ci2 starts bisection 2025-05-13 06:23:50.589714971 +0000 UTC m=+50758.337934111 bisecting fixing commit since 0c935c049b5c196b83b968c72d348ae6fff83ea2 building syzkaller on 4c6ac32f33aa00c680c8f4656d1fbf2887f390f1 ensuring issue is reproducible on original commit 0c935c049b5c196b83b968c72d348ae6fff83ea2 testing commit 0c935c049b5c196b83b968c72d348ae6fff83ea2 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6c7caff35ff8e22e838b60882808d48a79d7f37a449511c00ce9673f22da2660 all runs: crashed: KASAN: use-after-free Read in qd_unlock representative crash: KASAN: use-after-free Read in qd_unlock, types: [KASAN] check whether we can drop unnecessary instrumentation disabling configs for [LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP HANG], they are not needed testing commit 0c935c049b5c196b83b968c72d348ae6fff83ea2 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b67a5784a95f16088492aa40008cf6f23956249d47a410530fd99daf35f77017 all runs: crashed: KASAN: use-after-free Read in qd_unlock representative crash: KASAN: use-after-free Read in qd_unlock, types: [KASAN] the bug reproduces without the instrumentation disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed kconfig minimization: base=3707 full=7305 leaves diff=2040 split chunks (needed=false): <2040> split chunk #0 of len 2040 into 5 parts testing without sub-chunk 1/5 disabling configs for [UBSAN BUG LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed testing commit 0c935c049b5c196b83b968c72d348ae6fff83ea2 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 8c4f7b1c1f8e4a67800dac26cb67dcf9fb751fa9d1a0642bb586eaed8bac8239 all runs: crashed: KASAN: use-after-free Read in qd_unlock representative crash: KASAN: use-after-free Read in qd_unlock, types: [KASAN] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [UBSAN BUG LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed testing commit 0c935c049b5c196b83b968c72d348ae6fff83ea2 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b82bc7e59fc6346e4f12fe54f4de8f6a08a0aa1d510d762b6a16649c27ccd114 all runs: OK false negative chance: 0.000 testing without sub-chunk 3/5 disabling configs for [HANG LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP], they are not needed testing commit 0c935c049b5c196b83b968c72d348ae6fff83ea2 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: e3f6e71068d3227d869f3f9a4804cc55e92f11d23100b4dafc48780076829c70 all runs: crashed: KASAN: use-after-free Read in qd_unlock representative crash: KASAN: use-after-free Read in qd_unlock, types: [KASAN] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed testing commit 0c935c049b5c196b83b968c72d348ae6fff83ea2 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 2e4c6638e23b1944d6bcb14ac6e86ebbdf9d28b73347be94d12a419fae3dc7a7 all runs: OK false negative chance: 0.000 testing without sub-chunk 5/5 disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed testing commit 0c935c049b5c196b83b968c72d348ae6fff83ea2 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 533c4c55d8b321ccdd342a11ccd8ce2140635ef7c75632c6c0f85c14f91e55fc all runs: crashed: KASAN: use-after-free Read in qd_unlock representative crash: KASAN: use-after-free Read in qd_unlock, types: [KASAN] the chunk can be dropped minimized to 816 configs; suspects: [6LOWPAN ACPI_WMI AF_RXRPC ARCH_ENABLE_MEMORY_HOTREMOVE ASUS_WMI ASYMMETRIC_TPM_KEY_SUBTYPE ATM AX25 BXT_WC_PMIC_OPREGION CFG80211 CHARGER_BQ24190 CMA DAX DAX_DRIVER DLM DRM DRM_FBDEV_EMULATION DRM_UDL DRM_VGEM DRM_VIRTIO_GPU DRM_VKMS DRM_VMWGFX DRM_VMWGFX_FBCON DRM_VRAM_HELPER DUMMY DVB_AF9013 DVB_AF9033 DVB_AS102 DVB_AS102_FE DVB_B2C2_FLEXCOP DVB_B2C2_FLEXCOP_USB DVB_CORE DVB_DIB3000MB DVB_DIB3000MC DVB_EC100 DVB_GP8PSK_FE DVB_RTL2830 DVB_RTL2832 DVB_RTL2832_SDR DVB_TEST_DRIVERS DVB_TTUSB_BUDGET DVB_TTUSB_DEC DVB_USB DVB_USB_A800 