ci2 starts bisection 2025-12-23 18:00:46.857689338 +0000 UTC m=+2349059.034812395 bisecting fixing commit since 63676eefb7a026d04b51dcb7aaf54f358517a2ec building syzkaller on f3558dbf032eab2b77c1cb11b9ce2baffe7838d3 ensuring issue is reproducible on original commit 63676eefb7a026d04b51dcb7aaf54f358517a2ec testing commit 63676eefb7a026d04b51dcb7aaf54f358517a2ec gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 3ec95ab410bb419f97b4fd11f3d307202056203b2a4a50aaacf109d828e974ea all runs: crashed: WARNING in __jbd2_log_wait_for_space representative crash: WARNING in __jbd2_log_wait_for_space, types: [WARNING] check whether we can drop unnecessary instrumentation disabling configs for [atomic_sleep hang memleak ubsan kasan locking], they are not needed testing commit 63676eefb7a026d04b51dcb7aaf54f358517a2ec gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 2e88de6a557ed88c47b6f4051d5e07809a46fd3a70837772f1f69f28ce661bd1 all runs: crashed: WARNING in __jbd2_log_wait_for_space representative crash: WARNING in __jbd2_log_wait_for_space, types: [WARNING] the bug reproduces without the instrumentation disabling configs for [hang memleak ubsan kasan locking atomic_sleep], they are not needed kconfig minimization: base=4109 full=8236 leaves diff=2163 split chunks (needed=false): <2163> split chunk #0 of len 2163 into 5 parts testing without sub-chunk 1/5 disabling configs for [kasan locking atomic_sleep hang memleak ubsan], they are not needed testing commit 63676eefb7a026d04b51dcb7aaf54f358517a2ec gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: a1ca50a2a1e011991642c26e94d4db4194bb6b982c96d7f493fcd627c7009862 all runs: crashed: WARNING in __jbd2_log_wait_for_space representative crash: WARNING in __jbd2_log_wait_for_space, types: [WARNING] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [kasan locking atomic_sleep hang memleak ubsan], they are not needed testing commit 63676eefb7a026d04b51dcb7aaf54f358517a2ec gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 45e3d6dbbfcdf563cbbc55fb3bd8a9cf8516c15f8ee807b0a597294c6052161b all runs: crashed: WARNING in __jbd2_log_wait_for_space representative crash: WARNING in __jbd2_log_wait_for_space, types: [WARNING] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [hang memleak ubsan kasan locking atomic_sleep], they are not needed testing commit 63676eefb7a026d04b51dcb7aaf54f358517a2ec gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 1c5936293d209a54d973dc141dd5f27079ae4e42244489e80c9c32ae873eae04 all runs: crashed: WARNING in __jbd2_log_wait_for_space representative crash: WARNING in __jbd2_log_wait_for_space, types: [WARNING] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [hang memleak ubsan kasan locking atomic_sleep], they are not needed testing commit 63676eefb7a026d04b51dcb7aaf54f358517a2ec gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 72feedb82a7170e84ab3b546185418bb8e388648b3c23c0927db53df6c284173 all runs: OK false negative chance: 0.000 testing without sub-chunk 5/5 disabling configs for [atomic_sleep hang memleak ubsan kasan locking], they are not needed testing commit 63676eefb7a026d04b51dcb7aaf54f358517a2ec gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: d0c5aba6df31c94099912a3e589f6d1b184085380ab6e35aa9959f0365e6c07c all runs: crashed: WARNING in __jbd2_log_wait_for_space representative crash: WARNING in __jbd2_log_wait_for_space, types: [WARNING] the chunk can be dropped minimized to 433 configs; suspects: [AF_RXRPC ARCH_ENABLE_MEMORY_HOTREMOVE ARCH_HAS_PTE_DEVMAP ATM AX25 BT BT_BREDR