ci2 starts bisection 2025-07-16 23:20:28.432098255 +0000 UTC m=+12245.689437702 bisecting fixing commit since 98f47d0e9b8c557d3063d3ea661cbea1489af330 building syzkaller on 874a1386706482fe473dfe96f8a3acc52c1b2ba1 ensuring issue is reproducible on original commit 98f47d0e9b8c557d3063d3ea661cbea1489af330 testing commit 98f47d0e9b8c557d3063d3ea661cbea1489af330 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 9c9707ccdf90d1bac83677975ba8c1fdd032e2147bbb895cf425a86163b62176 run #0: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #1: crashed: INFO: rcu detected stall in batadv_nc_worker 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 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 batadv_nc_worker run #10: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #11: crashed: INFO: rcu detected stall in corrupted run #12: crashed: INFO: rcu detected stall in sys_readlink run #13: crashed: INFO: rcu detected stall in corrupted run #14: crashed: INFO: rcu detected stall in corrupted run #15: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode 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 cleanup_net run #19: 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] 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 98f47d0e9b8c557d3063d3ea661cbea1489af330 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 8d45e8648df87ff13d523de0aeecd29718cd9b5057592c6727572fdbb58d3b34 run #0: crashed: INFO: rcu detected stall in corrupted run #1: crashed: INFO: rcu detected stall in syscall_enter_from_user_mode 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 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 corrupted 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 corrupted, types: [HANG] the bug reproduces without the instrumentation disabling configs for [atomic_sleep memleak ubsan bug_or_warning kasan locking], they are not needed kconfig minimization: base=3707 full=7306 leaves diff=2040 split chunks (needed=false): <2040> split chunk #0 of len 2040 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 98f47d0e9b8c557d3063d3ea661cbea1489af330 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: f6a3acd745758056eb956895b66023fbb55cc18e31edf722e92e731caaf11843 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_enter_from_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 syscall_exit_to_user_mode run #8: crashed: INFO: rcu detected stall in rt_sigreturn run #9: crashed: INFO: rcu detected stall in corrupted representative crash: INFO: rcu detected stall in corrupted, types: [HANG] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [memleak ubsan bug_or_warning kasan locking atomic_sleep], they are not needed testing commit 98f47d0e9b8c557d3063d3ea661cbea1489af330 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: baa0aaa8c97e9373ee200939716978413a5d1cae2b13edb5b6d84be7a93cdfa6 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 98f47d0e9b8c557d3063d3ea661cbea1489af330 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 0e2294eddfa14c1767d1000bead43dfd32e682e2fef58cb748bfc95d04afb54f 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 corrupted 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 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 syscall_exit_to_user_mode, types: [HANG] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [ubsan bug_or_warning kasan locking atomic_sleep memleak], they are not needed testing commit 98f47d0e9b8c557d3063d3ea661cbea1489af330 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 1d564fc0201fbf044eeda0fae73986bbb7230834aa2c08172608d6bb8526a5ae 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 getpid 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_enter_from_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 syscall_exit_to_user_mode representative crash: INFO: rcu detected stall in corrupted, types: [HANG] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [memleak ubsan bug_or_warning kasan locking atomic_sleep], they are not needed testing commit 98f47d0e9b8c557d3063d3ea661cbea1489af330 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6a7df0709ee22243200c9f409d9a0281344f7ea7012c1bc20a8d4bd8fdd68a1b