ci2 starts bisection 2024-12-25 07:27:48.738521615 +0000 UTC m=+127180.686232048 bisecting cause commit starting from 9b2ffa6148b1e4468d08f7e0e7e371c43cac9ffe building syzkaller on 444551c40edde85b5e4900ae27d432bd1da7079c ensuring issue is reproducible on original commit 9b2ffa6148b1e4468d08f7e0e7e371c43cac9ffe testing commit 9b2ffa6148b1e4468d08f7e0e7e371c43cac9ffe gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 89efd7e9455d37864686044cd6f3b0660199e6c1796e3dfb71c79915d1bb87ae all runs: crashed: INFO: task hung in exfat_lookup representative crash: INFO: task hung in exfat_lookup, 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 9b2ffa6148b1e4468d08f7e0e7e371c43cac9ffe gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: bef7d96d55e6775c5b2adc57961d54ba12edcac0f47884eb682e0c1029565265 run #0: crashed: INFO: task hung in exfat_lookup run #1: crashed: INFO: task hung in exfat_lookup run #2: crashed: INFO: task hung in exfat_lookup run #3: crashed: INFO: task hung in corrupted run #4: crashed: INFO: task hung in exfat_lookup run #5: crashed: INFO: task hung in exfat_lookup run #6: crashed: INFO: task hung in corrupted run #7: crashed: INFO: task hung in exfat_lookup run #8: crashed: INFO: task hung in exfat_lookup run #9: crashed: INFO: task hung in exfat_lookup representative crash: INFO: task hung in exfat_lookup, types: [HANG] the bug reproduces without the instrumentation disabling configs for [BUG KASAN LOCKDEP ATOMIC_SLEEP LEAK UBSAN], they are not needed kconfig minimization: base=4037 full=8236 leaves diff=2125 split chunks (needed=false): <2125> split chunk #0 of len 2125 into 5 parts testing without sub-chunk 1/5 disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit 9b2ffa6148b1e4468d08f7e0e7e371c43cac9ffe gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 7ead69822d310ea8371e6f4f3efa4eac61ba69a264869b0e81f1b50c60f7da12 all runs: crashed: INFO: task hung in exfat_lookup representative crash: INFO: task hung in exfat_lookup, types: [HANG] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit 9b2ffa6148b1e4468d08f7e0e7e371c43cac9ffe gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 failed building 9b2ffa6148b1e4468d08f7e0e7e371c43cac9ffe: 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 [UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP LEAK], they are not needed testing commit 9b2ffa6148b1e4468d08f7e0e7e371c43cac9ffe gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: f197573e12f8fdd9474104618c7eac1de26384def55a5e93afb1728806f7e331 all runs: crashed: INFO: task hung in exfat_lookup representative crash: INFO: task hung in exfat_lookup, types: [HANG] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [LOCKDEP ATOMIC_SLEEP LEAK UBSAN BUG KASAN], they are not needed testing commit 9b2ffa6148b1e4468d08f7e0e7e371c43cac9ffe gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: fe7ae83da6102fdff934ff79e0503ba32e21070eb9c90227621bfb9066232f47 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 [ATOMIC_SLEEP LEAK UBSAN BUG KASAN LOCKDEP], they are not needed testing commit 9b2ffa6148b1e4468d08f7e0e7e371c43cac9ffe gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ee4fdaf26c1dd1a72ae0c4a4b98370b34b573db86c5c9fce7513e0fade356b96 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 425 configs; suspects: [6LOWPAN ARCH_ENABLE_MEMORY_HOTREMOVE ASUS_WMI CHARGER_BQ24190 CMA COMMON_CLK DAX DLM DRM DRM_BRIDGE DRM_I915 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 EEPROM_93CX6 EFS_FS ENCRYPTED_KEYS EQUALIZER EROFS_FS