BT_HIDP BXT_WC_PMIC_OPREGION CFG80211 CMA CRYPTO_CTS DAX DLM DRM DVB_CORE ENCRYPTED_KEYS EXTCON GENEVE GPIOLIB HAMRADIO HAVE_CLK HID_NINTENDO HID_NVIDIA_SHIELD HID_PLAYSTATION HID_SENSOR_HUB HID_SMARTJOYPLUS HID_STEAM HID_THRUSTMASTER IIO INFINIBAND INFINIBAND_ADDR_TRANS INFINIBAND_IPOIB INFINIBAND_USER_ACCESS INFINIBAND_VIRT_DMA INPUT_TABLET INPUT_TOUCHSCREEN INTEL_SCU_IPC INTEL_SOC_PMIC_BXTWC IP_SCTP L2TP LEDS_CLASS_MULTICOLOR LIBNVDIMM MAC80211 MCORE2 MEDIA_COMMON_OPTIONS MEDIA_DIGITAL_TV_SUPPORT MEDIA_PLATFORM_SUPPORT MEDIA_RADIO_SUPPORT MEDIA_SDR_SUPPORT MEDIA_SUPPORT MEDIA_USB_SUPPORT MEMORY_HOTPLUG MEMORY_HOTREMOVE MFD_DLN2 MFD_INTEL_PMC_BXT MFD_MT6360 MFD_MT6370 MFD_RETU MMC MTD MTD_UBI NETFILTER_CONNCOUNT NET_IPGRE NET_IPGRE_DEMUX NFS_V4_1 NF_TPROXY_IPV4 NF_TPROXY_IPV6 NILFS2_FS NINTENDO_FF 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 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 NVIDIA_SHIELD_FF 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_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 PLAYSTATION_FF PLFXLC PMIC_OPREGION PM_CLK PNFS_BLOCK PNFS_FILE_LAYOUT PNFS_FLEXFILE_LAYOUT PPP PPPOATM PPPOE PPPOE_HASH_BITS_1 PPPOL2TP PPP_ASYNC PPP_BSDCOMP PPP_DEFLATE PPP_FILTER PPP_MPPE PPP_MULTILINK PPP_SYNC_TTY PPTP PREEMPT PREEMPT_NOTIFIERS PROC_CHILDREN PROC_PID_CPUSET PSAMPLE PSI PSTORE PSTORE_COMPRESS PTDUMP_CORE QCOM_QMI_HELPERS QNX4FS_FS QNX6FS_FS QRTR QRTR_TUN RADIO_ADAPTERS RADIO_SHARK RADIO_SHARK2 RADIO_TEA575X RAID6_PQ RAID_ATTRS RC_ATI_REMOTE RC_CORE RC_DEVICES RC_XBOX_DVD 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_FIXED_VOLTAGE REGULATOR_TWL4030 RESET_CONTROLLER RFKILL RFKILL_INPUT RFKILL_LEDS RMI4_2D_SENSOR RMI4_CORE RMI4_F03 RMI4_F03_SERIO RMI4_F11 RMI4_F12 RMI4_F30 RMI4_F3A ROMFS_BACKED_BY_BOTH ROMFS_FS ROMFS_ON_BLOCK ROMFS_ON_MTD ROSE RPCSEC_GSS_KRB5_ENCTYPES_AES_SHA1 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 SENSORS_AQUACOMPUTER_D5NEXT SENSORS_CORSAIR_CPRO SENSORS_CORSAIR_PSU SENSORS_GIGABYTE_WATERFORCE SENSORS_NZXT_KRAKEN2 SENSORS_NZXT_SMART2 SENSORS_POWERZ 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 SMB_SERVER SMC SMC_DIAG SMSC_PHY SMS_SDIO_DRV SMS_SIANO_DEBUGFS 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_UMP_CLIENT SND_SEQ_VIRMIDI SND_SOC SND_SOC_I2C_AND_SPI SND_SOC_SDCA_OPTIONAL SND_SUPPORT_OLD_API SND_TIMER SND_UMP SND_UMP_LEGACY_RAWMIDI SND_USB SND_USB_6FIRE SND_USB_AUDIO SND_USB_AUDIO_MIDI_V2 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 SOUNDWIRE SOUND_OSS_CORE SOUND_OSS_CORE_PRECLAIM SPI SPI_DLN2 SPI_DYNAMIC SPI_LJCA SPI_MASTER SQUASHFS SQUASHFS_4K_DEVBLK_SIZE SQUASHFS_COMPILE_DECOMP_MULTI SQUASHFS_DECOMP_MULTI 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 STEAM_FF STP STREAM_PARSER SUNRPC_BACKCHANNEL SUN_PARTITION SW_SYNC SYSFB SYSFS_SYSCALL 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 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 TEE TEXTSEARCH TEXTSEARCH_BM TEXTSEARCH_FSM TEXTSEARCH_KMP THERMAL_GOV_USER_SPACE THP_SWAP THRUSTMASTER_FF TIPC TIPC_CRYPTO TIPC_DIAG TIPC_MEDIA_IB TIPC_MEDIA_UDP TLS TLS_TOE TMPFS_QUOTA TOOLS_SUPPORT_RELR 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_ANX7411 TYPEC_DP_ALTMODE TYPEC_FUSB302 TYPEC_HD3SS3220 TYPEC_MT6360 TYPEC_MUX_FSA4480 TYPEC_MUX_GPIO_SBU TYPEC_MUX_INTEL_PMC TYPEC_MUX_NB7VPQ904M TYPEC_MUX_PTN36502 TYPEC_MUX_WCD939X_USBSS TYPEC_NVIDIA_ALTMODE TYPEC_RT1711H TYPEC_RT1719 TYPEC_STUSB160X TYPEC_TCPCI TYPEC_TCPCI_MAXIM TYPEC_TCPCI_MT6370 TYPEC_TCPM TYPEC_TPS6598X TYPEC_UCSI TYPEC_WCOVE TYPEC_WUSB3801 