run #0: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #1: crashed: INFO: rcu detected stall in syscall_enter_from_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 syscall_exit_to_user_mode run #6: crashed: INFO: rcu detected stall in syscall_enter_from_user_mode run #7: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #8: crashed: INFO: rcu detected stall in syscall_enter_from_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 minimized to 408 configs; suspects: [6LOWPAN ACPI_WMI ARCH_ENABLE_MEMORY_HOTREMOVE ASUS_WMI CHARGER_BQ24190 CMA DAX_DRIVER DLM DRM DRM_FBDEV_EMULATION 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 GVE 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_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 IP_SET_HASH_NETPORT IP_SET_HASH_NETPORTNET IP_SET_LIST_SET IP_VS IP_VS_DH IP_VS_FO IP_VS_FTP IP_VS_IPV6 IP_VS_LBLC IP_VS_LBLCR IP_VS_LC IP_VS_MH IP_VS_NFCT IP_VS_NQ IP_VS_OVF IP_VS_PE_SIP IP_VS_PROTO_AH IP_VS_PROTO_AH_ESP IP_VS_PROTO_ESP IP_VS_PROTO_SCTP IP_VS_PROTO_TCP IP_VS_PROTO_UDP IP_VS_RR IP_VS_SED IP_VS_SH IP_VS_TWOS IP_VS_WLC IP_VS_WRR IRQ_BYPASS_MANAGER IRQ_POLL IRQ_TIME_ACCOUNTING IR_IGORPLUGUSB IR_IGUANA IR_IMON IR_IMON_RAW IR_MCEUSB IR_REDRAT3 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 NFT_FWD_NETDEV NF_TABLES NF_TABLES_NETDEV RADIO_ADAPTERS RADIO_SI4713 RAS RC_CORE RC_DEVICES REGULATOR RFKILL SND SOUND STAGING TRANSPARENT_HUGEPAGE 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 98f47d0e9b8c557d3063d3ea661cbea1489af330 and 155a3c003e555a7300d156a5252c004c392ec6b0 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: 73b06c2718ca36c2aa1e9c6d4a18d7e7666fc63e1f041c56b06d6d4b2cbb5ddf 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 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: 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] testing current HEAD 155a3c003e555a7300d156a5252c004c392ec6b0 testing commit 155a3c003e555a7300d156a5252c004c392ec6b0 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 97dc0b88a5168e881a17c35ac76a2a83d3baf3b8fd789ea2940a292b70d484ae all runs: OK false negative chance: 0.000 # git bisect start 155a3c003e555a7300d156a5252c004c392ec6b0 8bb7eca972ad531c9b149c0a51ab43a417385813 Bisecting: 162139 revisions left to test after this (roughly 17 steps) [3d3dfeb3aec7b612d266d500c82054f1fded4980] Merge tag 'for-6.6/block-2023-08-28' of git://git.kernel.dk/linux determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit 3d3dfeb3aec7b612d266d500c82054f1fded4980 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 42f74230c8457df526b3c11018013e0b56c44437baa95cdb5f2383101fa8c60a 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: INFO: rcu detected stall in syscall_exit_to_user_mode representative crash: INFO: rcu detected stall in corrupted, types: [HANG] # git bisect good 3d3dfeb3aec7b612d266d500c82054f1fded4980 Bisecting: 81850 revisions left to test after this (roughly 16 steps) [280e36f0d5b997173d014c07484c03a7f7750668] nsfs: use cleanup guard determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit 280e36f0d5b997173d014c07484c03a7f7750668 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 5029f3fd067e468ed7d288bf5dab60cc04ff8a3aa745fc66b52894332316594e all runs: crashed: INFO: rcu detected stall in corrupted representative crash: INFO: rcu detected stall in corrupted, types: [HANG] # git bisect good 280e36f0d5b997173d014c07484c03a7f7750668 Bisecting: 40950 revisions left to test after this (roughly 15 steps) [f96a974170b749e3a56844e25b31d46a7233b6f6] Merge tag 'lsm-pr-20250121' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/lsm determine whether the revision contains the guilty commit revision 3d3dfeb3aec7b612d266d500c82054f1fded4980 crashed and is reachable testing commit f96a974170b749e3a56844e25b31d46a7233b6f6 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 2d581a1d06f90e8a9c4f1aa165b94e46c7865c8961a9d296d952842047a6ff11 all runs: OK false negative chance: 0.000 # git bisect bad f96a974170b749e3a56844e25b31d46a7233b6f6 Bisecting: 20402 revisions left to test after this (roughly 14 steps) [4965ddb166992557a25848049f1a70e56050eb7a] Merge tag 'usb-6.