EROFS_FS_BACKED_BY_FILE 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 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 GROUP_SCHED_WEIGHT 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 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 [BUG KASAN LOCKDEP ATOMIC_SLEEP LEAK UBSAN], they are not needed picked [v6.12 v6.11 v6.10 v6.8 v6.6 v6.4 v6.2 v6.0 v5.17 v5.14 v5.11 v5.8 v5.5 v5.2 v4.20 v4.19] out of 35 release tags 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: 086aa0240108bdd61e1d7af73686236ec7d487f97741bca46865feb9d4a391a7 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: d565a71fe1e91f4b986be541f5b5bdc7cb550518c3e2deab07650dce3a6a0756 all runs: crashed: INFO: rcu detected stall in corrupted representative crash: INFO: rcu detected stall in corrupted, types: [HANG] testing release v6.10 testing commit 0c3836482481200ead7b416ca80c68a29cfdaabd gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 8126c3db2dcc6c7a9ecdd0685830d600660b0765a4f966ba4e12204d1d61af23 all runs: crashed: INFO: rcu detected stall in corrupted representative crash: INFO: rcu detected stall in corrupted, types: [HANG] testing release v6.8 testing commit e8f897f4afef0031fe618a8e94127a0934896aba gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: e98b1074754822ab2dadf76512bf05d67ef0740221dc681610442f2563dd0e6b all runs: crashed: INFO: rcu detected stall in corrupted representative crash: INFO: rcu detected stall in corrupted, types: [HANG] testing release v6.6 testing commit ffc253263a1375a65fa6c9f62a893e9767fbebfa gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 26d08aba43879a12bc6c986cdccc8c1851788ad11ffc7dd784270ea1bd9efad3 all runs: OK false negative chance: 0.000 # git bisect start e8f897f4afef0031fe618a8e94127a0934896aba ffc253263a1375a65fa6c9f62a893e9767fbebfa Bisecting: 17028 revisions left to test after this (roughly 14 steps) [cae0de45c8fd62612e1ee429134fd82c2c0e335e] Merge branch 'net-phylink-improve-phy-validation' testing commit cae0de45c8fd62612e1ee429134fd82c2c0e335e gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 35764af8df1188e2431efcd4724188fb910e3ac8d365e5a1c3812a034d7eda4a all runs: OK false negative chance: 0.000 # git bisect good cae0de45c8fd62612e1ee429134fd82c2c0e335e Bisecting: 9372 revisions left to test after this (roughly 13 steps) [ba5afb9a84df2e6b26a1b6389b98849cd16ea757] fs: rework listmount() implementation testing commit ba5afb9a84df2e6b26a1b6389b98849cd16ea757 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 97904b35eecffb1d3f6ab9cf07b21ca305f0addbdfa8a87bf6b6234dbdbe7b4f all runs: OK false negative chance: 0.000 # git bisect good ba5afb9a84df2e6b26a1b6389b98849cd16ea757 Bisecting: 4547 revisions left to test after this (roughly 12 steps) [296455ade1fdcf5f8f8c033201633b60946c589a] Merge tag 'char-misc-6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc testing commit 296455ade1fdcf5f8f8c033201633b60946c589a gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c7cbc141419dadd4b2c0313014125f8a5c8f0ea61723a204178d075079ee8fc3 all runs: crashed: INFO: rcu detected stall in corrupted representative crash: INFO: rcu detected stall in corrupted, types: [HANG] # git bisect bad 296455ade1fdcf5f8f8c033201633b60946c589a Bisecting: 2441 revisions left to test after this (roughly 11 steps) [205e18c13545ab43cc4fe4930732b4feef551198] nouveau/gsp: handle engines in runl without nonstall interrupts. testing commit 205e18c13545ab43cc4fe4930732b4feef551198 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 