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 UCSI_CCG UCSI_STM32G0 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_DWC2 USB_GADGET USB_LJCA USB_MUSB_HDRC USB_NET_CDC_SUBSET USB_ROLE_SWITCH USB_STORAGE_REALTEK USB_ULPI_BUS USB_USBNET VIDEO_DEV VXLAN WIRELESS WLAN WLAN_VENDOR_PURELIFI ZONE_DEVICE] disabling configs for [locking atomic_sleep hang memleak ubsan kasan], they are not needed testing current HEAD b927546677c876e26eba308550207c2ddf812a43 testing commit b927546677c876e26eba308550207c2ddf812a43 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 2262d021c349799629b098c4224bc5b0caf5dab8249a6066000ccafb56c76bb2 all runs: OK false negative chance: 0.000 # git bisect start b927546677c876e26eba308550207c2ddf812a43 63676eefb7a026d04b51dcb7aaf54f358517a2ec Bisecting: 43812 revisions left to test after this (roughly 16 steps) [4b02ed4ab721f559e843251564a3ea6ae1769a83] Merge tag 'regulator-fix-v6.16-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator determine whether the revision contains the guilty commit revision 63676eefb7a026d04b51dcb7aaf54f358517a2ec crashed and is reachable testing commit 4b02ed4ab721f559e843251564a3ea6ae1769a83 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: b44467f5c01b0566fe74734a78330ff173e4eaf4b7dcc29121f746486cc00e2d all runs: crashed: WARNING in __jbd2_log_wait_for_space representative crash: WARNING in __jbd2_log_wait_for_space, types: [WARNING] # git bisect good 4b02ed4ab721f559e843251564a3ea6ae1769a83 Bisecting: 21736 revisions left to test after this (roughly 15 steps) [f79e772258df311c2cb21594ca0996318e720d28] Merge tag 'media/v6.18-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media determine whether the revision contains the guilty commit revision 4b02ed4ab721f559e843251564a3ea6ae1769a83 crashed and is reachable testing commit f79e772258df311c2cb21594ca0996318e720d28 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 89b841942f59124609cf11ae4ce364c2f89ca96b67c0eec3e91cdb003faf1c94 all runs: crashed: WARNING in __jbd2_log_wait_for_space representative crash: WARNING in __jbd2_log_wait_for_space, types: [WARNING] # git bisect good f79e772258df311c2cb21594ca0996318e720d28 Bisecting: 11207 revisions left to test after this (roughly 13 steps) [015e7b0b0e8e51f7321ec2aafc1d7fc0a8a5536f] Merge tag 'bpf-next-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next determine whether the revision contains the guilty commit revision 63676eefb7a026d04b51dcb7aaf54f358517a2ec crashed and is reachable testing commit 015e7b0b0e8e51f7321ec2aafc1d7fc0a8a5536f gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 572e62f373d71352793aa548ce7363e20b99adf614db9bb1c2ffc52631caf649 all runs: crashed: WARNING in __jbd2_log_wait_for_space representative crash: WARNING in __jbd2_log_wait_for_space, types: [WARNING] # git bisect good 015e7b0b0e8e51f7321ec2aafc1d7fc0a8a5536f Bisecting: 5596 revisions left to test after this (roughly 13 steps) [52206f82d9244546e5790f5ad64465343aa7ffd5] Merge tag 'pmdomain-v6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/linux-pm determine whether the revision contains the guilty commit revision 4b02ed4ab721f559e843251564a3ea6ae1769a83 crashed and is reachable testing commit 52206f82d9244546e5790f5ad64465343aa7ffd5 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 58f2576b2e46ce4c71610dd1d9d4f201de12099f507a7ee38c57f0af542e3cf4 all runs: crashed: WARNING in __jbd2_log_wait_for_space representative crash: WARNING in __jbd2_log_wait_for_space, types: [WARNING] # git bisect good 52206f82d9244546e5790f5ad64465343aa7ffd5 