ci2 starts bisection 2025-08-15 21:50:00.762551308 +0000 UTC m=+70218.315027890
bisecting fixing commit since 3f5b4c104b7d3267d015daf9d9681c5fe3b01224
building syzkaller on bc80e4f080d226b12fae367dc46bc54ac3681009
ensuring issue is reproducible on original commit 3f5b4c104b7d3267d015daf9d9681c5fe3b01224
testing commit 3f5b4c104b7d3267d015daf9d9681c5fe3b01224 gcc
compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
kernel signature: a4dc6ae3349e6f761b476f921bbc5ee3c992952766d54429e2ebed9e2342d767
run #0: crashed: WARNING: ODEBUG bug in smsusb_term_device
run #1: crashed: WARNING: ODEBUG bug in smsusb_term_device
run #2: crashed: WARNING: ODEBUG bug in smsusb_term_device
run #3: crashed: KASAN: slab-use-after-free Read in smscore_getbuffer
run #4: crashed: WARNING: ODEBUG bug in smsusb_term_device
run #5: crashed: KASAN: slab-use-after-free Read in smscore_getbuffer
run #6: crashed: WARNING: ODEBUG bug in smsusb_term_device
run #7: crashed: WARNING: ODEBUG bug in smsusb_term_device
run #8: crashed: KASAN: slab-use-after-free Read in dummy_timer
run #9: crashed: KASAN: slab-use-after-free Read in smscore_getbuffer
run #10: crashed: WARNING: ODEBUG bug in smsusb_term_device
run #11: crashed: WARNING: ODEBUG bug in smsusb_term_device
run #12: crashed: general protection fault in process_scheduled_works
run #13: crashed: KASAN: slab-use-after-free Read in smscore_getbuffer
run #14: crashed: WARNING: ODEBUG bug in smsusb_term_device
run #15: crashed: KASAN: slab-use-after-free Read in smscore_getbuffer
run #16: crashed: general protection fault in process_scheduled_works
run #17: crashed: WARNING: ODEBUG bug in smsusb_term_device
run #18: crashed: WARNING: ODEBUG bug in smsusb_term_device
run #19: crashed: WARNING: ODEBUG bug in smsusb_term_device
representative crash: WARNING: ODEBUG bug in smsusb_term_device, types: [WARNING 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 3f5b4c104b7d3267d015daf9d9681c5fe3b01224 gcc
compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
kernel signature: d06dfa69a43fda2e5071791f7f6a1ab57e7eb8e01c5a39a9d0be6b18252b67ea
run #0: crashed: WARNING: ODEBUG bug in smsusb_term_device
run #1: crashed: WARNING: ODEBUG bug in smsusb_term_device
run #2: crashed: WARNING: ODEBUG bug in smsusb_term_device
run #3: crashed: WARNING: ODEBUG bug in smsusb_term_device
run #4: crashed: WARNING: ODEBUG bug in smsusb_term_device
run #5: crashed: WARNING: ODEBUG bug in smsusb_term_device
run #6: crashed: WARNING: ODEBUG bug in smsusb_term_device
run #7: crashed: general protection fault in process_scheduled_works
run #8: crashed: WARNING: ODEBUG bug in smsusb_term_device
run #9: crashed: KASAN: slab-use-after-free Read in dummy_timer
representative crash: WARNING: ODEBUG bug in smsusb_term_device, types: [WARNING]
the bug reproduces without the instrumentation
disabling configs for [hang memleak ubsan locking atomic_sleep], they are not needed
kconfig minimization: base=3913 full=7684 leaves diff=2100
split chunks (needed=false): <2100>
split chunk #0 of len 2100 into 5 parts
testing without sub-chunk 1/5
disabling configs for [hang memleak ubsan locking atomic_sleep], they are not needed
testing commit 3f5b4c104b7d3267d015daf9d9681c5fe3b01224 gcc
compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
kernel signature: 7085dbf6c2d40e8f841f99dea77ac7fcdc9cea5213a65d9f59443c47b24f47cf
run #0: crashed: WARNING: ODEBUG bug in smsusb_term_device
run #1: crashed: WARNING: ODEBUG bug in smsusb_term_device
run #2: crashed: WARNING: ODEBUG bug in smsusb_term_device
run #3: crashed: WARNING: ODEBUG bug in smsusb_term_device
run #4: crashed: KASAN: slab-use-after-free Read in smscore_getbuffer
run #5: crashed: WARNING: ODEBUG bug in smsusb_term_device
run #6: crashed: WARNING: ODEBUG bug in smsusb_term_device
run #7: crashed: WARNING: ODEBUG bug in smsusb_term_device
run #8: crashed: general protection fault in process_scheduled_works
run #9: crashed: WARNING: ODEBUG bug in smsusb_term_device
representative crash: WARNING: ODEBUG bug in smsusb_term_device, types: [WARNING]
the chunk can be dropped
testing without sub-chunk 2/5
disabling configs for [ubsan locking atomic_sleep hang memleak], they are not needed
