ci starts bisection 2025-05-26 07:57:01.79755735 +0000 UTC m=+30010.152698513 bisecting cause commit starting from 176e917e010cb7dcc605f11d2bc33f304292482b building syzkaller on f8cc0c832b122cdf7a643d6965200c9cbb0a92a4 ensuring issue is reproducible on original commit 176e917e010cb7dcc605f11d2bc33f304292482b testing commit 176e917e010cb7dcc605f11d2bc33f304292482b gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: fb1b2327b79e45c6b9b88b0d5bbce85c0d404e5b0359e5dc083db7f14f12ff54 all runs: crashed: KASAN: slab-out-of-bounds Read in build_sit_entries representative crash: KASAN: slab-out-of-bounds Read in build_sit_entries, types: [KASAN] check whether we can drop unnecessary instrumentation disabling configs for [HANG LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP], they are not needed testing commit 176e917e010cb7dcc605f11d2bc33f304292482b gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: d49d0c5237cc782e1755b2f38dded70f6744bed01aff4af5251596e5393239f7 all runs: crashed: KASAN: slab-out-of-bounds Read in build_sit_entries representative crash: KASAN: slab-out-of-bounds Read in build_sit_entries, types: [KASAN] the bug reproduces without the instrumentation disabling configs for [BUG LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed kconfig minimization: base=4091 full=8361 leaves diff=2131 split chunks (needed=false): <2131> split chunk #0 of len 2131 into 5 parts testing without sub-chunk 1/5 disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed testing commit 176e917e010cb7dcc605f11d2bc33f304292482b gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: 806f1503562aad885a78e5b3c358eb9c42f1825dda0b1e4d7ec8356434de48fa all runs: crashed: KASAN: slab-out-of-bounds Read in build_sit_entries representative crash: KASAN: slab-out-of-bounds Read in build_sit_entries, types: [KASAN] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [BUG LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed testing commit 176e917e010cb7dcc605f11d2bc33f304292482b gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: ad208d8756086de50639bf14c0187ec7467473d47d5397cae6041297ba07932c all runs: OK false negative chance: 0.000 testing without sub-chunk 3/5 disabling configs for [BUG LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed testing commit 176e917e010cb7dcc605f11d2bc33f304292482b gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: eb39660369abddb4112b3de6c6d43b5b9e87b5a24064ed631159fe1529402277 all runs: crashed: KASAN: slab-out-of-bounds Read in build_sit_entries representative crash: KASAN: slab-out-of-bounds Read in build_sit_entries, types: [KASAN] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP HANG], they are not needed testing commit 176e917e010cb7dcc605f11d2bc33f304292482b gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: 72525c7d90bd4f3b329e7d5c0cb721ff9da652c9cc21236d6b0fa9e6e336bd24 all runs: crashed: KASAN: slab-out-of-bounds Read in build_sit_entries representative crash: KASAN: slab-out-of-bounds Read in build_sit_entries, types: [KASAN] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [HANG LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP], they are not needed testing commit 176e917e010cb7dcc605f11d2bc33f304292482b gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: e2e2db2177147815ea5c37a8338eef63ab03e35e6c3ff5b3f12e7c20661d6224 all runs: crashed: KASAN: slab-out-of-bounds Read in build_sit_entries representative crash: KASAN: slab-out-of-bounds Read in build_sit_entries, types: [KASAN] the chunk can be dropped minimized to 427 configs; suspects: [6LOWPAN ARCH_ENABLE_MEMORY_HOTREMOVE ASUS_WMI