ci starts bisection 2025-09-10 06:26:53.714573958 +0000 UTC m=+32260.324735539 bisecting cause commit starting from f3883b1ea5a8f31df4eba1c2cb5196e3a249a09e building syzkaller on d291dd2d58a1885c00a60561048b6ceb1bf1206a ensuring issue is reproducible on original commit f3883b1ea5a8f31df4eba1c2cb5196e3a249a09e testing commit f3883b1ea5a8f31df4eba1c2cb5196e3a249a09e gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 1c2f4d4458046b9a40a04090710f5318eb877af74c92706885139f2ac4b44ae7 all runs: crashed: KASAN: slab-use-after-free Read in napi_gro_frags representative crash: KASAN: slab-use-after-free Read in napi_gro_frags, types: [KASAN-USE-AFTER-FREE-READ] check whether we can drop unnecessary instrumentation disabling configs for [bug_or_warning locking atomic_sleep hang memleak ubsan], they are not needed testing commit f3883b1ea5a8f31df4eba1c2cb5196e3a249a09e gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 8c27bfcdc153f2f6100fc2f8b86e99ff2f75c0ded2b7c2a7c764e2b53ca49985 all runs: crashed: KASAN: slab-use-after-free Read in napi_gro_frags representative crash: KASAN: slab-use-after-free Read in napi_gro_frags, types: [KASAN-USE-AFTER-FREE-READ] the bug reproduces without the instrumentation disabling configs for [bug_or_warning locking atomic_sleep hang memleak ubsan], they are not needed kconfig minimization: base=4099 full=8507 leaves diff=2191 split chunks (needed=false): <2191> split chunk #0 of len 2191 into 5 parts testing without sub-chunk 1/5 disabling configs for [bug_or_warning locking atomic_sleep hang memleak ubsan], they are not needed testing commit f3883b1ea5a8f31df4eba1c2cb5196e3a249a09e gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: e6d12077fea8c9c52c5597348dd4a8fea2a8becabc5b96c5077142cfcbf1a17b all runs: crashed: KASAN: slab-use-after-free Read in napi_gro_frags representative crash: KASAN: slab-use-after-free Read in napi_gro_frags, types: [KASAN-USE-AFTER-FREE-READ] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [ubsan bug_or_warning locking atomic_sleep hang memleak], they are not needed testing commit f3883b1ea5a8f31df4eba1c2cb5196e3a249a09e gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 417a9e127f8e3af56f267da0e18344b9824a781073ddcb1a06842d250f84cd02 all runs: crashed: KASAN: slab-use-after-free Read in napi_gro_frags representative crash: KASAN: slab-use-after-free Read in napi_gro_frags, types: [KASAN-USE-AFTER-FREE-READ] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [memleak ubsan bug_or_warning locking atomic_sleep hang], they are not needed testing commit f3883b1ea5a8f31df4eba1c2cb5196e3a249a09e gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 86a8f2962a472aab4983deb2ddd3c07f4b6e6273c2487430cefe702c81f0d1d9 all runs: crashed: KASAN: slab-use-after-free Read in napi_gro_frags representative crash: KASAN: slab-use-after-free Read in napi_gro_frags, types: [KASAN-USE-AFTER-FREE-READ] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [locking atomic_sleep hang memleak ubsan bug_or_warning], they are not needed testing commit f3883b1ea5a8f31df4eba1c2cb5196e3a249a09e gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 96dc4363915bda95445ef6de00adc8c3cf4e36d6a17084b4571d88dd7393d343 all runs: crashed: KASAN: slab-use-after-free Read in napi_gro_frags representative crash: KASAN: slab-use-after-free Read in napi_gro_frags, types: [KASAN-USE-AFTER-FREE-READ] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [hang memleak ubsan bug_or_warning locking atomic_sleep], they are not needed testing commit f3883b1ea5a8f31df4eba1c2cb5196e3a249a09e gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 