ci2 starts bisection 2023-11-05 20:34:33.773079339 +0000 UTC m=+178320.678518165 bisecting fixing commit since 12952a23a5da6459aaaaa3ae4bc8ce8fef952ef5 building syzkaller on 500bfdc41735bc8d617cbfd4f1ab6b5980c8f1e5 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_user representative crash: WARNING in bpf_probe_read_user, 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_user representative crash: WARNING in bpf_probe_read_user, 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_user representative crash: WARNING in bpf_probe_read_user, 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_user representative crash: WARNING in bpf_probe_read_user, 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_user representative crash: WARNING in bpf_probe_read_user, 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 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_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 77fa2fbe87fc605c4bfa87dff87be9bfded0e9a3 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_user representative crash: WARNING in bpf_probe_read_user, types: [WARNING] testing current HEAD 77fa2fbe87fc605c4bfa87dff87be9bfded0e9a3 testing commit 77fa2fbe87fc605c4bfa87dff87be9bfded0e9a3 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 97e60cfaf18362fa8d542c83cedda1b38a9d3840d8c76c0f7c135bb898adc25f all runs: OK false negative chance: 0.000 # git bisect start 77fa2fbe87fc605c4bfa87dff87be9bfded0e9a3 8bb7eca972ad531c9b149c0a51ab43a417385813 Bisecting: 93536 revisions left to test after this (roughly 17 steps) [f4c4ca70dedc1bce8e7b1648e652aa9be1d3fcd7] Merge tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit f4c4ca70dedc1bce8e7b1648e652aa9be1d3fcd7 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 5a7ce1978590eb602b532d0ca2e0a0058623959714b3452649f37d5e3e6f857f all runs: crashed: WARNING in bpf_probe_read_user representative crash: WARNING in bpf_probe_read_user, types: [WARNING] # git bisect good f4c4ca70dedc1bce8e7b1648e652aa9be1d3fcd7 Bisecting: 46717 revisions left to test after this (roughly 16 steps) [f085df1be60abf670315c11036261cfaec16b2eb] Merge tag 'perf-tools-for-v6.4-3-2023-05-06' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit f085df1be60abf670315c11036261cfaec16b2eb gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 0a7757684260da54ef32e82313a309fb3d18cb33f7c5052c8b81b5e70639e478 all runs: OK false negative chance: 0.000 # git bisect bad f085df1be60abf670315c11036261cfaec16b2eb Bisecting: 23420 revisions left to test after this (roughly 15 steps) [6c71297eaf713ece684a367ce9aff06069d715b9] Merge tag 'for-linus-2023022201' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit 6c71297eaf713ece684a367ce9aff06069d715b9 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b58577cae13d4fc0a0e941a143edee5a18bdf9aa399ee164d8d33d1b10ce20ce all runs: crashed: WARNING in bpf_probe_read_user representative crash: WARNING in bpf_probe_read_user, types: [WARNING] # git bisect good 6c71297eaf713ece684a367ce9aff06069d715b9 Bisecting: 11720 revisions left to test after this (roughly 14 steps) [8e8e47d9e84ff9a6f1072177bd7ec1d2f12f4d5c] Merge branch 'add-page_pool-support-for-page-recycling-in-veth-driver' determine whether the revision contains the guilty commit revision 6c71297eaf713ece684a367ce9aff06069d715b9 crashed and is reachable testing commit 8e8e47d9e84ff9a6f1072177bd7ec1d2f12f4d5c gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 4300bd5b3b2da63339ccfcb0bf8d1e7abc6cd88225ff3418d152e4472973947c all runs: OK false negative chance: 0.000 # git bisect bad 8e8e47d9e84ff9a6f1072177bd7ec1d2f12f4d5c Bisecting: 5768 revisions left to test after this (roughly 13 steps) [1ec35eadc3b448c91a6b763371a7073444e95f9d] Merge tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux determine whether the revision contains the guilty commit revision f4c4ca70dedc1bce8e7b1648e652aa9be1d3fcd7 