400000 125.626946 822 120 0.000000 0.000000 0.000000 0 0 / S dbus-daemon 4284 7614.144033 E 7615.544033 1.400000 2.523525 1 120 0.000000 0.000000 0.000000 0 0 / S dhcpcd 4302 8501.178943 E 8502.479024 1.400000 5.127367 23 120 0.000000 0.000000 0.000000 0 0 / S getty 4364 8084.688911 E 8085.311782 1.400000 21.065395 4 120 0.000000 0.000000 0.000000 0 0 / S dhcpcd 4367 15307.533732 E 15308.770251 1.400000 4.796821 6 120 0.000000 0.000000 0.000000 0 0 / S dhcpcd 4368 15908.585916 E 15909.804166 1.400000 4.707606 6 120 0.000000 0.000000 0.000000 0 0 / S dhcpcd 4369 15632.283036 E 15633.518197 1.400000 5.603620 6 120 0.000000 0.000000 0.000000 0 0 / S dhcpcd 4390 8198.908708 E 8200.136807 1.400000 4.450139 4 120 0.000000 0.000000 0.000000 0 0 / I kworker/u9:1 4507 10941.587807 E 10941.603741 1.400000 0.072908 2 100 0.000000 0.000000 0.000000 0 0 / S kworker/1:3 4677 24226.337620 E 24227.582386 1.400000 113.536593 138 120 0.000000 0.000000 0.000000 0 0 / S sshd-session 4860 14741.560057 E 14742.960057 1.400000 44.531516 8 120 0.000000 0.000000 0.000000 0 0 / S sshd-session 4862 23474.404615 E 23475.513288 1.400000 10.790924 7 120 0.000000 0.000000 0.000000 0 0 / R syz-execprog 4864 77770.764416 E 77772.164416 1.400000 34.396430 1229 120 0.000000 0.000000 0.000000 0 0 / R syz-execprog 4865 77772.043896 E 77773.443896 1.400000 1578.361975 459 120 0.000000 0.000000 0.000000 0 0 / S syz-execprog 4868 23989.686997 E 23991.049275 1.400000 996.063867 387 120 0.000000 0.000000 0.000000 0 0 / S syz-execprog 4869 15086.941181 E 15087.360333 1.400000 0.280848 1 120 0.000000 0.000000 0.000000 0 0 / R syz-executor 4872 77772.421513 E 77773.821513 1.400000 2750.317189 259 120 0.000000 0.000000 0.000000 0 0 / R syz-executor 5089 28.580842 N 29.181366 1.400000 617.689949 821 120 0.000000 0.000000 0.000000 0 0 /syz5 R syz-executor 5091 13.900736 E 15.300736 1.400000 635.087613 769 120 0.000000 0.000000 0.000000 0 0 /syz1 S syz-executor 5092 18589.453067 E 18590.824113 1.400000 14.266206 5 120 0.000000 0.000000 0.000000 0 0 / S syz-executor 5094 18595.811328 E 18597.102729 1.400000 16.272534 6 120 0.000000 0.000000 0.000000 0 0 / R syz-executor 5096 14.600610 E 15.930759 1.400000 616.555225 848 120 0.000000 0.000000 0.000000 0 0 /syz6 S syz-executor 5097 71.120172 E 72.520172 1.400000 630.695282 794 120 0.000000 0.000000 0.000000 0 0 /syz2 R syz-executor 5098 80.677499 E 82.077499 1.400000 609.532250 824 120 0.000000 0.000000 0.000000 0 0 /syz3 I kworker/R-wg-cr 5140 19074.812699 E 19074.828570 1.400000 0.071056 2 100 0.000000 0.000000 0.000000 0 0 / I kworker/R-wg-cr 5143 19101.063174 E 19101.079325 1.400000 0.017278 3 100 0.000000 0.000000 0.000000 0 0 / I kworker/R-wg-cr 5144 19108.451491 E 19108.467348 1.400000 0.073195 3 100 0.000000 0.000000 0.000000 0 0 / I kworker/R-wg-cr 5166 19250.909704 E 19250.925539 1.400000 0.056586 3 100 0.000000 0.000000 0.000000 0 0 / I kworker/R-wg-cr 5168 19263.855817 E 19263.871801 1.400000 0.069173 2 100 0.000000 0.000000 0.000000 0 0 / I kworker/R-wg-cr 5169 19271.735757 E 19271.751730 