DVB_USB_AF9005 DVB_USB_AF9005_REMOTE DVB_USB_AF9015 DVB_USB_AF9035 DVB_USB_ANYSEE DVB_USB_AU6610 DVB_USB_AZ6007 DVB_USB_AZ6027 DVB_USB_CE6230 DVB_USB_CINERGY_T2 DVB_USB_CXUSB DVB_USB_CXUSB_ANALOG DVB_USB_DIB0700 DVB_USB_DIB3000MC DVB_USB_DIBUSB_MB DVB_USB_DIBUSB_MC DVB_USB_DIGITV DVB_USB_DTT200U DVB_USB_DTV5100 DVB_USB_DVBSKY DVB_USB_DW2102 DVB_USB_EC168 DVB_USB_GL861 DVB_USB_GP8PSK DVB_USB_LME2510 DVB_USB_M920X DVB_USB_MXL111SF DVB_USB_NOVA_T_USB2 DVB_USB_OPERA1 DVB_USB_PCTV452E DVB_USB_RTL28XXU DVB_USB_TECHNISAT_USB2 DVB_USB_TTUSB2 DVB_USB_UMT_010 DVB_USB_V2 DVB_USB_VP702X DVB_USB_VP7045 DVB_USB_ZD1301 DVB_VIDTV DVB_ZL10353 ECRYPT_FS ECRYPT_FS_MESSAGING EDAC EEPROM_93CX6 EFS_FS ENCRYPTED_KEYS EQUALIZER EROFS_FS EROFS_FS_POSIX_ACL EROFS_FS_SECURITY EROFS_FS_XATTR EROFS_FS_ZIP EVM EVM_ADD_XATTRS EVM_ATTR_FSUUID EXFAT_FS EXPORTFS_BLOCK_OPS EXT3_FS EXT3_FS_POSIX_ACL EXT3_FS_SECURITY EXTCON EXTCON_USBC_TUSB320 F2FS_CHECK_FS F2FS_FAULT_INJECTION F2FS_FS F2FS_FS_COMPRESSION F2FS_FS_LZ4 F2FS_FS_LZ4HC F2FS_FS_LZO F2FS_FS_LZORLE F2FS_FS_POSIX_ACL F2FS_FS_SECURITY F2FS_FS_XATTR F2FS_FS_ZSTD F2FS_STAT_FS FANOTIFY FANOTIFY_ACCESS_PERMISSIONS FB FB_BOOT_VESA_SUPPORT FB_CFB_COPYAREA FB_CFB_FILLRECT FB_CFB_IMAGEBLIT FB_CMDLINE FB_DEFERRED_IO FB_NOTIFY FB_SYS_COPYAREA FB_SYS_FILLRECT FB_SYS_FOPS FB_SYS_IMAGEBLIT FB_TILEBLITTING FB_VESA FB_VGA16 FB_VIRTUAL FDDI FIREWIRE FIREWIRE_NET FIREWIRE_OHCI FIREWIRE_SBP2 FONT_8x16 FONT_8x8 FONT_SUPPORT FRAMEBUFFER_CONSOLE FRAMEBUFFER_CONSOLE_DETECT_PRIMARY FRAMEBUFFER_CONSOLE_ROTATION FS_DAX FS_DAX_PMD FS_ENCRYPTION FS_ENCRYPTION_ALGS FS_VERITY FS_VERITY_BUILTIN_SIGNATURES FTL FUSE_DAX FUSE_FS FW_LOADER_COMPRESS FW_LOADER_PAGED_BUF FW_LOADER_USER_HELPER FW_LOADER_USER_HELPER_FALLBACK GACT_PROB GARP GENERIC_PHY GENEVE GFS2_FS GFS2_FS_LOCKING_DLM GOOGLE_COREBOOT_TABLE GOOGLE_FIRMWARE GOOGLE_MEMCONSOLE GOOGLE_MEMCONSOLE_COREBOOT GOOGLE_VPD GPIOLIB GPIOLIB_IRQCHIP GPIO_ACPI GPIO_DLN2 GPIO_VIPERBOARD GREENASIA_FF GREYBUS GREYBUS_BRIDGED_PHY GREYBUS_ES2 GREYBUS_HID GREYBUS_USB GTP GVE HAMRADIO HAVE_ARCH_USERFAULTFD_MINOR HAVE_ARCH_USERFAULTFD_WP HAVE_BOOTMEM_INFO_NODE HAVE_KVM_CPU_RELAX_INTERCEPT HAVE_KVM_EVENTFD HAVE_KVM_IRQCHIP HAVE_KVM_IRQFD HAVE_KVM_IRQ_BYPASS HAVE_KVM_IRQ_ROUTING HAVE_KVM_MSI HAVE_KVM_NO_POLL HAVE_KVM_PM_NOTIFIER HAVE_SCHED_AVG_IRQ HDLC HDLC_CISCO HDLC_FR HDLC_PPP HDLC_RAW HDLC_RAW_ETH HDLC_X25 HDMI HFSPLUS_FS HFS_FS HID_ACCUTOUCH HID_ACRUX HID_ACRUX_FF HID_ALPS HID_APPLEIR HID_ASUS HID_AUREAL HID_BATTERY_STRENGTH HID_BETOP_FF HID_BIGBEN_FF HID_CMEDIA HID_CORSAIR HID_COUGAR HID_CP2112 HID_CREATIVE_SB0540 HID_ELAN HID_ELECOM HID_ELO HID_EMS_FF HID_FT260 HID_GEMBIRD HID_GFRM HID_GLORIOUS HID_GREENASIA HID_GT683R HID_HOLTEK HID_ICADE HID_JABRA HID_KEYTOUCH HID_KYE HID_LCPOWER HID_LED HID_LENOVO HID_LOGITECH_DJ HID_LOGITECH_HIDPP HID_MACALLY HID_MAGICMOUSE HID_MALTRON HID_MAYFLASH HID_MCP2221 HID_MULTITOUCH HID_NTI HID_ORTEK HID_PENMOUNT HID_PICOLCD HID_PICOLCD_BACKLIGHT HID_PICOLCD_CIR HID_PICOLCD_FB HID_PICOLCD_LCD HID_PICOLCD_LEDS HID_PLANTRONICS HID_PLAYSTATION HID_PRIMAX HID_PRODIKEYS HID_RETRODE HID_RMI HID_ROCCAT HID_SAITEK HID_SEMITEK HID_SENSOR_ACCEL_3D HID_SENSOR_ALS HID_SENSOR_CUSTOM_INTEL_HINGE HID_SENSOR_CUSTOM_SENSOR HID_SENSOR_DEVICE_ROTATION HID_SENSOR_GYRO_3D HID_SENSOR_HUB HID_SENSOR_HUMIDITY HID_SENSOR_IIO_COMMON HID_SENSOR_IIO_TRIGGER HID_SENSOR_INCLINOMETER_3D HID_SENSOR_MAGNETOMETER_3D HID_SENSOR_PRESS HID_SENSOR_PROX HID_SENSOR_TEMP HID_SMARTJOYPLUS HID_SPEEDLINK HID_STEAM HID_STEELSERIES HID_THINGM HID_THRUSTMASTER HID_TIVO HID_TWINHAN HID_U2FZERO HID_UCLOGIC HID_UDRAW_PS3 HID_VIEWSONIC HID_VIVALDI HID_WACOM HID_WALTOP HID_WIIMOTE HID_XINMO HID_ZYDACRON HMM_MIRROR HOLTEK_FF HOTPLUG_PCI_PCIE HPET_MMAP HPET_MMAP_DEFAULT HPFS_FS I2C_ALGOBIT I2C_CHARDEV I2C_CP2615 I2C_DIOLAN_U2C I2C_DLN2 