testing commit 3f5b4c104b7d3267d015daf9d9681c5fe3b01224 gcc
compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
kernel signature: 7b5756c00901cb25784d881a5d4927b1c4b91bdb045c86e9810b742a2c201e48
run #0: crashed: KASAN: slab-use-after-free Read in dummy_timer
run #1: crashed: KASAN: slab-use-after-free Read in smscore_getbuffer
run #2: crashed: KASAN: slab-use-after-free Read in smscore_getbuffer
run #3: crashed: KASAN: slab-use-after-free Read in smscore_getbuffer
run #4: crashed: KASAN: slab-use-after-free Read in smscore_getbuffer
run #5: crashed: KASAN: slab-use-after-free Read in smscore_getbuffer
run #6: crashed: general protection fault in process_scheduled_works
run #7: crashed: KASAN: slab-use-after-free Read in smscore_getbuffer
run #8: crashed: KFENCE: use-after-free read in smscore_getbuffer
run #9: crashed: KASAN: slab-use-after-free Read in smscore_getbuffer
representative crash: KASAN: slab-use-after-free Read in dummy_timer, types: [KASAN-USE-AFTER-FREE-READ]
the chunk can be dropped
testing without sub-chunk 3/5
disabling configs for [memleak ubsan locking atomic_sleep hang], they are not needed
testing commit 3f5b4c104b7d3267d015daf9d9681c5fe3b01224 gcc
compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
kernel signature: 5b584e1264712fe11570a761efed3acec72643a1c70a87f370ec8278f7734f8f
run #0: crashed: KASAN: slab-use-after-free Read in smscore_getbuffer
run #1: crashed: WARNING: ODEBUG bug in smsusb_term_device
run #2: crashed: KASAN: slab-use-after-free Read in smscore_getbuffer
run #3: crashed: KASAN: slab-use-after-free Read in smscore_getbuffer
run #4: crashed: KASAN: slab-use-after-free Read in smscore_getbuffer
run #5: crashed: KASAN: slab-use-after-free Read in smscore_getbuffer
run #6: crashed: KASAN: slab-use-after-free Read in smscore_getbuffer
run #7: crashed: KASAN: slab-use-after-free Read in smscore_getbuffer
run #8: crashed: KASAN: slab-use-after-free Read in dummy_timer
run #9: OK
representative crash: KASAN: slab-use-after-free Read in smscore_getbuffer, types: [KASAN-USE-AFTER-FREE-READ]
the chunk can be dropped
testing without sub-chunk 4/5
disabling configs for [atomic_sleep hang memleak ubsan locking], they are not needed
testing commit 3f5b4c104b7d3267d015daf9d9681c5fe3b01224 gcc
compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
kernel signature: 6e812cf0d0fb7e566c0c0acbe4a4b4b24ab9dfc813dd902aa23a771c8bacadd2
all runs: OK
false negative chance: 0.000
testing without sub-chunk 5/5
disabling configs for [locking atomic_sleep hang memleak ubsan], they are not needed
testing commit 3f5b4c104b7d3267d015daf9d9681c5fe3b01224 gcc
compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
failed building 3f5b4c104b7d3267d015daf9d9681c5fe3b01224: ld.lld: error: undefined symbol: devm_drm_of_get_bridge
minimized to 840 configs; suspects: [AF_RXRPC ARCH_ENABLE_MEMORY_HOTREMOVE ATM AX25 BCMA BLK_DEV_ZONED BPF_SYSCALL BT BT_BREDR BT_HIDP BXT_WC_PMIC_OPREGION CARDBUS CFG80211 CFG80211_WEXT CMA COMMON_CLK CONTIG_ALLOC CRYPTO_842 CRYPTO_LZ4 CRYPTO_LZ4HC CRYPTO_LZO CRYPTO_ZSTD DAX DLM DRM DVB_CORE ENCRYPTED_KEYS EXTCON FB GENEVE GPIOLIB HAMRADIO HAVE_CLK HID_NVIDIA_SHIELD HID_PLAYSTATION HID_SENSOR_HUB HID_SMARTJOYPLUS HID_STEAM HID_THRUSTMASTER HID_ZEROPLUS I2C_MUX IIO INFINIBAND INFINIBAND_ADDR_TRANS INFINIBAND_IPOIB INFINIBAND_USER_ACCESS INFINIBAND_VIRT_DMA INPUT_TABLET INPUT_TOUCHSCREEN INTEL_SCU_IPC INTEL_SOC_PMIC_BXTWC IOMMUFD IP_SCTP IRQ_REMAP KVM KVM_INTEL L2TP LEDS_CLASS_MULTICOLOR LIBNVDIMM MAC80211 MEDIA_ANALOG_TV_SUPPORT MEDIA_CAMERA_SUPPORT MEDIA_CEC_SUPPORT MEDIA_COMMON_OPTIONS MEDIA_CONTROLLER MEDIA_DIGITAL_TV_SUPPORT MEDIA_PLATFORM_SUPPORT MEDIA_RADIO_SUPPORT MEDIA_SDR_SUPPORT MEDIA_SUPPORT MEDIA_TEST_SUPPORT MEDIA_USB_SUPPORT MEMORY_HOTPLUG MEMORY_HOTREMOVE MFD_DLN2 MFD_INTEL_PMC_BXT MFD_MT6360 MFD_MT6370 MFD_RETU MFD_VIPERBOARD MMC MTD MTD_UBI NETFILTER_CONNCOUNT NET_IPGRE NET_IPGRE_DEMUX NFS_V4_1 NLS_CODEPAGE_857 NLS_CODEPAGE_860 NLS_CODEPAGE_861 NLS_CODEPAGE_862 NLS_CODEPAGE_863 NLS_CODEPAGE_864 NLS_CODEPAGE_865 NLS_CODEPAGE_866 NLS_CODEPAGE_869 NLS_CODEPAGE_874 NLS_CODEPAGE_932 NLS_CODEPAGE_936 NLS_CODEPAGE_949 NLS_CODEPAGE_950 