ci starts bisection 2023-08-04 02:01:15.355628056 +0000 UTC m=+26418.579489976 bisecting cause commit starting from 25ad10658dc1068a671553ff10e19a812c2a3783 building syzkaller on 39a91c1806bfc2087977dbe31529c34219a8aba6 ensuring issue is reproducible on original commit 25ad10658dc1068a671553ff10e19a812c2a3783 testing commit 25ad10658dc1068a671553ff10e19a812c2a3783 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c8b816bee5ca8852a3f9140670003332512bca51dc291f538c2bcb944bc26238 run #0: crashed: BUG: unable to handle kernel paging request in strnchr run #1: crashed: BUG: unable to handle kernel paging request in strnchr run #2: crashed: general protection fault in strnchr run #3: crashed: general protection fault in strnchr run #4: crashed: BUG: unable to handle kernel paging request in strnchr run #5: crashed: BUG: unable to handle kernel paging request in strnchr run #6: crashed: BUG: unable to handle kernel paging request in strnchr run #7: crashed: BUG: unable to handle kernel paging request in strnchr run #8: crashed: BUG: unable to handle kernel paging request in strnchr run #9: crashed: BUG: unable to handle kernel paging request in strnchr run #10: crashed: BUG: unable to handle kernel paging request in strnchr run #11: crashed: BUG: unable to handle kernel paging request in strnchr run #12: crashed: general protection fault in strnchr run #13: crashed: general protection fault in strnchr run #14: crashed: general protection fault in strnchr run #15: crashed: general protection fault in strnchr run #16: crashed: general protection fault in strnchr run #17: crashed: general protection fault in strnchr run #18: crashed: general protection fault in strnchr run #19: crashed: general protection fault in strnchr run #20: crashed: BUG: unable to handle kernel paging request in strnchr run #21: crashed: BUG: unable to handle kernel paging request in strnchr run #22: crashed: BUG: unable to handle kernel paging request in strnchr run #23: crashed: BUG: unable to handle kernel paging request in strnchr run #24: crashed: BUG: unable to handle kernel paging request in strnchr run #25: crashed: BUG: unable to handle kernel paging request in strnchr run #26: crashed: BUG: unable to handle kernel paging request in strnchr run #27: crashed: BUG: unable to handle kernel paging request in strnchr run #28: crashed: BUG: unable to handle kernel paging request in strnchr run #29: crashed: BUG: unable to handle kernel paging request in strnchr run #30: crashed: BUG: unable to handle kernel paging request in strnchr run #31: crashed: BUG: unable to handle kernel paging request in strnchr run #32: crashed: BUG: unable to handle kernel paging request in strnchr run #33: crashed: BUG: unable to handle kernel paging request in strnchr run #34: crashed: general protection fault in strnchr run #35: crashed: general protection fault in strnchr run #36: crashed: BUG: unable to handle kernel paging request in strnchr run #37: crashed: BUG: unable to handle kernel paging request in strnchr run #38: crashed: BUG: unable to handle kernel paging request in strnchr run #39: crashed: BUG: unable to handle kernel paging request in strnchr representative crash: BUG: unable to handle kernel paging request in strnchr, types: [UNKNOWN] check whether we can drop unnecessary instrumentation disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP HANG], they are not needed testing commit 25ad10658dc1068a671553ff10e19a812c2a3783 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c2e8f5a03417bb917f2c1832b84d4ed73d0317cbe73ff248644da30b62fc40f0 all runs: crashed: BUG: unable to handle kernel paging request in strnchr representative crash: BUG: unable to handle kernel paging request in strnchr, types: [UNKNOWN] the bug reproduces without the instrumentation disabling