ci2 starts bisection 2023-10-08 08:57:02.153512431 +0000 UTC m=+100609.433273045 bisecting fixing commit since 1cc3fcf63192dfbf5ac13bc6134ae9120ebdcba6 building syzkaller on 5205ef306e8b4217fc49cb8d8bd18670b7d08c3c ensuring issue is reproducible on original commit 1cc3fcf63192dfbf5ac13bc6134ae9120ebdcba6 testing commit 1cc3fcf63192dfbf5ac13bc6134ae9120ebdcba6 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 86e9eed17e3b2d58409ed3797131e1979771a25be2474fb0d12f0a1223fa52ec all runs: crashed: WARNING in bpf_xdp_adjust_tail representative crash: WARNING in bpf_xdp_adjust_tail, 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 1cc3fcf63192dfbf5ac13bc6134ae9120ebdcba6 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a28d780cc00d7359640556272dce29f128783f16b17d8cedf428165c3e98b044 all runs: crashed: WARNING in bpf_xdp_adjust_tail representative crash: WARNING in bpf_xdp_adjust_tail, types: [WARNING] the bug reproduces without the instrumentation disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed kconfig minimization: base=3820 full=7521 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 [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN KASAN], they are not needed testing commit 1cc3fcf63192dfbf5ac13bc6134ae9120ebdcba6 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 292297c04c308c2159b60a785a495c961537631d07ad8b24fc19eb9d97753da6 all runs: crashed: WARNING in bpf_xdp_adjust_tail representative crash: WARNING in bpf_xdp_adjust_tail, 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 1cc3fcf63192dfbf5ac13bc6134ae9120ebdcba6 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d9dd61324b50c740a13cda340e413f23e61a7eef287833d0446b71dd9d2d3eed all runs: crashed: WARNING in bpf_xdp_adjust_tail representative crash: WARNING in bpf_xdp_adjust_tail, types: [WARNING] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [HANG LEAK UBSAN KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit 1cc3fcf63192dfbf5ac13bc6134ae9120ebdcba6 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 970260b6e34aca178f1863ee271b6e42c48446d77e1d2473b635e9b57bb2cd3d all runs: crashed: WARNING in bpf_xdp_adjust_tail representative crash: WARNING in bpf_xdp_adjust_tail, types: [WARNING] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [LEAK UBSAN KASAN LOCKDEP ATOMIC_SLEEP HANG], they are not needed testing commit 1cc3fcf63192dfbf5ac13bc6134ae9120ebdcba6 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 864e2d389d13c2aa365bcec8d7b356540eed5bbe3869839de04e6e10bfb1c1a0 all runs: crashed: WARNING in bpf_xdp_adjust_tail representative crash: WARNING in bpf_xdp_adjust_tail, types: [WARNING] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed testing commit 1cc3fcf63192dfbf5ac13bc6134ae9120ebdcba6 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 2fce0444a5bb42c5dfaf3516cb46a4a3cba11379d52129d8f7a6c70c1832204b all runs: OK false negative chance: 0.000 minimized to 395 configs; suspects: [ARCH_ENABLE_MEMORY_HOTREMOVE ATM BCMA BLK_DEV_ZONED BPF_SYSCALL CARDBUS CFG80211 CFG80211_WEXT CMA COMMON_CLK CONTIG_ALLOC CRYPTO_842 CRYPTO_LZ4 CRYPTO_LZ4HC CRYPTO_LZO CRYPTO_ZSTD DVB_CORE EXTCON FB GPIOLIB HID_ZEROPLUS I2C_MUX IIO KVM KVM_INTEL LIBNVDIMM MEDIA_ANALOG_TV_SUPPORT