372f96db5f8d7aa89008345eeca52dded1c3efe7e932efa51800ff9d51072e83 all runs: OK false negative chance: 0.000 # git bisect good 205e18c13545ab43cc4fe4930732b4feef551198 Bisecting: 1213 revisions left to test after this (roughly 10 steps) [42bff4d0f9b9c8b669c5cef25c5116f41eb45c6b] Merge tag 'pwm/for-6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm testing commit 42bff4d0f9b9c8b669c5cef25c5116f41eb45c6b gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 02c1b239aee4d9b727152e5acb1f1c6badeae1a297e1f1ebc5c56e859b749bf9 all runs: OK false negative chance: 0.000 # git bisect good 42bff4d0f9b9c8b669c5cef25c5116f41eb45c6b Bisecting: 616 revisions left to test after this (roughly 9 steps) [5d197e97fb106c09d3d013be341e5961fd70ec8a] Merge tag 'hsi-for-6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-hsi testing commit 5d197e97fb106c09d3d013be341e5961fd70ec8a gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 89389d5a26d15d5bfa30ebba08e7465a81e0eb1c7a808bfacd7df8885d87d440 all runs: crashed: INFO: rcu detected stall in corrupted representative crash: INFO: rcu detected stall in corrupted, types: [HANG] # git bisect bad 5d197e97fb106c09d3d013be341e5961fd70ec8a Bisecting: 374 revisions left to test after this (roughly 8 steps) [1b1934dbbdcf9aa2d507932ff488cec47999cf3f] Merge tag 'docs-6.8-2' of git://git.lwn.net/linux testing commit 1b1934dbbdcf9aa2d507932ff488cec47999cf3f gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 9640c789739b5001540cdae9504d54c6d920024282c7b647c81d93099ba42563 all runs: crashed: INFO: rcu detected stall in corrupted representative crash: INFO: rcu detected stall in corrupted, types: [HANG] # git bisect bad 1b1934dbbdcf9aa2d507932ff488cec47999cf3f Bisecting: 120 revisions left to test after this (roughly 7 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: 964f4326b73accc1d8651f3fec2ecaa6845c1efe78e9445d1b1d6c45e2599453 all runs: crashed: INFO: rcu detected stall in corrupted representative crash: INFO: rcu detected stall in corrupted, types: [HANG] # git bisect bad 0c6bc37255927cf2e2cfdd9dc9bd1eced9c166de Bisecting: 43 revisions left to test after this (roughly 6 steps) [23a80d462c67406303df852d58b745b8618acc4a] Merge tag 'rcu.release.v6.8' of https://github.com/neeraju/linux testing commit 23a80d462c67406303df852d58b745b8618acc4a gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b53b5e916d2ee2867526e7f8182ab03600434c330795d39b90dd8fce35259d3e all runs: OK false negative chance: 0.000 # git bisect good 23a80d462c67406303df852d58b745b8618acc4a Bisecting: 26 revisions left to test after this (roughly 5 steps) [5d4747a6cc8e78ce74742d557fc9b7697fcacc95] userfaultfd: avoid huge_zero_page in UFFDIO_MOVE testing commit 5d4747a6cc8e78ce74742d557fc9b7697fcacc95 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: e6628f5dec1ed97757986f75f6fc79c05647a1ac5c5559746c251bcc2bc2cf2c all runs: OK false negative chance: 0.000 # git bisect good 5d4747a6cc8e78ce74742d557fc9b7697fcacc95 Bisecting: 12 revisions left to test after this (roughly 4 steps) [eebe75827b73b0a61e84acd2033ce304a3166d70] Merge tag 'fscrypt-for-linus' of git://git.kernel.org/pub/scm/fs/fscrypt/linux testing commit eebe75827b73b0a61e84acd2033ce304a3166d70 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: efc391f7f65af5a0e16fa9783405c5769584580c96ea5e52ab437282c77e841b all runs: crashed: INFO: rcu detected stall in corrupted representative crash: INFO: rcu detected stall in corrupted, types: [HANG] # git bisect bad eebe75827b73b0a61e84acd2033ce304a3166d70 Bisecting: 8 