I2C_MUX I2C_MUX_REG I2C_ROBOTFUZZ_OSIF I2C_SI4713 I2C_SLAVE I2C_SLAVE_EEPROM I2C_TINY_USB I2C_VIPERBOARD IEEE802154 IEEE802154_6LOWPAN IEEE802154_ATUSB IEEE802154_DRIVERS IEEE802154_HWSIM IEEE802154_NL802154_EXPERIMENTAL IEEE802154_SOCKET IFB IIO IIO_BUFFER IIO_KFIFO_BUF IIO_TRIGGER IIO_TRIGGERED_BUFFER IKCONFIG IKCONFIG_PROC IMA IMA_APPRAISE IMA_APPRAISE_MODSIG IMA_DEFAULT_HASH_SHA256 IMA_LSM_RULES IMA_MEASURE_ASYMMETRIC_KEYS IMA_NG_TEMPLATE IMA_QUEUE_EARLY_BOOT_KEYS IMA_READ_POLICY IMA_WRITE_POLICY INET6_ESPINTCP INET6_ESP_OFFLOAD INET6_IPCOMP INET6_TUNNEL INET6_XFRM_TUNNEL INET_AH INET_DCCP_DIAG INET_DIAG INET_DIAG_DESTROY INET_ESP INET_ESPINTCP INET_ESP_OFFLOAD INET_IPCOMP INET_MPTCP_DIAG INET_RAW_DIAG INET_SCTP_DIAG INET_TCP_DIAG INET_UDP_DIAG INET_XFRM_TUNNEL INFINIBAND INFINIBAND_ADDR_TRANS INFINIBAND_ADDR_TRANS_CONFIGFS INFINIBAND_IPOIB INFINIBAND_IPOIB_CM INFINIBAND_IPOIB_DEBUG INFINIBAND_ISER INFINIBAND_ON_DEMAND_PAGING INFINIBAND_RTRS INFINIBAND_SRP INFINIBAND_USER_ACCESS INFINIBAND_USER_MAD INFINIBAND_USER_MEM INFINIBAND_VIRT_DMA INPUT_ATI_REMOTE2 INPUT_CM109 INPUT_IMS_PCU INPUT_JOYDEV INPUT_KEYSPAN_REMOTE INPUT_LEDS INPUT_MOUSEDEV INPUT_MOUSEDEV_PSAUX INPUT_POWERMATE INPUT_TABLET INPUT_TOUCHSCREEN INPUT_UINPUT INPUT_YEALINK INTEGRITY INTEGRITY_ASYMMETRIC_KEYS INTEGRITY_AUDIT INTEGRITY_SIGNATURE INTEGRITY_TRUSTED_KEYRING INTEL_CHT_INT33FE INTEL_IDMA64 INTEL_IOATDMA INTEL_IOMMU_DEFAULT_ON INTEL_IOMMU_SVM INTEL_SCU_IPC INTEL_SOC_PMIC_BXTWC INTERVAL_TREE IOMMU_SVA_LIB IP6_NF_MATCH_AH IP6_NF_MATCH_EUI64 IP6_NF_MATCH_FRAG IP6_NF_MATCH_HL IP6_NF_MATCH_MH IP6_NF_MATCH_OPTS IP6_NF_MATCH_RPFILTER IP6_NF_MATCH_RT IP6_NF_MATCH_SRH IP6_NF_NAT IP6_NF_RAW IP6_NF_SECURITY IP6_NF_TARGET_HL IP6_NF_TARGET_MASQUERADE IP6_NF_TARGET_NPT IP6_NF_TARGET_SYNPROXY IPV6_FOU IPV6_FOU_TUNNEL IPV6_GRE IPV6_ILA IPV6_MIP6 IPV6_MROUTE IPV6_MROUTE_MULTIPLE_TABLES IPV6_MULTIPLE_TABLES IPV6_OPTIMISTIC_DAD IPV6_PIMSM_V2 IPV6_ROUTER_PREF IPV6_ROUTE_INFO IPV6_RPL_LWTUNNEL IPV6_SEG6_BPF IPV6_SEG6_HMAC IPV6_SEG6_LWTUNNEL IPV6_SIT_6RD IPV6_SUBTREES IPV6_TUNNEL IPV6_VTI IPVLAN IPVLAN_L3S IPVTAP IP_DCCP IP_DCCP_CCID3 IP_DCCP_TFRC_LIB IP_FIB_TRIE_STATS IP_MROUTE_MULTIPLE_TABLES IP_NF_ARPFILTER IP_NF_ARPTABLES IP_NF_ARP_MANGLE IP_NF_MATCH_AH IP_NF_MATCH_ECN IP_NF_MATCH_RPFILTER IP_NF_MATCH_TTL IP_NF_RAW IP_NF_SECURITY IP_NF_TARGET_CLUSTERIP IP_NF_TARGET_ECN IP_NF_TARGET_NETMAP IP_NF_TARGET_REDIRECT IP_NF_TARGET_SYNPROXY IP_NF_TARGET_TTL IP_ROUTE_CLASSID IP_SCTP IP_SET IP_SET_BITMAP_IP IP_SET_BITMAP_IPMAC IP_SET_BITMAP_PORT IP_SET_HASH_IP IP_SET_HASH_IPMAC IP_SET_HASH_IPMARK IP_SET_HASH_IPPORT IP_SET_HASH_IPPORTIP IP_SET_HASH_IPPORTNET IP_SET_HASH_MAC IP_SET_HASH_NET IP_SET_HASH_NETIFACE IP_SET_HASH_NETNET IP_SET_HASH_NETPORT IP_SET_HASH_NETPORTNET IP_SET_LIST_SET IP_VS IP_VS_DH IP_VS_FO IP_VS_FTP IP_VS_IPV6 IP_VS_LBLC IP_VS_LBLCR IP_VS_LC IP_VS_MH IP_VS_NFCT IP_VS_NQ IP_VS_OVF IP_VS_PE_SIP IP_VS_PROTO_AH IP_VS_PROTO_AH_ESP IP_VS_PROTO_ESP IP_VS_PROTO_SCTP IP_VS_PROTO_TCP IP_VS_PROTO_UDP IP_VS_RR IP_VS_SED IP_VS_SH IP_VS_TWOS IP_VS_WLC IP_VS_WRR IRQ_BYPASS_MANAGER IRQ_POLL IRQ_TIME_ACCOUNTING IR_IGORPLUGUSB IR_IGUANA IR_IMON IR_IMON_RAW IR_MCEUSB IR_REDRAT3 L2TP LAPB LCD_CLASS_DEVICE LIBCRC32C LIBNVDIMM MAC802154 MEDIA_COMMON_OPTIONS MEDIA_DIGITAL_TV_SUPPORT MEDIA_PLATFORM_SUPPORT MEDIA_RADIO_SUPPORT MEDIA_SDR_SUPPORT MEDIA_SUPPORT MEDIA_TEST_SUPPORT MEDIA_USB_SUPPORT MEMORY_HOTPLUG MEMORY_HOTREMOVE MFD_DLN2 MFD_INTEL_PMC_BXT MFD_MT6360 MFD_RETU MFD_VIPERBOARD MMC MPTCP MTD MTD_UBI NETFILTER_ADVANCED NETFILTER_CONNCOUNT NET_ACT_GACT NET_ACT_MIRRED NET_IPGRE NET_IPGRE_DEMUX NFS_V4_1 NFT_FWD_NETDEV NF_TABLES NF_TABLES_NETDEV 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_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 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 