ci2 starts bisection 2024-06-02 14:19:12.661990029 +0000 UTC m=+145987.696350003 bisecting cause commit starting from 89be4025b0db42db830d72d532437248774cba49 building syzkaller on 3113787fe7a0c96998737e520aa95c303fdd41ef ensuring issue is reproducible on original commit 89be4025b0db42db830d72d532437248774cba49 testing commit 89be4025b0db42db830d72d532437248774cba49 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a974f8f492482b4af4d61eac44aecdb3863b4f9535becd72ffff9f2ad17fb26d all runs: crashed: INFO: task hung in nilfs_segctor_thread representative crash: INFO: task hung in nilfs_segctor_thread, 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 89be4025b0db42db830d72d532437248774cba49 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d06fa3837823abc6646a702114129f54aaee55161d3ab0ed84387fcfe133daef all runs: crashed: INFO: task hung in nilfs_segctor_thread representative crash: INFO: task hung in nilfs_segctor_thread, 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=3971 full=8037 leaves diff=2024 split chunks (needed=false): <2024> split chunk #0 of len 2024 into 5 parts testing without sub-chunk 1/5 disabling configs for [ATOMIC_SLEEP LEAK UBSAN BUG KASAN LOCKDEP], they are not needed testing commit 89be4025b0db42db830d72d532437248774cba49 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: f7f0dea23d9cda21b02ce64df99293ee91134500f8a0a9c61c66c8297a8537d9 all runs: crashed: INFO: task hung in nilfs_segctor_thread representative crash: INFO: task hung in nilfs_segctor_thread, 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 89be4025b0db42db830d72d532437248774cba49 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ce614b316d874d277def8afc27c903e10d36c1f5ac02910dca48ac5f6b3ed4db all runs: crashed: INFO: task hung in nilfs_segctor_thread representative crash: INFO: task hung in nilfs_segctor_thread, types: [HANG] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit 89be4025b0db42db830d72d532437248774cba49 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 31d7dc017bf0ace0d39f3ec6395fa1c2850711f3f9049361e549fd0040a0671b all runs: crashed: INFO: task hung in nilfs_segctor_thread representative crash: INFO: task hung in nilfs_segctor_thread, types: [HANG] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP LEAK UBSAN BUG], they are not needed testing commit 89be4025b0db42db830d72d532437248774cba49 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 77a884d07ce38fd72e222fca4e94ba244aba2a739b144ed038166524505e3473 all runs: OK false negative chance: 0.000 testing without sub-chunk 5/5 disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit 89be4025b0db42db830d72d532437248774cba49 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 5499633e334c51b89ce3443ae443409ef19400ea5543bc105877019044b04b1b all runs: crashed: INFO: task hung in nilfs_segctor_thread representative crash: INFO: task hung in nilfs_segctor_thread, types: [HANG] the chunk can be dropped minimized to 405 configs; suspects: [AF_RXRPC ARCH_ENABLE_MEMORY_HOTREMOVE ATM AX25 CFG80211 CMA DAX DLM DVB_CORE ENCRYPTED_KEYS EXTCON GENEVE GPIOLIB HAMRADIO HAVE_CLK HID_SENSOR_HUB HID_SMARTJOYPLUS HID_THRUSTMASTER IIO INFINIBAND INFINIBAND_ADDR_TRANS INFINIBAND_IPOIB INFINIBAND_USER_ACCESS INFINIBAND_VIRT_DMA INPUT_TABLET INPUT_TOUCHSCREEN IP_SCTP IRQ_TIME_ACCOUNTING L2TP LIBNVDIMM MEDIA_COMMON_OPTIONS MEDIA_DIGITAL_TV_SUPPORT MEDIA_RADIO_SUPPORT MEDIA_SDR_SUPPORT MEDIA_SUPPORT MEDIA_USB_SUPPORT