ci2 starts bisection 2025-08-12 09:32:30.620369069 +0000 UTC m=+53969.619364242 bisecting fixing commit since c79648372d02944bf4a54d87e3901db05d0ac82e building syzkaller on fb8f743dc82ba3a879228aa71ce09fdc570665d1 ensuring issue is reproducible on original commit c79648372d02944bf4a54d87e3901db05d0ac82e testing commit c79648372d02944bf4a54d87e3901db05d0ac82e gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 0c216bc797d00c896c1e6d54676016fe6a9e946df70a76dce41d9f01313cb95c run #0: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #1: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #2: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #3: crashed: INFO: rcu detected stall in corrupted run #4: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #5: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #6: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #7: crashed: INFO: rcu detected stall in corrupted run #8: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #9: crashed: INFO: rcu detected stall in corrupted run #10: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #11: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #12: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #13: crashed: INFO: rcu detected stall in newfstat run #14: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #15: crashed: INFO: rcu detected stall in corrupted run #16: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #17: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #18: crashed: INFO: rcu detected stall in batadv_nc_worker run #19: crashed: INFO: rcu detected stall in corrupted representative crash: INFO: rcu detected stall in syscall_exit_to_user_mode, 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 c79648372d02944bf4a54d87e3901db05d0ac82e gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 254cd10cd5297b0e197ff07c9e2b21fc0d9feef0a70a7e62c982f538a4dd6dcb run #0: crashed: INFO: rcu detected stall in corrupted run #1: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #2: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #3: crashed: INFO: rcu detected stall in newfstatat run #4: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #5: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #6: crashed: INFO: rcu detected stall in corrupted run #7: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #8: crashed: INFO: rcu detected stall in corrupted run #9: crashed: no output from test machine representative crash: INFO: rcu detected stall in corrupted, types: [HANG] the bug reproduces without the instrumentation disabling configs for [memleak ubsan bug_or_warning kasan locking atomic_sleep], they are not needed kconfig minimization: base=3707 full=7423 leaves diff=2099 split chunks (needed=false): <2099> split chunk #0 of len 2099 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 c79648372d02944bf4a54d87e3901db05d0ac82e gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 559b71cae3457468670c26ee67ac96f1c23d93f860df4993ec3f21294b410989 run #0: crashed: INFO: rcu detected stall in corrupted run #1: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #2: crashed: INFO: rcu detected stall in rt_sigreturn run #3: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #4: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #5: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #6: crashed: INFO: rcu detected stall in corrupted run #7: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #8: crashed: INFO: rcu detected stall in corrupted run #9: OK representative crash: INFO: rcu detected stall in corrupted, types: [HANG] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [memleak ubsan bug_or_warning kasan locking atomic_sleep], they are not needed testing commit c79648372d02944bf4a54d87e3901db05d0ac82e gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a7fe9d91b02ce2ebb84f009e6389405a6ed205275840001b5cced05644f26994 all runs: OK false