MEDIA_CAMERA_SUPPORT MEDIA_CEC_SUPPORT 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_VIPERBOARD PARPORT PCCARD PCMCIA PHONET RADIO_ADAPTERS RADIO_SI470X RADIO_SI4713 RC_CORE RFKILL SND SOUND SPI SSB TAP TUN USB_AMD5536UDC USB_ATM USB_CONFIGFS USB_CONFIGFS_F_UAC1 USB_CONFIGFS_F_UAC1_LEGACY USB_CONFIGFS_F_UAC2 USB_CONFIGFS_F_UVC USB_CONFIGFS_MASS_STORAGE USB_CONFIGFS_NCM USB_CONFIGFS_OBEX USB_CONFIGFS_PHONET USB_CONFIGFS_RNDIS USB_CONFIGFS_SERIAL USB_CXACRU USB_CYPRESS_CY7C63 USB_CYTHERM USB_DSBR USB_DUMMY_HCD USB_DWC2 USB_DWC2_HOST USB_DWC2_PCI USB_DWC3 USB_DWC3_GADGET USB_DWC3_OF_SIMPLE USB_DWC3_PCI USB_DWC3_ULPI USB_DYNAMIC_MINORS USB_EG20T USB_EHCI_HCD_PLATFORM USB_EHCI_ROOT_HUB_TT USB_EHSET_TEST_FIXTURE USB_EMI26 USB_EMI62 USB_EPSON2888 USB_EZUSB_FX2 USB_FEW_INIT_RETRIES USB_FOTG210_HCD USB_FOTG210_UDC USB_FTDI_ELAN USB_F_ACM USB_F_ECM USB_F_EEM USB_F_FS USB_F_HID USB_F_MASS_STORAGE USB_F_MIDI USB_F_NCM USB_F_OBEX USB_F_PHONET USB_F_PRINTER USB_F_RNDIS USB_F_SERIAL USB_F_SS_LB USB_F_SUBSET USB_F_TCM USB_F_UAC1 USB_F_UAC1_LEGACY USB_F_UAC2 USB_F_UVC USB_GADGET USB_GADGETFS USB_GADGET_DEBUG_FILES USB_GADGET_DEBUG_FS USB_GL860 USB_GOKU USB_GPIO_VBUS USB_GR_UDC USB_GSPCA USB_GSPCA_BENQ USB_GSPCA_CONEX USB_GSPCA_CPIA1 USB_GSPCA_DTCS033 USB_GSPCA_ETOMS USB_GSPCA_FINEPIX USB_GSPCA_JEILINJ USB_GSPCA_JL2005BCD USB_GSPCA_KINECT USB_GSPCA_KONICA USB_GSPCA_MARS USB_GSPCA_MR97310A USB_GSPCA_NW80X USB_GSPCA_OV519 USB_GSPCA_OV534 USB_GSPCA_OV534_9 USB_GSPCA_PAC207 USB_GSPCA_PAC7302 USB_GSPCA_PAC7311 USB_GSPCA_SE401 USB_GSPCA_SN9C2028 USB_GSPCA_SN9C20X USB_GSPCA_SONIXB USB_GSPCA_SONIXJ USB_GSPCA_SPCA1528 USB_GSPCA_SPCA500 USB_GSPCA_SPCA501 USB_GSPCA_SPCA505 USB_GSPCA_SPCA506 USB_GSPCA_SPCA508 USB_GSPCA_SPCA561 USB_GSPCA_SQ905 USB_GSPCA_SQ905C USB_GSPCA_SQ930X USB_GSPCA_STK014 USB_GSPCA_STK1135 USB_GSPCA_STV0680 USB_GSPCA_SUNPLUS USB_GSPCA_T613 USB_GSPCA_TOPRO USB_GSPCA_TOUPTEK USB_GSPCA_TV8532 USB_GSPCA_VC032X USB_GSPCA_VICAM USB_GSPCA_XIRLINK_CIT USB_GSPCA_ZC3XX USB_HACKRF USB_HCD_BCMA USB_HCD_SSB USB_HSIC_USB3503 USB_HSIC_USB4604 USB_HSO USB_HUB_USB251XB USB_IDMOUSE USB_IOWARRIOR USB_IPHETH USB_ISIGHTFW USB_ISP116X_HCD USB_ISP1301 USB_ISP1760 USB_ISP1760_DUAL_ROLE USB_ISP1760_HCD USB_ISP1761_UDC USB_KAWETH USB_KC2190 USB_KEENE USB_LAN78XX USB_LCD USB_LD USB_LEDS_TRIGGER_USBPORT USB_LED_TRIG USB_LEGOTOWER USB_LIBCOMPOSITE USB_LINK_LAYER_TEST USB_M5602 USB_MA901 USB_MAX3421_HCD USB_MDC800 USB_MICROTEK USB_MR800 USB_MSI2500 USB_MUSB_DUAL_ROLE USB_MUSB_HDRC USB_MV_U3D USB_MV_UDC USB_NET2272 USB_NET2272_DMA USB_NET2280 USB_NET_AX88179_178A USB_NET_AX8817X USB_NET_CDCETHER USB_NET_CDC_EEM USB_NET_CDC_MBIM USB_NET_CDC_NCM USB_NET_CDC_SUBSET USB_NET_CDC_SUBSET_ENABLE USB_NET_CH9200 USB_NET_CX82310_ETH USB_NET_DM9601 USB_NET_GL620A USB_NET_HUAWEI_CDC_NCM USB_NET_INT51X1 USB_NET_KALMIA USB_NET_MCS7830 USB_NET_NET1080 USB_NET_PLUSB USB_NET_QMI_WWAN USB_NET_RNDIS_HOST USB_NET_RNDIS_WLAN USB_NET_SMSC75XX USB_NET_SMSC95XX USB_NET_SR9700 USB_NET_SR9800 USB_NET_ZAURUS USB_OHCI_HCD_PLATFORM USB_OTG USB_OTG_FSM USB_OXU210HP_HCD USB_PEGASUS USB_PULSE8_CEC USB_PWC USB_PWC_INPUT_EVDEV USB_PXA27X USB_R8A66597 USB_R8A66597_HCD USB_RAINSHADOW_CEC USB_RAREMONO USB_RAW_GADGET USB_RTL8150 