CHARGER_BQ24190 CMA COMMON_CLK DAX DLM DRM DRM_BRIDGE DRM_DISPLAY_DSC_HELPER DRM_DISPLAY_HDCP_HELPER DRM_DISPLAY_HDMI_HELPER DRM_DISPLAY_HELPER DRM_GEM_SHMEM_HELPER DRM_GM12U320 DRM_GUD DRM_I915 DRM_I915_CAPTURE_ERROR DRM_I915_COMPRESS_ERROR DRM_I915_USERPTR DRM_KMS_HELPER DRM_MIPI_DSI 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 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_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_DAX_PMD FS_ENCRYPTION FS_ENCRYPTION_ALGS FS_STACK FS_VERITY FS_VERITY_BUILTIN_SIGNATURES FTL FUSE_DAX FUSE_FS FUTEX_MPOL FUTEX_PRIVATE_HASH FW_LOADER_COMPRESS FW_LOADER_PAGED_BUF FW_LOADER_SYSFS FW_LOADER_USER_HELPER FW_LOADER_USER_HELPER_FALLBACK GACT_PROB GARP GENDWARFKSYMS GENERIC_PHY 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 GPIO_ACPI GPIO_DLN2 GPIO_LJCA GPIO_VIPERBOARD GREENASIA_FF GREYBUS GREYBUS_BRIDGED_PHY GREYBUS_ES2 GREYBUS_HID GREYBUS_USB GTP GUEST_PERF_EVENTS GVE HAS_LTO_CLANG 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_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 IO_URING_ZCRX 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_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_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 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 PAGE_POOL RADIO_ADAPTERS RADIO_SI4713 RAS RC_CORE REGULATOR RFKILL SND SOUND STAGING TRANSPARENT_HUGEPAGE TYPEC TYPEC_MUX_PI3USB30532 USB_LJCA USB_ROLES_INTEL_XHCI USB_ROLE_SWITCH VIDEO_DEV VIRTIO_FS WAN ZONE_DEVICE] disabling configs for [UBSAN BUG LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed picked [v6.14 v6.13 v6.12 v6.10 v6.8 v6.6 v6.4 v6.2 v5.19 v5.16 v5.13 v5.10 v5.7 v5.4 v5.1 v4.19] out of 37 release tags testing release v6.14 testing commit 38fec10eb60d687e30c8c6b5420d86e8149f7557 gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: c43d012e445d3856452865c471e259380a8dc0389a2d0b0c1991f25fea72dba8 all runs: OK false negative chance: 0.000 # git bisect start 176e917e010cb7dcc605f11d2bc33f304292482b 38fec10eb60d687e30c8c6b5420d86e8149f7557 Bisecting: 14558 revisions left to test after this (roughly 14 steps) [a86aa9c247b99c8e1d89c50aabdaf39b1fbe4770] Merge branch 'ionic-support-qsfp-cmis' testing commit a86aa9c247b99c8e1d89c50aabdaf39b1fbe4770 gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: dee5816977d23e663a7fe43dcad7ca8250e8c2a94157fa5aa67ae7cc7c20196c all runs: OK false negative chance: 0.000 # git bisect good a86aa9c247b99c8e1d89c50aabdaf39b1fbe4770 Bisecting: 6903 revisions left to test after this (roughly 13 steps) [24114f6dc0b6faf8f32086fab9d5478ed5b43a31] Merge branch 'main' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next.git testing commit 24114f6dc0b6faf8f32086fab9d5478ed5b43a31 gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: 75707b43f60ea6821c186eab75cb2a75e0e64d6cecfc7af71223da41c369b95e all runs: crashed: KASAN: slab-out-of-bounds Read in build_sit_entries representative crash: KASAN: slab-out-of-bounds Read in build_sit_entries, types: [KASAN] # git bisect bad 24114f6dc0b6faf8f32086fab9d5478ed5b43a31 Bisecting: 3831 revisions left to test after this (roughly 12 steps) [36fd36c1d41c2cb836bcb8061925fa4b54e2b868] Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-omap.git testing commit 36fd36c1d41c2cb836bcb8061925fa4b54e2b868 gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: f9d3084e8adef62139efdb7c19792722fa911bfdda252f4dc2be1dbc290ddea8 all runs: OK false negative chance: 0.000 # git bisect good 36fd36c1d41c2cb836bcb8061925fa4b54e2b868 Bisecting: 1908 revisions left to test after this (roughly 11 steps) [d19b46f11f362396d2f86b20946d0225631b8127] Merge