ci2 starts bisection 2023-09-03 07:42:04.248854827 +0000 UTC m=+224435.131226107 bisecting cause commit starting from 92901222f83d988617aee37680cb29e1a743b5e4 building syzkaller on 696ea0d2f4fdaa17db929e152edba19bf7666d84 ensuring issue is reproducible on original commit 92901222f83d988617aee37680cb29e1a743b5e4 testing commit 92901222f83d988617aee37680cb29e1a743b5e4 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 0605635b4d1d24831e79216becca7fe0bcaf3b7b981a7de758b85652838c844e all runs: crashed: INFO: task hung in write_cache_pages representative crash: INFO: task hung in write_cache_pages, types: [HANG] check whether we can drop unnecessary instrumentation disabling configs for [ATOMIC_SLEEP LEAK UBSAN BUG KASAN LOCKDEP], they are not needed testing commit 92901222f83d988617aee37680cb29e1a743b5e4 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: e488e0335d0a261ef95c40951820587479e911f9c5661848f540b8419ef20281 all runs: crashed: INFO: task hung in write_cache_pages representative crash: INFO: task hung in write_cache_pages, 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=3876 full=7683 leaves diff=2020 split chunks (needed=false): <2020> split chunk #0 of len 2020 into 5 parts testing without sub-chunk 1/5 disabling configs for [UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP LEAK], they are not needed testing commit 92901222f83d988617aee37680cb29e1a743b5e4 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 3257c98e71374b1959ba8b0a39418ef41904562e4273a8f46a06185801682255 all runs: crashed: INFO: task hung in write_cache_pages representative crash: INFO: task hung in write_cache_pages, 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 92901222f83d988617aee37680cb29e1a743b5e4 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 2299ad7364bf31bddad04221e282a0a080a74865d6dd5decd451b7f6daf9bb7a all runs: OK false negative chance: 0.000 testing without sub-chunk 3/5 disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit 92901222f83d988617aee37680cb29e1a743b5e4 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 52d239f10bc7d3280d69bbdbfe9ad3c44dbdf2f6ed76f11ac613599977733c7b all runs: crashed: INFO: task hung in write_cache_pages representative crash: INFO: task hung in write_cache_pages, 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 92901222f83d988617aee37680cb29e1a743b5e4 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b1770b28962847fdb9cc853e656d21cb862afb1ff203a8e33b4ebac890e9426e all runs: crashed: INFO: task hung in write_cache_pages representative crash: INFO: task hung in write_cache_pages, 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 92901222f83d988617aee37680cb29e1a743b5e4 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 1c30231be3a3fc3dad2db99d157c9f2d161ea0c3cc83d2dcb62d48b13f639f3e all runs: crashed: INFO: task hung in write_cache_pages representative crash: INFO: task hung in write_cache_pages, types: [HANG] the chunk can be dropped minimized to 404 configs; suspects: [6LOWPAN ARCH_ENABLE_MEMORY_HOTREMOVE ASUS_WMI BLK_DEV_ZONED CMA COMMON_CLK DAX DLM DM_VERITY DM_VERITY_FEC DM_WRITECACHE DM_ZONED DRAGONRISE_FF DRM DRM_BOCHS DRM_BRIDGE DRM_BUDDY DRM_CIRRUS_QEMU DRM_DEBUG_MM DRM_DISPLAY_DP_HELPER DRM_DISPLAY_HDCP_HELPER DRM_DISPLAY_HDMI_HELPER DRM_DISPLAY_HELPER DRM_DP_AUX_BUS DRM_DP_AUX_CHARDEV DRM_FBDEV_EMULATION DRM_GEM_SHMEM_HELPER 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 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_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 EVM_EXTRA_SMACK_XATTRS EXFAT_FS EXPORTFS_BLOCK_OPS EXT3_FS EXT3_FS_POSIX_ACL EXT3_FS_SECURITY EXTCON EXTCON_INTEL_CHT_WC 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_HELPERS FB_NOTIFY FB_SYSMEM_HELPERS FB_SYSMEM_HELPERS_DEFERRED 