ci starts bisection 2024-03-07 14:02:53.678331151 +0000 UTC m=+113.587481179 bisecting cause commit starting from e63985ecd22681c7f5975f2e8637187a326b6791 building syzkaller on f39a7eed7e2634a9f836f1922833d4b4d5b0f770 ensuring issue is reproducible on original commit e63985ecd22681c7f5975f2e8637187a326b6791 testing commit e63985ecd22681c7f5975f2e8637187a326b6791 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 45fec577b66256d8de12176a41587a74acccb621c32a4182984fbc746e6fc0f1 all runs: crashed: KASAN: slab-out-of-bounds Read in btf_datasec_check_meta representative crash: KASAN: slab-out-of-bounds Read in btf_datasec_check_meta, types: [KASAN] check whether we can drop unnecessary instrumentation disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed testing commit e63985ecd22681c7f5975f2e8637187a326b6791 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 5a291f159bf29f0305c3e5c12a3f93ed9abc6fe159d8b6a2b2666e71213e9787 all runs: crashed: KASAN: slab-out-of-bounds Read in btf_datasec_check_meta representative crash: KASAN: slab-out-of-bounds Read in btf_datasec_check_meta, types: [KASAN] the bug reproduces without the instrumentation disabling configs for [UBSAN BUG LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed kconfig minimization: base=3937 full=7970 leaves diff=2020 split chunks (needed=false): <2020> split chunk #0 of len 2020 into 5 parts testing without sub-chunk 1/5 disabling configs for [LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP HANG], they are not needed testing commit e63985ecd22681c7f5975f2e8637187a326b6791 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 4e05485d01dbd31358e4ac91a642e291e2eac7f819d6adf69947aef48ceb40c5 all runs: crashed: KASAN: slab-out-of-bounds Read in btf_datasec_check_meta representative crash: KASAN: slab-out-of-bounds Read in btf_datasec_check_meta, types: [KASAN] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN BUG LOCKDEP], they are not needed testing commit e63985ecd22681c7f5975f2e8637187a326b6791 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 08d84aae0cb3a0ea1e93488249f7f2bd63c5bad841cf3ea878ad186ef63f8e19 all runs: crashed: KASAN: slab-out-of-bounds Read in btf_datasec_check_meta representative crash: KASAN: slab-out-of-bounds Read in btf_datasec_check_meta, types: [KASAN] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [HANG LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP], they are not needed testing commit e63985ecd22681c7f5975f2e8637187a326b6791 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 2b91e33036145de3821638bfcd29519a45b4f234e7e64496d64d5f608fa7203b all runs: crashed: KASAN: slab-out-of-bounds Read in btf_datasec_check_meta representative crash: KASAN: slab-out-of-bounds Read in btf_datasec_check_meta, types: [KASAN] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed testing commit e63985ecd22681c7f5975f2e8637187a326b6791 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 27969101f1f471b9cf800cfbc63af96a04ec469c277908cd48bf7a3ae88a7af9 all runs: crashed: KASAN: slab-out-of-bounds Read in btf_datasec_check_meta representative crash: KASAN: slab-out-of-bounds Read in btf_datasec_check_meta, types: [KASAN] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed testing commit e63985ecd22681c7f5975f2e8637187a326b6791 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 2280f07616c56c0a2cbcfb3f14b4824ff967bee4c8be5331a7b77fc78b4a97f8 all runs: OK false negative chance: 0.000 minimized to 404 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_ACM USB_CONFIGFS_ECM USB_CONFIGFS_ECM_SUBSET USB_CONFIGFS_EEM USB_CONFIGFS_F_FS USB_CONFIGFS_F_HID 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_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_DEVICE_CDEV VFIO_PCI VFIO_PCI_CORE VFIO_PCI_INTX VFIO_PCI_MMAP VFIO_VIRQFD VGASTATE VHOST VHOST_CROSS_ENDIAN_LEGACY