ci starts bisection 2026-01-06 21:18:32.76212627 +0000 UTC m=+3575902.287612393 bisecting fixing commit since be48bcf004f9d0c9207ff21d0edb3b42f253829e building syzkaller on 523f460ebff983aabd0f441fbc60069cb96a56d1 ensuring issue is reproducible on original commit be48bcf004f9d0c9207ff21d0edb3b42f253829e testing commit be48bcf004f9d0c9207ff21d0edb3b42f253829e gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 90be04dafbbe972f0aea874e09b986afb1ea1df42eff1af532368a6addbed7bc all runs: crashed: kernel BUG in ocfs2_remove_extent representative crash: kernel BUG in ocfs2_remove_extent, types: [BUG] check whether we can drop unnecessary instrumentation disabling configs for [kasan locking atomic_sleep hang memleak ubsan], they are not needed testing commit be48bcf004f9d0c9207ff21d0edb3b42f253829e gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: d87b1a4599b8b3d28c34bab2da47b6ac65d149da42230f9895e91fb42f4a3da6 all runs: crashed: kernel BUG in ocfs2_remove_extent representative crash: kernel BUG in ocfs2_remove_extent, types: [BUG] the bug reproduces without the instrumentation disabling configs for [memleak ubsan kasan locking atomic_sleep hang], they are not needed kconfig minimization: base=4116 full=8509 leaves diff=2193 split chunks (needed=false): <2193> split chunk #0 of len 2193 into 5 parts testing without sub-chunk 1/5 disabling configs for [hang memleak ubsan kasan locking atomic_sleep], they are not needed testing commit be48bcf004f9d0c9207ff21d0edb3b42f253829e gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 846e4ce187bf5d24a49f997f43b3b5c722545ff4573e1b106e5347c5ab1a3f14 all runs: crashed: kernel BUG in ocfs2_remove_extent representative crash: kernel BUG in ocfs2_remove_extent, types: [BUG] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [ubsan kasan locking atomic_sleep hang memleak], they are not needed testing commit be48bcf004f9d0c9207ff21d0edb3b42f253829e gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: d58da2ca7a0c5a227fa91a7977542b19b4601d14a813efbb9b05ecbe0b3d4801 all runs: crashed: kernel BUG in ocfs2_remove_extent representative crash: kernel BUG in ocfs2_remove_extent, types: [BUG] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [atomic_sleep hang memleak ubsan kasan locking], they are not needed testing commit be48bcf004f9d0c9207ff21d0edb3b42f253829e gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 71c3b2cacf6919a49353f5b03bde561bd816f988329e208aa4099a8a1fa40747 all runs: crashed: kernel BUG in ocfs2_remove_extent representative crash: kernel BUG in ocfs2_remove_extent, types: [BUG] 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 be48bcf004f9d0c9207ff21d0edb3b42f253829e gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: c95c806e93d427901c93a217495977c313584dcc4a8ee4fd2bbadd8f7a08ea9b all runs: OK false negative chance: 0.000 testing without sub-chunk 5/5 disabling configs for [hang memleak ubsan kasan locking atomic_sleep], they are not needed testing commit be48bcf004f9d0c9207ff21d0edb3b42f253829e gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: cad94d970911f231ffb1ff9caad3a350761276f1d865527098e3603721a8c416 all runs: crashed: kernel BUG in ocfs2_remove_extent representative crash: kernel BUG in ocfs2_remove_extent, types: [BUG] the chunk can be dropped minimized to 439 configs; suspects: [AF_RXRPC ARCH_ENABLE_MEMORY_HOTREMOVE ATM AX25 BT BT_BREDR BT_HIDP BXT_WC_PMIC_OPREGION CFG80211 CMA 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 MEDIA_COMMON_OPTIONS MEDIA_DIGITAL_TV_SUPPORT MEDIA_PLATFORM_SUPPORT MEDIA_RADIO_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_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 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 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 PSAMPLE PSI PSTORE PSTORE_COMPRESS 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 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 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_ALC260 SND_HDA_CODEC_ALC262 SND_HDA_CODEC_ALC268 