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_SYSFS FW_LOADER_USER_HELPER FW_LOADER_USER_HELPER_FALLBACK GACT_PROB GARP GENERIC_PHY GET_FREE_REGION 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 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_EVENTFD HAVE_KVM_IRQCHIP HAVE_KVM_IRQFD HAVE_KVM_IRQ_BYPASS HAVE_KVM_IRQ_ROUTING HAVE_KVM_MSI HAVE_KVM_NO_POLL HAVE_KVM_PFNCACHE 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_CMEDIA HID_CORSAIR HID_CP2112 HID_DRAGONRISE HID_ELECOM HID_ELO HID_EMS_FF HID_GEMBIRD HID_GFRM HID_GREENASIA HID_GT683R HID_HOLTEK HID_ICADE HID_KEYTOUCH HID_KYE HID_LCPOWER HID_LED HID_LENOVO HID_LOGITECH_DJ HID_LOGITECH_HIDPP HID_MAGICMOUSE HID_MAYFLASH 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_SENSOR_ACCEL_3D HID_SENSOR_ALS 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_STEELSERIES HID_THINGM HID_TIVO HID_TWINHAN HID_UCLOGIC HID_UDRAW_PS3 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_DESIGNWARE_CORE I2C_DESIGNWARE_PLATFORM 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_IDMA64 INTEL_IOATDMA INTEL_IOMMU_DEFAULT_ON INTEL_IOMMU_SVM INTEL_ISH_HID INTEL_SOC_PMIC_CHTWC INTERVAL_TREE INTERVAL_TREE_SPAN_ITER IOMMUFD IOMMUFD_TEST IOMMU_SVA 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 IP_VS_FTP IP_VS_IPV6 IP_VS_LBLC IP_VS_PROTO_TCP 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_FWD_NETDEV NF_TABLES NF_TABLES_NETDEV RADIO_ADAPTERS RADIO_SI4713 RAS RC_CORE RFKILL SND SOUND STAGING TRANSPARENT_HUGEPAGE VIDEO_DEV VIRTIO_FS WAN ZONE_DEVICE] disabling configs for [UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP LEAK], they are not needed picked [%!d(string=v6.5) %!d(string=v6.4) %!d(string=v6.3) %!d(string=v6.1) %!d(string=v5.19) %!d(string=v5.17) %!d(string=v5.15) %!d(string=v5.13) %!d(string=v5.10) %!d(string=v5.7) %!d(string=v5.4) %!d(string=v5.1) %!d(string=v4.19)] out of %!d(MISSING) release tags testing release v6.5 testing commit 2dde18cd1d8fac735875f2e4987f11817cc0bc2c gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c2de1534fff6b001cd034e4b7ca58dcbbc3983ff2896176d1953d05130b395dd all runs: crashed: INFO: task hung in write_cache_pages representative crash: INFO: task hung in write_cache_pages, types: [HANG] testing release v6.4 testing commit 6995e2de6891c724bfeb2db33d7b87775f913ad1 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ad55090635c4c4a307b830a52794c4e4652c9b173a553919f94da7a2a545c189 all runs: crashed: INFO: task hung in write_cache_pages representative crash: INFO: task hung in write_cache_pages, types: [HANG] testing release v6.3 testing commit 457391b0380335d5e9a5babdec90ac53928b23b4 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6f2163217c61baabad397e82bff3254729357534f2ae4d7309ab8fe36b6248a7 all runs: crashed: INFO: task hung in write_cache_pages representative crash: INFO: task hung in write_cache_pages, types: [HANG] testing release v6.1 testing commit 830b3c68c1fb1e9176028d02ef86f3cf76aa2476 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d44a87d10ac07adddf070160b9bba91943d3364e6729384dc4d4feb1f5a468fe all runs: crashed: INFO: task hung in write_cache_pages representative crash: INFO: task hung in write_cache_pages, types: [HANG] testing release v5.19 testing commit 3d7cb6b04c3f3115719235cc6866b10326de34cd gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: bd842ee75dd134a13a0d8bd701f43b17711f7c92cf20848013aa89b3c43acf5c all runs: crashed: INFO: task hung in write_cache_pages representative crash: INFO: task hung in write_cache_pages, types: [HANG] testing release v5.17 testing commit f443e374ae131c168a065ea1748feac6b2e76613 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 5cce72b042f6da55a1caf108b2eec962cdd2e45dcb4800b5f7745218641ff7bb all runs: crashed: INFO: task