2bfd850938833c1162d90417755c7a2761512953e089d858974672ec5261cae6 all runs: OK false negative chance: 0.000 minimized to 435 configs; suspects: [ARCH_ENABLE_MEMORY_HOTREMOVE ATM BCMA BLK_DEV_ZONED BPF_SYSCALL CARDBUS CFG80211 CFG80211_WEXT CMA COMMON_CLK CONTIG_ALLOC DVB_CORE EXTCON 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 NOP_USB_XCEIV PARPORT PCCARD PCMCIA PHONET RADIO_ADAPTERS RADIO_SI470X RADIO_SI4713 RC_CORE RFKILL SND SOUND SPI SSB TAP TARGET_CORE TUN USB_ADUTUX USB_AIRSPY USB_ALI_M5632 USB_AMD5536UDC USB_AN2720 USB_APPLEDISPLAY USB_ARMLINUX USB_ATM USB_BDC_UDC USB_BELKIN USB_C67X00_HCD USB_CATC USB_CDC_PHONET USB_CDNS2_UDC USB_CDNS3 USB_CDNS3_GADGET USB_CDNS3_HOST USB_CDNS3_PCI_WRAP USB_CDNSP_GADGET USB_CDNSP_HOST USB_CDNSP_PCI USB_CDNS_HOST USB_CDNS_SUPPORT USB_CHAOSKEY USB_CHIPIDEA USB_CHIPIDEA_GENERIC USB_CHIPIDEA_HOST USB_CHIPIDEA_MSM USB_CHIPIDEA_NPCM USB_CHIPIDEA_PCI USB_CHIPIDEA_UDC 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_MIDI2 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_CONN_GPIO 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_HAPS USB_DWC3_OF_SIMPLE USB_DWC3_PCI USB_DWC3_ULPI USB_DYNAMIC_MINORS USB_EG20T USB_EHCI_FSL 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_MIDI2 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_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_LGM_PHY USB_LIBCOMPOSITE USB_LINK_LAYER_TEST USB_M5602 USB_MA901 USB_MAX3420_UDC USB_MAX3421_HCD USB_MDC800 USB_MICROTEK USB_MR800 USB_MSI2500 USB_MUSB_DUAL_ROLE USB_MUSB_HDRC USB_NET2280 USB_NET_AQC111 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_PCI_RENESAS USB_XHCI_PLATFORM USB_XUSBATM USB_YUREX USERFAULTFD USERIO USER_RETURN_NOTIFIER UVC_COMMON U_SERIAL_CONSOLE V4L2_ASYNC V4L2_FWNODE V4L2_MEM2MEM_DEV V4L_TEST_DRIVERS VALIDATE_FS_PARSER VDPA VDPA_SIM VDPA_SIM_BLOCK VDPA_SIM_NET VETH VFIO VFIO_DEVICE_CDEV VFIO_PCI VFIO_PCI_CORE VFIO_PCI_INTX VFIO_VIRQFD VGASTATE VHOST VHOST_CROSS_ENDIAN_LEGACY VHOST_ENABLE_FORK_OWNER_CONTROL VHOST_IOTLB VHOST_NET VHOST_RING VHOST_TASK VHOST_VDPA VHOST_VSOCK VIDEO 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_CAMERA_LENS 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_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_PROC WIREGUARD WIRELESS WLAN WLAN_VENDOR_ADMTEK WLAN_VENDOR_SILABS X86_SGX X86_SGX_KVM X86_USER_SHADOW_STACK 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 XILLYBUS_CLASS XILLYUSB XOR_BLOCKS YENTA YENTA_ENE_TUNE YENTA_O2 YENTA_RICOH YENTA_TI YENTA_TOSHIBA ZEROPLUS_FF ZLIB_DEFLATE ZONEFS_FS ZPOOL ZRAM ZRAM_BACKEND_FORCE_LZO ZRAM_BACKEND_LZO ZRAM_DEF_COMP_LZO ZSMALLOC ZSTD_COMPRESS ZSWAP ZSWAP_COMPRESSOR_DEFAULT_842 ZSWAP_DEFAULT_ON ZSWAP_SHRINKER_DEFAULT_ON ZSWAP_ZPOOL_DEFAULT_ZSMALLOC] disabling configs for [hang memleak ubsan bug_or_warning locking atomic_sleep], they are not needed picked [v6.16 v6.15 v6.14 v6.12 v6.10 v6.8 v6.6 v6.4 v6.1 v5.18 v5.15 v5.12 v5.9 v5.6 v5.3 v5.0 v4.19] out of 39 release tags testing release v6.16 testing commit 038d61fd642278bab63ee8ef722c50d10ab01e8f gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: aac4ff7832eba44e1e3fef0c54d47242571755a46a0951cd195d9227c2e215bd all runs: crashed: KASAN: slab-use-after-free Read in napi_gro_frags representative crash: KASAN: slab-use-after-free Read in napi_gro_frags, types: [KASAN-USE-AFTER-FREE-READ] testing release v6.15 testing commit 0ff41df1cb268fc69e703a08a57ee14ae967d0ca gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 74d937783ba62f2c935cc0b67e05484ec925b19437184381659718534850f8e5 all runs: crashed: KASAN: slab-use-after-free Read in