ci starts bisection 2025-12-30 21:36:24.209101353 +0000 UTC m=+2972173.734587461 bisecting fixing commit since cd802e7e5f1e77ae68cd98653fb70a97189eb937 building syzkaller on 77908e5f2ae80bee6d434bca762a25a0a5fc6a83 ensuring issue is reproducible on original commit cd802e7e5f1e77ae68cd98653fb70a97189eb937 testing commit cd802e7e5f1e77ae68cd98653fb70a97189eb937 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: f92327c742354c9404405b189b3d9be2e3f3a0a4e195362566f6fcbe13738e40 run #0: crashed: KASAN: use-after-free Read in em28xx_close_extension run #1: crashed: BUG: corrupted list in em28xx_close_extension run #2: crashed: BUG: corrupted list in em28xx_close_extension run #3: crashed: KASAN: use-after-free Read in em28xx_close_extension run #4: crashed: KASAN: use-after-free Read in em28xx_close_extension run #5: crashed: KASAN: slab-out-of-bounds Read in em28xx_init_extension run #6: crashed: BUG: corrupted list in em28xx_close_extension run #7: crashed: BUG: corrupted list in em28xx_init_extension run #8: crashed: BUG: corrupted list in em28xx_close_extension run #9: crashed: BUG: corrupted list in em28xx_close_extension run #10: crashed: KASAN: use-after-free Read in em28xx_close_extension run #11: crashed: BUG: corrupted list in em28xx_close_extension run #12: crashed: BUG: corrupted list in em28xx_close_extension run #13: crashed: BUG: corrupted list in em28xx_close_extension run #14: crashed: BUG: corrupted list in em28xx_init_extension run #15: crashed: KASAN: use-after-free Read in em28xx_close_extension run #16: crashed: KASAN: use-after-free Read in em28xx_close_extension run #17: crashed: BUG: corrupted list in em28xx_init_extension run #18: crashed: KASAN: slab-use-after-free Read in em28xx_init_extension run #19: crashed: KASAN: use-after-free Read in em28xx_init_extension representative crash: BUG: corrupted list in em28xx_close_extension, types: [MEMORY_SAFETY_BUG KASAN-USE-AFTER-FREE-READ] check whether we can drop unnecessary instrumentation disabling configs for [locking atomic_sleep hang memleak ubsan], they are not needed testing commit cd802e7e5f1e77ae68cd98653fb70a97189eb937 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 84c659387dbcf45f9e575b96efab4fe59f00718597baaba8359f57c8d03a8850 run #0: crashed: BUG: corrupted list in em28xx_init_extension run #1: crashed: KASAN: use-after-free Read in em28xx_close_extension run #2: crashed: BUG: corrupted list in em28xx_init_extension run #3: crashed: BUG: corrupted list in em28xx_close_extension run #4: crashed: BUG: corrupted list in em28xx_init_extension run #5: crashed: BUG: corrupted list in em28xx_close_extension run #6: crashed: KASAN: slab-use-after-free Read in em28xx_init_extension run #7: crashed: KASAN: slab-use-after-free Read in em28xx_init_extension run #8: crashed: BUG: corrupted list in em28xx_init_extension run #9: crashed: KASAN: slab-out-of-bounds Read in em28xx_init_extension representative crash: BUG: corrupted list in em28xx_init_extension, types: [MEMORY_SAFETY_BUG KASAN-USE-AFTER-FREE-READ] the bug reproduces without the instrumentation disabling configs for [atomic_sleep hang memleak ubsan locking], they are not needed kconfig minimization: base=4116 full=8329 leaves diff=2155 split chunks (needed=false): <2155> split chunk #0 of len 2155 into 5 parts testing without sub-chunk 1/5 disabling configs for [locking atomic_sleep hang memleak ubsan], they are not needed testing commit cd802e7e5f1e77ae68cd98653fb70a97189eb937 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: f2812aefef2ee51dc4752966cf5707a89f8b852b82176bba1f800b747bc4b0ec run #0: crashed: BUG: corrupted list in em28xx_close_extension run #1: crashed: BUG: corrupted list in em28xx_close_extension run #2: crashed: KASAN: use-after-free Read in em28xx_close_extension run #3: crashed: KASAN: slab-out-of-bounds Read in em28xx_close_extension run #4: crashed: BUG: corrupted list in em28xx_close_extension run #5: crashed: KASAN: slab-out-of-bounds Read in em28xx_close_extension run #6: crashed: KASAN: slab-use-after-free Read in em28xx_close_extension run #7: crashed: KASAN: use-after-free Read in em28xx_close_extension run #8: crashed: BUG: corrupted list in em28xx_init_extension run #9: crashed: BUG: corrupted list in em28xx_close_extension representative crash: BUG: corrupted list in em28xx_close_extension, types: [MEMORY_SAFETY_BUG KASAN-USE-AFTER-FREE-READ] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [locking atomic_sleep hang memleak ubsan], they are not needed testing commit cd802e7e5f1e77ae68cd98653fb70a97189eb937 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 11140331808f8ee1ea95ea2da79e268ab783b1607605eb22173a6f4d505e4e31 run #0: crashed: BUG: corrupted list in em28xx_init_extension run #1: crashed: BUG: corrupted list in em28xx_close_extension run #2: crashed: KASAN: slab-out-of-bounds Read in em28xx_init_extension run #3: crashed: KASAN: slab-out-of-bounds Read in em28xx_close_extension run #4: crashed: BUG: corrupted list in em28xx_init_extension run #5: crashed: BUG: corrupted list in em28xx_init_extension run #6: crashed: BUG: corrupted list in em28xx_close_extension run #7: crashed: KASAN: use-after-free Read in em28xx_close_extension run #8: crashed: BUG: corrupted list in em28xx_close_extension run #9: crashed: BUG: corrupted list in em28xx_close_extension representative crash: BUG: corrupted list in em28xx_init_extension, types: [MEMORY_SAFETY_BUG KASAN-READ] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [hang memleak ubsan locking atomic_sleep], they are not needed testing commit cd802e7e5f1e77ae68cd98653fb70a97189eb937 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: e0cc3b170eafe10a16a5922376b0c20cdf86440a8ef849de32359d3b9fdea461 run #0: crashed: BUG: corrupted list in em28xx_close_extension run #1: crashed: BUG: corrupted list in em28xx_close_extension run #2: crashed: BUG: corrupted list in em28xx_close_extension run #3: crashed: KASAN: use-after-free Read in em28xx_close_extension run #4: crashed: BUG: corrupted list in em28xx_close_extension run #5: crashed: BUG: corrupted list in em28xx_close_extension run #6: crashed: BUG: corrupted list in em28xx_close_extension run #7: crashed: KASAN: use-after-free Read in em28xx_close_extension run #8: crashed: KASAN: slab-use-after-free Read in em28xx_close_extension run #9: crashed: KASAN: use-after-free Read in em28xx_close_extension representative crash: BUG: corrupted list in em28xx_close_extension, types: [MEMORY_SAFETY_BUG KASAN-USE-AFTER-FREE-READ] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [hang memleak ubsan locking atomic_sleep], they are not needed testing commit cd802e7e5f1e77ae68cd98653fb70a97189eb937 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: d3398e69ce5d6ff584745a988c33ddacaf4bc77a44fe819b2b6c29c9927b6b70 run #0: crashed: KASAN: use-after-free Read in em28xx_close_extension run #1: crashed: BUG: corrupted list in em28xx_close_extension run #2: crashed: KASAN: use-after-free Read in em28xx_close_extension run #3: crashed: BUG: corrupted list in em28xx_close_extension run #4: crashed: KASAN: use-after-free Read in em28xx_close_extension run #5: crashed: BUG: corrupted list in em28xx_close_extension run #6: crashed: BUG: corrupted list in em28xx_close_extension run #7: crashed: KASAN: use-after-free Read in em28xx_close_extension run #8: crashed: BUG: corrupted list in em28xx_close_extension run #9: crashed: KASAN: slab-use-after-free Read in em28xx_close_extension representative crash: KASAN: use-after-free Read in em28xx_close_extension, types: [KASAN-USE-AFTER-FREE-READ MEMORY_SAFETY_BUG] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [locking atomic_sleep hang memleak ubsan], they are not needed testing commit cd802e7e5f1e77ae68cd98653fb70a97189eb937 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 733ff2a375754b4c07a61162efd2f0558d364ca1c658640310eb14209e9488de all runs: OK false negative chance: 0.000 minimized to 431 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_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 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 VETH VFIO VFIO_DEVICE_CDEV VFIO_PCI VFIO_PCI_CORE VFIO_PCI_INTX VFIO_VIRQFD VGASTATE VHOST VHOST_CROSS_ENDIAN_LEGACY 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_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_64_SMP X86_DISABLED_FEATURE_LA57 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 [atomic_sleep hang memleak ubsan locking], they are not needed testing current HEAD dbf8fe85a16a33d6b6bd01f2bc606fc017771465 testing commit dbf8fe85a16a33d6b6bd01f2bc606fc017771465 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 52742fa8b3c63b70f2ebfebb59d362f159e4fc7dba65d359a6ea9eda45811b77 run #0: crashed: KASAN: use-after-free Read in em28xx_close_extension run #1: crashed: BUG: corrupted list in em28xx_close_extension run #2: crashed: KASAN: slab-use-after-free Read in em28xx_close_extension run #3: crashed: KASAN: use-after-free Read in em28xx_close_extension run #4: crashed: KASAN: use-after-free Read in em28xx_close_extension run #5: crashed: BUG: corrupted list in em28xx_close_extension run #6: crashed: BUG: corrupted list in em28xx_close_extension run #7: crashed: KASAN: use-after-free Read in em28xx_close_extension run #8: crashed: BUG: corrupted list in em28xx_close_extension run #9: crashed: KASAN: use-after-free Read in em28xx_init_extension representative crash: KASAN: use-after-free Read in em28xx_close_extension, types: [KASAN-USE-AFTER-FREE-READ MEMORY_SAFETY_BUG] crash still not fixed/happens on the oldest tested release revisions tested: 8, total time: 1h58m13.39649238s (build: 1h9m56.38310783s, test: 37m34.812884683s) crash still not fixed or there were kernel test errors commit msg: Merge tag 'net-6.19-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net crash: KASAN: use-after-free Read in em28xx_close_extension usb 7-1: USB disconnect, device number 2 em28xx 7-1:0.0: Disconnecting em28xx #7 em28xx 7-1:0.0: Disconnecting em28xx ================================================================== BUG: KASAN: use-after-free in __list_del_entry_valid_or_report+0x92/0x190 lib/list_debug.c:62 Read of size 8 at addr ffff888130ebc250 by task kworker/1:7/3183 CPU: 1 UID: 0 PID: 3183 Comm: kworker/1:7 Not tainted syzkaller #0 PREEMPT(none) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 Workqueue: usb_hub_wq hub_event Call Trace: dump_stack_lvl+0x52/0x80 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:378 [inline] print_report+0xca/0x240 mm/kasan/report.c:482 kasan_report+0x118/0x150 mm/kasan/report.c:595 __list_del_entry_valid_or_report+0x92/0x190 lib/list_debug.c:62 __list_del_entry_valid include/linux/list.h:132 [inline] __list_del_entry include/linux/list.h:223 [inline] list_del include/linux/list.h:237 [inline] em28xx_close_extension+0xf6/0x1d0 drivers/media/usb/em28xx/em28xx-core.c:1137 em28xx_usb_disconnect+0x153/0x260 drivers/media/usb/em28xx/em28xx-cards.c:4197 usb_unbind_interface+0x1c2/0x820 drivers/usb/core/driver.c:458 device_remove drivers/base/dd.c:571 [inline] __device_release_driver drivers/base/dd.c:1282 [inline] device_release_driver_internal+0x45a/0x750 drivers/base/dd.c:1305 bus_remove_device+0x2d0/0x390 drivers/base/bus.c:616 device_del+0x442/0x790 drivers/base/core.c:3878 usb_disable_device+0x2da/0x650 drivers/usb/core/message.c:1418 usb_disconnect+0x2c2/0x870 