ci starts bisection 2025-09-06 22:12:49.570167484 +0000 UTC m=+239690.457740042 bisecting cause commit starting from be5d4872e528796df9d7425f2bd9b3893eb3a42c building syzkaller on d291dd2d58a1885c00a60561048b6ceb1bf1206a ensuring issue is reproducible on original commit be5d4872e528796df9d7425f2bd9b3893eb3a42c testing commit be5d4872e528796df9d7425f2bd9b3893eb3a42c gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: a86e8fe9feb0320658d9d2a5bcd5e25e78f000ed706eeded1184abe86a06ece7 all runs: crashed: general protection fault in bio_iov_iter_get_pages representative crash: general protection fault in bio_iov_iter_get_pages, types: [DoS] check whether we can drop unnecessary instrumentation disabling configs for [hang memleak ubsan bug_or_warning kasan locking atomic_sleep], they are not needed testing commit be5d4872e528796df9d7425f2bd9b3893eb3a42c gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 74f1374f3d69ac088271f7dba13338d6b7b3919ba2104c6087dd4db0f0df9dd1 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in bio_iov_iter_get_pages representative crash: BUG: unable to handle kernel NULL pointer dereference in bio_iov_iter_get_pages, types: [NULL-POINTER-DEREFERENCE] the bug reproduces without the instrumentation disabling configs for [bug_or_warning kasan locking atomic_sleep hang memleak ubsan], they are not needed kconfig minimization: base=4099 full=8510 leaves diff=2184 split chunks (needed=false): <2184> split chunk #0 of len 2184 into 5 parts testing without sub-chunk 1/5 disabling configs for [hang memleak ubsan bug_or_warning kasan locking atomic_sleep], they are not needed testing commit be5d4872e528796df9d7425f2bd9b3893eb3a42c gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 8f4e99b1fe605ad7aec8f2c9ebac2a094ed67b7868340f19f6390b5ed3c61cec all runs: OK false negative chance: 0.000 testing without sub-chunk 2/5 disabling configs for [atomic_sleep hang memleak ubsan bug_or_warning kasan locking], they are not needed testing commit be5d4872e528796df9d7425f2bd9b3893eb3a42c gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 34815d2dfccb2aec48f99b1576ff5840073618e32f1b3f9fcd073ab47a9cead1 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in bio_iov_iter_get_pages representative crash: BUG: unable to handle kernel NULL pointer dereference in bio_iov_iter_get_pages, types: [NULL-POINTER-DEREFERENCE] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [hang memleak ubsan bug_or_warning kasan locking atomic_sleep], they are not needed testing commit be5d4872e528796df9d7425f2bd9b3893eb3a42c gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: aaa2a404dd643afe77c0d010e35685eccb67bd2e8720fe6bc0c3af3b8ab6345d all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in bio_iov_iter_get_pages representative crash: BUG: unable to handle kernel NULL pointer dereference in bio_iov_iter_get_pages, types: [NULL-POINTER-DEREFERENCE] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [memleak ubsan bug_or_warning kasan locking atomic_sleep hang], they are not needed testing commit be5d4872e528796df9d7425f2bd9b3893eb3a42c gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: c41c75b8fd77c2fb8853f457e50085ed624905323c612d012f358d16929495ea all runs: OK false negative chance: 0.000 testing without sub-chunk 5/5 disabling configs for [memleak ubsan bug_or_warning kasan locking atomic_sleep hang], they are not needed testing commit be5d4872e528796df9d7425f2bd9b3893eb3a42c gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 104548fc2c920006d31cf65a672ab6edbae88bb65f5ff1681477194116112d4b all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in bio_iov_iter_get_pages representative crash: BUG: unable to handle kernel NULL pointer dereference in bio_iov_iter_get_pages, types: [NULL-POINTER-DEREFERENCE] the chunk can be dropped minimized to 874 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_CPU_ATTACK_VECTORS ARCH_HAS_USER_SHADOW_STACK ARCH_SUPPORTS_HUGETLBFS ARCH_SUPPORTS_HUGE_PFNMAP ARCH_SUPPORTS_PMD_PFNMAP ARCH_SUPPORTS_PUD_PFNMAP ARCH_SUPPORTS_SCHED_CLUSTER ARCH_SUPPORTS_SCHED_MC ARCH_SUPPORTS_SCHED_SMT 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_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_SYSCALL BPQETHER BRIDGE BRIDGE_CFM BRIDGE_EBT_802_3 BRIDGE_EBT_AMONG BRIDGE_EBT_ARP BRIDGE_EBT_ARPREPLY 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_VLAN BRIDGE_IGMP_SNOOPING BRIDGE_MRP BRIDGE_NF_EBTABLES BRIDGE_VLAN_FILTERING BSD_DISKLABEL BSD_PROCESS_ACCT_V3 BT BTRFS_ASSERT BTRFS_FS BTRFS_FS_POSIX_ACL 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 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_8254 COMEDI_8255 COMEDI_8255_PCI COMEDI_8255_SA COMEDI_ADL_PCI9118 COMEDI_ADQ12B COMEDI_AIO_AIO12_8 COMEDI_AIO_IIRO_16 COMEDI_AMPLC_DIO200 COMEDI_AMPLC_DIO200_ISA COMEDI_AMPLC_PC236 COMEDI_AMPLC_PC236_ISA COMEDI_AMPLC_PC263_ISA COMEDI_BOND COMEDI_C6XDIGIO COMEDI_DAC02 COMEDI_DAS08 COMEDI_DAS08_ISA COMEDI_DAS16M1 COMEDI_DAS1800 COMEDI_DAS6402 COMEDI_DAS800 COMEDI_DMM32AT COMEDI_DT2801 COMEDI_DT2811 COMEDI_DT2814 COMEDI_DT2815 COMEDI_DT2817 COMEDI_DT282X COMEDI_DT9812 COMEDI_FL512 COMEDI_ISADMA COMEDI_ISA_DRIVERS COMEDI_KCOMEDILIB COMEDI_MISC_DRIVERS COMEDI_MPC624 COMEDI_MULTIQ3 COMEDI_NI_ATMIO16D COMEDI_NI_AT_A2150 COMEDI_NI_AT_AO COMEDI_NI_DAQ_700_CS COMEDI_NI_LABPC COMEDI_NI_LABPC_CS COMEDI_NI_LABPC_ISA COMEDI_NI_LABPC_ISADMA COMEDI_NI_LABPC_PCI COMEDI_NI_USB6501 COMEDI_PARPORT COMEDI_PCI_DRIVERS COMEDI_PCL711 COMEDI_PCL724 COMEDI_PCL726 COMEDI_PCL730 COMEDI_PCL812 COMEDI_PCL816 COMEDI_PCL818 COMEDI_PCM3724 COMEDI_PCMAD COMEDI_PCMCIA_DRIVERS COMEDI_PCMDA12 COMEDI_PCMMIO COMEDI_PCMUIO COMEDI_RTI800 COMEDI_RTI802 COMEDI_S526 COMEDI_TEST 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_CURVE25519 CRYPTO_ARIA CRYPTO_ARIA_AESNI_AVX_X86_64 CRYPTO_BLAKE2B 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_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_BLAKE2S_ARCH CRYPTO_LIB_CHACHA CRYPTO_LIB_CHACHA20POLY1305 CRYPTO_LIB_CHACHA_ARCH CRYPTO_LIB_CURVE25519 CRYPTO_LIB_CURVE25519_GENERIC CRYPTO_LIB_CURVE25519_INTERNAL CRYPTO_LIB_DES CRYPTO_LIB_MD5 CRYPTO_LIB_POLY1305 CRYPTO_LIB_POLY1305_ARCH CRYPTO_LIB_POLY1305_GENERIC CRYPTO_LIB_SHA1_ARCH CRYPTO_LIB_SHA256_ARCH CRYPTO_LIB_SHA512 CRYPTO_LIB_SHA512_ARCH 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_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_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 DLM DMABUF_HEAPS DMA_CMA DRM DVB_CORE ENCRYPTED_KEYS EXTCON FSCACHE FUSE_FS GENEVE GPIOLIB HAMRADIO HAVE_CLK HID_NINTENDO HID_NVIDIA_SHIELD HID_PLAYSTATION HID_SENSOR_HUB HID_SMARTJOYPLUS HID_STEAM HID_THRUSTMASTER IIO INFINIBAND INFINIBAND_ADDR_TRANS INFINIBAND_IPOIB INFINIBAND_RTRS_CLIENT INFINIBAND_USER_ACCESS INFINIBAND_VIRT_DMA INPUT_TABLET INPUT_TOUCHSCREEN INTEL_SCU_IPC INTEL_SOC_PMIC_BXTWC IOSCHED_BFQ IP_SCTP ISA_BUS L2TP LEDS_CLASS_MULTICOLOR LIBNVDIMM MAC80211 MAC80211_DEBUGFS MAC80211_LEDS