VHOST_IOTLB VHOST_NET VHOST_RING VHOST_TASK VHOST_VDPA VHOST_VSOCK 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_USER_SHADOW_STACK X86_X2APIC X86_X32_ABI XDP_SOCKETS XDP_SOCKETS_DIAG XFRM_ESPINTCP XFRM_INTERFACE XFRM_IPCOMP XFRM_MIGRATE XFRM_OFFLOAD XFRM_STATISTICS XFRM_SUB_POLICY XFRM_USER_COMPAT XFS_FS XFS_POSIX_ACL XFS_QUOTA XFS_RT XOR_BLOCKS YENTA YENTA_ENE_TUNE YENTA_O2 YENTA_RICOH YENTA_TI YENTA_TOSHIBA ZEROPLUS_FF ZLIB_DEFLATE ZONEFS_FS ZPOOL ZRAM ZRAM_DEF_COMP_LZORLE ZSMALLOC ZSTD_COMPRESS ZSWAP ZSWAP_COMPRESSOR_DEFAULT_LZO ZSWAP_DEFAULT_ON ZSWAP_SHRINKER_DEFAULT_ON ZSWAP_ZPOOL_DEFAULT_ZSMALLOC] disabling configs for [LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP HANG], they are not needed picked [v6.7 v6.6 v6.5 v6.3 v6.1 v5.19 v5.17 v5.15 v5.12 v5.9 v5.6 v5.3 v5.0 v4.19] out of 30 release tags testing release v6.7 testing commit 0dd3ee31125508cd67f7e7172247f05b7fd1753a gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: f3a62e2fdefb914676a0956ce123370495d1eda8aba07d92cefc842ea2a82cfa all runs: OK false negative chance: 0.000 # git bisect start e63985ecd22681c7f5975f2e8637187a326b6791 0dd3ee31125508cd67f7e7172247f05b7fd1753a Bisecting: 8387 revisions left to test after this (roughly 13 steps) [cf65598d5909acf5e7b7dc9e21786e386356bc81] Merge tag 'drm-next-2024-01-10' of git://anongit.freedesktop.org/drm/drm testing commit cf65598d5909acf5e7b7dc9e21786e386356bc81 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c0ab736915e61c70e3b68e3d0ea953cce70b37272445af5807191c4c96fd81c9 all runs: OK false negative chance: 0.000 # git bisect good cf65598d5909acf5e7b7dc9e21786e386356bc81 Bisecting: 4195 revisions left to test after this (roughly 12 steps) [b1737ad4406a35f20eaae0e8079cc6ca6447e83a] Merge tag 'fbdev-for-6.8-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev testing commit b1737ad4406a35f20eaae0e8079cc6ca6447e83a gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 4043027115a712faa8281d9c21470296d5276c90708ca8ab1516e0a2421f5c2c all runs: OK false negative chance: 0.000 # git bisect good b1737ad4406a35f20eaae0e8079cc6ca6447e83a Bisecting: 2101 revisions left to test after this (roughly 11 steps) [e7768e65cd777182553b98f5b4eaffb624974976] Merge tag 'for-6.8/dm-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm testing commit e7768e65cd777182553b98f5b4eaffb624974976 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d35948bd598d2391bf11f8a1e35c6a12014a4aa132df9aa46a80db504ba1aeeb all runs: OK false negative chance: 0.000 # git bisect good e7768e65cd777182553b98f5b4eaffb624974976 Bisecting: 1182 revisions left to test after this (roughly 10 steps) [26f4dac11775a1ca24e2605cb30e828d4dbdea93] netfilter: x_tables: Use unsafe_memcpy() for 0-sized destination testing commit 26f4dac11775a1ca24e2605cb30e828d4dbdea93 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d0052c21a68be45aa54103437387b14b93e43e7b4e3b1ebb5b8aa76f4b465fa5 run #0: OK run #1: OK run #2: OK run #3: OK run #4: failed: failed to run command in VM: broken console: Permission denied (publickey) run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK false negative chance: 0.000 # git bisect good 26f4dac11775a1ca24e2605cb30e828d4dbdea93 Bisecting: 590 revisions left to test after this (roughly 9 steps) [d4beef418c8be893674d747a791923322f4aab20] Merge branch 'dsa-realtek-reset' testing commit d4beef418c8be893674d747a791923322f4aab20 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 638cea59743b5d1fad876d6d2d865c95c8faf6276375dfd2c1101fc92776a059 all runs: OK false negative chance: 0.000 # git bisect good d4beef418c8be893674d747a791923322f4aab20 Bisecting: 291 revisions left to test after this (roughly 8 steps) [87adedeba51a822533649b143232418b9e26d08b] Merge tag 'net-6.