Hello, syzbot tried to test the proposed patch but build/boot failed: drivers/usb/typec/altmodes/built-in.a CC drivers/usb/misc/legousbtower.o AR drivers/usb/musb/built-in.a CC drivers/usb/host/sl811-hcd.o CC drivers/usb/usbip/vhci_sysfs.o AR drivers/usb/typec/mux/built-in.a CC drivers/usb/serial/generic.o CC drivers/usb/serial/bus.o CC drivers/usb/usbip/vhci_tx.o CC drivers/usb/serial/aircable.o CC drivers/usb/typec/tcpm/tcpm.o CC drivers/staging/rtl8712/usb_halinit.o CC drivers/net/wireless/realtek/rtlwifi/rtl8192ee/dm.o AR drivers/media/usb/zr364xx/built-in.a CC drivers/staging/uwb/driver.o CC drivers/staging/rtl8712/usb_ops.o CC drivers/staging/rtl8712/usb_ops_linux.o CC drivers/staging/rtl8712/rtl871x_io.o CC drivers/staging/rtl8712/rtl8712_io.o CC drivers/media/usb/uvc/uvc_debugfs.o CC drivers/net/wireless/realtek/rtlwifi/rtl8192ce/rf.o CC drivers/net/wireless/realtek/rtlwifi/rtl8192ee/fw.o CC drivers/net/wireless/realtek/rtlwifi/rtl8192ce/phy.o CC drivers/media/usb/uvc/uvc_metadata.o CC drivers/usb/serial/ark3116.o CC drivers/net/wireless/realtek/rtlwifi/rtl8192ce/sw.o CC drivers/usb/serial/belkin_sa.o CC drivers/media/usb/uvc/uvc_entity.o CC drivers/net/wireless/realtek/rtlwifi/rtl8192ee/hw.o CC drivers/gpu/drm/i915/i915_oa_sklgt4.o CC drivers/gpu/drm/i915/i915_oa_bxt.o CC drivers/usb/misc/rio500.o CC drivers/usb/misc/usbtest.o CC drivers/staging/wlan-ng/prism2usb.o CC drivers/usb/misc/ehset.o CC drivers/usb/serial/ch341.o CC drivers/usb/storage/protocol.o CC drivers/usb/typec/ucsi/trace.o AR drivers/net/wireless/realtek/rtlwifi/rtl8192cu/built-in.a CC drivers/usb/usbip/vhci_rx.o CC drivers/usb/usbip/vhci_hcd.o CC drivers/usb/misc/trancevibrator.o CC drivers/usb/typec/ucsi/ucsi.o CC drivers/net/wireless/realtek/rtlwifi/rtl8192de/fw.o CC drivers/staging/uwb/drp.o CC drivers/usb/host/sl811_cs.o CC drivers/staging/uwb/drp-avail.o CC drivers/usb/host/u132-hcd.o CC drivers/staging/rtl8712/rtl871x_ioctl_linux.o CC drivers/net/wireless/realtek/rtlwifi/rtl8192ce/table.o AR drivers/media/usb/uvc/built-in.a scripts/Makefile.build:497: recipe for target 'drivers/media/usb' failed make[2]: *** [drivers/media/usb] Error 2 scripts/Makefile.build:497: recipe for target 'drivers/media' failed make[1]: *** [drivers/media] Error 2 make[1]: *** Waiting for unfinished jobs.... CC drivers/usb/misc/uss720.o CC drivers/usb/storage/transport.o CC drivers/usb/misc/usbsevseg.o CC drivers/usb/usbip/stub_dev.o CC drivers/usb/misc/usb251xb.o CC drivers/staging/uwb/drp-ie.o CC drivers/usb/serial/cp210x.o CC drivers/usb/serial/cyberjack.o CC drivers/usb/serial/cypress_m8.o CC drivers/gpu/drm/i915/i915_oa_kblgt2.o CC drivers/usb/host/bcma-hcd.o CC drivers/usb/host/r8a66597-hcd.o CC drivers/usb/misc/yurex.o CC drivers/usb/misc/usb3503.o CC drivers/net/wireless/realtek/rtlwifi/rtl8192ee/led.o CC drivers/staging/wlan-ng/p80211conv.o CC drivers/usb/host/ssb-hcd.o CC