ci starts bisection 2025-06-14 16:27:59.429263679 +0000 UTC m=+6120.816965279 bisecting cause commit starting from bc6e0ba6c9bafa6241b05524b9829808056ac4ad building syzkaller on 0e8da31f2d4312fc3ad5c1e2e221075831885e0e ensuring issue is reproducible on original commit bc6e0ba6c9bafa6241b05524b9829808056ac4ad testing commit bc6e0ba6c9bafa6241b05524b9829808056ac4ad gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: a866165e9dd83770ba001fef4d8a35189d26211ac5952880b558d884d0797f59 all runs: crashed: KASAN: slab-use-after-free Read in do_sync_mmap_readahead representative crash: KASAN: slab-use-after-free Read in do_sync_mmap_readahead, types: [KASAN] check whether we can drop unnecessary instrumentation disabling configs for [UBSAN BUG LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed testing commit bc6e0ba6c9bafa6241b05524b9829808056ac4ad gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: 89e5d64b3bdd11c4a0671fe88a79a7cd3995f1ff3f6ae3cdc3f8a508f805700e all runs: crashed: KASAN: slab-use-after-free Read in do_sync_mmap_readahead representative crash: KASAN: slab-use-after-free Read in do_sync_mmap_readahead, types: [KASAN] the bug reproduces without the instrumentation disabling configs for [HANG LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP], they are not needed kconfig minimization: base=4095 full=8368 leaves diff=2121 split chunks (needed=false): <2121> split chunk #0 of len 2121 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 bc6e0ba6c9bafa6241b05524b9829808056ac4ad gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: f85dd54706c9062180441acbcc84ff1cf36dc76fb7591ee989997c1e69015927 all runs: OK false negative chance: 0.000 testing without sub-chunk 2/5 disabling configs for [LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP HANG], they are not needed testing commit bc6e0ba6c9bafa6241b05524b9829808056ac4ad gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: 376783e4991c67f3481e29f3e830e66785452660abd5ffc3ff418e9e61f8feff run #0: crashed: KASAN: slab-use-after-free Read in do_sync_mmap_readahead run #1: crashed: KASAN: slab-use-after-free Read in do_sync_mmap_readahead run #2: crashed: KASAN: slab-use-after-free Read in do_sync_mmap_readahead run #3: crashed: KASAN: slab-use-after-free Read in do_sync_mmap_readahead run #4: crashed: KASAN: slab-use-after-free Read in do_sync_mmap_readahead run #5: crashed: KASAN: slab-use-after-free Read in do_sync_mmap_readahead run #6: crashed: KASAN: slab-use-after-free Read in do_sync_mmap_readahead run #7: crashed: KASAN: slab-use-after-free Read in do_sync_mmap_readahead run #8: OK run #9: OK representative crash: KASAN: slab-use-after-free Read in do_sync_mmap_readahead, types: [KASAN] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [UBSAN BUG LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed testing commit bc6e0ba6c9bafa6241b05524b9829808056ac4ad gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: 21a4e5d2ed01f32217b6dcb4f198f973474d1a57c71cb92d209d4231e708455c all runs: crashed: KASAN: slab-use-after-free Read in do_sync_mmap_readahead representative crash: KASAN: slab-use-after-free Read in do_sync_mmap_readahead, types: [KASAN] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [BUG LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed testing commit bc6e0ba6c9bafa6241b05524b9829808056ac4ad gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: cd6a9e098061a5a8205de3e351b9cc240eabf064fd26e36e45ebfb7a0ffec3ac 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 bc6e0ba6c9bafa6241b05524b9829808056ac4ad gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: f488e1ddd772342ba594727f66b9e747f0c62729135ca04f76f0cd10ff48d88e all runs: crashed: KASAN: slab-use-after-free Read in do_sync_mmap_readahead representative crash: KASAN: slab-use-after-free Read in do_sync_mmap_readahead, types: [KASAN] the chunk can be dropped minimized to 850 configs; suspects: [6LOWPAN 6LOWPAN_GHC_EXT_HDR_DEST 6LOWPAN_GHC_EXT_HDR_FRAG 6LOWPAN_GHC_EXT_HDR_HOP 6LOWPAN_GHC_EXT_HDR_ROUTE 6LOWPAN_GHC_ICMPV6 6LOWPAN_GHC_UDP 6LOWPAN_NHC 6LOWPAN_NHC_DEST 6LOWPAN_NHC_FRAGMENT 6LOWPAN_NHC_HOP 6LOWPAN_NHC_IPV6 6LOWPAN_NHC_MOBILITY 6LOWPAN_NHC_ROUTING 6LOWPAN_NHC_UDP 6PACK 842_COMPRESS 842_DECOMPRESS 9P_FSCACHE 9P_FS_POSIX_ACL 9P_FS_SECURITY ACORN_PARTITION ACORN_PARTITION_ADFS ACORN_PARTITION_CUMANA ACORN_PARTITION_EESOX ACORN_PARTITION_ICS ACORN_PARTITION_POWERTEC ACORN_PARTITION_RISCIX ACPI_NFIT ACPI_NHLT ACPI_PLATFORM_PROFILE ADFS_FS AFFS_FS AFS_FS AFS_FSCACHE AF_KCM AF_RXRPC AF_RXRPC_IPV6 AIX_PARTITION AMD_SFH_HID AMIGA_PARTITION ANDROID_BINDERFS ANDROID_BINDER_IPC ANON_VMA_NAME APERTURE_HELPERS APPLE_MFI_FASTCHARGE AR5523 ARCH_ENABLE_MEMORY_HOTREMOVE ARCH_ENABLE_THP_MIGRATION ARCH_HAS_USER_SHADOW_STACK ARCH_SUPPORTS_HUGE_PFNMAP ARCH_SUPPORTS_PMD_PFNMAP ARCH_SUPPORTS_PUD_PFNMAP ARCH_WANT_PMD_MKWRITE ASM_MODVERSIONS ASUS_TF103C_DOCK ASYNC_CORE ASYNC_MEMCPY ASYNC_PQ ASYNC_RAID6_RECOV ASYNC_TX_DMA ASYNC_XOR ATARI_PARTITION ATA_GENERIC ATA_OVER_ETH ATH10K ATH10K_CE ATH10K_LEDS ATH10K_PCI ATH10K_USB ATH11K ATH6KL ATH6KL_USB ATH9K ATH9K_AHB ATH9K_BTCOEX_SUPPORT ATH9K_CHANNEL_CONTEXT ATH9K_COMMON ATH9K_COMMON_DEBUG ATH9K_COMMON_SPECTRAL ATH9K_DEBUGFS ATH9K_DYNACK ATH9K_HTC ATH9K_HTC_DEBUGFS ATH9K_HW ATH9K_PCI ATH9K_PCOEM ATH9K_RFKILL ATH_COMMON ATM ATM_BR2684 ATM_CLIP ATM_DRIVERS ATM_LANE ATM_MPOA ATM_TCP AUXILIARY_BUS AX25 AX25_DAMA_SLAVE AX88796B_PHY BAREUDP BATMAN_ADV BATMAN_ADV_BATMAN_V BATMAN_ADV_BLA BATMAN_ADV_DAT BATMAN_ADV_MCAST BATMAN_ADV_NC BCACHE