configs for [HANG LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed kconfig minimization: base=3883 full=7654 leaves diff=1998 split chunks (needed=false): <1998> split chunk #0 of len 1998 into 5 parts testing without sub-chunk 1/5 disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG KASAN], they are not needed testing commit 25ad10658dc1068a671553ff10e19a812c2a3783 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b57e469eb010c4c42f9be53993853ce46abded7e72e3364e393014e8996dbc4e all runs: crashed: BUG: unable to handle kernel paging request in strnchr representative crash: BUG: unable to handle kernel paging request in strnchr, types: [UNKNOWN] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN BUG KASAN LOCKDEP], they are not needed testing commit 25ad10658dc1068a671553ff10e19a812c2a3783 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 2ffd09699f687d52ee537b9895e1f61b14f2b69740c616afb4b0e978cfc9e256 all runs: crashed: BUG: unable to handle kernel paging request in strnchr representative crash: BUG: unable to handle kernel paging request in strnchr, types: [UNKNOWN] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG KASAN], they are not needed testing commit 25ad10658dc1068a671553ff10e19a812c2a3783 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: dc31bc1167918956c35e03b7a069f66f555202b166b09925b03d306bad7e2bdc all runs: crashed: BUG: unable to handle kernel paging request in strnchr representative crash: BUG: unable to handle kernel paging request in strnchr, types: [UNKNOWN] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [HANG LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit 25ad10658dc1068a671553ff10e19a812c2a3783 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 171d58463810393def98115e6c2bce102990ce319243bba74ace72d379cd5935 all runs: crashed: BUG: unable to handle kernel paging request in strnchr representative crash: BUG: unable to handle kernel paging request in strnchr, types: [UNKNOWN] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [BUG KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed testing commit 25ad10658dc1068a671553ff10e19a812c2a3783 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c68ad672dab0ecd8d76ff5f03ad1aaa1b88f84df643293677ff9f21714f4acae all runs: OK false negative chance: 0.000 minimized to 398 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 IOMMUFD IRQ_REMAP 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 TARGET_CORE TUN USB_AMD5536UDC USB_ATM USB_CONFIGFS USB_CONFIGFS_F_LB_SS USB_CONFIGFS_F_MIDI 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_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_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_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 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_CMDLINE 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_NOMODESET 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 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 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_DEFAULT_ON ZSWAP_ZPOOL_DEFAULT_ZBUD] disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN BUG KASAN LOCKDEP], they are not needed testing release v6.4 testing commit 6995e2de6891c724bfeb2db33d7b87775f913ad1 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: f14c746e5afdbdb291bc2195387b98e1f4ea408b62dbd36bdc3c8da9d4f75bdb all runs: OK false negative chance: 0.000 # git bisect start 25ad10658dc1068a671553ff10e19a812c2a3783 6995e2de6891c724bfeb2db33d7b87775f913ad1 Bisecting: 6347 revisions left to test after this (roughly 13 steps) [1b722407a13b7f8658d2e26917791f32805980a2] Merge tag 'drm-next-2023-06-29' of git://anongit.freedesktop.org/drm/drm testing commit 1b722407a13b7f8658d2e26917791f32805980a2 