branch 'hwmon-next' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging.git testing commit d19b46f11f362396d2f86b20946d0225631b8127 gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: 733a64351ec86a746b33b96e75108b4e3542d90d3d60926b5e867636260bcdd2 all runs: crashed: KASAN: slab-out-of-bounds Read in build_sit_entries representative crash: KASAN: slab-out-of-bounds Read in build_sit_entries, types: [KASAN] # git bisect bad d19b46f11f362396d2f86b20946d0225631b8127 Bisecting: 875 revisions left to test after this (roughly 10 steps) [096d375329d8bd81f46e6fb93e64d610e84f4821] Merge branch 'vfs.all' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs.git testing commit 096d375329d8bd81f46e6fb93e64d610e84f4821 gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: 03e0a930cb7b5f5706641d1f50bc64bd57e5b7cac7d3e01002825eec4eaedf1d all runs: crashed: KASAN: slab-out-of-bounds Read in build_sit_entries representative crash: KASAN: slab-out-of-bounds Read in build_sit_entries, types: [KASAN] # git bisect bad 096d375329d8bd81f46e6fb93e64d610e84f4821 Bisecting: 543 revisions left to test after this (roughly 9 steps) [8623245d8fcf7ad2fbd6c8efbcec9379925a92d1] Merge branch 'dev' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git testing commit 8623245d8fcf7ad2fbd6c8efbcec9379925a92d1 gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: 43edfa642a20673bfb7c5a2c5055e34e0d89b0a0bae16b0f03f757b907b44726 all runs: OK false negative chance: 0.000 # git bisect good 8623245d8fcf7ad2fbd6c8efbcec9379925a92d1 Bisecting: 292 revisions left to test after this (roughly 8 steps) [ccf845459e371e92c9e682f1e39df575fb7ffdf2] Merge branch 'ksmbd-for-next' of https://github.com/smfrench/smb3-kernel.git testing commit ccf845459e371e92c9e682f1e39df575fb7ffdf2 gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: 85e4c59c77586f55b36e781950d814cd651a096744e5765e66ce52a05153c490 all runs: crashed: KASAN: slab-out-of-bounds Read in build_sit_entries representative crash: KASAN: slab-out-of-bounds Read in build_sit_entries, types: [KASAN] # git bisect bad ccf845459e371e92c9e682f1e39df575fb7ffdf2 Bisecting: 125 revisions left to test after this (roughly 7 steps) [2557c3ea4c4ee0d2bf4dd42ef366a0c4d844046b] f2fs: Use a folio in f2fs_recover_inline_xattr() testing commit 2557c3ea4c4ee0d2bf4dd42ef366a0c4d844046b gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: 022dc34f60e25676f3617bf08e26dd5c0dff8fe6d1b0175c5a3e36c48a88a7fd all runs: OK false negative chance: 0.000 # git bisect good 2557c3ea4c4ee0d2bf4dd42ef366a0c4d844046b Bisecting: 62 revisions left to test after this (roughly 6 steps) [ba4b46f1235897ca3d60dc08d90162645a506e64] f2fs: add f2fs_bug_on() in f2fs_quota_read() testing commit ba4b46f1235897ca3d60dc08d90162645a506e64 gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: c948d8c93752013b472b23a38d9a1a83ffb84f7ba6d2cc628ecd62caccaaaac6 all runs: crashed: KASAN: slab-out-of-bounds Read in build_sit_entries representative crash: KASAN: slab-out-of-bounds Read in build_sit_entries, types: [KASAN] # git bisect bad ba4b46f1235897ca3d60dc08d90162645a506e64 Bisecting: 31 revisions left to test after this (roughly 5 steps) [398c7df7bc6bf8fd7682e804866aaa6dfbf792f5] f2fs: Pass a folio to f2fs_init_read_extent_tree() testing commit 398c7df7bc6bf8fd7682e804866aaa6dfbf792f5 gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: c66322fba53c57e111f8249ef2d10be64b8f9bf5772fff21324b4a20381343c3 all runs: OK false negative chance: 0.000 # git bisect good 398c7df7bc6bf8fd7682e804866aaa6dfbf792f5 Bisecting: 15 revisions left to test after this (roughly 4 