negative chance: 0.000 testing without sub-chunk 3/5 disabling configs for [memleak ubsan bug_or_warning kasan locking atomic_sleep], they are not needed testing commit c79648372d02944bf4a54d87e3901db05d0ac82e gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 696a2d131166b224808963249622937a92a499a3f902b63d41812d369839d043 run #0: crashed: INFO: rcu detected stall in corrupted run #1: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #2: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #3: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #4: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #5: crashed: INFO: rcu detected stall in corrupted run #6: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #7: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #8: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #9: 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-executor170300380" "root@10.128.0.187:./syz-executor170300380"]: exit status 255 Executing: program /usr/bin/ssh host 10.128.0.187, user root, command sftp OpenSSH_9.2p1 Debian-2+deb12u6, OpenSSL 3.0.16 11 Feb 2025 debug1: Reading configuration data /dev/null debug1: Connecting to 10.128.0.187 [10.128.0.187] port 22. debug1: connect to address 10.128.0.187 port 22: Connection timed out ssh: connect to host 10.128.0.187 port 22: Connection timed out scp: Connection closed representative crash: INFO: rcu detected stall in corrupted, 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 c79648372d02944bf4a54d87e3901db05d0ac82e gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 64c1ab61152ecbe3bd7f61d1ba14ea2edeeb5a827f375506dcf45d8d6d0e4d4e run #0: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #1: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #2: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode 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 corrupted run #6: crashed: INFO: rcu detected stall in syscall_enter_from_user_mode run #7: crashed: INFO: rcu detected stall in corrupted run #8: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #9: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode representative crash: INFO: rcu detected stall in syscall_exit_to_user_mode, types: [HANG] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [atomic_sleep memleak ubsan bug_or_warning kasan locking], they are not needed testing commit c79648372d02944bf4a54d87e3901db05d0ac82e gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 99ca34c4228a39a334843ef6aa885c10532e9e537bb3f6010ba761112add8ea6 run #0: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #1: crashed: INFO: rcu detected stall in corrupted run #2: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode 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 corrupted run #6: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #7: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #8: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #9: crashed: INFO: rcu detected stall in corrupted representative crash: INFO: rcu detected stall in syscall_exit_to_user_mode, types: [HANG] the chunk can be dropped minimized to 420 configs; suspects: [6LOWPAN ACPI_WMI ARCH_ENABLE_MEMORY_HOTREMOVE ASUS_WMI BLK_DEV_ZONED CHARGER_BQ24190 CMA DAX DAX_DRIVER DEFAULT_PFIFO_FAST DEVICE_PRIVATE DEV_COREDUMP DEV_DAX DEV_PAGEMAP_OPS DIMLIB DLM DLN2_ADC DMABUF_HEAPS DMABUF_HEAPS_CMA DMABUF_HEAPS_SYSTEM DMABUF_MOVE_NOTIFY DMA_CMA DMA_ENGINE_RAID 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_BOCHS DRM_BRIDGE DRM_CIRRUS_QEMU DRM_DEBUG_MM DRM_DP_AUX_CHARDEV 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_ORIENTATION_QUIRKS DRM_SIMPLEDRM DRM_TTM DRM_TTM_HELPER DRM_UDL DRM_VGEM DRM_VIRTIO_GPU DRM_VKMS DRM_VMWGFX DRM_VMWGFX_FBCON DRM_VRAM_HELPER DUMMY DVB_AF9013 DVB_AF9033 DVB_AS102 DVB_AS102_FE DVB_B2C2_FLEXCOP DVB_B2C2_FLEXCOP_USB DVB_CORE DVB_DIB3000MB DVB_DIB3000MC DVB_EC100 DVB_GP8PSK_FE DVB_RTL2830 DVB_RTL2832 