BCACHEFS_DEBUG BCACHEFS_ERASURE_CODING BCACHEFS_FS BCACHEFS_POSIX_ACL BCACHEFS_QUOTA BCACHEFS_SIX_OPTIMISTIC_SPIN BCMA BCMA_HOST_PCI_POSSIBLE BEFS_FS BFQ_CGROUP_DEBUG BFQ_GROUP_IOSCHED BFS_FS BIG_KEYS BLK_CGROUP_PUNT_BIO BLK_CGROUP_RWSTAT BLK_DEV_BSGLIB BLK_DEV_INTEGRITY BLK_DEV_NBD BLK_DEV_NULL_BLK BLK_DEV_NULL_BLK_FAULT_INJECTION BLK_DEV_NVME BLK_DEV_PMEM BLK_DEV_RAM BLK_DEV_RNBD BLK_DEV_RNBD_CLIENT BLK_DEV_THROTTLING BLK_DEV_ZONED BLK_ICQ BLK_INLINE_ENCRYPTION BLK_INLINE_ENCRYPTION_FALLBACK BLK_WBT BLK_WBT_MQ BONDING BOOT_VESA_SUPPORT BPF_EVENTS BPF_JIT BPF_JIT_ALWAYS_ON BPF_JIT_DEFAULT_ON BPF_LSM BPF_PRELOAD BPF_PRELOAD_UMD BPF_STREAM_PARSER BPF_SYSCALL BPQETHER BRIDGE BRIDGE_CFM BRIDGE_EBT_802_3 BRIDGE_EBT_AMONG BRIDGE_EBT_ARP BRIDGE_EBT_ARPREPLY BRIDGE_EBT_BROUTE BRIDGE_EBT_DNAT BRIDGE_EBT_IP BRIDGE_EBT_IP6 BRIDGE_EBT_LIMIT BRIDGE_EBT_LOG BRIDGE_EBT_MARK BRIDGE_EBT_MARK_T BRIDGE_EBT_NFLOG BRIDGE_EBT_PKTTYPE BRIDGE_EBT_REDIRECT BRIDGE_EBT_SNAT BRIDGE_EBT_STP BRIDGE_EBT_T_FILTER BRIDGE_EBT_T_NAT BRIDGE_EBT_VLAN BRIDGE_IGMP_SNOOPING BRIDGE_MRP BRIDGE_NF_EBTABLES BRIDGE_NF_EBTABLES_LEGACY BRIDGE_VLAN_FILTERING BSD_DISKLABEL BSD_PROCESS_ACCT_V3 BT BTRFS_ASSERT BTRFS_FS BTRFS_FS_POSIX_ACL BTRFS_FS_REF_VERIFY BTT BT_6LOWPAN BT_ATH3K BT_BCM BT_BNEP BT_BNEP_MC_FILTER BT_BNEP_PROTO_FILTER BT_BREDR BT_HCIBCM203X BT_HCIBFUSB BT_HCIBPA10X BT_HCIBTUSB BT_HCIBTUSB_AUTOSUSPEND BT_HCIBTUSB_BCM BT_HCIBTUSB_MTK BT_HCIBTUSB_POLL_SYNC BT_HCIBTUSB_RTL BT_HCIUART BT_HCIUART_3WIRE BT_HCIUART_AG6XX BT_HCIUART_BCSP BT_HCIUART_H4 BT_HCIUART_LL BT_HCIUART_MRVL BT_HCIUART_QCA BT_HCIUART_SERDEV BT_HCIVHCI BT_HIDP BT_INTEL BT_LE BT_LEDS BT_LE_L2CAP_ECRED BT_MRVL BT_MRVL_SDIO BT_MSFTEXT BT_MTK BT_MTKSDIO BT_MTKUART BT_QCA BT_RFCOMM BT_RFCOMM_TTY BT_RTL BXT_WC_PMIC_OPREGION CACHEFILES CAIF CAIF_DEBUG CAIF_DRIVERS CAIF_NETDEV CAIF_TTY CAIF_USB CAIF_VIRTIO CAN CAN_8DEV_USB CAN_BCM CAN_CALC_BITTIMING CAN_DEV CAN_EMS_USB CAN_ESD_USB CAN_ETAS_ES58X CAN_F81604 CAN_GS_USB CAN_GW CAN_IFI_CANFD CAN_ISOTP CAN_J1939 CAN_KVASER_USB CAN_MCBA_USB CAN_NETLINK CAN_PEAK_USB CAN_RAW CAN_RX_OFFLOAD CAN_SLCAN CAN_UCAN CAN_VCAN CAN_VXCAN CARL9170 CARL9170_HWRNG CARL9170_LEDS CARL9170_WPC CEC_CORE CEPH_FS CEPH_FSCACHE CEPH_FS_POSIX_ACL CEPH_LIB CEPH_LIB_USE_DNS_RESOLVER CFG80211 CFG80211_CRDA_SUPPORT CFG80211_DEBUGFS CFG80211_DEFAULT_PS CFG80211_REQUIRE_SIGNED_REGDB CFG80211_USE_KERNEL_REGDB_KEYS CFG80211_WEXT CFS_BANDWIDTH CGROUP_BPF CHARGER_ISP1704 CHR_DEV_ST CIFS CIFS_ALLOW_INSECURE_LEGACY CIFS_DEBUG CIFS_DFS_UPCALL CIFS_FSCACHE CIFS_POSIX CIFS_SMB_DIRECT CIFS_SWN_UPCALL CIFS_UPCALL CIFS_XATTR CLOSURES CLS_U32_MARK CLS_U32_PERF CMA CMA_SIZE_SEL_MAX CMDLINE_PARTITION COMEDI COMEDI_DT9812 COMEDI_NI_USB6501 COMEDI_USBDUX COMEDI_USBDUXFAST COMEDI_USBDUXSIGMA COMEDI_USB_DRIVERS COMEDI_VMK80XX COMPAT_NETLINK_MESSAGES COUNTER CRAMFS CRAMFS_BLOCKDEV CRAMFS_MTD CRC64 CRC64_ARCH CRC8 CRC_CCITT CRC_ITU_T CRC_T10DIF CRC_T10DIF_ARCH CRYPTO_842 CRYPTO_ADIANTUM CRYPTO_AEGIS128 CRYPTO_AEGIS128_AESNI_SSE2 CRYPTO_AES_NI_INTEL CRYPTO_AES_TI CRYPTO_ANSI_CPRNG CRYPTO_ANUBIS CRYPTO_ARC4 CRYPTO_ARCH_HAVE_LIB_BLAKE2S CRYPTO_ARCH_HAVE_LIB_CHACHA CRYPTO_ARCH_HAVE_LIB_CURVE25519 CRYPTO_ARCH_HAVE_LIB_POLY1305 CRYPTO_ARIA CRYPTO_ARIA_AESNI_AVX_X86_64 CRYPTO_BLAKE2B CRYPTO_BLAKE2S_X86 CRYPTO_BLOWFISH CRYPTO_BLOWFISH_COMMON CRYPTO_BLOWFISH_X86_64 CRYPTO_CAMELLIA CRYPTO_CAMELLIA_AESNI_AVX2_X86_64 CRYPTO_CAMELLIA_AESNI_AVX_X86_64 CRYPTO_CAMELLIA_X86_64 CRYPTO_CAST5 CRYPTO_CAST5_AVX_X86_64 CRYPTO_CAST6 CRYPTO_CAST6_AVX_X86_64 CRYPTO_CAST_COMMON CRYPTO_CHACHA20 CRYPTO_CHACHA20POLY1305 CRYPTO_CHACHA20_X86_64 CRYPTO_CRC32C CRYPTO_CRYPTD CRYPTO_CTS CRYPTO_CURVE25519 CRYPTO_CURVE25519_X86 CRYPTO_DEFLATE CRYPTO_DES CRYPTO_DES3_EDE_X86_64 CRYPTO_DEV_CCP CRYPTO_DEV_CCP_DD CRYPTO_DEV_PADLOCK CRYPTO_DEV_PADLOCK_AES CRYPTO_DEV_PADLOCK_SHA CRYPTO_DEV_QAT CRYPTO_DEV_QAT_C3XXX CRYPTO_DEV_QAT_C3XXXVF CRYPTO_DEV_QAT_C62X CRYPTO_DEV_QAT_C62XVF CRYPTO_DEV_QAT_DH895xCC CRYPTO_DEV_QAT_DH895xCCVF CRYPTO_DEV_VIRTIO CRYPTO_DH CRYPTO_DRBG_CTR CRYPTO_DRBG_HASH CRYPTO_ECDH CRYPTO_ECRDSA CRYPTO_ENGINE CRYPTO_ESSIV CRYPTO_FCRYPT CRYPTO_GHASH_CLMUL_NI_INTEL CRYPTO_HCTR2 CRYPTO_HKDF CRYPTO_KDF800108_CTR CRYPTO_KHAZAD CRYPTO_KPP CRYPTO_KRB5 CRYPTO_KRB5ENC CRYPTO_LIB_ARC4 CRYPTO_LIB_CHACHA CRYPTO_LIB_CHACHA20POLY1305 CRYPTO_LIB_CHACHA_GENERIC CRYPTO_LIB_CURVE25519 CRYPTO_LIB_CURVE25519_GENERIC CRYPTO_LIB_CURVE25519_INTERNAL CRYPTO_LIB_DES CRYPTO_LIB_POLY1305 CRYPTO_LIB_POLY1305_GENERIC CRYPTO_LIB_SM3 CRYPTO_LRW CRYPTO_LZ4 CRYPTO_LZ4HC CRYPTO_MICHAEL_MIC CRYPTO_NHPOLY1305 CRYPTO_NHPOLY1305_AVX2 CRYPTO_NHPOLY1305_SSE2 CRYPTO_PCBC CRYPTO_PCRYPT CRYPTO_POLY1305_X86_64 CRYPTO_POLYVAL CRYPTO_POLYVAL_CLMUL_NI CRYPTO_RMD160 CRYPTO_SEED CRYPTO_SERPENT CRYPTO_SERPENT_AVX2_X86_64 CRYPTO_SERPENT_AVX_X86_64 CRYPTO_SERPENT_SSE2_X86_64 CRYPTO_SHA1_SSSE3 CRYPTO_SHA512_SSSE3 CRYPTO_SM3_AVX_X86_64 CRYPTO_SM4 CRYPTO_SM4_AESNI_AVX2_X86_64 CRYPTO_SM4_AESNI_AVX_X86_64 CRYPTO_SM4_GENERIC CRYPTO_STREEBOG CRYPTO_TEA CRYPTO_TWOFISH CRYPTO_TWOFISH_AVX_X86_64 CRYPTO_TWOFISH_COMMON CRYPTO_TWOFISH_X86_64 CRYPTO_TWOFISH_X86_64_3WAY CRYPTO_USER CRYPTO_USER_API CRYPTO_USER_API_AEAD CRYPTO_USER_API_ENABLE_OBSOLETE CRYPTO_USER_API_HASH CRYPTO_USER_API_RNG CRYPTO_USER_API_SKCIPHER CRYPTO_WP512 CRYPTO_XCBC CRYPTO_XCTR CRYPTO_XTS CRYPTO_XXHASH CRYPTO_ZSTD CUSE CYPRESS_FIRMWARE DAMON DAMON_PADDR DAMON_RECLAIM DAMON_VADDR DAX DCA DCB DEBUG_VFS DEFAULT_CODEL DEVICE_MIGRATION DEVICE_PRIVATE DEV_COREDUMP DEV_DAX DLM DLN2_ADC DMABUF_HEAPS DMABUF_HEAPS_CMA 