drivers/net/wireless/realtek/rtlwifi/rtl8192ee/phy.o CC drivers/net/wireless/realtek/rtlwifi/rtl8192ce/trx.o CC drivers/staging/uwb/est.o CC drivers/usb/misc/usb4604.o CC drivers/usb/misc/chaoskey.o CC drivers/net/wireless/realtek/rtlwifi/rtl8192se/dm.o CC drivers/net/wireless/realtek/rtlwifi/rtl8192se/fw.o CC drivers/staging/rtl8712/rtl871x_ioctl_rtl.o CC drivers/usb/usbip/stub_main.o CC drivers/usb/misc/lvstest.o CC drivers/usb/storage/usb.o CC drivers/usb/storage/initializers.o CC drivers/usb/storage/sierra_ms.o CC drivers/gpu/drm/drm_vblank.o CC drivers/gpu/drm/drm_syncobj.o CC drivers/usb/typec/ucsi/ucsi_acpi.o CC drivers/net/wireless/realtek/rtlwifi/rtl8192de/hw.o CC drivers/usb/host/fotg210-hcd.o CC drivers/staging/uwb/ie.o CC drivers/gpu/drm/i915/i915_oa_kblgt3.o CC drivers/staging/wlan-ng/p80211req.o CC drivers/net/wireless/realtek/rtlwifi/rtl8192ee/pwrseq.o CC drivers/staging/wlan-ng/p80211wep.o CC drivers/staging/wlan-ng/p80211netdev.o CC drivers/usb/serial/usb_debug.o CC drivers/staging/rtl8712/rtl871x_ioctl_set.o CC drivers/net/wireless/realtek/rtlwifi/rtl8192de/led.o CC drivers/net/wireless/realtek/rtlwifi/rtl8192se/hw.o CC drivers/usb/usbip/stub_rx.o CC drivers/net/wireless/realtek/rtlwifi/rtl8192se/led.o CC drivers/usb/usbip/stub_tx.o CC drivers/staging/uwb/ie-rcv.o CC drivers/usb/typec/class.o CC drivers/usb/serial/digi_acceleport.o AR drivers/usb/typec/ucsi/built-in.a AR drivers/usb/misc/built-in.a CC drivers/gpu/drm/i915/i915_oa_glk.o CC drivers/staging/uwb/lc-dev.o CC drivers/net/wireless/realtek/rtlwifi/rtl8192se/phy.o CC drivers/net/wireless/realtek/rtlwifi/rtl8192se/rf.o CC drivers/usb/usbip/vudc_dev.o AR drivers/net/wireless/realtek/rtlwifi/rtl8192ce/built-in.a CC drivers/usb/typec/tcpm/fusb302.o CC drivers/usb/storage/option_ms.o CC drivers/usb/storage/usual-tables.o CC drivers/net/wireless/realtek/rtlwifi/rtl8192de/phy.o CC drivers/staging/rtl8712/rtl8712_led.o CC drivers/usb/typec/mux.o CC drivers/usb/typec/bus.o CC drivers/usb/typec/tcpm/tcpci.o CC drivers/gpu/drm/i915/i915_oa_cflgt2.o CC drivers/gpu/drm/i915/i915_oa_cflgt3.o CC drivers/net/wireless/realtek/rtlwifi/rtl8192ee/rf.o CC drivers/staging/uwb/lc-rc.o CC drivers/net/wireless/realtek/rtlwifi/rtl8192de/rf.o CC drivers/usb/host/max3421-hcd.o CC drivers/usb/usbip/vudc_sysfs.o CC drivers/usb/serial/io_edgeport.o CC drivers/usb/serial/io_ti.o CC drivers/net/wireless/realtek/rtlwifi/rtl8192de/sw.o CC drivers/usb/typec/tps6598x.o CC drivers/usb/storage/alauda.o CC drivers/usb/storage/cypress_atacb.o CC drivers/usb/storage/datafab.o CC drivers/gpu/drm/i915/i915_oa_cnl.o CC drivers/usb/usbip/vudc_tx.o CC drivers/net/wireless/realtek/rtlwifi/rtl8192ee/sw.o CC drivers/staging/rtl8712/rtl871x_mlme.o CC drivers/staging/rtl8712/ieee80211.o CC drivers/staging/uwb/neh.o CC drivers/usb/usbip/vudc_rx.o CC drivers/net/wireless/realtek/rtlwifi/rtl8192ee/table.o CC drivers/net/wireless/realtek/rtlwifi/rtl8192se/sw.o