ci starts bisection 2023-08-20 14:12:03.951793408 +0000 UTC m=+176288.669155399 bisecting fixing commit since 929ed21dfdb6ee94391db51c9eedb63314ef6847 building syzkaller on a4ae4f428721da42ac15f07d6f3b54584dedee27 ensuring issue is reproducible on original commit 929ed21dfdb6ee94391db51c9eedb63314ef6847 testing commit 929ed21dfdb6ee94391db51c9eedb63314ef6847 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 321d37ffda1c76b487e32a58de76c1cbb5e69e52f595d63e2ff8e630cf371b08 run #0: crashed: kernel BUG in folio_end_writeback run #1: crashed: kernel BUG in folio_end_writeback run #2: crashed: kernel BUG in end_buffer_async_write run #3: crashed: kernel BUG in end_buffer_async_write run #4: crashed: kernel BUG in folio_end_writeback run #5: crashed: kernel BUG in end_buffer_async_write run #6: crashed: kernel BUG in folio_end_writeback run #7: crashed: kernel BUG in end_buffer_async_write run #8: crashed: kernel BUG in folio_end_writeback run #9: crashed: kernel BUG in end_buffer_async_write run #10: crashed: kernel BUG in folio_end_writeback run #11: crashed: kernel BUG in folio_end_writeback run #12: crashed: kernel BUG in folio_end_writeback run #13: crashed: kernel BUG in folio_end_writeback run #14: crashed: kernel BUG in folio_end_writeback run #15: crashed: kernel BUG in folio_end_writeback run #16: crashed: kernel BUG in folio_end_writeback run #17: crashed: kernel BUG in folio_end_writeback run #18: crashed: kernel BUG in end_buffer_async_write run #19: crashed: kernel BUG in folio_end_writeback representative crash: kernel BUG in folio_end_writeback, types: [BUG] check whether we can drop unnecessary instrumentation disabling configs for [LEAK UBSAN KASAN LOCKDEP ATOMIC_SLEEP HANG], they are not needed testing commit 929ed21dfdb6ee94391db51c9eedb63314ef6847 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 06f613ea982ac82fc839448e38608eb21518cc0612de5ba3467d6990cfde5e21 run #0: crashed: kernel BUG in end_buffer_async_write run #1: crashed: kernel BUG in folio_end_writeback run #2: crashed: kernel BUG in end_buffer_async_write run #3: crashed: kernel BUG in end_buffer_async_write run #4: crashed: kernel BUG in folio_end_writeback run #5: crashed: kernel BUG in end_buffer_async_write run #6: crashed: kernel BUG in end_buffer_async_write run #7: crashed: kernel BUG in end_buffer_async_write run #8: crashed: kernel BUG in end_buffer_async_write run #9: crashed: kernel BUG in folio_end_writeback representative crash: kernel BUG in end_buffer_async_write, types: [BUG] the bug reproduces without the instrumentation disabling configs for [HANG LEAK UBSAN KASAN LOCKDEP ATOMIC_SLEEP], they are not needed kconfig minimization: base=3883 full=7594 leaves diff=1999 split chunks (needed=false): <1999> split chunk #0 of len 1999 into 5 parts testing without sub-chunk 1/5 disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN KASAN], they are not needed testing commit 929ed21dfdb6ee94391db51c9eedb63314ef6847 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 58bef57dc5e408d2cbf3002b524688639d2ec0cb15965d6d508ea880d4ed171b run #0: crashed: kernel BUG in end_buffer_async_write run #1: crashed: kernel BUG in end_buffer_async_write run #2: crashed: kernel BUG in end_buffer_async_write run #3: crashed: kernel BUG in folio_end_writeback run #4: crashed: kernel BUG in folio_end_writeback run #5: crashed: kernel BUG in folio_end_writeback run #6: crashed: kernel BUG in folio_end_writeback run #7: crashed: kernel BUG in end_buffer_async_write run #8: crashed: kernel BUG in folio_end_writeback run #9: crashed: kernel BUG in end_buffer_async_write representative crash: kernel BUG in end_buffer_async_write, types: [BUG] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed testing commit 929ed21dfdb6ee94391db51c9eedb63314ef6847 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6b8143f63b808f3251b6aa231cfe0f23bed995f3ec13b3d9f07eeee4d408adb9 run #0: crashed: kernel BUG in folio_end_writeback run #1: crashed: kernel BUG in end_buffer_async_write run #2: crashed: kernel BUG in folio_end_writeback run #3: crashed: kernel BUG in end_buffer_async_write run #4: crashed: kernel BUG in end_buffer_async_write run #5: crashed: kernel BUG in end_buffer_async_write run #6: crashed: kernel BUG in end_buffer_async_write run #7: crashed: kernel BUG in folio_end_writeback run #8: crashed: kernel BUG in end_buffer_async_write run #9: crashed: kernel BUG in end_buffer_async_write representative crash: kernel BUG in folio_end_writeback, types: [BUG] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [HANG LEAK UBSAN KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit 929ed21dfdb6ee94391db51c9eedb63314ef6847 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 63628475b4e57747aa1ae325a2f77da8cdc566a805946fdd54351bfd90d296e9 run #0: crashed: kernel BUG in folio_end_writeback run #1: crashed: kernel BUG in end_buffer_async_write run #2: crashed: kernel BUG in folio_end_writeback run #3: crashed: kernel BUG in end_buffer_async_write run #4: crashed: kernel BUG in folio_end_writeback run #5: crashed: kernel BUG in folio_end_writeback run #6: crashed: kernel BUG in folio_end_writeback run #7: crashed: kernel BUG in end_buffer_async_write run #8: crashed: kernel BUG in end_buffer_async_write run #9: crashed: kernel BUG in folio_end_writeback representative crash: kernel BUG in folio_end_writeback, types: [BUG] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [HANG LEAK UBSAN KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit 929ed21dfdb6ee94391db51c9eedb63314ef6847 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 4d8525f8218db1532fd315de4fd31186990e81282939dbed0b3ad50db9de9657 all runs: OK false negative chance: 0.000 testing without sub-chunk 5/5 disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN KASAN], they are not needed testing commit 929ed21dfdb6ee94391db51c9eedb63314ef6847 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b32b1c8ea1473e467cc21e9dabc9a7a1e8f2e17fa23a4db07864461d208655d3 run #0: crashed: kernel BUG in folio_end_writeback run #1: crashed: kernel BUG in end_buffer_async_write run #2: crashed: kernel BUG in folio_end_writeback run #3: crashed: kernel BUG in end_buffer_async_write run #4: crashed: kernel BUG in folio_end_writeback run #5: crashed: kernel BUG in folio_end_writeback run #6: crashed: kernel BUG in folio_end_writeback run #7: crashed: kernel BUG in end_buffer_async_write run #8: crashed: kernel BUG in folio_end_writeback run #9: crashed: kernel BUG in folio_end_writeback representative crash: kernel BUG in folio_end_writeback, types: [BUG] the chunk can be dropped minimized to 400 configs; suspects: [AF_RXRPC ARCH_ENABLE_MEMORY_HOTREMOVE ATM AX25 CC_HAS_UBSAN_BOUNDS 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 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_POOL_STATS PAGE_REPORTING 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 PER_VMA_LOCK_STATS 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 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_842_COMPRESS PSTORE_COMPRESS PSTORE_DEFLATE_COMPRESS PSTORE_DEFLATE_COMPRESS_DEFAULT PSTORE_LZ4HC_COMPRESS PSTORE_LZ4_COMPRESS PSTORE_LZO_COMPRESS PSTORE_ZSTD_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 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 UBSAN_ONLY_BOUNDS 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 [HANG LEAK UBSAN KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing current HEAD 706a741595047797872e669b3101429ab8d378ef testing commit 706a741595047797872e669b3101429ab8d378ef gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 7ad08245e2bfffa835511ea9b7e6ee8d05f28a22f0d9e86466716d843728a8e8 all runs: OK false negative chance: 0.000 # git bisect start 706a741595047797872e669b3101429ab8d378ef 929ed21dfdb6ee94391db51c9eedb63314ef6847 Bisecting: 7416 revisions left to test after this (roughly 13 steps) [1b722407a13b7f8658d2e26917791f32805980a2] Merge tag 'drm-next-2023-06-29' of git://anongit.freedesktop.org/drm/drm determine whether the revision contains the guilty commit revision 929ed21dfdb6ee94391db51c9eedb63314ef6847 crashed and is reachable testing commit 1b722407a13b7f8658d2e26917791f32805980a2 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c5e0d6c96641f5792ef25bb16857beea931547078a3a67b4ac59b5383607d145 all runs: OK false negative chance: 0.000 # git bisect bad 1b722407a13b7f8658d2e26917791f32805980a2 Bisecting: 4573 revisions left to test after this (roughly 12 steps) [6a8cbd9253abc1bd0df4d60c4c24fa555190376d] Merge tag 'v6.5-rc1-sysctl-next' of git://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux determine whether the revision contains the guilty commit revision 929ed21dfdb6ee94391db51c9eedb63314ef6847 crashed and is reachable testing commit 6a8cbd9253abc1bd0df4d60c4c24fa555190376d gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 3073ce9f61f22788ab1f1bdd00ec7248da3146444b209471c7c0880fd0a0348d all runs: OK false negative chance: 0.000 # git bisect bad 6a8cbd9253abc1bd0df4d60c4c24fa555190376d Bisecting: 1793 revisions left to test after this (roughly 11 steps) [a0433f8cae3ac51f59b4b1863032822aaa2d8164] Merge tag 'for-6.5/block-2023-06-23' of git://git.kernel.dk/linux determine whether the revision contains the guilty commit revision 929ed21dfdb6ee94391db51c9eedb63314ef6847 crashed and is reachable testing commit a0433f8cae3ac51f59b4b1863032822aaa2d8164 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 1af30a29cd66c3c4cc4aab933eefb3b5ef0c8d8b2a77ede1e9b66793c32670d4 all runs: OK false negative chance: 0.000 # git bisect bad a0433f8cae3ac51f59b4b1863032822aaa2d8164 Bisecting: 912 revisions left to test after this (roughly 10 steps) [54d687c13aef3194ea1490cf6d4b5016da1cf0bb] btrfs: move btrfs_check_trunc_cache_free_space into block-rsv.c determine whether the revision contains the guilty commit revision 929ed21dfdb6ee94391db51c9eedb63314ef6847 crashed and is reachable testing commit 54d687c13aef3194ea1490cf6d4b5016da1cf0bb gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 26b879c03634f03b8c8a4974da8b3b8df730ea43cce4234bc252cc06771d747e all runs: OK false negative chance: 0.000 # git bisect bad 54d687c13aef3194ea1490cf6d4b5016da1cf0bb Bisecting: 455 revisions left to test after this (roughly 9 steps) [4e635f9d86165e47f5440196f2ebdb258efb8341] octeontx2-af: fixed resource availability check determine whether the revision contains the guilty commit revision 929ed21dfdb6ee94391db51c9eedb63314ef6847 crashed and is reachable testing commit 4e635f9d86165e47f5440196f2ebdb258efb8341 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 632eeb7941e97e89af640222e11a61d7d64386c16a6ebaedeab84779edf8a553 run #0: crashed: kernel BUG in end_buffer_async_write run #1: crashed: kernel BUG in folio_end_writeback run #2: crashed: kernel BUG in folio_end_writeback run #3: crashed: kernel BUG in end_buffer_async_write run #4: crashed: kernel BUG in folio_end_writeback run #5: crashed: kernel BUG in end_buffer_async_write run #6: crashed: kernel BUG in end_buffer_async_write run #7: crashed: kernel BUG