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net testing commit 87adedeba51a822533649b143232418b9e26d08b gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ff4fc5ac081e2050492d117d11f20967138a738de70ec0e733c9b1f87b167a70 all runs: OK false negative chance: 0.000 # git bisect good 87adedeba51a822533649b143232418b9e26d08b Bisecting: 155 revisions left to test after this (roughly 7 steps) [0270d69121ba7fbc449a386f989b9b7b5eaebde3] Merge branch 'create-shadow-types-for-struct_ops-maps-in-skeletons' testing commit 0270d69121ba7fbc449a386f989b9b7b5eaebde3 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 22ad4209235a1580e06d4d8794f9918a0970cdb1dd3beee079d147b3efa33258 all runs: OK false negative chance: 0.000 # git bisect good 0270d69121ba7fbc449a386f989b9b7b5eaebde3 Bisecting: 77 revisions left to test after this (roughly 6 steps) [a8fbd4d90720b6c930661ed593d54aba77cec3c2] ipv6: annotate data-races around devconf->proxy_ndp testing commit a8fbd4d90720b6c930661ed593d54aba77cec3c2 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6f1bc583084636677ef0286f23bd33843e9c0728bb8575c1dc974bb8a54753eb all runs: OK false negative chance: 0.000 # git bisect good a8fbd4d90720b6c930661ed593d54aba77cec3c2 Bisecting: 38 revisions left to test after this (roughly 5 steps) [9f6fa3c4e722cbb9a007c3b85797bebfcdee84e9] inet: annotate data-races around ifa->ifa_preferred_lft testing commit 9f6fa3c4e722cbb9a007c3b85797bebfcdee84e9 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6db1c2099f92a210ae78373d2004e2656ea06c221fc51b201982ed7b8d191737 all runs: OK false negative chance: 0.000 # git bisect good 9f6fa3c4e722cbb9a007c3b85797bebfcdee84e9 Bisecting: 19 revisions left to test after this (roughly 4 steps) [4f81c16f50baf6d5d8bfa6eef3250dcfa22cbc08] bpf: Recognize that two registers are safe when their ranges match testing commit 4f81c16f50baf6d5d8bfa6eef3250dcfa22cbc08 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 3907b0874d839c1d8a81682ba6bf007d324645ae3a7c590bbad5f50c8325094f all runs: OK false negative chance: 0.000 # git bisect good 4f81c16f50baf6d5d8bfa6eef3250dcfa22cbc08 Bisecting: 9 revisions left to test after this (roughly 3 steps) [1863acccdf936c6917398165ca97e252d02fa6dd] selftests/bpf: Test autocreate behavior for struct_ops maps testing commit 1863acccdf936c6917398165ca97e252d02fa6dd gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d1e09521547833b2699b8a7a80c9fe7f4565581065d2c151c05b13c745424a63 all runs: OK false negative chance: 0.000 # git bisect good 1863acccdf936c6917398165ca97e252d02fa6dd Bisecting: 4 revisions left to test after this (roughly 2 steps) [6ebaa3fb88bbe4c33a0e01ce27007e1dd4fd133c] libbpf: Rewrite btf datasec names starting from '?' testing commit 6ebaa3fb88bbe4c33a0e01ce27007e1dd4fd133c gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: f13ee53d4419e40355ca16c75fbafc851c38b817dfee92f6fe21998196ed5a4e all runs: OK false negative chance: 0.000 # git bisect good 6ebaa3fb88bbe4c33a0e01ce27007e1dd4fd133c Bisecting: 2 revisions left to test after this (roughly 1 step) [bd70a8fb7ca4fcb078086f4d96b048aaf1aa4786] bpf: Allow all printable characters in BTF DATASEC names testing commit bd70a8fb7ca4fcb078086f4d96b048aaf1aa4786 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6fce5089809f35f9501332ff30f797af4572f29c2ce93e93c089281f78b4d281 all runs: crashed: KASAN: slab-out-of-bounds Read in btf_datasec_check_meta representative crash: KASAN: slab-out-of-bounds Read in btf_datasec_check_meta, types: [KASAN] # git bisect bad bd70a8fb7ca4fcb078086f4d96b048aaf1aa4786 Bisecting: 0 revisions left to test after this (roughly 0 steps) [733e5e875444fc5afc9b72714f0ecaca629ccf8a] selftests/bpf: Test case for SEC("?.struct_ops") testing commit 733e5e875444fc5afc9b72714f0ecaca629ccf8a gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 04c3296fb0bd8540340ce6fe3135febe558bfcea55fb4fd7c8eea427ba4faeb2 all runs: OK false negative chance: 0.000 # git bisect good 733e5e875444fc5afc9b72714f0ecaca629ccf8a bd70a8fb7ca4fcb078086f4d96b048aaf1aa4786 is the first bad commit commit bd70a8fb7ca4fcb078086f4d96b048aaf1aa4786 Author: Eduard Zingerman Date: Wed Mar 6 12:45:28 2024 +0200 bpf: Allow all printable characters in BTF DATASEC names The intent is to allow libbpf to use SEC("?.struct_ops") to identify struct_ops maps that are optional, e.g. like in the following BPF code: SEC("?.struct_ops") struct test_ops optional_map = { ... }; Which yields the following BTF: ... [13] DATASEC '?.struct_ops' size=0 vlen=... ... To load such BTF libbpf rewrites DATASEC name before load. After this patch the rewrite won't be necessary. Signed-off-by: Eduard Zingerman Signed-off-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/20240306104529.6453-15-eddyz87@gmail.com kernel/bpf/btf.c | 16 +++++++++++++++- 1 file changed, 15 insertions(+), 1 deletion(-) accumulated error probability: 0.00 culprit signature: 6fce5089809f35f9501332ff30f797af4572f29c2ce93e93c089281f78b4d281 parent signature: 04c3296fb0bd8540340ce6fe3135febe558bfcea55fb4fd7c8eea427ba4faeb2 revisions tested: 22, total time: 8h8m57.879574396s (build: 4h37m1.85631909s, test: 2h42m50.160352605s) first bad commit: bd70a8fb7ca4fcb078086f4d96b048aaf1aa4786 bpf: Allow all printable characters in BTF DATASEC names recipients (to): ["andrii@kernel.org" "bpf@vger.kernel.org" "eddyz87@gmail.com" "martin.lau@linux.dev"] recipients (cc): ["andrii@kernel.org" "ast@kernel.org" "daniel@iogearbox.net" "haoluo@google.com" "john.fastabend@gmail.com" "jolsa@kernel.org" "kpsingh@kernel.org" "linux-kernel@vger.kernel.org" "sdf@google.com" "song@kernel.org" "yonghong.song@linux.dev"] crash: KASAN: slab-out-of-bounds Read in btf_datasec_check_meta ================================================================== BUG: KASAN: slab-out-of-bounds in btf_name_valid_section kernel/bpf/btf.c:822 [inline] BUG: KASAN: slab-out-of-bounds in btf_datasec_check_meta+0x250/0x960 kernel/bpf/btf.c:4564 Read of size 1 at addr ffff888117133e37 by task syz-executor.0/2804 CPU: 1 PID: 2804 Comm: syz-executor.0 Not tainted 6.8.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xf8/0x260 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:377 [inline] print_report+0x167/0x540 mm/kasan/report.c:488 kasan_report+0x142/0x180 mm/kasan/report.c:601 btf_name_valid_section kernel/bpf/btf.c:822 [inline] btf_datasec_check_meta+0x250/0x960 kernel/bpf/btf.c:4564 btf_check_meta kernel/bpf/btf.c:5046 [inline] btf_check_all_metas+0x2e9/0x9e0 kernel/bpf/btf.c:5070 btf_parse_type_sec+0x119/0x1470 kernel/bpf/btf.c:5206 btf_parse kernel/bpf/btf.c:5598 [inline] btf_new_fd+0x3b7/0x930 kernel/bpf/btf.c:7450 __sys_bpf+0x5ab/0x650 kernel/bpf/syscall.c:5618 __do_sys_bpf kernel/bpf/syscall.c:5680 [inline] __se_sys_bpf kernel/bpf/syscall.c:5678 [inline] __x64_sys_bpf+0x77/0x90 kernel/bpf/syscall.c:5678 do_syscall_64+0x94/0x1a0 entry_SYSCALL_64_after_hwframe+0x6f/0x77 RIP: 0033:0x7f4fd6c8bda9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f4fd680d0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007f4fd6db9f80 RCX: 00007f4fd6c8bda9 RDX: 0000000000000020 RSI: 0000000020000300 RDI: 0000000000000012 RBP: 00007f4fd6cd847a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f4fd6db9f80 R15: 00007ffe42692a68 Allocated by task 2804: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 poison_kmalloc_redzone mm/kasan/common.c:370 [inline] __kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:387 kasan_kmalloc include/linux/kasan.h:211 [inline] __do_kmalloc_node mm/slub.c:3981 [inline] __kmalloc_node+0x22f/0x4c0 mm/slub.c:3988 kmalloc_node include/linux/slab.h:610 [inline] kvmalloc_node+0x42/0xf0 mm/util.c:617 kvmalloc include/linux/slab.h:728 [inline] btf_parse kernel/bpf/btf.c:5574 [inline] btf_new_fd+0x250/0x930 kernel/bpf/btf.c:7450 __sys_bpf+0x5ab/0x650 kernel/bpf/syscall.c:5618 __do_sys_bpf kernel/bpf/syscall.c:5680 [inline] __se_sys_bpf kernel/bpf/syscall.c:5678 [inline] __x64_sys_bpf+0x77/0x90 kernel/bpf/syscall.c:5678 do_syscall_64+0x94/0x1a0 entry_SYSCALL_64_after_hwframe+0x6f/0x77 The buggy address belongs to the object at ffff888117133e00 which belongs to the cache kmalloc-64 of size 64 The buggy address is located 0 bytes to the right of allocated 55-byte region [ffff888117133e00, ffff888117133e37) The buggy address belongs to the physical page: page:ffffea00045c4cc0 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x117133 anon flags: 0x200000000000800(slab|node=0|zone=2) page_type: 0xffffffff() raw: 0200000000000800 ffff888100041640 ffffea0004582a40 dead000000000003 raw: 0000000000000000 0000000080200020 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x12cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY), pid 1947, tgid 1947 (udevadm), ts 6313674445, free_ts 5444134392 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x10f/0x130 mm/page_alloc.c:1533 prep_new_page mm/page_alloc.c:1540 [inline] get_page_from_freelist+0x33de/0x3580 mm/page_alloc.c:3311 __alloc_pages+0x255/0x650 mm/page_alloc.c:4567 __alloc_pages_node include/linux/gfp.h:238 [inline] alloc_pages_node include/linux/gfp.h:261 [inline] alloc_slab_page+0x5f/0x160 mm/slub.c:2190 allocate_slab mm/slub.c:2354 [inline] new_slab+0x70/0x270 mm/slub.c:2407 ___slab_alloc+0xa79/0x10b0 mm/slub.c:3540 __slab_alloc mm/slub.c:3625 [inline] __slab_alloc_node mm/slub.c:3678 [inline] slab_alloc_node mm/slub.c:3850 [inline] __do_kmalloc_node mm/slub.c:3980 [inline] __kmalloc+0x2ba/0x480 mm/slub.c:3994 kmalloc include/linux/slab.h:594 [inline] kzalloc include/linux/slab.h:711 [inline] kobject_get_path+0x9b/0x1d0 lib/kobject.c:161 kobject_uevent_env+0x2bd/0x6b0 lib/kobject_uevent.c:529 kobject_synth_uevent+0x772/0x910 lib/kobject_uevent.c:208 uevent_store+0x46/0x60 drivers/base/bus.c:633 kernfs_fop_write_iter+0x2f2/0x440 fs/kernfs/file.c:334 call_write_iter include/linux/fs.h:2087 [inline] new_sync_write fs/read_write.c:497 [inline] vfs_write+0xa56/0xe10 fs/read_write.c:590 ksys_write+0x163/0x250 fs/read_write.c:643 do_syscall_64+0x94/0x1a0 entry_SYSCALL_64_after_hwframe+0x6f/0x77 page last free pid 1 tgid 1 stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1140 [inline] free_unref_page_prepare+0x87f/0x9a0 mm/page_alloc.c:2346 free_unref_page+0x37/0x3a0 mm/page_alloc.c:2486 kasan_depopulate_vmalloc_pte+0x74/0x90 mm/kasan/shadow.c:415 apply_to_pte_range mm/memory.c:2619 [inline] apply_to_pmd_range mm/memory.c:2663 [inline] apply_to_pud_range mm/memory.c:2699 [inline] apply_to_p4d_range mm/memory.c:2735 [inline] __apply_to_page_range+0x770/0x8e0 mm/memory.c:2769 kasan_release_vmalloc+0x9a/0xb0 mm/kasan/shadow.c:532 __purge_vmap_area_lazy+0x1324/0x1550 mm/vmalloc.c:1835 _vm_unmap_aliases+0x6aa/0x730 mm/vmalloc.c:2371 change_page_attr_set_clr+0x209/0xcf0 arch/x86/mm/pat/set_memory.c:1838 change_page_attr_set arch/x86/mm/pat/set_memory.c:1879 [inline] set_memory_nx+0xcf/0x110 arch/x86/mm/pat/set_memory.c:2072 free_init_pages arch/x86/mm/init.c:927 [inline] free_kernel_image_pages arch/x86/mm/init.c:946 [inline] free_initmem+0x83/0xf0 arch/x86/mm/init.c:973 kernel_init+0x2c/0x1a0 init/main.c:1450 ret_from_fork+0x32/0x60 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:243 Memory state around the buggy address: ffff888117133d00: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ffff888117133d80: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc >ffff888117133e00: 00 00 00 00 00 00 07 fc fc fc fc fc fc fc fc fc ^ ffff888117133e80: 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fc fc ffff888117133f00: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ==================================================================