AR drivers/usb/typec/tcpm/built-in.a CC drivers/gpu/drm/drm_lease.o CC drivers/net/wireless/realtek/rtlwifi/rtl8192de/table.o CC drivers/net/wireless/realtek/rtlwifi/rtl8192ee/trx.o AR drivers/usb/typec/built-in.a CC drivers/staging/uwb/pal.o CC drivers/staging/uwb/radio.o CC drivers/net/wireless/realtek/rtlwifi/rtl8192de/trx.o CC drivers/staging/uwb/reset.o CC drivers/usb/usbip/vudc_transfer.o CC drivers/gpu/drm/drm_writeback.o CC drivers/usb/usbip/vudc_main.o AR drivers/staging/wlan-ng/built-in.a CC drivers/gpu/drm/drm_client.o CC drivers/usb/storage/ene_ub6250.o CC drivers/staging/uwb/rsv.o CC drivers/usb/serial/empeg.o CC drivers/net/wireless/realtek/rtlwifi/rtl8723ae/dm.o CC drivers/net/wireless/realtek/rtlwifi/rtl8723ae/fw.o CC drivers/net/wireless/realtek/rtlwifi/rtl8192se/table.o CC drivers/usb/serial/f81232.o CC drivers/net/wireless/realtek/rtlwifi/rtl8723be/dm.o CC drivers/net/wireless/realtek/rtlwifi/rtl8723be/fw.o CC drivers/staging/uwb/scan.o CC drivers/net/wireless/realtek/rtlwifi/rtl8192se/trx.o CC drivers/staging/rtl8712/rtl871x_mp_ioctl.o CC drivers/staging/uwb/uwb-debug.o CC drivers/usb/storage/freecom.o CC drivers/gpu/drm/i915/i915_oa_icl.o CC drivers/usb/serial/f81534.o CC drivers/net/wireless/realtek/rtlwifi/rtl8723be/hw.o CC drivers/net/wireless/realtek/rtlwifi/base.o CC drivers/net/wireless/realtek/rtlwifi/cam.o CC drivers/gpu/drm/drm_client_modeset.o CC drivers/gpu/drm/drm_hdcp.o AR drivers/net/wireless/realtek/rtlwifi/rtl8192ee/built-in.a CC drivers/gpu/drm/drm_ioc32.o CC drivers/net/wireless/realtek/rtlwifi/rtl8821ae/dm.o AR drivers/usb/usbip/built-in.a CC drivers/net/wireless/realtek/rtlwifi/rtl8821ae/fw.o CC drivers/net/wireless/realtek/rtlwifi/rtl8821ae/hw.o CC drivers/net/wireless/realtek/rtlwifi/rtl8723com/main.o CC drivers/net/wireless/realtek/rtlwifi/rtl8821ae/led.o CC drivers/gpu/drm/drm_atomic_uapi.o CC drivers/usb/serial/ftdi_sio.o CC drivers/staging/rtl8712/rtl871x_mp.o CC drivers/staging/wusbcore/host/whci/asl.o CC drivers/gpu/drm/drm_panel.o CC drivers/gpu/drm/drm_of.o AR drivers/usb/host/built-in.a CC drivers/net/wireless/realtek/rtlwifi/rtl8723com/dm_common.o CC drivers/usb/serial/garmin_gps.o CC drivers/net/wireless/realtek/rtlwifi/rtl8723com/fw_common.o CC drivers/staging/uwb/uwbd.o CC drivers/net/wireless/realtek/rtlwifi/rtl8723com/phy_common.o CC drivers/usb/storage/isd200.o CC drivers/net/wireless/realtek/rtlwifi/core.o AR drivers/gpu/drm/i915/built-in.a CC drivers/usb/serial/ipaq.o CC drivers/staging/rtl8712/mlme_linux.o CC drivers/net/wireless/realtek/rtlwifi/debug.o CC drivers/net/wireless/realtek/rtlwifi/efuse.o CC drivers/staging/uwb/umc-bus.o CC drivers/staging/uwb/umc-dev.o CC drivers/staging/uwb/umc-drv.o CC drivers/staging/wusbcore/host/whci/debug.o CC drivers/staging/wusbcore/crypto.o CC drivers/gpu/drm/drm_agpsupport.o AR drivers/net/wireless/realtek/rtlwifi/rtl8192se/built-in.a CC