ci2 starts bisection 2026-08-14 16:59:24.166030679 +0000 UTC m=+20312.664639745
bisecting cause commit starting from 3aa1dcaa4f6f5ae08936491e08bd456f331f2d40
building syzkaller on b13552fed1cdc2826f57a5741df12ca67130314a
ensuring issue is reproducible on original commit 3aa1dcaa4f6f5ae08936491e08bd456f331f2d40

testing commit 3aa1dcaa4f6f5ae08936491e08bd456f331f2d40 gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: 5463e380d548e5139a4a5e3ef1c41c8b9baeaaaadaae7eb14b1b9726fd298ac5
run #0: crashed: KASAN: slab-use-after-free Write in release_tty
run #1: crashed: KASAN: slab-use-after-free Write in tty_init_dev
run #2: crashed: KASAN: slab-use-after-free Write in release_tty
run #3: crashed: KASAN: slab-use-after-free Write in release_tty
run #4: crashed: KASAN: slab-use-after-free Write in release_tty
run #5: crashed: KASAN: slab-use-after-free Read in check_tty_count
run #6: crashed: KASAN: slab-use-after-free Write in release_tty
run #7: crashed: KASAN: slab-use-after-free Write in release_tty
run #8: crashed: KASAN: slab-use-after-free Write in tty_init_dev
run #9: crashed: KASAN: slab-use-after-free Read in check_tty_count
run #10: crashed: KASAN: slab-use-after-free Write in tty_init_dev
run #11: crashed: KASAN: slab-use-after-free Write in tty_init_dev
run #12: crashed: KASAN: slab-use-after-free Write in tty_init_dev
run #13: crashed: KASAN: slab-use-after-free Read in check_tty_count
run #14: crashed: KASAN: slab-use-after-free Write in release_tty
run #15: crashed: KASAN: slab-use-after-free Write in tty_init_dev
run #16: crashed: KASAN: slab-use-after-free Write in release_tty
run #17: crashed: KASAN: slab-use-after-free Write in release_tty
run #18: crashed: KASAN: slab-use-after-free Write in tty_init_dev
run #19: crashed: WARNING in gs_close
representative crash: KASAN: slab-use-after-free Write in release_tty, types: [KASAN-USE-AFTER-FREE-WRITE]
check whether we can drop unnecessary instrumentation
disabling configs for [ubsan bug_or_warning locking atomic_sleep hang memleak], they are not needed
testing commit 3aa1dcaa4f6f5ae08936491e08bd456f331f2d40 gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: 3201725ac8c213e752cf8143c7684e14d9ea714458974e8a44a59e9871be5431
run #0: crashed: KASAN: slab-use-after-free Read in check_tty_count
run #1: crashed: KASAN: slab-use-after-free Read in check_tty_count
run #2: crashed: KASAN: slab-use-after-free Write in release_tty
run #3: crashed: KASAN: slab-use-after-free Write in release_tty
run #4: crashed: KASAN: slab-use-after-free Write in release_tty
run #5: crashed: KASAN: slab-use-after-free Write in release_tty
run #6: crashed: KASAN: slab-use-after-free in release_tty
run #7: crashed: KASAN: slab-use-after-free Write in release_tty
run #8: crashed: KASAN: slab-use-after-free Read in check_tty_count
run #9: crashed: KASAN: slab-use-after-free Read in check_tty_count
representative crash: KASAN: slab-use-after-free Write in release_tty, types: [KASAN-USE-AFTER-FREE-WRITE 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=4167 full=8398 leaves diff=2094
split chunks (needed=false): <2094>
split chunk #0 of len 2094 into 5 parts
testing without sub-chunk 1/5
disabling configs for [atomic_sleep hang memleak ubsan bug_or_warning locking], they are not needed
testing commit 3aa1dcaa4f6f5ae08936491e08bd456f331f2d40 gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: 8d354a65e93f22dd3551df8b6ef0213ba5eb79380fb846f4a08b97d51524aca3
run #0: crashed: KASAN: slab-use-after-free in release_tty
run #1: crashed: KASAN: slab-use-after-free Read in check_tty_count
run #2: crashed: KASAN: slab-use-after-free Read in check_tty_count
run #3: crashed: KASAN: slab-use-after-free Read in check_tty_count
run #4: crashed: KASAN: slab-use-after-free Read in check_tty_count
run #5: crashed: KASAN: slab-use-after-free Read in check_tty_count
run #6: crashed: KASAN: slab-use-after-free Write in release_tty
run #7: crashed: KASAN: slab-use-after-free Read in check_tty_count