MEDIA_COMMON_OPTIONS MEDIA_DIGITAL_TV_SUPPORT MEDIA_PLATFORM_SUPPORT MEDIA_RADIO_SUPPORT MEDIA_SUPPORT MEDIA_USB_SUPPORT MEMORY_HOTPLUG MEMORY_HOTREMOVE MFD_DLN2 MFD_INTEL_PMC_BXT MFD_MT6360 MFD_MT6370 MFD_RETU MMC MTD MTD_UBI NETFILTER_CONNCOUNT NET_CLS_U32 NET_IPGRE NET_IPGRE_DEMUX NET_SCH_DEFAULT NFS_V4_1 NF_NAT_TFTP NF_SOCKET_IPV4 NF_SOCKET_IPV6 NF_TPROXY_IPV4 NF_TPROXY_IPV6 NILFS2_FS NINTENDO_FF NLMON NLS_CODEPAGE_1250 NLS_CODEPAGE_1251 NLS_CODEPAGE_737 NLS_CODEPAGE_775 NLS_CODEPAGE_850 NLS_CODEPAGE_852 NLS_CODEPAGE_855 NLS_CODEPAGE_857 NLS_CODEPAGE_860 NLS_CODEPAGE_861 NLS_CODEPAGE_862 NLS_CODEPAGE_863 NLS_CODEPAGE_864 NLS_CODEPAGE_865 NLS_CODEPAGE_866 NLS_CODEPAGE_869 NLS_CODEPAGE_874 NLS_CODEPAGE_932 NLS_CODEPAGE_936 NLS_CODEPAGE_949 NLS_CODEPAGE_950 NLS_ISO8859_13 NLS_ISO8859_14 NLS_ISO8859_15 NLS_ISO8859_2 NLS_ISO8859_3 NLS_ISO8859_4 NLS_ISO8859_5 NLS_ISO8859_6 NLS_ISO8859_7 NLS_ISO8859_8 NLS_ISO8859_9 NLS_KOI8_R NLS_KOI8_U NLS_MAC_CELTIC NLS_MAC_CENTEURO NLS_MAC_CROATIAN NLS_MAC_CYRILLIC NLS_MAC_GAELIC NLS_MAC_GREEK NLS_MAC_ICELAND NLS_MAC_INUIT NLS_MAC_ROMAN NLS_MAC_ROMANIAN NLS_MAC_TURKISH NLS_UCS2_UTILS NOZOMI NTFS3_FS NTFS3_FS_POSIX_ACL NTFS3_LZX_XPRESS NULL_TTY NUMA_BALANCING NUMA_BALANCING_DEFAULT_ENABLED NUMA_EMU NUMA_KEEP_MEMINFO NVDIMM_DAX NVDIMM_KEYS NVDIMM_PFN NVIDIA_SHIELD_FF NVME_CORE NVME_FABRICS NVME_FC NVME_MULTIPATH NVME_RDMA NVME_TARGET NVME_TARGET_FC NVME_TARGET_FCLOOP NVME_TARGET_LOOP NVME_TARGET_RDMA NVME_TARGET_TCP NVME_TCP N_GSM N_HDLC OCFS2_DEBUG_FS OCFS2_FS OCFS2_FS_O2CB OCFS2_FS_STATS OCFS2_FS_USERSPACE_CLUSTER OF_GPIO OF_PMEM OMFS_FS OPENVSWITCH OPENVSWITCH_GENEVE OPENVSWITCH_GRE OPENVSWITCH_VXLAN OPTEE_STATIC_PROTMEM_POOL ORANGEFS_FS OSF_PARTITION OVERLAY_FS OVERLAY_FS_DEBUG OVERLAY_FS_INDEX OVERLAY_FS_REDIRECT_ALWAYS_FOLLOW OVERLAY_FS_REDIRECT_DIR PACKET_DIAG PAGE_IDLE_FLAG PAGE_REPORTING PAHOLE_HAS_BTF_TAG PAHOLE_HAS_LANG_EXCLUDE PAHOLE_HAS_SPLIT_BTF PARPORT PARPORT_NOT_PC PARTITION_ADVANCED PCCARD PCCARD_NONSTATIC PCIEAER PCI_ENDPOINT PCI_IOV PCMCIA PCMCIA_LOAD_CIS PERCPU_STATS PERSISTENT_KEYRINGS PHYLINK PHY_CPCAP_USB PHY_QCOM_USB_HS PHY_QCOM_USB_HSIC PHY_SAMSUNG_USB2 PHY_TUSB1210 PKCS7_TEST_KEY PKCS8_PRIVATE_KEY_PARSER PLAYSTATION_FF PLFXLC PMIC_OPREGION PM_CLK PNFS_BLOCK PNFS_FILE_LAYOUT PNFS_FLEXFILE_LAYOUT PPP PPPOATM PPPOE PPPOE_HASH_BITS_1 PPPOL2TP PPP_ASYNC PPP_BSDCOMP PPP_DEFLATE PPP_FILTER PPP_MPPE PPP_MULTILINK PPP_SYNC_TTY PPTP PREEMPT PREEMPT_NOTIFIERS PROC_CHILDREN PSAMPLE PSI PSTORE PSTORE_COMPRESS QCOM_QMI_HELPERS QNX4FS_FS QNX6FS_FS QRTR QRTR_TUN RADIO_ADAPTERS RADIO_SHARK RADIO_SHARK2 RADIO_TEA575X RAID6_PQ RAID_ATTRS RC_ATI_REMOTE RC_CORE RC_DEVICES RC_XBOX_DVD RDMA_RXE RDMA_SIW RDS RDS_RDMA RDS_TCP READ_ONLY_THP_FOR_FS REALTEK_AUTOPM REED_SOLOMON REED_SOLOMON_DEC8 REGMAP REGMAP_I2C REGMAP_IRQ REGMAP_MMIO REGMAP_SPI REGULATOR REGULATOR_FIXED_VOLTAGE REGULATOR_TWL4030 RESET_CONTROLLER RFKILL RFKILL_INPUT RFKILL_LEDS RMI4_2D_SENSOR RMI4_CORE RMI4_F03 RMI4_F03_SERIO RMI4_F11 RMI4_F12 RMI4_F30 RMI4_F3A ROMFS_BACKED_BY_BOTH ROMFS_FS ROMFS_ON_BLOCK ROMFS_ON_MTD ROSE RTC_DRV_HID_SENSOR_TIME RXKAD SCHED_CORE SCREEN_INFO SCSI_FC_ATTRS SCSI_HPSA SCSI_ISCSI_ATTRS SCSI_LOGGING SCSI_NETLINK SCSI_SAS_ATA SCSI_SAS_ATTRS SCSI_SAS_LIBSAS SCSI_SCAN_ASYNC SCSI_SRP_ATTRS SCTP_DEFAULT_COOKIE_HMAC_SHA256 SECONDARY_TRUSTED_KEYRING SECURITY_INFINIBAND SECURITY_NETWORK_XFRM SENSORS_AQUACOMPUTER_D5NEXT SENSORS_CORSAIR_CPRO SENSORS_CORSAIR_PSU SENSORS_GIGABYTE_WATERFORCE