drivers/net/wireless/realtek/rtlwifi/rtl8723ae/hal_btc.o CC drivers/net/wireless/realtek/rtlwifi/rtl8723ae/hal_bt_coexist.o CC drivers/net/wireless/realtek/rtlwifi/rtl8723ae/hw.o CC drivers/staging/rtl8712/recv_linux.o CC drivers/staging/wusbcore/devconnect.o CC drivers/staging/wusbcore/dev-sysfs.o CC drivers/staging/uwb/whci.o CC drivers/staging/wusbcore/mmc.o CC drivers/staging/wusbcore/pal.o CC drivers/staging/wusbcore/host/whci/hcd.o CC drivers/net/wireless/realtek/rtlwifi/rtl8723be/led.o CC drivers/net/wireless/realtek/rtlwifi/rtl8723be/phy.o CC drivers/net/wireless/realtek/rtlwifi/rtl8723be/pwrseq.o CC drivers/staging/rtl8712/xmit_linux.o CC drivers/staging/rtl8712/usb_intf.o CC drivers/gpu/drm/drm_debugfs.o CC drivers/usb/storage/jumpshot.o CC drivers/staging/uwb/whc-rc.o CC drivers/gpu/drm/drm_debugfs_crc.o CC drivers/usb/storage/karma.o CC drivers/usb/serial/ipw.o CC drivers/usb/storage/onetouch.o CC drivers/usb/serial/ir-usb.o CC drivers/gpu/drm/drm_mipi_dsi.o CC drivers/net/wireless/realtek/rtlwifi/ps.o AR drivers/net/wireless/realtek/rtlwifi/rtl8192de/built-in.a CC drivers/staging/wusbcore/host/hwa-hc.o CC drivers/staging/uwb/hwa-rc.o CC drivers/staging/wusbcore/rh.o AR drivers/net/wireless/realtek/rtlwifi/rtl8723com/built-in.a CC drivers/staging/wusbcore/reservation.o CC drivers/staging/rtl8712/os_intfs.o CC drivers/net/wireless/realtek/rtlwifi/rtl8723ae/led.o CC drivers/staging/wusbcore/host/whci/hw.o CC drivers/usb/storage/realtek_cr.o CC drivers/staging/wusbcore/host/whci/init.o CC drivers/staging/wusbcore/host/whci/int.o CC drivers/staging/rtl8712/rtl871x_pwrctrl.o CC drivers/usb/storage/sddr09.o CC drivers/usb/serial/iuu_phoenix.o CC drivers/net/wireless/realtek/rtlwifi/rtl8723be/sw.o CC drivers/staging/rtl8712/rtl8712_recv.o CC drivers/usb/storage/sddr55.o CC drivers/net/wireless/realtek/rtlwifi/rtl8723be/rf.o CC drivers/gpu/drm/drm_panel_orientation_quirks.o CC drivers/usb/storage/shuttle_usbat.o CC drivers/staging/wusbcore/security.o CC drivers/net/wireless/realtek/rtlwifi/rtl8723ae/phy.o CC drivers/net/wireless/realtek/rtlwifi/rtl8723ae/pwrseq.o CC drivers/net/wireless/realtek/rtlwifi/rtl8723ae/rf.o CC drivers/net/wireless/realtek/rtlwifi/rtl8723ae/sw.o CC drivers/staging/wusbcore/wusbhc.o CC drivers/staging/rtl8712/rtl871x_recv.o CC drivers/staging/rtl8712/rtl871x_sta_mgt.o CC drivers/staging/rtl8712/rtl871x_xmit.o CC drivers/staging/rtl8712/rtl8712_xmit.o CC drivers/net/wireless/realtek/rtlwifi/rtl8723be/table.o CC drivers/net/wireless/realtek/rtlwifi/rtl8723be/trx.o CC drivers/usb/serial/keyspan.o CC drivers/usb/serial/keyspan_pda.o AR drivers/staging/uwb/built-in.a AR drivers/gpu/drm/built-in.a CC drivers/staging/wusbcore/wa-hc.o CC drivers/net/wireless/realtek/rtlwifi/rtl8821ae/phy.o CC drivers/net/wireless/realtek/rtlwifi/rtl8821ae/pwrseq.o CC drivers/net/wireless/realtek/rtlwifi/rtl8821ae/rf.o CC drivers/staging/wusbcore/host/whci/qset.o