run #8: crashed: KASAN: slab-use-after-free Read in check_tty_count
run #9: crashed: KASAN: slab-use-after-free Read in check_tty_count
representative crash: KASAN: slab-use-after-free Read in check_tty_count, types: [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 bug_or_warning], they are not needed
testing commit 3aa1dcaa4f6f5ae08936491e08bd456f331f2d40 gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: 19d30a89c082be22549839b563698a7347b38ab0d804a995587c18df3b26540d
run #0: crashed: KASAN: slab-use-after-free Write in release_tty
run #1: crashed: KASAN: slab-use-after-free Read in check_tty_count
run #2: crashed: KASAN: slab-use-after-free Write in release_tty
run #3: crashed: KASAN: slab-use-after-free Read in check_tty_count
run #4: crashed: KASAN: slab-use-after-free Read in check_tty_count
run #5: crashed: KASAN: slab-use-after-free Read in check_tty_count
run #6: crashed: KASAN: slab-use-after-free Read in check_tty_count
run #7: crashed: KASAN: slab-use-after-free Read in check_tty_count
run #8: crashed: KASAN: slab-use-after-free Read in check_tty_count
run #9: crashed: KASAN: slab-use-after-free Read in check_tty_count
representative crash: KASAN: slab-use-after-free Read in check_tty_count, types: [KASAN-USE-AFTER-FREE-READ]
the chunk can be dropped
testing without sub-chunk 3/5
disabling configs for [locking atomic_sleep hang memleak ubsan bug_or_warning], they are not needed
testing commit 3aa1dcaa4f6f5ae08936491e08bd456f331f2d40 gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: 891a4f894fa90807a065c9ad4f99dcfa675b17ece044dda4a0ce3087631345cc
all runs: crashed: KASAN: slab-use-after-free Read in check_tty_count
representative crash: KASAN: slab-use-after-free Read in check_tty_count, 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 3aa1dcaa4f6f5ae08936491e08bd456f331f2d40 gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: 5f799fa7cf0c074c9a308aa6c72a95c5e143d72eb45293011b88d364489fcd66
all runs: crashed: KASAN: slab-use-after-free Read in check_tty_count
representative crash: KASAN: slab-use-after-free Read in check_tty_count, types: [KASAN-USE-AFTER-FREE-READ]
the chunk can be dropped
testing without sub-chunk 5/5
disabling configs for [bug_or_warning locking atomic_sleep hang memleak ubsan], they are not needed
testing commit 3aa1dcaa4f6f5ae08936491e08bd456f331f2d40 gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: 51add5008466c13cac07a610129d19a2b14e477bdab740cf4b011e011ed6811a
all runs: OK
false negative chance: 0.000
minimized to 418 configs; suspects: [ATM BCMA BLK_DEV_ZONED BPF_SYSCALL CARDBUS CFG80211 CFG80211_WEXT COMMON_CLK CONTIG_ALLOC DVB_CORE EXTCON GPIOLIB HID_ZEROPLUS I2C_MUX IIO IOMMUFD 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_ATM USB_CDNS3 USB_CDNSP_PCI 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_GENERIC_PLAT 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_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 VIRT_XFER_TO_GUEST_WORK VLAN_8021Q VLAN_8021Q_GVRP VLAN_8021Q_MVRP VMWARE_VMCI VMXNET3 VP_VDPA VSOCKETS VSOCKETS_DIAG VSOCKETS_LOOPBACK VSOCKMON VT_HW_CONSOLE_BINDING WANT_DEV_COREDUMP WEXT_CORE WEXT_PROC WIREGUARD WIRELESS WLAN WLAN_VENDOR_ADMTEK WLAN_VENDOR_SILABS X86_FRED 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_BTREE_IN_MEM XFS_DRAIN_INTENTS XFS_FS XFS_LIVE_HOOKS XFS_MEMORY_BUFS XFS_ONLINE_REPAIR XFS_ONLINE_SCRUB XFS_POSIX_ACL XFS_QUOTA XFS_RT XILLYBUS_CLASS XILLYUSB XOR_BLOCKS XOR_BLOCKS_ARCH YENTA YENTA_ENE_TUNE YENTA_O2 YENTA_RICOH YENTA_TI YENTA_TOSHIBA ZEROPLUS_FF ZLIB_DEFLATE ZONEFS_FS 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]
disabling configs for [atomic_sleep hang memleak ubsan bug_or_warning locking], they are not needed
picked [v7.1 v7.0 v6.19 v6.17 v6.15 v6.13 v6.11 v6.9 v6.6 v6.3 v6.0 v5.17 v5.14 v5.11 v5.8 v5.5 v5.2 v4.20 v4.19] out of 44 release tags
testing release v7.1
testing commit 8cd9520d35a6c38db6567e97dd93b1f11f185dc6 gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: ec4e9eb049be5eeb4e413b837ac442e4d06542fc0cf6c7354c9748aed7524813