NLS_ISO8859_13 NLS_ISO8859_14 NLS_ISO8859_15 NLS_ISO8859_2 NLS_ISO8859_3 NLS_ISO8859_4 NLS_ISO8859_5 NLS_ISO8859_6 NLS_ISO8859_7 NLS_ISO8859_8 NLS_ISO8859_9 NLS_KOI8_R NLS_KOI8_U NLS_MAC_CELTIC NLS_MAC_CENTEURO NLS_MAC_CROATIAN NLS_MAC_CYRILLIC NLS_MAC_GAELIC NLS_MAC_GREEK NLS_MAC_ICELAND NLS_MAC_INUIT NLS_MAC_ROMAN NLS_MAC_ROMANIAN NLS_MAC_TURKISH NLS_UCS2_UTILS NOP_USB_XCEIV NOZOMI NTFS3_FS NTFS3_FS_POSIX_ACL NTFS3_LZX_XPRESS NTFS_FS NTFS_RW NULL_TTY NUMA_BALANCING NUMA_BALANCING_DEFAULT_ENABLED NUMA_EMU NUMA_KEEP_MEMINFO NVDIMM_DAX NVDIMM_KEYS NVDIMM_PFN NVIDIA_SHIELD_FF NVME_CORE NVME_FABRICS NVME_FC NVME_MULTIPATH NVME_RDMA NVME_TARGET NVME_TARGET_FC NVME_TARGET_FCLOOP NVME_TARGET_LOOP NVME_TARGET_RDMA NVME_TARGET_TCP NVME_TCP N_GSM N_HDLC OCFS2_DEBUG_FS OCFS2_FS OCFS2_FS_O2CB OCFS2_FS_STATS OCFS2_FS_USERSPACE_CLUSTER OF_GPIO OF_PMEM OMFS_FS OPENVSWITCH OPENVSWITCH_GENEVE OPENVSWITCH_GRE OPENVSWITCH_VXLAN ORANGEFS_FS OSF_PARTITION OVERLAY_FS OVERLAY_FS_DEBUG OVERLAY_FS_INDEX OVERLAY_FS_REDIRECT_ALWAYS_FOLLOW OVERLAY_FS_REDIRECT_DIR PACKET_DIAG PADATA PAGE_IDLE_FLAG PAGE_POOL PAGE_REPORTING PAHOLE_HAS_BTF_TAG PAHOLE_HAS_LANG_EXCLUDE PAHOLE_HAS_SPLIT_BTF PARPORT PARPORT_NOT_PC PARTITION_ADVANCED PCCARD PCCARD_NONSTATIC PCIEAER PCI_ENDPOINT PCI_IOV PCMCIA PCMCIA_LOAD_CIS PERCPU_STATS PERSISTENT_KEYRINGS PHONET PHYLINK PHY_CPCAP_USB PHY_QCOM_USB_HS PHY_QCOM_USB_HSIC PHY_SAMSUNG_USB2 PHY_TUSB1210 PKCS7_TEST_KEY PKCS8_PRIVATE_KEY_PARSER PLAYSTATION_FF PLFXLC PMIC_OPREGION PM_CLK PNFS_BLOCK PNFS_FILE_LAYOUT PNFS_FLEXFILE_LAYOUT PPP PPPOATM PPPOE PPPOE_HASH_BITS_4 PPPOL2TP PPP_ASYNC PPP_BSDCOMP PPP_DEFLATE PPP_FILTER PPP_MPPE PPP_MULTILINK PPP_SYNC_TTY PPTP PREEMPT PREEMPT_NOTIFIERS PRISM2_USB PROC_CHILDREN PSI PSTORE PSTORE_COMPRESS QCOM_QMI_HELPERS QNX4FS_FS QNX6FS_FS QRTR QRTR_TUN R8712U RADIO_ADAPTERS RADIO_SHARK RADIO_SHARK2 RADIO_SI470X RADIO_SI4713 RADIO_TEA575X RAID6_PQ RAID_ATTRS RC_ATI_REMOTE RC_CORE RC_DEVICES RC_XBOX_DVD RDMA_RXE RDMA_SIW RDS RDS_RDMA RDS_TCP READ_ONLY_THP_FOR_FS REALTEK_AUTOPM REED_SOLOMON REED_SOLOMON_DEC8 REGMAP REGMAP_I2C REGMAP_IRQ REGMAP_MMIO REGULATOR REGULATOR_FIXED_VOLTAGE REGULATOR_TWL4030 REISERFS_FS REISERFS_FS_POSIX_ACL REISERFS_FS_SECURITY REISERFS_FS_XATTR REISERFS_PROC_INFO RESET_CONTROLLER RFKILL RFKILL_INPUT RFKILL_LEDS RMI4_2D_SENSOR RMI4_CORE RMI4_F03 RMI4_F03_SERIO RMI4_F11 RMI4_F12 RMI4_F30 ROMFS_BACKED_BY_BOTH ROMFS_FS ROMFS_ON_BLOCK ROMFS_ON_MTD ROSE RTC_DRV_HID_SENSOR_TIME RXKAD SCHED_CORE SCREEN_INFO SCSI_FC_ATTRS SCSI_HPSA SCSI_ISCSI_ATTRS SCSI_LOGGING SCSI_NETLINK SCSI_SAS_ATA SCSI_SAS_ATTRS SCSI_SAS_LIBSAS SCSI_SCAN_ASYNC SCSI_SRP_ATTRS SCTP_COOKIE_HMAC_MD5 SCTP_COOKIE_HMAC_SHA1 SCTP_DEFAULT_COOKIE_HMAC_MD5 SECONDARY_TRUSTED_KEYRING SECURITY_INFINIBAND SECURITY_NETWORK_XFRM SENSORS_AQUACOMPUTER_D5NEXT SENSORS_CORSAIR_CPRO SENSORS_CORSAIR_PSU SENSORS_NZXT_KRAKEN2 SENSORS_NZXT_SMART2 SERIAL_DEV_BUS SERIAL_DEV_CTRL_TTYPORT SERIAL_MCTRL_GPIO SGI_PARTITION SIGNATURE SIGNED_PE_FILE_VERIFICATION SLHC SLIP SLIP_COMPRESSED SLIP_MODE_SLIP6 SLIP_SMART SMARTJOYPLUS_FF SMBFS SMB_SERVER SMC SMC_DIAG SMSC_PHY SMS_SDIO_DRV SMS_SIANO_DEBUGFS SMS_SIANO_MDTV SMS_SIANO_RC SMS_USB_DRV SND SND_ALOOP SND_BCD2000 SND_CTL_FAST_LOOKUP SND_CTL_LED SND_DEBUG SND_DMA_SGBUF SND_DRIVERS SND_DUMMY SND_DYNAMIC_MINORS SND_HDA SND_HDA_CODEC_ANALOG SND_HDA_CODEC_CA0110 SND_HDA_CODEC_CA0132 SND_HDA_CODEC_CIRRUS SND_HDA_CODEC_CMEDIA SND_HDA_CODEC_CONEXANT SND_HDA_CODEC_HDMI SND_HDA_CODEC_REALTEK SND_HDA_CODEC_SI3054 SND_HDA_CODEC_SIGMATEL SND_HDA_CODEC_VIA SND_HDA_COMPONENT SND_HDA_CORE SND_HDA_GENERIC SND_HDA_GENERIC_LEDS SND_HDA_HWDEP SND_HDA_I915 SND_HDA_INPUT_BEEP SND_HDA_INTEL SND_HDA_PATCH_LOADER SND_HDA_RECONFIG SND_HRTIMER SND_HWDEP SND_INTEL_DSP_CONFIG SND_INTEL_NHLT SND_INTEL_SOUNDWIRE_ACPI SND_JACK SND_JACK_INPUT_DEV SND_MIXER_OSS SND_OSSEMUL SND_PCI SND_PCM SND_PCMCIA SND_PCM_OSS SND_PCM_OSS_PLUGINS SND_PCM_TIMER SND_PCM_XRUN_DEBUG SND_PROC_FS SND_RAWMIDI SND_SEQUENCER SND_SEQUENCER_OSS SND_SEQ_DEVICE SND_SEQ_DUMMY SND_SEQ_HRTIMER_DEFAULT SND_SEQ_MIDI SND_SEQ_MIDI_EVENT SND_SEQ_VIRMIDI SND_SUPPORT_OLD_API SND_TIMER SND_UMP SND_UMP_LEGACY_RAWMIDI SND_USB SND_USB_6FIRE SND_USB_AUDIO