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a4518b8ea6054685ed3a845d1777f0cb6540f38a66562f7a772eb0b602737921 all runs: OK false negative chance: 0.000 # git bisect good 1b722407a13b7f8658d2e26917791f32805980a2 Bisecting: 3153 revisions left to test after this (roughly 12 steps) [b8ec70ab66b09ee9e081a38b8625b5accb388176] Merge tag 'mfd-next-6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd testing commit b8ec70ab66b09ee9e081a38b8625b5accb388176 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: fe40f3d68bea3c14ad803692262513b0a241f54a1422bd09ebaf3152fd37cbf8 all runs: OK false negative chance: 0.000 # git bisect good b8ec70ab66b09ee9e081a38b8625b5accb388176 Bisecting: 1571 revisions left to test after this (roughly 11 steps) [ace1ba1c9038b30f29c5759bc4726bbed7748f15] Merge tag 'pwm/for-6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm testing commit ace1ba1c9038b30f29c5759bc4726bbed7748f15 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: f3864cfc04a4da98e91814fa2bbab21ea84da11333841bd55e58bc72302e279d all runs: OK false negative chance: 0.000 # git bisect good ace1ba1c9038b30f29c5759bc4726bbed7748f15 Bisecting: 775 revisions left to test after this (roughly 10 steps) [b1983d427a53911ea71ba621d4bf994ae22b1536] Merge tag 'net-6.5-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net testing commit b1983d427a53911ea71ba621d4bf994ae22b1536 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: dc9c7b6a1b40346fc8b29e1c2a6577f1cd38ea906bdaae35632f916ebf2071bd all runs: OK false negative chance: 0.000 # git bisect good b1983d427a53911ea71ba621d4bf994ae22b1536 Bisecting: 434 revisions left to test after this (roughly 9 steps) [57f1f9dd3abea322173ea75a15887ccf14bbbe51] Merge tag 'net-6.5-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net testing commit 57f1f9dd3abea322173ea75a15887ccf14bbbe51 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: acd02d9c361576a4939de6fd50af2ca8587391bba92618ceff2b2ffce35d1104 all runs: OK false negative chance: 0.000 # git bisect good 57f1f9dd3abea322173ea75a15887ccf14bbbe51 Bisecting: 217 revisions left to test after this (roughly 8 steps) [edbc16c43b271e2c07cb922c60af5110cd0cc2b9] selftests: mptcp: connect: don't stop if error testing commit edbc16c43b271e2c07cb922c60af5110cd0cc2b9 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 5536481101ff157f1fc2407e39db1cd8bedfeffaac24a50230e1e08353c727c5 all runs: OK false negative chance: 0.000 # git bisect good edbc16c43b271e2c07cb922c60af5110cd0cc2b9 Bisecting: 108 revisions left to test after this (roughly 7 steps) [fea2993aecd74d5d11ede1ebbd60e478ebfed996] eth: bnxt: move and rename reset helpers testing commit fea2993aecd74d5d11ede1ebbd60e478ebfed996 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 7e8b9cb0954e61c03de1d68566c34eb2cf4d1097876178410ab13d9f7076e8a3 all runs: OK false negative chance: 0.000 # git bisect good fea2993aecd74d5d11ede1ebbd60e478ebfed996 Bisecting: 54 revisions left to test after this (roughly 6 steps) [0de38d9f1dba2336f84799824af08263fc407dd1] ionic: extract common bits from ionic_probe testing commit 0de38d9f1dba2336f84799824af08263fc407dd1 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ab8f04f217ded0c6b8e1e9952724588e44abe9f140d69649fea33489b6325183 all runs: OK false negative chance: 0.000 # git bisect good 0de38d9f1dba2336f84799824af08263fc407dd1 Bisecting: 27 revisions left to test after this (roughly 5 steps) [a5d0c26a2784890d803fca5e0dd27c590472b43d] selftests/bpf: Add a cpuv4 test runner for cpu=v4 testing testing commit a5d0c26a2784890d803fca5e0dd27c590472b43d gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: edd2fdf480cf27e56417f5ef85129ab68718a1b4bf86cc1c6ba921604e27d098 all runs: crashed: BUG: unable to handle kernel paging request in strnchr representative crash: BUG: unable to handle kernel paging