ci2 starts bisection 2025-05-17 09:54:07.874944563 +0000 UTC m=+45427.964373764 bisecting cause commit starting from 3c21441eeffc3fd7eb990ae2fe99333484b1f7f2 building syzkaller on f41472b03ad1c28c33fa0dcb999ded4c60d1247d ensuring issue is reproducible on original commit 3c21441eeffc3fd7eb990ae2fe99333484b1f7f2 testing commit 3c21441eeffc3fd7eb990ae2fe99333484b1f7f2 gcc compiler: Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2 kernel signature: c5e4969d713fbc4a2c97c1ef6dd0d0aa86fcf22571e665943cfc0f9a227f1b98 all runs: crashed: INFO: task hung in freeze_super representative crash: INFO: task hung in freeze_super, types: [HANG] check whether we can drop unnecessary instrumentation disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit 3c21441eeffc3fd7eb990ae2fe99333484b1f7f2 gcc compiler: Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2 kernel signature: 82dc24bc3bcf8ec66034e844cfff2740ec564fcbf2cfb85ffbbd9879aef1dcc2 all runs: crashed: INFO: task hung in freeze_super representative crash: INFO: task hung in freeze_super, types: [HANG] the bug reproduces without the instrumentation disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed kconfig minimization: base=4080 full=8322 leaves diff=2130 split chunks (needed=false): <2130> split chunk #0 of len 2130 into 5 parts testing without sub-chunk 1/5 disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP LEAK UBSAN BUG], they are not needed testing commit 3c21441eeffc3fd7eb990ae2fe99333484b1f7f2 gcc compiler: Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2 kernel signature: 95fe01282a6ed5b16e48032d69578ab13060a30cdb029c70d1f1e4c9c0341846 all runs: crashed: INFO: task hung in freeze_super representative crash: INFO: task hung in freeze_super, types: [HANG] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [ATOMIC_SLEEP LEAK UBSAN BUG KASAN LOCKDEP], they are not needed testing commit 3c21441eeffc3fd7eb990ae2fe99333484b1f7f2 gcc compiler: Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2 failed building 3c21441eeffc3fd7eb990ae2fe99333484b1f7f2: ld.lld: error: undefined symbol: devm_drm_of_get_bridge testing without sub-chunk 3/5 disabling configs for [UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP LEAK], they are not needed testing commit 3c21441eeffc3fd7eb990ae2fe99333484b1f7f2 gcc compiler: Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2 kernel signature: 82c4ea70aa29e03807c9efe4e1dc65e8802bca7a79e8025643e034d84c3d2680 all runs: crashed: INFO: task hung in freeze_super representative crash: INFO: task hung in freeze_super, types: [HANG] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [ATOMIC_SLEEP LEAK UBSAN BUG KASAN LOCKDEP], they are not needed testing commit 3c21441eeffc3fd7eb990ae2fe99333484b1f7f2 gcc compiler: Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2 kernel signature: b481f738f8bdc5890099d2c6866a9eb3c03130c1e3983d91464dd0a3c94c4835 all runs: 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 5/5 disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit 3c21441eeffc3fd7eb990ae2fe99333484b1f7f2 gcc