PMIC_OPREGION 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_DYNAMIC PREEMPT_NOTIFIERS PREEMPT_RCU PRISM2_USB PROC_CHILDREN PROC_MEM_ALWAYS_FORCE 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_SI4713 RADIO_TEA575X RAID6_PQ RAID_ATTRS RAS 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 REGULATOR REGULATOR_FIXED_VOLTAGE 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 SENSORS_AQUACOMPUTER_D5NEXT SENSORS_CORSAIR_CPRO SENSORS_CORSAIR_PSU SENSORS_NZXT_KRAKEN2 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_COMMON 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_LED SND_CTL_VALIDATION 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_CGROUP_DATA 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_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 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_RCU TASKS_RCU_GENERIC 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 TPM_KEY_PARSER TRANSPARENT_HUGEPAGE TRANSPARENT_HUGEPAGE_MADVISE TRUSTED_KEYS TTPCI_EEPROM TTY_PRINTK TUN_VNET_CROSS_LE TWL4030_CORE TYPEC TYPEC_DP_ALTMODE TYPEC_FUSB302 TYPEC_HD3SS3220 TYPEC_MT6360 TYPEC_MUX_INTEL_PMC TYPEC_MUX_PI3USB30532 TYPEC_NVIDIA_ALTMODE TYPEC_RT1711H TYPEC_STUSB160X TYPEC_TCPCI TYPEC_TCPCI_MAXIM TYPEC_TCPM TYPEC_TPS6598X TYPEC_UCSI TYPEC_WCOVE 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 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_CDNS3 USB_CDNS3_GADGET USB_CDNS3_HOST USB_CDNS3_PCI_WRAP USB_CDNSP_GADGET USB_CDNSP_HOST USB_CDNSP_PCI USB_CDNS_HOST USB_CDNS_SUPPORT USB_CHAOSKEY USB_CHIPIDEA USB_CHIPIDEA_GENERIC USB_CHIPIDEA_HOST USB_CHIPIDEA_IMX USB_CHIPIDEA_MSM USB_CHIPIDEA_PCI USB_CHIPIDEA_TEGRA USB_CHIPIDEA_UDC USB_CONFIGFS USB_CONFIGFS_ACM USB_CONFIGFS_ECM USB_CONFIGFS_ECM_SUBSET USB_CONFIGFS_EEM USB_CONFIGFS_F_FS USB_DWC2 USB_GADGET USB_MUSB_HDRC USB_NET_CDC_SUBSET USB_ROLES_INTEL_XHCI USB_ROLE_SWITCH USB_STORAGE_REALTEK USB_ULPI_BUS USB_USBNET VIDEO_DEV VIDEO_V4L2 VIRTIO_FS VXLAN WAN WIRELESS WLAN ZONE_DEVICE] disabling configs for [UBSAN BUG LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed determining the merge base between 0c935c049b5c196b83b968c72d348ae6fff83ea2 and e9565e23cd89d4d5cd4388f8742130be1d6f182d 8bb7eca972ad531c9b149c0a51ab43a417385813/Linux 5.15 is a merge base, check if it has the bug testing commit 8bb7eca972ad531c9b149c0a51ab43a417385813 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 2b3d1f63cfeaaa3aa90decbfb48c76670e9e051e1c0e141166b63db9a8dfc65f all runs: crashed: KASAN: use-after-free Read in qd_unlock representative crash: KASAN: use-after-free Read in qd_unlock, types: [KASAN] testing current HEAD e9565e23cd89d4d5cd4388f8742130be1d6f182d testing commit e9565e23cd89d4d5cd4388f8742130be1d6f182d gcc compiler: Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2 kernel signature: be13e5e323a90c7f09e3baa1a849b5ab5be8ba49603e43e4667d3f0b58898c7c all runs: OK false negative chance: 0.000 # git bisect start e9565e23cd89d4d5cd4388f8742130be1d6f182d 8bb7eca972ad531c9b149c0a51ab43a417385813 Bisecting: 153966 revisions left to test after this (roughly 17 steps) [15ac468614e5e4fee82e1eb32568f427b0e51adc] Merge tag 'media/v6.5-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit 15ac468614e5e4fee82e1eb32568f427b0e51adc gcc compiler: Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2 kernel signature: 3432d0c966618e6536f8a2114e33456f25328fed7704a1e9ecc31251b19bb2b8 all runs: crashed: KASAN: slab-use-after-free Read in qd_unlock representative crash: KASAN: slab-use-after-free Read in qd_unlock, types: [KASAN] # git bisect good 15ac468614e5e4fee82e1eb32568f427b0e51adc Bisecting: 77043 revisions left to test after this (roughly 16 steps) [7991c92f4cc50b971fcb4d05087e490dc47a6857] Merge tag 'ext4_for_linus-6.