ci2 starts bisection 2025-03-06 10:10:58.454329491 +0000 UTC m=+43935.543495172 bisecting cause commit starting from bb2281fb05e50108ce95c43ab7e701ee564565c8 building syzkaller on 831e3629115be4f5e68e6e0df3a5b07eed26daa4 ensuring issue is reproducible on original commit bb2281fb05e50108ce95c43ab7e701ee564565c8 testing commit bb2281fb05e50108ce95c43ab7e701ee564565c8 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 2cf0da006b421c8f8dbc09bea7212b4dac74e1a787e577c527e0ced6b9dc66ce all runs: crashed: INFO: task hung in vfs_unlink representative crash: INFO: task hung in vfs_unlink, 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 bb2281fb05e50108ce95c43ab7e701ee564565c8 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d8612f35dfcd6b04d776d066e140c4e0cea29a340a6fc98592f1687424debd41 all runs: crashed: INFO: task hung in vfs_unlink representative crash: INFO: task hung in vfs_unlink, types: [HANG] the bug reproduces without the instrumentation disabling configs for [ATOMIC_SLEEP LEAK UBSAN BUG KASAN LOCKDEP], they are not needed kconfig minimization: base=4054 full=8254 leaves diff=2116 split chunks (needed=false): <2116> split chunk #0 of len 2116 into 5 parts testing without sub-chunk 1/5 disabling configs for [BUG KASAN LOCKDEP ATOMIC_SLEEP LEAK UBSAN], they are not needed testing commit bb2281fb05e50108ce95c43ab7e701ee564565c8 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 948b0e7c7a9efcc36ad500d32856518d7337d6796f203a26a6868601864bd445 all runs: crashed: INFO: task hung in vfs_unlink representative crash: INFO: task hung in vfs_unlink, 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 bb2281fb05e50108ce95c43ab7e701ee564565c8 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 failed building bb2281fb05e50108ce95c43ab7e701ee564565c8: drivers/gpu/drm/bridge/aux-bridge.c:116: undefined reference to `devm_drm_of_get_bridge' testing without sub-chunk 3/5 disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit bb2281fb05e50108ce95c43ab7e701ee564565c8 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 1da96bc67ff6bbb7a2c7947d99884b4b8129876a8c67e5e49fff01104a1056c3 all runs: crashed: INFO: task hung in vfs_unlink representative crash: INFO: task hung in vfs_unlink, types: [HANG] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit bb2281fb05e50108ce95c43ab7e701ee564565c8 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 03ea6fc7484f3e84bda9e2dd4e52b3b73581e80fccb1546ee71e8e0fb39c5825 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 [UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP LEAK], they are not needed testing commit bb2281fb05e50108ce95c43ab7e701ee564565c8 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 81599a16300f7f3a089d97a5cd268975b0b59105814d2f49feca376c025a557a 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 424 configs; suspects: [6LOWPAN ARCH_ENABLE_MEMORY_HOTREMOVE ASUS_WMI CHARGER_BQ24190 CMA COMMON_CLK DAX DLM DRM DRM_BRIDGE 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 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_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_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_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 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_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 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 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 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 [KASAN LOCKDEP ATOMIC_SLEEP LEAK UBSAN BUG], they are not needed picked [v6.13 v6.12 v6.11 v6.9 v6.7 v6.5 v6.3 v6.1 v5.18 v5.15 v5.12 v5.9 v5.6 v5.3 v5.0 v4.19] out of 36 release tags testing release v6.13 testing commit ffd294d346d185b70e28b1a28abe367bbfe53c04 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d9287261fe423230ea687e275c1980369acbbb5b81e38dcbda174bf5a5b0f27f all runs: crashed: INFO: rcu detected stall in corrupted representative crash: INFO: rcu detected stall in corrupted, types: [HANG] testing release v6.12 testing commit adc218676eef25575469234709c2d87185ca223a gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: acc2c4b8dfc1805e2d65a7278eedc2e36fe03ada380c86845f4bb6741bd42b1d all runs: crashed: INFO: rcu detected stall in corrupted representative crash: INFO: rcu detected