ci2 starts bisection 2024-10-06 20:28:00.045100921 +0000 UTC m=+279767.625951432 bisecting fixing commit since d7af3e5ba454d007b4939f858739cf1cecdeab46 building syzkaller on 058b3a5a6a945a55767811552eb7b9f4a20307f8 ensuring issue is reproducible on original commit d7af3e5ba454d007b4939f858739cf1cecdeab46 testing commit d7af3e5ba454d007b4939f858739cf1cecdeab46 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 655e6488fa7e4802086d77778e252f9c231d3ac53af7ae06abd93e11d3cbba38 all runs: crashed: WARNING in skb_checksum_help representative crash: WARNING in skb_checksum_help, types: [WARNING] check whether we can drop unnecessary instrumentation disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN KASAN], they are not needed testing commit d7af3e5ba454d007b4939f858739cf1cecdeab46 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 68d68b6d78d68e118f754eb7fce07fe6de46757cb51f2431331a4459742f2931 all runs: crashed: WARNING in skb_checksum_help representative crash: WARNING in skb_checksum_help, types: [WARNING] the bug reproduces without the instrumentation disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN KASAN], they are not needed kconfig minimization: base=3706 full=7271 leaves diff=1987 split chunks (needed=false): <1987> split chunk #0 of len 1987 into 5 parts testing without sub-chunk 1/5 disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN KASAN LOCKDEP], they are not needed testing commit d7af3e5ba454d007b4939f858739cf1cecdeab46 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6e86c025f79248d6cbfa1bee6e4d00ddd920fde69f2f2033b792da5925f3c093 all runs: crashed: WARNING in skb_checksum_help representative crash: WARNING in skb_checksum_help, types: [WARNING] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed testing commit d7af3e5ba454d007b4939f858739cf1cecdeab46 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: f4110c1d6544222957acd375d56c012d1066c2793c63a22aa7521895241c9e3a all runs: crashed: WARNING in skb_checksum_help representative crash: WARNING in skb_checksum_help, types: [WARNING] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN KASAN], they are not needed testing commit d7af3e5ba454d007b4939f858739cf1cecdeab46 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 5b06c68d0cd09c4c11b9c473d7144dccadd8d8d34b9b4523d8d174d8ee00ee2b all runs: crashed: WARNING in skb_checksum_help representative crash: WARNING in skb_checksum_help, types: [WARNING] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN KASAN], they are not needed testing commit d7af3e5ba454d007b4939f858739cf1cecdeab46 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6e320300242f3729df1a1c925bb07b0fc04c6a6a708d8c1ca152b39518946cc8 all runs: OK false negative chance: 0.000 testing without sub-chunk 5/5 disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN KASAN], they are not needed testing commit d7af3e5ba454d007b4939f858739cf1cecdeab46 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: e500b226629bba601bd2570457e9b22c662395401aa9eb81ebd849326edfa451 all runs: OK false negative chance: 0.000 minimized to 793 configs; suspects: [AF_RXRPC ARCH_ENABLE_MEMORY_HOTREMOVE