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4 determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit 7991c92f4cc50b971fcb4d05087e490dc47a6857 gcc compiler: Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2 kernel signature: 72d2f825bc1c3d9cdf25b4ab5d508be69cb635b62bac89c40ae8d56602e5f2c8 all runs: OK false negative chance: 0.000 # git bisect bad 7991c92f4cc50b971fcb4d05087e490dc47a6857 Bisecting: 38491 revisions left to test after this (roughly 15 steps) [8158a50f9058ce882a6a020c41cef6bae2c3eae3] Merge tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit 8158a50f9058ce882a6a020c41cef6bae2c3eae3 gcc compiler: Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2 kernel signature: c92e0123695ac407e697033933669a2e7f7bf4be3949bfb398225a43b0aa1aed all runs: OK false negative chance: 0.000 # git bisect bad 8158a50f9058ce882a6a020c41cef6bae2c3eae3 Bisecting: 19137 revisions left to test after this (roughly 14 steps) [041c3466f39d7073bbc7fb91c4e5d14170d5eb08] Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit 041c3466f39d7073bbc7fb91c4e5d14170d5eb08 gcc compiler: Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2 kernel signature: 0dd754a605903868a1b8e812d522b4ae6e7e19437176d63cd3f2812e652346e6 run #0: crashed: KASAN: slab-use-after-free Read in reweight_entity run #1: OK run #2: OK run #3: OK run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK representative crash: KASAN: slab-use-after-free Read in reweight_entity, types: [KASAN] unable to determine the verdict: 9 good runs (wanted 5), for bad wanted 5 in total, got 10 # git bisect skip 041c3466f39d7073bbc7fb91c4e5d14170d5eb08 Bisecting: 19137 revisions left to test after this (roughly 14 steps) [0756384fb1bd38adb2ebcfd1307422f433a1d772] vxlan: Fix nexthop hash size determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit 0756384fb1bd38adb2ebcfd1307422f433a1d772 gcc compiler: Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2 kernel signature: 1e2268f5c98ce79464cf993f0e1a8cb523fb6d3ae3660f2cf3179bad90c0f2db all runs: crashed: KASAN: slab-use-after-free Read in qd_unlock representative crash: KASAN: slab-use-after-free Read in qd_unlock, types: [KASAN] # git bisect good 0756384fb1bd38adb2ebcfd1307422f433a1d772 Bisecting: 18407 revisions left to test after this (roughly 14 steps) [7753c2f0a857bfa6501e67deee03988dd0bcaae7] net/tcp: Add option for TCP-AO to (not) hash header determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit 7753c2f0a857bfa6501e67deee03988dd0bcaae7 gcc compiler: Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2 kernel signature: 120678b61530bfd06af27d636b128ca0602fbc3a5f2f14ca7620ba6a5ae454e4 all runs: OK false negative chance: 0.000 # git bisect bad 7753c2f0a857bfa6501e67deee03988dd0bcaae7 Bisecting: 8919 revisions left to test after this (roughly 13 steps) [0e72db77672ff4758a31fb5259c754a7bb229751] Merge tag 'soc-dt-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc determine whether the revision contains the guilty commit revision 15ac468614e5e4fee82e1eb32568f427b0e51adc crashed and is reachable testing commit 0e72db77672ff4758a31fb5259c754a7bb229751 gcc compiler: Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2 kernel signature: 74694e2fec9cda34a55d843605c3076a498b8ce468ed8224a2350ad4f018a9c8 all runs: crashed: KASAN: slab-use-after-free Read in qd_unlock representative crash: KASAN: slab-use-after-free Read in qd_unlock, types: [KASAN] # git bisect good 0e72db77672ff4758a31fb5259c754a7bb229751 Bisecting: 4429 revisions left to test after this (roughly 12 steps) [73be7fb14e83d24383f840a22f24d3ed222ca319] Merge tag 'net-6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net determine whether the revision contains the guilty commit revision 0e72db77672ff4758a31fb5259c754a7bb229751 crashed and is reachable testing commit 73be7fb14e83d24383f840a22f24d3ed222ca319 gcc