DVB_RTL2832_SDR DVB_TEST_DRIVERS DVB_TTUSB_BUDGET DVB_TTUSB_DEC DVB_USB DVB_USB_A800 DVB_USB_AF9005 DVB_USB_AF9005_REMOTE DVB_USB_AF9015 DVB_USB_AF9035 DVB_USB_ANYSEE DVB_USB_AU6610 DVB_USB_AZ6007 DVB_USB_AZ6027 DVB_USB_CE6230 DVB_USB_CINERGY_T2 DVB_USB_CXUSB DVB_USB_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 EEPROM_93CX6 EFS_FS ENCRYPTED_KEYS EQUALIZER EROFS_FS EROFS_FS_POSIX_ACL EROFS_FS_SECURITY EROFS_FS_XATTR EROFS_FS_ZIP EVM EVM_ADD_XATTRS EVM_ATTR_FSUUID EXFAT_FS EXPORTFS_BLOCK_OPS EXT3_FS EXT3_FS_POSIX_ACL EXT3_FS_SECURITY EXTCON EXTCON_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_BOOT_VESA_SUPPORT FB_CFB_COPYAREA FB_CFB_FILLRECT FB_CFB_IMAGEBLIT FB_CMDLINE FB_DEFERRED_IO FB_NOTIFY FB_SYS_COPYAREA FB_SYS_FILLRECT FB_SYS_FOPS FB_SYS_IMAGEBLIT FB_TILEBLITTING FB_VESA FB_VGA16 FB_VIRTUAL FDDI FIREWIRE FIREWIRE_NET FIREWIRE_OHCI FIREWIRE_SBP2 FONT_8x16 FONT_8x8 FONT_SUPPORT FRAMEBUFFER_CONSOLE FRAMEBUFFER_CONSOLE_DETECT_PRIMARY FRAMEBUFFER_CONSOLE_ROTATION FS_DAX FS_DAX_PMD FS_ENCRYPTION FS_ENCRYPTION_ALGS FS_VERITY FS_VERITY_BUILTIN_SIGNATURES FTL FUSE_DAX FUSE_FS FW_LOADER_COMPRESS FW_LOADER_PAGED_BUF FW_LOADER_USER_HELPER FW_LOADER_USER_HELPER_FALLBACK GACT_PROB GARP GENERIC_PHY GFS2_FS GFS2_FS_LOCKING_DLM GOOGLE_COREBOOT_TABLE GOOGLE_FIRMWARE GOOGLE_MEMCONSOLE GOOGLE_MEMCONSOLE_COREBOOT GOOGLE_VPD GPIOLIB GPIOLIB_IRQCHIP GPIO_ACPI GPIO_DLN2 GPIO_VIPERBOARD GREENASIA_FF GREYBUS GREYBUS_BRIDGED_PHY GREYBUS_ES2 GREYBUS_HID GREYBUS_USB GTP HAVE_ARCH_USERFAULTFD_MINOR HAVE_ARCH_USERFAULTFD_WP HAVE_BOOTMEM_INFO_NODE HAVE_KVM_CPU_RELAX_INTERCEPT HAVE_KVM_EVENTFD HAVE_KVM_IRQCHIP HAVE_KVM_IRQFD HAVE_KVM_IRQ_BYPASS HAVE_KVM_IRQ_ROUTING HAVE_KVM_MSI HAVE_KVM_NO_POLL HAVE_KVM_PM_NOTIFIER HAVE_SCHED_AVG_IRQ HDLC HDLC_CISCO HDLC_FR HDLC_PPP HDLC_RAW HDLC_RAW_ETH HDLC_X25 HDMI HFSPLUS_FS HFS_FS HID_ACCUTOUCH HID_ACRUX HID_ACRUX_FF HID_ALPS HID_APPLEIR HID_ASUS HID_AUREAL HID_BATTERY_STRENGTH HID_BETOP_FF HID_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_FT260 HID_GEMBIRD HID_GFRM HID_GLORIOUS HID_GREENASIA HID_GT683R HID_HOLTEK HID_ICADE HID_JABRA HID_KEYTOUCH HID_KYE HID_LCPOWER HID_LED HID_LENOVO HID_LOGITECH_DJ HID_LOGITECH_HIDPP HID_MACALLY HID_MAGICMOUSE HID_MALTRON HID_MAYFLASH HID_MCP2221 HID_MULTITOUCH HID_NTI HID_ORTEK HID_PENMOUNT HID_PICOLCD HID_PICOLCD_BACKLIGHT HID_PICOLCD_CIR HID_PICOLCD_FB HID_PICOLCD_LCD HID_PICOLCD_LEDS HID_PLANTRONICS HID_PRIMAX HID_PRODIKEYS HID_RETRODE HID_RMI HID_ROCCAT HID_SAITEK HID_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_SPEEDLINK HID_STEAM HID_STEELSERIES HID_THINGM HID_TIVO HID_TWINHAN HID_U2FZERO HID_UCLOGIC HID_UDRAW_PS3 HID_VIEWSONIC HID_VIVALDI HID_WACOM HID_WALTOP HID_WIIMOTE HID_XINMO HID_ZYDACRON HMM_MIRROR HOLTEK_FF HOTPLUG_PCI_PCIE HPET_MMAP HPET_MMAP_DEFAULT HPFS_FS I2C_ALGOBIT I2C_CHARDEV I2C_CP2615 I2C_DIOLAN_U2C I2C_DLN2 I2C_MUX I2C_MUX_REG I2C_ROBOTFUZZ_OSIF I2C_SI4713 I2C_SLAVE I2C_SLAVE_EEPROM I2C_TINY_USB I2C_VIPERBOARD IEEE802154 IEEE802154_6LOWPAN IEEE802154_ATUSB IEEE802154_DRIVERS IEEE802154_HWSIM IEEE802154_NL802154_EXPERIMENTAL IEEE802154_SOCKET IFB IIO IIO_BUFFER IIO_KFIFO_BUF IIO_TRIGGER IIO_TRIGGERED_BUFFER IKCONFIG IKCONFIG_PROC IMA IMA_APPRAISE IMA_APPRAISE_MODSIG IMA_DEFAULT_HASH_SHA256 IMA_LSM_RULES IMA_MEASURE_ASYMMETRIC_KEYS IMA_NG_TEMPLATE IMA_QUEUE_EARLY_BOOT_KEYS IMA_READ_POLICY IMA_WRITE_POLICY INET6_ESPINTCP INET6_ESP_OFFLOAD INET6_IPCOMP INET6_TUNNEL INET6_XFRM_TUNNEL INET_AH INET_DCCP_DIAG INET_DIAG INET_DIAG_DESTROY INET_ESP INET_ESPINTCP INET_ESP_OFFLOAD INET_IPCOMP INET_MPTCP_DIAG INET_RAW_DIAG INET_SCTP_DIAG INET_TCP_DIAG INET_UDP_DIAG INET_XFRM_TUNNEL INFINIBAND INFINIBAND_ADDR_TRANS INFINIBAND_ADDR_TRANS_CONFIGFS INFINIBAND_IPOIB INFINIBAND_IPOIB_CM INFINIBAND_IPOIB_DEBUG INFINIBAND_ISER INFINIBAND_ON_DEMAND_PAGING INFINIBAND_RTRS INFINIBAND_SRP INFINIBAND_USER_ACCESS INFINIBAND_USER_MAD INFINIBAND_USER_MEM INPUT_ATI_REMOTE2 INPUT_CM109 