SENSORS_NZXT_KRAKEN2 SENSORS_NZXT_SMART2 SENSORS_POWERZ SERIAL_DEV_BUS SERIAL_DEV_CTRL_TTYPORT SERIAL_MCTRL_GPIO SGI_PARTITION SIGNATURE SIGNED_PE_FILE_VERIFICATION SKB_DECRYPTED SLHC SLIP SLIP_COMPRESSED SLIP_MODE_SLIP6 SLIP_SMART SMARTJOYPLUS_FF SMBFS SMB_SERVER SMC SMC_DIAG SMSC_PHY SMS_SDIO_DRV SMS_SIANO_DEBUGFS SMS_SIANO_MDTV SMS_SIANO_RC SMS_USB_DRV SND SND_ALOOP SND_BCD2000 SND_CTL_FAST_LOOKUP SND_CTL_LED SND_DEBUG SND_DMA_SGBUF SND_DRIVERS SND_DUMMY SND_DYNAMIC_MINORS SND_HDA SND_HDA_CODEC_ALC260 SND_HDA_CODEC_ALC262 SND_HDA_CODEC_ALC268 SND_HDA_CODEC_ALC269 SND_HDA_CODEC_ALC662 SND_HDA_CODEC_ALC680 SND_HDA_CODEC_ALC861 SND_HDA_CODEC_ALC861VD SND_HDA_CODEC_ALC880 SND_HDA_CODEC_ALC882 SND_HDA_CODEC_ANALOG SND_HDA_CODEC_CA0110 SND_HDA_CODEC_CA0132 SND_HDA_CODEC_CIRRUS SND_HDA_CODEC_CMEDIA SND_HDA_CODEC_CONEXANT SND_HDA_CODEC_CS420X SND_HDA_CODEC_CS421X SND_HDA_CODEC_HDMI SND_HDA_CODEC_HDMI_ATI SND_HDA_CODEC_HDMI_GENERIC SND_HDA_CODEC_HDMI_INTEL SND_HDA_CODEC_HDMI_NVIDIA SND_HDA_CODEC_HDMI_NVIDIA_MCP SND_HDA_CODEC_HDMI_SIMPLE SND_HDA_CODEC_HDMI_TEGRA SND_HDA_CODEC_REALTEK SND_HDA_CODEC_REALTEK_LIB SND_HDA_CODEC_SI3054 SND_HDA_CODEC_SIGMATEL SND_HDA_CODEC_VIA SND_HDA_COMPONENT SND_HDA_CORE SND_HDA_GENERIC SND_HDA_GENERIC_LEDS SND_HDA_HWDEP SND_HDA_I915 SND_HDA_INPUT_BEEP SND_HDA_INTEL SND_HDA_PATCH_LOADER SND_HDA_RECONFIG SND_HDA_SCODEC_COMPONENT SND_HRTIMER SND_HWDEP SND_INTEL_DSP_CONFIG SND_INTEL_NHLT SND_INTEL_SOUNDWIRE_ACPI SND_JACK SND_JACK_INPUT_DEV SND_MIXER_OSS SND_OSSEMUL SND_PCI SND_PCM SND_PCMCIA SND_PCM_ELD SND_PCM_OSS SND_PCM_OSS_PLUGINS SND_PCM_TIMER SND_PCM_XRUN_DEBUG SND_PROC_FS SND_RAWMIDI SND_SEQUENCER SND_SEQUENCER_OSS SND_SEQ_DEVICE SND_SEQ_DUMMY SND_SEQ_HRTIMER_DEFAULT SND_SEQ_MIDI SND_SEQ_MIDI_EVENT SND_SEQ_VIRMIDI SND_SOC SND_SOC_I2C_AND_SPI SND_SOC_SDCA_OPTIONAL SND_SUPPORT_OLD_API SND_TIMER SND_UMP SND_UMP_LEGACY_RAWMIDI SND_USB SND_USB_6FIRE SND_USB_AUDIO SND_USB_AUDIO_MIDI_V2 SND_USB_AUDIO_USE_MEDIA_CONTROLLER SND_USB_CAIAQ SND_USB_CAIAQ_INPUT SND_USB_HIFACE SND_USB_LINE6 SND_USB_POD SND_USB_PODHD SND_USB_TONEPORT SND_USB_UA101 SND_USB_US122L SND_USB_USX2Y SND_USB_VARIAX SND_VERBOSE_PROCFS SND_VIRMIDI SND_VIRTIO SND_VMASTER SND_X86 SOCK_VALIDATE_XMIT SOLARIS_X86_PARTITION SONY_FF SOUND SOUNDWIRE SOUND_OSS_CORE SOUND_OSS_CORE_PRECLAIM SPI SPI_DLN2 SPI_DYNAMIC SPI_LJCA SPI_MASTER SQUASHFS SQUASHFS_4K_DEVBLK_SIZE SQUASHFS_COMPILE_DECOMP_MULTI SQUASHFS_DECOMP_MULTI SQUASHFS_FILE_DIRECT SQUASHFS_LZ4 SQUASHFS_LZO SQUASHFS_XATTR SQUASHFS_XZ SQUASHFS_ZLIB SQUASHFS_ZSTD SSB SSB_PCIHOST_POSSIBLE SSB_PCMCIAHOST_POSSIBLE SSB_SDIOHOST_POSSIBLE STEAM_FF STP STREAM_PARSER SUNRPC_BACKCHANNEL SUN_PARTITION SURFACE_AGGREGATOR SURFACE_AGGREGATOR_BUS SURFACE_AGGREGATOR_REGISTRY SURFACE_HID SURFACE_HID_CORE SURFACE_KBD SW_SYNC SYSFB SYSFS_SYSCALL SYSV68_PARTITION TABLET_USB_ACECAD TABLET_USB_AIPTEK TABLET_USB_HANWANG TABLET_USB_KBTAB TABLET_USB_PEGASUS TAHVO_USB TAHVO_USB_HOST_BY_DEFAULT TCG_CRB TCG_TIS TCG_TIS_CORE TCG_TPM TCP_CONG_BBR TCP_CONG_BIC TCP_CONG_CDG TCP_CONG_DCTCP TCP_CONG_HSTCP TCP_CONG_HTCP TCP_CONG_HYBLA TCP_CONG_ILLINOIS TCP_CONG_LP TCP_CONG_NV TCP_CONG_SCALABLE TCP_CONG_VEGAS TCP_CONG_VENO TCP_CONG_WESTWOOD TCP_CONG_YEAH TEE TEE_DMABUF_HEAPS 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 TRACEFS_AUTOMOUNT_DEPRECATED TRANSPARENT_HUGEPAGE TRANSPARENT_HUGEPAGE_MADVISE TTPCI_EEPROM TTY_PRINTK TUN_VNET_CROSS_LE TWL4030_CORE TYPEC TYPEC_ANX7411 TYPEC_DP_ALTMODE