ci starts bisection 2023-11-03 07:07:20.981835135 +0000 UTC m=+12256.034955071 bisecting cause commit starting from 2dac75696c6da3c848daa118a729827541c89d33 building syzkaller on 342b9c5594e85819665af37b55afe27d0731379f fetch other tags and check if the commit is present ensuring issue is reproducible on original commit 2dac75696c6da3c848daa118a729827541c89d33 testing commit 2dac75696c6da3c848daa118a729827541c89d33 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 2bb078779def5b12e620da71021a969dabde8a74d40b0d7e9acf064ba1dc79ae run #0: crashed: KASAN: slab-use-after-free Read in reweight_entity run #1: crashed: INFO: task hung in fat_write_inode run #2: crashed: INFO: task hung in fat_write_inode run #3: crashed: INFO: task hung in fat_write_inode run #4: crashed: INFO: task hung in fat_write_inode run #5: crashed: INFO: task hung in fat_write_inode run #6: crashed: INFO: task hung in fat_write_inode run #7: crashed: INFO: task hung in fat_write_inode run #8: crashed: INFO: task hung in fat_write_inode run #9: crashed: INFO: task hung in fat_write_inode run #10: crashed: INFO: task hung in fat_write_inode run #11: crashed: INFO: task hung in fat_write_inode run #12: crashed: INFO: task hung in fat_write_inode run #13: crashed: INFO: task hung in fat_write_inode run #14: crashed: INFO: task hung in fat_write_inode run #15: crashed: INFO: task hung in fat_write_inode run #16: crashed: INFO: task hung in fat_write_inode run #17: crashed: INFO: task hung in fat_write_inode run #18: crashed: INFO: task hung in fat_write_inode run #19: crashed: INFO: task hung in fat_write_inode representative crash: INFO: task hung in fat_write_inode, types: [HANG] check whether we can drop unnecessary instrumentation disabling configs for [BUG KASAN LOCKDEP ATOMIC_SLEEP LEAK UBSAN], they are not needed testing commit 2dac75696c6da3c848daa118a729827541c89d33 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c6a9b85abd9895ca63ffcb3d1a4a81d7fb9accf87915b46ff99432ea20cf5805 all runs: crashed: INFO: task hung in fat_write_inode representative crash: INFO: task hung in fat_write_inode, 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=3938 full=7720 leaves diff=1995 split chunks (needed=false): <1995> split chunk #0 of len 1995 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 2dac75696c6da3c848daa118a729827541c89d33 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 567c1bd06c93e04816fcd25efa242bb1c2500e4ce798acee082da9bfbf7ad480 run #0: crashed: INFO: task hung in corrupted run #1: crashed: INFO: task hung in fat_write_inode run #2: crashed: INFO: task hung in fat_write_inode run #3: crashed: INFO: task hung in fat_write_inode run #4: crashed: INFO: task hung in fat_write_inode run #5: crashed: INFO: task hung in fat_write_inode run #6: crashed: INFO: task hung in fat_write_inode run #7: crashed: INFO: task hung in fat_write_inode run #8: crashed: INFO: task hung in fat_write_inode run #9: crashed: INFO: task hung in fat_write_inode representative crash: INFO: task hung in corrupted, 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 2dac75696c6da3c848daa118a729827541c89d33 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a42b792aba8a14dc810f2609eab720d48bc8cbfed7b086bcc46b3162be424e4e all runs: crashed: INFO: task hung in fat_write_inode representative crash: INFO: task hung in fat_write_inode, 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 2dac75696c6da3c848daa118a729827541c89d33 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 58434eb88dec73097d7de48539d664a9c07a17859396872e7b3d112c98fbc41a