ci2 starts bisection 2025-08-22 12:45:02.536649991 +0000 UTC m=+33652.299812952 bisecting cause commit starting from 3957a5720157264dcc41415fbec7c51c4000fc2d building syzkaller on bf27483f963359281b2d9b6d6efd36289f82e282 ensuring issue is reproducible on original commit 3957a5720157264dcc41415fbec7c51c4000fc2d testing commit 3957a5720157264dcc41415fbec7c51c4000fc2d gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: d245b09b9a002b97ff1446289ae0c90b472fa706a6547bea73e135a23295dba7 all runs: crashed: KASAN: global-out-of-bounds Read in z_erofs_decompress_queue representative crash: KASAN: global-out-of-bounds Read in z_erofs_decompress_queue, types: [KASAN-READ] check whether we can drop unnecessary instrumentation disabling configs for [locking atomic_sleep hang memleak ubsan bug_or_warning], they are not needed testing commit 3957a5720157264dcc41415fbec7c51c4000fc2d gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: e0c646dc94728918bf9af30796af017cfffe92dcae3a58af61c03a962ee0bbc4 all runs: crashed: KASAN: global-out-of-bounds Read in z_erofs_decompress_queue representative crash: KASAN: global-out-of-bounds Read in z_erofs_decompress_queue, types: [KASAN-READ] the bug reproduces without the instrumentation disabling configs for [hang memleak ubsan bug_or_warning locking atomic_sleep], they are not needed kconfig minimization: base=4092 full=8349 leaves diff=2173 split chunks (needed=false): <2173> split chunk #0 of len 2173 into 5 parts testing without sub-chunk 1/5 disabling configs for [bug_or_warning locking atomic_sleep hang memleak ubsan], they are not needed testing commit 3957a5720157264dcc41415fbec7c51c4000fc2d gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: f4cd5a6a735e35190bc2cb3a6c318c55a2bc47d2dc6ec4f308e8e08b5eb38dc1 all runs: crashed: KASAN: global-out-of-bounds Read in z_erofs_decompress_queue representative crash: KASAN: global-out-of-bounds Read in z_erofs_decompress_queue, types: [KASAN-READ] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [locking atomic_sleep hang memleak ubsan bug_or_warning], they are not needed testing commit 3957a5720157264dcc41415fbec7c51c4000fc2d gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: b4dcdb1a4bf56cb9c37230d8aaa92f37217fdbe7656a4045f5bffb76c8ce3b39 all runs: OK false negative chance: 0.000 testing without sub-chunk 3/5 disabling configs for [hang memleak ubsan bug_or_warning locking atomic_sleep], they are not needed testing commit 3957a5720157264dcc41415fbec7c51c4000fc2d gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: b66d750e2157482f4287fd6d1dfebf597f20d4496cef5eb8df244aaa3dcbd134 all runs: crashed: KASAN: global-out-of-bounds Read in z_erofs_decompress_queue representative crash: KASAN: global-out-of-bounds Read in z_erofs_decompress_queue, types: [KASAN-READ] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [locking atomic_sleep hang memleak ubsan bug_or_warning], they are not needed testing commit 3957a5720157264dcc41415fbec7c51c4000fc2d gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 6fdd0d9f7b7a39494ccd2451ef21d3f11349b618765f08ef677c7d6d80e2d2a2 all runs: crashed: KASAN: global-out-of-bounds Read in z_erofs_decompress_queue representative crash: KASAN: global-out-of-bounds Read in z_erofs_decompress_queue, types: [KASAN-READ] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [hang memleak ubsan bug_or_warning locking atomic_sleep], they are not needed testing commit 3957a5720157264dcc41415fbec7c51c4000fc2d gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: fc8352b5341e67f6d58041c5dab444ef864e24dbabb0379cca7f3057c597ac73 all runs: crashed: KASAN: global-out-of-bounds Read in z_erofs_decompress_queue representative crash: KASAN: global-out-of-bounds Read in z_erofs_decompress_queue, types: [KASAN-READ] the chunk can be dropped minimized to 435 configs; suspects: [6LOWPAN ARCH_ENABLE_MEMORY_HOTREMOVE ASUS_WMI BLK_DEV_ZONED CHARGER_BQ24190 CMA COMMON_CLK DAX DEV_COREDUMP DLM DLN2_ADC DMABUF_HEAPS DMABUF_HEAPS_CMA DMABUF_HEAPS_CMA_LEGACY DMABUF_HEAPS_SYSTEM DMABUF_MOVE_NOTIFY DMA_CMA DMA_ENGINE_RAID DM_AUDIT DM_BIO_PRISON DM_BUFIO DM_CACHE DM_CACHE_SMQ DM_CLONE DM_CRYPT DM_FLAKEY DM_INTEGRITY DM_MULTIPATH DM_MULTIPATH_QL DM_MULTIPATH_ST DM_PERSISTENT_DATA DM_RAID DM_SNAPSHOT DM_THIN_PROVISIONING DM_UEVENT DM_VERITY DM_VERITY_FEC DM_WRITECACHE DM_ZONED DRAGONRISE_FF DRM DRM_AUX_BRIDGE DRM_BOCHS DRM_BRIDGE DRM_CIRRUS_QEMU DRM_CLIENT DRM_CLIENT_DEFAULT_FBDEV DRM_CLIENT_LIB DRM_CLIENT_SELECTION DRM_CLIENT_SETUP DRM_DEBUG_MM DRM_DISPLAY_DP_AUX_BUS DRM_DISPLAY_DP_HELPER DRM_DISPLAY_HELPER DRM_FBDEV_EMULATION DRM_GEM_SHMEM_HELPER DRM_GM12U320 DRM_GUD DRM_KMS_HELPER DRM_PANEL DRM_PANEL_BRIDGE DRM_PANEL_EDP DRM_PANEL_ORIENTATION_QUIRKS DRM_SIMPLEDRM DRM_SYSFB_HELPER DRM_TTM DRM_TTM_HELPER DRM_UDL DRM_VGEM DRM_VIRTIO_GPU DRM_VIRTIO_GPU_KMS DRM_VKMS DRM_VMWGFX 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 EFS_FS ENCRYPTED_KEYS EPROBE_EVENTS EQUALIZER EROFS_FS EROFS_FS_POSIX_ACL EROFS_FS_SECURITY EROFS_FS_XATTR EROFS_FS_ZIP EVM EVM_ADD_XATTRS EVM_ATTR_FSUUID EVM_EXTRA_SMACK_XATTRS EXFAT_FS EXPORTFS_BLOCK_OPS EXT3_FS EXT3_FS_POSIX_ACL EXT3_FS_SECURITY EXTCON EXTCON_INTEL_CHT_WC EXTCON_PTN5150 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_CFB_COPYAREA FB_CFB_FILLRECT FB_CFB_IMAGEBLIT FB_CORE FB_DEFERRED_IO FB_DEVICE FB_IOMEM_FOPS FB_IOMEM_HELPERS FB_NOTIFY FB_SYSMEM_FOPS FB_SYSMEM_HELPERS FB_SYSMEM_HELPERS_DEFERRED FB_SYS_COPYAREA FB_SYS_FILLRECT 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_ENCRYPTION FS_ENCRYPTION_ALGS FS_STACK FS_VERITY FS_VERITY_BUILTIN_SIGNATURES FTL FUSE_DAX FUSE_FS FW_LOADER_COMPRESS FW_LOADER_PAGED_BUF FW_LOADER_SYSFS FW_LOADER_USER_HELPER FW_LOADER_USER_HELPER_FALLBACK GACT_PROB GARP GENDWARFKSYMS GENERIC_IRQ_ENTRY GENERIC_PHY GENERIC_SYSCALL GET_FREE_REGION GFS2_FS GFS2_FS_LOCKING_DLM GNSS GNSS_USB GOOGLE_COREBOOT_TABLE GOOGLE_FIRMWARE GOOGLE_MEMCONSOLE GOOGLE_MEMCONSOLE_COREBOOT GOOGLE_VPD GPIOLIB GPIOLIB_IRQCHIP GPIOLIB_LEGACY GPIO_ACPI GPIO_DLN2 GPIO_LJCA GPIO_VIPERBOARD GREENASIA_FF GREYBUS GREYBUS_BRIDGED_PHY GREYBUS_ES2 GREYBUS_HID GREYBUS_USB GROUP_SCHED_BANDWIDTH GTP GUEST_PERF_EVENTS HAS_LTO_CLANG HAVE_ARCH_KSTACK_ERASE HAVE_ARCH_NODE_DEV_GROUP HAVE_ARCH_USERFAULTFD_MINOR HAVE_ARCH_USERFAULTFD_WP HAVE_BOOTMEM_INFO_NODE HAVE_CLK_PREPARE HAVE_KVM_CPU_RELAX_INTERCEPT HAVE_KVM_DIRTY_RING HAVE_KVM_DIRTY_RING_ACQ_REL HAVE_KVM_DIRTY_RING_TSO HAVE_KVM_IRQCHIP HAVE_KVM_IRQ_BYPASS HAVE_KVM_IRQ_ROUTING HAVE_KVM_MSI HAVE_KVM_NO_POLL HAVE_KVM_PFNCACHE HAVE_KVM_PM_NOTIFIER HAVE_KVM_READONLY_MEM 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_DRAGONRISE HID_ELAN HID_ELECOM HID_ELO HID_EMS_FF HID_EVISION HID_FT260 HID_GEMBIRD HID_GFRM HID_GLORIOUS HID_GOOGLE_STADIA_FF HID_GREENASIA HID_GT683R HID_HOLTEK HID_ICADE HID_JABRA HID_KEYTOUCH HID_KYE HID_LCPOWER HID_LED HID_LENOVO HID_LETSKETCH HID_LOGITECH HID_LOGITECH_DJ HID_LOGITECH_HIDPP HID_MACALLY HID_MAGICMOUSE HID_MALTRON