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_BUDDY 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_DSC_HELPER DRM_DISPLAY_HDCP_HELPER DRM_DISPLAY_HDMI_HELPER DRM_DISPLAY_HELPER DRM_FBDEV_EMULATION DRM_GEM_SHMEM_HELPER DRM_GM12U320 DVB_CORE ENCRYPTED_KEYS EXTCON FSCACHE FUSE_FS GENEVE GPIOLIB HAMRADIO HAVE_CLK HID_DRAGONRISE HID_NVIDIA_SHIELD HID_PLAYSTATION HID_SENSOR_HUB HID_SMARTJOYPLUS HID_STEAM HID_THRUSTMASTER IIO INFINIBAND INFINIBAND_ADDR_TRANS INFINIBAND_IPOIB INFINIBAND_RTRS_CLIENT INFINIBAND_USER_ACCESS INFINIBAND_VIRT_DMA INPUT_TABLET INPUT_TOUCHSCREEN INTEL_SCU_IPC INTEL_SOC_PMIC_BXTWC IOSCHED_BFQ IP_SCTP L2TP LEDS_CLASS_MULTICOLOR LIBNVDIMM MAC80211 MAC80211_DEBUGFS MAC80211_LEDS MEDIA_COMMON_OPTIONS MEDIA_DIGITAL_TV_SUPPORT MEDIA_PLATFORM_SUPPORT MEDIA_RADIO_SUPPORT MEDIA_SDR_SUPPORT MEDIA_SUPPORT MEDIA_USB_SUPPORT MEMORY_HOTPLUG MEMORY_HOTREMOVE MFD_DLN2 MFD_INTEL_PMC_BXT MFD_MT6360 MFD_MT6370 MFD_RETU MMC MTD MTD_UBI NETFILTER_CONNCOUNT NET_CLS_U32 NET_IPGRE NET_IPGRE_DEMUX NET_SCH_DEFAULT NFS_V4_1 NLS_CODEPAGE_1250 NLS_CODEPAGE_1251 NLS_CODEPAGE_737 NLS_CODEPAGE_775 NLS_CODEPAGE_850 NLS_CODEPAGE_852 NLS_CODEPAGE_855 NLS_CODEPAGE_857 NLS_CODEPAGE_860 NLS_CODEPAGE_861 NLS_CODEPAGE_862 NLS_CODEPAGE_863 NLS_CODEPAGE_864 NLS_CODEPAGE_865 NLS_CODEPAGE_866 NLS_CODEPAGE_869 NLS_CODEPAGE_874 NLS_CODEPAGE_932 NLS_CODEPAGE_936 NLS_CODEPAGE_949 NLS_CODEPAGE_950 NLS_ISO8859_13 NLS_ISO8859_14 NLS_ISO8859_15 NLS_ISO8859_2 NLS_ISO8859_3 NLS_ISO8859_4 NLS_ISO8859_5 NLS_ISO8859_6 NLS_ISO8859_7 NLS_ISO8859_8 NLS_ISO8859_9 NLS_KOI8_R NLS_KOI8_U NLS_MAC_CELTIC NLS_MAC_CENTEURO NLS_MAC_CROATIAN NLS_MAC_CYRILLIC NLS_MAC_GAELIC NLS_MAC_GREEK NLS_MAC_ICELAND NLS_MAC_INUIT NLS_MAC_ROMAN NLS_MAC_ROMANIAN NLS_MAC_TURKISH NLS_UCS2_UTILS NOZOMI NTFS3_FS NTFS3_FS_POSIX_ACL NTFS3_LZX_XPRESS NULL_TTY NUMA_BALANCING NUMA_BALANCING_DEFAULT_ENABLED NUMA_EMU NUMA_KEEP_MEMINFO NVDIMM_DAX NVDIMM_KEYS NVDIMM_PFN NVIDIA_SHIELD_FF NVME_CORE NVME_FABRICS NVME_FC NVME_MULTIPATH NVME_RDMA NVME_TARGET NVME_TARGET_FC NVME_TARGET_FCLOOP NVME_TARGET_LOOP NVME_TARGET_RDMA NVME_TARGET_TCP NVME_TCP N_GSM N_HDLC OCFS2_DEBUG_FS OCFS2_FS OCFS2_FS_O2CB OCFS2_FS_STATS OCFS2_FS_USERSPACE_CLUSTER OF_GPIO OF_PMEM OMFS_FS OPENVSWITCH OPENVSWITCH_GENEVE OPENVSWITCH_GRE OPENVSWITCH_VXLAN ORANGEFS_FS OSF_PARTITION OVERLAY_FS OVERLAY_FS_DEBUG OVERLAY_FS_INDEX OVERLAY_FS_REDIRECT_ALWAYS_FOLLOW OVERLAY_FS_REDIRECT_DIR PACKET_DIAG PAGE_IDLE_FLAG PAGE_REPORTING PAHOLE_HAS_BTF_TAG PAHOLE_HAS_LANG_EXCLUDE PAHOLE_HAS_SPLIT_BTF PARPORT PARPORT_NOT_PC PARTITION_ADVANCED PCCARD PCCARD_NONSTATIC PCIEAER PCI_ENDPOINT PCI_IOV PCMCIA PCMCIA_LOAD_CIS PERCPU_STATS PERSISTENT_KEYRINGS PHONET PHYLINK PHY_CPCAP_USB PHY_QCOM_USB_HS PHY_QCOM_USB_HSIC PHY_SAMSUNG_USB2 PHY_TUSB1210 PKCS7_TEST_KEY PKCS8_PRIVATE_KEY_PARSER PLAYSTATION_FF PLFXLC PMIC_OPREGION PM_CLK PNFS_BLOCK PNFS_FILE_LAYOUT PNFS_FLEXFILE_LAYOUT PPP PPPOATM PPPOE PPPOE_HASH_BITS_1 PPPOL2TP PPP_ASYNC PPP_BSDCOMP PPP_DEFLATE PPP_FILTER PPP_MPPE PPP_MULTILINK PPP_SYNC_TTY PPTP PREEMPT PREEMPT_NOTIFIERS PROC_CHILDREN PSAMPLE PSI PSTORE PSTORE_COMPRESS QCOM_QMI_HELPERS QNX4FS_FS QNX6FS_FS QRTR QRTR_TUN RADIO_ADAPTERS RADIO_SHARK RADIO_SHARK2 RADIO_TEA575X RAID6_PQ RAID_ATTRS RC_ATI_REMOTE RC_CORE RC_DEVICES RC_XBOX_DVD RDMA_RXE RDMA_SIW RDS RDS_RDMA RDS_TCP READ_ONLY_THP_FOR_FS REALTEK_AUTOPM REED_SOLOMON REED_SOLOMON_DEC8 REGMAP REGMAP_I2C REGMAP_IRQ REGMAP_MMIO REGMAP_SPI REGULATOR REGULATOR_FIXED_VOLTAGE REGULATOR_TWL4030 RESET_CONTROLLER RFKILL RFKILL_INPUT RFKILL_LEDS RMI4_2D_SENSOR RMI4_CORE RMI4_F03 RMI4_F03_SERIO RMI4_F11 RMI4_F12 RMI4_F30 RMI4_F3A ROMFS_BACKED_BY_BOTH ROMFS_FS ROMFS_ON_BLOCK ROMFS_ON_MTD ROSE RTC_DRV_HID_SENSOR_TIME RXKAD SCHED_CORE SCREEN_INFO SCSI_FC_ATTRS SCSI_HPSA SCSI_ISCSI_ATTRS SCSI_LOGGING SCSI_NETLINK SCSI_SAS_ATA SCSI_SAS_ATTRS SCSI_SAS_LIBSAS SCSI_SCAN_ASYNC SCSI_SRP_ATTRS SCTP_COOKIE_HMAC_MD5 SCTP_COOKIE_HMAC_SHA1 SCTP_DEFAULT_COOKIE_HMAC_MD5 SECONDARY_TRUSTED_KEYRING SECURITY_INFINIBAND SECURITY_NETWORK_XFRM SENSORS_AQUACOMPUTER_D5NEXT SENSORS_CORSAIR_CPRO SENSORS_CORSAIR_PSU SENSORS_GIGABYTE_WATERFORCE SENSORS_NZXT_KRAKEN2 SENSORS_NZXT_SMART2 SENSORS_POWERZ SERIAL_DEV_BUS SERIAL_DEV_CTRL_TTYPORT SERIAL_MCTRL_GPIO SGI_PARTITION SIGNATURE SIGNED_PE_FILE_VERIFICATION SKB_DECRYPTED SLHC SLIP SLIP_COMPRESSED SLIP_MODE_SLIP6 SLIP_SMART SMARTJOYPLUS_FF SMBFS SMB_SERVER SMC SMC_DIAG SMSC_PHY SMS_SDIO_DRV SMS_SIANO_DEBUGFS SMS_SIANO_MDTV SMS_SIANO_RC SMS_USB_DRV SND SND_ALOOP SND_BCD2000 SND_CTL_FAST_LOOKUP SND_CTL_LED SND_DEBUG SND_DMA_SGBUF SND_DRIVERS SND_DUMMY SND_DYNAMIC_MINORS SND_HDA SND_HDA_CODEC_ANALOG SND_HDA_CODEC_CA0110 SND_HDA_CODEC_CA0132 SND_HDA_CODEC_CIRRUS SND_HDA_CODEC_CMEDIA SND_HDA_CODEC_CONEXANT SND_HDA_CODEC_HDMI SND_HDA_CODEC_REALTEK SND_HDA_CODEC_SI3054 SND_HDA_CODEC_SIGMATEL SND_HDA_CODEC_VIA SND_HDA_COMPONENT SND_HDA_CORE SND_HDA_GENERIC SND_HDA_GENERIC_LEDS SND_HDA_HWDEP SND_HDA_I915 SND_HDA_INPUT_BEEP SND_HDA_INTEL SND_HDA_PATCH_LOADER SND_HDA_RECONFIG SND_HDA_SCODEC_COMPONENT SND_HRTIMER SND_HWDEP SND_INTEL_DSP_CONFIG SND_INTEL_NHLT SND_INTEL_SOUNDWIRE_ACPI SND_JACK SND_JACK_INPUT_DEV SND_MIXER_OSS SND_OSSEMUL SND_PCI SND_PCM SND_PCMCIA SND_PCM_ELD SND_PCM_OSS SND_PCM_OSS_PLUGINS SND_PCM_TIMER SND_PCM_XRUN_DEBUG SND_PROC_FS SND_RAWMIDI SND_SEQUENCER SND_SEQUENCER_OSS SND_SEQ_DEVICE SND_SEQ_DUMMY SND_SEQ_HRTIMER_DEFAULT SND_SEQ_MIDI SND_SEQ_MIDI_EVENT SND_SEQ_VIRMIDI SND_SOC SND_SOC_I2C_AND_SPI SND_SOC_SDCA_OPTIONAL SND_SUPPORT_OLD_API SND_TIMER SND_UMP SND_UMP_LEGACY_RAWMIDI