compiler: Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2 kernel signature: 932f1f7f26892bc843b53a9f61f40a864d6b388a572a16d004c8297f726a70ca all runs: OK false negative chance: 0.000 # git bisect bad 73be7fb14e83d24383f840a22f24d3ed222ca319 Bisecting: 2109 revisions left to test after this (roughly 11 steps) [307d59039fb26212a84a9aa6a134a7d2bdea34ca] Merge tag 'media/v6.6-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit 307d59039fb26212a84a9aa6a134a7d2bdea34ca gcc compiler: Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2 kernel signature: 7f3a0a6328e55387b1ae85335940cb4b74b2f9d598f0f863f59d112579fd3b75 all runs: crashed: KASAN: slab-use-after-free Read in qd_unlock representative crash: KASAN: slab-use-after-free Read in qd_unlock, types: [KASAN] # git bisect good 307d59039fb26212a84a9aa6a134a7d2bdea34ca Bisecting: 1057 revisions left to test after this (roughly 10 steps) [3d904704c8a23cda6423f82aadea1336df31b864] Merge tag 'rpmsg-v6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/remoteproc/linux determine whether the revision contains the guilty commit revision 15ac468614e5e4fee82e1eb32568f427b0e51adc crashed and is reachable testing commit 3d904704c8a23cda6423f82aadea1336df31b864 gcc compiler: Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2 kernel signature: de45ca6d0bad7ff7c877bab36326ab1b52e1bd41a11323d35e110ad5d5cb3b2b all runs: crashed: KASAN: slab-use-after-free Read in qd_unlock representative crash: KASAN: slab-use-after-free Read in qd_unlock, types: [KASAN] # git bisect good 3d904704c8a23cda6423f82aadea1336df31b864 Bisecting: 527 revisions left to test after this (roughly 9 steps) [4a0fc73da97efd23a383ca839e6fe86410268f6b] Merge tag 's390-6.6-2' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux determine whether the revision contains the guilty commit revision 15ac468614e5e4fee82e1eb32568f427b0e51adc crashed and is reachable testing commit 4a0fc73da97efd23a383ca839e6fe86410268f6b gcc compiler: Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2 kernel signature: 7450ca7f2bc0491f04a9bd5f21268f27ea7fd9cccd5cb27a158509fa423d525e all runs: OK false negative chance: 0.000 # git bisect bad 4a0fc73da97efd23a383ca839e6fe86410268f6b Bisecting: 258 revisions left to test after this (roughly 8 steps) [9e310ea5c8f6f20c1b2ac50736bcd3e189931610] Merge tag 'fuse-update-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse determine whether the revision contains the guilty commit revision 307d59039fb26212a84a9aa6a134a7d2bdea34ca crashed and is reachable testing commit 9e310ea5c8f6f20c1b2ac50736bcd3e189931610 gcc compiler: Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2 kernel signature: a8a8bb3172b179e1b5756c33a270f8585f6e27d3ff6ec2c2e6e8d4d27c06e4bb all runs: crashed: KASAN: slab-use-after-free Read in qd_unlock representative crash: KASAN: slab-use-after-free Read in qd_unlock, types: [KASAN] # git bisect good 9e310ea5c8f6f20c1b2ac50736bcd3e189931610 Bisecting: 91 revisions left to test after this (roughly 7 steps) [744a759492b5c57ff24a6e8aabe47b17ad8ee964] Merge tag 'input-for-v6.6-rc0' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input determine whether the revision contains the guilty commit revision 0756384fb1bd38adb2ebcfd1307422f433a1d772 crashed and is reachable testing commit 744a759492b5c57ff24a6e8aabe47b17ad8ee964 gcc compiler: Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2 kernel signature: b9648aa9573d42d89b5055699190c88a39b5ab8517e199ebfd9e4d4b044963ed all runs: OK false negative chance: 0.000 # git bisect bad 744a759492b5c57ff24a6e8aabe47b17ad8ee964 Bisecting: 81 revisions left to test after this (roughly 6 steps) [1ac731c529cd4d6adbce134754b51ff7d822b145] Merge branch 'next' into for-linus determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit 1ac731c529cd4d6adbce134754b51ff7d822b145 