ASYMMETRIC_TPM_KEY_SUBTYPE ATM AX25 BCMA BLK_DEV_ZONED BPF_SYSCALL CARDBUS CFG80211 CFG80211_WEXT CMA CONTIG_ALLOC CRYPTO_842 CRYPTO_LZ4 CRYPTO_LZ4HC CRYPTO_LZO CRYPTO_ZSTD DAX DLM DVB_CORE ENCRYPTED_KEYS EXTCON FB FRONTSWAP GENEVE GPIOLIB HAMRADIO HID_SENSOR_HUB HID_SMARTJOYPLUS HID_THRUSTMASTER HID_ZEROPLUS I2C_MUX IIO INFINIBAND INFINIBAND_ADDR_TRANS INFINIBAND_IPOIB INFINIBAND_USER_ACCESS INFINIBAND_VIRT_DMA INPUT_TABLET INPUT_TOUCHSCREEN IP_SCTP IRQ_REMAP L2TP LIBCRC32C LIBNVDIMM MEDIA_ANALOG_TV_SUPPORT MEDIA_CAMERA_SUPPORT MEDIA_CEC_SUPPORT MEDIA_COMMON_OPTIONS MEDIA_CONTROLLER MEDIA_DIGITAL_TV_SUPPORT MEDIA_RADIO_SUPPORT MEDIA_SDR_SUPPORT MEDIA_SUPPORT MEDIA_TEST_SUPPORT MEDIA_USB_SUPPORT MEMORY_HOTPLUG MEMORY_HOTPLUG_SPARSE MEMORY_HOTREMOVE MFD_DLN2 MFD_RETU MFD_VIPERBOARD MMC MTD MTD_UBI NETFILTER_CONNCOUNT NET_IPGRE NET_IPGRE_DEMUX NFS_V4_1 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 NOP_USB_XCEIV NOZOMI NTFS3_FS NTFS3_FS_POSIX_ACL NTFS3_LZX_XPRESS NTFS_FS NTFS_RW NULL_TTY NUMA_BALANCING NUMA_BALANCING_DEFAULT_ENABLED NUMA_EMU NUMA_KEEP_MEMINFO NVDIMM_DAX NVDIMM_KEYS NVDIMM_PFN NVME_CORE NVME_FABRICS NVME_FC NVME_MULTIPATH NVME_RDMA NVME_TARGET NVME_TARGET_FC NVME_TARGET_FCLOOP NVME_TARGET_LOOP NVME_TARGET_RDMA NVME_TARGET_TCP NVME_TCP N_GSM N_HDLC OCFS2_DEBUG_FS OCFS2_FS OCFS2_FS_O2CB OCFS2_FS_STATS OCFS2_FS_USERSPACE_CLUSTER OF_GPIO OF_PMEM OMFS_FS OPENVSWITCH OPENVSWITCH_GENEVE OPENVSWITCH_GRE OPENVSWITCH_VXLAN ORANGEFS_FS OSF_PARTITION OVERLAY_FS OVERLAY_FS_INDEX OVERLAY_FS_REDIRECT_ALWAYS_FOLLOW OVERLAY_FS_REDIRECT_DIR PACKET_DIAG PADATA PAGE_IDLE_FLAG PAGE_REPORTING PAHOLE_HAS_SPLIT_BTF PARPORT PARPORT_NOT_PC PARTITION_ADVANCED PCCARD PCCARD_NONSTATIC PCIEAER PCI_ENDPOINT PCI_IOV PCMCIA 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USB_SERIAL_EDGEPORT_TI USB_SERIAL_EMPEG USB_SERIAL_F81232 USB_SERIAL_F8153X USB_SERIAL_FTDI_SIO USB_SERIAL_GARMIN USB_SERIAL_GENERIC USB_SERIAL_IPAQ USB_SERIAL_IPW USB_SERIAL_IR USB_SERIAL_IUU USB_SERIAL_KEYSPAN USB_SERIAL_KEYSPAN_PDA USB_SERIAL_KLSI USB_SERIAL_KOBIL_SCT USB_SERIAL_MCT_U232 USB_SERIAL_METRO USB_SERIAL_MOS7715_PARPORT USB_SERIAL_MOS7720 USB_SERIAL_MOS7840 USB_SERIAL_MXUPORT USB_SERIAL_NAVMAN USB_SERIAL_OMNINET USB_SERIAL_OPTICON USB_SERIAL_OPTION USB_SERIAL_OTI6858 USB_SERIAL_PL2303 USB_SERIAL_QCAUX USB_SERIAL_QT2 USB_SERIAL_QUALCOMM USB_SERIAL_SAFE USB_SERIAL_SIERRAWIRELESS USB_SERIAL_SIMPLE USB_SERIAL_SPCP8X5 USB_SERIAL_SSU100 USB_SERIAL_SYMBOL USB_SERIAL_TI USB_SERIAL_UPD78F0730 USB_SERIAL_VISOR USB_SERIAL_WHITEHEAT USB_SERIAL_WISHBONE USB_SERIAL_WWAN USB_SERIAL_XR USB_SERIAL_XSENS_MT USB_SEVSEG USB_SI470X USB_SI4713 USB_SIERRA_NET USB_SISUSBVGA USB_SL811_CS USB_SL811_HCD USB_SL811_HCD_ISO USB_SNP_CORE USB_SPEEDTOUCH USB_STKWEBCAM USB_STORAGE_ALAUDA USB_STORAGE_CYPRESS_ATACB USB_STORAGE_DATAFAB USB_STORAGE_ENE_UB6250 USB_STORAGE_FREECOM USB_STORAGE_ISD200 USB_STORAGE_JUMPSHOT USB_STORAGE_KARMA USB_STORAGE_ONETOUCH USB_STORAGE_REALTEK USB_STORAGE_SDDR09 USB_STORAGE_SDDR55 USB_STORAGE_USBAT USB_STV06XX USB_TEST USB_TMC USB_TRANCEVIBRATOR USB_U132_HCD USB_UAS USB_UEAGLEATM USB_ULPI_BUS