1.400000 0.044426 2 100 0.000000 0.000000 0.000000 0 0 / I kworker/R-wg-cr 5173 19305.757791 E 19305.773644 1.400000 0.070742 2 100 0.000000 0.000000 0.000000 0 0 / I kworker/R-wg-cr 5174 19317.580293 E 19317.596000 1.400000 0.069764 2 100 0.000000 0.000000 0.000000 0 0 / I kworker/R-wg-cr 5176 19336.022610 E 19336.038487 1.400000 0.053193 2 100 0.000000 0.000000 0.000000 0 0 / S napi/wg0-0 5270 23436.206080 E 23437.359281 1.400000 0.292880 3 120 0.000000 0.000000 0.000000 0 0 / S napi/wg0-0 5271 25189.732638 E 25191.097635 1.400000 0.146502 6 120 0.000000 0.000000 0.000000 0 0 / R napi/wg1-0 5273 77774.579967 E 77775.979967 1.400000 3.443692 5 120 0.000000 0.000000 0.000000 0 0 / S napi/wg1-0 5275 23445.967727 E 23447.292136 1.400000 0.126659 3 120 0.000000 0.000000 0.000000 0 0 / S napi/wg0-0 5291 25190.822495 E 25192.182811 1.400000 0.171927 4 120 0.000000 0.000000 0.000000 0 0 / S napi/wg0-0 5292 25191.109113 E 25192.417448 1.400000 0.207377 5 120 0.000000 0.000000 0.000000 0 0 / S napi/wg1-0 5295 23961.247014 E 23962.594301 1.400000 0.160283 4 120 0.000000 0.000000 0.000000 0 0 / S napi/wg0-0 5297 25190.577683 E 25191.940017 1.400000 0.162381 4 120 0.000000 0.000000 0.000000 0 0 / S napi/wg0-0 5298 25189.019395 E 25190.380424 1.400000 0.133508 5 120 0.000000 0.000000 0.000000 0 0 / S napi/wg2-0 5300 23542.452919 E 23543.743141 1.400000 0.281551 4 120 0.000000 0.000000 0.000000 0 0 / R napi/wg1-0 5301 77776.641998 E 77778.041998 1.400000 0.066503 4 120 0.000000 0.000000 0.000000 0 0 / S napi/wg1-0 5302 23487.056353 E 23488.250505 1.400000 0.271937 4 120 0.000000 0.000000 0.000000 0 0 / S napi/wg2-0 5303 23490.313945 E 23491.666613 1.400000 0.084365 3 120 0.000000 0.000000 0.000000 0 0 / S napi/wg2-0 5304 23487.236280 E 23488.556780 1.400000 0.145861 3 120 0.000000 0.000000 0.000000 0 0 / S napi/wg0-0 5307 25190.197067 E 25191.557599 1.400000 0.222455 4 120 0.000000 0.000000 0.000000 0 0 / S napi/wg0-0 5308 25191.012885 E 25192.375321 1.400000 0.187984 4 120 0.000000 0.000000 0.000000 0 0 / S napi/wg1-0 5312 24017.029110 E 24018.378154 1.400000 0.740605 4 120 0.000000 0.000000 0.000000 0 0 / S napi/wg2-0 5315 23593.935098 E 23595.294891 1.400000 0.080617 3 120 0.000000 0.000000 0.000000 0 0 / R napi/wg0-0 5326 77778.204691 E 77779.604691 1.400000 0.269913 4 120 0.000000 0.000000 0.000000 0 0 / R napi/wg0-0 5327 77778.137345 E 77779.537345 1.400000 0.140510 3 120 0.000000 0.000000 0.000000 0 0 / R napi/wg1-0 5331 77777.965300 E 77779.365300 1.400000 0.086736 4 120 0.000000 0.000000 0.000000 0 0 / S napi/wg2-0 5334 23609.708443 E 23610.984864 1.400000 0.173799 3 120 0.000000 0.000000 0.000000 0 0 / R syz.5.16 5876 28.520584 E 29.920584 1.400000 5.137242 20 120 0.000000 0.000000 0.000000 0 0 /syz5 R syz.5.16 5877 28.460328 E 29.860328 1.400000 6.931493 26 120 0.000000 0.000000 0.000000 0 0 /syz5 R syz.5.16 5903 28.520584 E 29.920584 1.400000 0.424432 4 120 0.000000 0.000000 0.000000 0 0 /syz5 S udevd 5878 23898.682688 E 23899.432096 1.400000 107.892352 122 120 0.000000 0.000000 0.000000 0 0 / S