MEMORY_HOTPLUG MEMORY_HOTREMOVE MFD_DLN2 MFD_RETU MMC MTD MTD_UBI NETFILTER_ADVANCED NETFILTER_CONNCOUNT NET_IPGRE NET_IPGRE_DEMUX NFS_V4_1 NF_CONNTRACK_SNMP NF_NAT_REDIRECT NF_NAT_SNMP_BASIC NF_NAT_TFTP NF_SOCKET_IPV4 NF_SOCKET_IPV6 NF_TPROXY_IPV4 NF_TPROXY_IPV6 NILFS2_FS NLMON NLS_CODEPAGE_1250 NLS_CODEPAGE_1251 NLS_CODEPAGE_737 NLS_CODEPAGE_775 NLS_CODEPAGE_850 NLS_CODEPAGE_852 NLS_CODEPAGE_855 NLS_CODEPAGE_857 NLS_CODEPAGE_860 NLS_CODEPAGE_861 NLS_CODEPAGE_862 NLS_CODEPAGE_863 NLS_CODEPAGE_864 NLS_CODEPAGE_865 NLS_CODEPAGE_866 NLS_CODEPAGE_869 NLS_CODEPAGE_874 NLS_CODEPAGE_932 NLS_CODEPAGE_936 NLS_CODEPAGE_949 NLS_CODEPAGE_950 NLS_ISO8859_13 NLS_ISO8859_14 NLS_ISO8859_15 NLS_ISO8859_2 NLS_ISO8859_3 NLS_ISO8859_4 NLS_ISO8859_5 NLS_ISO8859_6 NLS_ISO8859_7 NLS_ISO8859_8 NLS_ISO8859_9 NLS_KOI8_R NLS_KOI8_U NLS_MAC_CELTIC NLS_MAC_CENTEURO NLS_MAC_CROATIAN NLS_MAC_CYRILLIC NLS_MAC_GAELIC NLS_MAC_GREEK NLS_MAC_ICELAND NLS_MAC_INUIT NLS_MAC_ROMAN NLS_MAC_ROMANIAN NLS_MAC_TURKISH NLS_UCS2_UTILS NOP_USB_XCEIV NOZOMI NTFS3_FS NTFS3_FS_POSIX_ACL NTFS3_LZX_XPRESS NULL_TTY NUMA_BALANCING NUMA_BALANCING_DEFAULT_ENABLED NUMA_EMU NUMA_KEEP_MEMINFO NVDIMM_DAX NVDIMM_KEYS NVDIMM_PFN NVME_CORE NVME_FABRICS NVME_FC NVME_MULTIPATH NVME_RDMA NVME_TARGET NVME_TARGET_FC NVME_TARGET_FCLOOP NVME_TARGET_LOOP NVME_TARGET_RDMA NVME_TARGET_TCP NVME_TCP N_GSM N_HDLC OCFS2_DEBUG_FS OCFS2_FS OCFS2_FS_O2CB OCFS2_FS_STATS OCFS2_FS_USERSPACE_CLUSTER OF_GPIO OF_PMEM OMFS_FS OPENVSWITCH OPENVSWITCH_GENEVE OPENVSWITCH_GRE OPENVSWITCH_VXLAN ORANGEFS_FS OSF_PARTITION OVERLAY_FS OVERLAY_FS_DEBUG OVERLAY_FS_INDEX OVERLAY_FS_REDIRECT_ALWAYS_FOLLOW OVERLAY_FS_REDIRECT_DIR PACKET_DIAG PAGE_IDLE_FLAG PAGE_POOL PAGE_REPORTING PAHOLE_HAS_BTF_TAG PAHOLE_HAS_LANG_EXCLUDE PAHOLE_HAS_SPLIT_BTF PARPORT PARPORT_NOT_PC PARTITION_ADVANCED PCCARD PCCARD_NONSTATIC PCIEAER PCI_ENDPOINT PCI_IOV PCMCIA PCMCIA_LOAD_CIS PERCPU_STATS PERSISTENT_KEYRINGS PHONET PHYLINK PHY_CPCAP_USB PHY_QCOM_USB_HS PHY_QCOM_USB_HSIC PHY_SAMSUNG_USB2 PHY_TUSB1210 PKCS7_TEST_KEY PKCS8_PRIVATE_KEY_PARSER PM_CLK PNFS_BLOCK PNFS_FILE_LAYOUT PNFS_FLEXFILE_LAYOUT PPP PPPOATM PPPOE PPPOE_HASH_BITS_4 PPPOL2TP PPP_ASYNC PPP_BSDCOMP PPP_DEFLATE PPP_FILTER PPP_MPPE PPP_MULTILINK PPP_SYNC_TTY PPTP PREEMPT PREEMPT_NOTIFIERS PROC_CHILDREN PSI PSTORE PSTORE_COMPRESS QCOM_QMI_HELPERS QNX4FS_FS QNX6FS_FS QRTR QRTR_TUN R8712U RADIO_ADAPTERS RADIO_SHARK RADIO_SHARK2 RADIO_TEA575X RAID6_PQ RAID_ATTRS RC_ATI_REMOTE RC_CORE RC_DEVICES RDMA_RXE RDMA_SIW RDS RDS_RDMA RDS_TCP READ_ONLY_THP_FOR_FS REALTEK_AUTOPM REED_SOLOMON REED_SOLOMON_DEC8 REGMAP REGMAP_I2C REGMAP_IRQ REGMAP_MMIO REGMAP_SPI REGULATOR REGULATOR_TWL4030 REISERFS_FS REISERFS_FS_POSIX_ACL REISERFS_FS_SECURITY REISERFS_FS_XATTR REISERFS_PROC_INFO RESET_CONTROLLER RFKILL RFKILL_INPUT RFKILL_LEDS RMI4_2D_SENSOR RMI4_CORE RMI4_F03 RMI4_F03_SERIO RMI4_F11 RMI4_F12 RMI4_F30 ROMFS_BACKED_BY_BOTH ROMFS_FS ROMFS_ON_BLOCK ROMFS_ON_MTD ROSE RTC_DRV_HID_SENSOR_TIME RXKAD SCHED_CORE SCREEN_INFO SCSI_FC_ATTRS SCSI_HPSA SCSI_ISCSI_ATTRS SCSI_LOGGING SCSI_NETLINK SCSI_SAS_ATA SCSI_SAS_ATTRS SCSI_SAS_LIBSAS SCSI_SCAN_ASYNC SCSI_SRP_ATTRS SCTP_COOKIE_HMAC_MD5 SCTP_COOKIE_HMAC_SHA1 SCTP_DEFAULT_COOKIE_HMAC_MD5 SECONDARY_TRUSTED_KEYRING SECURITY_INFINIBAND SECURITY_NETWORK_XFRM SECURITY_SMACK_NETFILTER SERIAL_DEV_BUS SERIAL_DEV_CTRL_TTYPORT SERIAL_MCTRL_GPIO SGI_PARTITION SIGNATURE SIGNED_PE_FILE_VERIFICATION SKB_DECRYPTED SLHC