SND_USB_AUDIO_MIDI_V2 SND_USB_AUDIO_USE_MEDIA_CONTROLLER SND_USB_CAIAQ SND_USB_CAIAQ_INPUT SND_USB_HIFACE SND_USB_LINE6 SND_USB_POD SND_USB_PODHD SND_USB_TONEPORT SND_USB_UA101 SND_USB_US122L SND_USB_USX2Y SND_USB_VARIAX SND_VERBOSE_PROCFS SND_VIRMIDI SND_VIRTIO SND_VMASTER SND_X86 SOCK_VALIDATE_XMIT SOLARIS_X86_PARTITION SONY_FF SOUND SOUND_OSS_CORE SOUND_OSS_CORE_PRECLAIM SPI SPI_DLN2 SPI_DYNAMIC SPI_MASTER SQUASHFS SQUASHFS_4K_DEVBLK_SIZE SQUASHFS_COMPILE_DECOMP_SINGLE SQUASHFS_DECOMP_SINGLE SQUASHFS_FILE_DIRECT SQUASHFS_LZ4 SQUASHFS_LZO SQUASHFS_XATTR SQUASHFS_XZ SQUASHFS_ZLIB SQUASHFS_ZSTD SSB SSB_PCIHOST_POSSIBLE SSB_PCMCIAHOST_POSSIBLE SSB_SDIOHOST_POSSIBLE STAGING STEAM_FF STP STREAM_PARSER SUNRPC_BACKCHANNEL SUN_PARTITION SW_SYNC SYSFB SYSV68_PARTITION SYSV_FS TABLET_USB_ACECAD TABLET_USB_AIPTEK TABLET_USB_HANWANG TABLET_USB_KBTAB TABLET_USB_PEGASUS TAHVO_USB TAHVO_USB_HOST_BY_DEFAULT TAP TARGET_CORE TASKS_TRACE_RCU TCG_CRB TCG_TIS TCG_TIS_CORE TCG_TPM TCP_CONG_BBR TCP_CONG_BIC TCP_CONG_CDG TCP_CONG_DCTCP TCP_CONG_HSTCP TCP_CONG_HTCP TCP_CONG_HYBLA TCP_CONG_ILLINOIS TCP_CONG_LP TCP_CONG_NV TCP_CONG_SCALABLE TCP_CONG_VEGAS TCP_CONG_VENO TCP_CONG_WESTWOOD TCP_CONG_YEAH TEXTSEARCH TEXTSEARCH_BM TEXTSEARCH_FSM TEXTSEARCH_KMP THERMAL_NETLINK THP_SWAP THRUSTMASTER_FF TIPC TIPC_CRYPTO TIPC_DIAG TIPC_MEDIA_IB TIPC_MEDIA_UDP TLS TLS_TOE TMPFS_QUOTA TOOLS_SUPPORT_RELR TOUCHSCREEN_SUR40 TOUCHSCREEN_USB_3M TOUCHSCREEN_USB_COMPOSITE TOUCHSCREEN_USB_DMC_TSC10 TOUCHSCREEN_USB_E2I TOUCHSCREEN_USB_EASYTOUCH TOUCHSCREEN_USB_EGALAX TOUCHSCREEN_USB_ELO TOUCHSCREEN_USB_ETT_TC45USB TOUCHSCREEN_USB_ETURBO TOUCHSCREEN_USB_GENERAL_TOUCH TOUCHSCREEN_USB_GOTOP TOUCHSCREEN_USB_GUNZE TOUCHSCREEN_USB_IDEALTEK TOUCHSCREEN_USB_IRTOUCH TOUCHSCREEN_USB_ITM TOUCHSCREEN_USB_JASTEC TOUCHSCREEN_USB_NEXIO TOUCHSCREEN_USB_PANJIT TOUCHSCREEN_USB_ZYTRONIC TRANSPARENT_HUGEPAGE TRANSPARENT_HUGEPAGE_MADVISE TTPCI_EEPROM TTY_PRINTK TUN TUN_VNET_CROSS_LE TWL4030_CORE TYPEC TYPEC_ANX7411 TYPEC_DP_ALTMODE TYPEC_FUSB302 TYPEC_HD3SS3220 TYPEC_MT6360 TYPEC_MUX_FSA4480 TYPEC_MUX_GPIO_SBU TYPEC_MUX_INTEL_PMC TYPEC_MUX_NB7VPQ904M TYPEC_NVIDIA_ALTMODE TYPEC_RT1711H TYPEC_RT1719 TYPEC_STUSB160X TYPEC_TCPCI TYPEC_TCPCI_MAXIM TYPEC_TCPCI_MT6370 TYPEC_TCPM TYPEC_TPS6598X TYPEC_UCSI TYPEC_WCOVE TYPEC_WUSB3801 UBIFS_ATIME_SUPPORT UBIFS_FS UBIFS_FS_ADVANCED_COMPR UBIFS_FS_LZO UBIFS_FS_SECURITY UBIFS_FS_XATTR UBIFS_FS_ZLIB UBIFS_FS_ZSTD UCSI_ACPI UCSI_CCG UCSI_STM32G0 UDF_FS UDMABUF UFS_FS UFS_FS_WRITE UHID ULTRIX_PARTITION UNICODE UNIXWARE_DISKLABEL UNIX_DIAG USB4 USB4_NET USBIP_CORE USBIP_HOST USBIP_VHCI_HCD USBIP_VUDC USBPCWATCHDOG USB_ACM 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_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_MV_U3D USB_MV_UDC USB_NET2272 USB_NET2272_DMA 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_RNDIS_WLAN USB_NET_SMSC75XX USB_NET_SMSC95XX USB_NET_SR9700 USB_NET_SR9800 USB_NET_ZAURUS USB_OHCI_HCD_PLATFORM USB_OTG USB_OTG_FSM USB_OXU210HP_HCD USB_PEGASUS USB_PULSE8_CEC USB_PWC USB_PWC_INPUT_EVDEV USB_PXA27X USB_R8A66597 USB_R8A66597_HCD USB_RAINSHADOW_CEC USB_RAREMONO USB_RAW_GADGET USB_ROLE_SWITCH 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_REALTEK 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 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 VXLAN 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 XARRAY_MULTI XDP_SOCKETS XDP_SOCKETS_DIAG XFRM_ESPINTCP XFRM_INTERFACE XFRM_IPCOMP XFRM_MIGRATE XFRM_OFFLOAD XFRM_STATISTICS XFRM_SUB_POLICY XFRM_USER_COMPAT XFS_FS XFS_POSIX_ACL XFS_QUOTA XFS_RT XILLYBUS_CLASS XILLYUSB XOR_BLOCKS YENTA YENTA_ENE_TUNE YENTA_O2 YENTA_RICOH YENTA_TI YENTA_TOSHIBA ZBUD ZEROPLUS_FF ZLIB_DEFLATE ZONEFS_FS ZONE_DEVICE ZPOOL ZRAM ZRAM_DEF_COMP_LZORLE ZSMALLOC ZSTD_COMPRESS ZSWAP ZSWAP_COMPRESSOR_DEFAULT_LZO ZSWAP_DEFAULT_ON ZSWAP_ZPOOL_DEFAULT_ZBUD]
disabling configs for [locking atomic_sleep hang memleak ubsan], they are not needed
testing current HEAD bb9c90ab9c5a1a933a0dfd302a3fde73642b2b06
testing commit bb9c90ab9c5a1a933a0dfd302a3fde73642b2b06 gcc
compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
kernel signature: 27fe4c20d404c4d98954de1b0eb84b80ffd0c2d5cf60a0fac8bedbb3c99ef206