in folio_end_writeback run #8: crashed: kernel BUG in end_buffer_async_write run #9: crashed: kernel BUG in end_buffer_async_write representative crash: kernel BUG in end_buffer_async_write, types: [BUG] # git bisect good 4e635f9d86165e47f5440196f2ebdb258efb8341 Bisecting: 228 revisions left to test after this (roughly 8 steps) [7a043feb6cc02c9273c34392c41d17e08804a323] Merge tag '6.4-rc6-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6 determine whether the revision contains the guilty commit revision 929ed21dfdb6ee94391db51c9eedb63314ef6847 crashed and is reachable testing commit 7a043feb6cc02c9273c34392c41d17e08804a323 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 447df9b4ae6d87e37fed8f60f04bdc059141142daccd2c034e2ba309260f2bed all runs: OK false negative chance: 0.000 # git bisect bad 7a043feb6cc02c9273c34392c41d17e08804a323 Bisecting: 114 revisions left to test after this (roughly 7 steps) [64569520920a3ca5d456ddd9f4f95fc6ea9b8b45] Merge tag 'block-6.4-2023-06-09' of git://git.kernel.dk/linux determine whether the revision contains the guilty commit revision 929ed21dfdb6ee94391db51c9eedb63314ef6847 crashed and is reachable testing commit 64569520920a3ca5d456ddd9f4f95fc6ea9b8b45 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 635f6877891b770ac0b45aea999c58ec344ffed048e3790c8b89dc9081c216b5 run #0: crashed: kernel BUG in folio_end_writeback run #1: crashed: kernel BUG in end_buffer_async_write run #2: crashed: kernel BUG in end_buffer_async_write run #3: crashed: kernel BUG in folio_end_writeback run #4: crashed: kernel BUG in folio_end_writeback run #5: crashed: kernel BUG in folio_end_writeback run #6: crashed: kernel BUG in folio_end_writeback run #7: crashed: kernel BUG in end_buffer_async_write run #8: crashed: kernel BUG in end_buffer_async_write run #9: crashed: kernel BUG in end_buffer_async_write representative crash: kernel BUG in folio_end_writeback, types: [BUG] # git bisect good 64569520920a3ca5d456ddd9f4f95fc6ea9b8b45 Bisecting: 54 revisions left to test after this (roughly 6 steps) [022ce8862dff83c859089cd14bc4dca0733e2f90] Merge tag 'i2c-for-6.4-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux determine whether the revision contains the guilty commit revision 64569520920a3ca5d456ddd9f4f95fc6ea9b8b45 crashed and is reachable testing commit 022ce8862dff83c859089cd14bc4dca0733e2f90 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: be68ba1e45f78e8e92c3046ae38509b6692edca5aabae001f3c78dc9e48d5641 run #0: crashed: kernel BUG in folio_end_writeback run #1: crashed: kernel BUG in folio_end_writeback run #2: crashed: kernel BUG in folio_end_writeback run #3: crashed: kernel BUG in end_buffer_async_write run #4: crashed: kernel BUG in folio_end_writeback run #5: crashed: kernel BUG in folio_end_writeback run #6: crashed: kernel BUG in end_buffer_async_write run #7: crashed: kernel BUG in end_buffer_async_write run #8: crashed: kernel BUG in end_buffer_async_write run #9: crashed: kernel BUG in folio_end_writeback representative crash: kernel BUG in folio_end_writeback, types: [BUG] # git bisect good 022ce8862dff83c859089cd14bc4dca0733e2f90 Bisecting: 19 revisions left to test after this (roughly 5 steps) [fb054096aea0576f0c0a61c598e5e9676443ee86] Merge tag 'mm-hotfixes-stable-2023-06-12-12-22' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm determine whether the revision contains the guilty commit revision 022ce8862dff83c859089cd14bc4dca0733e2f90 crashed and is reachable testing commit fb054096aea0576f0c0a61c598e5e9676443ee86 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 029159befc62c6912d942ea7bd1f6e591f452219a30b7d98540a8500520a0935 all runs: OK false negative