ci starts bisection 2024-07-14 00:09:25.467812709 +0000 UTC m=+171521.404212964 bisecting cause commit starting from 80ab5445da623540ea6303740015dd0210a06dc8 building syzkaller on eaeb5c15ad704753a93bc8f8c7fc422d2a189581 ensuring issue is reproducible on original commit 80ab5445da623540ea6303740015dd0210a06dc8 testing commit 80ab5445da623540ea6303740015dd0210a06dc8 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d342f8d2ef74c57af5dcc19fcaed9c66ab8a0cbf76ef634a3e967a7dbab89776 all runs: crashed: WARNING in skb_warn_bad_offload representative crash: WARNING in skb_warn_bad_offload, types: [WARNING] check whether we can drop unnecessary instrumentation disabling configs for [HANG LEAK UBSAN KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit 80ab5445da623540ea6303740015dd0210a06dc8 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ab134f0c8047f1b028b5c9dedc4d7d4d45eb18fafd551bf1c9b2c784629e89e3 all runs: crashed: WARNING in skb_warn_bad_offload representative crash: WARNING in skb_warn_bad_offload, types: [WARNING] the bug reproduces without the instrumentation disabling configs for [HANG LEAK UBSAN KASAN LOCKDEP ATOMIC_SLEEP], they are not needed kconfig minimization: base=4001 full=8042 leaves diff=2004 split chunks (needed=false): <2004> split chunk #0 of len 2004 into 5 parts testing without sub-chunk 1/5 disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed testing commit 80ab5445da623540ea6303740015dd0210a06dc8 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: cd53d6f927059aec2fc95300fff71f67ca2b3fa296b77d4e169afdc3ee569e8c all runs: crashed: WARNING in skb_warn_bad_offload representative crash: WARNING in skb_warn_bad_offload, types: [WARNING] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [HANG LEAK UBSAN KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit 80ab5445da623540ea6303740015dd0210a06dc8 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 647fb1eae35a8f6d9f7011c803402493a6a188de143f0e73e49e07652f4de9b9 run #0: infra problem: failed to get create instance operation operation-1720925286424-61d2c2461e03e-c46b29e3-ba2959c2: Get "https://compute.googleapis.com/compute/v1/projects/syzkaller/zones/us-central1-c/operations/operation-1720925286424-61d2c2461e03e-c46b29e3-ba2959c2?alt=json&prettyPrint=false": read tcp 10.128.0.169:33404->173.194.194.95:443: read: connection reset by peer run #1: crashed: WARNING in skb_warn_bad_offload run #2: crashed: WARNING in skb_warn_bad_offload run #3: crashed: WARNING in skb_warn_bad_offload run #4: crashed: WARNING in skb_warn_bad_offload run #5: crashed: WARNING in skb_warn_bad_offload run #6: crashed: WARNING in skb_warn_bad_offload run #7: crashed: WARNING in skb_warn_bad_offload run #8: crashed: WARNING in skb_warn_bad_offload run #9: crashed: WARNING in skb_warn_bad_offload representative crash: WARNING in skb_warn_bad_offload, types: [WARNING] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [UBSAN KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed testing commit 80ab5445da623540ea6303740015dd0210a06dc8 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: cd8452dbddd932be9a6d4b8a15d65cf32cb9c9ee63e283711df965196a93bbfa all runs: crashed: WARNING in skb_warn_bad_offload representative crash: WARNING in skb_warn_bad_offload, types: [WARNING] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed testing commit 80ab5445da623540ea6303740015dd0210a06dc8 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: db8d2b69e561722ebcff31b588783715d27027143b09431b8fa52b18d7ab8772 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 80ab5445da623540ea6303740015dd0210a06dc8 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: fbd98229d1ab7d49b35ed92d08cc7b7890d3fd7e23bfd226e073311d27e58390 all runs: OK false negative chance: 0.000 minimized to 801 configs; suspects: [AF_RXRPC ARCH_ENABLE_MEMORY_HOTREMOVE ATM AX25 BCMA BLK_DEV_ZONED BPF_SYSCALL CARDBUS CFG80211 CFG80211_WEXT CMA COMMON_CLK CONTIG_ALLOC CRYPTO_842 CRYPTO_LZ4 CRYPTO_LZ4HC CRYPTO_ZSTD DAX DLM DVB_CORE ENCRYPTED_KEYS EXTCON FB GENEVE GPIOLIB HAMRADIO HAVE_CLK 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 IOMMUFD IP_SCTP IRQ_REMAP KVM KVM_INTEL L2TP 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_HOTREMOVE MFD_DLN2 MFD_RETU MFD_VIPERBOARD MMC MTD MTD_UBI NETFILTER_CONNCOUNT NET_IPGRE NET_IPGRE_DEMUX NFS_V4_1 NF_TPROXY_IPV4 NF_TPROXY_IPV6 NILFS2_FS 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 NOP_USB_XCEIV 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 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_POOL 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 PM_CLK PNFS_BLOCK PNFS_FILE_LAYOUT PNFS_FLEXFILE_LAYOUT PPP PPPOATM PPPOE PPPOE_HASH_BITS_4 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 R8712U RADIO_ADAPTERS RADIO_SHARK RADIO_SHARK2 RADIO_SI470X RADIO_SI4713 RADIO_TEA575X RAID6_PQ RAID_ATTRS RC_ATI_REMOTE RC_CORE RC_DEVICES 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_TWL4030 REISERFS_FS REISERFS_FS_POSIX_ACL REISERFS_FS_SECURITY REISERFS_FS_XATTR REISERFS_PROC_INFO RESET_CONTROLLER RFKILL RFKILL_INPUT RFKILL_LEDS RMI4_2D_SENSOR RMI4_CORE RMI4_F03 RMI4_F03_SERIO RMI4_F11 RMI4_F12 RMI4_F30 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 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 SMC SMC_DIAG SMSC_PHY 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 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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_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_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 USERFAULTFD USERIO USERMODE_DRIVER USER_RETURN_NOTIFIER UVC_COMMON U_SERIAL_CONSOLE V4L2_MEM2MEM_DEV V4L_TEST_DRIVERS VALIDATE_FS_PARSER VDPA VDPA_SIM VDPA_SIM_BLOCK VDPA_SIM_NET VDPA_USER VETH VFIO VFIO_DEVICE_CDEV 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_TASK VHOST_VDPA VHOST_VSOCK VIDEO VIDEOBUF2_CORE VIDEOBUF2_DMA_CONTIG VIDEOBUF2_DMA_SG VIDEOBUF2_MEMOPS VIDEOBUF2_V4L2 VIDEOBUF2_VMALLOC VIDEOMODE_HELPERS VIDEO_AU0828 VIDEO_AU0828_RC VIDEO_AU0828_V4L2 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_TUNER VIDEO_TVEEPROM VIDEO_USBTV 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 WLAN_VENDOR_PURELIFI WLAN_VENDOR_SILABS X86_SGX X86_SGX_KVM X86_USER_SHADOW_STACK X86_X2APIC X86_X32_ABI 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 XOR_BLOCKS YENTA YENTA_ENE_TUNE YENTA_O2 YENTA_RICOH YENTA_TI YENTA_TOSHIBA ZEROPLUS_FF ZLIB_DEFLATE ZONEFS_FS ZONE_DEVICE ZPOOL ZRAM ZRAM_DEF_COMP_LZORLE ZSMALLOC ZSTD_COMPRESS ZSWAP ZSWAP_COMPRESSOR_DEFAULT_LZO ZSWAP_DEFAULT_ON ZSWAP_SHRINKER_DEFAULT_ON ZSWAP_ZPOOL_DEFAULT_ZSMALLOC] disabling configs for [HANG LEAK UBSAN KASAN LOCKDEP ATOMIC_SLEEP], they are not needed picked [v6.9 v6.8 v6.7 v6.5 v6.3 v6.1 v5.19 v5.17 v5.14 v5.11 v5.8 v5.5 v5.2 v4.20 v4.19] out of 32 release tags testing release v6.9 testing commit a38297e3fb012ddfa7ce0321a7e5a8daeb1872b6 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 8263c5e308a4ae65a3ed5d14cce80e45a5cd3e0d6d5a92e6170222cbd75bb308 all runs: OK false negative chance: 0.000 # git bisect start 80ab5445da623540ea6303740015dd0210a06dc8 a38297e3fb012ddfa7ce0321a7e5a8daeb1872b6 Bisecting: 7824 revisions left to test after this (roughly 13 steps) [6fd600d742744dc7ef7fc65ca26daa2b1163158a] Merge tag 'media/v6.10-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media testing commit 6fd600d742744dc7ef7fc65ca26daa2b1163158a gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 565c411989c30da984fcd92c1f683d74e46c08ef6a31a6b39b1c48bf10bbaceb all runs: OK false negative chance: 0.000 # git bisect good 6fd600d742744dc7ef7fc65ca26daa2b1163158a Bisecting: 3918 revisions left to test after this (roughly 12 steps) [90e823498881fb8a91d83e9a8eed87c8c3ff2176] mm/ksm: fix possible UAF of stable_node testing commit 90e823498881fb8a91d83e9a8eed87c8c3ff2176 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 789081ee2836c00c6b495a655a200fa58fe7bc6e0ab208ca986326b4d8507267 all runs: OK false negative chance: 0.000 # git bisect good 90e823498881fb8a91d83e9a8eed87c8c3ff2176 Bisecting: 1964 revisions left to test after this (roughly 11 steps) [cd17613f464e15ad0ca83de7ca79ba72e4e72f75] Merge tag 'block-6.10-20240628' of git://git.kernel.dk/linux testing commit cd17613f464e15ad0ca83de7ca79ba72e4e72f75 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 37cd588260bee1117fe6ef534eb3349d00c37b68eac3cd406c04780b4efaad26 all runs: OK false negative chance: 0.000 # git bisect good cd17613f464e15ad0ca83de7ca79ba72e4e72f75 Bisecting: 982 revisions left to test after this (roughly 10 steps) [94c97e1178d5714d2c02f73da426655adbc24937] wifi: iwlwifi: fw: api: add puncturing to PHY context docs testing commit 94c97e1178d5714d2c02f73da426655adbc24937 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: fb7904798a7fa4bbc049695157c55caccb1c851c4287904ebc3dca5463d2616c all runs: OK false negative chance: 0.000 # git bisect good 94c97e1178d5714d2c02f73da426655adbc24937 Bisecting: 495 revisions left to test after this (roughly 9 steps) [51df8e0cbaefd432f7029dde94e6c7e4e5b19465] Merge tag 'net-6.10-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net testing commit 51df8e0cbaefd432f7029dde94e6c7e4e5b19465 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b401d9aba13cb0fe00d088ef77bca18ac554f01389921f9c4b7a4cdf5ac4cabf all runs: OK false negative chance: 0.000 # git bisect good 51df8e0cbaefd432f7029dde94e6c7e4e5b19465 Bisecting: 299 revisions left to test after this (roughly 8 steps) [870a1dbcbc2ebd2114d5f18bb0bd88a7ff07540f] net: phy: microchip: lan937x: add support for 100BaseTX PHY testing commit 870a1dbcbc2ebd2114d5f18bb0bd88a7ff07540f gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c75e50b0b1d80897bd5c72f62089707a697956dae68fd65b7e1420dcf1e62d86 all runs: crashed: WARNING in skb_warn_bad_offload representative crash: WARNING in skb_warn_bad_offload, types: [WARNING] # git bisect bad 870a1dbcbc2ebd2114d5f18bb0bd88a7ff07540f Bisecting: 93 revisions left to test after this (roughly 7 steps) [1eea11e937db67b5417934974e825c7101324b23] Merge tag 'linux-can-next-for-6.11-20240629' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can-next testing commit 1eea11e937db67b5417934974e825c7101324b23 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 3ed8b92bd32c4bf885db8cdd5045b70f8607609f35f732004dbbf02a20d6c45d all runs: crashed: WARNING in skb_warn_bad_offload representative crash: WARNING in skb_warn_bad_offload, types: [WARNING] # git bisect bad 1eea11e937db67b5417934974e825c7101324b23 Bisecting: 55 revisions left to test after this (roughly 6 steps) [a051091cc3154be7dc533771070e90736654a1aa] Merge branch 'tcp_metrics-netlink-specs' into main testing commit a051091cc3154be7dc533771070e90736654a1aa gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: e32be4fa73b1a12d01776e5731e17df456eb7d8ee7b04afd2974169de674939d all runs: crashed: WARNING in skb_warn_bad_offload representative crash: WARNING in skb_warn_bad_offload, types: [WARNING] # git bisect bad a051091cc3154be7dc533771070e90736654a1aa Bisecting: 22 revisions left to test after this (roughly 5 steps) [098ba97d0e895c204de95f933bfbfad9344206a5] selftests: mlxsw: mirror_gre: Obey TESTS testing commit 098ba97d0e895c204de95f933bfbfad9344206a5 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 5bf62bae84d1f2b4dd5a62ab7591c837cac6f112a5d3e4c7c2cb988b89a69723 all runs: OK false negative chance: 0.000 # git bisect good 