ci2 starts bisection 2023-11-04 00:14:35.728310468 +0000 UTC m=+18722.633749304 bisecting fixing commit since 12952a23a5da6459aaaaa3ae4bc8ce8fef952ef5 building syzkaller on c4ac074caa7ae68aef44c619a09b02832cc91f35 ensuring issue is reproducible on original commit 12952a23a5da6459aaaaa3ae4bc8ce8fef952ef5 testing commit 12952a23a5da6459aaaaa3ae4bc8ce8fef952ef5 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 60871e7e93914be6bb6ce5991b257eb78e0d74114a006629aaf176ca803d6487 all runs: crashed: WARNING in bpf_probe_read_compat representative crash: WARNING in bpf_probe_read_compat, types: [WARNING] check whether we can drop unnecessary instrumentation disabling configs for [UBSAN KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed testing commit 12952a23a5da6459aaaaa3ae4bc8ce8fef952ef5 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 38e662047b3322c91f84eba158a23be2d60500d355f9e2742d3f61dfc627f554 all runs: OK false negative chance: 0.000 kconfig minimization: base=3703 full=7267 leaves diff=1984 split chunks (needed=false): <1984> split chunk #0 of len 1984 into 5 parts testing without sub-chunk 1/5 testing commit 12952a23a5da6459aaaaa3ae4bc8ce8fef952ef5 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a0c79fd4385974eb050c654e1d6cbe558035a6981bbb1bb201c47e938a0dad2c all runs: crashed: WARNING in bpf_probe_read_compat representative crash: WARNING in bpf_probe_read_compat, types: [WARNING] the chunk can be dropped testing without sub-chunk 2/5 testing commit 12952a23a5da6459aaaaa3ae4bc8ce8fef952ef5 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: cdf38a8ca74c0c615d13dcb3bb24a17aee5c7e1488540c7040d732896e7ce89a all runs: crashed: WARNING in bpf_probe_read_compat representative crash: WARNING in bpf_probe_read_compat, types: [WARNING] the chunk can be dropped testing without sub-chunk 3/5 testing commit 12952a23a5da6459aaaaa3ae4bc8ce8fef952ef5 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 98df23888be8055873030f048a5567c9a4803ef796f0e421cd0d3000fce6cb22 all runs: crashed: WARNING in bpf_probe_read_compat representative crash: WARNING in bpf_probe_read_compat, types: [WARNING] the chunk can be dropped testing without sub-chunk 4/5 testing commit 12952a23a5da6459aaaaa3ae4bc8ce8fef952ef5 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ac42181b23728562de484519ace12280e34810f5407ecc4e54a0941dd5ab861f all runs: crashed: WARNING in bpf_probe_read_compat representative crash: WARNING in bpf_probe_read_compat, types: [WARNING] the chunk can be dropped testing without sub-chunk 5/5 testing commit 12952a23a5da6459aaaaa3ae4bc8ce8fef952ef5 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 4ba5381dd74fffd0372e6f9b7cddd62d63c3f6dcd22611ad488f26dbbf7ed8c9 all runs: OK false negative chance: 0.000 minimized to 396 configs; suspects: [ARCH_ENABLE_MEMORY_HOTREMOVE ATM BCMA BLK_DEV_ZONED BPF_SYSCALL CARDBUS CFG80211 CFG80211_WEXT CMA CONTIG_ALLOC CRYPTO_842 CRYPTO_LZ4 CRYPTO_LZ4HC CRYPTO_LZO CRYPTO_ZSTD DVB_CORE EXTCON FB FRONTSWAP GPIOLIB HID_ZEROPLUS I2C_MUX IIO IRQ_REMAP 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_HOTPLUG_SPARSE MEMORY_HOTREMOVE MFD_VIPERBOARD PARPORT PCCARD PCMCIA PHONET RADIO_ADAPTERS RADIO_SI470X RADIO_SI4713 RC_CORE RFKILL SND SOUND SPI SSB TAP TARGET_CORE TUN USB_AMD5536UDC USB_ATM USB_CONFIGFS USB_CONFIGFS_F_PRINTER USB_CONFIGFS_F_TCM 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 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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_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_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 