udevd 5880 23665.093925 E 23665.165275 1.400000 9.504310 9 120 0.000000 0.000000 0.000000 0 0 / S udevd 5881 23882.668586 E 23884.068586 1.400000 46.531386 43 120 0.000000 0.000000 0.000000 0 0 / R syz.1.17 5884 13.929246 N 15.329246 1.400000 5.080736 16 120 0.000000 0.000000 0.000000 0 0 /syz1 S syz.1.17 5885 12.458742 E 13.678415 1.400000 4.008326 29 120 0.000000 0.000000 0.000000 0 0 /syz1 S syz.1.17 5904 13.946140 N 13.962286 1.400000 0.683854 6 120 0.000000 0.000000 0.000000 0 0 /syz1 I kworker/1:4 5886 24465.601283 E 24467.001283 1.400000 282.066617 25 120 0.000000 0.000000 0.000000 0 0 / S kworker/1:5 5893 23973.178804 E 23974.446140 1.400000 96.214736 63 120 0.000000 0.000000 0.000000 0 0 / R syz.6.20 5895 19.103794 N 20.503794 1.400000 10.238557 11 120 0.000000 0.000000 0.000000 0 0 /syz6 R syz.3.19 5896 80.677499 E 82.077499 1.400000 5.011066 9 120 0.000000 0.000000 0.000000 0 0 /syz3 R syz.3.19 5897 80.677499 E 82.077499 1.400000 4.947059 26 120 0.000000 0.000000 0.000000 0 0 /syz3 Showing all locks held in the system: 1 lock held by kworker/0:0/9: 11 locks held by kworker/0:1/10: #0: ffff8881422cad48 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3232 [inline] #0: ffff8881422cad48 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_scheduled_works+0x937/0x13d0 kernel/workqueue.c:3340 #1: ffffc900000f7b60 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3233 [inline] #1: ffffc900000f7b60 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_scheduled_works+0x957/0x13d0 kernel/workqueue.c:3340 #2: ffff888020677198 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:895 [inline] #2: ffff888020677198 (&dev->mutex){....}-{4:4}, at: hub_event+0x11f/0x3c80 drivers/usb/core/hub.c:5899 #3: ffff8880603f4198 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:895 [inline] #3: ffff8880603f4198 (&dev->mutex){....}-{4:4}, at: __device_attach+0x84/0x360 drivers/base/dd.c:1006 #4: ffff88801c2ea160 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:895 [inline] #4: ffff88801c2ea160 (&dev->mutex){....}-{4:4}, at: __device_attach+0x84/0x360 drivers/base/dd.c:1006 #5: ffff88807d4bda20 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:895 [inline] #5: ffff88807d4bda20 (&dev->mutex){....}-{4:4}, at: __device_attach+0x84/0x360 drivers/base/dd.c:1006 #6: ffffffff8b622528 (input_mutex){+.+.}-{4:4}, at: class_mutex_intr_constructor include/linux/mutex.h:255 [inline] #6: ffffffff8b622528 (input_mutex){+.+.}-{4:4}, at: input_register_device+0x83d/0xdf0 drivers/input/input.c:2374 #7: ffff8880618345e0 (&led_cdev->led_access){+.+.}-{4:4}, at: led_classdev_register_ext+0x38b/0x7d0 drivers/leds/led-class.c:536 #8: ffffffff8b07c3d0 (triggers_list_lock){++++}-{4:4}, at: led_trigger_set_default+0x6f/0x260 drivers/leds/led-triggers.c:297 #9: ffff8880618344f8 (&led_cdev->trigger_lock){+.+.}-{4:4}, at: led_trigger_set_default+0x84/0x260 drivers/leds/led-triggers.c:298 #10: ffffffff8ab22378 (rcu_state.exp_mutex){+.+.