compiler: Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2 kernel signature: a65eaad5ae4c2794bbdeb00be3d4c57607fd9082fb04e3a0a01a02782aafea96 all runs: crashed: INFO: rcu detected stall in corrupted representative crash: INFO: rcu detected stall in corrupted, types: [HANG] the chunk can be dropped minimized to 426 configs; suspects: [6LOWPAN ARCH_ENABLE_MEMORY_HOTREMOVE ASUS_WMI CHARGER_BQ24190 CMA COMMON_CLK DAX DLM DRM DRM_BRIDGE 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_GEM_SHMEM_HELPER DRM_GM12U320 DRM_GUD DRM_I915 DRM_I915_CAPTURE_ERROR DRM_I915_COMPRESS_ERROR DRM_I915_USERPTR DRM_KMS_HELPER DRM_MIPI_DSI DRM_PANEL DRM_PANEL_BRIDGE DRM_PANEL_EDP DRM_PANEL_ORIENTATION_QUIRKS DRM_SIMPLEDRM DRM_TTM DRM_TTM_HELPER DRM_UDL DRM_VGEM DRM_VIRTIO_GPU DRM_VIRTIO_GPU_KMS DRM_VKMS DRM_VMWGFX DUMMY DVB_AF9013 DVB_AF9033 DVB_AS102 DVB_AS102_FE DVB_B2C2_FLEXCOP DVB_B2C2_FLEXCOP_USB DVB_CORE DVB_DIB3000MB DVB_DIB3000MC DVB_EC100 DVB_GP8PSK_FE DVB_RTL2830 DVB_RTL2832 DVB_RTL2832_SDR DVB_TEST_DRIVERS DVB_TTUSB_BUDGET DVB_TTUSB_DEC DVB_USB DVB_USB_A800 DVB_USB_AF9005 DVB_USB_AF9005_REMOTE DVB_USB_AF9015 DVB_USB_AF9035 DVB_USB_ANYSEE DVB_USB_AU6610 DVB_USB_AZ6007 DVB_USB_AZ6027 DVB_USB_CE6230 DVB_USB_CINERGY_T2 DVB_USB_CXUSB DVB_USB_CXUSB_ANALOG DVB_USB_DIB0700 DVB_USB_DIB3000MC DVB_USB_DIBUSB_MB DVB_USB_DIBUSB_MC DVB_USB_DIGITV DVB_USB_DTT200U DVB_USB_DTV5100 DVB_USB_DVBSKY DVB_USB_DW2102 DVB_USB_EC168 DVB_USB_GL861 DVB_USB_GP8PSK DVB_USB_LME2510 DVB_USB_M920X DVB_USB_MXL111SF DVB_USB_NOVA_T_USB2 DVB_USB_OPERA1 DVB_USB_PCTV452E DVB_USB_RTL28XXU DVB_USB_TECHNISAT_USB2 DVB_USB_TTUSB2 DVB_USB_UMT_010 DVB_USB_V2 DVB_USB_VP702X DVB_USB_VP7045 DVB_USB_ZD1301 DVB_VIDTV DVB_ZL10353 ECRYPT_FS ECRYPT_FS_MESSAGING EDAC EFS_FS ENCRYPTED_KEYS EQUALIZER EROFS_FS EROFS_FS_POSIX_ACL EROFS_FS_SECURITY EROFS_FS_XATTR EROFS_FS_ZIP EVM EVM_ADD_XATTRS EVM_ATTR_FSUUID EVM_EXTRA_SMACK_XATTRS EXFAT_FS EXPORTFS_BLOCK_OPS EXT3_FS EXT3_FS_POSIX_ACL EXT3_FS_SECURITY EXTCON EXTCON_INTEL_CHT_WC EXTCON_PTN5150 EXTCON_USBC_TUSB320 F2FS_CHECK_FS F2FS_FAULT_INJECTION F2FS_FS F2FS_FS_COMPRESSION F2FS_FS_LZ4 F2FS_FS_LZ4HC F2FS_FS_LZO F2FS_FS_LZORLE F2FS_FS_POSIX_ACL F2FS_FS_SECURITY F2FS_FS_XATTR F2FS_FS_ZSTD F2FS_STAT_FS FANOTIFY FANOTIFY_ACCESS_PERMISSIONS FB FB_CFB_COPYAREA FB_CFB_FILLRECT FB_CFB_IMAGEBLIT FB_CORE FB_DEFERRED_IO FB_DEVICE FB_IOMEM_FOPS FB_IOMEM_HELPERS FB_NOTIFY FB_SYSMEM_FOPS FB_SYSMEM_HELPERS FB_SYSMEM_HELPERS_DEFERRED FB_SYS_COPYAREA FB_SYS_FILLRECT FB_SYS_IMAGEBLIT FB_TILEBLITTING FB_VESA FB_VGA16 FB_VIRTUAL FDDI FIREWIRE FIREWIRE_NET FIREWIRE_OHCI FIREWIRE_SBP2 FONT_8x16 FONT_8x8 FONT_SUPPORT FRAMEBUFFER_CONSOLE FRAMEBUFFER_CONSOLE_DETECT_PRIMARY FRAMEBUFFER_CONSOLE_ROTATION FS_DAX FS_DAX_PMD FS_ENCRYPTION FS_ENCRYPTION_ALGS FS_STACK FS_VERITY FS_VERITY_BUILTIN_SIGNATURES FTL FUSE_DAX FUSE_FS FW_LOADER_COMPRESS FW_LOADER_PAGED_BUF FW_LOADER_SYSFS FW_LOADER_USER_HELPER FW_LOADER_USER_HELPER_FALLBACK GACT_PROB GARP GENDWARFKSYMS GENERIC_PHY GET_FREE_REGION GFS2_FS GFS2_FS_LOCKING_DLM GNSS GNSS_USB GOOGLE_COREBOOT_TABLE GOOGLE_FIRMWARE