steps) [bb5eb8a5b222fa5092f60d5555867a05ebc3bdf2] f2fs: fix to bail out in get_new_segment() testing commit bb5eb8a5b222fa5092f60d5555867a05ebc3bdf2 gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: 2238cdbd910db744d4c20f60239a352f3fd4b2b6edfc00b619d58220e6b85be1 all runs: OK false negative chance: 0.000 # git bisect good bb5eb8a5b222fa5092f60d5555867a05ebc3bdf2 Bisecting: 7 revisions left to test after this (roughly 3 steps) [0638f28b30621012ee4dac014b58c5a9588e65b1] f2fs: simplify return value handling in f2fs_fsync_node_pages testing commit 0638f28b30621012ee4dac014b58c5a9588e65b1 gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: cecb4f0944567d027e5062bb113be89aea9b7e146f1a6fbbaea2dc0975ce7545 all runs: OK false negative chance: 0.000 # git bisect good 0638f28b30621012ee4dac014b58c5a9588e65b1 Bisecting: 3 revisions left to test after this (roughly 2 steps) [91b11bd8152cc2925adbc5830db85315d3e0b76d] f2fs: add a method for calculating the remaining blocks in the current segment in LFS mode. testing commit 91b11bd8152cc2925adbc5830db85315d3e0b76d gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: fa71f3fad7cd444881693bd664dc97840cf922e44faac38ee1bbb9fdd7db93b9 all runs: OK false negative chance: 0.000 # git bisect good 91b11bd8152cc2925adbc5830db85315d3e0b76d Bisecting: 1 revision left to test after this (roughly 1 step) [6b077a8714f0735f82ea1c4fa4b358278da78ec8] f2fs: remove unused sbi argument from checksum functions testing commit 6b077a8714f0735f82ea1c4fa4b358278da78ec8 gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: 18e840c07808aec9b0d346742db468f1e4d639ee7674c54e4a5079024658a072 all runs: crashed: KASAN: slab-out-of-bounds Read in build_sit_entries representative crash: KASAN: slab-out-of-bounds Read in build_sit_entries, types: [KASAN] # git bisect bad 6b077a8714f0735f82ea1c4fa4b358278da78ec8 Bisecting: 0 revisions left to test after this (roughly 0 steps) [313d10d79a82358bd8c3ee7ecda6356b1f7cde55] f2fs: add ckpt_valid_blocks to the section entry testing commit 313d10d79a82358bd8c3ee7ecda6356b1f7cde55 gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: 1382d01fcdfab7ceececcb00eb9da49d7eeacb098dc344ed16989dccddc0076f all runs: crashed: KASAN: slab-out-of-bounds Read in build_sit_entries representative crash: KASAN: slab-out-of-bounds Read in build_sit_entries, types: [KASAN] # git bisect bad 313d10d79a82358bd8c3ee7ecda6356b1f7cde55 313d10d79a82358bd8c3ee7ecda6356b1f7cde55 is the first bad commit commit 313d10d79a82358bd8c3ee7ecda6356b1f7cde55 Author: yohan.joung Date: Mon May 12 16:36:10 2025 +0900 f2fs: add ckpt_valid_blocks to the section entry when performing buffered writes in a large section, overhead is incurred due to the iteration through ckpt_valid_blocks within the section. when SEGS_PER_SEC is 128, this overhead accounts for 20% within the f2fs_write_single_data_page routine. as the size of the section increases, the overhead also grows. to handle this problem ckpt_valid_blocks is added within the section entries. Test insmod null_blk.ko nr_devices=1 completion_nsec=1 submit_queues=8 hw_queue_depth=64 max_sectors=512 bs=4096 memory_backed=1 make_f2fs /dev/block/nullb0 make_f2fs -s 128 /dev/block/nullb0 fio --bs=512k --size=1536M --rw=write --name=1 --filename=/mnt/test_dir/seq_write --ioengine=io_uring --iodepth=64 --end_fsync=1 before SEGS_PER_SEC 1 2556MiB/s SEGS_PER_SEC 128 2145MiB/s after SEGS_PER_SEC 1 2556MiB/s SEGS_PER_SEC 128 2556MiB/s Signed-off-by: yohan.joung Reviewed-by: Chao Yu Signed-off-by: Jaegeuk Kim fs/f2fs/segment.c | 45 +++++++++++++++++++++++++++++++++++------- fs/f2fs/segment.h | 58 ++++++++++++++++++++++++++++++++++++++++++++----------- 