TYPEC_FUSB302 TYPEC_HD3SS3220 TYPEC_MT6360 TYPEC_MUX_FSA4480 TYPEC_MUX_GPIO_SBU TYPEC_MUX_INTEL_PMC TYPEC_MUX_NB7VPQ904M TYPEC_MUX_PTN36502 TYPEC_MUX_WCD939X_USBSS TYPEC_NVIDIA_ALTMODE TYPEC_RT1711H TYPEC_RT1719 TYPEC_STUSB160X TYPEC_TCPCI TYPEC_TCPCI_MAXIM TYPEC_TCPCI_MT6370 TYPEC_TCPM TYPEC_TPS6598X TYPEC_UCSI TYPEC_WCOVE TYPEC_WUSB3801 UBIFS_ATIME_SUPPORT UBIFS_FS UBIFS_FS_ADVANCED_COMPR UBIFS_FS_LZO UBIFS_FS_SECURITY UBIFS_FS_XATTR UBIFS_FS_ZLIB UBIFS_FS_ZSTD UCSI_ACPI UCSI_CCG UCSI_STM32G0 UDF_FS UDMABUF UFS_FS UFS_FS_WRITE UHID ULTRIX_PARTITION UNICODE UNIXWARE_DISKLABEL UNIX_DIAG USB4 USB4_NET USBIP_CORE USBIP_HOST USBIP_VHCI_HCD USBIP_VUDC USBPCWATCHDOG USB_DWC2 USB_GADGET USB_LJCA USB_MUSB_HDRC USB_PHY USB_ROLE_SWITCH USB_STORAGE_REALTEK USB_ULPI_BUS VIDEO_DEV VLAN_8021Q VXLAN WANT_COMPAT_NETLINK_MESSAGES WEXT_CORE WIRELESS WLAN WLAN_VENDOR_ATH WLAN_VENDOR_PURELIFI ZONE_DEVICE] disabling configs for [bug_or_warning kasan locking atomic_sleep hang memleak ubsan], 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 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 3534dfe978ecbe1a17547614fda4d465a95cb00c5292b6d34046522ede4c09cb all runs: OK false negative chance: 0.000 # git bisect start be5d4872e528796df9d7425f2bd9b3893eb3a42c 038d61fd642278bab63ee8ef722c50d10ab01e8f Bisecting: 10101 revisions left to test after this (roughly 13 steps) [99f9a97dce39ad413c39b92c90393bbd6778f3fd] exfat: add cluster chain loop check for dir testing commit 99f9a97dce39ad413c39b92c90393bbd6778f3fd gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 7560ca1504bde0768d41adbaf984f5424f0a8043e4fd53a33a235d1ef90c43bd all runs: OK false negative chance: 0.000 # git bisect good 99f9a97dce39ad413c39b92c90393bbd6778f3fd Bisecting: 5063 revisions left to test after this (roughly 12 steps) [e47de0e885d292af495463a38c3330e3b2d5b72f] Merge branch 'next' of git://git.monstr.eu/linux-2.6-microblaze.git testing commit e47de0e885d292af495463a38c3330e3b2d5b72f gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 88e392d267d53013b394ae310e2dc8556822074f13111d6c89f78f754837436f all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in bio_iov_iter_get_pages representative crash: BUG: unable to handle kernel NULL pointer dereference in bio_iov_iter_get_pages, types: [NULL-POINTER-DEREFERENCE] # git bisect bad e47de0e885d292af495463a38c3330e3b2d5b72f Bisecting: 2517 revisions left to test after this (roughly 11 steps) [51f27beeb79f9f92682158999bab489ff4fa16f6] Merge branch 'fixes-on-the-microchip-s-lan865x-driver' testing commit 51f27beeb79f9f92682158999bab489ff4fa16f6 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 702ebb592c809e9169c91d8a975405a0863e188ab6684feb7dde6506ff8c0f4f all runs: OK false negative chance: 0.000 # git bisect good 51f27beeb79f9f92682158999bab489ff4fa16f6 Bisecting: 1273 revisions left to test after this (roughly 10 steps) [5fe42852269dc659c8d511864410bd5cf3393e91] Merge branch 'for-linux-next-fixes' of https://gitlab.freedesktop.org/drm/misc/kernel.git testing commit 5fe42852269dc659c8d511864410bd5cf3393e91 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 489af2524d628349c9574de07e3e07d98363f96bb57b0025eeea7ca82b4c2309 all runs: OK false negative chance: 0.000 # git bisect good 5fe42852269dc659c8d511864410bd5cf3393e91 Bisecting: 651 revisions left to test after this (roughly 9 steps) [4e74a3f923a5f7433dde4d5dc14acde1bb76d2c3] Merge branch 'soc_fsl' of https://github.com/chleroy/linux.git