INPUT_IMS_PCU INPUT_JOYDEV INPUT_KEYSPAN_REMOTE INPUT_LEDS INPUT_MOUSEDEV INPUT_MOUSEDEV_PSAUX INPUT_POWERMATE INPUT_UINPUT INPUT_YEALINK INTEGRITY INTEGRITY_ASYMMETRIC_KEYS INTEGRITY_AUDIT INTEGRITY_SIGNATURE INTEGRITY_TRUSTED_KEYRING INTEL_CHT_INT33FE INTEL_IDMA64 INTEL_IOATDMA INTEL_IOMMU_DEFAULT_ON INTEL_IOMMU_SVM INTERVAL_TREE IOMMU_SVA_LIB IP6_NF_MATCH_AH IP6_NF_MATCH_EUI64 IP6_NF_MATCH_FRAG IP6_NF_MATCH_HL IP6_NF_MATCH_MH IP6_NF_MATCH_OPTS IP6_NF_MATCH_RPFILTER IP6_NF_MATCH_RT IP6_NF_MATCH_SRH IP6_NF_NAT IP6_NF_RAW IP6_NF_SECURITY IP6_NF_TARGET_HL IP6_NF_TARGET_MASQUERADE IP6_NF_TARGET_NPT IP6_NF_TARGET_SYNPROXY IPV6_FOU IPV6_FOU_TUNNEL IPV6_GRE IPV6_ILA IPV6_MIP6 IPV6_MROUTE IPV6_MROUTE_MULTIPLE_TABLES IPV6_MULTIPLE_TABLES IPV6_OPTIMISTIC_DAD IPV6_PIMSM_V2 IPV6_ROUTER_PREF IPV6_ROUTE_INFO IPV6_RPL_LWTUNNEL IPV6_SEG6_BPF IPV6_SEG6_HMAC IPV6_SEG6_LWTUNNEL IPV6_SIT_6RD IPV6_SUBTREES IPV6_TUNNEL IPV6_VTI IPVLAN IPVLAN_L3S IPVTAP IP_DCCP IP_DCCP_CCID3 IP_DCCP_TFRC_LIB IP_FIB_TRIE_STATS IP_MROUTE_MULTIPLE_TABLES IP_NF_ARPFILTER IP_NF_ARPTABLES IP_NF_ARP_MANGLE IP_NF_MATCH_AH IP_NF_MATCH_ECN IP_NF_MATCH_RPFILTER IP_NF_MATCH_TTL IP_NF_RAW IP_NF_SECURITY IP_NF_TARGET_CLUSTERIP IP_NF_TARGET_ECN IP_NF_TARGET_NETMAP IP_NF_TARGET_REDIRECT IP_NF_TARGET_SYNPROXY IP_NF_TARGET_TTL IP_ROUTE_CLASSID IP_SCTP IP_SET IP_SET_BITMAP_IP IP_SET_BITMAP_IPMAC IP_SET_BITMAP_PORT IP_SET_HASH_IP IP_SET_HASH_IPMAC IP_SET_HASH_IPMARK IP_SET_HASH_IPPORT IP_SET_HASH_IPPORTIP IP_SET_HASH_IPPORTNET IP_SET_HASH_MAC IP_SET_HASH_NET IP_SET_HASH_NETIFACE IP_SET_HASH_NETNET IRQ_TIME_ACCOUNTING LAPB LCD_CLASS_DEVICE MAC802154 MEDIA_DIGITAL_TV_SUPPORT MEDIA_RADIO_SUPPORT MEDIA_SDR_SUPPORT MEDIA_SUPPORT MEDIA_TEST_SUPPORT MEDIA_USB_SUPPORT MEMORY_HOTPLUG MEMORY_HOTREMOVE MFD_DLN2 MFD_VIPERBOARD MPTCP MTD NETFILTER_ADVANCED NET_ACT_GACT NET_ACT_MIRRED NET_IPGRE_DEMUX NET_SCH_DEFAULT NFT_FWD_NETDEV NF_TABLES NF_TABLES_NETDEV RADIO_ADAPTERS RADIO_SI4713 RAS RC_CORE REGULATOR RFKILL SND SOUND STAGING TCG_TPM TRANSPARENT_HUGEPAGE TRUSTED_KEYS TYPEC TYPEC_MUX_PI3USB30532 USB_ROLES_INTEL_XHCI USB_ROLE_SWITCH VIDEO_DEV VIDEO_V4L2 VIRTIO_FS WAN ZONE_DEVICE] disabling configs for [memleak ubsan bug_or_warning kasan locking atomic_sleep], they are not needed determining the merge base between c79648372d02944bf4a54d87e3901db05d0ac82e and 53e760d8949895390e256e723e7ee46618310361 8bb7eca972ad531c9b149c0a51ab43a417385813/Linux 5.15 is a merge base, check if it has the bug testing commit 8bb7eca972ad531c9b149c0a51ab43a417385813 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6c7f2c886f9bdc33306f229fcdf9fbb39ebc1defe45ae6c31ff681015562cf1a run #0: crashed: INFO: rcu detected stall in rt_sigreturn run #1: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #2: crashed: INFO: rcu detected stall in rt_sigreturn run #3: crashed: INFO: rcu detected stall in corrupted run #4: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #5: crashed: INFO: rcu detected stall in corrupted run #6: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #7: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #8: crashed: INFO: rcu detected stall in corrupted run #9: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode representative crash: INFO: rcu detected stall in rt_sigreturn, types: [HANG] testing current HEAD 53e760d8949895390e256e723e7ee46618310361 testing commit 53e760d8949895390e256e723e7ee46618310361 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: dcbac1e892729fd0ba4f48acb7b7e14f67ae7f7e6f9c82861d7abf8abe5405c1 all runs: OK false negative chance: 0.000 # git bisect start 53e760d8949895390e256e723e7ee46618310361 8bb7eca972ad531c9b149c0a51ab43a417385813 Bisecting: 168549 revisions left to test after this (roughly 17 steps) [6e32dfcccfcc58e46c484357ee060d42d8481df8] Merge tag 'soundwire-6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/soundwire determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit 6e32dfcccfcc58e46c484357ee060d42d8481df8 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: fbe8c1fee361f4fb91e370aa58ea097475b713b12bb4a060caaebc858c9ab833 run #0: crashed: INFO: rcu detected stall in corrupted run #1: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #2: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode 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 syscall_exit_to_user_mode run #6: crashed: INFO: rcu detected stall in corrupted run #7: crashed: INFO: rcu detected stall in corrupted 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 corrupted, types: [HANG] # git bisect good 6e32dfcccfcc58e46c484357ee060d42d8481df8 Bisecting: 84355 revisions left to test after this (roughly 16 steps) [ae18d300e579ddb86187114bab8fcecf6b3ca9f2] Merge branch 'selftests-net-add-packetdrill' determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit ae18d300e579ddb86187114bab8fcecf6b3ca9f2 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 8d636ad42b5a707ac84182424201fa849aa705729a44cca42eea88da3bcf59c3 all runs: crashed: INFO: rcu detected stall in corrupted representative crash: INFO: rcu detected stall in corrupted, types: [HANG] # git bisect good ae18d300e579ddb86187114bab8fcecf6b3ca9f2 Bisecting: 42216 revisions left to test after this (roughly 15 steps) [7d20aa5c32ac8bd272b5470ddbd7ac6e0cb35714] Merge tag 'pm-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit 7d20aa5c32ac8bd272b5470ddbd7ac6e0cb35714 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 2e14bbfa7be5614ae3678b444f7df55a0b8596fad4b40e3cd475e14961ada361 all runs: boot failed: BUG: unable to handle kernel NULL pointer dereference in msix_capability_init unable to determine the verdict: 0 good runs (wanted 5), for bad wanted 5 in total, got 0 # git bisect skip 7d20aa5c32ac8bd272b5470ddbd7ac6e0cb35714 Bisecting: 42176 revisions left to test after this (roughly 15 steps) [bdab2977e47a2eac50e3a0ce23eb5eab110fd490] Merge tag 'fsverity-for-linus' of git://git.kernel.org/pub/scm/fs/fsverity/linux determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit bdab2977e47a2eac50e3a0ce23eb5eab110fd490 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 14050fb01b396beaf2a71ab34c92c32319715e9f6640ffafebed7744392880c8 all runs: boot failed: BUG: unable to handle kernel NULL pointer dereference in msix_capability_init unable to determine the verdict: 0 good runs (wanted 5), for bad wanted 5 in total, got 0 # git bisect skip bdab2977e47a2eac50e3a0ce23eb5eab110fd490 Bisecting: 42176 revisions left to test after this (roughly 15 steps) [eb43efd062d10bacdf6b50df0e300a7049474e51] m68k: Replace memcpy() + manual NUL-termination with strscpy() determine whether the revision contains the guilty commit revision bdab2977e47a2eac50e3a0ce23eb5eab110fd490 crashed and is reachable testing commit eb43efd062d10bacdf6b50df0e300a7049474e51 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 05f1dbb8608e6980d1edc093b272aed5f8caa7599a81f7c5206cb659dfd82232 all runs: OK false negative chance: 0.000 # git bisect bad eb43efd062d10bacdf6b50df0e300a7049474e51 Bisecting: 27981 revisions left to test after this (roughly 15 steps) [10fad79846e49f67ad1a0a05910837125c6ca9ad] octeon_ep: update tx/rx stats locally for persistence determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit 10fad79846e49f67ad1a0a05910837125c6ca9ad gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 66c61ab2b838ef6121a4299ea00f13c0ecb7ebbe15c700e8e5a19b94a12264ad all runs: OK false negative chance: 0.000 # git bisect bad 10fad79846e49f67ad1a0a05910837125c6ca9ad Bisecting: 13990 revisions left to test after this (roughly 14 steps) [b682aa788e5f9f1ddacdfbb453e49fd3f4e83721] ASoC: amd: yc: Add a quirk for microfone on Lenovo ThinkPad P14s Gen 5 21MES00B00 determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit b682aa788e5f9f1ddacdfbb453e49fd3f4e83721 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 