stall in corrupted, types: [HANG] testing release v6.11 testing commit 98f7e32f20d28ec452afb208f9cffc08448a2652 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d170a958ad6554b5ab3c1147185cd3d923c1bd40cbd3261d64400572fb20e97a all runs: crashed: INFO: rcu detected stall in corrupted representative crash: INFO: rcu detected stall in corrupted, types: [HANG] testing release v6.9 testing commit a38297e3fb012ddfa7ce0321a7e5a8daeb1872b6 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ecc19e8432426dab5ba4deb463b8fc8000adf870d4ea62e59895489a22a9068b all runs: crashed: INFO: rcu detected stall in corrupted representative crash: INFO: rcu detected stall in corrupted, types: [HANG] testing release v6.7 testing commit 0dd3ee31125508cd67f7e7172247f05b7fd1753a gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 241f21f06b13a1700ed2eb33f852abcabe9fccd392a4de5d37dacc2d1cb371e0 all runs: OK false negative chance: 0.000 # git bisect start a38297e3fb012ddfa7ce0321a7e5a8daeb1872b6 0dd3ee31125508cd67f7e7172247f05b7fd1753a Bisecting: 15656 revisions left to test after this (roughly 14 steps) [06d179e31ce8651bd04822cd174cf342a21f30e9] Merge tag 'imx-dt64-6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into soc/dt testing commit 06d179e31ce8651bd04822cd174cf342a21f30e9 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 145572e5b5515058b5a3a91b3f343b0a89f31c3a637f64ef14490e83ba297b3f all runs: crashed: INFO: rcu detected stall in corrupted representative crash: INFO: rcu detected stall in corrupted, types: [HANG] # git bisect bad 06d179e31ce8651bd04822cd174cf342a21f30e9 Bisecting: 7025 revisions left to test after this (roughly 13 steps) [cf65598d5909acf5e7b7dc9e21786e386356bc81] Merge tag 'drm-next-2024-01-10' of git://anongit.freedesktop.org/drm/drm testing commit cf65598d5909acf5e7b7dc9e21786e386356bc81 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 26a98334323ba8f6d4f2f878617a0f5130f6659278e0ec17d014ad7c7e4e2d2e all runs: OK false negative chance: 0.000 # git bisect good cf65598d5909acf5e7b7dc9e21786e386356bc81 Bisecting: 3497 revisions left to test after this (roughly 12 steps) [ed8d84530ab0a3b7b370e8b28f12179314dcfcc3] Merge tag 'i2c-for-6.8-rc1-rebased' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux testing commit ed8d84530ab0a3b7b370e8b28f12179314dcfcc3 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 20d083b8d5299e91565caa9f28921a157d8db918c76b35ea25604a8838f1cc09 all runs: crashed: INFO: rcu detected stall in corrupted representative crash: INFO: rcu detected stall in corrupted, types: [HANG] # git bisect bad ed8d84530ab0a3b7b370e8b28f12179314dcfcc3 Bisecting: 1759 revisions left to test after this (roughly 11 steps) [2385018a4e5eb4f06cf110cca80d0a4ac8e27297] Merge tag 'mfd-next-6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd testing commit 2385018a4e5eb4f06cf110cca80d0a4ac8e27297 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ef111cae535d1846fa9c3c8cb3b35535958ad96da1c8f55ff45887515e12269a all runs: crashed: INFO: rcu detected stall in corrupted representative crash: INFO: rcu detected stall in corrupted, types: [HANG] # git bisect bad 2385018a4e5eb4f06cf110cca80d0a4ac8e27297 Bisecting: 992 revisions left to test after this (roughly 10 steps) [a3cc31e75185f9b1ad8dc45eac77f8de788dc410] Merge tag 'libnvdimm-for-6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm testing commit a3cc31e75185f9b1ad8dc45eac77f8de788dc410 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ec73d8ce6e1a63609a8981716db0263ff3c6d955fb2407bc308a3b482661ea5c all runs: OK false negative chance: 0.000 # git bisect good a3cc31e75185f9b1ad8dc45eac77f8de788dc410 Bisecting: 501 revisions left to test after this (roughly 9 steps) [c919330dd57835970b37676d377de3eaaea2c1e9] f2fs: fix double free of f2fs_sb_info testing commit c919330dd57835970b37676d377de3eaaea2c1e9 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 50d6861263c823710d8e859e5249f9de2c6a0f61a46599c90fdfaf3e8fb136a0 all runs: OK false negative chance: 0.000 # git bisect good c919330dd57835970b37676d377de3eaaea2c1e9 Bisecting: 297 revisions left to test after this (roughly 8 steps) [1c6d984f523f67ecfad1083bb04c55d91977bb15] x86/kvm: Do not try to disable kvmclock if it was not enabled testing commit 1c6d984f523f67ecfad1083bb04c55d91977bb15 