Hello, syzbot tried to test the proposed patch but build/boot failed: 828/au0828-video.o AR drivers/media/usb/msi2500/built-in.a CC drivers/media/dvb-frontends/isl6423.o CC drivers/media/rc/keymaps/rc-nec-terratec-cinergy-xs.o CC drivers/media/usb/gspca/mars.o CC drivers/hid/hid-lg4ff.o CC drivers/gpu/drm/drm_vblank.o CC drivers/gpu/drm/drm_syncobj.o CC drivers/gpu/drm/drm_lease.o AR drivers/staging/rtl8712/built-in.a CC drivers/media/usb/dvb-usb/dw2102.o AR drivers/staging/built-in.a CC drivers/media/dvb-frontends/ec100.o CC drivers/media/dvb-frontends/ds3000.o CC drivers/media/rc/keymaps/rc-norwood.o CC drivers/media/dvb-frontends/ts2020.o CC drivers/media/usb/gspca/mr97310a.o CC drivers/media/usb/dvb-usb/dtv5100.o CC drivers/gpu/drm/drm_writeback.o CC drivers/hid/hid-lg-g15.o AR drivers/media/usb/cpia2/built-in.a CC drivers/media/usb/dvb-usb/cinergyT2-core.o CC drivers/media/usb/gspca/nw80x.o CC drivers/media/usb/pvrusb2/pvrusb2-i2c-core.o CC drivers/media/usb/usbvision/usbvision-core.o CC drivers/media/usb/stk1160/stk1160-core.o CC drivers/media/usb/stk1160/stk1160-v4l.o CC drivers/media/usb/dvb-usb/cinergyT2-fe.o CC drivers/media/usb/cx231xx/cx231xx-video.o CC drivers/media/usb/usbvision/usbvision-video.o CC drivers/media/usb/usbvision/usbvision-i2c.o CC drivers/media/usb/usbvision/usbvision-cards.o CC drivers/media/usb/au0828/au0828-vbi.o CC drivers/media/usb/au0828/au0828-input.o CC drivers/media/rc/keymaps/rc-npgtech.o CC drivers/media/usb/stk1160/stk1160-video.o CC drivers/media/usb/tm6000/tm6000-cards.o CC drivers/media/usb/tm6000/tm6000-core.o CC drivers/media/usb/tm6000/tm6000-i2c.o CC drivers/media/usb/tm6000/tm6000-video.o CC drivers/media/rc/keymaps/rc-odroid.o CC drivers/media/usb/pvrusb2/pvrusb2-audio.o CC drivers/media/usb/gspca/ov519.o CC drivers/hid/hid-logitech-dj.o CC drivers/media/usb/pvrusb2/pvrusb2-encoder.o AR drivers/media/usb/hdpvr/built-in.a CC drivers/media/usb/gspca/ov534.o CC drivers/hid/hid-logitech-hidpp.o CC drivers/media/usb/stk1160/stk1160-i2c.o CC drivers/hid/hid-magicmouse.o CC drivers/gpu/drm/i915/display/intel_crt.o CC drivers/media/rc/keymaps/rc-pctv-sedna.o CC drivers/hid/hid-mf.o CC drivers/gpu/drm/drm_client.o CC drivers/gpu/drm/drm_client_modeset.o CC drivers/gpu/drm/drm_atomic_uapi.o CC drivers/gpu/drm/drm_hdcp.o CC drivers/media/usb/tm6000/tm6000-stds.o CC drivers/media/usb/cx231xx/cx231xx-i2c.o CC drivers/media/dvb-frontends/mb86a20s.o CC drivers/media/usb/gspca/ov534_9.o CC drivers/media/usb/cx231xx/cx231xx-cards.o CC drivers/media/rc/keymaps/rc-pinnacle-color.o CC drivers/media/usb/cx231xx/cx231xx-core.o CC drivers/gpu/drm/drm_ioc32.o CC drivers/media/usb/cx231xx/cx231xx-avcore.o CC drivers/media/usb/tm6000/tm6000-input.o CC drivers/media/usb/pvrusb2/pvrusb2-video-v4l.o CC drivers/media/usb/pvrusb2/pvrusb2-eeprom.o CC drivers/media/usb/stk1160/stk1160-ac97.o CC drivers/media/usb/dvb-usb/az6027.o CC drivers/gpu/drm/drm_gem_shmem_helper.o CC drivers/gpu/drm/drm_panel.o CC drivers/media/rc/keymaps/rc-pinnacle-grey.o CC drivers/media/usb/pvrusb2/pvrusb2-main.o CC