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit 4965ddb166992557a25848049f1a70e56050eb7a gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 37b6d268e90f868fac495e34a1a4d536d07352d36ea509a690edcbeab75c0b61 all runs: OK false negative chance: 0.000 # git bisect bad 4965ddb166992557a25848049f1a70e56050eb7a Bisecting: 10242 revisions left to test after this (roughly 13 steps) [f723224742fc6d25f88a9d9036be4713398be65d] Merge tag 'nf-next-24-09-06' of git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf-next determine whether the revision contains the guilty commit revision 3d3dfeb3aec7b612d266d500c82054f1fded4980 crashed and is reachable testing commit f723224742fc6d25f88a9d9036be4713398be65d gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: b702a8fbc03d37f2b5234eeaef4d971d0280c0a8b7fd523982a503485c5f5a19 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 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 corrupted 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 corrupted, types: [HANG] # git bisect good f723224742fc6d25f88a9d9036be4713398be65d Bisecting: 5103 revisions left to test after this (roughly 12 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 f723224742fc6d25f88a9d9036be4713398be65d 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: c24160a0e3bd5150769976d4ec4f88ea9444b1b8af8160ea567918e7cf7c31ae 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 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 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 176000734ee2978121fde22a954eb1eabb204329 Bisecting: 2519 revisions left to test after this (roughly 11 steps) [440b65232829fad69947b8de983c13a525cc8871] Merge tag 'bpf-next-6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next determine whether the revision contains the guilty commit revision 176000734ee2978121fde22a954eb1eabb204329 crashed and is reachable testing commit 440b65232829fad69947b8de983c13a525cc8871 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 6047e5eb765502725da943af5e8dec5ae2f26c7070e0955d4b1366665554a71e all runs: OK false negative chance: 0.000 # git bisect bad 440b65232829fad69947b8de983c13a525cc8871 Bisecting: 1285 revisions left to test after this (roughly 10 steps) [741d73f587d5cc86db5e65cc107e031263302616] Merge tag 'amd-drm-next-6.12-2024-09-06' of https://gitlab.freedesktop.org/agd5f/linux into drm-next determine whether the revision contains the guilty commit revision 3d3dfeb3aec7b612d266d500c82054f1fded4980 crashed and is reachable testing commit 741d73f587d5cc86db5e65cc107e031263302616 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 5961157445e3ee4e198c2db860b4c36df29a82de3c7ff981548110b5728b0e8f all runs: crashed: INFO: rcu detected stall in corrupted representative crash: INFO: rcu detected stall in corrupted, types: [HANG] # git bisect good 741d73f587d5cc86db5e65cc107e031263302616 Bisecting: 482 revisions left to test after this (roughly 9 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 f723224742fc6d25f88a9d9036be4713398be65d 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: e1b2c415af97e706d02cc9533540f0c931616f988ed03e0f18e9fe14fa9423f1 all runs: OK false negative chance: 0.000 # git bisect bad 617a814f14b8914271f7a70366d72c6196d17663 Bisecting: 401 revisions left to test after this (roughly 9 steps) [bacf9c3cbb18f7e3f67521516d881892f46bbcef] resource: make alloc_free_mem_region() works for iomem_resource determine whether the revision contains the guilty commit revision 280e36f0d5b997173d014c07484c03a7f7750668 crashed and is reachable testing commit bacf9c3cbb18f7e3f67521516d881892f46bbcef gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 240961973e0f9b0143a416b5748fa992daf9b7ce24062fc6ce50482b8578e333 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 corrupted 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 corrupted, types: [HANG] # git bisect good bacf9c3cbb18f7e3f67521516d881892f46bbcef Bisecting: 205 revisions left to test after this (roughly 8 steps) [509d2cd12a10d057fdf72f565b930f9a81140d59] Merge