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 XOR_BLOCKS YENTA YENTA_ENE_TUNE YENTA_O2 YENTA_RICOH YENTA_TI YENTA_TOSHIBA ZBUD ZEROPLUS_FF ZONEFS_FS ZPOOL ZRAM ZRAM_DEF_COMP_LZORLE ZSMALLOC ZSTD_COMPRESS ZSWAP ZSWAP_COMPRESSOR_DEFAULT_LZO ZSWAP_DEFAULT_ON ZSWAP_ZPOOL_DEFAULT_ZBUD] determining the merge base between 12952a23a5da6459aaaaa3ae4bc8ce8fef952ef5 and e392ea4d4d00880bf94550151b1ace4f88a4b17a 8bb7eca972ad531c9b149c0a51ab43a417385813/Linux 5.15 is a merge base, check if it has the bug testing commit 8bb7eca972ad531c9b149c0a51ab43a417385813 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 691f3367b6d73ec33676548b9c819599356156faa802c72cf71e333642156183 all runs: crashed: WARNING in bpf_probe_read_compat representative crash: WARNING in bpf_probe_read_compat, types: [WARNING] testing current HEAD e392ea4d4d00880bf94550151b1ace4f88a4b17a testing commit e392ea4d4d00880bf94550151b1ace4f88a4b17a gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 3b59e4c744aca7f380859c46d8fe2edc69569b451f826fa288de568b80c3d1f5 all runs: OK false negative chance: 0.000 # git bisect start e392ea4d4d00880bf94550151b1ace4f88a4b17a 8bb7eca972ad531c9b149c0a51ab43a417385813 Bisecting: 92676 revisions left to test after this (roughly 17 steps) [4bbf3422df78029f03161640dcb1e9d1ed64d1ea] Merge tag 'net-6.1-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit 4bbf3422df78029f03161640dcb1e9d1ed64d1ea gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 20f093e3b6eafd8a3a31755785ff18023587c913ae733612e5c1b5ba8a359bc6 run #0: crashed: WARNING in bpf_probe_read_compat run #1: crashed: WARNING in bpf_probe_read_compat run #2: crashed: WARNING in bpf_probe_read_compat run #3: crashed: WARNING in bpf_probe_read_compat run #4: crashed: WARNING in bpf_probe_read_compat run #5: crashed: WARNING in bpf_probe_read_compat run #6: crashed: WARNING in bpf_probe_read_compat run #7: crashed: WARNING in bpf_probe_read_compat run #8: crashed: WARNING in bpf_probe_read_compat run #9: crashed: inconsistent lock state in valid_state representative crash: WARNING in bpf_probe_read_compat, types: [WARNING] # git bisect good 4bbf3422df78029f03161640dcb1e9d1ed64d1ea Bisecting: 46325 revisions left to test after this (roughly 16 steps) [3af49062b0115b55a54615109172b44f618daf97] Merge tag 'mfd-next-6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit 3af49062b0115b55a54615109172b44f618daf97 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: e1920b676a6b7a9d328d9a4a3c6fb16bf7dcbeb0c9872f09b9268fe25cb2c519 all runs: OK false negative chance: 0.000 # git bisect bad 3af49062b0115b55a54615109172b44f618daf97 Bisecting: 22926 revisions left to test after this (roughly 15 steps) [5b7c4cabbb65f5c469464da6c5f614cbd7f730f2] Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c6ca47999e105dbfee853682658168627cb12f32faa11da9f6385f765c6a59f7 all runs: crashed: WARNING in bpf_probe_read_compat representative crash: WARNING in bpf_probe_read_compat, types: [WARNING] # git bisect good 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 Bisecting: 11352 revisions left to test after this (roughly 14 steps) [c2865b1122595e69e7df52d01f7f02338b8babca] Daniel Borkmann says: determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit c2865b1122595e69e7df52d01f7f02338b8babca gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: e096ee733418e30e921e948e700f5201669754abee170654cc170b40a0dd8d20 all runs: OK false negative chance: 0.000 # git bisect bad c2865b1122595e69e7df52d01f7f02338b8babca Bisecting: 5776 revisions left to test after this (roughly 13 steps) [d0a32f5520a33e7f2ace396db6913625e0d29544] Merge tag 'powerpc-6.