SLIP SLIP_COMPRESSED SLIP_MODE_SLIP6 SLIP_SMART SMARTJOYPLUS_FF SMBFS SMC SMC_DIAG SMSC_PHY SMS_SIANO_MDTV SMS_SIANO_RC SMS_USB_DRV SND SND_ALOOP SND_BCD2000 SND_CTL_FAST_LOOKUP SND_CTL_LED SND_DEBUG SND_DMA_SGBUF SND_DRIVERS SND_DUMMY SND_DYNAMIC_MINORS SND_HDA SND_HDA_CODEC_ANALOG SND_HDA_CODEC_CA0110 SND_HDA_CODEC_CA0132 SND_HDA_CODEC_CIRRUS SND_HDA_CODEC_CMEDIA SND_HDA_CODEC_CONEXANT SND_HDA_CODEC_HDMI SND_HDA_CODEC_REALTEK SND_HDA_CODEC_SI3054 SND_HDA_CODEC_SIGMATEL SND_HDA_CODEC_VIA SND_HDA_COMPONENT SND_HDA_CORE SND_HDA_GENERIC SND_HDA_GENERIC_LEDS SND_HDA_HWDEP SND_HDA_I915 SND_HDA_INPUT_BEEP SND_HDA_INTEL SND_HDA_PATCH_LOADER SND_HDA_RECONFIG SND_HDA_SCODEC_COMPONENT SND_HRTIMER SND_HWDEP SND_INTEL_DSP_CONFIG SND_INTEL_NHLT SND_INTEL_SOUNDWIRE_ACPI SND_JACK SND_JACK_INPUT_DEV SND_MIXER_OSS SND_OSSEMUL SND_PCI SND_PCM SND_PCMCIA SND_PCM_OSS SND_PCM_OSS_PLUGINS SND_PCM_TIMER SND_PCM_XRUN_DEBUG SND_PROC_FS SND_RAWMIDI SND_SEQUENCER SND_SEQUENCER_OSS SND_SEQ_DEVICE SND_SEQ_DUMMY SND_SEQ_HRTIMER_DEFAULT SND_SEQ_MIDI SND_SEQ_MIDI_EVENT SND_SEQ_VIRMIDI SND_SOC SND_SOC_I2C_AND_SPI SND_SUPPORT_OLD_API SND_TIMER SND_USB SND_USB_6FIRE SND_USB_AUDIO SND_USB_AUDIO_USE_MEDIA_CONTROLLER SND_USB_CAIAQ SND_USB_CAIAQ_INPUT SND_USB_HIFACE SND_USB_LINE6 SND_USB_POD SND_USB_PODHD SND_USB_TONEPORT SND_USB_UA101 SND_USB_US122L SND_USB_USX2Y SND_USB_VARIAX SND_VERBOSE_PROCFS SND_VIRMIDI SND_VIRTIO SND_VMASTER SND_X86 SOCK_VALIDATE_XMIT SOFTLOCKUP_DETECTOR_INTR_STORM SOLARIS_X86_PARTITION SONY_FF SOUND SOUNDWIRE SOUND_OSS_CORE SOUND_OSS_CORE_PRECLAIM SPI SPI_DLN2 SPI_DYNAMIC SPI_MASTER SQUASHFS SQUASHFS_4K_DEVBLK_SIZE SQUASHFS_COMPILE_DECOMP_SINGLE SQUASHFS_DECOMP_SINGLE SQUASHFS_FILE_DIRECT SQUASHFS_LZ4 SQUASHFS_LZO SQUASHFS_XATTR SQUASHFS_XZ SQUASHFS_ZLIB SQUASHFS_ZSTD SSB SSB_PCIHOST_POSSIBLE SSB_PCMCIAHOST_POSSIBLE SSB_SDIOHOST_POSSIBLE STAGING STP STREAM_PARSER SUNRPC_BACKCHANNEL SUN_PARTITION SW_SYNC SYSFB SYSV68_PARTITION SYSV_FS TABLET_USB_ACECAD TABLET_USB_AIPTEK TABLET_USB_HANWANG TABLET_USB_KBTAB TABLET_USB_PEGASUS TAHVO_USB TAHVO_USB_HOST_BY_DEFAULT TASKS_TRACE_RCU TCG_CRB TCG_TIS TCG_TIS_CORE TCG_TPM TCG_TPM2_HMAC TCP_CONG_BBR TCP_CONG_BIC TCP_CONG_CDG TCP_CONG_DCTCP TCP_CONG_HSTCP TCP_CONG_HTCP TCP_CONG_HYBLA TCP_CONG_ILLINOIS TCP_CONG_LP TCP_CONG_NV TCP_CONG_SCALABLE TCP_CONG_VEGAS TCP_CONG_VENO TCP_CONG_WESTWOOD TCP_CONG_YEAH TEXTSEARCH TEXTSEARCH_BM TEXTSEARCH_FSM TEXTSEARCH_KMP THERMAL_NETLINK THP_SWAP THRUSTMASTER_FF TIPC TIPC_CRYPTO TIPC_DIAG TIPC_MEDIA_IB TIPC_MEDIA_UDP TLS TLS_TOE TMPFS_QUOTA TOUCHSCREEN_SUR40 TOUCHSCREEN_USB_3M TOUCHSCREEN_USB_COMPOSITE TOUCHSCREEN_USB_DMC_TSC10 TOUCHSCREEN_USB_E2I TOUCHSCREEN_USB_EASYTOUCH TOUCHSCREEN_USB_EGALAX TOUCHSCREEN_USB_ELO TOUCHSCREEN_USB_ETT_TC45USB TOUCHSCREEN_USB_ETURBO TOUCHSCREEN_USB_GENERAL_TOUCH TOUCHSCREEN_USB_GOTOP TOUCHSCREEN_USB_GUNZE TOUCHSCREEN_USB_IDEALTEK TOUCHSCREEN_USB_IRTOUCH TOUCHSCREEN_USB_ITM TOUCHSCREEN_USB_JASTEC TOUCHSCREEN_USB_NEXIO TOUCHSCREEN_USB_PANJIT TOUCHSCREEN_USB_ZYTRONIC TRANSPARENT_HUGEPAGE TRANSPARENT_HUGEPAGE_MADVISE TTPCI_EEPROM TTY_PRINTK TUN_VNET_CROSS_LE TWL4030_CORE TYPEC TYPEC_FUSB302 TYPEC_TCPCI TYPEC_TCPM TYPEC_TPS6598X TYPEC_UCSI UBIFS_ATIME_SUPPORT UBIFS_FS UBIFS_FS_ADVANCED_COMPR UBIFS_FS_LZO UBIFS_FS_SECURITY UBIFS_FS_XATTR UBIFS_FS_ZLIB UBIFS_FS_ZSTD UCSI_ACPI UDF_FS UDMABUF UFS_FS UFS_FS_WRITE UHID ULTRIX_PARTITION UNICODE UNIXWARE_DISKLABEL UNIX_DIAG USB4 USB4_NET USBIP_CORE