run #0: crashed: KASAN: slab-use-after-free Read in dummy_timer
run #1: crashed: KASAN: slab-use-after-free Read in smscore_getbuffer
run #2: crashed: general protection fault in process_scheduled_works
run #3: crashed: KASAN: slab-use-after-free Read in smscore_getbuffer
run #4: crashed: KASAN: slab-use-after-free Read in dummy_timer
run #5: crashed: KASAN: slab-use-after-free Read in smscore_getbuffer
run #6: crashed: KASAN: slab-use-after-free Read in dummy_timer
run #7: crashed: KASAN: slab-use-after-free Read in smscore_getbuffer
run #8: crashed: KASAN: slab-use-after-free Read in smscore_getbuffer
run #9: OK
representative crash: KASAN: slab-use-after-free Read in dummy_timer, types: [KASAN-USE-AFTER-FREE-READ]
crash still not fixed/happens on the oldest tested release
revisions tested: 7, total time: 1h51m17.938905344s (build: 51m47.177366448s, test: 55m18.928767625s)
crash still not fixed or there were kernel test errors
commit msg: Linux 6.6.102
crash: KASAN: slab-use-after-free Read in dummy_timer
smsusb:smsusb_onresponse: error, urb status -71, 0 bytes
==================================================================
BUG: KASAN: slab-use-after-free in dummy_timer+0x217f/0x29a0 drivers/usb/gadget/udc/dummy_hcd.c:1849
Read of size 4 at addr ffff8880786fea54 by task kworker/1:0/23
CPU: 1 PID: 23 Comm: kworker/1:0 Not tainted 6.6.102-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Workqueue: usb_hub_wq hub_event
Call Trace:
dump_stack_lvl+0xe0/0x160 lib/dump_stack.c:106
print_address_description mm/kasan/report.c:364 [inline]
print_report+0xac/0x220 mm/kasan/report.c:468
kasan_report+0x117/0x150 mm/kasan/report.c:581
dummy_timer+0x217f/0x29a0 drivers/usb/gadget/udc/dummy_hcd.c:1849
__run_hrtimer kernel/time/hrtimer.c:1755 [inline]
__hrtimer_run_queues+0x3cc/0x800 kernel/time/hrtimer.c:1819
hrtimer_run_softirq+0x18f/0x440 kernel/time/hrtimer.c:1836
handle_softirqs+0x1af/0x540 kernel/softirq.c:578
__do_softirq kernel/softirq.c:612 [inline]
invoke_softirq kernel/softirq.c:452 [inline]
__irq_exit_rcu+0x44/0xe0 kernel/softirq.c:661
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1088 [inline]
sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1088
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687
RIP: 0010:unwind_next_frame+0x777/0x2350 arch/x86/kernel/unwind_orc.c:521
Code: e8 5e 17 74 00 49 8b 3e 48 85 ff 0f 84 00 0e 00 00 48 83 c7 38 e8 d9 27 00 00 49 89 c7 48 8b 34 24 e9 b7 02 00 00 4c 8d 73 40 <4c> 89 f0 48 c1 e8 03 42 80 3c 28 00 74 11 4c 89 f7 e8 23 17 74 00
RSP: 0018:ffffc900001d6500 EFLAGS: 00000246
RAX: ffffc900001d65fd RBX: ffffc900001d65c8 RCX: ffffffff8914370c
RDX: ffffffff8980a310 RSI: ffffffff8980a314 RDI: ffffffff812bfabe
RBP: 0000000000000000 R08: 0000000000000001 R09: 000000000000000b
R10: ffffc900001d6618 R11: fffff5200003acc5 R12: 1ffff9200003acc0
R13: dffffc0000000000 R14: ffffc900001d6608 R15: ffffc900001d6600
arch_stack_walk+0x110/0x140 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x9c/0xe0 kernel/stacktrace.c:122
kasan_save_stack+0x3e/0x60 mm/kasan/common.c:45
__kasan_record_aux_stack+0xaf/0xc0 mm/kasan/generic.c:492
__call_rcu_common kernel/rcu/tree.c:2721 [inline]
call_rcu+0x14b/0x7e0 kernel/rcu/tree.c:2837
kernfs_put+0x177/0x2e0 fs/kernfs/dir.c:578
kernfs_remove_by_name_ns+0xce/0x120 fs/kernfs/dir.c:1696
kernfs_remove_by_name include/linux/kernfs.h:624 [inline]
sysfs_unmerge_group+0xe1/0x120 fs/sysfs/group.c:372
rpm_sysfs_remove drivers/base/power/sysfs.c:826 [inline]
dpm_sysfs_remove+0x52/0xa0 drivers/base/power/sysfs.c:835
device_del+0x1ef/0x7a0 drivers/base/core.c:3847
cdev_device_del+0x22/0xd0 fs/char_dev.c:580
media_devnode_unregister+0x2b/0x70 drivers/media/mc/mc-devnode.c:284
media_device_unregister+0x2df/0x390 drivers/media/mc/mc-device.c:832
smsusb_init_device drivers/media/usb/siano/smsusb.c:493 [inline]
smsusb_probe+0x15ea/0x1c50 drivers/media/usb/siano/smsusb.c:569
usb_probe_interface+0x47f/0x980 drivers/usb/core/driver.c:396
call_driver_probe drivers/base/dd.c:-1 [inline]
really_probe+0x2ff/0xb80 drivers/base/dd.c:658
__driver_probe_device+0x138/0x2c0 drivers/base/dd.c:800
driver_probe_device+0x4a/0x390 drivers/base/dd.c:830