SND_USB SND_USB_6FIRE SND_USB_AUDIO SND_USB_AUDIO_MIDI_V2 SND_USB_AUDIO_USE_MEDIA_CONTROLLER SND_USB_CAIAQ SND_USB_CAIAQ_INPUT SND_USB_HIFACE SND_USB_LINE6 SND_USB_POD SND_USB_PODHD SND_USB_TONEPORT SND_USB_UA101 SND_USB_US122L SND_USB_USX2Y SND_USB_VARIAX SND_VERBOSE_PROCFS SND_VIRMIDI SND_VIRTIO SND_VMASTER SND_X86 SOCK_VALIDATE_XMIT SOLARIS_X86_PARTITION SONY_FF SOUND SOUNDWIRE SOUND_OSS_CORE SOUND_OSS_CORE_PRECLAIM SPI SPI_DLN2 SPI_DYNAMIC SPI_LJCA SPI_MASTER SQUASHFS SQUASHFS_4K_DEVBLK_SIZE SQUASHFS_COMPILE_DECOMP_MULTI SQUASHFS_DECOMP_MULTI SQUASHFS_FILE_DIRECT SQUASHFS_LZ4 SQUASHFS_LZO SQUASHFS_XATTR SQUASHFS_XZ SQUASHFS_ZLIB SQUASHFS_ZSTD SSB SSB_PCIHOST_POSSIBLE SSB_PCMCIAHOST_POSSIBLE SSB_SDIOHOST_POSSIBLE STEAM_FF STP STREAM_PARSER SUNRPC_BACKCHANNEL SUN_PARTITION SURFACE_AGGREGATOR SURFACE_AGGREGATOR_BUS SURFACE_AGGREGATOR_REGISTRY SURFACE_HID SURFACE_HID_CORE SURFACE_KBD SW_SYNC SYSFB SYSFS_SYSCALL SYSV68_PARTITION TABLET_USB_ACECAD TABLET_USB_AIPTEK TABLET_USB_HANWANG TABLET_USB_KBTAB TABLET_USB_PEGASUS TAHVO_USB TAHVO_USB_HOST_BY_DEFAULT TCG_CRB TCG_TIS TCG_TIS_CORE TCG_TPM TCP_CONG_BBR TCP_CONG_BIC TCP_CONG_CDG TCP_CONG_DCTCP TCP_CONG_HSTCP TCP_CONG_HTCP TCP_CONG_HYBLA TCP_CONG_ILLINOIS TCP_CONG_LP TCP_CONG_NV TCP_CONG_SCALABLE TCP_CONG_VEGAS TCP_CONG_VENO TCP_CONG_WESTWOOD TCP_CONG_YEAH TEE TEXTSEARCH TEXTSEARCH_BM TEXTSEARCH_FSM TEXTSEARCH_KMP THP_SWAP THRUSTMASTER_FF TIPC TIPC_CRYPTO TIPC_DIAG TIPC_MEDIA_IB TIPC_MEDIA_UDP TLS TLS_DEVICE TLS_TOE TMPFS_QUOTA TOOLS_SUPPORT_RELR TOUCHSCREEN_SUR40 TOUCHSCREEN_USB_3M TOUCHSCREEN_USB_COMPOSITE TOUCHSCREEN_USB_DMC_TSC10 TOUCHSCREEN_USB_E2I TOUCHSCREEN_USB_EASYTOUCH TOUCHSCREEN_USB_EGALAX TOUCHSCREEN_USB_ELO TOUCHSCREEN_USB_ETT_TC45USB TOUCHSCREEN_USB_ETURBO TOUCHSCREEN_USB_GENERAL_TOUCH TOUCHSCREEN_USB_GOTOP TOUCHSCREEN_USB_GUNZE TOUCHSCREEN_USB_IDEALTEK TOUCHSCREEN_USB_IRTOUCH TOUCHSCREEN_USB_ITM TOUCHSCREEN_USB_JASTEC TOUCHSCREEN_USB_NEXIO TOUCHSCREEN_USB_PANJIT TOUCHSCREEN_USB_ZYTRONIC TRANSPARENT_HUGEPAGE TRANSPARENT_HUGEPAGE_MADVISE TRUSTED_KEYS TTPCI_EEPROM TTY_PRINTK TUN_VNET_CROSS_LE TWL4030_CORE TYPEC TYPEC_ANX7411 TYPEC_DP_ALTMODE TYPEC_FUSB302 TYPEC_HD3SS3220 TYPEC_MT6360 TYPEC_MUX_FSA4480 TYPEC_MUX_GPIO_SBU TYPEC_MUX_INTEL_PMC TYPEC_MUX_NB7VPQ904M TYPEC_MUX_PTN36502 TYPEC_MUX_WCD939X_USBSS TYPEC_NVIDIA_ALTMODE TYPEC_RT1711H TYPEC_RT1719 TYPEC_STUSB160X TYPEC_TCPCI TYPEC_TCPCI_MAXIM TYPEC_TCPCI_MT6370 TYPEC_TCPM TYPEC_TPS6598X TYPEC_UCSI TYPEC_WCOVE TYPEC_WUSB3801 UBIFS_ATIME_SUPPORT UBIFS_FS UBIFS_FS_ADVANCED_COMPR UBIFS_FS_LZO UBIFS_FS_SECURITY UBIFS_FS_XATTR UBIFS_FS_ZLIB UBIFS_FS_ZSTD UCSI_ACPI UCSI_CCG UCSI_STM32G0 UDF_FS UDMABUF UFS_FS UFS_FS_WRITE UHID ULTRIX_PARTITION UNICODE UNIXWARE_DISKLABEL UNIX_DIAG USB4 USB4_NET USBIP_CORE USBIP_HOST USBIP_VHCI_HCD USBIP_VUDC USBPCWATCHDOG USB_ACM USB_ADUTUX USB_AIRSPY USB_ALI_M5632 USB_AN2720 USB_APPLEDISPLAY USB_ARMLINUX USB_BDC_UDC USB_BELKIN USB_C67X00_HCD USB_CATC USB_CDC_PHONET USB_DWC2 USB_GADGET USB_LJCA USB_MUSB_HDRC USB_NET_CDC_SUBSET USB_PHY USB_ROLE_SWITCH USB_STORAGE_REALTEK USB_ULPI_BUS USB_USBNET VIDEO_DEV VLAN_8021Q VXLAN WANT_COMPAT_NETLINK_MESSAGES WEXT_CORE WIRELESS WLAN WLAN_VENDOR_ATH WLAN_VENDOR_PURELIFI ZONE_DEVICE] disabling configs for [LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP HANG], they are not needed picked [v6.15 v6.14 v6.13 v6.11 v6.9 v6.7 v6.5 v6.3 v6.0 v5.17 v5.14 v5.11 v5.8 v5.5 v5.2 v4.20 v4.19] out of 38 release tags testing release v6.15 testing commit 0ff41df1cb268fc69e703a08a57ee14ae967d0ca gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: cac406ad7eb6b1617aa82b93935d9b4227af2d929a5143e8a9895e7c28a54054 all runs: OK false negative chance: 0.000 # git bisect start bc6e0ba6c9bafa6241b05524b9829808056ac4ad 0ff41df1cb268fc69e703a08a57ee14ae967d0ca Bisecting: 8119 revisions left to test after this (roughly 13 steps) [bf373e4c786bfe989e637195252698f45b157a68] Merge tag 'devicetree-for-6.16' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux testing commit bf373e4c786bfe989e637195252698f45b157a68 gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: 900a1a8b07e9c70aa5dc9648f87ffd8e7ae7f6f9604d22aae7ffea745812cff1 all runs: OK false negative chance: 0.000 # git bisect good bf373e4c786bfe989e637195252698f45b157a68 Bisecting: 4047 revisions left to test after this (roughly 12 steps) [d12ed2b7e1fe5c9e4a372a95fb7635a7f81eff6a] Merge tag 'phy-for-6.16' of git://git.kernel.org/pub/scm/linux/kernel/git/phy/linux-phy testing commit d12ed2b7e1fe5c9e4a372a95fb7635a7f81eff6a gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: 6a1dc2c42ee82fddc499c26c376ef7b1775551f287cdb1dddd64d792f8ef5c28 all runs: OK false negative chance: 0.000 # git bisect good d12ed2b7e1fe5c9e4a372a95fb7635a7f81eff6a Bisecting: 2013 revisions left to test after this (roughly 11 steps) [396e61e93351f7ee9ff9bcdca382f894aed37edc] Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc.git testing commit 396e61e93351f7ee9ff9bcdca382f894aed37edc gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: bd5bbfdb89a5aaeda319f1340ba72f6acec982f8172be807b0070163865a84ec all runs: crashed: KASAN: slab-use-after-free Read in do_sync_mmap_readahead representative crash: KASAN: slab-use-after-free Read in do_sync_mmap_readahead, types: [KASAN] # git bisect bad 396e61e93351f7ee9ff9bcdca382f894aed37edc Bisecting: 963 revisions left to test after this (roughly 10 steps) [378ec25aec5a8444879f8696d580c94950a1f1df] Merge tag 'tty-6.