all runs: crashed: KASAN: slab-use-after-free Read in check_tty_count
representative crash: KASAN: slab-use-after-free Read in check_tty_count, types: [KASAN-USE-AFTER-FREE-READ]
testing release v7.0
testing commit 028ef9c96e96197026887c0f092424679298aae8 gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: 1a106ca76c4859aaf096eaa1299fcb8687fdd21a56c4e99295086991684ca240
run #0: crashed: KASAN: slab-use-after-free Read in check_tty_count
run #1: crashed: KASAN: slab-use-after-free Read in check_tty_count
run #2: crashed: KASAN: slab-use-after-free Read in tty_open
run #3: crashed: KASAN: slab-use-after-free Read in check_tty_count
run #4: crashed: KASAN: slab-use-after-free Read in check_tty_count
run #5: crashed: KASAN: slab-use-after-free Read in check_tty_count
run #6: crashed: KASAN: slab-use-after-free Read in check_tty_count
run #7: crashed: KASAN: slab-use-after-free Read in check_tty_count
run #8: crashed: KASAN: slab-use-after-free Read in check_tty_count
run #9: crashed: KASAN: slab-use-after-free Read in check_tty_count
representative crash: KASAN: slab-use-after-free Read in check_tty_count, types: [KASAN-USE-AFTER-FREE-READ]
testing release v6.19
testing commit 05f7e89ab9731565d8a62e3b5d1ec206485eeb0b gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: 1fb22919c197867a4e96dfbae532f2a364bb098bddbf8ee9363c462106a41163
run #0: crashed: KASAN: slab-use-after-free Read in check_tty_count
run #1: crashed: KASAN: slab-use-after-free Read in check_tty_count
run #2: crashed: KASAN: slab-use-after-free Read in check_tty_count
run #3: crashed: KASAN: slab-use-after-free Read in tty_open
run #4: crashed: KASAN: slab-use-after-free Read in check_tty_count
run #5: crashed: KASAN: slab-use-after-free Read in check_tty_count
run #6: crashed: KASAN: slab-use-after-free Read in check_tty_count
run #7: crashed: KASAN: slab-use-after-free Read in check_tty_count
run #8: crashed: KASAN: slab-use-after-free Read in check_tty_count
run #9: crashed: KASAN: slab-use-after-free Read in check_tty_count
representative crash: KASAN: slab-use-after-free Read in check_tty_count, types: [KASAN-USE-AFTER-FREE-READ]
testing release v6.17
testing commit e5f0a698b34ed76002dc5cff3804a61c80233a7a gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: f2f03dd8ff1db31ba7fd1402a9cc25aa97bf02144a0c2255485a64671891d876
all runs: crashed: KASAN: slab-use-after-free Read in check_tty_count
representative crash: KASAN: slab-use-after-free Read in check_tty_count, types: [KASAN-USE-AFTER-FREE-READ]
testing release v6.15
testing commit 0ff41df1cb268fc69e703a08a57ee14ae967d0ca gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: 2ef44153fa0f74e549ed0805d2ad49db77063dd2011f6f2f4194db27b035aa44
all runs: crashed: KASAN: slab-use-after-free Read in check_tty_count
representative crash: KASAN: slab-use-after-free Read in check_tty_count, types: [KASAN-USE-AFTER-FREE-READ]
testing release v6.13
testing commit ffd294d346d185b70e28b1a28abe367bbfe53c04 gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: 880c6df3551fdc2dd0fa2a0aeb922531e7dc45bc4867a840701c752bd71d9628
run #0: crashed: KASAN: slab-use-after-free Read in check_tty_count
run #1: crashed: KASAN: slab-use-after-free Read in check_tty_count
run #2: crashed: KASAN: slab-use-after-free Read in tty_open
run #3: crashed: KASAN: slab-use-after-free Read in tty_open
run #4: crashed: KASAN: slab-use-after-free Read in check_tty_count
run #5: crashed: KASAN: slab-use-after-free Read in check_tty_count
run #6: crashed: KASAN: slab-use-after-free Read in check_tty_count
run #7: crashed: KASAN: slab-use-after-free Read in check_tty_count
run #8: crashed: KASAN: slab-use-after-free Read in check_tty_count
run #9: crashed: KASAN: slab-use-after-free Read in check_tty_count
representative crash: KASAN: slab-use-after-free Read in check_tty_count, types: [KASAN-USE-AFTER-FREE-READ]
testing release v6.11
testing commit 98f7e32f20d28ec452afb208f9cffc08448a2652 gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: 0728e2cb006e5284d01411639b0b99da2b8ac66beec413ccbe6efdb05c21d89e