USBIP_HOST USBIP_VHCI_HCD USBIP_VUDC USBPCWATCHDOG USB_ACM USB_ADUTUX USB_AIRSPY USB_ALI_M5632 USB_AN2720 USB_APPLEDISPLAY USB_ARMLINUX USB_BDC_UDC USB_BELKIN USB_C67X00_HCD USB_CATC USB_CDC_PHONET USB_CHAOSKEY USB_CHIPIDEA USB_CHIPIDEA_HOST USB_CHIPIDEA_PCI USB_DWC2 USB_GADGET USB_MUSB_HDRC USB_NET_CDC_SUBSET USB_ROLE_SWITCH USB_STORAGE_REALTEK USB_ULPI_BUS USB_USBNET VIDEO_DEV VXLAN WIRELESS WLAN ZONE_DEVICE] disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed picked [v6.9 v6.8 v6.7 v6.5 v6.3 v6.1 v5.19 v5.17 v5.14 v5.11 v5.8 v5.5 v5.2 v4.20 v4.19] out of 32 release tags 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: afcd213c2f061c68ada2f0f5d8ff63535fe15a118ffd9172d701cddb81e81ad1 all runs: crashed: INFO: task hung in nilfs_segctor_thread representative crash: INFO: task hung in nilfs_segctor_thread, 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: 8a7a8c1dc89a5398970a8410da1c5fd3f57fd928ca4fefc6c9fc650ca1b0cbf6 run #0: crashed: lost connection to test machine run #1: crashed: INFO: task hung in nilfs_segctor_thread run #2: crashed: INFO: task hung in nilfs_segctor_thread run #3: crashed: INFO: task hung in nilfs_segctor_thread run #4: crashed: INFO: task hung in nilfs_segctor_thread run #5: crashed: INFO: task hung in nilfs_segctor_thread run #6: crashed: INFO: task hung in nilfs_segctor_thread run #7: crashed: INFO: task hung in nilfs_segctor_thread run #8: crashed: INFO: task hung in nilfs_segctor_thread run #9: crashed: INFO: task hung in nilfs_segctor_thread representative crash: INFO: task hung in nilfs_segctor_thread, 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: 04e0c05647a3438ba565b1b4f0093b440705e2e29857876cbcbc369880252e18 all runs: crashed: INFO: task hung in nilfs_segctor_thread representative crash: INFO: task hung in nilfs_segctor_thread, types: [HANG] 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: 4779a13a7b41c8e56d84a3dcff12a4f276ed044210e4c31a7eb26b9b97d1822a all runs: crashed: INFO: task hung in nilfs_segctor_thread representative crash: INFO: task hung in nilfs_segctor_thread, 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: 7f676c35d149e4ee960cd2b577d224079ecd523bc7c722ca59cdfb25e36caee8 all runs: crashed: INFO: task hung in nilfs_segctor_thread representative crash: INFO: task hung in nilfs_segctor_thread, 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: 9ec3b35707729d09bb22fe83d72c9f1f201183cae2f31aa562310d41f6f7c6a8 all runs: crashed: INFO: task hung in nilfs_segctor_thread representative crash: INFO: task hung in nilfs_segctor_thread, 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: d5fe8822896ab4b3b71458e84593ec2c6aec16d7374576adb786d3cca4a399b2 all runs: crashed: INFO: task hung in nilfs_segctor_thread representative crash: INFO: task hung in nilfs_segctor_thread, 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: 2a16bee0cf2580866f494bba7f286d82cae2d8edb55bfaf403dfbaaa4791a9fc all runs: crashed: INFO: task hung in nilfs_segctor_thread representative crash: INFO: task hung in nilfs_segctor_thread, types: [HANG] testing release v5.14 testing commit 7d2a07b769330c34b4deabeed939325c77a7ec2f gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 76a27093803c9de38762f238fd7b478b1597efc7af28cca5e8cdbfbeab9d79b3 all runs: crashed: INFO: task hung in nilfs_segctor_thread representative crash: INFO: task hung in nilfs_segctor_thread, types: [HANG] testing release v5.11 testing commit f40ddce88593482919761f74910f42f4b84c004b gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 9497d290db425c874bf2bf76ab294b18e7a055bbcdb94a2fd1a11dc09e832c1d all runs: crashed: INFO: task hung in nilfs_segctor_thread representative crash: INFO: task hung in nilfs_segctor_thread, types: [HANG] testing release v5.8 testing commit bcf876870b95592b52519ed4aafcf9d95999bc9c gcc compiler: gcc (GCC) 8.4.