Bisecting: 2754 revisions left to test after this (roughly 12 steps) [7eb7f5723df50a7d5564aa609e4c147f669a5cb4] Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi determine whether the revision contains the guilty commit revision 52206f82d9244546e5790f5ad64465343aa7ffd5 crashed and is reachable testing commit 7eb7f5723df50a7d5564aa609e4c147f669a5cb4 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 5cc14de1b105346c759407b489d28322c5a8f0b93c713f5d5dd0d7c6801b3205 all runs: crashed: WARNING in __jbd2_log_wait_for_space representative crash: WARNING in __jbd2_log_wait_for_space, types: [WARNING] # git bisect good 7eb7f5723df50a7d5564aa609e4c147f669a5cb4 Bisecting: 1378 revisions left to test after this (roughly 11 steps) [08bfcf4ff9d39228150a757803fc02dffce84ab0] docs: hwmon: fix link to g762 devicetree binding determine whether the revision contains the guilty commit revision 4b02ed4ab721f559e843251564a3ea6ae1769a83 crashed and is reachable testing commit 08bfcf4ff9d39228150a757803fc02dffce84ab0 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 148023f9c3b51589a4d28217e6eec74895b237a1cb80c0df52a49a77485a6ea8 all runs: OK false negative chance: 0.000 # git bisect bad 08bfcf4ff9d39228150a757803fc02dffce84ab0 Bisecting: 835 revisions left to test after this (roughly 10 steps) [701d7d782d98242a64cdeed90750f88ff733bc39] Merge tag 'spdx-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/spdx determine whether the revision contains the guilty commit revision 4b02ed4ab721f559e843251564a3ea6ae1769a83 crashed and is reachable testing commit 701d7d782d98242a64cdeed90750f88ff733bc39 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: aaf280d9384b0d5ad6bd90ad6517fb9bcad07e1b6e1f850388358438f1a4e332 all runs: OK false negative chance: 0.000 # git bisect bad 701d7d782d98242a64cdeed90750f88ff733bc39 Bisecting: 267 revisions left to test after this (roughly 8 steps) [fbff94967958e46f7404b2dfbcf3b19e96aaaae2] Merge tag 'linux-watchdog-6.19-rc1' of git://www.linux-watchdog.org/linux-watchdog determine whether the revision contains the guilty commit revision 4b02ed4ab721f559e843251564a3ea6ae1769a83 crashed and is reachable testing commit fbff94967958e46f7404b2dfbcf3b19e96aaaae2 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: ba2770caeab9e0dbc9ac432a11eb69a6d0078e552c12b109dc66bf8ff4d1bc97 all runs: crashed: WARNING in __jbd2_log_wait_for_space representative crash: WARNING in __jbd2_log_wait_for_space, types: [WARNING] # git bisect good fbff94967958e46f7404b2dfbcf3b19e96aaaae2 Bisecting: 133 revisions left to test after this (roughly 7 steps) [af06a40474793ad9677d1771c0624ae8191f0892] init: replace simple_strtoul with kstrtoul to improve lpj_setup determine whether the revision contains the guilty commit revision 63676eefb7a026d04b51dcb7aaf54f358517a2ec crashed and is reachable testing commit af06a40474793ad9677d1771c0624ae8191f0892 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 759dcb735cdc36c55b971aa55d89e0592f795c8df1007136c3811561372c409a all runs: OK false negative chance: 0.000 # git bisect bad af06a40474793ad9677d1771c0624ae8191f0892 Bisecting: 66 revisions left to test after this (roughly 6 steps) [a9af76a78760717361cccc884dc649e30db61c8b] watchdog: add sys_info sysctls to dump sys info on system lockup determine whether the revision contains the guilty commit revision 63676eefb7a026d04b51dcb7aaf54f358517a2ec crashed and is reachable testing commit a9af76a78760717361cccc884dc649e30db61c8b gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: a582708aff1a0e8e27cf6d4b73a81257c1579e1c7412c85dc5e040e63f7de1c3 all runs: OK false negative chance: 0.000 # git bisect bad a9af76a78760717361cccc884dc649e30db61c8b Bisecting: 33 revisions left to test after this (roughly 5 steps) [ded7d97442f0f5af25e942949ac304e025b85165] mailmap: add entry for Hao Ge determine whether the revision contains the guilty commit revision f79e772258df311c2cb21594ca0996318e720d28 crashed and is reachable testing commit ded7d97442f0f5af25e942949ac304e025b85165 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: b0dd72ad5b5652c236d5c67aa747198aff602dd085cdf83a90362d588b0d821c all runs: crashed: WARNING in __jbd2_log_wait_for_space representative crash: WARNING in __jbd2_log_wait_for_space, types: [WARNING] # git bisect good ded7d97442f0f5af25e942949ac304e025b85165 Bisecting: 16 revisions left to test after this (roughly 4 steps) [6480241f31f543333ed0c7a209962412461f6e41] lib: add mul_u64_add_u64_div_u64() and mul_u64_u64_div_u64_roundup() determine whether the revision contains the guilty commit revision f79e772258df311c2cb21594ca0996318e720d28 crashed and is reachable testing commit 6480241f31f543333ed0c7a209962412461f6e41 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 62aa4b4afd71e39b9a9de80b34e8e53e45710756ef2977623515fbd5a40886c9 all runs: OK false negative chance: 0.000 # git bisect bad 6480241f31f543333ed0c7a209962412461f6e41 Bisecting: 8 revisions left to test after this (roughly 3 steps) [e1c70505ee8158c1108340d9cd67182ade93af4a] ocfs2: add extra consistency checks for chain allocator dinodes determine whether the revision contains the guilty commit revision f79e772258df311c2cb21594ca0996318e720d28 crashed and is reachable testing commit e1c70505ee8158c1108340d9cd67182ade93af4a gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: ca5209d312a4d97999dc90d8f7795460e4927fcfe9bf20364a22b7028d3b6325 all runs: crashed: WARNING in __jbd2_log_wait_for_space representative crash: WARNING in __jbd2_log_wait_for_space, types: [WARNING] # git bisect good e1c70505ee8158c1108340d9cd67182ade93af4a Bisecting: 4 revisions left to test after this (roughly 2 steps) [bd97c976419126ee3e9acd4957f6f16a90316643] util_macros.h: fix kernel-doc for u64_to_user_ptr() determine whether the revision contains the guilty commit revision f79e772258df311c2cb21594ca0996318e720d28 crashed and is reachable testing commit bd97c976419126ee3e9acd4957f6f16a90316643 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 6dac82221dc9a41ada0fb358c678fcc2aa6164f462e607fa229e70b340da0361 all runs: OK false negative chance: 0.000 # git bisect bad bd97c976419126ee3e9acd4957f6f16a90316643 Bisecting: 1 revision left to test after this (roughly 1 step) [7f37d88f5cb32fff454f12cd99444686482ca23b] lib/Kconfig.debug: cleanup CONFIG_DEBUG_SECTION_MISMATCH help text determine whether the revision contains the guilty commit revision 4b02ed4ab721f559e843251564a3ea6ae1769a83 crashed and is reachable testing commit 7f37d88f5cb32fff454f12cd99444686482ca23b gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 18112aa699cd241284a9665ed3b876f513ae4c5fe79de9651d2711b4947b22a1 all runs: OK false negative chance: 0.000 # git bisect bad 7f37d88f5cb32fff454f12cd99444686482ca23b Bisecting: 0 revisions left to test after this (roughly 0 steps) [93ce0ff117b0c468961d7c296a03ad57e1e8da9f] ocfs2: validate cl_bpc in allocator inodes to prevent divide-by-zero determine whether the revision contains the guilty commit revision 63676eefb7a026d04b51dcb7aaf54f358517a2ec crashed and is reachable testing commit 