2 files changed, 85 insertions(+), 18 deletions(-) accumulated error probability: 0.00 culprit signature: 1382d01fcdfab7ceececcb00eb9da49d7eeacb098dc344ed16989dccddc0076f parent signature: fa71f3fad7cd444881693bd664dc97840cf922e44faac38ee1bbb9fdd7db93b9 revisions tested: 23, total time: 9h44m33.75836995s (build: 6h24m53.739521188s, test: 2h49m38.403754955s) first bad commit: 313d10d79a82358bd8c3ee7ecda6356b1f7cde55 f2fs: add ckpt_valid_blocks to the section entry recipients (to): ["chao@kernel.org" "jaegeuk@kernel.org" "yohan.joung@sk.com"] recipients (cc): [] crash: KASAN: slab-out-of-bounds Read in build_sit_entries loop3: detected capacity change from 0 to 262144 ================================================================== BUG: KASAN: slab-out-of-bounds in sanity_check_valid_blocks fs/f2fs/segment.h:385 [inline] BUG: KASAN: slab-out-of-bounds in build_sit_entries+0x1a19/0x1c10 fs/f2fs/segment.c:5060 Read of size 4 at addr ffff88815f844a20 by task syz.3.16/3568 CPU: 1 UID: 0 PID: 3568 Comm: syz.3.16 Not tainted 6.15.0-rc1-syzkaller #0 PREEMPT(undef) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call Trace: dump_stack_lvl+0xf4/0x170 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:408 [inline] print_report+0xb4/0x290 mm/kasan/report.c:521 kasan_report+0x118/0x150 mm/kasan/report.c:634 sanity_check_valid_blocks fs/f2fs/segment.h:385 [inline] build_sit_entries+0x1a19/0x1c10 fs/f2fs/segment.c:5060 f2fs_build_segment_manager+0x2ac6/0x4560 fs/f2fs/segment.c:5707 f2fs_fill_super+0x39a9/0x5ea0 fs/f2fs/super.c:4747 mount_bdev+0x1df/0x270 fs/super.c:1693 legacy_get_tree+0xf5/0x190 fs/fs_context.c:662 vfs_get_tree+0x84/0x1a0 fs/super.c:1759 do_new_mount+0x1c7/0x850 fs/namespace.c:3879 do_mount fs/namespace.c:4219 [inline] __do_sys_mount fs/namespace.c:4430 [inline] __se_sys_mount+0x218/0x2b0 fs/namespace.c:4407 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x8f/0x170 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fa46159010a Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fa4624d8e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007fa4624d8ef0 RCX: 00007fa46159010a RDX: 0000200000020440 RSI: 0000200000020480 RDI: 00007fa4624d8eb0 RBP: 0000200000020440 R08: 00007fa4624d8ef0 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000020480 R13: 00007fa4624d8eb0 R14: 000000000002041f R15: 00002000000204c0 Allocated by task 3568: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3e/0x80 mm/kasan/common.c:68 poison_kmalloc_redzone mm/kasan/common.c:377 [inline] __kasan_kmalloc+0x93/0xb0 mm/kasan/common.c:394 kasan_kmalloc include/linux/kasan.h:260 [inline] __do_kmalloc_node mm/slub.c:4331 [inline] __kvmalloc_node_noprof+0x2e8/0x5a0 mm/slub.c:5016 f2fs_kvmalloc fs/f2fs/f2fs.h:3534 [inline] f2fs_kvzalloc fs/f2fs/f2fs.h:3540 [inline] build_sit_info fs/f2fs/segment.c:4779 [inline] f2fs_build_segment_manager+0x11c4/0x4560 fs/f2fs/segment.c:5696 f2fs_fill_super+0x39a9/0x5ea0 fs/f2fs/super.c:4747 mount_bdev+0x1df/0x270 fs/super.c:1693 legacy_get_tree+0xf5/0x190 fs/fs_context.c:662 vfs_get_tree+0x84/0x1a0 fs/super.c:1759 do_new_mount+0x1c7/0x850 fs/namespace.c:3879 do_mount fs/namespace.c:4219 [inline] __do_sys_mount fs/namespace.c:4430 [inline] __se_sys_mount+0x218/0x2b0 fs/namespace.c:4407 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x8f/0x170 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f The buggy address belongs to the object at ffff88815f844000 which belongs to the cache kmalloc-4k of size 4096 The buggy address is located 0 bytes to the right of allocated 2592-byte region [ffff88815f844000, ffff88815f844a20) The