crashed and is reachable testing commit 1ec35eadc3b448c91a6b763371a7073444e95f9d gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d2e339bc890e4e7b0ed27a4c1fdff1f47187c11b018e41b282d2200a18314afb all runs: crashed: WARNING in bpf_probe_read_user representative crash: WARNING in bpf_probe_read_user, types: [WARNING] # git bisect good 1ec35eadc3b448c91a6b763371a7073444e95f9d Bisecting: 2884 revisions left to test after this (roughly 12 steps) [3df82e4201f5415f4773d4ca8f0ee5a71d5b88fa] Merge tag 'regulator-fix-v6.3-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator determine whether the revision contains the guilty commit revision 1ec35eadc3b448c91a6b763371a7073444e95f9d crashed and is reachable testing commit 3df82e4201f5415f4773d4ca8f0ee5a71d5b88fa gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 62e33a1bdd8dbae0f48c047651ef415d39d51cd2f398ad1079a1133b0d7244e4 all runs: crashed: WARNING in bpf_probe_read_user representative crash: WARNING in bpf_probe_read_user, types: [WARNING] # git bisect good 3df82e4201f5415f4773d4ca8f0ee5a71d5b88fa Bisecting: 1510 revisions left to test after this (roughly 11 steps) [4033eaa68af6e3e9a8ec3819a9369d29aee8a2c4] Merge branch 'net-use-read_once-write_once-for-ring-index-accesses' determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit 4033eaa68af6e3e9a8ec3819a9369d29aee8a2c4 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 7358de06fac7a1e2e1ce33d1b40b3ed7f26163372af13b8776f0ef4d510c64dd all runs: crashed: WARNING in bpf_probe_read_user representative crash: WARNING in bpf_probe_read_user, types: [WARNING] # git bisect good 4033eaa68af6e3e9a8ec3819a9369d29aee8a2c4 Bisecting: 760 revisions left to test after this (roughly 10 steps) [f9c895a72a390656f9582e048fdcc3d2cec1dd7c] net/mlx5: Update op_mode to op_mod for port selection determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit f9c895a72a390656f9582e048fdcc3d2cec1dd7c gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 704e214274536e4080c00e7ec52230829413284d23fac041d3598edccc7a2d7c all runs: OK false negative chance: 0.000 # git bisect bad f9c895a72a390656f9582e048fdcc3d2cec1dd7c Bisecting: 460 revisions left to test after this (roughly 9 steps) [8c5c2a4898e3d6bad86e29d471e023c8a19ba799] bpf, sockmap: Revert buggy deadlock fix in the sockhash and sockmap determine whether the revision contains the guilty commit revision 6c71297eaf713ece684a367ce9aff06069d715b9 crashed and is reachable testing commit 8c5c2a4898e3d6bad86e29d471e023c8a19ba799 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: abf6b18d3e30afb818e026fb97028bd544ceb4814352d2944802220c870ddb39 all runs: OK false negative chance: 0.000 # git bisect bad 8c5c2a4898e3d6bad86e29d471e023c8a19ba799 Bisecting: 144 revisions left to test after this (roughly 7 steps) [e297875580662f2fdcde1cba4ea28bf70ea2ca49] selftests/bpf: verifier/ld_ind.c converted to inline assembly determine whether the revision contains the guilty commit revision 6c71297eaf713ece684a367ce9aff06069d715b9 crashed and is reachable testing commit e297875580662f2fdcde1cba4ea28bf70ea2ca49 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: bbdf2026f70fd49ccd28d3df06b929b67c65490e6ecc4b6501185b6699a87546 all runs: crashed: WARNING in bpf_probe_read_user representative crash: WARNING in bpf_probe_read_user, types: [WARNING] # git bisect good e297875580662f2fdcde1cba4ea28bf70ea2ca49 Bisecting: 72 revisions left to test after this (roughly 6 steps) [e8f59d84f43deab59bb86ff9e12cd4d542a4bb34] Merge branch 'bpf: Follow up to RCU enforcement in the verifier.' determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit e8f59d84f43deab59bb86ff9e12cd4d542a4bb34 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b912729aa6774522fbb1b67fd70db5cb7865f0e738c8242f2cf7de79346df138 all runs: crashed: WARNING in bpf_probe_read_user representative crash: WARNING in bpf_probe_read_user, types: [WARNING] # git