napi_gro_frags representative crash: KASAN: slab-use-after-free Read in napi_gro_frags, types: [KASAN-USE-AFTER-FREE-READ] testing release v6.14 testing commit 38fec10eb60d687e30c8c6b5420d86e8149f7557 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 8b7a5b5f85c4ad7093ce232defefe9e595da3abd61356722a32d410803654393 all runs: crashed: KASAN: slab-use-after-free Read in napi_gro_frags representative crash: KASAN: slab-use-after-free Read in napi_gro_frags, types: [KASAN-USE-AFTER-FREE-READ] testing release v6.12 testing commit adc218676eef25575469234709c2d87185ca223a gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 260f98e3d5e5045ffb37b4673abc90b79e3f6b667e6d1b07ce6d96b71e19f5cd all runs: crashed: KASAN: slab-use-after-free Read in napi_gro_frags representative crash: KASAN: slab-use-after-free Read in napi_gro_frags, types: [KASAN-USE-AFTER-FREE-READ] testing release v6.10 testing commit 0c3836482481200ead7b416ca80c68a29cfdaabd gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 5cdb88eb770e1bb1bd2d09062367e8e2ab1aa44d77286c7a36460321edd05e82 all runs: crashed: KASAN: slab-use-after-free Read in napi_gro_frags representative crash: KASAN: slab-use-after-free Read in napi_gro_frags, types: [KASAN-USE-AFTER-FREE-READ] testing release v6.8 testing commit e8f897f4afef0031fe618a8e94127a0934896aba gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 5e9fac53a6b1d603de69437256ac2d86236118b30ba74ff2d6d42403ccdeeb7b all runs: OK false negative chance: 0.000 # git bisect start 0c3836482481200ead7b416ca80c68a29cfdaabd e8f897f4afef0031fe618a8e94127a0934896aba Bisecting: 15131 revisions left to test after this (roughly 14 steps) [63407d3081a6b406d94bd7d96ff2ca38fa7df236] Merge tag 'phy-fixes-6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/phy/linux-phy testing commit 63407d3081a6b406d94bd7d96ff2ca38fa7df236 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: eb2a5935d42c2e95c22334f917cc3f75c495c4ba0669c901e75c9bd20c5a94cf all runs: crashed: KASAN: slab-use-after-free Read in napi_gro_frags representative crash: KASAN: slab-use-after-free Read in napi_gro_frags, types: [KASAN-USE-AFTER-FREE-READ] # git bisect bad 63407d3081a6b406d94bd7d96ff2ca38fa7df236 Bisecting: 7033 revisions left to test after this (roughly 13 steps) [480e035fc4c714fb5536e64ab9db04fedc89e910] Merge tag 'drm-next-2024-03-13' of https://gitlab.freedesktop.org/drm/kernel testing commit 480e035fc4c714fb5536e64ab9db04fedc89e910 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 2e03f198061598e2e94abba884d51bc3b5de5c4c33ba3b3f42f06e948a92b1ee all runs: crashed: KASAN: slab-use-after-free Read in napi_gro_frags representative crash: KASAN: slab-use-after-free Read in napi_gro_frags, types: [KASAN-USE-AFTER-FREE-READ] # git bisect bad 480e035fc4c714fb5536e64ab9db04fedc89e910 Bisecting: 2870 revisions left to test after this (roughly 12 steps) [9187210eee7d87eea37b45ea93454a88681894a4] Merge tag 'net-next-6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next testing commit 9187210eee7d87eea37b45ea93454a88681894a4 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 102b59cff0d7aa75455095e880bcf63d33dd2a88657b94b3e52965a9c23694fd all runs: crashed: KASAN: slab-use-after-free Read in napi_gro_frags representative crash: KASAN: slab-use-after-free Read in napi_gro_frags, types: [KASAN-USE-AFTER-FREE-READ] # git bisect bad 9187210eee7d87eea37b45ea93454a88681894a4 Bisecting: 2600 revisions left to test after this (roughly 11 steps) [a01c9fe32378636ae65bec8047b5de3fdb2ba5c8] Merge tag 'nfsd-6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux testing commit a01c9fe32378636ae65bec8047b5de3fdb2ba5c8 