50be50e98c95256c57f41e97006ae87d51afdbea6d0a90567684b678aeff887c all runs: OK false negative chance: 0.000 # git bisect bad b682aa788e5f9f1ddacdfbb453e49fd3f4e83721 Bisecting: 6804 revisions left to test after this (roughly 13 steps) [617a814f14b8914271f7a70366d72c6196d17663] Merge tag 'mm-stable-2024-09-20-02-31' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit 617a814f14b8914271f7a70366d72c6196d17663 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 8189b258f2fe9fc9c2e8cffcfdd8e6c3c1479674a36d6f4a99c292c66374911d all runs: OK false negative chance: 0.000 # git bisect bad 617a814f14b8914271f7a70366d72c6196d17663 Bisecting: 3771 revisions left to test after this (roughly 12 steps) [194fcd20ebccbc34bba80d7d9b203920087bb01d] Merge tag 'linux_kselftest-kunit-6.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest determine whether the revision contains the guilty commit revision ae18d300e579ddb86187114bab8fcecf6b3ca9f2 crashed and is reachable testing commit 194fcd20ebccbc34bba80d7d9b203920087bb01d gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 6a80db611760673057f05c18fc23132a34ffb10e6f888fbbf0df87c3a6b738c5 all runs: crashed: INFO: rcu detected stall in corrupted representative crash: INFO: rcu detected stall in corrupted, types: [HANG] # git bisect good 194fcd20ebccbc34bba80d7d9b203920087bb01d Bisecting: 2100 revisions left to test after this (roughly 11 steps) [176000734ee2978121fde22a954eb1eabb204329] Merge tag 'ata-6.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/libata/linux determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit 176000734ee2978121fde22a954eb1eabb204329 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 4104d4bfb9020a45d505dcc84097ac76c1120267e9d93988a89220b47dc2cbac run #0: crashed: INFO: rcu detected stall in corrupted 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 corrupted run #5: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #6: crashed: INFO: rcu detected stall in corrupted run #7: crashed: INFO: rcu detected stall in corrupted run #8: crashed: INFO: rcu detected stall in corrupted run #9: crashed: BUG: workqueue lockup representative crash: INFO: rcu detected stall in corrupted, types: [HANG] # git bisect good 176000734ee2978121fde22a954eb1eabb204329 Bisecting: 1047 revisions left to test after this (roughly 10 steps) [8bdb468dd7a5d17f8556afdd4c8d046939ff965f] Merge tag 'drm-xe-next-2024-08-28' of https://gitlab.freedesktop.org/drm/xe/kernel into drm-next determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit 8bdb468dd7a5d17f8556afdd4c8d046939ff965f gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 08fe7ffe00ba3d5b5a4aa95dbe912865607c318b7cb85757bd6a7cdc9b4ca813 run #0: crashed: INFO: rcu detected stall in corrupted 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 syscall_exit_to_user_mode run #4: crashed: INFO: rcu detected stall in corrupted 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 syscall_exit_to_user_mode 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 corrupted, types: [HANG] # git bisect good 8bdb468dd7a5d17f8556afdd4c8d046939ff965f Bisecting: 512 revisions left to test after this (roughly 9 steps) [171754c3808214d4fd8843eab584599a429deb52] Merge tag 'vfs-6.12.blocksize' of gitolite.kernel.org:pub/scm/linux/kernel/git/vfs/vfs determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit 171754c3808214d4fd8843eab584599a429deb52 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 940d6f416d91fa1af6b3b589589b2b4120a83b21a2e3ec8c33861c2a9e4dcbc3 all runs: OK false negative chance: 0.000 # git bisect bad 171754c3808214d4fd8843eab584599a429deb52 Bisecting: 274 revisions left to test after this (roughly 8 steps) [f1a4dceeb2bd4b4478e4f0c77dac55569d153fb3] drm/xe: Fix missing conversion to xe_display_pm_runtime_resume determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit f1a4dceeb2bd4b4478e4f0c77dac55569d153fb3 