USB_RTL8152 USB_RTL8153_ECM USB_S2255 USB_SERIAL USB_SERIAL_AIRCABLE USB_SERIAL_ARK3116 USB_SERIAL_BELKIN USB_SERIAL_CH341 USB_SERIAL_CONSOLE USB_SERIAL_CP210X USB_SERIAL_CYBERJACK USB_SERIAL_CYPRESS_M8 USB_SERIAL_DEBUG USB_SERIAL_DIGI_ACCELEPORT USB_SERIAL_EDGEPORT 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_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_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 USERFAULTFD USERIO USERMODE_DRIVER USER_RETURN_NOTIFIER 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_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 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_STK1160_COMMON 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 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_X2APIC X86_X32_ABI 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 ZLIB_DEFLATE ZONEFS_FS ZPOOL ZRAM ZRAM_DEF_COMP_LZORLE ZSMALLOC ZSTD_COMPRESS ZSWAP ZSWAP_COMPRESSOR_DEFAULT_LZO ZSWAP_ZPOOL_DEFAULT_ZBUD] disabling configs for [LEAK UBSAN KASAN LOCKDEP ATOMIC_SLEEP HANG], they are not needed testing current HEAD ecda77b46871007ab0e6c671fe9df5795dd8154a testing commit ecda77b46871007ab0e6c671fe9df5795dd8154a gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 5a92aab6f6cbbc898d57406753bffe99429d6d61bfd39ed669cb818ec13f7fae all runs: OK false negative chance: 0.000 # git bisect start ecda77b46871007ab0e6c671fe9df5795dd8154a 1cc3fcf63192dfbf5ac13bc6134ae9120ebdcba6 Bisecting: 3165 revisions left to test after this (roughly 12 steps) [69925a346acb70be33059f4940ed703ffe0b0756] mptcp: ensure listener is unhashed before updating the sk status determine whether the revision contains the guilty commit revision 1cc3fcf63192dfbf5ac13bc6134ae9120ebdcba6 crashed and is reachable testing commit 69925a346acb70be33059f4940ed703ffe0b0756 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 94f26e78aa454865a875adf009317adf7c99f25cccbe0bfb061e101ab709b3ea all runs: crashed: WARNING in bpf_xdp_adjust_tail representative crash: WARNING in bpf_xdp_adjust_tail, types: [WARNING] # git bisect good 69925a346acb70be33059f4940ed703ffe0b0756 Bisecting: 1583 revisions left to test after this (roughly 11 steps) [38b0020f68b7d80242e46b8eba69ed80ceaec157] scsi: qedf: Fix firmware halt over suspend and resume determine whether the revision contains the guilty commit revision 1cc3fcf63192dfbf5ac13bc6134ae9120ebdcba6 crashed and is reachable testing commit 38b0020f68b7d80242e46b8eba69ed80ceaec157 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 8bccf0b7b935c980d2c01b6dbcae8da2e492a003a0e152b09cd5094cdf6f581e all runs: OK false negative chance: 0.000 # git bisect bad 38b0020f68b7d80242e46b8eba69ed80ceaec157 Bisecting: 790 revisions left to test after this (roughly 10 steps) [cb8a31a56df8492fb0d900959238e1a3ff8b8981] firmware: stratix10-svc: Fix a potential resource leak in svc_create_memory_pool() determine whether the revision contains the guilty commit revision 1cc3fcf63192dfbf5ac13bc6134ae9120ebdcba6 crashed and is reachable testing commit cb8a31a56df8492fb0d900959238e1a3ff8b8981 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b591e80e7d74dd988bf4f45d7586ec69e14e9b9bd1ad0ec61bd2e84544d9610f all runs: crashed: WARNING