__device_attach_driver+0x2cb/0x3f0 drivers/base/dd.c:958
bus_for_each_drv+0x21a/0x290 drivers/base/bus.c:459
__device_attach+0x1dd/0x350 drivers/base/dd.c:1030
bus_probe_device+0x128/0x200 drivers/base/bus.c:534
device_add+0x534/0xa30 drivers/base/core.c:3683
usb_set_configuration+0x152f/0x1ad0 drivers/usb/core/message.c:2207
usb_generic_driver_probe+0x69/0x100 drivers/usb/core/generic.c:238
usb_probe_device+0xbf/0x1d0 drivers/usb/core/driver.c:293
call_driver_probe drivers/base/dd.c:-1 [inline]
really_probe+0x2ff/0xb80 drivers/base/dd.c:658
__driver_probe_device+0x138/0x2c0 drivers/base/dd.c:800
driver_probe_device+0x4a/0x390 drivers/base/dd.c:830
__device_attach_driver+0x2cb/0x3f0 drivers/base/dd.c:958
bus_for_each_drv+0x21a/0x290 drivers/base/bus.c:459
__device_attach+0x1dd/0x350 drivers/base/dd.c:1030
bus_probe_device+0x128/0x200 drivers/base/bus.c:534
device_add+0x534/0xa30 drivers/base/core.c:3683
usb_new_device+0xa2a/0x1380 drivers/usb/core/hub.c:2660
hub_port_connect drivers/usb/core/hub.c:5529 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5669 [inline]
port_event drivers/usb/core/hub.c:5833 [inline]
hub_event+0x20bd/0x3b10 drivers/usb/core/hub.c:5915
process_one_work kernel/workqueue.c:2634 [inline]
process_scheduled_works+0x96d/0x1290 kernel/workqueue.c:2711
worker_thread+0x88b/0xce0 kernel/workqueue.c:2792
kthread+0x24d/0x2c0 kernel/kthread.c:388
ret_from_fork+0x2f/0x60 arch/x86/kernel/process.c:152
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293
Allocated by task 23:
kasan_save_stack mm/kasan/common.c:45 [inline]
kasan_set_track+0x4e/0x70 mm/kasan/common.c:52
____kasan_kmalloc mm/kasan/common.c:374 [inline]
__kasan_kmalloc+0x8f/0xa0 mm/kasan/common.c:383
kmalloc include/linux/slab.h:600 [inline]
kzalloc include/linux/slab.h:721 [inline]
smsusb_init_device drivers/media/usb/siano/smsusb.c:397 [inline]
smsusb_probe+0x87a/0x1c50 drivers/media/usb/siano/smsusb.c:569
usb_probe_interface+0x47f/0x980 drivers/usb/core/driver.c:396
call_driver_probe drivers/base/dd.c:-1 [inline]
really_probe+0x2ff/0xb80 drivers/base/dd.c:658
__driver_probe_device+0x138/0x2c0 drivers/base/dd.c:800
driver_probe_device+0x4a/0x390 drivers/base/dd.c:830
__device_attach_driver+0x2cb/0x3f0 drivers/base/dd.c:958
bus_for_each_drv+0x21a/0x290 drivers/base/bus.c:459
__device_attach+0x1dd/0x350 drivers/base/dd.c:1030
bus_probe_device+0x128/0x200 drivers/base/bus.c:534
device_add+0x534/0xa30 drivers/base/core.c:3683
usb_set_configuration+0x152f/0x1ad0 drivers/usb/core/message.c:2207
usb_generic_driver_probe+0x69/0x100 drivers/usb/core/generic.c:238
usb_probe_device+0xbf/0x1d0 drivers/usb/core/driver.c:293
call_driver_probe drivers/base/dd.c:-1 [inline]
really_probe+0x2ff/0xb80 drivers/base/dd.c:658
__driver_probe_device+0x138/0x2c0 drivers/base/dd.c:800
driver_probe_device+0x4a/0x390 drivers/base/dd.c:830
__device_attach_driver+0x2cb/0x3f0 drivers/base/dd.c:958
bus_for_each_drv+0x21a/0x290 drivers/base/bus.c:459
__device_attach+0x1dd/0x350 drivers/base/dd.c:1030
bus_probe_device+0x128/0x200 drivers/base/bus.c:534
device_add+0x534/0xa30 drivers/base/core.c:3683
usb_new_device+0xa2a/0x1380 drivers/usb/core/hub.c:2660
hub_port_connect drivers/usb/core/hub.c:5529 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5669 [inline]
port_event drivers/usb/core/hub.c:5833 [inline]
hub_event+0x20bd/0x3b10 drivers/usb/core/hub.c:5915
process_one_work kernel/workqueue.c:2634 [inline]
process_scheduled_works+0x96d/0x1290 kernel/workqueue.c:2711
worker_thread+0x88b/0xce0 kernel/workqueue.c:2792
kthread+0x24d/0x2c0 kernel/kthread.c:388
ret_from_fork+0x2f/0x60 arch/x86/kernel/process.c:152
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293
Freed by task 23:
kasan_save_stack mm/kasan/common.c:45 [inline]
kasan_set_track+0x4e/0x70 mm/kasan/common.c:52
kasan_save_free_info+0x2e/0x50 mm/kasan/generic.c:522
____kasan_slab_free+0x126/0x1e0 mm/kasan/common.c:236
kasan_slab_free include/linux/kasan.h:164 [inline]
slab_free_hook mm/slub.c:1806 [inline]
slab_free_freelist_hook+0x130/0x1b0 mm/slub.c:1832
slab_free mm/slub.c:3816 [inline]
__kmem_cache_free+0xba/0x1f0 mm/slub.c:3829
smsusb_term_device+0x170/0x1e0 drivers/media/usb/siano/smsusb.c:352