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 1155b6574d5ad2fbc175c3255819363158dd6ef3b502d3610eb4b30f45bc93ad all runs: OK false negative chance: 0.000 # git bisect good a01c9fe32378636ae65bec8047b5de3fdb2ba5c8 Bisecting: 1299 revisions left to test after this (roughly 10 steps) [ca61ba3885274a684c83d8a538eb77b30e38ee92] Merge branch 'rework-genet-mdioclocking' testing commit ca61ba3885274a684c83d8a538eb77b30e38ee92 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 581b726fb04712b8701749ef10c862a0077aa7ff986b7c0a28f9d240d1a360b3 all runs: crashed: KASAN: slab-use-after-free Read in napi_gro_frags representative crash: KASAN: slab-use-after-free Read in napi_gro_frags, types: [KASAN-USE-AFTER-FREE-READ] # git bisect bad ca61ba3885274a684c83d8a538eb77b30e38ee92 Bisecting: 650 revisions left to test after this (roughly 9 steps) [f42822f22b1c5f72c7e3497d9683f379ab0c5fe4] bnxt_en: Use firmware provided maximum filter counts. testing commit f42822f22b1c5f72c7e3497d9683f379ab0c5fe4 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: c7284f8126217fb182f58f2c2ac73c58715bac02c6bca0c97111ebe5ec2ebbab all runs: OK false negative chance: 0.000 # git bisect good f42822f22b1c5f72c7e3497d9683f379ab0c5fe4 Bisecting: 325 revisions left to test after this (roughly 8 steps) [e10cd2ddd89e8b3e61b49247067e79f7debec2f1] wifi: rtw89: load BB parameters to PHY-1 testing commit e10cd2ddd89e8b3e61b49247067e79f7debec2f1 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: fe155745cb4384841537d43afbacf013dc2ec446eb24693dc1710b54900d32be all runs: OK false negative chance: 0.000 # git bisect good e10cd2ddd89e8b3e61b49247067e79f7debec2f1 Bisecting: 162 revisions left to test after this (roughly 7 steps) [81800aef0eba33df2b30f2e29a0137078b9ba256] net: mdio_bus: make mdio_bus_type const testing commit 81800aef0eba33df2b30f2e29a0137078b9ba256 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 787dd819b78c405519e1453548103a011b230f652e6b5d0791354932bcb88bef all runs: crashed: KASAN: slab-use-after-free Read in napi_gro_frags representative crash: KASAN: slab-use-after-free Read in napi_gro_frags, types: [KASAN-USE-AFTER-FREE-READ] # git bisect bad 81800aef0eba33df2b30f2e29a0137078b9ba256 Bisecting: 81 revisions left to test after this (roughly 6 steps) [bed90b06b6812d9c8c848414b090ddf38f0e6cc1] net: phy: aquantia: clear PMD Global Transmit Disable bit during init testing commit bed90b06b6812d9c8c848414b090ddf38f0e6cc1 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 5c2d5810d2b0289021976ec831d43bd1f6dd2eb40ed87bb23d471000ebdfb352 all runs: OK false negative chance: 0.000 # git bisect good bed90b06b6812d9c8c848414b090ddf38f0e6cc1 Bisecting: 33 revisions left to test after this (roughly 5 steps) [e1a00373e1305578cd09526aa056940409e6b877] Merge tag 'linux-can-next-for-6.9-20240213' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can-next testing commit e1a00373e1305578cd09526aa056940409e6b877 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 6f15dd2899287f9b46d6eae0dcb44febd3abc2f243f24bb91b58afb1277ac43c all runs: crashed: KASAN: slab-use-after-free Read in napi_gro_frags representative crash: KASAN: slab-use-after-free Read in napi_gro_frags, types: [KASAN-USE-AFTER-FREE-READ] # git bisect bad e1a00373e1305578cd09526aa056940409e6b877 Bisecting: 23 revisions left to test after this (roughly 5 steps) [383de5664c87abe097d6369d18305c3a6e559bb2] can: softing: remove redundant NULL check testing commit 383de5664c87abe097d6369d18305c3a6e559bb2 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: ce53d59122a30124c21ca78e8940e50a11f26f6be4e5715fd61ed47afbd93dc8 