run #0: crashed: INFO: task hung in corrupted run #1: crashed: INFO: task hung in fat_write_inode run #2: crashed: INFO: task hung in fat_write_inode run #3: crashed: INFO: task hung in fat_write_inode run #4: crashed: INFO: task hung in fat_write_inode run #5: crashed: INFO: task hung in fat_write_inode run #6: crashed: INFO: task hung in fat_write_inode run #7: crashed: INFO: task hung in fat_write_inode run #8: crashed: INFO: task hung in fat_write_inode run #9: crashed: INFO: task hung in fat_write_inode representative crash: INFO: task hung in corrupted, 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 2dac75696c6da3c848daa118a729827541c89d33 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6ed31a82da3278e51f2b2dc39057f0defda21fb2e72b17d2e0b16eb634ac8404 all runs: OK false negative chance: 0.000 testing without sub-chunk 5/5 disabling configs for [ATOMIC_SLEEP LEAK UBSAN BUG KASAN LOCKDEP], they are not needed testing commit 2dac75696c6da3c848daa118a729827541c89d33 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 5da2a3e7bd7e6e99f0151385024f819360aac767cc6ed9b6ff62c2bcca5365f9 all runs: crashed: INFO: task hung in fat_write_inode representative crash: INFO: task hung in fat_write_inode, types: [HANG] the chunk can be dropped minimized to 399 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 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_CONNCOUNT NET_IPGRE NET_IPGRE_DEMUX NFS_V4_1 NF_TABLES NF_TABLES_ARP 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 NTFS_FS NTFS_RW 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_INDEX OVERLAY_FS_REDIRECT_ALWAYS_FOLLOW OVERLAY_FS_REDIRECT_DIR PACKET_DIAG PADATA PAGE_IDLE_FLAG PAGE_POOL PAGE_REPORTING 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 PRISM2_USB 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 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 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 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 SERIAL_DEV_BUS SERIAL_DEV_CTRL_TTYPORT SERIAL_MCTRL_GPIO SGI_PARTITION SIGNATURE SIGNED_PE_FILE_VERIFICATION 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_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_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 SOLARIS_X86_PARTITION SONY_FF SOUND 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 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 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_CHIPIDEA_UDC USB_CONFIGFS USB_CONFIGFS_ACM USB_CONFIGFS_ECM USB_CONFIGFS_ECM_SUBSET USB_CONFIGFS_EEM USB_CONFIGFS_F_FS USB_CONFIGFS_F_HID USB_CONFIGFS_F_LB_SS 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 [ATOMIC_SLEEP LEAK UBSAN BUG KASAN LOCKDEP], they are not needed picked [v6.5 v6.4 v6.3 v6.1 v5.19 v5.17 v5.15 v5.13 v5.10 v5.7 v5.4 v5.1 v4.19] out of 28 release tags testing release v6.5 testing commit 2dde18cd1d8fac735875f2e4987f11817cc0bc2c gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 05760b76c8a717d0c434221d3b278d2321a98388e243dfd6ad163f32090ffd15 all runs: OK false negative chance: 0.000 # git bisect start 2dac75696c6da3c848daa118a729827541c89d33 2dde18cd1d8fac735875f2e4987f11817cc0bc2c Bisecting: 14030 revisions left to test after this (roughly 14 steps) [cefc06e4de1477dbdc3cb2a91d4b1873b7797a5c] Merge tag 'i2c-for-6.6-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux testing commit cefc06e4de1477dbdc3cb2a91d4b1873b7797a5c gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 8bdb3feb4993911720cd73f31254b9a49e101e50726842330ddd26f8703330a7 