hung in write_cache_pages representative crash: INFO: task hung in write_cache_pages, types: [HANG] testing release v5.15 testing commit 8bb7eca972ad531c9b149c0a51ab43a417385813 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 86c3d1abab4556e0a6bad26019c39f000d2dc258dfe564e20f5c134d5bf5312a all runs: crashed: INFO: task hung in write_cache_pages representative crash: INFO: task hung in write_cache_pages, types: [HANG] testing release v5.13 testing commit 62fb9874f5da54fdb243003b386128037319b219 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: f06f8b2081b161da83a14d3b7db5f0b00fa000c560cfcb681c6f7469f506e4b0 all runs: crashed: INFO: task hung in write_cache_pages representative crash: INFO: task hung in write_cache_pages, types: [HANG] testing release v5.10 testing commit 2c85ebc57b3e1817b6ce1a6b703928e113a90442 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ff9e24a29a404ec8fb3167be2eb4dee71cc572314d447729985da47d4902438b all runs: OK false negative chance: 0.000 # git bisect start 62fb9874f5da54fdb243003b386128037319b219 2c85ebc57b3e1817b6ce1a6b703928e113a90442 Bisecting: 23399 revisions left to test after this (roughly 15 steps) [d6560052c2f73db59834e9a3c0aba20579aa7059] Merge tag 'regulator-v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator testing commit d6560052c2f73db59834e9a3c0aba20579aa7059 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 1bf994f94999d86ac4fde77906ba0388780206c859978364330bb928456b9951 all runs: OK false negative chance: 0.000 # git bisect good d6560052c2f73db59834e9a3c0aba20579aa7059 Bisecting: 12060 revisions left to test after this (roughly 14 steps) [3aa139aa9fdc138a84243dc49dc18d9b40e1c6e4] Merge tag 'media/v5.13-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media testing commit 3aa139aa9fdc138a84243dc49dc18d9b40e1c6e4 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 7fc7b560764e8f48ca2f7d9316f5dd55c7800b3873fd35f64b4271e61167d1f5 all runs: crashed: INFO: task hung in write_cache_pages representative crash: INFO: task hung in write_cache_pages, types: [HANG] # git bisect bad 3aa139aa9fdc138a84243dc49dc18d9b40e1c6e4 Bisecting: 5667 revisions left to test after this (roughly 13 steps) [39b53e23532f5da13757d88eeb1290da864bfdf4] Merge tag 'soundwire-5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/soundwire into char-misc-next testing commit 39b53e23532f5da13757d88eeb1290da864bfdf4 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ac6f67857e58c5c4ec6007ef7d0754436224892dd6ea701247207e96738cbe50 all runs: crashed: INFO: task hung in write_cache_pages representative crash: INFO: task hung in write_cache_pages, types: [HANG] # git bisect bad 39b53e23532f5da13757d88eeb1290da864bfdf4 Bisecting: 2775 revisions left to test after this (roughly 12 steps) [4c48faba5b7f18fb53e4aeeb768932f17c9da1ed] Merge branch 'akpm' (patches from Andrew) testing commit 4c48faba5b7f18fb53e4aeeb768932f17c9da1ed gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d08b514d69eef982c463c25eb43972f6f463c4b2c7606c90e51a9a49861764ce all runs: crashed: INFO: task hung in write_cache_pages representative crash: INFO: task hung in write_cache_pages, types: [HANG] # git bisect bad 4c48faba5b7f18fb53e4aeeb768932f17c9da1ed Bisecting: 1415 revisions left to test after this (roughly 11 steps) [3a36281a17199737b468befb826d4a23eb774445] Merge tag 'perf-tools-for-v5.12-2020-02-19' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux testing commit 3a36281a17199737b468befb826d4a23eb774445 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 2d3bc485723e280f6a4ffb51fae4b40838f4ca6a7656589b26c8bbf96e3aa6d5 all runs: OK false negative chance: 0.000 # git bisect good 3a36281a17199737b468befb826d4a23eb774445 Bisecting: 707 revisions left to test after this (roughly 10 steps) [143983e585073f18fbe3b7d30ed0f92cfc218cef] Merge tag 'dmaengine-5.