run #0: crashed: KASAN: slab-use-after-free Read in check_tty_count
run #1: crashed: KASAN: slab-use-after-free Read in check_tty_count
run #2: crashed: KASAN: slab-use-after-free Read in check_tty_count
run #3: crashed: KASAN: slab-use-after-free Read in check_tty_count
run #4: crashed: KASAN: slab-use-after-free Read in check_tty_count
run #5: crashed: KASAN: slab-use-after-free Read in check_tty_count
run #6: crashed: KASAN: slab-use-after-free Read in check_tty_count
run #7: crashed: KASAN: slab-use-after-free Read in check_tty_count
run #8: crashed: KASAN: slab-use-after-free Read in check_tty_count
run #9: crashed: KASAN: slab-use-after-free Read in tty_open
representative crash: KASAN: slab-use-after-free Read in check_tty_count, types: [KASAN-USE-AFTER-FREE-READ]
testing release v6.9
testing commit a38297e3fb012ddfa7ce0321a7e5a8daeb1872b6 gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: a65add20f67ebc345e81b4a60e1edbdfd5bf37568d28f181c0f4c91f887da1cc
all runs: crashed: KASAN: slab-use-after-free Read in check_tty_count
representative crash: KASAN: slab-use-after-free Read in check_tty_count, types: [KASAN-USE-AFTER-FREE-READ]
testing release v6.6
testing commit ffc253263a1375a65fa6c9f62a893e9767fbebfa gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: 0d743947baef3d0074a911f7e260ba57045dc28633261887e3ae5626cc607122
all runs: crashed: KASAN: slab-use-after-free Read in check_tty_count
representative crash: KASAN: slab-use-after-free Read in check_tty_count, types: [KASAN-USE-AFTER-FREE-READ]
testing release v6.3
testing commit 457391b0380335d5e9a5babdec90ac53928b23b4 gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: bdfe9b0b33fed36d6748c2a0f41f6aacae650023500c36dd6470713dfcb3d04f
all runs: crashed: KASAN: slab-use-after-free Read in check_tty_count
representative crash: KASAN: slab-use-after-free Read in check_tty_count, types: [KASAN-USE-AFTER-FREE-READ]
testing release v6.0
testing commit 4fe89d07dcc2804c8b562f6c7896a45643d34b2f gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: e73f2298f95ad928ba3f4946edb9e4aebdaac2a808bbc94ffb26601b7d03e39b
all runs: boot failed: can't ssh into the instance
unable to determine the verdict: 0 good runs (wanted 5), for bad wanted 5 in total, got 0
testing release v5.17
testing commit f443e374ae131c168a065ea1748feac6b2e76613 gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: e55e5c67535a4f4da7c32de95c2b50b45494298e512505f26c95f4ab3d15a2e9
all runs: boot failed: can't ssh into the instance
unable to determine the verdict: 0 good runs (wanted 5), for bad wanted 5 in total, got 0
testing release v5.14
testing commit 7d2a07b769330c34b4deabeed939325c77a7ec2f gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: f1ab9767684cfa91e4e49c32c10865ae507baa00845309ab428c7afdf4e10e4a
run #0: crashed: KASAN: use-after-free Read in check_tty_count
run #1: crashed: KASAN: use-after-free Read in check_tty_count
run #2: crashed: KASAN: use-after-free Read in check_tty_count
run #3: crashed: KASAN: use-after-free Read in check_tty_count
run #4: crashed: KASAN: use-after-free Read in check_tty_count
run #5: crashed: KASAN: use-after-free Read in tty_open
run #6: crashed: KASAN: use-after-free Read in check_tty_count
run #7: crashed: KASAN: use-after-free Read in check_tty_count
run #8: crashed: KASAN: use-after-free Read in tty_open
run #9: crashed: KASAN: use-after-free Read in check_tty_count
representative crash: KASAN: use-after-free Read in check_tty_count, types: [KASAN-USE-AFTER-FREE-READ]
testing release v5.11
testing commit f40ddce88593482919761f74910f42f4b84c004b gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: 11a0d5ee249bdb86b43d3be564990d2d8227bd8eff0b3ca9d271fb840f8e2b4d
run #0: crashed: KASAN: use-after-free Read in tty_open
run #1: crashed: KASAN: use-after-free Read in check_tty_count
run #2: crashed: KASAN: use-after-free Read in check_tty_count
run #3: crashed: KASAN: use-after-free Read in check_tty_count