all runs: OK false negative chance: 0.000 # git bisect good cefc06e4de1477dbdc3cb2a91d4b1873b7797a5c Bisecting: 7027 revisions left to test after this (roughly 13 steps) [13aa80aac95019f37974affdf88f59eb1e634f40] Merge branch 'master' of git://linuxtv.org/mchehab/media-next.git testing commit 13aa80aac95019f37974affdf88f59eb1e634f40 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 5399068a1659d5ec19e0eb313b6ac6e05f1dc050b5c33e3fda3b849db248785b all runs: crashed: INFO: task hung in fat_write_inode representative crash: INFO: task hung in fat_write_inode, types: [HANG] # git bisect bad 13aa80aac95019f37974affdf88f59eb1e634f40 Bisecting: 4028 revisions left to test after this (roughly 12 steps) [c37461e9a464c07f9096a1180ea38cedd51a62bd] Merge branch 'xtensa-for-next' of git://github.com/jcmvbkbc/linux-xtensa.git testing commit c37461e9a464c07f9096a1180ea38cedd51a62bd gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d0c0fc4a6c398f9cd8ab55ab5c7e9d94160a6a7be89fcc6060745b8b4271cb5b all runs: crashed: INFO: task hung in fat_write_inode representative crash: INFO: task hung in fat_write_inode, types: [HANG] # git bisect bad c37461e9a464c07f9096a1180ea38cedd51a62bd Bisecting: 1491 revisions left to test after this (roughly 11 steps) [12b78d6216c4db13749c004f319878a1393753f2] Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild.git testing commit 12b78d6216c4db13749c004f319878a1393753f2 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: bde2524e5c02a50bb498f8666315f8d81caf3a0975d1eae7e52b7332b80d2890 run #0: crashed: INFO: task hung in fat_write_inode run #1: crashed: INFO: task hung in corrupted run #2: crashed: INFO: task hung in fat_write_inode run #3: crashed: INFO: task hung in fat_write_inode run #4: crashed: INFO: task hung in fat_write_inode run #5: crashed: INFO: task hung in fat_write_inode run #6: crashed: INFO: task hung in fat_write_inode run #7: crashed: INFO: task hung in fat_write_inode run #8: crashed: INFO: task hung in fat_write_inode run #9: crashed: INFO: task hung in fat_write_inode representative crash: INFO: task hung in fat_write_inode, types: [HANG] # git bisect bad 12b78d6216c4db13749c004f319878a1393753f2 Bisecting: 741 revisions left to test after this (roughly 10 steps) [5e24617f6686e28e8db246db366abd1eb7953c92] Merge tag 'qcom-arm64-fixes-for-6.6' of https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux into arm/fixes testing commit 5e24617f6686e28e8db246db366abd1eb7953c92 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 2368953b8e74034fe748a67c29d9eaca89ca7738123ae662915d2ace1d7d34cc all runs: OK false negative chance: 0.000 # git bisect good 5e24617f6686e28e8db246db366abd1eb7953c92 Bisecting: 370 revisions left to test after this (roughly 9 steps) [9855439e95f5e6f749bff48fa8350683738c1801] Docs/admin-guide/mm/damon/usage: update for tried regions update time interval testing commit 9855439e95f5e6f749bff48fa8350683738c1801 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: efe252d05b7e78bc3986002c4d5c8f27ae5af0107a4f41950e6fbf5107c7146c all runs: OK false negative chance: 0.000 # git bisect good 9855439e95f5e6f749bff48fa8350683738c1801 Bisecting: 188 revisions left to test after this (roughly 8 steps) [b3e71774476b3cc16ebccc500f33f0fcbb509ced] Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest.git testing commit b3e71774476b3cc16ebccc500f33f0fcbb509ced gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 53f44cae85d3430354b9050705f534e84febde9f6c90417d67ce46f6d2d2c3eb all runs: OK false negative chance: 0.000 # git bisect good b3e71774476b3cc16ebccc500f33f0fcbb509ced Bisecting: 91 revisions left to test after this (roughly 7 steps) [98b94b1d8a341b00e421ec3f42166a028854a8cd] Merge branch 'mm-nonmm-stable' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm testing commit 98b94b1d8a341b00e421ec3f42166a028854a8cd gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 5842c209d080c82edf98b2fad4a3cae9598e07ec6d4f5582ba4addb904f872ba all runs: OK false negative chance: 0.000 # git bisect good 98b94b1d8a341b00e421ec3f42166a028854a8cd Bisecting: 45 revisions left to test after this (roughly 6 steps) [bf26855b230ddbb2fca2cc0d2bc065b06f00b176] mm: tune PCP high automatically testing commit bf26855b230ddbb2fca2cc0d2bc065b06f00b176 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 7ee8cd1ff0727ebfad0b324ff649f4416339bf520780a44b484d9dd1d750c8b3 all runs: crashed: INFO: task hung in fat_write_inode representative crash: INFO: task hung in fat_write_inode, types: [HANG] # git bisect bad bf26855b230ddbb2fca2cc0d2bc065b06f00b176 Bisecting: 22 revisions left to test after this (roughly 5 steps) [ee57c4c9ebf56385a0896b43009309cda63d6bdf] ntfs: convert ntfs_prepare_pages_for_non_resident_write() to folios testing commit ee57c4c9ebf56385a0896b43009309cda63d6bdf gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 2cd4601fc811f4d4c324578dc3cd3ef2f716918013811695076ade8483df913d all runs: crashed: INFO: task hung in fat_write_inode representative crash: INFO: task hung in fat_write_inode, types: [HANG] # git bisect bad ee57c4c9ebf56385a0896b43009309cda63d6bdf Bisecting: 11 revisions left to test after this (roughly 4 steps) [371dec564c37f086f82c3688222b2f5db4c8a9e2] gfs2: convert gfs2_getbuf() to folios testing commit 371dec564c37f086f82c3688222b2f5db4c8a9e2 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b97ad58fe6960facd78cba08e6696e9086e4d31c52d0cb6a360d09ab2be31335 all runs: crashed: INFO: task hung in fat_write_inode representative crash: INFO: task hung in fat_write_inode, types: [HANG] # git bisect bad 371dec564c37f086f82c3688222b2f5db4c8a9e2 Bisecting: 5 revisions left to test after this (roughly 3 steps) [fb96458067a8043c256befe4bfe4fb3ebc81de1b] buffer: return bool from grow_dev_folio() testing commit fb96458067a8043c256befe4bfe4fb3ebc81de1b gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: bcb8a39736409f5ab503afa74fc27547ac77bcdbc5a11456c61a34d0c1bc558d all runs: crashed: INFO: task hung in fat_write_inode representative crash: INFO: task hung in fat_write_inode, types: [HANG] # git bisect bad fb96458067a8043c256befe4bfe4fb3ebc81de1b Bisecting: 2 revisions left to test after this (roughly 1 step) [559d6021a56c57ccc729376671bc9f6fc9479b4c] mm: update memfd seal write check to include F_SEAL_WRITE testing commit 559d6021a56c57ccc729376671bc9f6fc9479b4c gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 76bfb0d357563ac4179d8159acb3b733f17efc60c66db6f9780e89aa2983dce1 all runs: OK false negative chance: 0.000 # git bisect good 559d6021a56c57ccc729376671bc9f6fc9479b4c Bisecting: 0 revisions left to test after this (roughly 1 step) [0f44d8a3a625d3e366e0b4abd19b821db46eeec3] mm: perform the mapping_map_writable() check after call_mmap() testing commit 0f44d8a3a625d3e366e0b4abd19b821db46eeec3 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 199cc39805ec2abd1a4db1d77a764ca27e7340061f40104fbc5323af6fc0f2d2 all runs: OK false negative chance: 0.000 # git bisect good 0f44d8a3a625d3e366e0b4abd19b821db46eeec3 fb96458067a8043c256befe4bfe4fb3ebc81de1b is the first bad commit commit