in bpf_xdp_adjust_tail representative crash: WARNING in bpf_xdp_adjust_tail, types: [WARNING] # git bisect good cb8a31a56df8492fb0d900959238e1a3ff8b8981 Bisecting: 395 revisions left to test after this (roughly 9 steps) [a3a3c7bddab9b6c5690b20796ef5e332b8c48afb] tracing: Fix warning in trace_buffered_event_disable() determine whether the revision contains the guilty commit revision 69925a346acb70be33059f4940ed703ffe0b0756 crashed and is reachable testing commit a3a3c7bddab9b6c5690b20796ef5e332b8c48afb gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: db55bc6fd3c5dac07987d58a0054910182a6a25173983615621afa03bca23d82 all runs: crashed: WARNING in bpf_xdp_adjust_tail representative crash: WARNING in bpf_xdp_adjust_tail, types: [WARNING] # git bisect good a3a3c7bddab9b6c5690b20796ef5e332b8c48afb Bisecting: 197 revisions left to test after this (roughly 8 steps) [ad82aac732c22e043307933e13fe112682bfff0c] USB: zaurus: Add ID for A-300/B-500/C-700 determine whether the revision contains the guilty commit revision cb8a31a56df8492fb0d900959238e1a3ff8b8981 crashed and is reachable testing commit ad82aac732c22e043307933e13fe112682bfff0c gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ab8a4ee39851dfe85851824ba8db1ea94e7c781123011f459dc7649215e2b4e1 all runs: crashed: WARNING in bpf_xdp_adjust_tail representative crash: WARNING in bpf_xdp_adjust_tail, types: [WARNING] # git bisect good ad82aac732c22e043307933e13fe112682bfff0c Bisecting: 98 revisions left to test after this (roughly 7 steps) [4fe91c51aa936779edcae5943b1e621047fe2c2d] drm/amd/display: Update OTG instance in the commit stream determine whether the revision contains the guilty commit revision cb8a31a56df8492fb0d900959238e1a3ff8b8981 crashed and is reachable testing commit 4fe91c51aa936779edcae5943b1e621047fe2c2d gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 16ddd6fb067e16ac92a0211cd469facacee62bc7a5ddcb622563d0d743d27dbb all runs: crashed: WARNING in bpf_xdp_adjust_tail representative crash: WARNING in bpf_xdp_adjust_tail, types: [WARNING] # git bisect good 4fe91c51aa936779edcae5943b1e621047fe2c2d Bisecting: 49 revisions left to test after this (roughly 6 steps) [00f033d451c4844777aea9164a6b2691f904dd92] bonding: Fix incorrect deletion of ETH_P_8021AD protocol vid from slaves determine whether the revision contains the guilty commit revision 69925a346acb70be33059f4940ed703ffe0b0756 crashed and is reachable testing commit 00f033d451c4844777aea9164a6b2691f904dd92 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 9d3abda3517b83dee000fc0bf580415aaa80d73b0ea1620b1590cfd4648bba9a all runs: OK false negative chance: 0.000 # git bisect bad 00f033d451c4844777aea9164a6b2691f904dd92 Bisecting: 24 revisions left to test after this (roughly 5 steps) [f276899f8dbc882dfa634a384ca86e056088dbde] x86/speculation: Add cpu_show_gds() prototype determine whether the revision contains the guilty commit revision ad82aac732c22e043307933e13fe112682bfff0c crashed and is reachable testing commit f276899f8dbc882dfa634a384ca86e056088dbde gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d49c541d885071cb9d1d71bb020b6fe0a232ec8c0edac440887629c6738b9c6b all runs: crashed: WARNING in bpf_xdp_adjust_tail representative