098ba97d0e895c204de95f933bfbfad9344206a5 Bisecting: 11 revisions left to test after this (roughly 4 steps) [6ad2962f8adfd53fca52dce7f830783e95d99ce7] net: ethtool: attach an XArray of custom RSS contexts to a netdevice testing commit 6ad2962f8adfd53fca52dce7f830783e95d99ce7 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 66d146558da746b97c12d035064f5cea2489c7d5eaba877e745899c46cb7d93c all runs: crashed: WARNING in skb_warn_bad_offload representative crash: WARNING in skb_warn_bad_offload, types: [WARNING] # git bisect bad 6ad2962f8adfd53fca52dce7f830783e95d99ce7 Bisecting: 5 revisions left to test after this (roughly 3 steps) [bf7bb7b43097d8c2b8673c5ea8a6b64a1f6090b0] enic: add ethtool get_channel support testing commit bf7bb7b43097d8c2b8673c5ea8a6b64a1f6090b0 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b4325843d15924705c50790e80e3a70790aba5c725d7dfaae135f857ab90e761 all runs: crashed: WARNING in skb_warn_bad_offload representative crash: WARNING in skb_warn_bad_offload, types: [WARNING] # git bisect bad bf7bb7b43097d8c2b8673c5ea8a6b64a1f6090b0 Bisecting: 2 revisions left to test after this (roughly 1 step) [10154dbded6d6a2fecaebdfda206609de0f121a9] udp: Allow GSO transmit from devices with no checksum offload testing commit 10154dbded6d6a2fecaebdfda206609de0f121a9 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a09ab3173902dd51fccceb6c355db0dfe7889be9101e7537cb1bd3b81a82e978 all runs: crashed: WARNING in skb_warn_bad_offload representative crash: WARNING in skb_warn_bad_offload, types: [WARNING] # git bisect bad 10154dbded6d6a2fecaebdfda206609de0f121a9 Bisecting: 0 revisions left to test after this (roughly 0 steps) [748e3bbf47212d5e2e22d731328b0c15ee3b85ae] Merge branch 'net-selftests-mirroring-cleanup' into main testing commit 748e3bbf47212d5e2e22d731328b0c15ee3b85ae gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 4434682cf3fa0101d714b4fa14b311ac1e56d93abf4a2b2ee375378dc088e1a7 all runs: OK false negative chance: 0.000 # git bisect good 748e3bbf47212d5e2e22d731328b0c15ee3b85ae 10154dbded6d6a2fecaebdfda206609de0f121a9 is the first bad commit commit 10154dbded6d6a2fecaebdfda206609de0f121a9 Author: Jakub Sitnicki Date: Wed Jun 26 19:51:26 2024 +0200 udp: Allow GSO transmit from devices with no checksum offload Today sending a UDP GSO packet from a TUN device results in an EIO error: import fcntl, os, struct from socket import * TUNSETIFF = 0x400454CA IFF_TUN = 0x0001 IFF_NO_PI = 0x1000 UDP_SEGMENT = 103 tun_fd = os.open("/dev/net/tun", os.O_RDWR) ifr = struct.pack("16sH", b"tun0", IFF_TUN | IFF_NO_PI) fcntl.ioctl(tun_fd, TUNSETIFF, ifr) os.system("ip addr add 192.0.2.1/24 dev tun0") os.system("ip link set dev tun0 up") s = socket(AF_INET, SOCK_DGRAM) s.setsockopt(SOL_UDP, UDP_SEGMENT, 1200) s.sendto(b"x" * 3000, ("192.0.2.2", 9)) # EIO This is due to a check in the udp stack if the egress device offers checksum offload. While TUN/TAP devices, by default, don't advertise this capability because it requires support from the TUN/TAP reader. However, the GSO stack has a software fallback for checksum calculation, which we can use. This way we don't force UDP_SEGMENT users to handle the EIO error and implement a segmentation fallback. Lift the restriction so that UDP_SEGMENT can be used with any egress device. We also need to adjust the UDP GSO code to match the GSO stack expectation about ip_summed field, as set in commit 8d63bee643f1 ("net: avoid skb_warn_bad_offload false positives on UFO"). Otherwise we will hit the bad offload check. Users should, however, expect a potential performance impact when batch-sending packets with UDP_SEGMENT without checksum offload on the egress device. In such case the packet payload is read twice: first during the sendmsg syscall when copying data from user memory, and then in the GSO stack for checksum