CC drivers/staging/wusbcore/host/whci/pzl.o AR drivers/gpu/built-in.a CC drivers/staging/wusbcore/host/whci/wusb.o CC drivers/net/wireless/realtek/rtlwifi/rtl8723ae/trx.o CC drivers/net/wireless/realtek/rtlwifi/rc.o CC drivers/net/wireless/realtek/rtlwifi/regd.o CC drivers/net/wireless/realtek/rtlwifi/rtl8821ae/sw.o CC drivers/net/wireless/realtek/rtlwifi/rtl8723ae/table.o CC drivers/net/wireless/realtek/rtlwifi/stats.o CC drivers/net/wireless/realtek/rtlwifi/pci.o CC drivers/staging/wusbcore/wa-rpipe.o CC drivers/staging/wusbcore/wa-nep.o AR drivers/usb/storage/built-in.a CC drivers/net/wireless/realtek/rtlwifi/usb.o CC drivers/net/wireless/realtek/rtlwifi/rtl8821ae/table.o CC drivers/net/wireless/realtek/rtlwifi/rtl8821ae/trx.o CC drivers/staging/wusbcore/wa-xfer.o CC drivers/staging/wusbcore/cbaf.o CC drivers/usb/serial/kobil_sct.o CC drivers/usb/serial/kl5kusb105.o CC drivers/usb/serial/metro-usb.o CC drivers/usb/serial/mct_u232.o CC drivers/usb/serial/mos7720.o CC drivers/usb/serial/mos7840.o CC drivers/usb/serial/mxuport.o CC drivers/usb/serial/navman.o CC drivers/usb/serial/omninet.o CC drivers/usb/serial/opticon.o CC drivers/usb/serial/option.o CC drivers/usb/serial/oti6858.o CC drivers/usb/serial/pl2303.o CC drivers/usb/serial/qcaux.o CC drivers/usb/serial/qcserial.o CC drivers/usb/serial/quatech2.o CC drivers/usb/serial/safe_serial.o AR drivers/staging/rtl8712/built-in.a CC drivers/usb/serial/sierra.o AR drivers/net/wireless/realtek/rtlwifi/rtl8723be/built-in.a CC drivers/usb/serial/usb-serial-simple.o CC drivers/usb/serial/spcp8x5.o AR drivers/staging/wusbcore/host/whci/built-in.a AR drivers/staging/wusbcore/host/built-in.a CC drivers/usb/serial/ssu100.o CC drivers/usb/serial/symbolserial.o CC drivers/usb/serial/usb_wwan.o CC drivers/usb/serial/ti_usb_3410_5052.o CC drivers/usb/serial/upd78f0730.o CC drivers/usb/serial/visor.o AR drivers/net/wireless/realtek/rtlwifi/rtl8723ae/built-in.a CC drivers/usb/serial/wishbone-serial.o CC drivers/usb/serial/xsens_mt.o CC drivers/usb/serial/whiteheat.o AR drivers/staging/wusbcore/built-in.a AR drivers/staging/built-in.a AR drivers/usb/serial/built-in.a AR drivers/usb/built-in.a AR drivers/net/wireless/realtek/rtlwifi/rtl8821ae/built-in.a AR drivers/net/wireless/realtek/rtlwifi/built-in.a AR drivers/net/wireless/realtek/built-in.a AR drivers/net/wireless/built-in.a AR drivers/net/built-in.a Makefile:1083: recipe for target 'drivers' failed make: *** [drivers] Error 2 Error text is too large and was truncated, full error text is at: https://syzkaller.appspot.com/x/error.txt?x=176045b5600000 Tested on: commit: f0df5c1b usb-fuzzer: main usb gadget fuzzer driver git tree: https://github.com/google/kasan.git dashboard link: https://syzkaller.appspot.com/bug?extid=7fa38a608b1075dfd634 compiler: gcc (GCC) 9.0.0 20181231 (experimental) patch: https://syzkaller.appspot.com/x/patch.diff?x=12f8611d600000