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 7357eeb2c0d5a46dee1224f69829f355b19450988fe96e387d8d08c6e760ff34 all runs: crashed: INFO: rcu detected stall in corrupted representative crash: INFO: rcu detected stall in corrupted, types: [HANG] # git bisect good f1a4dceeb2bd4b4478e4f0c77dac55569d153fb3 Bisecting: 116 revisions left to test after this (roughly 7 steps) [a1d1eb2f57501b2e7e2076ce89b3f3a666ddbfdd] Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi determine whether the revision contains the guilty commit revision 8bdb468dd7a5d17f8556afdd4c8d046939ff965f crashed and is reachable testing commit a1d1eb2f57501b2e7e2076ce89b3f3a666ddbfdd gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 06ab8437a3aa722a3dddc8c596022585e4a922ca81e16bb04830694294b238a0 run #0: crashed: INFO: rcu detected stall in corrupted run #1: crashed: INFO: rcu detected stall in corrupted run #2: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #3: crashed: INFO: rcu detected stall in corrupted run #4: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode 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: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #9: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode representative crash: INFO: rcu detected stall in corrupted, types: [HANG] # git bisect good a1d1eb2f57501b2e7e2076ce89b3f3a666ddbfdd Bisecting: 58 revisions left to test after this (roughly 6 steps) [729288bc68560b4d5b094cb7a6f794c752ef22a2] kernel/sched: Fix util_est accounting for DELAY_DEQUEUE determine whether the revision contains the guilty commit revision 6e32dfcccfcc58e46c484357ee060d42d8481df8 crashed and is reachable testing commit 729288bc68560b4d5b094cb7a6f794c752ef22a2 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 56a9998a9176fd06d2d1633e3d56eb3985e4c87fb7aca2e229e0a15562591d75 all runs: OK false negative chance: 0.000 # git bisect bad 729288bc68560b4d5b094cb7a6f794c752ef22a2 Bisecting: 28 revisions left to test after this (roughly 5 steps) [abc158c82ae555078aa5dd2d8407c3df0f868904] sched: Prepare generic code for delayed dequeue determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit abc158c82ae555078aa5dd2d8407c3df0f868904 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 230a0a9951abf3701a058becef434c97912ab6adf39cfacbe80b11deaa624168 all runs: OK false negative chance: 0.000 # git bisect bad abc158c82ae555078aa5dd2d8407c3df0f868904 Bisecting: 14 revisions left to test after this (roughly 4 steps) [5f6bd380c7bdbe10f7b4e8ddcceed60ce0714c6d] sched/rt: Remove default bandwidth control determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit 5f6bd380c7bdbe10f7b4e8ddcceed60ce0714c6d gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 2b014c6ed3b2e3f403b0e9e0ddda85f5c567015ae963d3b1dc336fa7364d1734 all runs: OK false negative chance: 0.000 # git bisect bad 5f6bd380c7bdbe10f7b4e8ddcceed60ce0714c6d Bisecting: 6 revisions left to test after this (roughly 3 steps) [c245910049d04fbfa85bb2f5acd591c24e9907c7] sched/core: Add clearing of ->dl_server in put_prev_task_balance() determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit c245910049d04fbfa85bb2f5acd591c24e9907c7 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 97590321b396fed7fb09b530528c0b9961f214526545e3ab4e8039fc26dfbeb0 run #0: crashed: INFO: rcu detected stall in corrupted 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 corrupted run #5: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #6: crashed: INFO: rcu detected stall in corrupted run #7: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode 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 corrupted, types: [HANG] # git bisect good c245910049d04fbfa85bb2f5acd591c24e9907c7 Bisecting: 3 revisions left to test after this (roughly 2 steps) [a110a81c52a9de73e2e57e826dd3bf0fd4c22226] sched/deadline: Deferrable dl server determine whether the revision contains the guilty commit revision