fb96458067a8043c256befe4bfe4fb3ebc81de1b Author: Matthew Wilcox (Oracle) Date: Mon Oct 16 21:10:48 2023 +0100 buffer: return bool from grow_dev_folio() Patch series "Finish the create_empty_buffers() transition", v2. Pankaj recently added folio_create_empty_buffers() as the folio equivalent to create_empty_buffers(). This patch set finishes the conversion by first converting all remaining filesystems to call folio_create_empty_buffers(), then renaming it back to create_empty_buffers(). I took the opportunity to make a few simplifications like making folio_create_empty_buffers() return the head buffer and extracting get_nth_bh() from nilfs2. A few of the patches in this series aren't directly related to create_empty_buffers(), but I saw them while I was working on this and thought they'd be easy enough to add to this series. Compile-tested only, other than ext4. This patch (of 27): Rename grow_dev_page() to grow_dev_folio() and make it return a bool. Document what that bool means; it's more subtle than it first appears. Also rename the 'failed' label to 'unlock' beacuse it's not exactly 'failed'. It just hasn't succeeded. Link: https://lkml.kernel.org/r/20231016201114.1928083-1-willy@infradead.org Link: https://lkml.kernel.org/r/20231016201114.1928083-2-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) Cc: Matthew Wilcox Cc: Pankaj Raghav Cc: Andreas Gruenbacher Cc: Ryusuke Konishi Signed-off-by: Andrew Morton fs/buffer.c | 39 ++++++++++++++++++++++----------------- 1 file changed, 22 insertions(+), 17 deletions(-) accumulated error probability: 0.00 culprit signature: bcb8a39736409f5ab503afa74fc27547ac77bcdbc5a11456c61a34d0c1bc558d parent signature: 199cc39805ec2abd1a4db1d77a764ca27e7340061f40104fbc5323af6fc0f2d2 revisions tested: 22, total time: 5h18m55.628542805s (build: 1h56m26.429985416s, test: 3h5m7.069712197s) first bad commit: fb96458067a8043c256befe4bfe4fb3ebc81de1b buffer: return bool from grow_dev_folio() recipients (to): ["akpm@linux-foundation.org" "linux-kernel@vger.kernel.org" "willy@infradead.org"] recipients (cc): ["brauner@kernel.org" "linux-fsdevel@vger.kernel.org" "viro@zeniv.linux.org.uk"] crash: INFO: task hung in fat_write_inode INFO: task kworker/u4:5:1109 blocked for more than 143 seconds. Not tainted 6.6.0-rc4-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/u4:5 state:D stack:13264 pid:1109 ppid:2 flags:0x00004000 Workqueue: writeback wb_workfn (flush-7:0) Call Trace: context_switch kernel/sched/core.c:5382 [inline] __schedule+0x405/0x1460 kernel/sched/core.c:6695 schedule+0x59/0xa0 kernel/sched/core.c:6771 schedule_preempt_disabled+0x1b/0xa0 kernel/sched/core.c:6830 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0x53b/0x9e0 kernel/locking/mutex.c:747 fat_write_inode fs/fat/inode.c:910 [inline] fat_write_inode+0x37/0x60 fs/fat/inode.c:903 write_inode fs/fs-writeback.c:1456 [inline] __writeback_single_inode+0x30d/0x3e0 fs/fs-writeback.c:1673 writeback_sb_inodes+0x1fb/0x500 fs/fs-writeback.c:1899 __writeback_inodes_wb+0x47/0xe0 fs/fs-writeback.c:1970 wb_writeback+0x2b4/0x350 fs/fs-writeback.c:2077 wb_check_background_flush fs/fs-writeback.c:2147 [inline] wb_do_writeback fs/fs-writeback.c:2235 [inline] wb_workfn+0x2f1/0x550 fs/fs-writeback.c:2262 process_one_work+0x208/0x4c0 kernel/workqueue.c:2630 process_scheduled_works kernel/workqueue.c:2703 [inline] worker_thread+0x1c3/0x380 kernel/workqueue.c:2784 kthread+0xde/0x110 kernel/kthread.c:388 ret_from_fork+0x2c/0x40 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304 Showing all locks held in the system: 1 lock held by khungtaskd/28: #0: ffffffff831794c0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:303 [inline] #0: ffffffff831794c0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:749 [inline] #0: ffffffff831794c0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x36/0x120 kernel/locking/lockdep.c:6613 4 locks held by kworker/u4:5/1109: #0: ffff888140e7cd38 ((wq_completion)writeback){....