USB_USBNET USB_USS720 USB_U_AUDIO USB_U_ETHER USB_U_SERIAL USB_VIDEO_CLASS USB_VIDEO_CLASS_INPUT_EVDEV USB_VL600 USB_WDM USB_XHCI_DBGCAP USB_XHCI_PLATFORM USB_XUSBATM USB_YUREX USB_ZR364XX USERFAULTFD USERIO USERMODE_DRIVER USER_RETURN_NOTIFIER U_SERIAL_CONSOLE V4L2_MEM2MEM_DEV V4L_TEST_DRIVERS VALIDATE_FS_PARSER VDPA VETH VFIO VFIO_IOMMU_TYPE1 VFIO_PCI VFIO_PCI_CORE VFIO_PCI_INTX VFIO_PCI_MMAP VFIO_VIRQFD VGASTATE VHOST VHOST_CROSS_ENDIAN_LEGACY VHOST_IOTLB VHOST_NET VHOST_RING VHOST_VDPA VHOST_VSOCK VIDEOBUF2_CORE VIDEOBUF2_DMA_CONTIG VIDEOBUF2_DMA_SG VIDEOBUF2_MEMOPS VIDEOBUF2_V4L2 VIDEOBUF2_VMALLOC VIDEOBUF_GEN VIDEOBUF_VMALLOC VIDEO_AU0828 VIDEO_AU0828_RC VIDEO_AU0828_V4L2 VIDEO_CPIA2 VIDEO_CS53L32A VIDEO_CX231XX VIDEO_CX231XX_ALSA VIDEO_CX231XX_DVB VIDEO_CX231XX_RC VIDEO_CX2341X VIDEO_CX25840 VIDEO_DEV VIDEO_EM28XX VIDEO_EM28XX_ALSA VIDEO_EM28XX_DVB VIDEO_EM28XX_RC VIDEO_EM28XX_V4L2 VIDEO_GO7007 VIDEO_GO7007_LOADER VIDEO_GO7007_USB VIDEO_GO7007_USB_S2250_BOARD VIDEO_HDPVR VIDEO_MSP3400 VIDEO_PVRUSB2 VIDEO_PVRUSB2_DVB VIDEO_PVRUSB2_SYSFS VIDEO_SAA711X VIDEO_STK1160 VIDEO_STK1160_COMMON VIDEO_TM6000 VIDEO_TM6000_ALSA VIDEO_TM6000_DVB VIDEO_TUNER VIDEO_TVEEPROM VIDEO_USBTV VIDEO_V4L2 VIDEO_V4L2_I2C VIDEO_V4L2_SUBDEV_API VIDEO_V4L2_TPG VIDEO_VICODEC VIDEO_VIM2M VIDEO_VIMC VIDEO_VIVID VIDEO_VIVID_CEC VIDEO_WM8775 VIPERBOARD_ADC VIRTIO_BALLOON VIRTIO_DMA_SHARED_BUFFER VIRTIO_MEM VIRTIO_MMIO VIRTIO_MMIO_CMDLINE_DEVICES VIRTIO_PMEM VIRTIO_VDPA VIRTIO_VSOCKETS VIRTIO_VSOCKETS_COMMON VIRT_WIFI VLAN_8021Q VLAN_8021Q_GVRP VLAN_8021Q_MVRP VMAP_PFN VMWARE_VMCI VMXNET3 VP_VDPA VSOCKETS VSOCKETS_DIAG VSOCKETS_LOOPBACK VSOCKMON VT_HW_CONSOLE_BINDING VXFS_FS VXLAN WANT_DEV_COREDUMP WEXT_CORE WEXT_PRIV WEXT_PROC WIREGUARD WIRELESS WIRELESS_EXT WLAN WLAN_VENDOR_ADMTEK X86_SGX X86_X2APIC X86_X32 XARRAY_MULTI XDP_SOCKETS XDP_SOCKETS_DIAG XFRM_ESPINTCP XFRM_INTERFACE XFRM_IPCOMP XFRM_MIGRATE XFRM_OFFLOAD XFRM_STATISTICS XFRM_SUB_POLICY XFRM_USER_COMPAT XFS_FS XFS_POSIX_ACL XFS_QUOTA XFS_RT XFS_SUPPORT_V4 XOR_BLOCKS YENTA YENTA_ENE_TUNE YENTA_O2 YENTA_RICOH YENTA_TI YENTA_TOSHIBA ZBUD ZEROPLUS_FF ZONEFS_FS ZONE_DEVICE ZPOOL ZRAM ZRAM_DEF_COMP_LZORLE ZSMALLOC ZSTD_COMPRESS ZSWAP ZSWAP_COMPRESSOR_DEFAULT_LZO ZSWAP_ZPOOL_DEFAULT_ZBUD] disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed testing current HEAD 3a5928702e7120f83f703fd566082bfb59f1a57e testing commit 3a5928702e7120f83f703fd566082bfb59f1a57e gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ba7d7fe9f201b9972fe889163ef43b11db3746ec80d190102ef00125fe6b6212 all runs: OK false negative chance: 0.000 # git bisect start 3a5928702e7120f83f703fd566082bfb59f1a57e d7af3e5ba454d007b4939f858739cf1cecdeab46 Bisecting: 4375 revisions left to test after this (roughly 12 steps) [0a50ca097a6d20137d0308a1d1386f1ff31cce8c] media: dvbdev: drop refcount on error path in dvb_device_open() determine whether the revision contains the guilty commit revision d7af3e5ba454d007b4939f858739cf1cecdeab46 crashed and is reachable testing commit 0a50ca097a6d20137d0308a1d1386f1ff31cce8c gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 