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine testing commit 143983e585073f18fbe3b7d30ed0f92cfc218cef gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 1be4cc0a3b35c995aa58b94d33196095c0a13417d01c7f30681060f165261bca all runs: crashed: INFO: task hung in write_cache_pages representative crash: INFO: task hung in write_cache_pages, types: [HANG] # git bisect bad 143983e585073f18fbe3b7d30ed0f92cfc218cef Bisecting: 354 revisions left to test after this (roughly 9 steps) [3b9cdafb5358eb9f3790de2f728f765fef100731] Merge tag 'pinctrl-v5.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl testing commit 3b9cdafb5358eb9f3790de2f728f765fef100731 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b80247eaa5a2cf2148eb6ef9050d7bbc2194b665287b3640f1d83e06d9e210c6 all runs: OK false negative chance: 0.000 # git bisect good 3b9cdafb5358eb9f3790de2f728f765fef100731 Bisecting: 183 revisions left to test after this (roughly 8 steps) [c3476d2f2b1dcda2f089412e5844bf4f93c19229] scripts/dtc: Add missing fdtoverlay to gitignore testing commit c3476d2f2b1dcda2f089412e5844bf4f93c19229 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 5fa44a167c8ec313d030fbd47f516e928c442e9d8f1bf40847bd4669cdb06b4e all runs: crashed: INFO: task hung in write_cache_pages representative crash: INFO: task hung in write_cache_pages, types: [HANG] # git bisect bad c3476d2f2b1dcda2f089412e5844bf4f93c19229 Bisecting: 93 revisions left to test after this (roughly 7 steps) [aa8e3291729fd885351af0b077330721d4bf5db9] Merge branch 'for-5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/dennis/percpu testing commit aa8e3291729fd885351af0b077330721d4bf5db9 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 06b7ab0958a9122941198e0d77f12adf59207ee888d1536a0ef7528a2fe95a63 all runs: OK false negative chance: 0.000 # git bisect good aa8e3291729fd885351af0b077330721d4bf5db9 Bisecting: 44 revisions left to test after this (roughly 6 steps) [803074ad77b91e270c1ce90793a924cdb4547162] Merge branches 'rgrp-glock-sharing' and 'gfs2-revoke' from https://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2.git testing commit 803074ad77b91e270c1ce90793a924cdb4547162 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 3fc56e7a60f1f2fea169986fe5d5e98dc4db2416db04f80c61981fca74950dfc all runs: crashed: INFO: task hung in write_cache_pages representative crash: INFO: task hung in write_cache_pages, types: [HANG] # git bisect bad 803074ad77b91e270c1ce90793a924cdb4547162 Bisecting: 29 revisions left to test after this (roughly 5 steps) [2129b4288852cf872c42870c7f6e813ce0611199] gfs2: Per-revoke accounting in transactions testing commit 2129b4288852cf872c42870c7f6e813ce0611199 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b6b63998de03d960d3e98973bc1ca1ffba254294fdd20073498405731106f97f all runs: OK false negative chance: 0.000 # git bisect good 2129b4288852cf872c42870c7f6e813ce0611199 Bisecting: 14 revisions left to test after this (roughly 4 steps) [06e908cd9ead1f215cc30132aac5ce132a352fbe] gfs2: Allow node-wide exclusive glock sharing testing commit 06e908cd9ead1f215cc30132aac5ce132a352fbe gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 4054a1f8918c15cad24b44909b9ff527d8c0213f79ec5cb7e3667dea41febd7d all runs: OK false negative chance: 0.000 # git bisect good 06e908cd9ead1f215cc30132aac5ce132a352fbe Bisecting: 7 revisions left to test after this (roughly 3 steps) [f5f02fde9f52b2d769c1c2ddfd3d9c4a1fe739a7] gfs2: fix glock confusion in function signal_our_withdraw testing commit f5f02fde9f52b2d769c1c2ddfd3d9c4a1fe739a7 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 48af3a9b1d690a32351b6b2b5f0c6717ad5c88ea4358a7268ba5d6f790a3e88f all runs: OK false negative