run #4: crashed: KASAN: use-after-free Read in check_tty_count
run #5: crashed: KASAN: use-after-free Read in check_tty_count
run #6: crashed: KASAN: use-after-free Read in check_tty_count
run #7: crashed: KASAN: use-after-free Read in check_tty_count
run #8: crashed: KASAN: use-after-free Read in check_tty_count
run #9: crashed: KASAN: use-after-free Read in check_tty_count
representative crash: KASAN: use-after-free Read in tty_open, types: [KASAN-USE-AFTER-FREE-READ]
testing release v5.8
testing commit bcf876870b95592b52519ed4aafcf9d95999bc9c gcc
compiler: gcc (GCC) 8.4.1 20210217, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: cf9a46a309bce07be34c70f5f384f12773603e2fdefa48d8a82fddf47c2c4e42
all runs: boot failed: can't ssh into the instance
unable to determine the verdict: 0 good runs (wanted 5), for bad wanted 5 in total, got 0
testing release v5.5
testing commit d5226fa6dbae0569ee43ecfc08bdcd6770fc4755 gcc
compiler: gcc (GCC) 8.4.1 20210217
failed building d5226fa6dbae0569ee43ecfc08bdcd6770fc4755: scripts/extract-cert.c:46:9: warning: 'ERR_get_error_line' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations]
scripts/extract-cert.c:59:9: warning: 'ERR_get_error_line' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations]
scripts/sign-file.c:89:9: warning: 'ERR_get_error_line' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations]
scripts/sign-file.c:102:9: warning: 'ERR_get_error_line' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations]
tools/include/linux/string.h:20:15: error: redundant redeclaration of 'strlcpy' [-Werror=redundant-decls]
testing release v5.2
testing commit 0ecfebd2b52404ae0c54a878c872bb93363ada36 gcc
compiler: gcc (GCC) 8.4.1 20210217
failed building 0ecfebd2b52404ae0c54a878c872bb93363ada36: scripts/extract-cert.c:46:9: warning: 'ERR_get_error_line' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations]
scripts/extract-cert.c:59:9: warning: 'ERR_get_error_line' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations]
scripts/sign-file.c:89:9: warning: 'ERR_get_error_line' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations]
scripts/sign-file.c:102:9: warning: 'ERR_get_error_line' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations]
tools/include/linux/string.h:17:15: error: redundant redeclaration of 'strlcpy' [-Werror=redundant-decls]
testing release v4.20
testing commit 8fe28cb58bcb235034b64cbbb7550a8a43fd88be gcc
compiler: gcc (GCC) 8.4.1 20210217
failed building 8fe28cb58bcb235034b64cbbb7550a8a43fd88be: scripts/extract-cert.c:46:9: warning: 'ERR_get_error_line' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations]
scripts/extract-cert.c:59:9: warning: 'ERR_get_error_line' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations]
scripts/sign-file.c:89:9: warning: 'ERR_get_error_line' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations]
scripts/sign-file.c:102:9: warning: 'ERR_get_error_line' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations]
tools/include/linux/string.h:17:15: error: redundant redeclaration of 'strlcpy' [-Werror=redundant-decls]
testing release v4.19
testing commit 84df9525b0c27f3ebc2ebb1864fa62a97fdedb7d gcc
compiler: gcc (GCC) 8.4.1 20210217
failed building 84df9525b0c27f3ebc2ebb1864fa62a97fdedb7d: scripts/extract-cert.c:46:9: warning: 'ERR_get_error_line' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations]
scripts/extract-cert.c:59:9: warning: 'ERR_get_error_line' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations]
scripts/sign-file.c:89:9: warning: 'ERR_get_error_line' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations]
scripts/sign-file.c:102:9: warning: 'ERR_get_error_line' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations]
tools/include/linux/string.h:17:15: error: redundant redeclaration of 'strlcpy' [-Werror=redundant-decls]
revisions tested: 22, total time: 6h49m27.448532747s (build: 2h19m37.646560771s, test: 3h37m32.344981488s)
error: oldest tested release had kernel build, boot or test errors