smsusb_init_device drivers/media/usb/siano/smsusb.c:491 [inline]
smsusb_probe+0x15e2/0x1c50 drivers/media/usb/siano/smsusb.c:569
usb_probe_interface+0x47f/0x980 drivers/usb/core/driver.c:396
call_driver_probe drivers/base/dd.c:-1 [inline]
really_probe+0x2ff/0xb80 drivers/base/dd.c:658
__driver_probe_device+0x138/0x2c0 drivers/base/dd.c:800
driver_probe_device+0x4a/0x390 drivers/base/dd.c:830
__device_attach_driver+0x2cb/0x3f0 drivers/base/dd.c:958
bus_for_each_drv+0x21a/0x290 drivers/base/bus.c:459
__device_attach+0x1dd/0x350 drivers/base/dd.c:1030
bus_probe_device+0x128/0x200 drivers/base/bus.c:534
device_add+0x534/0xa30 drivers/base/core.c:3683
usb_set_configuration+0x152f/0x1ad0 drivers/usb/core/message.c:2207
usb_generic_driver_probe+0x69/0x100 drivers/usb/core/generic.c:238
usb_probe_device+0xbf/0x1d0 drivers/usb/core/driver.c:293
call_driver_probe drivers/base/dd.c:-1 [inline]
really_probe+0x2ff/0xb80 drivers/base/dd.c:658
__driver_probe_device+0x138/0x2c0 drivers/base/dd.c:800
driver_probe_device+0x4a/0x390 drivers/base/dd.c:830
__device_attach_driver+0x2cb/0x3f0 drivers/base/dd.c:958
bus_for_each_drv+0x21a/0x290 drivers/base/bus.c:459
__device_attach+0x1dd/0x350 drivers/base/dd.c:1030
bus_probe_device+0x128/0x200 drivers/base/bus.c:534
device_add+0x534/0xa30 drivers/base/core.c:3683
usb_new_device+0xa2a/0x1380 drivers/usb/core/hub.c:2660
hub_port_connect drivers/usb/core/hub.c:5529 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5669 [inline]
port_event drivers/usb/core/hub.c:5833 [inline]
hub_event+0x20bd/0x3b10 drivers/usb/core/hub.c:5915
process_one_work kernel/workqueue.c:2634 [inline]
process_scheduled_works+0x96d/0x1290 kernel/workqueue.c:2711
worker_thread+0x88b/0xce0 kernel/workqueue.c:2792
kthread+0x24d/0x2c0 kernel/kthread.c:388
ret_from_fork+0x2f/0x60 arch/x86/kernel/process.c:152
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293
Last potentially related work creation:
kasan_save_stack+0x3e/0x60 mm/kasan/common.c:45
__kasan_record_aux_stack+0xaf/0xc0 mm/kasan/generic.c:492
insert_work+0x38/0x260 kernel/workqueue.c:1651
__queue_work+0x8ac/0xb00 kernel/workqueue.c:1800
queue_work_on+0xbe/0x140 kernel/workqueue.c:1835
__usb_hcd_giveback_urb+0x21d/0x370 drivers/usb/core/hcd.c:1650
dummy_timer+0x768/0x29a0 drivers/usb/gadget/udc/dummy_hcd.c:1993
__run_hrtimer kernel/time/hrtimer.c:1755 [inline]
__hrtimer_run_queues+0x3cc/0x800 kernel/time/hrtimer.c:1819
hrtimer_run_softirq+0x18f/0x440 kernel/time/hrtimer.c:1836
handle_softirqs+0x1af/0x540 kernel/softirq.c:578
__do_softirq kernel/softirq.c:612 [inline]
invoke_softirq kernel/softirq.c:452 [inline]
__irq_exit_rcu+0x44/0xe0 kernel/softirq.c:661
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1088 [inline]
sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1088
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687
Second to last potentially related work creation:
kasan_save_stack+0x3e/0x60 mm/kasan/common.c:45
__kasan_record_aux_stack+0xaf/0xc0 mm/kasan/generic.c:492
insert_work+0x38/0x260 kernel/workqueue.c:1651
__queue_work+0x8ac/0xb00 kernel/workqueue.c:1800
queue_work_on+0xbe/0x140 kernel/workqueue.c:1835
__usb_hcd_giveback_urb+0x21d/0x370 drivers/usb/core/hcd.c:1650
dummy_timer+0x768/0x29a0 drivers/usb/gadget/udc/dummy_hcd.c:1993
__run_hrtimer kernel/time/hrtimer.c:1755 [inline]
__hrtimer_run_queues+0x3cc/0x800 kernel/time/hrtimer.c:1819
hrtimer_run_softirq+0x18f/0x440 kernel/time/hrtimer.c:1836
handle_softirqs+0x1af/0x540 kernel/softirq.c:578
__do_softirq kernel/softirq.c:612 [inline]
invoke_softirq kernel/softirq.c:452 [inline]
__irq_exit_rcu+0x44/0xe0 kernel/softirq.c:661
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1088 [inline]
sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1088
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687
The buggy address belongs to the object at ffff8880786fe000
which belongs to the cache kmalloc-4k of size 4096
The buggy address is located 2644 bytes inside of
freed 4096-byte region [ffff8880786fe000, ffff8880786ff000)
The buggy address belongs to the physical page:
page:ffffea0001e1be00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x786f8