HID_MAYFLASH HID_MCP2200 HID_MCP2221 HID_MEGAWORLD_FF 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_PRIMAX HID_PRODIKEYS HID_PXRC HID_RAZER 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_SIGMAMICRO HID_SPEEDLINK HID_STEELSERIES HID_THINGM HID_TIVO HID_TOPRE HID_TWINHAN HID_U2FZERO HID_UCLOGIC HID_UDRAW_PS3 HID_VIEWSONIC HID_VIVALDI HID_VIVALDI_COMMON HID_VRC2 HID_WACOM HID_WALTOP HID_WIIMOTE HID_XIAOMI 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_DESIGNWARE_CORE I2C_DESIGNWARE_PLATFORM I2C_DIOLAN_U2C I2C_DLN2 I2C_HID_ACPI I2C_HID_CORE I2C_HID_OF I2C_LJCA 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_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 INPUT_ATI_REMOTE2 INPUT_CM109 INPUT_IMS_PCU INPUT_JOYDEV INPUT_KEYSPAN_REMOTE INPUT_LEDS INPUT_MOUSEDEV INPUT_MOUSEDEV_PSAUX INPUT_POWERMATE INPUT_UINPUT INPUT_YEALINK INTEGRITY INTEGRITY_ASYMMETRIC_KEYS INTEGRITY_AUDIT INTEGRITY_SIGNATURE INTEGRITY_TRUSTED_KEYRING INTEL_CHTWC_INT33FE INTEL_IDMA64 INTEL_IOATDMA INTEL_IOMMU_DEFAULT_ON INTEL_IOMMU_SVM INTEL_ISHTP_ECLITE INTEL_ISH_FIRMWARE_DOWNLOADER INTEL_ISH_HID INTEL_SOC_PMIC_CHTWC INTERVAL_TREE_SPAN_ITER IOMMUFD IOMMUFD_DRIVER IOMMUFD_DRIVER_CORE IOMMUFD_TEST 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_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_FIB_TRIE_STATS IP_MROUTE_MULTIPLE_TABLES IP_NF_ARP_MANGLE IP_NF_MATCH_AH IP_NF_MATCH_ECN IP_NF_MATCH_RPFILTER IP_NF_MATCH_TTL IP_NF_TARGET_ECN IP_NF_TARGET_SYNPROXY IP_ROUTE_CLASSID IP_SCTP IRQ_TIME_ACCOUNTING LAPB LCD_CLASS_DEVICE LEDS_CLASS_MULTICOLOR MAC802154 MEDIA_DIGITAL_TV_SUPPORT MEDIA_RADIO_SUPPORT MEDIA_SDR_SUPPORT MEDIA_SUPPORT MEDIA_TEST_SUPPORT MEDIA_USB_SUPPORT MEMORY_HOTPLUG MEMORY_HOTREMOVE MFD_DLN2 MFD_VIPERBOARD MODVERSIONS MPTCP MTD NETFILTER_ADVANCED NET_ACT_GACT NET_ACT_MIRRED NET_IPGRE_DEMUX NFT_COMPAT NFT_COMPAT_ARP NFT_FWD_NETDEV NF_TABLES NF_TABLES_ARP NF_TABLES_NETDEV RADIO_ADAPTERS RADIO_SI4713 RAS RC_CORE REGULATOR RFKILL SND SOUND STAGING TRUSTED_KEYS TYPEC TYPEC_MUX_PI3USB30532 USB_LJCA USB_ROLES_INTEL_XHCI USB_ROLE_SWITCH VIDEO_DEV VIRTIO_FS WAN ZONE_DEVICE] disabling configs for [atomic_sleep hang memleak ubsan bug_or_warning locking], they are not needed picked [v6.16 v6.15 v6.14 v6.12 v6.10 v6.8 v6.6 v6.4 v6.1 v5.18 v5.15 v5.12 v5.9 v5.6 v5.3 v5.0 v4.19] out of 39 release tags testing release v6.16 testing commit 038d61fd642278bab63ee8ef722c50d10ab01e8f gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 59a0e66cc5f17c653d62662e8a3aa26a7f68270ebd2fef63939d9e415fe96e5b all runs: OK false negative chance: 0.000 # git bisect start 3957a5720157264dcc41415fbec7c51c4000fc2d 038d61fd642278bab63ee8ef722c50d10ab01e8f Bisecting: 6363 revisions left to test after this (roughly 13 steps) [8be4d31cb8aaeea27bde4b7ddb26e28a89062ebf] Merge tag 'net-next-6.17' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next testing commit 8be4d31cb8aaeea27bde4b7ddb26e28a89062ebf gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: de4d70c4608a24ddb0136840806b859fdfa8a9443c9bcfd4745c5f60c6c79e0d all runs: crashed: KASAN: global-out-of-bounds Read in z_erofs_decompress_queue representative crash: KASAN: global-out-of-bounds Read in z_erofs_decompress_queue, types: [KASAN-READ] # git bisect bad 8be4d31cb8aaeea27bde4b7ddb26e28a89062ebf Bisecting: 3007 revisions left to test after this (roughly 12 steps) [115e74a29b530d121891238e9551c4bcdf7b04b5] Merge tag 'soc-dt-6.17' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc testing commit 115e74a29b530d121891238e9551c4bcdf7b04b5 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 56acd356e2f147862ad145c26b4cb2dc5d6daefaf0d1641c662f7438cff34cef all runs: crashed: KASAN: global-out-of-bounds Read in z_erofs_decompress_queue representative crash: KASAN: global-out-of-bounds Read in z_erofs_decompress_queue, types: [KASAN-READ] # git bisect bad 115e74a29b530d121891238e9551c4bcdf7b04b5 Bisecting: 1702 revisions left to test after this (roughly 11 steps) [177bf8620cf4ed290ee170a6c5966adc0924b336] Merge tag 'sound-6.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound testing commit 177bf8620cf4ed290ee170a6c5966adc0924b336 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 3d6c2305544d0a27448c4b28d38b664886e302ccd30dd986789c3ec9c6ed0bc7 all runs: crashed: KASAN: global-out-of-bounds Read in z_erofs_decompress_queue representative crash: KASAN: global-out-of-bounds Read in z_erofs_decompress_queue, types: [KASAN-READ] # git bisect bad 177bf8620cf4ed290ee170a6c5966adc0924b336 Bisecting: 813 revisions left to test after this (roughly 10 steps) [6e11664f148454a127dd89e8698c3e3e80e5f62f] Merge tag 'for-6.17/block-20250728' of git://git.kernel.dk/linux testing commit 6e11664f148454a127dd89e8698c3e3e80e5f62f gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 8bce4c5ce9bf9b6c2a9203ce1e6e725bb429e255c77f0786da2d2223d81cdc62 all runs: crashed: KASAN: global-out-of-bounds Read in z_erofs_decompress_queue representative crash: KASAN: global-out-of-bounds Read in z_erofs_decompress_queue, types: [KASAN-READ] # git bisect bad 6e11664f148454a127dd89e8698c3e3e80e5f62f Bisecting: 433 revisions left to test after this (roughly 9 steps) [953e117bf4aad7e1d01419d4bcc03ab93420387c] Merge tag 'pull-fd' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs testing commit 953e117bf4aad7e1d01419d4bcc03ab93420387c gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: e24c0a40b6371ae67d93860aed3b35f63a9f1667f59cf3b442fb2d1da4a0e5f6 all runs: crashed: KASAN: global-out-of-bounds Read in z_erofs_decompress_queue representative crash: KASAN: global-out-of-bounds Read in z_erofs_decompress_queue, types: [KASAN-READ] # git bisect bad 953e117bf4aad7e1d01419d4bcc03ab93420387c Bisecting: 195 revisions left to test after this (roughly 8 steps) [279b4db10e46a31c7cd8161c1a5d7dc4c423b028] btrfs: use cached state when falling back from NOCoW write to CoW write testing commit 279b4db10e46a31c7cd8161c1a5d7dc4c423b028 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 5da85ad94ec7b9326587d46c54e9a135addfb1672bdedd427e83f3c62ea85d8e all runs: OK false negative chance: 0.000 # git bisect good 279b4db10e46a31c7cd8161c1a5d7dc4c423b028 Bisecting: 108 revisions left to test after this (roughly 7 steps) [a90f1b6ad6649d553c9d76f50a42e4ba5783164b] Merge tag 'gfs2-for-6.17' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2 testing commit a90f1b6ad6649d553c9d76f50a42e4ba5783164b gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: c8a500183b94f7cfd12d652d075581ea5c2da8a8deeddc3a39b9dabdbe0f01be all runs: crashed: KASAN: global-out-of-bounds Read in z_erofs_decompress_queue representative crash: KASAN: global-out-of-bounds Read in z_erofs_decompress_queue, types: [KASAN-READ] # git bisect bad a90f1b6ad6649d553c9d76f50a42e4ba5783164b Bisecting: 43 revisions left to test after this (roughly 6 steps) [8bf931f99e84a31974f862e0f981738d048ab67f] xfs: don't use a xfs_log_iovec for attr_item names and