chance: 0.000 # git bisect bad fb054096aea0576f0c0a61c598e5e9676443ee86 Bisecting: 17 revisions left to test after this (roughly 4 steps) [26a6ffff7de5dd369cdb12e38ba11db682f1dec0] ocfs2: check new file size on fallocate call determine whether the revision contains the guilty commit checking the merge base 8b817fded42d8fe3a0eb47b1149d907851a3c942 no existing result, test the revision testing commit 8b817fded42d8fe3a0eb47b1149d907851a3c942 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 7437b5a7bc7f4e7ec10d72028532839be12076720cc3560c9666c12b5f608aaf run #0: crashed: kernel BUG in end_buffer_async_write run #1: crashed: kernel BUG in end_buffer_async_write run #2: crashed: kernel BUG in folio_end_writeback run #3: crashed: kernel BUG in end_buffer_async_write run #4: crashed: kernel BUG in end_buffer_async_write run #5: crashed: kernel BUG in end_buffer_async_write run #6: crashed: kernel BUG in folio_end_writeback run #7: crashed: kernel BUG in folio_end_writeback run #8: crashed: kernel BUG in folio_end_writeback run #9: crashed: kernel BUG in folio_end_writeback representative crash: kernel BUG in end_buffer_async_write, types: [BUG] testing commit 26a6ffff7de5dd369cdb12e38ba11db682f1dec0 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c598418dcab4dbcb4e64dc3782f4847c65d181923fbcdb7a44a48f2e75731a6d all runs: OK false negative chance: 0.000 # git bisect bad 26a6ffff7de5dd369cdb12e38ba11db682f1dec0 Bisecting: 8 revisions left to test after this (roughly 3 steps) [88ac3bbcf73853880a9b2a65c67e6854390741cc] riscv/purgatory: remove PGO flags determine whether the revision contains the guilty commit revision 8b817fded42d8fe3a0eb47b1149d907851a3c942 crashed and is reachable testing commit 88ac3bbcf73853880a9b2a65c67e6854390741cc gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ac45ea1ed6ecc5ab397c0f2e452b21ee4b1dd0b1795b3401c0be836ad3680943 run #0: crashed: kernel BUG in folio_end_writeback run #1: crashed: kernel BUG in folio_end_writeback run #2: crashed: kernel BUG in folio_end_writeback run #3: crashed: kernel BUG in end_buffer_async_write run #4: crashed: kernel BUG in folio_end_writeback run #5: crashed: kernel BUG in end_buffer_async_write run #6: crashed: kernel BUG in end_buffer_async_write run #7: crashed: kernel BUG in folio_end_writeback run #8: crashed: kernel BUG in end_buffer_async_write run #9: crashed: kernel BUG in folio_end_writeback representative crash: kernel BUG in folio_end_writeback, types: [BUG] # git bisect good 88ac3bbcf73853880a9b2a65c67e6854390741cc Bisecting: 4 revisions left to test after this (roughly 2 steps) [92c5d1b860e9581d64baca76779576c0ab0d943d] nilfs2: reject devices with insufficient block count determine whether the revision contains the guilty commit revision 8b817fded42d8fe3a0eb47b1149d907851a3c942 crashed and is reachable testing commit 92c5d1b860e9581d64baca76779576c0ab0d943d gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 1a34be3f65e90bb3c663ac549bebd6434d5050efc9fd77f6efe934eaf613b6cb all runs: OK false negative chance: 0.000 # git bisect bad 92c5d1b860e9581d64baca76779576c0ab0d943d Bisecting: 1 revision left to test after this (roughly 1 step) [9f6c6ad161f1af37548a6b80fb15710998ccfd1e] lib/test_vmalloc.c: avoid garbage in page array determine whether the revision contains the guilty commit revision 88ac3bbcf73853880a9b2a65c67e6854390741cc crashed and is reachable testing commit 9f6c6ad161f1af37548a6b80fb15710998ccfd1e gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 1320ad7dde1e3a515dc9251ad6db0f01f44244010125ba88e4e03fe821fa7e1d run #0: crashed: kernel BUG in folio_end_writeback run #1: crashed: kernel BUG in folio_end_writeback run #2: crashed: kernel