84663c30c77e7c6a58dd7676ea0c5316be40d8a6ff40c8d1b0d8a1ba45736272 all runs: crashed: WARNING in skb_checksum_help representative crash: WARNING in skb_checksum_help, types: [WARNING] # git bisect good 0a50ca097a6d20137d0308a1d1386f1ff31cce8c Bisecting: 2188 revisions left to test after this (roughly 11 steps) [0be237b6b75346202a3cc0b0987dc814ab5be047] x86/bugs: Fix BHI retpoline check determine whether the revision contains the guilty commit revision d7af3e5ba454d007b4939f858739cf1cecdeab46 crashed and is reachable testing commit 0be237b6b75346202a3cc0b0987dc814ab5be047 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 95f689a29bf538e481fdf48a02613f67046b98772239c4af25c2105a7586ec11 all runs: crashed: WARNING in skb_checksum_help representative crash: WARNING in skb_checksum_help, types: [WARNING] # git bisect good 0be237b6b75346202a3cc0b0987dc814ab5be047 Bisecting: 1094 revisions left to test after this (roughly 10 steps) [caee6db7e811ac0c532dc3c0cb815af56162d7a7] gpiolib: of: factor out code overriding gpio line polarity determine whether the revision contains the guilty commit revision 0a50ca097a6d20137d0308a1d1386f1ff31cce8c crashed and is reachable testing commit caee6db7e811ac0c532dc3c0cb815af56162d7a7 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ed36e68009d939332b2412be52571cb2510984d76a8d2ef25a6ac93d2ccdefad all runs: crashed: WARNING in skb_checksum_help representative crash: WARNING in skb_checksum_help, types: [WARNING] # git bisect good caee6db7e811ac0c532dc3c0cb815af56162d7a7 Bisecting: 547 revisions left to test after this (roughly 9 steps) [cb85266c6ca35df0d4d5663e8aed02e1be09954c] l2tp: fix lockdep splat determine whether the revision contains the guilty commit revision d7af3e5ba454d007b4939f858739cf1cecdeab46 crashed and is reachable testing commit cb85266c6ca35df0d4d5663e8aed02e1be09954c gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 80973faabee0028f3492a23c87896963968cdc54aa79f4fdd10110dd2f5e1e3a all runs: OK false negative chance: 0.000 # git bisect bad cb85266c6ca35df0d4d5663e8aed02e1be09954c Bisecting: 273 revisions left to test after this (roughly 8 steps) [6c390ef198aa69795427a5cb5fd7cb4bc7e6cd7a] xdp: fix invalid wait context of page_pool_destroy() determine whether the revision contains the guilty commit revision 0be237b6b75346202a3cc0b0987dc814ab5be047 crashed and is reachable testing commit 6c390ef198aa69795427a5cb5fd7cb4bc7e6cd7a gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: dc731c6471aa19002e1ebc8df6e7303d82cb788fe74d26e5ef8c508b0d3e54d0 all runs: crashed: WARNING in skb_checksum_help representative crash: WARNING in skb_checksum_help, types: [WARNING] # git bisect good 6c390ef198aa69795427a5cb5fd7cb4bc7e6cd7a Bisecting: 136 revisions left to test after this (roughly 7 steps) [b0302ffc74123b6a99d7d1896fcd9b2e4072d9ce] scsi: qla2xxx: Fix for possible memory corruption determine whether the revision contains the guilty commit revision d7af3e5ba454d007b4939f858739cf1cecdeab46 crashed and is reachable testing commit b0302ffc74123b6a99d7d1896fcd9b2e4072d9ce gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d254b781cd9d4d6f623cf9547b8264fd9ea2c9eb8e0abe458607d2864ed1395a