request in strnchr, types: [UNKNOWN] # git bisect bad a5d0c26a2784890d803fca5e0dd27c590472b43d Bisecting: 12 revisions left to test after this (roughly 4 steps) [36397a189513c8bf9736d07360238a09a4694b90] Merge branch 'Add SO_REUSEPORT support for TC bpf_sk_assign' testing commit 36397a189513c8bf9736d07360238a09a4694b90 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6abf855f73d094f080f526d8a696902f5c970868cdd39e6720042265ac4e80aa all runs: OK false negative chance: 0.000 # git bisect good 36397a189513c8bf9736d07360238a09a4694b90 Bisecting: 6 revisions left to test after this (roughly 3 steps) [1f1e864b65554e33fe74e3377e58b12f4302f2eb] bpf: Handle sign-extenstin ctx member accesses testing commit 1f1e864b65554e33fe74e3377e58b12f4302f2eb gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: bbf0828ef6ecf1b8c33b08e054771648929c9d89fb382f568f8e7b4b0b08de3c all runs: crashed: BUG: unable to handle kernel paging request in strnchr representative crash: BUG: unable to handle kernel paging request in strnchr, types: [UNKNOWN] # git bisect bad 1f1e864b65554e33fe74e3377e58b12f4302f2eb Bisecting: 2 revisions left to test after this (roughly 2 steps) [10d78a66a5f29fbbde1b09b5139c17c436b08c6e] bpf, docs: fix BPF_NEG entry in instruction-set.rst testing commit 10d78a66a5f29fbbde1b09b5139c17c436b08c6e gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ad67b79a617c50b01137a645453f4df5e813244dfda6494aba0640583f8544b7 all runs: OK false negative chance: 0.000 # git bisect good 10d78a66a5f29fbbde1b09b5139c17c436b08c6e Bisecting: 0 revisions left to test after this (roughly 1 step) [8100928c881482a73ed8bd499d602bab0fe55608] bpf: Support new sign-extension mov insns testing commit 8100928c881482a73ed8bd499d602bab0fe55608 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a423e176f4f7982a73e568ab22df6dc13f6b6625636b8e85ec55066dedc64b68 all runs: crashed: BUG: unable to handle kernel paging request in strnchr representative crash: BUG: unable to handle kernel paging request in strnchr, types: [UNKNOWN] # git bisect bad 8100928c881482a73ed8bd499d602bab0fe55608 Bisecting: 0 revisions left to test after this (roughly 0 steps) [1f9a1ea821ff25353a0e80d971e7958cd55b47a3] bpf: Support new sign-extension load insns testing commit 1f9a1ea821ff25353a0e80d971e7958cd55b47a3 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 09b6636e810aeb4c691d714d5d42d5f734a16d1f6bf04a21b67d9af8cf74906d all runs: OK false negative chance: 0.000 # git bisect good 1f9a1ea821ff25353a0e80d971e7958cd55b47a3 8100928c881482a73ed8bd499d602bab0fe55608 is the first bad commit commit 8100928c881482a73ed8bd499d602bab0fe55608 Author: Yonghong Song Date: Thu Jul 27 18:12:02 2023 -0700 bpf: Support new sign-extension mov insns Add interpreter/jit support for new sign-extension mov insns. The original 'MOV' insn is extended to support reg-to-reg signed version for both ALU and ALU64 operations. For ALU mode, the insn->off value of 8 or 16 indicates sign-extension from 8- or 16-bit value to 32-bit value. For ALU64 mode, the insn->off value of 8/16/32 indicates sign-extension from 8-, 16- or 32-bit value to 64-bit value. Acked-by: Eduard Zingerman Signed-off-by: Yonghong Song Link: https://lore.kernel.org/r/20230728011202.3712300-1-yonghong.song@linux.dev Signed-off-by: Alexei Starovoitov arch/x86/net/bpf_jit_comp.c | 43 +++++++++++- kernel/bpf/core.c | 28 +++++++- kernel/bpf/verifier.c | 157 ++++++++++++++++++++++++++++++++++++-------- 3 files changed, 197 insertions(+), 31 deletions(-) accumulated error probability: 0.00 culprit signature: a423e176f4f7982a73e568ab22df6dc13f6b6625636b8e85ec55066dedc64b68 parent signature: 09b6636e810aeb4c691d714d5d42d5f734a16d1f6bf04a21b67d9af8cf74906d revisions tested: 22, total time: 3h57m39.070062135s (build: 1h26m49.633180319s, test: 