gcc compiler: Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2 kernel signature: 7b9063e2702ead1863696ce4057acd183a0820b15f9a5fd641d660c8afbaa2ad all runs: crashed: KASAN: slab-use-after-free Read in qd_unlock representative crash: KASAN: slab-use-after-free Read in qd_unlock, types: [KASAN] # git bisect good 1ac731c529cd4d6adbce134754b51ff7d822b145 Bisecting: 40 revisions left to test after this (roughly 5 steps) [fce17cb0eebfb90618f0fcfbdc7f8e0aa207c81a] gfs2: Set qd_sync_gen in do_sync determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit fce17cb0eebfb90618f0fcfbdc7f8e0aa207c81a gcc compiler: Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2 kernel signature: ba413fd4859961960c4ecb171e01a356361d043d5b202c720f260c2aa025fed6 all runs: OK false negative chance: 0.000 # git bisect bad fce17cb0eebfb90618f0fcfbdc7f8e0aa207c81a Bisecting: 20 revisions left to test after this (roughly 4 steps) [f66af88e33212b57ea86da2c5d66c0d9d5c46344] gfs2: Stop using gfs2_make_fs_ro for withdraw determine whether the revision contains the guilty commit revision 15ac468614e5e4fee82e1eb32568f427b0e51adc crashed and is reachable testing commit f66af88e33212b57ea86da2c5d66c0d9d5c46344 gcc compiler: Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2 kernel signature: 1c483473e1b6a65ec5f0cf2b380c1d97efed8636808233252fae7d4df105485a all runs: OK false negative chance: 0.000 # git bisect bad f66af88e33212b57ea86da2c5d66c0d9d5c46344 Bisecting: 9 revisions left to test after this (roughly 3 steps) [db77789bae7e33b458220110f189f2381f19362b] gfs2: journal flush threshold fixes and cleanup determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit db77789bae7e33b458220110f189f2381f19362b gcc compiler: Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2 kernel signature: 6365da9d497fb820f1b0a50597638e648d149c29e3856e471201045e6dad3072 all runs: crashed: KASAN: slab-use-after-free Read in qd_unlock representative crash: KASAN: slab-use-after-free Read in qd_unlock, types: [KASAN] # git bisect good db77789bae7e33b458220110f189f2381f19362b Bisecting: 4 revisions left to test after this (roughly 2 steps) [961fe3422e055d251b32a117cd8cd3d27153bc96] gfs2: Use gfs2_qd_dispose in gfs2_quota_cleanup determine whether the revision contains the guilty commit revision db77789bae7e33b458220110f189f2381f19362b crashed and is reachable testing commit 961fe3422e055d251b32a117cd8cd3d27153bc96 gcc compiler: Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2 kernel signature: f2ef2763deefd4eb689da612ebdd116231ea8e31f9e3b26c163a0d1d65db936d all runs: crashed: KASAN: slab-use-after-free Read in qd_unlock representative crash: KASAN: slab-use-after-free Read in qd_unlock, types: [KASAN] # git bisect good 961fe3422e055d251b32a117cd8cd3d27153bc96 Bisecting: 1 revision left to test after this (roughly 1 step) [bb73ae8ff394f767a8acbc99a1d682b874ba5e74] gfs2: Fix initial quota data refcount determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit bb73ae8ff394f767a8acbc99a1d682b874ba5e74 gcc compiler: Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2 failed building bb73ae8ff394f767a8acbc99a1d682b874ba5e74: fs/gfs2/quota.c:146:15: error: use of undeclared identifier 'sdp' # git bisect skip bb73ae8ff394f767a8acbc99a1d682b874ba5e74 Bisecting: 1 revision left to test after this (roughly 1 step) [fae2e73a5537e40ebae9a00e6548101e5ab2441f] gfs2: No more quota complaints after withdraw determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit fae2e73a5537e40ebae9a00e6548101e5ab2441f gcc compiler: Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2 failed building fae2e73a5537e40ebae9a00e6548101e5ab2441f: fs/gfs2/quota.c:146:15: error: use of undeclared identifier 'sdp' # git bisect skip fae2e73a5537e40ebae9a00e6548101e5ab2441f Bisecting: 1 revision left to test after