values testing commit 8bf931f99e84a31974f862e0f981738d048ab67f gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 1f954eac0de48f75b2c2bda83f1a8899afec4db331e19ea05a898574fd670016 all runs: OK false negative chance: 0.000 # git bisect good 8bf931f99e84a31974f862e0f981738d048ab67f Bisecting: 22 revisions left to test after this (roughly 5 steps) [a11b4fa602ed3b744aa075f34bee82c12aa3553a] Merge tag 'ntfs3_for_6.17' of https://github.com/Paragon-Software-Group/linux-ntfs3 testing commit a11b4fa602ed3b744aa075f34bee82c12aa3553a gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 00c689d9b915573446239c9202dcd10e0f5d89da601a21bd8300b39b55bdf16b all runs: OK false negative chance: 0.000 # git bisect good a11b4fa602ed3b744aa075f34bee82c12aa3553a Bisecting: 11 revisions left to test after this (roughly 4 steps) [76a9701325d39d8602695b19c49a9d0828c897ca] Merge tag 'erofs-for-6.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs testing commit 76a9701325d39d8602695b19c49a9d0828c897ca gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 02535d2e7441cc96d82684b398bedb38149a843ca2d1f3a310270f3ad2f1aeb8 all runs: crashed: KASAN: global-out-of-bounds Read in z_erofs_decompress_queue representative crash: KASAN: global-out-of-bounds Read in z_erofs_decompress_queue, types: [KASAN-READ] # git bisect bad 76a9701325d39d8602695b19c49a9d0828c897ca Bisecting: 5 revisions left to test after this (roughly 3 steps) [f768685427c073d46887d78423882e2771276705] erofs: refine erofs_iomap_begin() testing commit f768685427c073d46887d78423882e2771276705 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 562411f179b2d5622b5d8641c36d8e5758503ca707e9cf605c8168da16321cff all runs: OK false negative chance: 0.000 # git bisect good f768685427c073d46887d78423882e2771276705 Bisecting: 2 revisions left to test after this (roughly 2 steps) [681acbda3a6d2c687ab01baed22598da389d1f79] erofs: add on-disk definition for metadata compression testing commit 681acbda3a6d2c687ab01baed22598da389d1f79 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 75bf54c76444d297d1bc8a1203df3c3822c2411458b2e43edaaab998945d8918 all runs: OK false negative chance: 0.000 # git bisect good 681acbda3a6d2c687ab01baed22598da389d1f79 Bisecting: 0 revisions left to test after this (roughly 1 step) [df0ce6cefa453d2236381645e529a27ef2f0a573] erofs: support to readahead dirent blocks in erofs_readdir() testing commit df0ce6cefa453d2236381645e529a27ef2f0a573 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: f0dc474595e95cedf14f00bac77534327e7d573a8ee932aaaef9162b93402b64 all runs: crashed: KASAN: global-out-of-bounds Read in z_erofs_decompress_queue representative crash: KASAN: global-out-of-bounds Read in z_erofs_decompress_queue, types: [KASAN-READ] # git bisect bad df0ce6cefa453d2236381645e529a27ef2f0a573 Bisecting: 0 revisions left to test after this (roughly 0 steps) [414091322c6363c9283aeb177101e4d7a3819ccd] erofs: implement metadata compression testing commit 414091322c6363c9283aeb177101e4d7a3819ccd gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 9d7a8202929280e2493b7de78dca13ee1a20304e76fa721c7e99364581ca6469 run #0: ignore: lost connection to test machine 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 false negative chance: 0.000 # git bisect good 414091322c6363c9283aeb177101e4d7a3819ccd df0ce6cefa453d2236381645e529a27ef2f0a573 is the first bad commit commit df0ce6cefa453d2236381645e529a27ef2f0a573 Author: Chao Yu Date: Mon Jul 21 10:13:52 