drivers/gpu/drm/drm_agpsupport.o CC drivers/hid/hid-microsoft.o CC drivers/media/usb/em28xx/em28xx-core.o CC drivers/media/usb/em28xx/em28xx-i2c.o AR drivers/media/usb/au0828/built-in.a CC drivers/media/usb/tm6000/tm6000-alsa.o CC drivers/media/usb/tm6000/tm6000-dvb.o CC drivers/gpu/drm/drm_pci.o CC drivers/media/usb/dvb-usb/technisat-usb2.o CC drivers/media/usb/em28xx/em28xx-cards.o CC drivers/media/usb/cx231xx/cx231xx-417.o CC drivers/media/rc/keymaps/rc-pinnacle-pctv-hd.o AR drivers/media/usb/stk1160/built-in.a CC drivers/gpu/drm/drm_debugfs.o CC drivers/media/usb/gspca/pac207.o CC drivers/gpu/drm/i915/display/intel_ddi.o CC drivers/media/usb/em28xx/em28xx-camera.o CC drivers/media/usb/pvrusb2/pvrusb2-hdw.o CC drivers/media/usb/usbtv/usbtv-core.o CC drivers/media/usb/go7007/go7007-v4l2.o CC drivers/media/dvb-frontends/ix2505v.o CC drivers/hid/hid-monterey.o CC drivers/gpu/drm/drm_debugfs_crc.o CC drivers/media/rc/keymaps/rc-pixelview.o CC drivers/media/usb/pvrusb2/pvrusb2-v4l2.o CC drivers/gpu/drm/drm_mipi_dsi.o CC drivers/gpu/drm/i915/display/intel_dp.o CC drivers/media/usb/pvrusb2/pvrusb2-ctrl.o CC drivers/media/usb/pvrusb2/pvrusb2-std.o CC drivers/media/dvb-frontends/cxd2820r_core.o AR drivers/media/usb/tm6000/built-in.a CC drivers/media/rc/keymaps/rc-pixelview-mk12.o AR drivers/media/usb/usbvision/built-in.a CC drivers/gpu/drm/drm_panel_orientation_quirks.o CC drivers/media/usb/em28xx/em28xx-video.o CC drivers/gpu/drm/i915/display/intel_dp_aux_backlight.o CC drivers/media/usb/usbtv/usbtv-video.o CC drivers/media/usb/cx231xx/cx231xx-pcb-cfg.o CC drivers/gpu/drm/i915/display/intel_dp_link_training.o CC drivers/media/usb/go7007/go7007-driver.o CC drivers/media/usb/cx231xx/cx231xx-vbi.o AR drivers/media/usb/dvb-usb/built-in.a CC drivers/media/rc/keymaps/rc-pixelview-002t.o CC drivers/gpu/drm/i915/display/intel_dp_mst.o CC drivers/hid/hid-multitouch.o CC drivers/media/usb/em28xx/em28xx-vbi.o CC drivers/media/usb/em28xx/em28xx-audio.o CC drivers/media/rc/keymaps/rc-pixelview-new.o CC drivers/hid/hid-nti.o CC drivers/media/usb/pvrusb2/pvrusb2-devattr.o CC drivers/media/usb/em28xx/em28xx-dvb.o CC drivers/hid/hid-ntrig.o CC drivers/media/usb/em28xx/em28xx-input.o CC drivers/media/usb/go7007/go7007-i2c.o CC drivers/media/rc/keymaps/rc-powercolor-real-angel.o CC drivers/media/rc/keymaps/rc-proteus-2309.o CC drivers/media/usb/go7007/go7007-fw.o CC drivers/media/rc/keymaps/rc-purpletv.o CC drivers/media/usb/pvrusb2/pvrusb2-context.o CC drivers/media/usb/pvrusb2/pvrusb2-io.o CC drivers/media/dvb-frontends/cxd2820r_c.o CC drivers/hid/hid-ortek.o CC drivers/hid/hid-prodikeys.o CC drivers/media/usb/as102/as102_drv.o CC drivers/media/usb/as102/as102_fw.o CC drivers/media/usb/as102/as10x_cmd.o CC drivers/media/rc/keymaps/rc-pv951.o CC drivers/media/rc/keymaps/rc-hauppauge.o CC drivers/media/usb/usbtv/usbtv-audio.o CC drivers/gpu/drm/i915/display/intel_dsi.o CC drivers/media/rc/keymaps/rc-rc6-mce.o CC drivers/hid/hid-pl.o CC drivers/gpu/drm/i915/display/intel_dsi_dcs_backlight.o CC drivers/media/usb/go7007/snd-go7007.o CC