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 5522ce280ebbb73d6b3dff2bda4a0a0f03d4b4ad2e20838cd173b253ec817fdf all runs: crashed: INFO: task hung in nilfs_segctor_thread representative crash: INFO: task hung in nilfs_segctor_thread, types: [HANG] testing release v5.5 testing commit d5226fa6dbae0569ee43ecfc08bdcd6770fc4755 gcc compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: d93d04f83fa9ebe19aac1920620be476f6f8d25c4fdcd55ab5a2027ebd4c1529 all runs: crashed: INFO: task hung in nilfs_segctor_thread representative crash: INFO: task hung in nilfs_segctor_thread, types: [HANG] testing release v5.2 testing commit 0ecfebd2b52404ae0c54a878c872bb93363ada36 gcc compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 82ae5ad48852632934c9bb98f3a95ac2352bf265daa8228580363dc0acb9c4e2 all runs: crashed: INFO: task hung in nilfs_segctor_thread representative crash: INFO: task hung in nilfs_segctor_thread, types: [HANG] testing release v4.20 testing commit 8fe28cb58bcb235034b64cbbb7550a8a43fd88be gcc compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 47d627f2728f38333f398cd61d3753e70389216004a0fb0f56c7ea1a50d5dd6a all runs: crashed: INFO: task hung in nilfs_segctor_thread representative crash: INFO: task hung in nilfs_segctor_thread, types: [HANG] testing release v4.19 testing commit 84df9525b0c27f3ebc2ebb1864fa62a97fdedb7d gcc compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 80e67be37ce72d117ff4d5d0cae6f08194ad7c39fdcfed445f74067ae2e041a4 all runs: crashed: INFO: task hung in nilfs_segctor_thread representative crash: INFO: task hung in nilfs_segctor_thread, types: [HANG] crash still not fixed/happens on the oldest tested release revisions tested: 22, total time: 3h37m32.727367353s (build: 1h10m48.387212839s, test: 2h19m49.294548626s) oldest tested release already had the bug or it had kernel test errors commit msg: Linux 4.19 crash: INFO: task hung in nilfs_segctor_thread NILFS error (device loop0): nilfs_check_page: bad entry in directory #12: rec_len is smaller than minimal - offset=43524096, inode=0, rec_len=0, name_len=0 NILFS error (device loop0): nilfs_check_page: bad entry in directory #12: rec_len is smaller than minimal - offset=43528192, inode=0, rec_len=0, name_len=0 NILFS error (device loop0): nilfs_check_page: bad entry in directory #12: rec_len is smaller than minimal - offset=43532288, inode=0, rec_len=0, name_len=0 NILFS error (device loop0): nilfs_check_page: bad entry in directory #12: rec_len is smaller than minimal - offset=43536384, inode=0, rec_len=0, name_len=0 INFO: task segctord:3853 blocked for more than 140 seconds. NILFS error (device loop0): nilfs_check_page: bad entry in directory #12: rec_len is smaller than minimal - offset=43540480, inode=0, rec_len=0, name_len=0 Not tainted 4.19.0-syzkaller #0 NILFS error (device loop0): nilfs_check_page: bad entry in directory #12: rec_len is smaller than minimal - offset=43544576, inode=0, rec_len=0, name_len=0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. NILFS error (device loop0): nilfs_check_page: bad entry in directory #12: rec_len is smaller than minimal - offset=43548672, inode=0, rec_len=0, name_len=0 segctord D15024 3853 2 0x80080000 NILFS error (device loop0): nilfs_check_page: bad entry in directory #12: rec_len is smaller than minimal - offset=43552768, inode=0, rec_len=0, name_len=0 Call Trace: NILFS error (device loop0): nilfs_check_page: bad entry in directory #12: rec_len is smaller than minimal - offset=43556864, inode=0, rec_len=0, name_len=0 context_switch kernel/sched/core.c:2825 [inline] __schedule+0x2f4/0x8d0 kernel/sched/core.c:3473 NILFS error (device loop0): nilfs_check_page: bad entry in directory #12: rec_len is smaller than minimal - offset=43560960, inode=0, rec_len=0, name_len=0 NILFS error (device loop0): nilfs_check_page: bad entry in directory #12: rec_len is smaller than minimal - offset=43565056, inode=0, rec_len=0, name_len=0 schedule+0x31/0x90 kernel/sched/core.c:3517 NILFS error (device loop0): nilfs_check_page: bad entry in directory #12: rec_len is smaller than minimal - offset=43569152, inode=0, rec_len=0, name_len=0 __rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:566 [inline] rwsem_down_write_failed+0x17c/0x2a0 kernel/locking/rwsem-xadd.c:595 NILFS error (device loop0): nilfs_check_page: bad entry in directory #12: rec_len is smaller than minimal - offset=43573248, inode=0, rec_len=0, name_len=0 call_rwsem_down_write_failed+0x17/0x30 arch/x86/lib/rwsem.S:117 NILFS error (device loop0): nilfs_check_page: bad entry in directory #12: rec_len is smaller than minimal - offset=43577344, inode=0, rec_len=0, name_len=0 __down_write arch/x86/include/asm/rwsem.h:142 [inline] down_write+0x3e/0x60 kernel/locking/rwsem.c:72 NILFS error (device loop0): nilfs_check_page: bad entry in directory #12: rec_len is smaller than minimal - offset=43581440, inode=0, rec_len=0, name_len=0 NILFS error (device loop0): nilfs_check_page: bad entry in directory #12: rec_len is smaller than minimal - offset=43585536, inode=0, rec_len=0, name_len=0 nilfs_transaction_lock+0xb2/0x220 fs/nilfs2/segment.c:362 NILFS error (device loop0): nilfs_check_page: bad entry in directory #12: rec_len is smaller than minimal - offset=43589632, inode=0, rec_len=0, name_len=0 nilfs_segctor_thread_construct fs/nilfs2/segment.c:2479 [inline] nilfs_segctor_thread+0x11f/0x380 fs/nilfs2/segment.c:2563 NILFS error (device loop0): nilfs_check_page: bad entry in directory #12: rec_len is smaller than minimal - offset=43593728, inode=0, rec_len=0, name_len=0 kthread+0x11c/0x140 kernel/kthread.c:246 NILFS error (device loop0): nilfs_check_page: bad entry in directory #12: rec_len is smaller than minimal - offset=43597824, inode=0, rec_len=0, name_len=0 NILFS error (device loop0): nilfs_check_page: bad entry in directory #12: rec_len is smaller than minimal - offset=43601920, inode=0, rec_len=0, name_len=0 NILFS error (device loop0): nilfs_check_page: bad entry in directory #12: rec_len is smaller than minimal - offset=43606016, inode=0, rec_len=0, name_len=0 ret_from_fork+0x35/0x40 arch/x86/entry/entry_64.S:413 NILFS error (device loop0): nilfs_check_page: bad entry in directory #12: rec_len is smaller than minimal - offset=43610112, inode=0, rec_len=0, name_len=0 Showing all locks held in the system: NILFS error (device loop0): nilfs_check_page: bad entry in directory #12: rec_len is smaller than minimal - offset=43614208, inode=0, rec_len=0, name_len=0 1 lock held by khungtaskd/561: NILFS error (device loop0): nilfs_check_page: bad entry in directory #12: rec_len is smaller than minimal - offset=43618304, inode=0, rec_len=0, name_len=0 #0: 0000000035ae3848 NILFS error (device loop0): nilfs_check_page: bad entry in directory #12: rec_len is smaller than minimal - offset=43622400, inode=0, rec_len=0, name_len=0 NILFS error (device loop0): nilfs_check_page: bad entry in directory #12: rec_len is smaller than minimal - offset=43626496, inode=0, rec_len=0, name_len=0 ( NILFS error (device loop0): nilfs_check_page: bad entry in directory #12: rec_len is smaller than minimal - offset=43630592, inode=0, rec_len=0, name_len=0 rcu_read_lock NILFS error (device loop0): nilfs_check_page: bad entry in directory #12: rec_len is smaller than minimal - offset=43634688, inode=0, rec_len=0, name_len=0 ){....}, at: debug_show_all_locks+0x23/0x10d kernel/locking/lockdep.c:4435 2 locks held by getty/1991: NILFS error (device loop0): nilfs_check_page: bad entry in directory #12: rec_len is smaller than minimal - offset=43638784, inode=0, rec_len=0, name_len=0 #0: 000000000f842417 (&tty->ldisc_sem){....}, at: ldsem_down_read+0xe/0x10 drivers/tty/tty_ldsem.c:353 #1: NILFS error (device loop0): nilfs_check_page: bad entry in directory #12: rec_len is smaller than minimal - offset=43642880, inode=0, rec_len=0, name_len=0 000000006c64e968 (&ldata->atomic_read_lock){....}, at: n_tty_read+0xbc/0x860 drivers/tty/n_tty.c:2140 8 locks held by syz-executor.0/3440: NILFS error (device loop0): nilfs_check_page: bad entry in directory #12: rec_len is smaller than minimal - offset=43646976, inode=0, rec_len=0, name_len=0 1 lock held by segctord/3853: #0: NILFS error (device loop0): nilfs_check_page: bad entry in directory #12: rec_len is smaller than minimal - offset=43651072, inode=0, rec_len=0, name_len=0 0000000094f5aae7 (&nilfs->ns_segctor_sem){....}, at: nilfs_transaction_lock+0xb2/0x220 fs/nilfs2/segment.c:362 NILFS error (device loop0): nilfs_check_page: bad entry in directory #12: rec_len is smaller than minimal - offset=43655168, inode=0, rec_len=0, name_len=0 ============================================= NILFS error (device loop0): nilfs_check_page: bad entry in directory #12: rec_len is smaller than minimal - offset=43659264, inode=0, rec_len=0, name_len=0 NMI backtrace for cpu 0 NILFS error (device loop0): nilfs_check_page: bad entry in directory #12: rec_len is smaller than minimal - offset=43663360, inode=0, rec_len=0, name_len=0 CPU: 0 PID: 561 Comm: khungtaskd Not tainted 4.19.0-syzkaller #0 NILFS error (device loop0): nilfs_check_page: bad entry in directory #12: rec_len is smaller than minimal - offset=43667456, inode=0, rec_len=0, name_len=0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 NILFS error (device loop0): nilfs_check_page: bad entry in directory #12: rec_len is smaller than minimal - offset=43671552, inode=0, rec_len=0, name_len=0 Call Trace: NILFS error (device loop0): nilfs_check_page: bad entry in directory #12: rec_len is smaller than minimal - offset=43675648, inode=0, rec_len=0, name_len=0 __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x89/0xba lib/dump_stack.c:113 NILFS error (device loop0): nilfs_check_page: bad entry in directory #12: rec_len is smaller than minimal - offset=43679744, inode=0, rec_len=0, name_len=0 nmi_cpu_backtrace.cold.0+0x14/0x53 lib/nmi_backtrace.c:101 NILFS error (device loop0): nilfs_check_page: bad entry in directory #12: rec_len is smaller than minimal - offset=43683840, inode=0, rec_len=0, name_len=0 nmi_trigger_cpumask_backtrace+0xc5/0xce lib/nmi_backtrace.c:62 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38 trigger_all_cpu_backtrace include/linux/nmi.h:144 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:204 [inline] watchdog+0x2c7/0x400 kernel/hung_task.c:265 kthread+0x11c/0x140 kernel/kthread.c:246 NILFS error (device loop0): nilfs_check_page: bad entry in directory #12: rec_len is smaller than minimal - offset=43687936, inode=0, rec_len=0, name_len=0 ret_from_fork+0x35/0x40 arch/x86/entry/entry_64.S:413 Sending NMI from CPU 0 to CPUs 1: NILFS error (device loop0): nilfs_check_page: bad entry in directory #12: rec_len is smaller than minimal - offset=43692032, inode=0, rec_len=0, name_len=0 NMI backtrace for cpu 1 CPU: 1 PID: 3440 Comm: syz-executor.0 Not tainted 4.19.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 RIP: 0010:io_serial_in+0x13/0x20 drivers/tty/serial/8250/8250_port.c:449 Code: 89 e5 d3 e6 48 63 f6 48 03 77 40 8b 06 5d c3 0f 1f 84 00 00 00 00 00 0f b6 8f e1 00 00 00 55 8b 57 38 48 89 e5 d3 e6 01 f2 ec <0f> b6 c0 5d c3 0f 1f 84 00 00 00 00 00 0f b6 8f e1 00 00 00 89 d0 RSP: 0018:ffffc900018efb10 EFLAGS: 00000006 RAX: ffffffff816ede05 RBX: 0000000000000001 RCX: 0000000000000000 RDX: 00000000000003f9 RSI: 0000000000000001 RDI: ffffffff8428f300 RBP: ffffc900018efb10 R08: 0000000000000008 R09: 00000000a665b761 R10: 0000000000000000 R11: ffff880138ab6770 R12: ffffffff838ee540 R13: 00000000000000ab R14: 0000000000000000 R15: ffffffff8428f300 FS: 00007fb595b8e480(0000) GS:ffff88013bb00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fb595bb7918 CR3: 00000001334c4000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: serial_port_in include/linux/serial_core.h:268 [inline] serial8250_console_write+0xcb/0x2b0 drivers/tty/serial/8250/8250_port.c:3252 univ8250_console_write+0x1c/0x20 drivers/tty/serial/8250/8250_core.c:590 call_console_drivers kernel/printk/printk.c:1724 [inline] console_unlock kernel/printk/printk.c:2405 [inline] console_unlock+0x3d6/0x5a0 kernel/printk/printk.c:2305 vprintk_emit+0x215/0x2a0 kernel/printk/printk.c:1922 vprintk_default+0x1a/0x20 kernel/printk/printk.c:1963 vprintk_func+0x4c/0xc5 kernel/printk/printk_safe.c:398 printk+0x53/0x6a kernel/printk/printk.c:1996 __nilfs_error+0x7f/0x13f fs/nilfs2/super.c:125 nilfs_check_page fs/nilfs2/dir.c:172 [inline] nilfs_get_page.isra.2+0x16c/0x2c0 fs/nilfs2/dir.c:197 nilfs_empty_dir+0x4b/0x180 fs/nilfs2/dir.c:630 nilfs_rmdir+0x5f/0xe0 fs/nilfs2/namei.c:323 vfs_rmdir fs/namei.c:3880 [inline] vfs_rmdir+0x7d/0x150 fs/namei.c:3859 do_rmdir+0x1b6/0x210 fs/namei.c:3941 __do_sys_unlinkat fs/namei.c:4103 [inline] __se_sys_unlinkat+0x2f/0x40 fs/namei.c:4097 __x64_sys_unlinkat+0x15/0x20 fs/namei.c:4097 do_syscall_64+0x69/0x170 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7fb5942446c7 Code: 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 07 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffc0fb4f3a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000107 RAX: ffffffffffffffda RBX: 0000000000000064 RCX: 00007fb5942446c7 RDX: 0000000000000200 RSI: 00007ffc0fb50550 RDI: 00000000ffffff9c RBP: 00007fb594290336 R08: 00007fb595ba78fb R09: 0000000000000000 R10: 0000000000001000 R11: 0000000000000246 R12: 00007ffc0fb50550 R13: 00007fb594290336 R14: 00007fb595b8e430 R15: 0000000000000008