head:ffffea0001e1be00 order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0xfff00000000840(slab|head|node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 00fff00000000840 ffff88800e042140 dead000000000122 0000000000000000
raw: 0000000000000000 0000000000040004 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Unmovable, gfp_mask 0x1d2040(__GFP_IO|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL), pid 4628, tgid 4628 (udevd), ts 90971817615, free_ts 90430386860
set_page_owner include/linux/page_owner.h:31 [inline]
post_alloc_hook+0xed/0x120 mm/page_alloc.c:1554
prep_new_page mm/page_alloc.c:1561 [inline]
get_page_from_freelist+0x2423/0x2560 mm/page_alloc.c:3191
__alloc_pages+0x1e3/0x460 mm/page_alloc.c:4457
alloc_slab_page+0x5d/0x170 mm/slub.c:1876
allocate_slab mm/slub.c:2023 [inline]
new_slab+0x87/0x280 mm/slub.c:2076
___slab_alloc+0xa32/0xfc0 mm/slub.c:3230
__slab_alloc mm/slub.c:3329 [inline]
__slab_alloc_node mm/slub.c:3382 [inline]
slab_alloc_node mm/slub.c:3475 [inline]
__kmem_cache_alloc_node+0x19c/0x250 mm/slub.c:3524
__do_kmalloc_node mm/slab_common.c:1006 [inline]
__kmalloc+0x97/0x1f0 mm/slab_common.c:1020
kmalloc include/linux/slab.h:604 [inline]
tomoyo_realpath_from_path+0xf1/0x550 security/tomoyo/realpath.c:251
tomoyo_get_realpath security/tomoyo/file.c:151 [inline]
tomoyo_path_perm+0x1d5/0x480 security/tomoyo/file.c:822
security_inode_getattr+0x7f/0xf0 security/security.c:2153
vfs_getattr fs/stat.c:173 [inline]
vfs_statx+0x10f/0x5b0 fs/stat.c:248
vfs_fstatat+0xc9/0xf0 fs/stat.c:299
__do_sys_newfstatat fs/stat.c:463 [inline]
__se_sys_newfstatat+0xc1/0x310 fs/stat.c:457
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
page last free stack trace:
reset_page_owner include/linux/page_owner.h:24 [inline]
free_pages_prepare mm/page_alloc.c:1154 [inline]
free_unref_page_prepare+0x6f9/0x810 mm/page_alloc.c:2336
free_unref_page+0x32/0x290 mm/page_alloc.c:2429
discard_slab mm/slub.c:2122 [inline]
__unfreeze_partials+0x1ac/0x1f0 mm/slub.c:2662
put_cpu_partial+0x14e/0x200 mm/slub.c:2738
__slab_free+0x297/0x380 mm/slub.c:3686
qlink_free mm/kasan/quarantine.c:166 [inline]
qlist_free_all+0x75/0xe0 mm/kasan/quarantine.c:185
kasan_quarantine_reduce+0x143/0x160 mm/kasan/quarantine.c:292
__kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:305
kasan_slab_alloc include/linux/kasan.h:188 [inline]
slab_post_alloc_hook+0x66/0x430 mm/slab.h:767
slab_alloc_node mm/slub.c:3485 [inline]
__kmem_cache_alloc_node+0x13e/0x250 mm/slub.c:3524
kmalloc_trace+0x2a/0xe0 mm/slab_common.c:1098
kmalloc include/linux/slab.h:600 [inline]
usb_control_msg+0x6f/0x3a0 drivers/usb/core/message.c:144
get_port_status drivers/usb/core/hub.c:609 [inline]
hub_ext_port_status+0xee/0x5c0 drivers/usb/core/hub.c:626
usb_hub_port_status drivers/usb/core/hub.c:648 [inline]
hub_port_debounce+0x1c6/0x260 drivers/usb/core/hub.c:4665
hub_port_debounce_be_stable drivers/usb/core/hub.h:181 [inline]
hub_port_connect drivers/usb/core/hub.c:5381 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5669 [inline]
port_event drivers/usb/core/hub.c:5833 [inline]
hub_event+0x170a/0x3b10 drivers/usb/core/hub.c:5915
process_one_work kernel/workqueue.c:2634 [inline]
process_scheduled_works+0x96d/0x1290 kernel/workqueue.c:2711
Memory state around the buggy address:
ffff8880786fe900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff8880786fe980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff8880786fea00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff8880786fea80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff8880786feb00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
----------------
Code disassembly (best guess):
0: e8 5e 17 74 00 call 0x741763
5: 49 8b 3e mov (%r14),%rdi
8: 48 85 ff test %rdi,%rdi
b: 0f 84 00 0e 00 00 je 0xe11
11: 48 83 c7 38 add $0x38,%rdi
15: e8 d9 27 00 00 call 0x27f3
1a: 49 89 c7 mov %rax,%r15
1d: 48 8b 34 24 mov (%rsp),%rsi
21: e9 b7 02 00 00 jmp 0x2dd
26: 4c 8d 73 40 lea 0x40(%rbx),%r14
* 2a: 4c 89 f0 mov %r14,%rax <-- trapping instruction
2d: 48 c1 e8 03 shr $0x3,%rax
31: 42 80 3c 28 00 cmpb $0x0,(%rax,%r13,1)
36: 74 11 je 0x49
38: 4c 89 f7 mov %r14,%rdi
3b: e8 23 17 74 00 call 0x741763