bisect good e8f59d84f43deab59bb86ff9e12cd4d542a4bb34 Bisecting: 36 revisions left to test after this (roughly 5 steps) [d0d75c67c45abd3930967dcafc82fd4505400665] veristat: Add more veristat control over verifier log options determine whether the revision contains the guilty commit revision e8f59d84f43deab59bb86ff9e12cd4d542a4bb34 crashed and is reachable testing commit d0d75c67c45abd3930967dcafc82fd4505400665 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 8b4e24f5487729e62bcd4594adccf7939f73664d9eb07c641a9bd02a7f043ef1 all runs: crashed: WARNING in bpf_probe_read_user representative crash: WARNING in bpf_probe_read_user, types: [WARNING] # git bisect good d0d75c67c45abd3930967dcafc82fd4505400665 Bisecting: 18 revisions left to test after this (roughly 4 steps) [10fd5f70c397782a97f411f25bfb312ea92b55bc] bpf: Handle NULL in bpf_local_storage_free. determine whether the revision contains the guilty commit revision e8f59d84f43deab59bb86ff9e12cd4d542a4bb34 crashed and is reachable testing commit 10fd5f70c397782a97f411f25bfb312ea92b55bc gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 36fc285fbc02827b475a32671ebca01e9d73cc239d81931516637c9e6411477c all runs: crashed: WARNING in bpf_probe_read_user representative crash: WARNING in bpf_probe_read_user, types: [WARNING] # git bisect good 10fd5f70c397782a97f411f25bfb312ea92b55bc Bisecting: 9 revisions left to test after this (roughly 3 steps) [d319f344561de23e810515d109c7278919bff7b0] mm: Fix copy_from_user_nofault(). determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 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: a27bd69a00d06751ed3875c8cc300920b0c4dde1a95ddd26634296121870d434 all runs: OK false negative chance: 0.000 # git bisect bad d319f344561de23e810515d109c7278919bff7b0 Bisecting: 4 revisions left to test after this (roughly 2 steps) [ed17aa92dc56b6d8883e4b7a8f1c6fbf5ed6cd29] bpf, sockmap: fix deadlocks in the sockhash and sockmap determine whether the revision contains the guilty commit revision 6c71297eaf713ece684a367ce9aff06069d715b9 crashed and is reachable testing commit ed17aa92dc56b6d8883e4b7a8f1c6fbf5ed6cd29 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 7c3a84c649e569bc8908f1522a4adfa26ed9be23c081ca178215f58c0c3173a4 all runs: crashed: WARNING in bpf_probe_read_user representative crash: WARNING in bpf_probe_read_user, types: [WARNING] # git bisect good ed17aa92dc56b6d8883e4b7a8f1c6fbf5ed6cd29 Bisecting: 2 revisions left to test after this (roughly 1 step) [c50e96099edb134bf107fafc02715fbc4aa2277f] bpf,fou: Add bpf_skb_{set,get}_fou_encap kfuncs determine whether the revision contains the guilty commit revision d0d75c67c45abd3930967dcafc82fd4505400665 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: 5cbc8556ac1d194143c4224bcd3e7f950400b2ee8d85f2357e43b5664bcdec72 all runs: crashed: WARNING in bpf_probe_read_user representative crash: WARNING in bpf_probe_read_user, types: [WARNING] # git bisect good c50e96099edb134bf107fafc02715fbc4aa2277f Bisecting: 0 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 e8f59d84f43deab59bb86ff9e12cd4d542a4bb34 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: 3748c0901a03b6b874100e7882295f90fc90f0b98097a18402889f2da7177972 all runs: crashed: WARNING in bpf_probe_read_user representative crash: WARNING in bpf_probe_read_user, types: [WARNING] # git bisect good bbc73e6855b80144cd43d165696f1ff56d6192c9 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: a27bd69a00d06751ed3875c8cc300920b0c4dde1a95ddd26634296121870d434 parent signature: 3748c0901a03b6b874100e7882295f90fc90f0b98097a18402889f2da7177972 revisions tested: 26, total time: 4h18m26.570496987s (build: 1h39m53.676316544s, test: 2h29m0.887463346s) first good commit: d319f344561de23e810515d109c7278919bff7b0 mm: Fix copy_from_user_nofault(). recipients (to): ["ast@kernel.org" "dev@der-flo.net" "hsinweih@uci.edu"] recipients (cc): []