all runs: OK false negative chance: 0.000 # git bisect good 383de5664c87abe097d6369d18305c3a6e559bb2 Bisecting: 11 revisions left to test after this (roughly 4 steps) [2ce30993831041b9dcd31eb12896be6611e8b7e2] r8169: add generic rtl_set_eee_txidle_timer function testing commit 2ce30993831041b9dcd31eb12896be6611e8b7e2 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: d62c3caf651af4e8836d324218a2bb07399389b6f9b391baa79bae621de52c79 all runs: OK false negative chance: 0.000 # git bisect good 2ce30993831041b9dcd31eb12896be6611e8b7e2 Bisecting: 5 revisions left to test after this (roughly 3 steps) [4d2bb0bfe8741a8778e0053f31a4e0f0cba80e8b] xdp: rely on skb pointer reference in do_xdp_generic and netif_receive_generic_xdp testing commit 4d2bb0bfe8741a8778e0053f31a4e0f0cba80e8b gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 40950a40fdd05a6032649c0d336c2c534149ff21fac6a9200bee65cb3b511b53 all runs: OK false negative chance: 0.000 # git bisect good 4d2bb0bfe8741a8778e0053f31a4e0f0cba80e8b Bisecting: 2 revisions left to test after this (roughly 2 steps) [f77581bfda2409a0a3f3a42fa70cab9ef0891e9c] Merge branch 'add-multi-buff-support-for-xdp-running-in-generic-mode' testing commit f77581bfda2409a0a3f3a42fa70cab9ef0891e9c gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 3e0c02f5b5f115e5148a395ced027a0ce5d4f84ecd65ff9913d287f70071d8bf run #0: crashed: KASAN: slab-use-after-free Read in napi_gro_frags run #1: crashed: KASAN: slab-use-after-free Read in napi_gro_frags run #2: crashed: KASAN: slab-use-after-free Read in napi_gro_frags run #3: crashed: KFENCE: use-after-free read in napi_gro_frags run #4: crashed: KASAN: slab-use-after-free Read in napi_gro_frags run #5: crashed: KASAN: slab-use-after-free Read in napi_gro_frags run #6: crashed: KASAN: slab-use-after-free Read in napi_gro_frags run #7: crashed: KASAN: slab-use-after-free Read in napi_gro_frags run #8: crashed: KASAN: slab-use-after-free Read in napi_gro_frags run #9: crashed: KASAN: slab-use-after-free Read in napi_gro_frags representative crash: KASAN: slab-use-after-free Read in napi_gro_frags, types: [KASAN-USE-AFTER-FREE-READ] # git bisect bad f77581bfda2409a0a3f3a42fa70cab9ef0891e9c Bisecting: 0 revisions left to test after this (roughly 1 step) [27accb3cc08a0ec4e348356774042d5fa5f30cce] veth: rely on skb_pp_cow_data utility routine testing commit 27accb3cc08a0ec4e348356774042d5fa5f30cce gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 962356a1feb8b373c153f8e486a4ecb4858700baa0cfa7811b7d93db3416ef80 all runs: crashed: KASAN: slab-use-after-free Read in napi_gro_frags representative crash: KASAN: slab-use-after-free Read in napi_gro_frags, types: [KASAN-USE-AFTER-FREE-READ] # git bisect bad 27accb3cc08a0ec4e348356774042d5fa5f30cce Bisecting: 0 revisions left to test after this (roughly 0 steps) [e6d5dbdd20aa6a86974af51deb9414cd2e7794cb] xdp: add multi-buff support for xdp running in generic mode testing commit e6d5dbdd20aa6a86974af51deb9414cd2e7794cb gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 2b176aeaa69b11a668713d8a51b831135af2b4475befa6374e146f83508d7b0c all runs: crashed: KASAN: slab-use-after-free Read in napi_gro_frags representative crash: KASAN: slab-use-after-free Read in napi_gro_frags, types: [KASAN-USE-AFTER-FREE-READ] # git bisect bad e6d5dbdd20aa6a86974af51deb9414cd2e7794cb e6d5dbdd20aa6a86974af51deb9414cd2e7794cb is the first bad commit commit e6d5dbdd20aa6a86974af51deb9414cd2e7794cb Author: Lorenzo Bianconi Date: Mon Feb 12 10:50:56 2024 +0100 xdp: add multi-buff support for xdp running in generic mode Similar to native xdp, do not