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: 0e5f706ffeb45a616347d239b87233b1d2b13958bd26b8ed72a8105d69853210 all runs: OK false negative chance: 0.000 # git bisect good f16ab99c2eba233bc97b9f9cc374f7a371fcc363 Bisecting: 4 revisions left to test after this (roughly 2 steps) [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: fb1c684f2365cc26641d3383342eba3a526eb765ad3bd2fdcb3f6b6f665f02b7 all runs: crashed: INFO: rcu detected stall in corrupted representative crash: INFO: rcu detected stall in corrupted, types: [HANG] # git bisect bad f55c096f62f100aa9f5f48d86e1b6846ecbd67e7 Bisecting: 1 revision 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: 4aa5654b31580055f47e20790da4991241c08183da8c30569598445f3d182d28 all runs: OK false negative chance: 0.000 # git bisect good 34939ae005ec402ee183956114b1a74cb57b8b9d 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: 915ae93162325f2b2a5dc81d41a0402498c3f643aa42500bbbff587c1cce085c 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: fb1c684f2365cc26641d3383342eba3a526eb765ad3bd2fdcb3f6b6f665f02b7 parent signature: 915ae93162325f2b2a5dc81d41a0402498c3f643aa42500bbbff587c1cce085c revisions tested: 26, total time: 8h20m51.333387871s (build: 3h52m49.477465873s, test: 4h11m44.243842831s) 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=2561, q=38346 ncpus=2) rcu: All QSes seen, last rcu_preempt kthread activity 10000 (4294956607-4294946607), jiffies_till_next_fqs=1, root ->qsmask 0x0 rcu: rcu_preempt kthread starved for 10000 jiffies! g2561 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:14448 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: 3486 Comm: syz.3.16 Not tainted 6.7.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:exfat_clear_bitmap+0x5c/0xe0 fs/exfat/balloc.c:160 Code: 03 41 0f b6 4e 14 48 d3 e8 41 8b 4e 18 8d 0c cd ff ff ff ff 21 d9 48 63 c9 49 8b 77 60 48 8b 34 c6 48 8b 76 28 f0 48 0f b3 0e <49> 8b 4f 60 48 8b 3c c1 0f b6 f2 e8 84 e9 ff ff 41 f6 87 b4 01 00 RSP: 0018:ffffc90001d67a28 EFLAGS: 00000206 RAX: 0000000000000000 RBX: 0000000000000009 RCX: 0000000000000009 RDX: 0000000000000000 RSI: ffff88816c867000 RDI: ffff88817e390168 RBP: ffff8881033db000 R08: 000000000000000c R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: ffff8881033db000 R15: ffff8881033da000 FS: 00007fb47bb046c0(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007eff79bb7440 CR3: 0000000109ba4000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __exfat_free_cluster+0x133/0x200 fs/exfat/fatent.c:213 exfat_free_cluster+0x35/0x60 fs/exfat/fatent.c:232 __exfat_truncate+0x1ac/0x1f0 fs/exfat/file.c:229 exfat_truncate+0x42/0xd0 fs/exfat/file.c:253 exfat_setattr+0x445/0x490 fs/exfat/file.c:355 notify_change+0x2e9/0x360 fs/attr.c:499 do_truncate+0xe1/0x120 fs/open.c:66 handle_truncate fs/namei.c:3280 [inline] do_open fs/namei.c:3626 [inline] path_openat+0xc97/0xd80 fs/namei.c:3779 do_filp_open+0xac/0x150 fs/namei.c:3809 do_sys_openat2+0x7e/0xe0 fs/open.c:1437 do_sys_open fs/open.c:1452 [inline] __do_sys_creat fs/open.c:1528 [inline] __se_sys_creat fs/open.c:1522 [inline] __x64_sys_creat+0x46/0x70 fs/open.c:1522 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: 0033:0x7fb47ad85d29 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:00007fb47bb04038 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 00007fb47af75fa0 RCX: 00007fb47ad85d29 RDX: 0000000000000000 RSI: 0000000000000020 RDI: 0000000020000200 RBP: 00007fb47ae01aa8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fb47af75fa0 R15: 00007ffd8c2ecb58