GOOGLE_MEMCONSOLE GOOGLE_MEMCONSOLE_COREBOOT GOOGLE_VPD GPIOLIB GPIOLIB_IRQCHIP GPIO_ACPI GPIO_DLN2 GPIO_LJCA GPIO_VIPERBOARD GREENASIA_FF GREYBUS GREYBUS_BRIDGED_PHY GREYBUS_ES2 GREYBUS_HID GREYBUS_USB GTP GUEST_PERF_EVENTS GVE HAS_LTO_CLANG HAVE_ARCH_NODE_DEV_GROUP HAVE_ARCH_USERFAULTFD_MINOR HAVE_ARCH_USERFAULTFD_WP HAVE_BOOTMEM_INFO_NODE HAVE_CLK_PREPARE HAVE_KVM_CPU_RELAX_INTERCEPT HAVE_KVM_DIRTY_RING HAVE_KVM_DIRTY_RING_ACQ_REL HAVE_KVM_DIRTY_RING_TSO HAVE_KVM_IRQCHIP HAVE_KVM_IRQ_BYPASS HAVE_KVM_IRQ_ROUTING HAVE_KVM_MSI HAVE_KVM_NO_POLL HAVE_KVM_PFNCACHE HAVE_KVM_PM_NOTIFIER HAVE_KVM_READONLY_MEM HAVE_SCHED_AVG_IRQ HDLC HDLC_CISCO HDLC_FR HDLC_PPP HDLC_RAW HDLC_RAW_ETH HDLC_X25 HDMI HFSPLUS_FS HFS_FS HID_ACCUTOUCH HID_ACRUX HID_ACRUX_FF HID_ALPS HID_APPLEIR HID_ASUS HID_AUREAL HID_BATTERY_STRENGTH HID_BETOP_FF HID_BIGBEN_FF HID_CMEDIA HID_CORSAIR HID_COUGAR HID_CP2112 HID_CREATIVE_SB0540 HID_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_NTI HID_ORTEK HID_PENMOUNT HID_PICOLCD HID_PICOLCD_BACKLIGHT HID_PICOLCD_CIR HID_PICOLCD_FB HID_PICOLCD_LCD HID_PICOLCD_LEDS HID_PLANTRONICS HID_PRIMAX HID_PRODIKEYS HID_PXRC HID_RAZER HID_RETRODE HID_RMI HID_ROCCAT HID_SAITEK HID_SEMITEK HID_SENSOR_ACCEL_3D HID_SENSOR_ALS HID_SENSOR_CUSTOM_INTEL_HINGE HID_SENSOR_CUSTOM_SENSOR HID_SENSOR_DEVICE_ROTATION HID_SENSOR_GYRO_3D HID_SENSOR_HUB HID_SENSOR_HUMIDITY HID_SENSOR_IIO_COMMON HID_SENSOR_IIO_TRIGGER HID_SENSOR_INCLINOMETER_3D HID_SENSOR_MAGNETOMETER_3D HID_SENSOR_PRESS HID_SENSOR_PROX HID_SENSOR_TEMP HID_SIGMAMICRO HID_SPEEDLINK HID_STEELSERIES HID_THINGM HID_TIVO HID_TOPRE HID_TWINHAN HID_U2FZERO HID_UCLOGIC HID_UDRAW_PS3 HID_VIEWSONIC HID_VIVALDI HID_VIVALDI_COMMON HID_VRC2 HID_WACOM HID_WALTOP HID_WIIMOTE HID_XIAOMI HID_XINMO HID_ZYDACRON HMM_MIRROR HOLTEK_FF HOTPLUG_PCI_PCIE HPET_MMAP HPET_MMAP_DEFAULT HPFS_FS 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 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_CHTWC_INT33FE INTEL_IDMA64 INTEL_IOATDMA INTEL_IOMMU_DEFAULT_ON INTEL_IOMMU_SVM INTEL_ISHTP_ECLITE INTEL_ISH_FIRMWARE_DOWNLOADER INTEL_ISH_HID INTEL_SOC_PMIC_CHTWC INTERVAL_TREE_SPAN_ITER IOMMUFD IOMMUFD_DRIVER IOMMUFD_DRIVER_CORE IOMMUFD_TEST IO_URING_ZCRX 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_FIB_TRIE_STATS IP_MROUTE_MULTIPLE_TABLES IP_NF_ARPFILTER IP_NF_ARPTABLES IP_NF_ARP_MANGLE IP_NF_MATCH_AH IP_NF_MATCH_ECN IP_NF_MATCH_RPFILTER IP_NF_MATCH_TTL IP_NF_RAW IP_NF_SECURITY IP_NF_TARGET_ECN IP_NF_TARGET_NETMAP IP_NF_TARGET_REDIRECT IP_NF_TARGET_SYNPROXY IP_NF_TARGET_TTL IP_ROUTE_CLASSID IP_SCTP IP_SET IP_SET_BITMAP_IP IP_SET_BITMAP_IPMAC IP_SET_BITMAP_PORT IP_SET_HASH_IP IP_SET_HASH_IPMAC IP_SET_HASH_IPMARK IP_SET_HASH_IPPORT IP_SET_HASH_IPPORTIP IP_SET_HASH_IPPORTNET IP_SET_HASH_MAC IP_SET_HASH_NET IP_SET_HASH_NETIFACE IRQ_TIME_ACCOUNTING LAPB LCD_CLASS_DEVICE LEDS_CLASS_MULTICOLOR 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 MODVERSIONS MPTCP MTD NETFILTER_ADVANCED NET_ACT_GACT NET_ACT_MIRRED NET_IPGRE_DEMUX NFT_COMPAT NFT_COMPAT_ARP NFT_FWD_NETDEV NF_TABLES NF_TABLES_ARP NF_TABLES_NETDEV