}-{0:0}, at: process_one_work+0x1a2/0x4c0 kernel/workqueue.c:2605 #1: ffffc90002a9fe50 ((work_completion)(&(&wb->dwork)->work)){....}-{0:0}, at: process_one_work+0x1a2/0x4c0 kernel/workqueue.c:2605 #2: ffff8881026910e0 (&type->s_umount_key#47){....}-{3:3}, at: super_trylock_shared+0x15/0x50 fs/super.c:610 #3: ffff88810e14a1d0 (&sbi->s_lock){....}-{3:3}, at: fat_write_inode fs/fat/inode.c:910 [inline] #3: ffff88810e14a1d0 (&sbi->s_lock){....}-{3:3}, at: fat_write_inode+0x37/0x60 fs/fat/inode.c:903 2 locks held by getty/1672: #0: ffff888102ac20a0 (&tty->ldisc_sem){....}-{0:0}, at: tty_ldisc_ref_wait+0x23/0x50 drivers/tty/tty_ldisc.c:243 #1: ffffc900011fb2f0 (&ldata->atomic_read_lock){....}-{3:3}, at: n_tty_read+0x519/0x650 drivers/tty/n_tty.c:2206 4 locks held by syz-executor.0/2655: 1 lock held by syz-executor.0/1403: ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.6.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x3d/0x60 lib/dump_stack.c:106 nmi_cpu_backtrace+0xcc/0x110 lib/nmi_backtrace.c:113 nmi_trigger_cpumask_backtrace+0xd1/0x130 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline] watchdog+0x615/0x640 kernel/hung_task.c:379 kthread+0xde/0x110 kernel/kthread.c:388 ret_from_fork+0x2c/0x40 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 15 Comm: ksoftirqd/0 Not tainted 6.6.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023 RIP: 0010:hlock_class kernel/locking/lockdep.c:228 [inline] RIP: 0010:__lock_acquire.constprop.0+0x490/0x540 kernel/locking/lockdep.c:5132 Code: ff 0f b7 c9 39 4c 24 58 0f 8e 1f fe ff ff e8 b7 a2 6a 00 31 c0 eb 87 0f b7 45 f8 66 25 ff 1f 0f b7 c0 48 0f a3 05 10 00 c2 02 <0f> 82 3a fd ff ff 8b 15 9c 49 5e 03 85 d2 0f 85 2c fd ff ff e8 87 RSP: 0018:ffffc900000cbc08 EFLAGS: 00000003 RAX: 00000000000000c1 RBX: 0000000000000000 RCX: 0000000000000001 RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffff888101e4c1d0 R08: 0000000000080001 R09: ffff888101e4c1a8 R10: 0000000000080000 R11: 0000000000000001 R12: 0000000000080001 R13: 0000000000000000 R14: ffff888101e4b780 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff88813bc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f4245c1f000 CR3: 0000000003047000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_acquire kernel/locking/lockdep.c:5753 [inline] lock_acquire+0xab/0x180 kernel/locking/lockdep.c:5718 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x32/0x50 kernel/locking/spinlock.c:162 __debug_check_no_obj_freed lib/debugobjects.c:1020 [inline] debug_check_no_obj_freed+0xb0/0x250 lib/debugobjects.c:1063 slab_free_hook mm/slub.c:1775 [inline] slab_free_freelist_hook.constprop.0+0xf4/0x180 mm/slub.c:1826 slab_free mm/slub.c:3809 [inline] kmem_cache_free+0xde/0x460 mm/slub.c:3831 rcu_do_batch kernel/rcu/tree.c:2139 [inline] rcu_core+0x4f2/0x750 kernel/rcu/tree.c:2403 __do_softirq+0x12e/0x309 kernel/softirq.c:553 run_ksoftirqd kernel/softirq.c:921 [inline] run_ksoftirqd+0x25/0x30 kernel/softirq.c:913 smpboot_thread_fn+0x175/0x210 kernel/smpboot.c:164 kthread+0xde/0x110 kernel/kthread.c:388 ret_from_fork+0x2c/0x40 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304