crash: WARNING in bpf_xdp_adjust_tail, types: [WARNING] # git bisect good f276899f8dbc882dfa634a384ca86e056088dbde Bisecting: 12 revisions left to test after this (roughly 4 steps) [352dc3ee33c6c37107577b232d64d1fadc0863f4] selftests: forwarding: Switch off timeout determine whether the revision contains the guilty commit revision 4fe91c51aa936779edcae5943b1e621047fe2c2d crashed and is reachable testing commit 352dc3ee33c6c37107577b232d64d1fadc0863f4 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 0272f7aaf1afb08ab2fb6b19f73a2c5243013bc4e41f9e62b9f53c7391be70f4 all runs: crashed: WARNING in bpf_xdp_adjust_tail representative crash: WARNING in bpf_xdp_adjust_tail, types: [WARNING] # git bisect good 352dc3ee33c6c37107577b232d64d1fadc0863f4 Bisecting: 6 revisions left to test after this (roughly 3 steps) [fc0b41ac11069c77723bffd4c9c5adb4dcee635f] macsec: use DEV_STATS_INC() determine whether the revision contains the guilty commit revision 69925a346acb70be33059f4940ed703ffe0b0756 crashed and is reachable testing commit fc0b41ac11069c77723bffd4c9c5adb4dcee635f gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: e6c9dd28dd1234a5e3996a9907021f6aac01ce44f7d901052ed2b24d5763a51e all runs: OK false negative chance: 0.000 # git bisect bad fc0b41ac11069c77723bffd4c9c5adb4dcee635f Bisecting: 2 revisions left to test after this (roughly 2 steps) [ed90fe7435c573897c2ab7624f24d67c866f94a9] bpf, sockmap: Fix map type error in sock_map_del_link determine whether the revision contains the guilty commit revision 4fe91c51aa936779edcae5943b1e621047fe2c2d crashed and is reachable testing commit ed90fe7435c573897c2ab7624f24d67c866f94a9 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: f1bc8d248aab0f0a1a550df4728a301c0e2a0b07e4ffc1aa80173313d84c8fd5 all runs: OK false negative chance: 0.000 # git bisect bad ed90fe7435c573897c2ab7624f24d67c866f94a9 Bisecting: 0 revisions left to test after this (roughly 1 step) [20acffcdc2b74fb7dcc4e299f7aca173df89d911] net: core: remove unnecessary frame_sz check in bpf_xdp_adjust_tail() determine whether the revision contains the guilty commit revision cb8a31a56df8492fb0d900959238e1a3ff8b8981 crashed and is reachable testing commit 20acffcdc2b74fb7dcc4e299f7aca173df89d911 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 0c895713f61238e05eaa80fdd33daee594b97a82604175cbf42a9ba07dc9a102 all runs: OK false negative chance: 0.000 # git bisect bad 20acffcdc2b74fb7dcc4e299f7aca173df89d911 Bisecting: 0 revisions left to test after this (roughly 0 steps) [e59a2e5a3123fea60269bda82c9c7e8723f25b71] selftests: forwarding: tc_flower: Relax success criterion determine whether the revision contains the guilty commit revision a3a3c7bddab9b6c5690b20796ef5e332b8c48afb crashed and is reachable testing commit e59a2e5a3123fea60269bda82c9c7e8723f25b71 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 72a49ca8984e289d89a72c5508e128dc8f6d0ba55466b8756a3ee42d02117932 all runs: crashed: WARNING in bpf_xdp_adjust_tail representative crash: WARNING in bpf_xdp_adjust_tail, types: [WARNING] # git bisect good e59a2e5a3123fea60269bda82c9c7e8723f25b71 20acffcdc2b74fb7dcc4e299f7aca173df89d911 is the first bad commit commit 20acffcdc2b74fb7dcc4e299f7aca173df89d911 