tag 'Smack-for-6.12' of https://github.com/cschaufler/smack-next determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit 509d2cd12a10d057fdf72f565b930f9a81140d59 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 8ddf2cbd9bc7a7c2a0b396e71aa6d285e453b573aea48b0e2257e0c2338bed65 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 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 corrupted 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 509d2cd12a10d057fdf72f565b930f9a81140d59 Bisecting: 111 revisions left to test after this (roughly 7 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 509d2cd12a10d057fdf72f565b930f9a81140d59 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: f0ca900ebdd4f97b506f809a3d6c1d85864e09601218f3437ed8443a048d918f all runs: OK false negative chance: 0.000 # git bisect bad 171754c3808214d4fd8843eab584599a429deb52 Bisecting: 46 revisions left to test after this (roughly 6 steps) [dae4320b29f0bbdae93f7c1f6f80b19f109ca0bc] sched: Fixup set_next_task() implementations determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit dae4320b29f0bbdae93f7c1f6f80b19f109ca0bc gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: e352ed7b43a09049117551fa9a5db2474dce4065cfbe961bb25554af8704de9b all runs: OK false negative chance: 0.000 # git bisect bad dae4320b29f0bbdae93f7c1f6f80b19f109ca0bc Bisecting: 23 revisions left to test after this (roughly 5 steps) [8e2e13ac6122915bd98315237b0317495e391be0] sched/fair: Cleanup pick_task_fair() vs throttle determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit 8e2e13ac6122915bd98315237b0317495e391be0 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 84d04fda8ef305641f72d77dd9d83cf05543b9b033e22e13692a1a91ba768766 all runs: OK false negative chance: 0.000 # git bisect bad 8e2e13ac6122915bd98315237b0317495e391be0 Bisecting: 11 revisions left to test after this (roughly 4 steps) [d741f297bceaf52aa1b97b997708fc0cd853c73e] sched/fair: Fair server interface determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit d741f297bceaf52aa1b97b997708fc0cd853c73e gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 9178d2990b04d86f68c476c312daef921cf839ad817b25a3ece75866a3c58161 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 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 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 d741f297bceaf52aa1b97b997708fc0cd853c73e Bisecting: 5 revisions left to test after this (roughly 3 steps) [4ae0c2b91110dab6f4291c2c7f99dde60ecc97d8] sched/debug: Fix fair_server_period_max value determine whether the revision contains the guilty commit revision d741f297bceaf52aa1b97b997708fc0cd853c73e crashed and is reachable testing commit 4ae0c2b91110dab6f4291c2c7f99dde60ecc97d8 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: b4a542be76cfb046465b512a1650a95a1e241c7cdbb380f5b65b53f88dd75e43 all runs: OK false negative chance: 0.000 # git bisect bad 4ae0c2b91110dab6f4291c2c7f99dde60ecc97d8 Bisecting: 2 revisions left to test after this (roughly 2 steps) [5f6bd380c7bdbe10f7b4e8ddcceed60ce0714c6d] sched/rt: Remove default bandwidth control determine whether the revision contains the guilty commit revision d741f297bceaf52aa1b97b997708fc0cd853c73e 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: 2bfc7af536903d7364b5919e510459130268f75e02d7eafd40a4811c3612d8b5 all runs: OK false negative chance: 0.000 # git bisect bad 5f6bd380c7bdbe10f7b4e8ddcceed60ce0714c6d Bisecting: 0 revisions left to test after this (roughly 1 step) [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: edf893f33f62770b868a139e3519484b821d9b176f2af91de113dfc00c2dd4c3 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 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 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: 2bfc7af536903d7364b5919e510459130268f75e02d7eafd40a4811c3612d8b5 parent signature: edf893f33f62770b868a139e3519484b821d9b176f2af91de113dfc00c2dd4c3 revisions tested: 27, total time: 7h11m33.235357387s (build: 2h14m12.321493487s, test: 4h34m25.984614232s) 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): []