testing commit 4e74a3f923a5f7433dde4d5dc14acde1bb76d2c3 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: dd8c6873ce613ecf57136b5351518bb481893b0564166a9706e0248187badb9a all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in bio_iov_iter_get_pages representative crash: BUG: unable to handle kernel NULL pointer dereference in bio_iov_iter_get_pages, types: [NULL-POINTER-DEREFERENCE] # git bisect bad 4e74a3f923a5f7433dde4d5dc14acde1bb76d2c3 Bisecting: 331 revisions left to test after this (roughly 8 steps) [e3b5cbf17d81ec24acd6354220abc27e297a015c] Merge branch 'mm-unstable' of https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm testing commit e3b5cbf17d81ec24acd6354220abc27e297a015c gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 71bf0eeb31e41539494a2f223138c8e966fa08ce2ffaff417ccc3383458abff7 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in bio_iov_iter_get_pages representative crash: BUG: unable to handle kernel NULL pointer dereference in bio_iov_iter_get_pages, types: [NULL-POINTER-DEREFERENCE] # git bisect bad e3b5cbf17d81ec24acd6354220abc27e297a015c Bisecting: 144 revisions left to test after this (roughly 7 steps) [4293c71be22eee8ff86c55769cd9a56594e77dd1] mm/filemap: skip non-uptodate folio if there are available folios testing commit 4293c71be22eee8ff86c55769cd9a56594e77dd1 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: ecaad67e82a0a1cea78e279f388149dc4c29e85b2b270e497007330e17277fd4 all runs: OK false negative chance: 0.000 # git bisect good 4293c71be22eee8ff86c55769cd9a56594e77dd1 Bisecting: 72 revisions left to test after this (roughly 6 steps) [43449422ee7551f08a6e573ca62131c561b2736e] task_stack.h: clean-up stack_not_used() implementation testing commit 43449422ee7551f08a6e573ca62131c561b2736e gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: fc20af0895bcd260b273bfe1a4147c5a0efa03e178f768cbeb7737f35e61a58f all runs: OK false negative chance: 0.000 # git bisect good 43449422ee7551f08a6e573ca62131c561b2736e Bisecting: 36 revisions left to test after this (roughly 5 steps) [60c71caab37ccc18edb0c722343affdd9bbe51dc] vfio/pci: drop nth_page() usage within SG entry testing commit 60c71caab37ccc18edb0c722343affdd9bbe51dc gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 803a27a0908ba0d0c2896525f266455864c99a05263883f545c7a0a19eb1d027 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in bio_iov_iter_get_pages representative crash: BUG: unable to handle kernel NULL pointer dereference in bio_iov_iter_get_pages, types: [NULL-POINTER-DEREFERENCE] # git bisect bad 60c71caab37ccc18edb0c722343affdd9bbe51dc Bisecting: 17 revisions left to test after this (roughly 4 steps) [55a90aff055ec948685b104c9b27618f3db45981] mm/mm/percpu-km: drop nth_page() usage within single allocation testing commit 55a90aff055ec948685b104c9b27618f3db45981 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 0d22259c16eeb6db0abb2c7f50aa12a083cfacae9aca37ee478cf34b7da1735f all runs: OK false negative chance: 0.000 # git bisect good 55a90aff055ec948685b104c9b27618f3db45981 Bisecting: 8 revisions left to test after this (roughly 3 steps) [62fd63f4688f40f01a6df23225523ece10d4b69a] dma-remap: drop nth_page() in dma_common_contiguous_remap() testing commit 62fd63f4688f40f01a6df23225523ece10d4b69a gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: bebee35f81674701d1eac115f56d22ac86ac6c9624e27f3275d2309bb39bbd4b all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in