SND_HDA_CODEC_ALC269 SND_HDA_CODEC_ALC662 SND_HDA_CODEC_ALC680 SND_HDA_CODEC_ALC861 SND_HDA_CODEC_ALC861VD SND_HDA_CODEC_ALC880 SND_HDA_CODEC_ALC882 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_CS420X SND_HDA_CODEC_CS421X SND_HDA_CODEC_HDMI SND_HDA_CODEC_HDMI_ATI SND_HDA_CODEC_HDMI_GENERIC SND_HDA_CODEC_HDMI_INTEL SND_HDA_CODEC_HDMI_NVIDIA SND_HDA_CODEC_HDMI_NVIDIA_MCP SND_HDA_CODEC_HDMI_SIMPLE SND_HDA_CODEC_HDMI_TEGRA SND_HDA_CODEC_REALTEK SND_HDA_CODEC_REALTEK_LIB 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_ELD 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_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 SURFACE_AGGREGATOR SURFACE_AGGREGATOR_BUS SURFACE_AGGREGATOR_REGISTRY SURFACE_HID SURFACE_HID_CORE SURFACE_KBD SW_SYNC SYSFB SYSFS_SYSCALL SYSV68_PARTITION 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 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 USB_DWC2 USB_GADGET USB_LJCA USB_MUSB_HDRC USB_ROLE_SWITCH USB_STORAGE_REALTEK USB_ULPI_BUS VIDEO_DEV VXLAN WIRELESS WLAN WLAN_VENDOR_PURELIFI ZONE_DEVICE] disabling configs for [hang memleak ubsan kasan locking atomic_sleep], they are not needed testing current HEAD f0b9d8eb98dfee8d00419aa07543bdc2c1a44fb1 testing commit f0b9d8eb98dfee8d00419aa07543bdc2c1a44fb1 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 9cea26150991ffe3e52b717e74d0a5735f150ff0ec07c4cd1b90c706a52e5b6b all runs: OK false negative chance: 0.000 # git bisect start f0b9d8eb98dfee8d00419aa07543bdc2c1a44fb1 be48bcf004f9d0c9207ff21d0edb3b42f253829e Bisecting: 15445 revisions left to test after this (roughly 14 steps) [bfe62db5422b1a5f25752bd0877a097d436d876d] Merge branch 'dwmac-support-for-rockchip-rk3506' determine whether the revision contains the guilty commit revision be48bcf004f9d0c9207ff21d0edb3b42f253829e crashed and is reachable testing commit bfe62db5422b1a5f25752bd0877a097d436d876d gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: e32b0fb0b6642e0f1582acf8477975e8af05b41614c3e7ecc54315c6ab579b93 all runs: crashed: kernel BUG in ocfs2_remove_extent representative crash: kernel BUG in ocfs2_remove_extent, types: [BUG] # git bisect good bfe62db5422b1a5f25752bd0877a097d436d876d Bisecting: 7331 revisions left to test after this (roughly 13 steps) [6dfafbd0299a60bfb5d5e277fdf100037c7ded07] Merge tag 'drm-next-2025-12-03' of https://gitlab.freedesktop.org/drm/kernel determine whether the revision contains the guilty commit revision be48bcf004f9d0c9207ff21d0edb3b42f253829e crashed and is reachable testing commit 6dfafbd0299a60bfb5d5e277fdf100037c7ded07 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 7c86a46e32d043247c4ab330035f7aae6d2284dfe2211b9683a6eb74b293859a all runs: crashed: kernel BUG in ocfs2_remove_extent representative crash: kernel BUG in ocfs2_remove_extent, types: [BUG] # git bisect good 6dfafbd0299a60bfb5d5e277fdf100037c7ded07 Bisecting: 3574 revisions left to test after this (roughly 12 steps) [0cac5ce06e524755b3dac1e0a060b05992076d93] Merge tag 'soc-dt-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc determine whether the revision contains the guilty commit revision be48bcf004f9d0c9207ff21d0edb3b42f253829e crashed and is reachable testing commit 0cac5ce06e524755b3dac1e0a060b05992076d93 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 4960cd4d808a488885e171b5b9a9298f5e4f73da4ff78f74a4a5b47b63f86db1 all runs: crashed: kernel BUG in ocfs2_remove_extent representative crash: kernel BUG in ocfs2_remove_extent, types: [BUG] # git bisect good 0cac5ce06e524755b3dac1e0a060b05992076d93 Bisecting: 1842 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 be48bcf004f9d0c9207ff21d0edb3b42f253829e 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: 5b29250ea45d387829a4455943f0c3a1a2a33f38a23413f28fe05fdfa2deff8e all runs: OK false negative chance: 0.000 # git bisect bad 08bfcf4ff9d39228150a757803fc02dffce84ab0 Bisecting: 857 revisions left to test after this (roughly 10 steps) [509d3f45847627f4c5cdce004c3ec79262b5239c] Merge tag 