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty testing commit 378ec25aec5a8444879f8696d580c94950a1f1df gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: 02d201af131248fcea610f76d30cc73bfece84f3b673b6757577092724fc78c7 all runs: OK false negative chance: 0.000 # git bisect good 378ec25aec5a8444879f8696d580c94950a1f1df Bisecting: 481 revisions left to test after this (roughly 9 steps) [d9864e7d151194b06c6cdbee8e69f0686238313a] Merge tag 'perf-urgent-2025-06-08' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip testing commit d9864e7d151194b06c6cdbee8e69f0686238313a gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: 142a2bb9bec90794cae706fff251458b9444e4ff67ff1c7a44e097328cbb483a all runs: OK false negative chance: 0.000 # git bisect good d9864e7d151194b06c6cdbee8e69f0686238313a Bisecting: 245 revisions left to test after this (roughly 8 steps) [3d78abdeb86dc27a5fed3cc63492293d3523722b] Merge branch 'dma-mapping-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/mszyprowski/linux.git testing commit 3d78abdeb86dc27a5fed3cc63492293d3523722b gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: af13db9683dc162c34c705c7d7cc7b8adbc6e894643c38d449777d98da6ca1cf all runs: OK false negative chance: 0.000 # git bisect good 3d78abdeb86dc27a5fed3cc63492293d3523722b Bisecting: 142 revisions left to test after this (roughly 7 steps) [afc47587aec9fbefabca94da7225f371d1f24ca5] Merge branch 'for-linux-next-fixes' of https://gitlab.freedesktop.org/drm/misc/kernel.git testing commit afc47587aec9fbefabca94da7225f371d1f24ca5 gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: cdb457f060ee1df49267853954f15b054301e7fa720354956b0dbc9ccd889e97 all runs: OK false negative chance: 0.000 # git bisect good afc47587aec9fbefabca94da7225f371d1f24ca5 Bisecting: 71 revisions left to test after this (roughly 6 steps) [60cf86856180ffa470a4a973df70d51caeaece9c] selftests/mm: skip uprobe vma merge test if uprobes are not enabled testing commit 60cf86856180ffa470a4a973df70d51caeaece9c gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: 1b72f6c4e7cf7cb867aa584cb026c9fec612f7e558d6828241efe5c55b57e446 all runs: crashed: KASAN: slab-use-after-free Read in do_sync_mmap_readahead representative crash: KASAN: slab-use-after-free Read in do_sync_mmap_readahead, types: [KASAN] # git bisect bad 60cf86856180ffa470a4a973df70d51caeaece9c Bisecting: 35 revisions left to test after this (roughly 5 steps) [ab3d727c0414a341b9d07bbca7420dbcced8e3ff] readahead: fix return value of page_cache_next_miss() when no hole is found testing commit ab3d727c0414a341b9d07bbca7420dbcced8e3ff gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: f5faaaa7e3bc881d67f5651cf70d37402e08926911e441ac37a038833bf4ced6 all runs: OK false negative chance: 0.000 # git bisect good ab3d727c0414a341b9d07bbca7420dbcced8e3ff Bisecting: 17 revisions left to test after this (roughly 4 steps) [d09666fa6169f926a4a51a1fd4c6b937bcf28cd4] mm/readahead: store folio order in struct file_ra_state testing commit d09666fa6169f926a4a51a1fd4c6b937bcf28cd4 gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: bfbe7a08acd10a39916e25a3f3b0808c99bc0bd2ff254e11c6c29f6f0de48034 all runs: OK false negative chance: 0.000 # git bisect good d09666fa6169f926a4a51a1fd4c6b937bcf28cd4 Bisecting: 8 revisions left to test after this (roughly 3 steps) [35f76aeaf65b2b0cfe3083206675c5fcdf7de365] kernel,cpuset: use node-notifier instead of memory-notifier testing commit 35f76aeaf65b2b0cfe3083206675c5fcdf7de365 gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: c2e53dea8bbe2173927a00da29e841a5525b1b0ea98fc25e1bbf9b8d953a145f run #0: crashed: KASAN: slab-use-after-free Read in do_sync_mmap_readahead run #1: crashed: KASAN: slab-use-after-free Read in do_sync_mmap_readahead run #2: crashed: KASAN: slab-use-after-free Read in do_sync_mmap_readahead run #3: crashed: KASAN: slab-use-after-free Read in do_sync_mmap_readahead run #4: crashed: KASAN: slab-use-after-free Read in do_sync_mmap_readahead run #5: crashed: KASAN: slab-use-after-free Read in do_sync_mmap_readahead run #6: crashed: KASAN: slab-use-after-free Read in do_sync_mmap_readahead run #7: crashed: KASAN: slab-use-after-free Read in do_sync_mmap_readahead run #8: crashed: KASAN: slab-use-after-free Read in do_sync_mmap_readahead run #9: OK representative crash: KASAN: slab-use-after-free Read in do_sync_mmap_readahead, types: [KASAN] # git bisect bad 35f76aeaf65b2b0cfe3083206675c5fcdf7de365 Bisecting: 4 revisions left to test after this (roughly 2 steps) [8695da9583cb5c0c8230e87358c120862e6af779] mm,memory_hotplug: implement numa node notifier testing commit 8695da9583cb5c0c8230e87358c120862e6af779 gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: 8132fac081bd59ea8585a4dd67e90768e9f040acff4712513c68f08254258792 run #0: crashed: KASAN: slab-use-after-free Read in do_sync_mmap_readahead run #1: crashed: KASAN: slab-use-after-free Read in do_sync_mmap_readahead run #2: crashed: KASAN: slab-use-after-free Read in do_sync_mmap_readahead run #3: crashed: KASAN: slab-use-after-free Read in do_sync_mmap_readahead run #4: crashed: KASAN: slab-use-after-free Read in do_sync_mmap_readahead run #5: crashed: KASAN: slab-use-after-free Read in do_sync_mmap_readahead run #6: crashed: KASAN: slab-use-after-free Read in do_sync_mmap_readahead run #7: crashed: KASAN: slab-use-after-free Read in do_sync_mmap_readahead run #8: OK run #9: OK representative crash: KASAN: slab-use-after-free Read in do_sync_mmap_readahead, types: [KASAN] # git bisect bad 8695da9583cb5c0c8230e87358c120862e6af779 Bisecting: 1 revision left to test