bio_iov_iter_get_pages representative crash: BUG: unable to handle kernel NULL pointer dereference in bio_iov_iter_get_pages, types: [NULL-POINTER-DEREFERENCE] # git bisect bad 62fd63f4688f40f01a6df23225523ece10d4b69a Bisecting: 4 revisions left to test after this (roughly 2 steps) [21999f6315d786cbd21d5b2d0ad56f3f6125279f] mm/gup: drop nth_page() usage within folio when recording subpages testing commit 21999f6315d786cbd21d5b2d0ad56f3f6125279f gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: fd0ab5950bb621c611f3c7fbf0bb633070571bbba33dbb3f53f4ceebfd1cece9 all runs: OK false negative chance: 0.000 # git bisect good 21999f6315d786cbd21d5b2d0ad56f3f6125279f Bisecting: 2 revisions left to test after this (roughly 1 step) [6b4f1539c49f6f2f750a150e863b2597f8e7de87] io_uring/zcrx: remove nth_page() usage within folio testing commit 6b4f1539c49f6f2f750a150e863b2597f8e7de87 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: a051395116a204626327ac2193978193ac5be0eee58adaffbf5281ed35b34975 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in bio_iov_iter_get_pages representative crash: BUG: unable to handle kernel NULL pointer dereference in bio_iov_iter_get_pages, types: [NULL-POINTER-DEREFERENCE] # git bisect bad 6b4f1539c49f6f2f750a150e863b2597f8e7de87 Bisecting: 0 revisions left to test after this (roughly 0 steps) [db076b5db550aa34169dceee81d0974c7b2a2482] mm/gup: remove record_subpages() testing commit db076b5db550aa34169dceee81d0974c7b2a2482 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 8941d80eb53cd682de2908c33f4ecf7f7448049b589685cadf603ed161ef0573 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in bio_iov_iter_get_pages representative crash: BUG: unable to handle kernel NULL pointer dereference in bio_iov_iter_get_pages, types: [NULL-POINTER-DEREFERENCE] # git bisect bad db076b5db550aa34169dceee81d0974c7b2a2482 db076b5db550aa34169dceee81d0974c7b2a2482 is the first bad commit commit db076b5db550aa34169dceee81d0974c7b2a2482 Author: David Hildenbrand Date: Mon Sep 1 17:03:40 2025 +0200 mm/gup: remove record_subpages() We can just cleanup the code by calculating the #refs earlier, so we can just inline what remains of record_subpages(). Calculate the number of references/pages ahead of times, and record them only once all our tests passed. Link: https://lkml.kernel.org/r/20250901150359.867252-20-david@redhat.com Signed-off-by: David Hildenbrand Signed-off-by: Andrew Morton mm/gup.c | 25 ++++++++----------------- 1 file changed, 8 insertions(+), 17 deletions(-) accumulated error probability: 0.00 culprit signature: 8941d80eb53cd682de2908c33f4ecf7f7448049b589685cadf603ed161ef0573 parent signature: fd0ab5950bb621c611f3c7fbf0bb633070571bbba33dbb3f53f4ceebfd1cece9 revisions tested: 22, total time: 8h35m29.687812909s (build: 4h58m28.279959199s, test: 2h41m11.635506777s) first bad commit: db076b5db550aa34169dceee81d0974c7b2a2482 mm/gup: remove record_subpages() recipients (to): ["akpm@linux-foundation.org" "david@redhat.com" "linux-kernel@vger.kernel.org"] recipients (cc): ["akpm@linux-foundation.org" "david@redhat.com" "jgg@ziepe.ca" "jhubbard@nvidia.com" "linux-mm@kvack.org" "peterx@redhat.com"] crash: BUG: unable to handle kernel NULL pointer dereference in bio_iov_iter_get_pages BUG: kernel NULL pointer dereference, address: 0000000000000008 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 8000000110221067 P4D 8000000110221067 PUD 0 Oops: Oops: 0000 [#1] SMP PTI CPU: 0 UID: 0 PID: 3965 