2025 +0800 erofs: support to readahead dirent blocks in erofs_readdir() This patch supports to readahead more blocks in erofs_readdir(), it can enhance readdir performance in large direcotry. readdir test in a large directory which contains 12000 sub-files. files_per_second Before: 926385.54 After: 2380435.562 Meanwhile, let's introduces a new sysfs entry to control readahead bytes to provide more flexible policy for readahead of readdir(). - location: /sys/fs/erofs//dir_ra_bytes - default value: 16384 - disable readahead: set the value to 0 Signed-off-by: Chao Yu Reviewed-by: Gao Xiang Link: https://lore.kernel.org/r/20250721021352.2495371-1-chao@kernel.org [ Gao Xiang: minor styling adjustment. ] Signed-off-by: Gao Xiang Documentation/ABI/testing/sysfs-fs-erofs | 8 ++++++++ fs/erofs/dir.c | 14 ++++++++++++++ fs/erofs/internal.h | 4 ++++ fs/erofs/super.c | 1 + fs/erofs/sysfs.c | 2 ++ 5 files changed, 29 insertions(+) accumulated error probability: 0.00 culprit signature: f0dc474595e95cedf14f00bac77534327e7d573a8ee932aaaef9162b93402b64 parent signature: 9d7a8202929280e2493b7de78dca13ee1a20304e76fa721c7e99364581ca6469 revisions tested: 22, total time: 7h0m19.542821875s (build: 3h51m39.222100891s, test: 2h47m33.59336585s) first bad commit: df0ce6cefa453d2236381645e529a27ef2f0a573 erofs: support to readahead dirent blocks in erofs_readdir() recipients (to): ["chao@kernel.org" "hsiangkao@linux.alibaba.com"] recipients (cc): [] crash: KASAN: global-out-of-bounds Read in z_erofs_decompress_queue ================================================================== BUG: KASAN: global-out-of-bounds in z_erofs_decompress_pcluster fs/erofs/zdata.c:1274 [inline] BUG: KASAN: global-out-of-bounds in z_erofs_decompress_queue+0x3b1/0x2ef0 fs/erofs/zdata.c:1411 Read of size 8 at addr ffffffff8650beb0 by task kworker/u9:0/45 CPU: 1 UID: 0 PID: 45 Comm: kworker/u9:0 Not tainted syzkaller #0 PREEMPT(none) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 Workqueue: erofs_worker z_erofs_decompressqueue_work Call Trace: dump_stack_lvl+0xf4/0x170 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:378 [inline] print_report+0xca/0x230 mm/kasan/report.c:480 kasan_report+0x118/0x150 mm/kasan/report.c:593 z_erofs_decompress_pcluster fs/erofs/zdata.c:1274 [inline] z_erofs_decompress_queue+0x3b1/0x2ef0 fs/erofs/zdata.c:1411 z_erofs_decompressqueue_work+0x7d/0xd0 fs/erofs/zdata.c:1423 process_one_work kernel/workqueue.c:3238 [inline] process_scheduled_works+0x995/0x12d0 kernel/workqueue.c:3321 worker_thread+0x850/0xc60 kernel/workqueue.c:3402 kthread+0x59b/0x690 kernel/kthread.c:464 ret_from_fork+0x136/0x2d0 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 The buggy address belongs to the variable: z_erofs_decomp+0x30/0x60 The buggy address belongs to the physical page: page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x650b flags: 0x80000000002000(reserved|node=0|zone=1) raw: 0080000000002000 ffffea00001942c8 ffffea00001942c8 0000000000000000 raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner info is not present (never set?) Memory state around the buggy address: ffffffff8650bd80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffffffff8650be00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffffffff8650be80: 00 00 00 00 00 00 f9 f9 f9 f9 f9 f9 00 00 00 00 ^ ffffffff8650bf00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffffffff8650bf80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================