after this (roughly 1 step) [234682947026611fd5f7f8857f8bbfcb914847c0] mm,slub: do not special case N_NORMAL nodes for slab_nodes testing commit 234682947026611fd5f7f8857f8bbfcb914847c0 gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: 08507031791febe5a74f78db65c0fd0c0230f1340e2cb2d4fd3d971445a34b83 run #0: crashed: KASAN: slab-use-after-free Read in do_sync_mmap_readahead run #1: crashed: KASAN: slab-use-after-free Read in do_sync_mmap_readahead run #2: crashed: KASAN: slab-use-after-free Read in do_sync_mmap_readahead run #3: crashed: KASAN: slab-use-after-free Read in do_sync_mmap_readahead run #4: crashed: KASAN: slab-use-after-free Read in do_sync_mmap_readahead run #5: crashed: KASAN: slab-use-after-free Read in do_sync_mmap_readahead run #6: crashed: KASAN: slab-use-after-free Read in do_sync_mmap_readahead run #7: crashed: KASAN: slab-use-after-free Read in do_sync_mmap_readahead run #8: crashed: KASAN: slab-use-after-free Read in do_sync_mmap_readahead run #9: OK representative crash: KASAN: slab-use-after-free Read in do_sync_mmap_readahead, types: [KASAN] # git bisect bad 234682947026611fd5f7f8857f8bbfcb914847c0 Bisecting: 0 revisions left to test after this (roughly 0 steps) [3b61a3f08949297815b2c77ae2696f54cd339419] mm/filemap: allow arch to request folio size for exec memory testing commit 3b61a3f08949297815b2c77ae2696f54cd339419 gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: 23990eda4150dfceb82030799ff398d70a4878795e30c7c4e2d1c4c4ce2f9477 run #0: crashed: KASAN: slab-use-after-free Read in do_sync_mmap_readahead run #1: crashed: KASAN: slab-use-after-free Read in do_sync_mmap_readahead run #2: crashed: KASAN: slab-use-after-free Read in do_sync_mmap_readahead run #3: crashed: KASAN: slab-use-after-free Read in do_sync_mmap_readahead run #4: crashed: KASAN: slab-use-after-free Read in do_sync_mmap_readahead run #5: crashed: KASAN: slab-use-after-free Read in do_sync_mmap_readahead run #6: crashed: KASAN: slab-use-after-free Read in do_sync_mmap_readahead run #7: crashed: KASAN: slab-use-after-free Read in do_sync_mmap_readahead run #8: crashed: KASAN: slab-use-after-free Read in do_sync_mmap_readahead run #9: OK representative crash: KASAN: slab-use-after-free Read in do_sync_mmap_readahead, types: [KASAN] # git bisect bad 3b61a3f08949297815b2c77ae2696f54cd339419 3b61a3f08949297815b2c77ae2696f54cd339419 is the first bad commit commit 3b61a3f08949297815b2c77ae2696f54cd339419 Author: Ryan Roberts Date: Mon Jun 9 10:27:27 2025 +0100 mm/filemap: allow arch to request folio size for exec memory Change the readahead config so that if it is being requested for an executable mapping, do a synchronous read into a set of folios with an arch-specified order and in a naturally aligned manner. We no longer center the read on the faulting page but simply align it down to the previous natural boundary. Additionally, we don't bother with an asynchronous part. On arm64 if memory is physically contiguous and naturally aligned to the "contpte" size, we can use contpte mappings, which improves utilization of the TLB. When paired with the "multi-size THP" feature, this works well to reduce dTLB pressure. However iTLB pressure is still high due to executable mappings having a low likelihood of being in the required folio size and mapping alignment, even when the filesystem supports readahead into large folios (e.g. XFS). The reason for the low likelihood is that the current readahead algorithm starts with an order-0 folio and increases the folio order by 2 every time the readahead mark is hit. But most executable memory tends to be accessed randomly and so the readahead mark is rarely hit and most executable folios remain order-0. So let's special-case the read(ahead) logic for executable mappings. The trade-off is performance improvement (due to more efficient storage of the translations in iTLB) vs potential for making reclaim more difficult (due to the folios being larger so if a part of the folio is hot the whole thing is considered hot). But executable memory is a small portion of the overall system memory so I doubt this will even register from a reclaim perspective. I've chosen 64K folio size for arm64 which benefits both the 4K and 16K base page size configs. Crucially the same amount of data is still read (usually 128K) so I'm not expecting any read amplification issues. I don't anticipate any write amplification because text is always RO. Note that the text region of an ELF file could be populated into the page cache for other reasons than taking a fault in a mmapped area. The most common case is due to the loader read()ing the header which can be shared with the beginning of text. So some text will still remain in small folios, but this simple, best effort change provides good performance improvements as is. Confine this special-case approach to the bounds of the VMA. This prevents wasting memory for any padding that might exist in the file between sections. Previously the padding would have been contained in order-0 folios and would be easy to reclaim. But now it would be part of a larger folio so more difficult to reclaim. Solve this by simply not reading it into memory in the first place. Benchmarking ============ The below shows pgbench and redis benchmarks on Graviton3 arm64 system. First, confirmation that this patch causes more text to be contained in 64K folios: +----------------------+---------------+---------------+---------------+ | File-backed folios by| system boot | pgbench | redis | | size