PAGE_POOL RADIO_ADAPTERS RADIO_SI4713 RAS RC_CORE REGULATOR RFKILL SND SOUND STAGING TRANSPARENT_HUGEPAGE TYPEC TYPEC_MUX_PI3USB30532 USB_LJCA USB_ROLES_INTEL_XHCI USB_ROLE_SWITCH VIDEO_DEV VIRTIO_FS WAN ZONE_DEVICE] disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed picked [v6.14 v6.13 v6.12 v6.10 v6.8 v6.6 v6.4 v6.2 v5.19 v5.16 v5.13 v5.10 v5.7 v5.4 v5.1 v4.19] out of 37 release tags testing release v6.14 testing commit 38fec10eb60d687e30c8c6b5420d86e8149f7557 gcc compiler: Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2 kernel signature: 0bdab7a86d00361e87521027ecf1d2e83bbff8a0c5d9d1d6988766ab2d1432de all runs: crashed: BUG: soft lockup in gc_thread_func representative crash: BUG: soft lockup in gc_thread_func, types: [HANG] testing release v6.13 testing commit ffd294d346d185b70e28b1a28abe367bbfe53c04 gcc compiler: Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2 kernel signature: ca6a75d6e3298fbc0d2e626a3f830e1c8b720061eef199aa1de19ddde17588c0 run #0: crashed: INFO: rcu detected stall in corrupted run #1: crashed: INFO: task hung in freeze_super run #2: crashed: INFO: task hung in synchronize_rcu run #3: crashed: BUG: soft lockup in gc_thread_func run #4: crashed: BUG: soft lockup in gc_thread_func run #5: crashed: BUG: soft lockup in gc_thread_func run #6: crashed: BUG: soft lockup in gc_thread_func run #7: crashed: BUG: soft lockup in gc_thread_func run #8: crashed: BUG: soft lockup in gc_thread_func run #9: crashed: BUG: soft lockup in gc_thread_func representative crash: INFO: rcu detected stall in corrupted, types: [HANG] testing release v6.12 testing commit adc218676eef25575469234709c2d87185ca223a gcc compiler: Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2 kernel signature: e5df74e901cf513924bc5872e9f7663ebda10a41ffd068d70f885b4b582bf866 all runs: OK false negative chance: 0.000 # git bisect start ffd294d346d185b70e28b1a28abe367bbfe53c04 adc218676eef25575469234709c2d87185ca223a Bisecting: 6418 revisions left to test after this (roughly 13 steps) [28eb75e178d389d325f1666e422bc13bbbb9804c] Merge tag 'drm-next-2024-11-21' of https://gitlab.freedesktop.org/drm/kernel testing commit 28eb75e178d389d325f1666e422bc13bbbb9804c gcc compiler: Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2 kernel signature: 2fbb7df786e75ae4fe9d17b22e959e7b8427e55dfe13dd4575fdca96b6b71611 all runs: OK false negative chance: 0.000 # git bisect good 28eb75e178d389d325f1666e422bc13bbbb9804c Bisecting: 3250 revisions left to test after this (roughly 12 steps) [e33a6d83e1786d5e310ae746c67f5f4e2f93ba35] Merge tag 'usb-6.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb testing commit e33a6d83e1786d5e310ae746c67f5f4e2f93ba35 gcc compiler: Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2 kernel signature: c992aec7bdf64a7c2110fd43b1f7a78fc00c6eb5d82d5135c6bdf80de89660c1 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: BUG: soft lockup in gc_thread_func run #5: crashed: BUG: soft lockup in gc_thread_func run #6: crashed: BUG: soft lockup in gc_thread_func run #7: crashed: BUG: soft lockup in gc_thread_func