buggy address belongs to the physical page: page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x15f840 head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 flags: 0x100000000000040(head|node=0|zone=2) page_type: f5(slab) raw: 0100000000000040 ffff888100042140 ffffea0004443400 dead000000000002 raw: 0000000000000000 0000000000040004 00000000f5000000 0000000000000000 head: 0100000000000040 ffff888100042140 ffffea0004443400 dead000000000002 head: 0000000000000000 0000000000040004 00000000f5000000 0000000000000000 head: 0100000000000003 ffffea00057e1001 00000000ffffffff 00000000ffffffff head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd2040(__GFP_IO|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 3146, tgid 3146 (syz-executor), ts 79157622825, free_ts 50082754089 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0xec/0x120 mm/page_alloc.c:1717 prep_new_page mm/page_alloc.c:1725 [inline] get_page_from_freelist+0x3bee/0x3d50 mm/page_alloc.c:3652 __alloc_frozen_pages_noprof+0x26b/0x460 mm/page_alloc.c:4934 alloc_pages_mpol+0x150/0x320 mm/mempolicy.c:2301 alloc_slab_page mm/slub.c:2459 [inline] allocate_slab+0x8a/0x350 mm/slub.c:2623 new_slab mm/slub.c:2676 [inline] ___slab_alloc+0x9dc/0x10e0 mm/slub.c:3862 __slab_alloc mm/slub.c:3952 [inline] __slab_alloc_node mm/slub.c:4027 [inline] slab_alloc_node mm/slub.c:4188 [inline] __do_kmalloc_node mm/slub.c:4330 [inline] __kmalloc_noprof+0x2e8/0x500 mm/slub.c:4343 kmalloc_noprof include/linux/slab.h:909 [inline] tomoyo_realpath_from_path+0xf5/0x550 security/tomoyo/realpath.c:251 tomoyo_get_realpath security/tomoyo/file.c:151 [inline] tomoyo_check_open_permission+0x1a6/0x520 security/tomoyo/file.c:771 security_file_open+0x4d/0x100 security/security.c:3114 do_dentry_open+0x304/0x1520 fs/open.c:933 vfs_open+0x36/0x2b0 fs/open.c:1086 do_open fs/namei.c:3845 [inline] path_openat+0x23e3/0x2bb0 fs/namei.c:4004 do_filp_open+0x1e4/0x3c0 fs/namei.c:4031 do_sys_openat2+0xfa/0x180 fs/open.c:1429 do_sys_open fs/open.c:1444 [inline] __do_sys_openat fs/open.c:1460 [inline] __se_sys_openat fs/open.c:1455 [inline] __x64_sys_openat+0xf3/0x120 fs/open.c:1455 page last free pid 1754 tgid 1748 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1262 [inline] free_unref_folios+0xb52/0x12c0 mm/page_alloc.c:2737 folios_put_refs+0x3af/0x4b0 mm/swap.c:992 free_pages_and_swap_cache+0x20d/0x3c0 mm/swap_state.c:267 __tlb_batch_free_encoded_pages mm/mmu_gather.c:136 [inline] tlb_batch_pages_flush mm/mmu_gather.c:149 [inline] tlb_flush_mmu_free mm/mmu_gather.c:397 [inline] tlb_flush_mmu+0x2ba/0x500 mm/mmu_gather.c:404 tlb_finish_mmu+0xaa/0x190 mm/mmu_gather.c:496 exit_mmap+0x3b5/0x8b0 mm/mmap.c:1297 __mmput+0x9c/0x320 kernel/fork.c:1379 exit_mm+0x11b/0x1b0 kernel/exit.c:589 do_exit+0x66b/0x2020 kernel/exit.c:940 do_group_exit+0x1b1/0x280 kernel/exit.c:1102 get_signal+0xd79/0xeb0 kernel/signal.c:3034 arch_do_signal_or_restart+0x90/0x5c0 arch/x86/kernel/signal.c:337 exit_to_user_mode_loop kernel/entry/common.c:111 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x68/0xc0 kernel/entry/common.c:218 do_syscall_64+0x9c/0x170 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f Memory state around the buggy address: ffff88815f844900: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88815f844980: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff88815f844a00: 00 00 00 00 fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff88815f844a80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88815f844b00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ==================================================================