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 60e37e4875e4280d3979432c308157fcb6bd08333f87914eac576bba2e70c99f all runs: OK false negative chance: 0.000 # git bisect good 1c6d984f523f67ecfad1083bb04c55d91977bb15 Bisecting: 153 revisions left to test after this (roughly 7 steps) [4331f070267ae8f76db1abbc7f4eeed4f06ae817] Merge tag 'riscv-for-linus-6.8-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux testing commit 4331f070267ae8f76db1abbc7f4eeed4f06ae817 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a3bece9edc5d46915601fd0a52088b6d6378dda0881b645f30c651c6b0c66a31 all runs: crashed: INFO: rcu detected stall in corrupted representative crash: INFO: rcu detected stall in corrupted, types: [HANG] # git bisect bad 4331f070267ae8f76db1abbc7f4eeed4f06ae817 Bisecting: 79 revisions left to test after this (roughly 6 steps) [0c6bc37255927cf2e2cfdd9dc9bd1eced9c166de] Merge tag 'ubifs-for-linus-6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/ubifs testing commit 0c6bc37255927cf2e2cfdd9dc9bd1eced9c166de gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 59cde8d627f31735fdebb86e3ee60fd97a54cdc87eb456e91b6e6403a2fbd18a all runs: crashed: INFO: rcu detected stall in corrupted representative crash: INFO: rcu detected stall in corrupted, types: [HANG] # git bisect bad 0c6bc37255927cf2e2cfdd9dc9bd1eced9c166de Bisecting: 34 revisions left to test after this (roughly 5 steps) [052d534373b7ed33712a63d5e17b2b6cdbce84fd] Merge tag 'exfat-for-6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/linkinjeon/exfat testing commit 052d534373b7ed33712a63d5e17b2b6cdbce84fd gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 83a81a5ac01cba2278d69e78ede2c915a979d9f0609c80f0466612510df11e66 all runs: crashed: INFO: rcu detected stall in corrupted representative crash: INFO: rcu detected stall in corrupted, types: [HANG] # git bisect bad 052d534373b7ed33712a63d5e17b2b6cdbce84fd Bisecting: 10 revisions left to test after this (roughly 4 steps) [7dfb03dd24d43b9e7a725e70d2e8a83bb29df294] Merge branches 'doc.2023.12.13a', 'torture.2023.11.23a', 'fixes.2023.12.13a', 'rcu-tasks.2023.12.12b' and 'srcu.2023.12.13a' into rcu-merge.2023.12.13a testing commit 7dfb03dd24d43b9e7a725e70d2e8a83bb29df294 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 5d427c07cb235c45fd982e258d6def51da89bed74f0be74f2d9a4284e3714971 all runs: OK false negative chance: 0.000 # git bisect good 7dfb03dd24d43b9e7a725e70d2e8a83bb29df294 Bisecting: 4 revisions left to test after this (roughly 3 steps) [f16ab99c2eba233bc97b9f9cc374f7a371fcc363] Merge tag 'pull-bcachefs-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs testing commit f16ab99c2eba233bc97b9f9cc374f7a371fcc363 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 33cd21a866c93c44b52bdb939db4401eea8c1ba909fe123b63fc762298484235 all runs: OK false negative chance: 0.000 # git bisect good f16ab99c2eba233bc97b9f9cc374f7a371fcc363 Bisecting: 2 revisions left to test after this (roughly 1 step) [34939ae005ec402ee183956114b1a74cb57b8b9d] exfat: using ffs instead of internal logic testing commit 34939ae005ec402ee183956114b1a74cb57b8b9d gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a0f7fba82cd6bff1ac82434d2c823a8d8d0757834d22e941db27c1d67bd59a05 all runs: OK false negative chance: 0.000 # git bisect good 34939ae005ec402ee183956114b1a74cb57b8b9d Bisecting: 0 revisions left to test after this (roughly 1 step) [f55c096f62f100aa9f5f48d86e1b6846ecbd67e7] exfat: do not zero the extended part testing commit f55c096f62f100aa9f5f48d86e1b6846ecbd67e7 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: cf65074f4ef4ee1784597932bd05e2114bb27f578e0dfabc44cad96a08eb2206 all runs: crashed: INFO: rcu detected stall in corrupted representative crash: INFO: rcu detected stall in corrupted, types: [HANG] # git bisect bad f55c096f62f100aa9f5f48d86e1b6846ecbd67e7 Bisecting: 0 revisions left to test after this (roughly 0 steps) [11a347fb6cef62ce47e84b97c45f2b2497c7593b] exfat: change to get file size from DataLength testing commit 11a347fb6cef62ce47e84b97c45f2b2497c7593b gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 4eb4711b31916bfd3bdb85691191b5a4f8d303d495f1059c4b1e5b63c81c0dfb all runs: OK false negative chance: 0.000 # git bisect good 11a347fb6cef62ce47e84b97c45f2b2497c7593b f55c096f62f100aa9f5f48d86e1b6846ecbd67e7 