}-{4:4}, at: exp_funnel_lock kernel/rcu/tree_exp.h:311 [inline] #10: ffffffff8ab22378 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x2f6/0x730 kernel/rcu/tree_exp.h:956 7 locks held by kworker/1:1/42: #0: ffff8881422cad48 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3232 [inline] #0: ffff8881422cad48 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_scheduled_works+0x937/0x13d0 kernel/workqueue.c:3340 #1: ffffc90000b27b60 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3233 [inline] #1: ffffc90000b27b60 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_scheduled_works+0x957/0x13d0 kernel/workqueue.c:3340 #2: ffff8880206a7198 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:895 [inline] #2: ffff8880206a7198 (&dev->mutex){....}-{4:4}, at: hub_event+0x11f/0x3c80 drivers/usb/core/hub.c:5899 #3: ffff888079352198 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:895 [inline] #3: ffff888079352198 (&dev->mutex){....}-{4:4}, at: __device_attach+0x84/0x360 drivers/base/dd.c:1006 #4: ffff888075041160 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:895 [inline] #4: ffff888075041160 (&dev->mutex){....}-{4:4}, at: __device_attach+0x84/0x360 drivers/base/dd.c:1006 #5: ffff888076df1a20 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:895 [inline] #5: ffff888076df1a20 (&dev->mutex){....}-{4:4}, at: __device_attach+0x84/0x360 drivers/base/dd.c:1006 #6: ffffffff8b622528 (input_mutex){+.+.}-{4:4}, at: class_mutex_intr_constructor include/linux/mutex.h:255 [inline] #6: ffffffff8b622528 (input_mutex){+.+.}-{4:4}, at: input_register_device+0x83d/0xdf0 drivers/input/input.c:2374 5 locks held by kworker/u8:10/2586: 1 lock held by udevd/4006: 2 locks held by getty/4364: #0: ffff88802ba7a0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x20/0x60 drivers/tty/tty_ldisc.c:243 #1: ffffc90002afb2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x3a9/0xf70 drivers/tty/n_tty.c:2211 7 locks held by kworker/1:3/4677: #0: ffff8881422cad48 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3232 [inline] #0: ffff8881422cad48 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_scheduled_works+0x937/0x13d0 kernel/workqueue.c:3340 #1: ffffc90003377b60 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3233 [inline] #1: ffffc90003377b60 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_scheduled_works+0x957/0x13d0 kernel/workqueue.c:3340 #2: ffff88802073f198 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:895 [inline] #2: ffff88802073f198 (&dev->mutex){....}-{4:4}, at: hub_event+0x11f/0x3c80 drivers/usb/core/hub.c:5899 #3: ffff88802a8b6198 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:895 [inline] #3: ffff88802a8b6198 (&dev->mutex){....}-{4:4}, at: __device_attach+0x84/0x360 drivers/base/dd.c:1006 #4: ffff888020140160 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:895 [inline] #4: ffff888020140160 (&dev->mutex){....}-{4:4}, at: __device_attach+0x84/0x360 drivers/base/dd.c:1006 #5: ffff88805cef5a20 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:895 [inline] #5: ffff88805cef5a20 (&dev->mutex){....