2h19m10.032442082s) first bad commit: 8100928c881482a73ed8bd499d602bab0fe55608 bpf: Support new sign-extension mov insns recipients (to): ["ast@kernel.org" "eddyz87@gmail.com" "yonghong.song@linux.dev"] recipients (cc): [] crash: BUG: unable to handle kernel paging request in strnchr BUG: unable to handle page fault for address: 0000000000003d50 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 0 P4D 0 Oops: 0000 [#1] PREEMPT SMP CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.5.0-rc2-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023 RIP: 0010:strnchr+0x9/0x30 lib/string.c:403 Code: 00 f3 0f 1e fa 31 d2 0f b6 07 40 38 c6 48 0f 44 d7 48 83 c7 01 84 c0 75 ee 48 89 d0 c3 0f 1f 40 00 f3 0f 1e fa 48 01 fe eb 0f <0f> b6 07 38 d0 74 10 48 83 c7 01 84 c0 74 05 48 39 f7 75 ec 31 c0 RSP: 0018:ffffffff82e03c40 EFLAGS: 00010093 RAX: 0000000000000000 RBX: ffffffff82e03cd0 RCX: 0000000000000003 RDX: 0000000000000000 RSI: 0000000000003d53 RDI: 0000000000003d50 RBP: 0000000000003d50 R08: ffffffff82e03cd0 R09: 0000000000000000 R10: 0000000000080000 R11: 0000000000000000 R12: 0000000000000000 R13: 000000000002ed40 R14: 0000000000000003 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000003d50 CR3: 000000010f3c8000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: bpf_bprintf_prepare+0x34b/0x710 kernel/bpf/helpers.c:823 ____bpf_trace_printk kernel/trace/bpf_trace.c:385 [inline] bpf_trace_printk+0x63/0x110 kernel/trace/bpf_trace.c:375 ___bpf_prog_run+0x108d/0x2360 kernel/bpf/core.c:1858 __bpf_prog_run32+0x65/0x90 kernel/bpf/core.c:2094 bpf_dispatcher_nop_func include/linux/bpf.h:1180 [inline] __bpf_prog_run include/linux/filter.h:603 [inline] bpf_prog_run include/linux/filter.h:610 [inline] __bpf_trace_run kernel/trace/bpf_trace.c:2269 [inline] bpf_trace_run1+0x6a/0xf0 kernel/trace/bpf_trace.c:2307 trace_rcu_utilization include/trace/events/rcu.h:27 [inline] rcu_note_context_switch+0x324/0x570 kernel/rcu/tree_plugin.h:318 __schedule+0xa2/0xa10 kernel/sched/core.c:6610 schedule_idle+0x15/0x20 kernel/sched/core.c:6814 cpu_startup_entry+0x18/0x20 kernel/sched/idle.c:379 rest_init+0xf1/0x100 init/main.c:726 arch_call_rest_init+0x9/0x20 init/main.c:823 start_kernel+0x4ea/0x550 init/main.c:1068 x86_64_start_reservations+0x18/0x30 arch/x86/kernel/head64.c:556 x86_64_start_kernel+0xad/0xc0 arch/x86/kernel/head64.c:537 secondary_startup_64_no_verify+0x167/0x16b Modules linked in: CR2: 0000000000003d50 ---[ end trace 0000000000000000 ]--- RIP: 0010:strnchr+0x9/0x30 lib/string.c:403 Code: 00 f3 0f 1e fa 31 d2 0f b6 07 40 38 c6 48 0f 44 d7 48 83 c7 01 84 c0 75 ee 48 89 d0 c3 0f 1f 40 00 f3 0f 1e fa 48 01 fe eb 0f <0f> b6 07 38 d0 74 10 48 83 c7 01 84 c0 74 05 48 39 f7 75 ec 31 c0 RSP: 0018:ffffffff82e03c40 EFLAGS: 00010093 RAX: 0000000000000000 RBX: ffffffff82e03cd0 RCX: 0000000000000003 RDX: 0000000000000000 RSI: 0000000000003d53 RDI: 0000000000003d50 RBP: 0000000000003d50 R08: ffffffff82e03cd0 R09: 0000000000000000 R10: 0000000000080000 R11: 0000000000000000 R12: 0000000000000000 R13: 000000000002ed40 R14: 0000000000000003 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000003d50 CR3: 000000010f3c8000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 00 f3 add %dh,%bl 2: 0f 1e fa nop %edx 5: 31 d2 xor %edx,%edx 7: 0f b6 07 movzbl (%rdi),%eax a: 40 38 c6 cmp %al,%sil d: 48 0f 44 d7 cmove %rdi,%rdx 11: 48 83 c7 01 add $0x1,%rdi 15: 84 c0 test %al,%al 17: 75 ee jne 0x7 19: 48 89 d0 mov %rdx,%rax 1c: c3 ret 1d: 0f 1f 40 00 nopl 0x0(%rax) 21: f3 0f 1e fa endbr64 25: 48 01 fe add %rdi,%rsi 28: eb 0f jmp 0x39 * 2a: 0f b6 07 movzbl (%rdi),%eax <-- trapping instruction 2d: 38 d0 cmp %dl,%al 2f: 74 10 je 0x41 31: 48 83 c7 01 add $0x1,%rdi 35: 84 c0 test %al,%al 37: 74 05 je 0x3e 39: 48 39 f7 cmp %rsi,%rdi 3c: 75 ec jne 0x2a 3e: 31 c0 xor %eax,%eax