93ce0ff117b0c468961d7c296a03ad57e1e8da9f gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: a8ea0b05aa52086922970cd82809412f4271753069eb650e1c625fbb68e644a0 all runs: OK false negative chance: 0.000 # git bisect bad 93ce0ff117b0c468961d7c296a03ad57e1e8da9f 93ce0ff117b0c468961d7c296a03ad57e1e8da9f is the first bad commit commit 93ce0ff117b0c468961d7c296a03ad57e1e8da9f Author: Deepanshu Kartikey Date: Thu Oct 30 18:30:03 2025 +0300 ocfs2: validate cl_bpc in allocator inodes to prevent divide-by-zero The chain allocator field cl_bpc (blocks per cluster) is read from disk and used in division operations without validation. A corrupted filesystem image with cl_bpc=0 causes a divide-by-zero crash in the kernel: divide error: 0000 [#1] PREEMPT SMP KASAN RIP: 0010:ocfs2_bg_discontig_add_extent fs/ocfs2/suballoc.c:335 [inline] RIP: 0010:ocfs2_block_group_fill+0x5bd/0xa70 fs/ocfs2/suballoc.c:386 Call Trace: ocfs2_block_group_alloc+0x7e9/0x1330 fs/ocfs2/suballoc.c:703 ocfs2_reserve_suballoc_bits+0x20a6/0x4640 fs/ocfs2/suballoc.c:834 ocfs2_reserve_new_inode+0x4f4/0xcc0 fs/ocfs2/suballoc.c:1074 ocfs2_mknod+0x83c/0x2050 fs/ocfs2/namei.c:306 This patch adds validation in ocfs2_validate_inode_block() to ensure cl_bpc matches the expected value calculated from the superblock's cluster size and block size for chain allocator inodes (identified by OCFS2_CHAIN_FL). Moving the validation to inode validation time (rather than allocation time) has several benefits: - Validates once when the inode is read, rather than on every allocation - Protects all code paths that use cl_bpc (allocation, resize, etc.) - Follows the existing pattern of inode validation in OCFS2 - Centralizes validation logic The validation catches both: - Zero values that cause divide-by-zero crashes - Non-zero but incorrect values indicating filesystem corruption or mismatched filesystem geometry With this fix, mounting a corrupted filesystem produces: OCFS2: ERROR (device loop0): ocfs2_validate_inode_block: Inode 74 has corrupted cl_bpc: ondisk=0 expected=16 instead of a kernel crash. [dmantipov@yandex.ru: combine into the series and tweak the message to fit the commonly used style] Link: https://lkml.kernel.org/r/20251030153003.1934585-2-dmantipov@yandex.ru Link: https://lore.kernel.org/ocfs2-devel/20251026132625.12348-1-kartikey406@gmail.com/T/#u [v1] Link: https://lore.kernel.org/all/20251027124131.10002-1-kartikey406@gmail.com/T/ [v2] Signed-off-by: Deepanshu Kartikey Signed-off-by: Dmitry Antipov Reported-by: syzbot+fd8af97c7227fe605d95@syzkaller.appspotmail.com Closes: https://syzkaller.appspot.com/bug?extid=fd8af97c7227fe605d95 Tested-by: syzbot+fd8af97c7227fe605d95@syzkaller.appspotmail.com Suggested-by: Joseph Qi Reviewed-by: Joseph Qi Cc: Heming Zhao Cc: Joel Becker Cc: Jun Piao Cc: Junxiao Bi Cc: Mark Fasheh Signed-off-by: Andrew Morton fs/ocfs2/inode.c | 10 ++++++++++ 1 file changed, 10 insertions(+) accumulated error probability: 0.00 culprit signature: a8ea0b05aa52086922970cd82809412f4271753069eb650e1c625fbb68e644a0 parent signature: ca5209d312a4d97999dc90d8f7795460e4927fcfe9bf20364a22b7028d3b6325 revisions tested: 24, total time: 6h30m28.243694119s (build: 2h39m50.893000283s, test: 3h15m56.209968175s) first good commit: 93ce0ff117b0c468961d7c296a03ad57e1e8da9f ocfs2: validate cl_bpc in allocator inodes to prevent divide-by-zero recipients (to): ["akpm@linux-foundation.org" "dmantipov@yandex.ru" "joseph.qi@linux.alibaba.com" "kartikey406@gmail.com" "syzbot+fd8af97c7227fe605d95@syzkaller.appspotmail.com"] recipients (cc): []