drivers/media/usb/cx231xx/cx231xx-input.o CC drivers/media/usb/gspca/pac7302.o CC drivers/media/usb/gspca/pac7311.o CC drivers/media/usb/cx231xx/cx231xx-dvb.o CC drivers/media/usb/cx231xx/cx231xx-audio.o CC drivers/media/usb/go7007/go7007-usb.o CC drivers/gpu/drm/i915/display/intel_dsi_vbt.o CC drivers/media/rc/keymaps/rc-real-audio-220-32-keys.o CC drivers/media/usb/pvrusb2/pvrusb2-ioread.o CC drivers/media/rc/keymaps/rc-reddo.o CC drivers/media/dvb-frontends/cxd2820r_t.o CC drivers/media/rc/keymaps/rc-snapstream-firefly.o CC drivers/media/usb/pulse8-cec/pulse8-cec.o CC drivers/media/usb/go7007/go7007-loader.o CC drivers/media/usb/rainshadow-cec/rainshadow-cec.o CC drivers/hid/hid-penmount.o CC drivers/hid/hid-petalynx.o CC drivers/gpu/drm/i915/display/intel_dvo.o CC drivers/hid/hid-picolcd_core.o CC drivers/media/usb/gspca/se401.o CC drivers/media/usb/as102/as10x_cmd_stream.o AR drivers/media/usb/usbtv/built-in.a CC drivers/media/rc/keymaps/rc-streamzap.o CC drivers/gpu/drm/i915/display/intel_gmbus.o CC drivers/gpu/drm/i915/display/intel_hdmi.o CC drivers/gpu/drm/i915/display/intel_lspcon.o CC drivers/media/usb/pvrusb2/pvrusb2-cx2584x-v4l.o CC drivers/media/rc/keymaps/rc-tango.o CC drivers/gpu/drm/i915/display/intel_lvds.o CC drivers/media/usb/pvrusb2/pvrusb2-wm8775.o CC drivers/media/usb/gspca/sn9c2028.o CC drivers/media/usb/go7007/s2250-board.o CC drivers/media/usb/as102/as102_usb_drv.o CC drivers/media/usb/as102/as10x_cmd_cfg.o CC drivers/media/usb/pvrusb2/pvrusb2-cs53l32a.o CC drivers/hid/hid-picolcd_fb.o CC drivers/media/usb/pvrusb2/pvrusb2-dvb.o CC drivers/media/usb/pvrusb2/pvrusb2-sysfs.o CC drivers/media/rc/keymaps/rc-tanix-tx3mini.o CC drivers/media/dvb-frontends/cxd2820r_t2.o AR drivers/media/usb/rainshadow-cec/built-in.a CC drivers/gpu/drm/i915/display/intel_panel.o CC drivers/media/rc/keymaps/rc-tanix-tx5max.o CC drivers/gpu/drm/i915/display/intel_sdvo.o CC drivers/media/dvb-frontends/cxd2841er.o AR drivers/media/usb/pulse8-cec/built-in.a CC drivers/media/rc/keymaps/rc-tbs-nec.o CC drivers/media/rc/keymaps/rc-technisat-ts35.o AR drivers/media/usb/em28xx/built-in.a CC drivers/media/rc/keymaps/rc-technisat-usb2.o CC drivers/gpu/drm/i915/display/intel_tv.o CC drivers/media/usb/gspca/sn9c20x.o CC drivers/media/usb/gspca/sonixb.o CC drivers/media/usb/gspca/sonixj.o CC drivers/media/rc/keymaps/rc-terratec-cinergy-c-pci.o CC drivers/media/rc/keymaps/rc-terratec-cinergy-s2-hd.o AR drivers/media/usb/cx231xx/built-in.a CC drivers/gpu/drm/i915/display/intel_vdsc.o CC drivers/hid/hid-picolcd_backlight.o CC drivers/hid/hid-picolcd_lcd.o CC drivers/hid/hid-picolcd_leds.o CC drivers/media/rc/keymaps/rc-terratec-cinergy-xs.o AR drivers/media/usb/as102/built-in.a CC drivers/media/rc/keymaps/rc-terratec-slim.o CC drivers/hid/hid-picolcd_cir.o AR drivers/media/usb/go7007/built-in.a CC drivers/media/rc/keymaps/rc-terratec-slim-2.o CC drivers/media/dvb-frontends/drxk_hard.o CC drivers/media/rc/keymaps/rc-tevii-nec.o CC drivers/media/rc/keymaps/rc-tivo.o CC drivers/hid/hid-picolcd_debugfs.o CC drivers/hid/hid-plantronics.o CC drivers/gpu/drm/i915/display/vlv_dsi.o