'mm-nonmm-stable-2025-12-06-11-14' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm determine whether the revision contains the guilty commit revision bfe62db5422b1a5f25752bd0877a097d436d876d crashed and is reachable testing commit 509d3f45847627f4c5cdce004c3ec79262b5239c gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: d984719ee113ba720fc502f70b87fdf1fa263d2786f28c77a3c2a6147686a060 all runs: OK false negative chance: 0.000 # git bisect bad 509d3f45847627f4c5cdce004c3ec79262b5239c Bisecting: 423 revisions left to test after this (roughly 9 steps) [416f99c3b16f582a3fc6d64a1f77f39d94b76de5] Merge tag 'driver-core-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core determine whether the revision contains the guilty commit revision be48bcf004f9d0c9207ff21d0edb3b42f253829e crashed and is reachable testing commit 416f99c3b16f582a3fc6d64a1f77f39d94b76de5 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: b48b1b633c0a6408ac1cd23cc25aa95212c5c5a3038130aef0f7448f34dfd879 all runs: crashed: kernel BUG in ocfs2_remove_extent representative crash: kernel BUG in ocfs2_remove_extent, types: [BUG] # git bisect good 416f99c3b16f582a3fc6d64a1f77f39d94b76de5 Bisecting: 217 revisions left to test after this (roughly 8 steps) [1a68aefc710a9f5486c90c87f0424d4912429adb] Merge tag 'for-linus-6.19-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip determine whether the revision contains the guilty commit revision 416f99c3b16f582a3fc6d64a1f77f39d94b76de5 crashed and is reachable testing commit 1a68aefc710a9f5486c90c87f0424d4912429adb gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: bb8d021e86f714fe59b104bcd92b7fe81238e261214a29a4e347917c9829ac5e all runs: crashed: kernel BUG in ocfs2_remove_extent representative crash: kernel BUG in ocfs2_remove_extent, types: [BUG] # git bisect good 1a68aefc710a9f5486c90c87f0424d4912429adb Bisecting: 108 revisions left to test after this (roughly 7 steps) [7bd3643f94a357863beef646b85cf10292398629] kho: add Kconfig option to enable KHO by default determine whether the revision contains the guilty commit revision be48bcf004f9d0c9207ff21d0edb3b42f253829e crashed and is reachable testing commit 7bd3643f94a357863beef646b85cf10292398629 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: ed19d83d01cf8db0a814beac78e016143ef05fcbfafcd9fb626d34073dec8344 all runs: OK false negative chance: 0.000 # git bisect bad 7bd3643f94a357863beef646b85cf10292398629 Bisecting: 54 revisions left to test after this (roughly 6 steps) [d10bb374c41e4c4dced04ae7d2fe2d782a5858a0] lib: mul_u64_u64_div_u64(): optimise the divide code determine whether the revision contains the guilty commit revision be48bcf004f9d0c9207ff21d0edb3b42f253829e crashed and is reachable testing commit d10bb374c41e4c4dced04ae7d2fe2d782a5858a0 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: d977902c414f5f0a7764139ce5b7264b4c573c49dbe69e5cd9cdd5d9b50eb05c all runs: OK false negative chance: 0.000 # git bisect bad d10bb374c41e4c4dced04ae7d2fe2d782a5858a0 Bisecting: 26 revisions left to test after this (roughly 5 steps) [6e89373cec09af28dd54fc5eed00cde34992f8e2] ocfs2: convert to host endian in ocfs2_validate_inode_block determine whether the revision contains the guilty commit revision be48bcf004f9d0c9207ff21d0edb3b42f253829e crashed and is reachable testing commit 6e89373cec09af28dd54fc5eed00cde34992f8e2 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 864091cd3de120c7b24688b608632ac53a5c1a51fe45881aec5f981778b913cf all runs: crashed: kernel BUG in ocfs2_remove_extent representative crash: kernel BUG in ocfs2_remove_extent, types: [BUG] # git bisect good 6e89373cec09af28dd54fc5eed00cde34992f8e2 Bisecting: 13 revisions left to test after this (roughly 4 steps) [9125163273f8033af5d38907b483c1d9f99d781b] panic: sys_info: factor out read and write handlers determine whether the revision contains the guilty commit revision be48bcf004f9d0c9207ff21d0edb3b42f253829e crashed and is reachable testing commit 9125163273f8033af5d38907b483c1d9f99d781b gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: b4651b6c307a31997645bed81bfee8c9ea8285b781ee66c004eaacaa6feb7991 all runs: crashed: kernel BUG in ocfs2_remove_extent representative crash: kernel BUG in ocfs2_remove_extent, types: [BUG] # git bisect good 9125163273f8033af5d38907b483c1d9f99d781b Bisecting: 6 revisions left to test after this (roughly 3 steps) [5944f875ac27cae8b831206aef011a444efa637d] lib: mul_u64_u64_div_u64(): rename parameter 'c' to 'd' determine whether the revision contains the guilty commit revision 9125163273f8033af5d38907b483c1d9f99d781b crashed and is reachable testing commit 5944f875ac27cae8b831206aef011a444efa637d gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: dab92c7e864b167e7b6456dceb8c5e432e4e70c6407f7922e181ec22510f7c0d all runs: OK false negative chance: 0.000 # git bisect bad 5944f875ac27cae8b831206aef011a444efa637d Bisecting: 3 revisions left to test after this (roughly 2 steps) [7f37d88f5cb32fff454f12cd99444686482ca23b] lib/Kconfig.debug: cleanup CONFIG_DEBUG_SECTION_MISMATCH help text determine whether the revision contains the guilty commit revision 6e89373cec09af28dd54fc5eed00cde34992f8e2 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: 2fb18c4a69b971bbdf66616f8646533d6c8b81484770d3e069742c65038c2da3 all runs: OK false negative chance: 0.000 # git bisect bad 7f37d88f5cb32fff454f12cd99444686482ca23b Bisecting: 0 revisions left to test after this (roughly 1 step) [93ce0ff117b0c468961d7c296a03ad57e1e8da9f] ocfs2: validate cl_bpc in allocator inodes to prevent divide-by-zero determine whether the revision contains the guilty commit revision 6e89373cec09af28dd54fc5eed00cde34992f8e2 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: e041b1988911dbc9b84dacdbcd5b74e27d865c40ff689a39ca051a0c6c030b7f all runs: OK false negative chance: 0.000 # git bisect bad 93ce0ff117b0c468961d7c296a03ad57e1e8da9f Bisecting: 0 revisions left to test after this (roughly 0 steps) [e1c70505ee8158c1108340d9cd67182ade93af4a] ocfs2: add extra consistency checks for chain allocator dinodes determine whether the revision contains the guilty commit revision be48bcf004f9d0c9207ff21d0edb3b42f253829e 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: 0b28e9cd24e85cf1146e18017f2467298b8685f71ccf3fe2b97e2d624e50ebe5 all runs: OK false negative chance: 0.000 # git bisect bad e1c70505ee8158c1108340d9cd67182ade93af4a e1c70505ee8158c1108340d9cd67182ade93af4a is the first bad commit commit e1c70505ee8158c1108340d9cd67182ade93af4a Author: Dmitry Antipov Date: Thu Oct 30 18:30:02 2025 +0300 ocfs2: add extra consistency checks for chain allocator dinodes When validating chain allocator dinode in 'ocfs2_validate_inode_block()', add an extra checks whether a) the maximum amount of chain records in 'struct ocfs2_chain_list' matches the value calculated based on the filesystem block size, and b) the next free slot index is within the valid range. Link: https://lkml.kernel.org/r/20251030153003.1934585-1-dmantipov@yandex.ru Signed-off-by: Dmitry Antipov Reported-by: syzbot+77026564530dbc29b854@syzkaller.appspotmail.com Closes: https://syzkaller.appspot.com/bug?extid=77026564530dbc29b854 Reported-by: syzbot+5054473a31f78f735416@syzkaller.appspotmail.com Closes: https://syzkaller.appspot.com/bug?extid=5054473a31f78f735416 Suggested-by: Joseph Qi Reviewed-by: Joseph Qi Cc: Junxiao Bi Cc: Jun Piao Cc: Deepanshu Kartikey Cc: Heming Zhao Cc: Joel Becker Cc: Mark Fasheh Signed-off-by: Andrew Morton fs/ocfs2/inode.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) accumulated error probability: 0.00 culprit signature: 0b28e9cd24e85cf1146e18017f2467298b8685f71ccf3fe2b97e2d624e50ebe5 parent signature: b4651b6c307a31997645bed81bfee8c9ea8285b781ee66c004eaacaa6feb7991 revisions tested: 23, total time: 8h22m7.950097006s (build: 5h26m52.970060521s, test: 2h16m57.743662801s) first good commit: e1c70505ee8158c1108340d9cd67182ade93af4a ocfs2: add extra consistency checks for chain allocator dinodes recipients (to): ["akpm@linux-foundation.org" "dmantipov@yandex.ru" "joseph.qi@linux.alibaba.com"] recipients (cc): []