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit d0a32f5520a33e7f2ace396db6913625e0d29544 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 25f47f916d5e33cf4783f05253257f99690cb0302e6d8830920756d866cb0b2c all runs: crashed: WARNING in bpf_probe_read_compat representative crash: WARNING in bpf_probe_read_compat, types: [WARNING] # git bisect good d0a32f5520a33e7f2ace396db6913625e0d29544 Bisecting: 2889 revisions left to test after this (roughly 12 steps) [7622976c8f4f233fac251263e08adee27969abcd] Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi determine whether the revision contains the guilty commit revision 4bbf3422df78029f03161640dcb1e9d1ed64d1ea crashed and is reachable testing commit 7622976c8f4f233fac251263e08adee27969abcd gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c3ed3b7a645229684b3830e03113968ecad85120a1d9377e99fbca916817b6a4 all runs: crashed: WARNING in bpf_probe_read_compat representative crash: WARNING in bpf_probe_read_compat, types: [WARNING] # git bisect good 7622976c8f4f233fac251263e08adee27969abcd Bisecting: 1470 revisions left to test after this (roughly 11 steps) [829cca4d1783088e43bace57a555044cc937c554] Merge tag 'net-6.3-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net determine whether the revision contains the guilty commit revision 4bbf3422df78029f03161640dcb1e9d1ed64d1ea crashed and is reachable testing commit 829cca4d1783088e43bace57a555044cc937c554 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c041b23661cc68e64daa413535407439ba203a6d0032ef62dc3ba26a4ed0b736 all runs: crashed: WARNING in bpf_probe_read_compat representative crash: WARNING in bpf_probe_read_compat, types: [WARNING] # git bisect good 829cca4d1783088e43bace57a555044cc937c554 Bisecting: 735 revisions left to test after this (roughly 10 steps) [b7f5e17b3bb96165979f55f2821190a77f984d0e] sfc: handle enc keys in efx_tc_flower_parse_match() determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit b7f5e17b3bb96165979f55f2821190a77f984d0e gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 11d538cb85277c6d2c32790da02428618a3a5e0148585b92f76ea90b39e3f405 all runs: crashed: WARNING in bpf_probe_read_compat representative crash: WARNING in bpf_probe_read_compat, types: [WARNING] # git bisect good b7f5e17b3bb96165979f55f2821190a77f984d0e Bisecting: 367 revisions left to test after this (roughly 9 steps) [92d2c594aa096bba674da5fdcdc0e89cba79a147] Merge tag 'mlx5-updates-2023-04-05' of git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux determine whether the revision contains the guilty commit revision 4bbf3422df78029f03161640dcb1e9d1ed64d1ea crashed and is reachable testing commit 92d2c594aa096bba674da5fdcdc0e89cba79a147 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: e669b7b5ab26cec4a6e324835b52bde40222ab48b430eb051f5c22fa5bcc595b all runs: crashed: WARNING in bpf_probe_read_compat representative crash: WARNING in bpf_probe_read_compat, types: [WARNING] # git bisect good 92d2c594aa096bba674da5fdcdc0e89cba79a147 Bisecting: 183 revisions left to test after this (roughly 8 steps) [8a9abe0293294fee279750058a509bbfab0c57a3] Merge branch 'veristat: add better support of freplace programs' determine whether the revision contains the guilty commit revision d0a32f5520a33e7f2ace396db6913625e0d29544 crashed and is reachable testing commit 8a9abe0293294fee279750058a509bbfab0c57a3 