this (roughly 1 step) [a475c5dd16e57c570113eccba51955b5df8bb052] gfs2: Free quota data objects synchronously determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit a475c5dd16e57c570113eccba51955b5df8bb052 gcc compiler: Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2 kernel signature: 56b134ea47bb59d798408fc53d7f6c3f822feadcf0e2d546914a94ff0c2d9c93 all runs: crashed: KASAN: slab-use-after-free Write in gfs2_qd_dealloc representative crash: KASAN: slab-use-after-free Write in gfs2_qd_dealloc, types: [KASAN] # git bisect good a475c5dd16e57c570113eccba51955b5df8bb052 f66af88e33212b57ea86da2c5d66c0d9d5c46344 is the first bad commit commit f66af88e33212b57ea86da2c5d66c0d9d5c46344 Author: Andreas Gruenbacher Date: Mon Aug 28 16:39:20 2023 +0200 gfs2: Stop using gfs2_make_fs_ro for withdraw [ 81.372851][ T5532] CPU: 1 PID: 5532 Comm: syz-executor.0 Not tainted 6.2.0-rc1-syzkaller-dirty #0 [ 81.382080][ T5532] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 81.392343][ T5532] Call Trace: [ 81.395654][ T5532] [ 81.398603][ T5532] dump_stack_lvl+0x1b1/0x290 [ 81.418421][ T5532] gfs2_assert_warn_i+0x19a/0x2e0 [ 81.423480][ T5532] gfs2_quota_cleanup+0x4c6/0x6b0 [ 81.428611][ T5532] gfs2_make_fs_ro+0x517/0x610 [ 81.457802][ T5532] gfs2_withdraw+0x609/0x1540 [ 81.481452][ T5532] gfs2_inode_refresh+0xb2d/0xf60 [ 81.506658][ T5532] gfs2_instantiate+0x15e/0x220 [ 81.511504][ T5532] gfs2_glock_wait+0x1d9/0x2a0 [ 81.516352][ T5532] do_sync+0x485/0xc80 [ 81.554943][ T5532] gfs2_quota_sync+0x3da/0x8b0 [ 81.559738][ T5532] gfs2_sync_fs+0x49/0xb0 [ 81.564063][ T5532] sync_filesystem+0xe8/0x220 [ 81.568740][ T5532] generic_shutdown_super+0x6b/0x310 [ 81.574112][ T5532] kill_block_super+0x79/0xd0 [ 81.578779][ T5532] deactivate_locked_super+0xa7/0xf0 [ 81.584064][ T5532] cleanup_mnt+0x494/0x520 [ 81.593753][ T5532] task_work_run+0x243/0x300 [ 81.608837][ T5532] exit_to_user_mode_loop+0x124/0x150 [ 81.614232][ T5532] exit_to_user_mode_prepare+0xb2/0x140 [ 81.619820][ T5532] syscall_exit_to_user_mode+0x26/0x60 [ 81.625287][ T5532] do_syscall_64+0x49/0xb0 [ 81.629710][ T5532] entry_SYSCALL_64_after_hwframe+0x63/0xcd In this backtrace, gfs2_quota_sync() takes quota data references and then calls do_sync(). Function do_sync() encounters filesystem corruption and withdraws the filesystem, which (among other things) calls gfs2_quota_cleanup(). Function gfs2_quota_cleanup() wrongly assumes that nobody is holding any quota data references anymore, and destroys all quota data objects. When gfs2_quota_sync() then resumes and dereferences the quota data objects it is holding, those objects are no longer there. Function gfs2_quota_cleanup() deals with resource deallocation and can easily be delayed until gfs2_put_super() in the case of a filesystem withdraw. In fact, most of the other work gfs2_make_fs_ro() does is unnecessary during a withdraw as well, so change signal_our_withdraw() to skip gfs2_make_fs_ro() and perform the necessary steps directly instead. Thanks to Edward Adam Davis for the initial patches. Link: https://lore.kernel.org/all/0000000000002b5e2405f14e860f@google.com Reported-by: syzbot+3f6a670108ce43356017@syzkaller.appspotmail.com Signed-off-by: Andreas Gruenbacher fs/gfs2/super.c | 9 ++------- fs/gfs2/util.c | 19 ++++++++++++++++++- 2 files changed, 20 insertions(+), 8 deletions(-) accumulated error probability: 0.00 culprit signature: 1c483473e1b6a65ec5f0cf2b380c1d97efed8636808233252fae7d4df105485a parent signature: 56b134ea47bb59d798408fc53d7f6c3f822feadcf0e2d546914a94ff0c2d9c93 revisions tested: 28, total time: 7h51m50.950300289s (build: 4h16m7.194039085s, test: 3h21m29.737029128s) first good commit: f66af88e33212b57ea86da2c5d66c0d9d5c46344 gfs2: Stop using gfs2_make_fs_ro for withdraw recipients (to): ["agruenba@redhat.com"] recipients (cc): []