as percentage of+-------+-------+-------+-------+-------+-------+ | all mapped text mem |before | after |before | after |before | after | +======================+=======+=======+=======+=======+=======+=======+ | base-page-4kB | 78% | 30% | 78% | 11% | 73% | 14% | | thp-aligned-8kB | 1% | 0% | 0% | 0% | 1% | 0% | | thp-aligned-16kB | 17% | 4% | 17% | 3% | 20% | 4% | | thp-aligned-32kB | 1% | 1% | 1% | 2% | 1% | 1% | | thp-aligned-64kB | 3% | 63% | 3% | 81% | 4% | 77% | | thp-aligned-128kB | 0% | 1% | 1% | 1% | 1% | 2% | | thp-unaligned-64kB | 0% | 0% | 0% | 1% | 0% | 1% | | thp-unaligned-128kB | 0% | 1% | 0% | 0% | 0% | 0% | | thp-partial | 0% | 0% | 0% | 1% | 0% | 1% | +----------------------+-------+-------+-------+-------+-------+-------+ | cont-aligned-64kB | 4% | 65% | 4% | 83% | 6% | 79% | +----------------------+-------+-------+-------+-------+-------+-------+ The above shows that for both workloads (each isolated with cgroups) as well as the general system state after boot, the amount of text backed by 4K and 16K folios reduces and the amount backed by 64K folios increases significantly. And the amount of text that is contpte-mapped significantly increases (see last row). And this is reflected in performance improvement. "(I)" indicates a statistically significant improvement. Note TPS and Reqs/sec are rates so bigger is better, ms is time so smaller is better: +-------------+-------------------------------------------+------------+ | Benchmark | Result Class | Improvemnt | +=============+===========================================+============+ | pts/pgbench | Scale: 1 Clients: 1 RO (TPS) | (I) 3.47% | | | Scale: 1 Clients: 1 RO - Latency (ms) | -2.88% | | | Scale: 1 Clients: 250 RO (TPS) | (I) 5.02% | | | Scale: 1 Clients: 250 RO - Latency (ms) | (I) -4.79% | | | Scale: 1 Clients: 1000 RO (TPS) | (I) 6.16% | | | Scale: 1 Clients: 1000 RO - Latency (ms) | (I) -5.82% | | | Scale: 100 Clients: 1 RO (TPS) | 2.51% | | | Scale: 100 Clients: 1 RO - Latency (ms) | -3.51% | | | Scale: 100 Clients: 250 RO (TPS) | (I) 4.75% | | | Scale: 100 Clients: 250 RO - Latency (ms) | (I) -4.44% | | | Scale: 100 Clients: 1000 RO (TPS) | (I) 6.34% | | | Scale: 100 Clients: 1000 RO - Latency (ms)| (I) -5.95% | +-------------+-------------------------------------------+------------+ | pts/redis | Test: GET Connections: 50 (Reqs/sec) | (I) 3.20% | | | Test: GET Connections: 1000 (Reqs/sec) | (I) 2.55% | | | Test: LPOP Connections: 50 (Reqs/sec) | (I) 4.59% | | | Test: LPOP Connections: 1000 (Reqs/sec) | (I) 4.81% | | | Test: LPUSH Connections: 50 (Reqs/sec) | (I) 5.31% | | | Test: LPUSH Connections: 1000 (Reqs/sec) | (I) 4.36% | | | Test: SADD Connections: 50 (Reqs/sec) | (I) 2.64% | | | Test: SADD Connections: 1000 (Reqs/sec) | (I) 4.15% | | | Test: SET Connections: 50 (Reqs/sec) | (I) 3.11% | | | Test: SET Connections: 1000 (Reqs/sec) | (I) 3.36% | +-------------+-------------------------------------------+------------+ Link: https://lkml.kernel.org/r/20250609092729.274960-6-ryan.roberts@arm.com Signed-off-by: Ryan Roberts Reviewed-by: Jan Kara Acked-by: Will Deacon Cc: Chaitanya S Prakash Cc: David Hildenbrand Signed-off-by: Andrew Morton arch/arm64/include/asm/pgtable.h | 8 +++++++ include/linux/pgtable.h | 11 ++++++++++ mm/filemap.c | 47 ++++++++++++++++++++++++++++++++-------- 3 files changed, 57 insertions(+), 9 deletions(-) accumulated error probability: 0.00 culprit signature: 23990eda4150dfceb82030799ff398d70a4878795e30c7c4e2d1c4c4ce2f9477 parent signature: bfbe7a08acd10a39916e25a3f3b0808c99bc0bd2ff254e11c6c29f6f0de48034 revisions tested: 22, total time: 9h10m21.401454564s (build: 4h11m20.545990091s, test: 4h26m1.680546013s) first bad commit: 3b61a3f08949297815b2c77ae2696f54cd339419 mm/filemap: allow arch to request folio size for exec memory recipients (to): ["akpm@linux-foundation.org" "jack@suse.cz" "ryan.roberts@arm.com" "will@kernel.org"] recipients (cc): [] crash: KASAN: slab-use-after-free Read in do_sync_mmap_readahead ================================================================== BUG: KASAN: slab-use-after-free in do_sync_mmap_readahead+0x41f/0x7d0 mm/filemap.c:3282 Read of size 8 at addr ffff88806eb087d0 by task syz.6.119/5889 CPU: 0 UID: 0 PID: 5889 Comm: syz.6.119 Not tainted 6.16.0-rc1-syzkaller #0 PREEMPT(full) 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+0xd2/0x2b0 mm/kasan/report.c:521 kasan_report+0x118/0x150 mm/kasan/report.c:634 do_sync_mmap_readahead+0x41f/0x7d0 mm/filemap.c:3282 filemap_fault+0x4d0/0xd70 mm/filemap.c:3444 __do_fault+0x112/0x290 mm/memory.c:5169 do_read_fault mm/memory.c:5590 [inline] do_fault mm/memory.c:5724 [inline] do_pte_missing mm/memory.c:4251 [inline] handle_pte_fault mm/memory.c:6069 [inline] __handle_mm_fault mm/memory.c:6212 [inline] handle_mm_fault+0x1ba0/0x3e20 mm/memory.c:6381 faultin_page mm/gup.c:1186 [inline] __get_user_pages+0x189a/0x21e0 mm/gup.c:1488 populate_vma_page_range+0x1b5/0x260 mm/gup.c:1922 __mm_populate+0x1ea/0x2b0 mm/gup.c:2025 mm_populate include/linux/mm.h:3353 [inline] vm_mmap_pgoff+0x251/0x370 mm/util.c:584 ksys_mmap_pgoff+0x2be/0x3f0 mm/mmap.c:607 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x8f/0x250 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fcf2ab8e929 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 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:00007fcf2b9de038 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 RAX: ffffffffffffffda RBX: 00007fcf2adb5fa0 RCX: 00007fcf2ab8e929 RDX: 0000000001000006 RSI: 