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c06d92c4302509aa0ea1856e79402618165592dc67c9a0ddba31a85e8aaf356b all runs: crashed: WARNING in bpf_probe_read_compat representative crash: WARNING in bpf_probe_read_compat, types: [WARNING] # git bisect good 8a9abe0293294fee279750058a509bbfab0c57a3 Bisecting: 91 revisions left to test after this (roughly 7 steps) [c50e96099edb134bf107fafc02715fbc4aa2277f] bpf,fou: Add bpf_skb_{set,get}_fou_encap kfuncs determine whether the revision contains the guilty commit revision d0a32f5520a33e7f2ace396db6913625e0d29544 crashed and is reachable testing commit c50e96099edb134bf107fafc02715fbc4aa2277f gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: f9db47756c083d1796a98d71f4d969cb4425179e2adcdd4c196b3d2621300715 all runs: crashed: WARNING in bpf_probe_read_compat representative crash: WARNING in bpf_probe_read_compat, types: [WARNING] # git bisect good c50e96099edb134bf107fafc02715fbc4aa2277f Bisecting: 45 revisions left to test after this (roughly 6 steps) [18bb56ab4477b966e2974b96a5e3bf9ba052aac5] net: dsa: mv88e6xxx: Correct cmode to PHY_INTERFACE_ determine whether the revision contains the guilty commit revision b7f5e17b3bb96165979f55f2821190a77f984d0e crashed and is reachable testing commit 18bb56ab4477b966e2974b96a5e3bf9ba052aac5 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 4731cf0c91a5edc8712d2dd841dcc8ce39167dde5987be833632b8247c6587d5 all runs: crashed: WARNING in bpf_probe_read_compat representative crash: WARNING in bpf_probe_read_compat, types: [WARNING] # git bisect good 18bb56ab4477b966e2974b96a5e3bf9ba052aac5 Bisecting: 22 revisions left to test after this (roughly 5 steps) [33719b57f52e5b761234373f98f55f4e036d61c9] net: stmmac: dwmac4: Allow platforms to specify some DMA/MTL offsets determine whether the revision contains the guilty commit revision 92d2c594aa096bba674da5fdcdc0e89cba79a147 crashed and is reachable testing commit 33719b57f52e5b761234373f98f55f4e036d61c9 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ae59071ca0f511c202942d5a9ed9d1a888a1d08f564d4971cd8ef81e10f2bd5b all runs: crashed: WARNING in bpf_probe_read_compat representative crash: WARNING in bpf_probe_read_compat, types: [WARNING] # git bisect good 33719b57f52e5b761234373f98f55f4e036d61c9 Bisecting: 11 revisions left to test after this (roughly 4 steps) [1ba83f505c53d35eda892ac7f108ef1189da6fa8] xsk: Elide base_addr comparison in xp_unaligned_validate_desc determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit 1ba83f505c53d35eda892ac7f108ef1189da6fa8 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 91f85717f12bf02c835d54467807da76473b4be6c43baeab03f533f210d1c13a all runs: OK false negative chance: 0.000 # git bisect bad 1ba83f505c53d35eda892ac7f108ef1189da6fa8 Bisecting: 5 revisions left to test after this (roughly 3 steps) [de6d014a09bf12a9a8959d60c0a1d4a41d394a89] selftests/bpf: Use read_perf_max_sample_freq() in perf_event_stackmap determine whether the revision contains the guilty commit revision 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 crashed and is reachable testing commit de6d014a09bf12a9a8959d60c0a1d4a41d394a89 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 25d47b8fc7b60af9264367c21e532b8918a0a3e7e165d9aa2c38a020a6c088f9 all runs: OK false negative chance: 0.000 # git bisect bad de6d014a09bf12a9a8959d60c0a1d4a41d394a89 Bisecting: 2 revisions left to test after this (roughly 1 step) [bbc73e6855b80144cd43d165696f1ff56d6192c9] Merge branch 'Add FOU support for externally controlled ipip devices' determine whether the revision contains the