run #8: crashed: BUG: soft lockup in gc_thread_func run #9: crashed: BUG: workqueue lockup representative crash: INFO: rcu detected stall in corrupted, types: [HANG] # git bisect bad e33a6d83e1786d5e310ae746c67f5f4e2f93ba35 Bisecting: 1610 revisions left to test after this (roughly 11 steps) [70dbb12e95ec7585c68cb3ceae971688915021e3] Merge tag 'i2c-for-6.13-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux testing commit 70dbb12e95ec7585c68cb3ceae971688915021e3 gcc compiler: Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2 kernel signature: e7c29285a96110c3bf52eef4c483ae7b364d24ffc855528827422f866e127905 all runs: OK false negative chance: 0.000 # git bisect good 70dbb12e95ec7585c68cb3ceae971688915021e3 Bisecting: 838 revisions left to test after this (roughly 10 steps) [1dc707e647bc919834eff9636c8d00b78c782545] rust: fix up formatting after merge testing commit 1dc707e647bc919834eff9636c8d00b78c782545 gcc compiler: Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2 kernel signature: e8eb1901fb5a7611709d96456f8f020cebe16dfc5480caf34267199c764c9402 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: BUG: soft lockup in gc_thread_func run #4: crashed: BUG: soft lockup in gc_thread_func run #5: crashed: BUG: soft lockup in gc_thread_func run #6: crashed: BUG: soft lockup in gc_thread_func run #7: crashed: BUG: soft lockup in gc_thread_func run #8: crashed: INFO: task hung in __lru_add_drain_all run #9: crashed: INFO: task hung in __lru_add_drain_all representative crash: INFO: rcu detected stall in corrupted, types: [HANG] # git bisect bad 1dc707e647bc919834eff9636c8d00b78c782545 Bisecting: 416 revisions left to test after this (roughly 9 steps) [44b4d13b70f682a86fee356786cc3e17987fae4d] Merge tag 'f2fs-for-6.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs testing commit 44b4d13b70f682a86fee356786cc3e17987fae4d gcc compiler: Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2 kernel signature: 10081d321caff73994f2e9d41f20b6112360ed4c4d3dc27fd910de2083ca7c8e run #0: crashed: INFO: rcu detected stall in corrupted run #1: crashed: BUG: soft lockup in gc_thread_func run #2: crashed: BUG: soft lockup in gc_thread_func run #3: crashed: INFO: task hung in freeze_super run #4: crashed: BUG: soft lockup in gc_thread_func run #5: crashed: BUG: soft lockup in gc_thread_func run #6: crashed: BUG: soft lockup in gc_thread_func run #7: crashed: BUG: soft lockup in gc_thread_func run #8: crashed: BUG: soft lockup in gc_thread_func run #9: crashed: BUG: soft lockup in gc_thread_func representative crash: INFO: rcu detected stall in corrupted, types: [HANG] # git bisect bad 44b4d13b70f682a86fee356786cc3e17987fae4d Bisecting: 219 revisions left to test after this (roughly 8 steps) [222974c6ec9d901f7ad13bbe6e505ec1f1d822d4] iommu: remove stale declaration left over by a merge conflict testing commit 222974c6ec9d901f7ad13bbe6e505ec1f1d822d4 gcc compiler: Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2 kernel signature: 79d6afbda248503c75c392b5d29d09aa4c072da06ce3f4cb44daaac0818e29de all runs: OK false negative