0000000000b36000 RDI: 0000200000000000 RBP: 00007fcf2ac10b39 R08: 0000000000000006 R09: 0000000000000000 R10: 0000000000028011 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fcf2adb5fa0 R15: 00007ffe33968428 Allocated by task 5889: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3e/0x80 mm/kasan/common.c:68 unpoison_slab_object mm/kasan/common.c:319 [inline] __kasan_slab_alloc+0x6c/0x80 mm/kasan/common.c:345 kasan_slab_alloc include/linux/kasan.h:250 [inline] slab_post_alloc_hook mm/slub.c:4148 [inline] slab_alloc_node mm/slub.c:4197 [inline] kmem_cache_alloc_noprof+0x1b1/0x400 mm/slub.c:4204 vm_area_alloc+0x1f/0x130 mm/vma_init.c:31 __mmap_new_vma mm/vma.c:2452 [inline] __mmap_region mm/vma.c:2662 [inline] mmap_region+0xcec/0x1b20 mm/vma.c:2732 do_mmap+0x95c/0xc60 mm/mmap.c:561 vm_mmap_pgoff+0x1c0/0x370 mm/util.c:579 ksys_mmap_pgoff+0x2be/0x3f0 mm/mmap.c:607 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x8f/0x250 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f Freed by task 23: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3e/0x80 mm/kasan/common.c:68 kasan_save_free_info+0x46/0x50 mm/kasan/generic.c:576 poison_slab_object mm/kasan/common.c:247 [inline] __kasan_slab_free+0x62/0x70 mm/kasan/common.c:264 kasan_slab_free include/linux/kasan.h:233 [inline] slab_free_hook mm/slub.c:2381 [inline] slab_free_after_rcu_debug+0x131/0x290 mm/slub.c:4693 rcu_do_batch kernel/rcu/tree.c:2576 [inline] rcu_core+0xbf1/0x1530 kernel/rcu/tree.c:2832 handle_softirqs+0x19a/0x500 kernel/softirq.c:579 run_ksoftirqd+0x28/0x40 kernel/softirq.c:968 smpboot_thread_fn+0x3f7/0x7d0 kernel/smpboot.c:164 kthread+0x598/0x690 kernel/kthread.c:464 ret_from_fork+0x139/0x2d0 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Last potentially related work creation: kasan_save_stack+0x3e/0x60 mm/kasan/common.c:47 kasan_record_aux_stack+0xbd/0xd0 mm/kasan/generic.c:548 slab_free_hook mm/slub.c:2342 [inline] slab_free mm/slub.c:4643 [inline] kmem_cache_free+0x2b5/0x460 mm/slub.c:4745 remove_vma mm/vma.c:465 [inline] vms_complete_munmap_vmas+0x390/0x680 mm/vma.c:1288 __mmap_complete mm/vma.c:2518 [inline] __mmap_region mm/vma.c:2670 [inline] mmap_region+0xc2a/0x1b20 mm/vma.c:2732 do_mmap+0x95c/0xc60 mm/mmap.c:561 vm_mmap_pgoff+0x1c0/0x370 mm/util.c:579 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x8f/0x250 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f The buggy address belongs to the object at ffff88806eb08780 which belongs to the cache vm_area_struct of size 256 The buggy address is located 80 bytes inside of freed 256-byte region [ffff88806eb08780, ffff88806eb08880) The buggy address belongs to the physical page: page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x6eb08 memcg:ffff888077de1b81 flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) page_type: f5(slab) raw: 00fff00000000000 ffff8880112a6b40 dead000000000100 dead000000000122 raw: 0000000000000000 00000000000c000c 00000000f5000000 ffff888077de1b81 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x52cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 2656, tgid 2656 (modprobe), ts 46779968051, free_ts 46769076676 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x168/0x1a0 mm/page_alloc.c:1704 prep_new_page mm/page_alloc.c:1712 [inline] get_page_from_freelist+0x2954/0x2a30 mm/page_alloc.c:3669 __alloc_frozen_pages_noprof+0x26b/0x460 mm/page_alloc.c:4959 alloc_pages_mpol+0x150/0x320 mm/mempolicy.c:2419 alloc_slab_page mm/slub.c:2451 [inline] allocate_slab+0x8a/0x350 mm/slub.c:2619 new_slab mm/slub.c:2673 [inline] ___slab_alloc+0x9dc/0x10e0 mm/slub.c:3859 __slab_alloc mm/slub.c:3949 [inline] __slab_alloc_node mm/slub.c:4024 [inline] slab_alloc_node mm/slub.c:4185 [inline] kmem_cache_alloc_noprof+0x26e/0x400 mm/slub.c:4204 vm_area_dup+0x26/0x610 mm/vma_init.c:122 __split_vma+0x101/0x7f0 mm/vma.c:512 split_vma mm/vma.c:595 [inline] vma_modify+0x1399/0x19b0 mm/vma.c:1626 vma_modify_flags+0x1c9/0x220 mm/vma.c:1644 mprotect_fixup+0x2c4/0x790 mm/mprotect.c:658 do_mprotect_pkey+0x5d8/0x900 mm/mprotect.c:832 __do_sys_mprotect mm/mprotect.c:853 [inline] __se_sys_mprotect mm/mprotect.c:850 [inline] __x64_sys_mprotect+0x7b/0x90 mm/mprotect.c:850 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x8f/0x250 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f page last free pid 23 tgid 23 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1248 [inline] __free_frozen_pages+0xc66/0xe50 mm/page_alloc.c:2706 pagetable_free include/linux/mm.h:2884 [inline] pagetable_dtor_free include/linux/mm.h:2982 [inline] __tlb_remove_table+0x1c3/0x2a0 include/asm-generic/tlb.h:220 __tlb_remove_table_free mm/mmu_gather.c:227 [inline] tlb_remove_table_rcu+0x6e/0xd0 mm/mmu_gather.c:290 rcu_do_batch kernel/rcu/tree.c:2576 [inline] rcu_core+0xbf1/0x1530 kernel/rcu/tree.c:2832 handle_softirqs+0x19a/0x500 kernel/softirq.c:579 run_ksoftirqd+0x28/0x40 kernel/softirq.c:968 smpboot_thread_fn+0x3f7/0x7d0 kernel/smpboot.c:164 kthread+0x598/0x690 kernel/kthread.c:464 ret_from_fork+0x139/0x2d0 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Memory state around the buggy address: ffff88806eb08680: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88806eb08700: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc >ffff88806eb08780: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff88806eb08800: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88806eb08880: fc fc fc fc fc fc fc fc 00 00 00 00 00 00 00 00 ==================================================================