c245910049d04fbfa85bb2f5acd591c24e9907c7 crashed and is reachable testing commit a110a81c52a9de73e2e57e826dd3bf0fd4c22226 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: c3e2cd6e4b0fb1eb298a178feba28a3f6a2321da9b4cae2ae9d68fc69538c44b run #0: crashed: INFO: rcu detected stall in corrupted 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 corrupted 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: crashed: INFO: rcu detected stall in corrupted run #9: crashed: BUG: workqueue lockup representative crash: INFO: rcu detected stall in corrupted, types: [HANG] # git bisect good a110a81c52a9de73e2e57e826dd3bf0fd4c22226 Bisecting: 1 revision left to test after this (roughly 1 step) [4b26cfdd395638918e370f62bd2c33e6f63ffb5e] sched/core: Fix priority checking for DL server picks determine whether the revision contains the guilty commit revision a110a81c52a9de73e2e57e826dd3bf0fd4c22226 crashed and is reachable testing commit 4b26cfdd395638918e370f62bd2c33e6f63ffb5e gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 3644037eaac52429b4107c7ba559bb7c2e306b1ab683b8479c937f31f850e3df run #0: crashed: INFO: rcu detected stall in corrupted 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 corrupted run #5: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #6: crashed: INFO: rcu detected stall in corrupted run #7: crashed: INFO: rcu detected stall in corrupted run #8: crashed: INFO: rcu detected stall in corrupted run #9: crashed: BUG: workqueue lockup representative crash: INFO: rcu detected stall in corrupted, types: [HANG] # git bisect good 4b26cfdd395638918e370f62bd2c33e6f63ffb5e Bisecting: 0 revisions left to test after this (roughly 0 steps) [c8a85394cfdb4696b4e2f8a0f3066a1c921af426] sched/core: Fix picking of tasks for core scheduling with DL server determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit c8a85394cfdb4696b4e2f8a0f3066a1c921af426 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: de2eb64715ca983dd8df5216774e5b1bb4121f58b015e50a79d8757e464b2828 run #0: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode 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 corrupted 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: crashed: INFO: rcu detected stall in corrupted run #9: crashed: INFO: rcu detected stall in corrupted representative crash: INFO: rcu detected stall in syscall_exit_to_user_mode, types: [HANG] # git bisect good c8a85394cfdb4696b4e2f8a0f3066a1c921af426 5f6bd380c7bdbe10f7b4e8ddcceed60ce0714c6d is the first bad commit commit 5f6bd380c7bdbe10f7b4e8ddcceed60ce0714c6d Author: Peter Zijlstra Date: Mon May 27 14:06:55 2024 +0200 sched/rt: Remove default bandwidth control Now that fair_server exists, we no longer need RT bandwidth control unless RT_GROUP_SCHED. Enable fair_server with parameters equivalent to RT throttling. Signed-off-by: Peter Zijlstra (Intel) Signed-off-by: "Peter Zijlstra (Intel)" Signed-off-by: Daniel Bristot de Oliveira Signed-off-by: "Vineeth Pillai (Google)" Signed-off-by: Peter Zijlstra (Intel) Tested-by: Juri Lelli Link: https://lore.kernel.org/r/14d562db55df5c3c780d91940743acb166895ef7.1716811044.git.bristot@kernel.org kernel/sched/core.c | 9 +- kernel/sched/deadline.c | 5 +- kernel/sched/debug.c | 3 + kernel/sched/rt.c | 242 +++++++++++++++++++++--------------------------- kernel/sched/sched.h | 3 +- 5 files changed, 120 insertions(+), 142 deletions(-) accumulated error probability: 0.00 culprit signature: 2b014c6ed3b2e3f403b0e9e0ddda85f5c567015ae963d3b1dc336fa7364d1734 parent signature: de2eb64715ca983dd8df5216774e5b1bb4121f58b015e50a79d8757e464b2828 revisions tested: 30, total time: 7h57m35.62567367s (build: 2h53m33.463964785s, test: 4h46m4.333545054s) first good commit: 5f6bd380c7bdbe10f7b4e8ddcceed60ce0714c6d sched/rt: Remove default bandwidth control recipients (to): ["bristot@kernel.org" "juri.lelli@redhat.com" "peterz@infradead.org" "vineeth@bitbyteword.org"] recipients (cc): []