computation. This double memory read can be less efficient than a regular sendmsg where the checksum is calculated during the initial data copy from user memory. Signed-off-by: Jakub Sitnicki Reviewed-by: Willem de Bruijn Link: https://patch.msgid.link/20240626-linux-udpgso-v2-1-422dfcbd6b48@cloudflare.com Signed-off-by: Jakub Kicinski net/ipv4/udp.c | 3 +-- net/ipv4/udp_offload.c | 8 ++++++++ net/ipv6/udp.c | 3 +-- 3 files changed, 10 insertions(+), 4 deletions(-) accumulated error probability: 0.00 culprit signature: a09ab3173902dd51fccceb6c355db0dfe7889be9101e7537cb1bd3b81a82e978 parent signature: 4434682cf3fa0101d714b4fa14b311ac1e56d93abf4a2b2ee375378dc088e1a7 revisions tested: 21, total time: 8h47m25.575583911s (build: 3h25m24.786433589s, test: 4h6m3.662491743s) first bad commit: 10154dbded6d6a2fecaebdfda206609de0f121a9 udp: Allow GSO transmit from devices with no checksum offload recipients (to): ["jakub@cloudflare.com" "kuba@kernel.org" "willemb@google.com"] recipients (cc): [] crash: WARNING in skb_warn_bad_offload skb frag: 00000080: 62 3f 77 e4 0e 82 0d 2f 85 cc 44 ea 25 5a 99 76 skb frag: 00000090: f2 53 ------------[ cut here ]------------ wg0: caps=(0x00000106401d5829, 0x00000106401d5829) WARNING: CPU: 0 PID: 14923 at net/core/dev.c:3293 skb_warn_bad_offload+0xc1/0xe0 net/core/dev.c:3291 Modules linked in: CPU: 0 PID: 14923 Comm: syz-executor459 Not tainted 6.10.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 RIP: 0010:skb_warn_bad_offload+0xc1/0xe0 net/core/dev.c:3291 Code: ad 31 83 48 0f 44 d0 49 8b 74 24 18 48 8d 8e a0 03 00 00 48 85 f6 48 0f 44 c8 48 c7 c7 11 0c be 83 4c 89 f6 e8 50 f2 8b fe 90 <0f> 0b 90 90 5b 41 5c 41 5e 41 5f c3 cc cc cc cc 66 2e 0f 1f 84 00 RSP: 0018:ffffc90007dd3738 EFLAGS: 00010246 RAX: e2cca3e8bf233200 RBX: ffff88810c1e6000 RCX: 0000000000000202 RDX: 0000000000000002 RSI: 00000000ffffdfff RDI: 00000000ffffffff RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff83ed8b30 R10: ffffc90007dd3608 R11: ffffc90007dd35b0 R12: ffff88810c203400 R13: ffff88810c4bbc00 R14: ffff88810c1e6130 R15: ffff88810c1e6130 FS: 0000555581264380(0000) GS:ffff88813bc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020001180 CR3: 000000010c3ee000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __skb_gso_segment+0xf7/0x120 net/core/gso.c:127 skb_gso_segment include/net/gso.h:83 [inline] validate_xmit_skb+0xb8/0x330 net/core/dev.c:3661 __dev_queue_xmit+0x622/0xf60 net/core/dev.c:4415 dev_queue_xmit include/linux/netdevice.h:3102 [inline] neigh_connected_output+0x16d/0x1d0 net/core/neighbour.c:1594 neigh_output include/net/neighbour.h:542 [inline] ip6_finish_output2+0x47f/0x6a0 net/ipv6/ip6_output.c:137 NF_HOOK_COND include/linux/netfilter.h:303 [inline] ip6_output+0xb1/0x1c0 net/ipv6/ip6_output.c:243 ip6_send_skb+0x3f/0xa0 net/ipv6/ip6_output.c:1958 udp_v6_send_skb+0x316/0x580 net/ipv6/udp.c:1293 udpv6_sendmsg+0xb18/0xbb0 net/ipv6/udp.c:1589 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0x3b/0xb0 net/socket.c:745 ____sys_sendmsg+0x17a/0x200 net/socket.c:2585 ___sys_sendmsg net/socket.c:2639 [inline] __sys_sendmmsg+0x389/0x680 net/socket.c:2725 __do_sys_sendmmsg net/socket.c:2754 [inline] __se_sys_sendmmsg net/socket.c:2751 [inline] __x64_sys_sendmmsg+0x1e/0x30 net/socket.c:2751 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xe0/0x220 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fb716679e89 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 1a 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffda8924aa8 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fb716679e89 RDX: 0000000000000001 RSI: 0000000020003cc0 RDI: 0000000000000003 RBP: 00000000000f4240 R08: 0000000000000000 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffda8924b00 R13: 00007fb7166c7406 R14: 0000000000000003 R15: 00007ffda8924ae0