Comm: syz.2.19 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 RIP: 0010:_compound_head include/linux/page-flags.h:284 [inline] RIP: 0010:__bio_iov_iter_get_pages block/bio.c:1258 [inline] RIP: 0010:bio_iov_iter_get_pages+0x167/0x410 block/bio.c:1336 Code: 18 45 31 e4 eb 15 48 c7 44 24 20 00 00 00 00 45 01 f4 4d 29 fd 0f 84 db 01 00 00 45 89 e6 48 8b 44 24 28 44 89 e1 48 8b 04 c8 <48> 8b 68 08 40 f6 c5 01 0f 85 a9 01 00 00 0f 1f 44 00 00 48 89 c5 RSP: 0018:ffffc90003b57a18 EFLAGS: 00010206 RAX: 0000000000000000 RBX: ffff888106b83f00 RCX: 00000000000000d0 RDX: 0000000000001000 RSI: ffffea00046191c0 RDI: ffff888106b83f00 RBP: ffffea00046191c0 R08: 0000000000000a00 R09: 000000000000001a R10: 0000000000000000 R11: 0100000000000000 R12: 00000000000000d0 R13: 0000000000030000 R14: 00000000000000d0 R15: 0000000000001000 FS: 00007fa06086c6c0(0000) GS:ffff8881b602c000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000008 CR3: 0000000105b52000 CR4: 00000000003506f0 Call Trace: __blkdev_direct_IO+0x1a5/0x3b0 block/fops.c:215 blkdev_direct_IO+0x4da/0x500 block/fops.c:433 blkdev_direct_write+0x2d/0x90 block/fops.c:716 blkdev_write_iter+0x166/0x1d0 block/fops.c:784 aio_write+0x284/0x330 fs/aio.c:1634 __io_submit_one fs/aio.c:-1 [inline] io_submit_one+0x4b8/0x6d0 fs/aio.c:2053 __do_sys_io_submit fs/aio.c:2112 [inline] __se_sys_io_submit+0xce/0x1e0 fs/aio.c:2082 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: 0033:0x7fa05f98ebe9 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:00007fa06086c038 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1 RAX: ffffffffffffffda RBX: 00007fa05fbc5fa0 RCX: 00007fa05f98ebe9 RDX: 00002000000000c0 RSI: 00000000000000f3 RDI: 00007fa06084b000 RBP: 00007fa05fa11e19 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fa05fbc6038 R14: 00007fa05fbc5fa0 R15: 00007ffeb1dc9218 Modules linked in: CR2: 0000000000000008 ---[ end trace 0000000000000000 ]--- RIP: 0010:_compound_head include/linux/page-flags.h:284 [inline] RIP: 0010:__bio_iov_iter_get_pages block/bio.c:1258 [inline] RIP: 0010:bio_iov_iter_get_pages+0x167/0x410 block/bio.c:1336 Code: 18 45 31 e4 eb 15 48 c7 44 24 20 00 00 00 00 45 01 f4 4d 29 fd 0f 84 db 01 00 00 45 89 e6 48 8b 44 24 28 44 89 e1 48 8b 04 c8 <48> 8b 68 08 40 f6 c5 01 0f 85 a9 01 00 00 0f 1f 44 00 00 48 89 c5 RSP: 0018:ffffc90003b57a18 EFLAGS: 00010206 RAX: 0000000000000000 RBX: ffff888106b83f00 RCX: 00000000000000d0 RDX: 0000000000001000 RSI: ffffea00046191c0 RDI: ffff888106b83f00 RBP: ffffea00046191c0 R08: 0000000000000a00 R09: 000000000000001a R10: 0000000000000000 R11: 0100000000000000 R12: 00000000000000d0 R13: 0000000000030000 R14: 00000000000000d0 R15: 0000000000001000 FS: 00007fa06086c6c0(0000) GS:ffff8881b602c000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000008 CR3: 0000000105b52000 CR4: 00000000003506f0 ---------------- Code disassembly (best guess): 0: 18 45 31 sbb %al,0x31(%rbp) 3: e4 eb in $0xeb,%al 5: 15 48 c7 44 24 adc $0x2444c748,%eax a: 20 00 and %al,(%rax) c: 00 00 add %al,(%rax) e: 00 45 01 add %al,0x1(%rbp) 11: f4 hlt 12: 4d 29 fd sub %r15,%r13 15: 0f 84 db 01 00 00 je 0x1f6 1b: 45 89 e6 mov %r12d,%r14d 1e: 48 8b 44 24 28 mov 0x28(%rsp),%rax 23: 44 89 e1 mov %r12d,%ecx 26: 48 8b 04 c8 mov (%rax,%rcx,8),%rax * 2a: 48 8b 68 08 mov 0x8(%rax),%rbp <-- trapping instruction 2e: 40 f6 c5 01 test $0x1,%bpl 32: 0f 85 a9 01 00 00 jne 0x1e1 38: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 3d: 48 89 c5 mov %rax,%rbp