chance: 0.000 # git bisect good f5f02fde9f52b2d769c1c2ddfd3d9c4a1fe739a7 Bisecting: 3 revisions left to test after this (roughly 2 steps) [47b7ec1daa511cd82cb9c31e88bfdb664b031d2a] gfs2: Enable rgrplvb for sb_fs_format 1802 testing commit 47b7ec1daa511cd82cb9c31e88bfdb664b031d2a gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 7c5b2ea58252593910ed8d8a39661f7356205556e5e10bcf6242ab7f8a3c6e07 all runs: crashed: INFO: task hung in write_cache_pages representative crash: INFO: task hung in write_cache_pages, types: [HANG] # git bisect bad 47b7ec1daa511cd82cb9c31e88bfdb664b031d2a Bisecting: 1 revision left to test after this (roughly 1 step) [834ec3e1ee65029029225a86c12337a6cd385af7] gfs2: Lock imbalance on error path in gfs2_recover_one testing commit 834ec3e1ee65029029225a86c12337a6cd385af7 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 68cd6c2a7457f99829d679993fc18660651f9269a43a99f1cf6882b6eda9a6e1 all runs: OK false negative chance: 0.000 # git bisect good 834ec3e1ee65029029225a86c12337a6cd385af7 Bisecting: 0 revisions left to test after this (roughly 0 steps) [78178ca844f0eb88f21f31c7fde969384be4c901] gfs2: Don't skip dlm unlock if glock has an lvb testing commit 78178ca844f0eb88f21f31c7fde969384be4c901 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 1a4dfa495157b971d18f80fc2b426c230b1af379793c40182acfadcdb08ce78e all runs: OK false negative chance: 0.000 # git bisect good 78178ca844f0eb88f21f31c7fde969384be4c901 47b7ec1daa511cd82cb9c31e88bfdb664b031d2a is the first bad commit commit 47b7ec1daa511cd82cb9c31e88bfdb664b031d2a Author: Andrew Price Date: Fri Feb 5 17:10:17 2021 +0000 gfs2: Enable rgrplvb for sb_fs_format 1802 Turn on rgrplvb by default for sb_fs_format > 1801. Mount options still have to override this so a new args field to differentiate between 'off' and 'not specified' is added, and the new default is applied only when it's not specified. Signed-off-by: Andrew Price Signed-off-by: Andreas Gruenbacher fs/gfs2/incore.h | 1 + fs/gfs2/ops_fstype.c | 13 ++++++++++--- fs/gfs2/super.h | 4 ++++ 3 files changed, 15 insertions(+), 3 deletions(-) accumulated error probability: 0.00 culprit signature: 7c5b2ea58252593910ed8d8a39661f7356205556e5e10bcf6242ab7f8a3c6e07 parent signature: 1a4dfa495157b971d18f80fc2b426c230b1af379793c40182acfadcdb08ce78e revisions tested: 32, total time: 6h22m18.955216506s (build: 1h39m30.169669608s, test: 4h34m42.407890855s) first bad commit: 47b7ec1daa511cd82cb9c31e88bfdb664b031d2a gfs2: Enable rgrplvb for sb_fs_format 1802 recipients (to): ["agruenba@redhat.com" "anprice@redhat.com"] recipients (cc): [] crash: INFO: task hung in write_cache_pages INFO: task syz-executor.0:2752 blocked for more than 143 seconds. Not tainted 5.10.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:13920 pid: 2752 ppid: 2338 flags:0x00000006 Call Trace: context_switch kernel/sched/core.c:4327 [inline] __schedule+0x2bf/0x7a0 kernel/sched/core.c:5078 schedule+0x41/0xa0 kernel/sched/core.c:5157 io_schedule+0x3d/0x60 kernel/sched/core.c:6852 wait_on_page_bit_common+0x12d/0x4a0 mm/filemap.c:1273 lock_page include/linux/pagemap.h:611 [inline] write_cache_pages+0x29c/0x480 mm/page-writeback.c:2213 iomap_writepages+0x17/0x30 fs/iomap/buffered-io.c:1565 gfs2_writepages+0x61/0xa0 fs/gfs2/aops.c:216 do_writepages+0x2c/0xb0 mm/page-writeback.c:2352 __filemap_fdatawrite_range+0xc0/0x100 mm/filemap.c:422 gfs2_ordered_write fs/gfs2/log.c:643 [inline] gfs2_log_flush+0x3b7/0xc60 fs/gfs2/log.c:996 gfs2_trans_end+0x14b/0x160 fs/gfs2/trans.c:122 gfs2_page_mkwrite+0x3c7/0x5d0 fs/gfs2/file.c:544 do_page_mkwrite+0x46/0x100 mm/memory.c:2714 do_shared_fault mm/memory.c:4081 [inline] do_fault mm/memory.c:4149 [inline] handle_pte_fault mm/memory.c:4385 [inline] __handle_mm_fault mm/memory.c:4520 [inline] handle_mm_fault+0xeb7/0x17d0 mm/memory.c:4618 do_user_addr_fault arch/x86/mm/fault.c:1393 [inline] handle_page_fault arch/x86/mm/fault.c:1450 [inline] exc_page_fault+0x1b2/0x590 arch/x86/mm/fault.c:1506 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:580 RIP: 0033:0x7f394d048331 RSP: 002b:00007fffbdf8d890 EFLAGS: 00010246 RAX: 0000000020000180 RBX: 0000000000000004 RCX: 0000000000000000 RDX: 0000000000000001 RSI: 0000000000000000 RDI: 00005555561c8360 RBP: 0000000000000004 R08: 0000000000000000 R09: 0000000000000000 R10: 00007fffbdf8da00 R11: 0000000000000246 R12: 00007f394cc2f930 R13: fffffffffffffffe R14: 00007f394cc1d000 R15: 00007f394cc2f938 Showing all locks held in the system: 1 lock held by khungtaskd/301: #0: ffffffff82fd7080 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x15/0xf2 kernel/locking/lockdep.c:6255 3 locks held by kworker/u4:2/303: #0: ffff888103548938 ((wq_completion)writeback){....}-{0:0}, at: wake_up_worker kernel/workqueue.c:837 [inline] #0: ffff888103548938 ((wq_completion)writeback){....}-{0:0}, at: process_one_work+0x1bc/0x430 kernel/workqueue.c:2238 #1: ffffc90000127e70 ((work_completion)(&(&wb->dwork)->work)){....}-{0:0}, at: wake_up_worker kernel/workqueue.c:837 [inline] #1: ffffc90000127e70 ((work_completion)(&(&wb->dwork)->work)){....}-{0:0}, at: process_one_work+0x1bc/0x430 kernel/workqueue.c:2238 #2: ffff88811a1bd0e0 (&type->s_umount_key#44){....}-{3:3}, at: trylock_super+0x11/0x50 fs/super.c:418 2 locks held by getty/1714: #0: ffff888103fd8898 (&tty->ldisc_sem){....}-{0:0}, at: tty_ldisc_ref_wait+0x1f/0x50 drivers/tty/tty_ldisc.c:266 #1: ffffc90002d4b2e8 (&ldata->atomic_read_lock){....}-{3:3}, at: n_tty_read+0xd4/0x9b0 drivers/tty/n_tty.c:2158 4 locks held by syz-executor.0/2752: #0: ffff888100faa858 (&mm->mmap_lock#2){....}-{3:3}, at: mmap_read_lock include/linux/mmap_lock.h:117 [inline] #0: ffff888100faa858 (&mm->mmap_lock#2){....}-{3:3}, at: do_user_addr_fault arch/x86/mm/fault.c:1344 [inline] #0: ffff888100faa858 (&mm->mmap_lock#2){....}-{3:3}, at: handle_page_fault arch/x86/mm/fault.c:1450 [inline] #0: ffff888100faa858 (&mm->mmap_lock#2){....}-{3:3}, at: exc_page_fault+0x3f8/0x590 arch/x86/mm/fault.c:1506 #1: ffff88811a1bd548 (sb_pagefaults){....}-{0:0}, at: do_page_mkwrite+0x46/0x100 mm/memory.c:2714 #2: ffff88811a1bd640 (sb_internal#2){....}-{0:0}, at: gfs2_page_mkwrite+0x368/0x5d0 fs/gfs2/file.c:522 #3: ffff88810c6eb010 (&sdp->sd_log_flush_lock){....}-{3:3}, at: gfs2_log_flush+0x43/0xc60 fs/gfs2/log.c:961 1 lock held by gfs2_logd/2755: #0: ffff88810c6eb010 (&sdp->sd_log_flush_lock){....}-{3:3}, at: gfs2_log_flush+0x43/0xc60 fs/gfs2/log.c:961 2 locks held by gfs2_quotad/2756: #0: ffff88811a1bd640 (sb_internal#2){....}-{0:0}, at: gfs2_statfs_sync+0x16e/0x1c0 fs/gfs2/super.c:367 #1: ffff88810c6eb010 (&sdp->sd_log_flush_lock){....}-{3:3}, at: gfs2_log_reserve+0x1a5/0x2d0 fs/gfs2/log.c:475 4 locks held by syz-executor.0/6493: ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 301 Comm: khungtaskd Not tainted 5.10.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023 Call Trace: __dump_stack lib/dump_stack.c:79 [inline] dump_stack+0x57/0x6a lib/dump_stack.c:120 nmi_cpu_backtrace.cold+0x32/0x69 lib/nmi_backtrace.c:105 nmi_trigger_cpumask_backtrace+0x81/0x90 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:209 [inline] watchdog+0x4b1/0x4c0 kernel/hung_task.c:294 kthread+0x116/0x130 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:60 [inline] NMI backtrace for cpu 0 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:103 [inline] NMI backtrace for cpu 0 skipped: idling at acpi_safe_halt drivers/acpi/processor_idle.c:110 [inline] NMI backtrace for cpu 0 skipped: idling at acpi_idle_do_entry+0x4a/0x50 drivers/acpi/processor_idle.c:516