Author: Andrew Kanner Date: Thu Aug 3 21:03:18 2023 +0200 net: core: remove unnecessary frame_sz check in bpf_xdp_adjust_tail() commit d14eea09edf427fa36bd446f4a3271f99164202f upstream. Syzkaller reported the following issue: ======================================= Too BIG xdp->frame_sz = 131072 WARNING: CPU: 0 PID: 5020 at net/core/filter.c:4121 ____bpf_xdp_adjust_tail net/core/filter.c:4121 [inline] WARNING: CPU: 0 PID: 5020 at net/core/filter.c:4121 bpf_xdp_adjust_tail+0x466/0xa10 net/core/filter.c:4103 ... Call Trace: bpf_prog_4add87e5301a4105+0x1a/0x1c __bpf_prog_run include/linux/filter.h:600 [inline] bpf_prog_run_xdp include/linux/filter.h:775 [inline] bpf_prog_run_generic_xdp+0x57e/0x11e0 net/core/dev.c:4721 netif_receive_generic_xdp net/core/dev.c:4807 [inline] do_xdp_generic+0x35c/0x770 net/core/dev.c:4866 tun_get_user+0x2340/0x3ca0 drivers/net/tun.c:1919 tun_chr_write_iter+0xe8/0x210 drivers/net/tun.c:2043 call_write_iter include/linux/fs.h:1871 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0x650/0xe40 fs/read_write.c:584 ksys_write+0x12f/0x250 fs/read_write.c:637 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd xdp->frame_sz > PAGE_SIZE check was introduced in commit c8741e2bfe87 ("xdp: Allow bpf_xdp_adjust_tail() to grow packet size"). But Jesper Dangaard Brouer noted that after introducing the xdp_init_buff() which all XDP driver use - it's safe to remove this check. The original intend was to catch cases where XDP drivers have not been updated to use xdp.frame_sz, but that is not longer a concern (since xdp_init_buff). Running the initial syzkaller repro it was discovered that the contiguous physical memory allocation is used for both xdp paths in tun_get_user(), e.g. tun_build_skb() and tun_alloc_skb(). It was also stated by Jesper Dangaard Brouer that XDP can work on higher order pages, as long as this is contiguous physical memory (e.g. a page). Reported-and-tested-by: syzbot+f817490f5bd20541b90a@syzkaller.appspotmail.com Closes: https://lore.kernel.org/all/000000000000774b9205f1d8a80d@google.com/T/ Link: https://syzkaller.appspot.com/bug?extid=f817490f5bd20541b90a Link: https://lore.kernel.org/all/20230725155403.796-1-andrew.kanner@gmail.com/T/ Fixes: 43b5169d8355 ("net, xdp: Introduce xdp_init_buff utility routine") Signed-off-by: Andrew Kanner Acked-by: Jesper Dangaard Brouer Acked-by: Jason Wang Link: https://lore.kernel.org/r/20230803190316.2380231-1-andrew.kanner@gmail.com Signed-off-by: Jakub Kicinski Signed-off-by: Greg Kroah-Hartman net/core/filter.c | 6 ------ 1 file changed, 6 deletions(-) accumulated error probability: 0.00 culprit signature: 0c895713f61238e05eaa80fdd33daee594b97a82604175cbf42a9ba07dc9a102 parent signature: 72a49ca8984e289d89a72c5508e128dc8f6d0ba55466b8756a3ee42d02117932 revisions tested: 21, total time: 3h6m49.569401273s (build: 1h19m4.232819044s, test: 1h40m49.606861699s) first good commit: 20acffcdc2b74fb7dcc4e299f7aca173df89d911 net: core: remove unnecessary frame_sz check in bpf_xdp_adjust_tail() recipients (to): ["andrew.kanner@gmail.com" "gregkh@linuxfoundation.org" "hawk@kernel.org" "jasowang@redhat.com" "kuba@kernel.org" "syzbot+f817490f5bd20541b90a@syzkaller.appspotmail.com"] recipients (cc): []