all runs: OK false negative chance: 0.000 # git bisect bad b0302ffc74123b6a99d7d1896fcd9b2e4072d9ce Bisecting: 68 revisions left to test after this (roughly 6 steps) [b5aa7fe19c4599e7f913b4e924aa1991f6e13df6] pinctrl: core: fix possible memory leak when pinctrl_enable() fails determine whether the revision contains the guilty commit revision caee6db7e811ac0c532dc3c0cb815af56162d7a7 crashed and is reachable testing commit b5aa7fe19c4599e7f913b4e924aa1991f6e13df6 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 69c1d008b800b37d5f2c05156132fcb4806d9d76aa3f6f73a17af392faa8702c all runs: OK false negative chance: 0.000 # git bisect bad b5aa7fe19c4599e7f913b4e924aa1991f6e13df6 Bisecting: 33 revisions left to test after this (roughly 5 steps) [cfbd43e37bf1f180337836cf53e386365eb41ffc] clk: qcom: branch: Add helper functions for setting retain bits determine whether the revision contains the guilty commit revision 6c390ef198aa69795427a5cb5fd7cb4bc7e6cd7a crashed and is reachable testing commit cfbd43e37bf1f180337836cf53e386365eb41ffc gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c51a4855b3e0ae194d96fbabf4f6202f61c6e471dd2911f06ef165bce88efe39 all runs: crashed: WARNING in skb_checksum_help representative crash: WARNING in skb_checksum_help, types: [WARNING] # git bisect good cfbd43e37bf1f180337836cf53e386365eb41ffc Bisecting: 16 revisions left to test after this (roughly 4 steps) [1b83f8967b6b65d044dfac2f893374ec74b094b6] powerpc/xmon: Fix disassembly CPU feature checks determine whether the revision contains the guilty commit revision caee6db7e811ac0c532dc3c0cb815af56162d7a7 crashed and is reachable testing commit 1b83f8967b6b65d044dfac2f893374ec74b094b6 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 0e8d8f8ef8f1996d96bf6088cd7ee828ec323412bcf2f683be2350039068c1d5 all runs: OK false negative chance: 0.000 # git bisect bad 1b83f8967b6b65d044dfac2f893374ec74b094b6 Bisecting: 8 revisions left to test after this (roughly 3 steps) [1e3829f6e01f8f882d29739c74a03ed696e78231] RDMA/rxe: Don't set BTH_ACK_MASK for UC or UD QPs determine whether the revision contains the guilty commit revision caee6db7e811ac0c532dc3c0cb815af56162d7a7 crashed and is reachable testing commit 1e3829f6e01f8f882d29739c74a03ed696e78231 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 4c1f923363a4ed81fcb4d3e5e25b49a0f9419ab26b1e10b88727d8dd09b44895 all runs: crashed: WARNING in skb_checksum_help representative crash: WARNING in skb_checksum_help, types: [WARNING] # git bisect good 1e3829f6e01f8f882d29739c74a03ed696e78231 Bisecting: 4 revisions left to test after this (roughly 2 steps) [a32c9d72025db7d95678bb9c1fc7a9c4419003d0] Input: elan_i2c - do not leave interrupt disabled on suspend failure determine whether the revision contains the guilty commit revision cfbd43e37bf1f180337836cf53e386365eb41ffc crashed and is reachable testing commit a32c9d72025db7d95678bb9c1fc7a9c4419003d0 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 68a90da148d2071f870df4f7a28f90141583234d779ceb91eca7392cf00af1f4 all runs: crashed: WARNING in skb_checksum_help representative crash: WARNING in skb_checksum_help, types: [WARNING] # git bisect good a32c9d72025db7d95678bb9c1fc7a9c4419003d0 Bisecting: 2 revisions left to test after this (roughly 1 step) [ea558f10fb05a6503c6e655a1b7d81fdf8e5924c] vhost/vsock: always initialize seqpacket_allow determine whether the revision contains the guilty commit revision caee6db7e811ac0c532dc3c0cb815af56162d7a7 crashed and is reachable testing commit ea558f10fb05a6503c6e655a1b7d81fdf8e5924c gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 041e9cdb1ec67b462dc78198a5225913be0e94f01ab77a9d2c9c5115358b137f all runs: crashed: WARNING in skb_checksum_help representative crash: WARNING in skb_checksum_help, types: [WARNING] # git bisect good ea558f10fb05a6503c6e655a1b7d81fdf8e5924c Bisecting: 0 revisions left to test after this (roughly 1 step) [a679094b1c49fb2f0122db595dbb8602681d385a] MIPS: Octeron: remove source file executable bit determine whether the revision contains the guilty commit revision caee6db7e811ac0c532dc3c0cb815af56162d7a7 crashed and is reachable testing commit a679094b1c49fb2f0122db595dbb8602681d385a gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 0e8d8f8ef8f1996d96bf6088cd7ee828ec323412bcf2f683be2350039068c1d5 all runs: OK false negative chance: 0.000 # git bisect bad a679094b1c49fb2f0122db595dbb8602681d385a Bisecting: 0 revisions left to test after this (roughly 0 steps) [27874ca77bd2b05a3779c7b3a5c75d8dd7f0b40f] net: missing check virtio determine whether the revision contains the guilty commit revision 1e3829f6e01f8f882d29739c74a03ed696e78231 crashed and is reachable testing commit 27874ca77bd2b05a3779c7b3a5c75d8dd7f0b40f gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 0e8d8f8ef8f1996d96bf6088cd7ee828ec323412bcf2f683be2350039068c1d5 all runs: OK false negative chance: 0.000 # git bisect bad 27874ca77bd2b05a3779c7b3a5c75d8dd7f0b40f 27874ca77bd2b05a3779c7b3a5c75d8dd7f0b40f is the first bad commit commit 27874ca77bd2b05a3779c7b3a5c75d8dd7f0b40f Author: Denis Arefev Date: Thu Jun 13 12:54:48 2024 +0300 net: missing check virtio [ Upstream commit e269d79c7d35aa3808b1f3c1737d63dab504ddc8 ] Two missing check in virtio_net_hdr_to_skb() allowed syzbot to crash kernels again 1. After the skb_segment function the buffer may become non-linear (nr_frags != 0), but since the SKBTX_SHARED_FRAG flag is not set anywhere the __skb_linearize function will not be executed, then the buffer will remain non-linear. Then the condition (offset >= skb_headlen(skb)) becomes true, which causes WARN_ON_ONCE in skb_checksum_help. 2. The struct sk_buff and struct virtio_net_hdr members must be mathematically related. (gso_size) must be greater than (needed) otherwise WARN_ON_ONCE. (remainder) must be greater than (needed) otherwise WARN_ON_ONCE. (remainder) may be 0 if division is without remainder. offset+2 (4191) > skb_headlen() (1116) WARNING: CPU: 1 PID: 5084 at net/core/dev.c:3303 skb_checksum_help+0x5e2/0x740 net/core/dev.c:3303 Modules linked in: CPU: 1 PID: 5084 Comm: syz-executor336 Not tainted 6.7.0-rc3-syzkaller-00014-gdf60cee26a2e #0 Hardware name: Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 RIP: 