guilty commit revision 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 crashed and is reachable testing commit bbc73e6855b80144cd43d165696f1ff56d6192c9 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 44f74cf84b24250d32d04baa5e309f0e211bb631ef34e68e81536ba8e249ce1f all runs: crashed: WARNING in bpf_probe_read_compat representative crash: WARNING in bpf_probe_read_compat, types: [WARNING] # git bisect good bbc73e6855b80144cd43d165696f1ff56d6192c9 Bisecting: 0 revisions left to test after this (roughly 1 step) [5a674611d116a5fc28c5429beea2b78c6e2933ef] selftests/bpf: Fix use of uninitialized op_name in log tests determine whether the revision contains the guilty commit revision d0a32f5520a33e7f2ace396db6913625e0d29544 crashed and is reachable testing commit 5a674611d116a5fc28c5429beea2b78c6e2933ef gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 7b2251d1d41ccf3a1d2ad8e942c84a8e8eb87131bf00f350164a68d9dde2ce3c all runs: OK false negative chance: 0.000 # git bisect bad 5a674611d116a5fc28c5429beea2b78c6e2933ef Bisecting: 0 revisions left to test after this (roughly 0 steps) [d319f344561de23e810515d109c7278919bff7b0] mm: Fix copy_from_user_nofault(). determine whether the revision contains the guilty commit revision 4bbf3422df78029f03161640dcb1e9d1ed64d1ea crashed and is reachable testing commit d319f344561de23e810515d109c7278919bff7b0 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 33f0afa3560156c5700583326ae2fe6f527c9000f6c59b5f9700228eda74e2ff all runs: OK false negative chance: 0.000 # git bisect bad d319f344561de23e810515d109c7278919bff7b0 d319f344561de23e810515d109c7278919bff7b0 is the first bad commit commit d319f344561de23e810515d109c7278919bff7b0 Author: Alexei Starovoitov Date: Mon Apr 10 19:43:44 2023 +0200 mm: Fix copy_from_user_nofault(). There are several issues with copy_from_user_nofault(): - access_ok() is designed for user context only and for that reason it has WARN_ON_IN_IRQ() which triggers when bpf, kprobe, eprobe and perf on ppc are calling it from irq. - it's missing nmi_uaccess_okay() which is a nop on all architectures except x86 where it's required. The comment in arch/x86/mm/tlb.c explains the details why it's necessary. Calling copy_from_user_nofault() from bpf, [ke]probe without this check is not safe. - __copy_from_user_inatomic() under CONFIG_HARDENED_USERCOPY is calling check_object_size()->__check_object_size()->check_heap_object()->find_vmap_area()->spin_lock() which is not safe to do from bpf, [ke]probe and perf due to potential deadlock. Fix all three issues. At the end the copy_from_user_nofault() becomes equivalent to copy_from_user_nmi() from safety point of view with a difference in the return value. Reported-by: Hsin-Wei Hung Signed-off-by: Alexei Starovoitov Signed-off-by: Florian Lehner Tested-by: Hsin-Wei Hung Tested-by: Florian Lehner Link: https://lore.kernel.org/r/20230410174345.4376-2-dev@der-flo.net Signed-off-by: Alexei Starovoitov mm/maccess.c | 16 +++++++++++----- mm/usercopy.c | 2 +- 2 files changed, 12 insertions(+), 6 deletions(-) accumulated error probability: 0.00 culprit signature: 33f0afa3560156c5700583326ae2fe6f527c9000f6c59b5f9700228eda74e2ff parent signature: 44f74cf84b24250d32d04baa5e309f0e211bb631ef34e68e81536ba8e249ce1f revisions tested: 27, total time: 5h3m50.684139671s (build: 2h15m49.629157043s, test: 2h37m48.274428238s) first good commit: d319f344561de23e810515d109c7278919bff7b0 mm: Fix copy_from_user_nofault(). recipients (to): ["ast@kernel.org" "dev@der-flo.net" "hsinweih@uci.edu"] recipients (cc): []