always linearize the skb in netif_receive_generic_xdp routine but create a non-linear xdp_buff to be processed by the eBPF program. This allow to add multi-buffer support for xdp running in generic mode. Acked-by: Jesper Dangaard Brouer Reviewed-by: Toke Hoiland-Jorgensen Signed-off-by: Lorenzo Bianconi Link: https://lore.kernel.org/r/1044d6412b1c3e95b40d34993fd5f37cd2f319fd.1707729884.git.lorenzo@kernel.org Signed-off-by: Jakub Kicinski include/linux/skbuff.h | 2 ++ net/core/dev.c | 70 +++++++++++++++++++++++++++----------- net/core/skbuff.c | 91 ++++++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 144 insertions(+), 19 deletions(-) accumulated error probability: 0.00 culprit signature: 2b176aeaa69b11a668713d8a51b831135af2b4475befa6374e146f83508d7b0c parent signature: 40950a40fdd05a6032649c0d336c2c534149ff21fac6a9200bee65cb3b511b53 revisions tested: 29, total time: 7h57m14.855408768s (build: 4h49m7.870957366s, test: 2h31m50.495558382s) first bad commit: e6d5dbdd20aa6a86974af51deb9414cd2e7794cb xdp: add multi-buff support for xdp running in generic mode recipients (to): ["hawk@kernel.org" "kuba@kernel.org" "lorenzo@kernel.org" "toke@redhat.com"] recipients (cc): [] crash: KASAN: slab-use-after-free Read in napi_gro_frags syz.2.17 uses obsolete (PF_INET,SOCK_PACKET) ================================================================== BUG: KASAN: slab-use-after-free in skb_reset_mac_header include/linux/skbuff.h:2933 [inline] BUG: KASAN: slab-use-after-free in napi_frags_skb net/core/gro.c:700 [inline] BUG: KASAN: slab-use-after-free in napi_gro_frags+0x68/0xc30 net/core/gro.c:732 Read of size 8 at addr ffff8881148605c8 by task syz.2.17/3222 CPU: 0 PID: 3222 Comm: syz.2.17 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025 Call Trace: dump_stack_lvl+0xcf/0x140 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:377 [inline] print_report+0xca/0x250 mm/kasan/report.c:488 kasan_report+0x117/0x150 mm/kasan/report.c:601 skb_reset_mac_header include/linux/skbuff.h:2933 [inline] napi_frags_skb net/core/gro.c:700 [inline] napi_gro_frags+0x68/0xc30 net/core/gro.c:732 tun_get_user+0x1d1c/0x2bc0 drivers/net/tun.c:1977 tun_chr_write_iter+0xc3/0x190 drivers/net/tun.c:2053 call_write_iter include/linux/fs.h:2085 [inline] new_sync_write fs/read_write.c:497 [inline] vfs_write+0x593/0xc10 fs/read_write.c:590 ksys_write+0xf2/0x1a0 fs/read_write.c:643 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x92/0x180 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x6f/0x77 RIP: 0033:0x7f8f5df11be9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f8f5dd82038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f8f5e148fa0 RCX: 00007f8f5df11be9 RDX: 000000000000004b RSI: 0000200000000340 RDI: 0000000000000003 RBP: 00007f8f5df94e19 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f8f5e149038 R14: 00007f8f5e148fa0 R15: 00007ffe5eababe8 Allocated by task 3222: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3e/0x80 mm/kasan/common.c:68 unpoison_slab_object mm/kasan/common.c:314 [inline] __kasan_mempool_unpoison_object+0xad/0x1c0 mm/kasan/common.c:537 kasan_mempool_unpoison_object include/linux/kasan.h:339 [inline] napi_skb_cache_get net/core/skbuff.c:340 [inline] __napi_build_skb+0xc8/0x190 net/core/skbuff.c:510 __napi_alloc_skb+0x311/0x490 net/core/skbuff.c:829 napi_alloc_skb include/linux/skbuff.h:3292 [inline] napi_get_frags+0x61/0x130 net/core/gro.c:650 tun_napi_alloc_frags drivers/net/tun.c:1473 [inline] tun_get_user+0x77a/0x2bc0 drivers/net/tun.c:1841 tun_chr_write_iter+0xc3/0x190 drivers/net/tun.c:2053 call_write_iter include/linux/fs.h:2085 [inline] new_sync_write fs/read_write.c:497 [inline] vfs_write+0x593/0xc10 fs/read_write.c:590 ksys_write+0xf2/0x1a0 fs/read_write.c:643 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x92/0x180 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x6f/0x77 Freed by task 3222: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3e/0x80 mm/kasan/common.c:68 kasan_save_free_info+0x54/0x70 mm/kasan/generic.c:640 poison_slab_object+0xfb/0x1c0 mm/kasan/common.c:241 __kasan_slab_free+0x3d/0x70 mm/kasan/common.c:257 kasan_slab_free include/linux/kasan.h:184 [inline] slab_free_hook mm/slub.c:2121 [inline] slab_free mm/slub.c:4299 [inline] kmem_cache_free+0x12b/0x310 mm/slub.c:4363 skb_pp_cow_data net/core/skbuff.c:970 [inline] skb_cow_data_for_xdp+0xc60/0x11f0 net/core/skbuff.c:985 netif_skb_check_for_xdp net/core/dev.c:4959 [inline] netif_receive_generic_xdp net/core/dev.c:4998 [inline] do_xdp_generic+0x274/0x960 net/core/dev.c:5063 tun_get_user+0x1ad5/0x2bc0 drivers/net/tun.c:1929 tun_chr_write_iter+0xc3/0x190 drivers/net/tun.c:2053 call_write_iter include/linux/fs.h:2085 [inline] new_sync_write fs/read_write.c:497 [inline] vfs_write+0x593/0xc10 fs/read_write.c:590 ksys_write+0xf2/0x1a0 fs/read_write.c:643 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x92/0x180 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x6f/0x77 The buggy address belongs to the object at ffff888114860500 which belongs to the cache skbuff_head_cache of size 224 The buggy address is located 200 bytes inside of freed 224-byte region [ffff888114860500, ffff8881148605e0) The buggy address belongs to the physical page: page:ffffea0004521800 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x114860 flags: 0x200000000000800(slab|node=0|zone=2) page_type: 0xffffffff() raw: 0200000000000800 ffff8881026c03c0 ffffea000449e540 dead000000000002 raw: 0000000000000000 00000000000c000c 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 1971, tgid 1971 (udevadm), ts 5914911784, free_ts 0 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x16e/0x1b0 mm/page_alloc.c:1533 prep_new_page mm/page_alloc.c:1540 [inline] get_page_from_freelist+0x2eaa/0x3000 mm/page_alloc.c:3311 __alloc_pages+0x1d2/0x400 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+0x46/0x140 mm/slub.c:2190 allocate_slab mm/slub.c:2354 [inline] new_slab+0x70/0x270 mm/slub.c:2407 ___slab_alloc+0xa70/0x1020 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] kmem_cache_alloc+0x21c/0x360 mm/slub.c:3867 skb_clone+0x19f/0x330 net/core/skbuff.c:2046 do_one_broadcast net/netlink/af_netlink.c:1472 [inline] netlink_broadcast_filtered+0x560/0xdf0 net/netlink/af_netlink.c:1550 netlink_broadcast+0xe/0x20 net/netlink/af_netlink.c:1574 uevent_net_broadcast_untagged lib/kobject_uevent.c:331 [inline] kobject_uevent_net_broadcast+0x30c/0x3f0 lib/kobject_uevent.c:409 kobject_uevent_env+0x567/0x700 lib/kobject_uevent.c:593 kobject_synth_uevent+0x741/0x8d0 lib/kobject_uevent.c:208 uevent_store+0x46/0x60 drivers/base/bus.c:633 kernfs_fop_write_iter+0x29c/0x3d0 fs/kernfs/file.c:334 call_write_iter include/linux/fs.h:2085 [inline] new_sync_write fs/read_write.c:497 [inline] vfs_write+0x593/0xc10 fs/read_write.c:590 page_owner free stack trace missing Memory state around the buggy address: ffff888114860480: fb fb fb fb fc fc fc fc fc fc fc fc fc fc fc fc ffff888114860500: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff888114860580: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc ^ ffff888114860600: fc fc fc fc fc fc fc fc 00 00 00 00 00 00 00 00 ffff888114860680: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================