chance: 0.000 # git bisect good 222974c6ec9d901f7ad13bbe6e505ec1f1d822d4 Bisecting: 113 revisions left to test after this (roughly 7 steps) [0637a68b9c6c1dfffcc1fca003cb7cd3257c3c03] Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi testing commit 0637a68b9c6c1dfffcc1fca003cb7cd3257c3c03 gcc compiler: Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2 kernel signature: 5ef4c2ab53e066f0e6a5f20b918abeb8b46786d6188a473954fdd314125526d3 all runs: OK false negative chance: 0.000 # git bisect good 0637a68b9c6c1dfffcc1fca003cb7cd3257c3c03 Bisecting: 71 revisions left to test after this (roughly 6 steps) [ff2a7a064a69069554564f52b6a84fc8a8c7d688] Merge tag 'gfs2-for-6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2 testing commit ff2a7a064a69069554564f52b6a84fc8a8c7d688 gcc compiler: Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2 kernel signature: 6f45725b276d9e27310c3bf679208e507d93786f470d5ba363f9671782b6aabe all runs: OK false negative chance: 0.000 # git bisect good ff2a7a064a69069554564f52b6a84fc8a8c7d688 Bisecting: 35 revisions left to test after this (roughly 5 steps) [f88c7904b5c7e35ab8037e2a59e10d80adf6fd7e] f2fs: clear SBI_POR_DOING before initing inmem curseg testing commit f88c7904b5c7e35ab8037e2a59e10d80adf6fd7e gcc compiler: Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2 kernel signature: b7caf0111115d8001937f266d5042e960c122b99f2f1651bc4b7deab3091aef6 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: BUG: soft lockup in gc_thread_func run #4: crashed: BUG: soft lockup in gc_thread_func run #5: crashed: BUG: soft lockup in gc_thread_func run #6: crashed: BUG: soft lockup in gc_thread_func run #7: crashed: BUG: soft lockup in gc_thread_func run #8: crashed: BUG: soft lockup in gc_thread_func run #9: crashed: BUG: soft lockup in gc_thread_func representative crash: INFO: rcu detected stall in corrupted, types: [HANG] # git bisect bad f88c7904b5c7e35ab8037e2a59e10d80adf6fd7e Bisecting: 17 revisions left to test after this (roughly 4 steps) [9395fb09e897dcd96f601715e63018fc5c69cf03] f2fs: fix to parse temperature correctly in f2fs_get_segment_temp() testing commit 9395fb09e897dcd96f601715e63018fc5c69cf03 gcc compiler: Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2 kernel signature: 51d3541f7b3990cb807ac176c25bcb701e26f2c7e14e1674340bcd5f1992e99d all runs: crashed: BUG: soft lockup in gc_thread_func representative crash: BUG: soft lockup in gc_thread_func, types: [HANG] # git bisect bad 9395fb09e897dcd96f601715e63018fc5c69cf03 Bisecting: 8 revisions left to test after this (roughly 3 steps) [fa08972bcb7baaf5f1f4fdf251dc08bdd3ab1cf0] f2fs: decrease spare area for pinned files for zoned devices testing commit fa08972bcb7baaf5f1f4fdf251dc08bdd3ab1cf0 gcc compiler: Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2 kernel signature: 4b242fd6805af4728be10528296491ff58014227ff1d93523fbf532452792bd1 all runs: OK false negative chance: 0.000 # git bisect good fa08972bcb7baaf5f1f4fdf251dc08bdd3ab1cf0 Bisecting: 4 revisions left to test after this (roughly 2 steps) [43563069e1c1df417d2eed6eca8a22fc6b04691d] f2fs: check curseg->inited before write_sum_page in change_curseg testing commit 43563069e1c1df417d2eed6eca8a22fc6b04691d gcc compiler: Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2 kernel signature: abec1b5afedb22f407fb38ffdf6cdccc4b48685c7e390f9a0e8f2f474800de27 all runs: OK false negative chance: 0.000 # git bisect good 43563069e1c1df417d2eed6eca8a22fc6b04691d Bisecting: 2 revisions left to test after this (roughly 1 step) [e63ce120b41ac5a904758a0231d43c6b328cd8fa] f2fs: fix typos testing commit e63ce120b41ac5a904758a0231d43c6b328cd8fa gcc compiler: Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2 kernel signature: 4d88788c54ee22bf50aa35333ea176a3d2a09a0dfa2fb1be7e96afc603efc596 run #0: crashed: INFO: rcu detected stall in corrupted run #1: crashed: INFO: rcu detected stall in corrupted run #2: crashed: BUG: soft lockup in gc_thread_func run #3: crashed: BUG: soft lockup in gc_thread_func run #4: crashed: BUG: soft lockup in gc_thread_func run #5: crashed: BUG: soft lockup in gc_thread_func run #6: crashed: BUG: soft lockup in gc_thread_func run #7: crashed: BUG: soft lockup in gc_thread_func run #8: crashed: BUG: soft lockup in gc_thread_func run #9: crashed: BUG: soft lockup in gc_thread_func representative crash: INFO: rcu detected stall in corrupted, types: [HANG] # git bisect bad e63ce120b41ac5a904758a0231d43c6b328cd8fa Bisecting: 0 revisions left to test after this (roughly 0 steps) [84b5bb8bf0f6a78c232a20c2eecdbb8112ac2703] f2fs: modify f2fs_is_checkpoint_ready logic to allow more data to be written with the CP disable testing commit 84b5bb8bf0f6a78c232a20c2eecdbb8112ac2703 gcc compiler: Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2 kernel signature: 92dc8814adcc1128fb373e0dca4cc946a6b5aa73f3b5a72df100b5151f020463 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: BUG: soft lockup in gc_thread_func run #6: crashed: BUG: soft lockup in gc_thread_func run #7: crashed: BUG: soft lockup in gc_thread_func run #8: crashed: BUG: soft lockup in gc_thread_func run #9: crashed: INFO: task hung in __lru_add_drain_all representative crash: INFO: rcu detected stall in corrupted, types: [HANG] # git bisect bad 84b5bb8bf0f6a78c232a20c2eecdbb8112ac2703 84b5bb8bf0f6a78c232a20c2eecdbb8112ac2703 is the first bad commit commit 84b5bb8bf0f6a78c232a20c2eecdbb8112ac2703 Author: Qi Han Date: Fri Oct 25 03:18:23 2024 -0600 f2fs: modify f2fs_is_checkpoint_ready logic to allow more data to be written with the CP disable When the free segment is used up during CP disable, many write or ioctl operations will get ENOSPC error codes, even if there are still many blocks available. We can reproduce it in the following steps: dd if=/dev/zero of=f2fs.img bs=1M count=65 mkfs.f2fs -f f2fs.img mount f2fs.img f2fs_dir -o checkpoint=disable:10% cd f2fs_dir i=1 ; while [[ $i -lt 50 ]] ; do (file_name=./2M_file$i ; dd \ if=/dev/random of=$file_name bs=1M count=2); i=$((i+1)); done sync i=1 ; while [[ $i -lt 50 ]] ; do (file_name=./2M_file$i ; truncate \ -s 1K $file_name); i=$((i+1)); done sync dd if=/dev/zero