0010:skb_checksum_help+0x5e2/0x740 net/core/dev.c:3303 Code: 89 e8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 52 01 00 00 44 89 e2 2b 53 74 4c 89 ee 48 c7 c7 40 57 e9 8b e8 af 8f dd f8 90 <0f> 0b 90 90 e9 87 fe ff ff e8 40 0f 6e f9 e9 4b fa ff ff 48 89 ef RSP: 0018:ffffc90003a9f338 EFLAGS: 00010286 RAX: 0000000000000000 RBX: ffff888025125780 RCX: ffffffff814db209 RDX: ffff888015393b80 RSI: ffffffff814db216 RDI: 0000000000000001 RBP: ffff8880251257f4 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: 000000000000045c R13: 000000000000105f R14: ffff8880251257f0 R15: 000000000000105d FS: 0000555555c24380(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000002000f000 CR3: 0000000023151000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ip_do_fragment+0xa1b/0x18b0 net/ipv4/ip_output.c:777 ip_fragment.constprop.0+0x161/0x230 net/ipv4/ip_output.c:584 ip_finish_output_gso net/ipv4/ip_output.c:286 [inline] __ip_finish_output net/ipv4/ip_output.c:308 [inline] __ip_finish_output+0x49c/0x650 net/ipv4/ip_output.c:295 ip_finish_output+0x31/0x310 net/ipv4/ip_output.c:323 NF_HOOK_COND include/linux/netfilter.h:303 [inline] ip_output+0x13b/0x2a0 net/ipv4/ip_output.c:433 dst_output include/net/dst.h:451 [inline] ip_local_out+0xaf/0x1a0 net/ipv4/ip_output.c:129 iptunnel_xmit+0x5b4/0x9b0 net/ipv4/ip_tunnel_core.c:82 ipip6_tunnel_xmit net/ipv6/sit.c:1034 [inline] sit_tunnel_xmit+0xed2/0x28f0 net/ipv6/sit.c:1076 __netdev_start_xmit include/linux/netdevice.h:4940 [inline] netdev_start_xmit include/linux/netdevice.h:4954 [inline] xmit_one net/core/dev.c:3545 [inline] dev_hard_start_xmit+0x13d/0x6d0 net/core/dev.c:3561 __dev_queue_xmit+0x7c1/0x3d60 net/core/dev.c:4346 dev_queue_xmit include/linux/netdevice.h:3134 [inline] packet_xmit+0x257/0x380 net/packet/af_packet.c:276 packet_snd net/packet/af_packet.c:3087 [inline] packet_sendmsg+0x24ca/0x5240 net/packet/af_packet.c:3119 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0xd5/0x180 net/socket.c:745 __sys_sendto+0x255/0x340 net/socket.c:2190 __do_sys_sendto net/socket.c:2202 [inline] __se_sys_sendto net/socket.c:2198 [inline] __x64_sys_sendto+0xe0/0x1b0 net/socket.c:2198 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x40/0x110 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x63/0x6b Found by Linux Verification Center (linuxtesting.org) with Syzkaller Fixes: 0f6925b3e8da ("virtio_net: Do not pull payload in skb->head") Signed-off-by: Denis Arefev Message-Id: <20240613095448.27118-1-arefev@swemel.ru> Signed-off-by: Michael S. Tsirkin Signed-off-by: Sasha Levin include/linux/virtio_net.h | 11 +++++++++++ 1 file changed, 11 insertions(+) accumulated error probability: 0.00 culprit signature: 0e8d8f8ef8f1996d96bf6088cd7ee828ec323412bcf2f683be2350039068c1d5 parent signature: 041e9cdb1ec67b462dc78198a5225913be0e94f01ab77a9d2c9c5115358b137f revisions tested: 22, total time: 6h29m9.530879082s (build: 3h5m18.502847891s, test: 3h17m57.765061713s) first good commit: 27874ca77bd2b05a3779c7b3a5c75d8dd7f0b40f net: missing check virtio recipients (to): ["arefev@swemel.ru" "mst@redhat.com" "sashal@kernel.org"] recipients (cc): []