is the first bad commit commit f55c096f62f100aa9f5f48d86e1b6846ecbd67e7 Author: Yuezhang Mo Date: Tue May 30 17:35:00 2023 +0800 exfat: do not zero the extended part Since the read operation beyond the ValidDataLength returns zero, if we just extend the size of the file, we don't need to zero the extended part, but only change the DataLength without changing the ValidDataLength. Signed-off-by: Yuezhang Mo Reviewed-by: Andy Wu Reviewed-by: Aoyama Wataru Reviewed-by: Sungjong Seo Signed-off-by: Namjae Jeon fs/exfat/file.c | 77 +++++++++++++++++++++++++++++++++++++++++--------------- fs/exfat/inode.c | 14 ++++++++++- 2 files changed, 70 insertions(+), 21 deletions(-) accumulated error probability: 0.00 culprit signature: cf65074f4ef4ee1784597932bd05e2114bb27f578e0dfabc44cad96a08eb2206 parent signature: 4eb4711b31916bfd3bdb85691191b5a4f8d303d495f1059c4b1e5b63c81c0dfb revisions tested: 26, total time: 6h57m21.133547564s (build: 2h49m12.119910186s, test: 3h48m49.021123072s) first bad commit: f55c096f62f100aa9f5f48d86e1b6846ecbd67e7 exfat: do not zero the extended part recipients (to): ["andy.wu@sony.com" "linkinjeon@kernel.org" "sj1557.seo@samsung.com" "wataru.aoyama@sony.com" "yuezhang.mo@sony.com"] recipients (cc): [] crash: INFO: rcu detected stall in corrupted rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: (detected by 0, t=10002 jiffies, g=2873, q=102 ncpus=2) rcu: All QSes seen, last rcu_preempt kthread activity 10003 (4294954482-4294944479), jiffies_till_next_fqs=1, root ->qsmask 0x0 rcu: rcu_preempt kthread starved for 10004 jiffies! g2873 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior. rcu: RCU grace-period kthread stack dump: task:rcu_preempt state:R running task stack:14392 pid:16 tgid:16 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5376 [inline] __schedule+0x691/0x970 kernel/sched/core.c:6688 __schedule_loop kernel/sched/core.c:6763 [inline] schedule+0xab/0x110 kernel/sched/core.c:6778 schedule_timeout+0x117/0x190 kernel/time/timer.c:2167 rcu_gp_fqs_loop+0x17a/0x590 kernel/rcu/tree.c:1631 rcu_gp_kthread+0x1c/0x110 kernel/rcu/tree.c:1830 kthread+0xe9/0x100 kernel/kthread.c:388 ret_from_fork+0x32/0x40 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:242 rcu: Stack dump where RCU GP kthread last ran: CPU: 0 PID: 3905 Comm: syz.4.17 Not tainted 6.7.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 RIP: 0010:trace_block_touch_buffer include/trace/events/block.h:46 [inline] RIP: 0010:touch_buffer fs/buffer.c:64 [inline] RIP: 0010:__find_get_block+0x10b/0x4e0 fs/buffer.c:1405 Code: 89 03 48 83 c3 f8 48 ff c5 75 d6 48 c7 c7 68 7a 16 83 e8 88 d5 27 01 65 4c 89 35 58 64 ca 7e f0 41 ff 46 60 fb 0f 1f 44 00 00 <65> 8b 05 ca 99 ca 7e 89 c0 48 0f a3 05 9c c4 4d 02 73 05 e8 2d 90 RSP: 0018:ffffc90001e9fc30 EFLAGS: 00000202 RAX: 0000000000000000 RBX: 0000000000029848 RCX: 0000000000108c48 RDX: 0000000000000200 RSI: ffffffff831986bc RDI: ffffffff830c19c7 RBP: 0000000000000000 R08: 000000000000000d R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000200 R13: ffff888110503700 R14: ffff88817980e1f8 R15: 0000000000000080 FS: 00007ffaf71d66c0(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2db5ffff CR3: 0000000105b0c000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: bdev_getblk+0x22/0x320 fs/buffer.c:1423 __bread_gfp+0x25/0xf0 fs/buffer.c:1474 sb_bread include/linux/buffer_head.h:324 [inline] __exfat_ent_get fs/exfat/fatent.c:48 [inline] exfat_ent_get+0x59/0x140 fs/exfat/fatent.c:97 exfat_find_last_cluster+0x5f/0xd0 fs/exfat/fatent.c:253 exfat_cont_expand fs/exfat/file.c:39 [inline] exfat_setattr+0x17b/0x490 fs/exfat/file.c:299 notify_change+0x2e9/0x360 fs/attr.c:499 do_truncate+0xe1/0x120 fs/open.c:66 vfs_truncate+0xde/0x110 fs/open.c:112 do_sys_truncate+0x75/0xf0 fs/open.c:135 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x4d/0xf0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x6f/0x77 RIP: 0033:0x7ffaf638d169 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffaf71d6038 EFLAGS: 00000246 ORIG_RAX: 000000000000004c RAX: ffffffffffffffda RBX: 00007ffaf65a5fa0 RCX: 00007ffaf638d169 RDX: 0000000000000000 RSI: 000000000000f000 RDI: 0000400000000080 RBP: 00007ffaf640e2a0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007ffaf65a5fa0 R15: 00007ffc20e74558