BUG in end_buffer_async_write run #3: crashed: kernel BUG in folio_end_writeback run #4: crashed: kernel BUG in folio_end_writeback run #5: crashed: kernel BUG in folio_end_writeback run #6: crashed: kernel BUG in end_buffer_async_write run #7: crashed: kernel BUG in folio_end_writeback run #8: crashed: kernel BUG in folio_end_writeback run #9: crashed: kernel BUG in end_buffer_async_write representative crash: kernel BUG in folio_end_writeback, types: [BUG] # git bisect good 9f6c6ad161f1af37548a6b80fb15710998ccfd1e Bisecting: 0 revisions left to test after this (roughly 0 steps) [50d927880e0f90d5cb25e897e9d03e5edacc79a8] ocfs2: fix use-after-free when unmounting read-only filesystem determine whether the revision contains the guilty commit revision 88ac3bbcf73853880a9b2a65c67e6854390741cc crashed and is reachable testing commit 50d927880e0f90d5cb25e897e9d03e5edacc79a8 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 1a2844a6f5dc2649ebe42ef5caf0aa926c29102c8d6ffc866ed9c5cacb6ba070 run #0: crashed: kernel BUG in end_buffer_async_write run #1: crashed: kernel BUG in end_buffer_async_write run #2: crashed: kernel BUG in end_buffer_async_write run #3: crashed: kernel BUG in end_buffer_async_write run #4: crashed: kernel BUG in folio_end_writeback run #5: crashed: kernel BUG in end_buffer_async_write run #6: crashed: kernel BUG in folio_end_writeback run #7: crashed: kernel BUG in folio_end_writeback run #8: crashed: kernel BUG in end_buffer_async_write run #9: crashed: kernel BUG in folio_end_writeback representative crash: kernel BUG in end_buffer_async_write, types: [BUG] # git bisect good 50d927880e0f90d5cb25e897e9d03e5edacc79a8 92c5d1b860e9581d64baca76779576c0ab0d943d is the first bad commit commit 92c5d1b860e9581d64baca76779576c0ab0d943d Author: Ryusuke Konishi Date: Fri May 26 11:13:32 2023 +0900 nilfs2: reject devices with insufficient block count The current sanity check for nilfs2 geometry information lacks checks for the number of segments stored in superblocks, so even for device images that have been destructively truncated or have an unusually high number of segments, the mount operation may succeed. This causes out-of-bounds block I/O on file system block reads or log writes to the segments, the latter in particular causing "a_ops->writepages" to repeatedly fail, resulting in sync_inodes_sb() to hang. Fix this issue by checking the number of segments stored in the superblock and avoiding mounting devices that can cause out-of-bounds accesses. To eliminate the possibility of overflow when calculating the number of blocks required for the device from the number of segments, this also adds a helper function to calculate the upper bound on the number of segments and inserts a check using it. Link: https://lkml.kernel.org/r/20230526021332.3431-1-konishi.ryusuke@gmail.com Signed-off-by: Ryusuke Konishi Reported-by: syzbot+7d50f1e54a12ba3aeae2@syzkaller.appspotmail.com Link: https://syzkaller.appspot.com/bug?extid=7d50f1e54a12ba3aeae2 Tested-by: Ryusuke Konishi Cc: Signed-off-by: Andrew Morton fs/nilfs2/the_nilfs.c | 43 ++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 42 insertions(+), 1 deletion(-) accumulated error probability: 0.00 culprit signature: 1a34be3f65e90bb3c663ac549bebd6434d5050efc9fd77f6efe934eaf613b6cb parent signature: 1a2844a6f5dc2649ebe42ef5caf0aa926c29102c8d6ffc866ed9c5cacb6ba070 revisions tested: 23, total time: 4h27m55.553929381s (build: 1h39m9.946047287s, test: 2h35m34.995396891s) first good commit: 92c5d1b860e9581d64baca76779576c0ab0d943d nilfs2: reject devices with insufficient block count recipients (to): ["akpm@linux-foundation.org" "konishi.ryusuke@gmail.com"] recipients (cc): []