of=./file bs=1M count=20 In f2fs_need_SSR() function, it is allowed to use SSR to allocate blocks when CP is disabled, so in f2fs_is_checkpoint_ready function, can we judge the number of invalid blocks when free segment is not enough, and return ENOSPC only if the number of invalid blocks is also not enough. Signed-off-by: Qi Han Reviewed-by: Chao Yu Signed-off-by: Jaegeuk Kim fs/f2fs/segment.h | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) accumulated error probability: 0.00 culprit signature: 92dc8814adcc1128fb373e0dca4cc946a6b5aa73f3b5a72df100b5151f020463 parent signature: abec1b5afedb22f407fb38ffdf6cdccc4b48685c7e390f9a0e8f2f474800de27 revisions tested: 23, total time: 5h58m42.793564826s (build: 2h13m51.345913465s, test: 3h27m53.900395029s) first bad commit: 84b5bb8bf0f6a78c232a20c2eecdbb8112ac2703 f2fs: modify f2fs_is_checkpoint_ready logic to allow more data to be written with the CP disable recipients (to): ["chao@kernel.org" "hanqi@vivo.com" "jaegeuk@kernel.org"] recipients (cc): [] crash: INFO: rcu detected stall in corrupted rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: (detected by 1, t=10002 jiffies, g=6137, q=87 ncpus=2) rcu: All QSes seen, last rcu_preempt kthread activity 10003 (4294955095-4294945092), jiffies_till_next_fqs=1, root ->qsmask 0x0 rcu: rcu_preempt kthread starved for 10004 jiffies! g6137 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 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:14144 pid:16 tgid:16 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5322 [inline] __schedule+0x6a9/0xa70 kernel/sched/core.c:6682 __schedule_loop kernel/sched/core.c:6759 [inline] schedule+0xac/0x140 kernel/sched/core.c:6774 schedule_timeout+0x116/0x190 kernel/time/timer.c:2615 rcu_gp_fqs_loop+0x188/0x580 kernel/rcu/tree.c:2045 rcu_gp_kthread+0x1c/0x110 kernel/rcu/tree.c:2247 kthread+0xe9/0x100 kernel/kthread.c:389 ret_from_fork+0x32/0x40 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 rcu: Stack dump where RCU GP kthread last ran: CPU: 1 UID: 0 PID: 5054 Comm: f2fs_gc-7:6 Not tainted 6.12.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:increase_sleep_time fs/f2fs/gc.h:152 [inline] RIP: 0010:gc_thread_func+0x1f0/0x7e0 fs/f2fs/gc.c:70 Code: 85 ea 05 00 00 48 8b 03 66 83 b8 30 03 00 00 00 74 27 45 3b 6e 64 0f 84 97 fe ff ff 41 8b 46 5c 41 8b 4e 60 44 89 ea 48 01 c2 <41> 01 c5 48 39 ca 44 0f 47 e9 e9 7a fe ff ff 44 89 6c 24 04 48 8b RSP: 0018:ffffc900028f3e58 EFLAGS: 00000206 RAX: 0000000000007530 RBX: ffff8881063d0000 RCX: 000000000000ea60 RDX: 0000000000015f90 RSI: ffffffff83274cd6 RDI: 000000000000ea69 RBP: ffff88810c79c2b0 R08: 0000000000000000 R09: 000000000000056a R10: 0000000000000000 R11: 0000000000005800 R12: 0000000000001701 R13: 000000000000ea60 R14: ffff88810c79c200 R15: 0000000000007530 FS: 0000000000000000(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f0467de5f98 CR3: 000000010333c000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: kthread+0xe9/0x100 kernel/kthread.c:389 ret_from_fork+0x32/0x40 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244