}-{4:4}, at: __device_attach+0x84/0x360 drivers/base/dd.c:1006 #6: ffffffff8b622528 (input_mutex){+.+.}-{4:4}, at: class_mutex_intr_constructor include/linux/mutex.h:255 [inline] #6: ffffffff8b622528 (input_mutex){+.+.}-{4:4}, at: input_register_device+0x83d/0xdf0 drivers/input/input.c:2374 4 locks held by kworker/0:5/5890: #0: ffff8880187e0230 (&dev->event_lock#2){..-.}-{3:3}, at: class_spinlock_irqsave_constructor include/linux/spinlock.h:585 [inline] #0: ffff8880187e0230 (&dev->event_lock#2){..-.}-{3:3}, at: input_event+0x45/0x90 drivers/input/input.c:395 #1: ffffffff8ab1c820 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline] #1: ffffffff8ab1c820 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:867 [inline] #1: ffffffff8ab1c820 (rcu_read_lock){....}-{1:3}, at: class_rcu_constructor include/linux/rcupdate.h:1195 [inline] #1: ffffffff8ab1c820 (rcu_read_lock){....}-{1:3}, at: input_pass_values+0x68/0x610 drivers/input/input.c:119 #2: ffffffff8b12c438 (kbd_event_lock){..-.}-{3:3}, at: spin_lock include/linux/spinlock.h:351 [inline] #2: ffffffff8b12c438 (kbd_event_lock){..-.}-{3:3}, at: class_spinlock_constructor include/linux/spinlock.h:565 [inline] #2: ffffffff8b12c438 (kbd_event_lock){..-.}-{3:3}, at: kbd_event+0xc9/0x3a40 drivers/tty/vt/keyboard.c:1510 #3: ffffffff8ab1c820 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline] #3: ffffffff8ab1c820 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:867 [inline] #3: ffffffff8ab1c820 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 kernel/locking/lockdep.c:6775 7 locks held by kworker/1:5/5893: #0: ffff8881422cad48 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3232 [inline] #0: ffff8881422cad48 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_scheduled_works+0x937/0x13d0 kernel/workqueue.c:3340 #1: ffffc90003ccfb60 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3233 [inline] #1: ffffc90003ccfb60 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_scheduled_works+0x957/0x13d0 kernel/workqueue.c:3340 #2: ffff8881417dd198 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:895 [inline] #2: ffff8881417dd198 (&dev->mutex){....}-{4:4}, at: hub_event+0x11f/0x3c80 drivers/usb/core/hub.c:5899 #3: ffff88802a8b3198 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:895 [inline] #3: ffff88802a8b3198 (&dev->mutex){....}-{4:4}, at: __device_attach+0x84/0x360 drivers/base/dd.c:1006 #4: ffff888020144160 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:895 [inline] #4: ffff888020144160 (&dev->mutex){....}-{4:4}, at: __device_attach+0x84/0x360 drivers/base/dd.c:1006 #5: ffff88805cf01a20 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:895 [inline] #5: ffff88805cf01a20 (&dev->mutex){....}-{4:4}, at: __device_attach+0x84/0x360 drivers/base/dd.c:1006 #6: ffffffff8b622528 (input_mutex){+.+.}-{4:4}, at: class_mutex_intr_constructor include/linux/mutex.h:255 [inline] #6: ffffffff8b622528 (input_mutex){+.+.}-{4:4}, at: input_register_device+0x83d/0xdf0 drivers/input/input.c:2374 1 lock held by syz.6.20/5895: =============================================