drivers/usb/core/hub.c:2345 hub_port_connect drivers/usb/core/hub.c:5407 [inline] hub_port_connect_change drivers/usb/core/hub.c:5707 [inline] port_event drivers/usb/core/hub.c:5871 [inline] hub_event+0x164b/0x3ba0 drivers/usb/core/hub.c:5953 process_one_work kernel/workqueue.c:3257 [inline] process_scheduled_works+0x9ef/0x13b0 kernel/workqueue.c:3340 worker_thread+0x74e/0xb30 kernel/workqueue.c:3421 kthread+0x5d3/0x740 kernel/kthread.c:463 ret_from_fork+0x2bd/0x630 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246 The buggy address belongs to the physical page: page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888130ebfa80 pfn:0x130ebc flags: 0x200000000000000(node=0|zone=2) raw: 0200000000000000 ffffea00047c4708 ffffea0004c3b408 0000000000000000 raw: ffff888130ebfa80 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as freed page last allocated via order 2, migratetype Unmovable, gfp_mask 0x40cc0(GFP_KERNEL|__GFP_COMP), pid 334, tgid 334 (kworker/0:2), ts 66853323152, free_ts 67818931255 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x15a/0x190 mm/page_alloc.c:1857 prep_new_page mm/page_alloc.c:1865 [inline] get_page_from_freelist+0x2b03/0x2c80 mm/page_alloc.c:3915 __alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:5210 alloc_pages_mpol+0xcb/0x270 mm/mempolicy.c:2486 ___kmalloc_large_node+0x4c/0x120 mm/slub.c:5598 __kmalloc_large_node_noprof+0x16/0x60 mm/slub.c:5629 __do_kmalloc_node mm/slub.c:5645 [inline] __kmalloc_node_track_caller_noprof+0x13b/0x750 mm/slub.c:5764 kmemdup_noprof+0x21/0x50 mm/util.c:138 kmemdup_noprof include/linux/fortify-string.h:765 [inline] em28xx_duplicate_dev+0x27/0x1b0 drivers/media/usb/em28xx/em28xx-cards.c:3732 em28xx_usb_probe+0x1441/0x2850 drivers/media/usb/em28xx/em28xx-cards.c:4082 usb_probe_interface+0x306/0xa10 drivers/usb/core/driver.c:396 call_driver_probe drivers/base/dd.c:-1 [inline] really_probe+0x2e6/0x9b0 drivers/base/dd.c:659 __driver_probe_device+0x138/0x2a0 drivers/base/dd.c:801 driver_probe_device+0x4a/0x1e0 drivers/base/dd.c:831 __device_attach_driver+0x1d8/0x310 drivers/base/dd.c:959 bus_for_each_drv+0x223/0x290 drivers/base/bus.c:500 page last free pid 334 tgid 334 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1406 [inline] __free_frozen_pages+0x9cf/0xb30 mm/page_alloc.c:2943 kref_put include/linux/kref.h:65 [inline] em28xx_usb_disconnect+0x215/0x260 drivers/media/usb/em28xx/em28xx-cards.c:4204 usb_unbind_interface+0x1c2/0x820 drivers/usb/core/driver.c:458 device_remove drivers/base/dd.c:571 [inline] __device_release_driver drivers/base/dd.c:1282 [inline] device_release_driver_internal+0x45a/0x750 drivers/base/dd.c:1305 bus_remove_device+0x2d0/0x390 drivers/base/bus.c:616 device_del+0x442/0x790 drivers/base/core.c:3878 usb_disable_device+0x2da/0x650 drivers/usb/core/message.c:1418 usb_disconnect+0x2c2/0x870 drivers/usb/core/hub.c:2345 hub_port_connect drivers/usb/core/hub.c:5407 [inline] hub_port_connect_change drivers/usb/core/hub.c:5707 [inline] port_event drivers/usb/core/hub.c:5871 [inline] hub_event+0x164b/0x3ba0 drivers/usb/core/hub.c:5953 process_one_work kernel/workqueue.c:3257 [inline] process_scheduled_works+0x9ef/0x13b0 kernel/workqueue.c:3340 worker_thread+0x74e/0xb30 kernel/workqueue.c:3421 kthread+0x5d3/0x740 kernel/kthread.c:463 ret_from_fork+0x2bd/0x630 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246 Memory state around the buggy address: ffff888130ebc100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff888130ebc180: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff >ffff888130ebc200: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ^ ffff888130ebc280: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff888130ebc300: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff 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