CC drivers/media/rc/keymaps/rc-total-media-in-hand.o CC drivers/media/usb/gspca/spca500.o CC drivers/media/usb/gspca/spca501.o CC drivers/gpu/drm/i915/display/vlv_dsi_pll.o CC drivers/media/usb/gspca/spca505.o CC drivers/media/usb/gspca/spca506.o CC drivers/gpu/drm/i915/oa/i915_oa_hsw.o CC drivers/media/dvb-frontends/tda18271c2dd.o CC drivers/hid/hid-primax.o CC drivers/media/usb/gspca/spca508.o CC drivers/hid/hid-retrode.o CC drivers/gpu/drm/i915/oa/i915_oa_chv.o CC drivers/gpu/drm/i915/oa/i915_oa_bdw.o CC drivers/media/rc/keymaps/rc-total-media-in-hand-02.o CC drivers/media/rc/keymaps/rc-trekstor.o CC drivers/media/rc/keymaps/rc-tt-1500.o CC drivers/gpu/drm/i915/oa/i915_oa_sklgt2.o CC drivers/gpu/drm/i915/oa/i915_oa_sklgt3.o CC drivers/gpu/drm/i915/oa/i915_oa_sklgt4.o CC drivers/hid/hid-roccat.o CC drivers/media/usb/gspca/spca561.o CC drivers/media/rc/keymaps/rc-twinhan-dtv-cab-ci.o CC drivers/media/dvb-frontends/si2165.o CC drivers/media/usb/gspca/spca1528.o CC drivers/media/rc/keymaps/rc-twinhan1027.o CC drivers/media/dvb-frontends/a8293.o CC drivers/gpu/drm/i915/oa/i915_oa_bxt.o CC drivers/gpu/drm/i915/oa/i915_oa_kblgt2.o CC drivers/media/dvb-frontends/sp2.o CC drivers/hid/hid-roccat-common.o CC drivers/hid/hid-roccat-arvo.o CC drivers/hid/hid-roccat-isku.o CC drivers/hid/hid-roccat-kone.o CC drivers/hid/hid-roccat-koneplus.o CC drivers/hid/hid-roccat-konepure.o CC drivers/media/rc/keymaps/rc-vega-s9x.o CC drivers/media/usb/gspca/sq905.o CC drivers/media/dvb-frontends/tda10071.o CC drivers/media/dvb-frontends/rtl2830.o CC drivers/hid/hid-roccat-kovaplus.o CC drivers/hid/hid-roccat-lua.o CC drivers/hid/hid-roccat-pyra.o CC drivers/media/rc/keymaps/rc-videomate-m1f.o CC drivers/gpu/drm/i915/oa/i915_oa_kblgt3.o CC drivers/media/dvb-frontends/rtl2832.o AR drivers/media/usb/pvrusb2/built-in.a CC drivers/hid/hid-roccat-ryos.o CC drivers/gpu/drm/i915/oa/i915_oa_glk.o CC drivers/hid/hid-roccat-savu.o CC drivers/gpu/drm/i915/oa/i915_oa_cflgt2.o CC drivers/gpu/drm/i915/oa/i915_oa_cflgt3.o CC drivers/media/rc/keymaps/rc-videomate-s350.o CC drivers/gpu/drm/i915/oa/i915_oa_cnl.o CC drivers/media/rc/keymaps/rc-videomate-tv-pvr.o CC drivers/media/usb/gspca/sq905c.o CC drivers/media/usb/gspca/sq930x.o CC drivers/gpu/drm/i915/oa/i915_oa_icl.o CC drivers/gpu/drm/i915/oa/i915_oa_tgl.o CC drivers/hid/hid-rmi.o CC drivers/gpu/drm/i915/i915_perf.o CC drivers/media/usb/gspca/sunplus.o CC drivers/media/dvb-frontends/rtl2832_sdr.o CC drivers/hid/hid-saitek.o CC drivers/hid/hid-samsung.o CC drivers/media/dvb-frontends/m88rs2000.o CC drivers/media/dvb-frontends/af9033.o CC drivers/media/rc/keymaps/rc-wetek-hub.o CC drivers/media/usb/gspca/stk014.o CC drivers/media/rc/keymaps/rc-wetek-play2.o CC drivers/media/dvb-frontends/as102_fe.o CC drivers/gpu/drm/i915/i915_gpu_error.o CC drivers/media/dvb-frontends/tc90522.o CC drivers/media/dvb-frontends/gp8psk-fe.o CC drivers/media/rc/keymaps/rc-winfast.o CC drivers/hid/hid-sjoy.o CC drivers/hid/hid-sony.o CC drivers/gpu/drm/i915/i915_vgpu.o CC drivers/media/rc/keymaps/rc-winfast-usbii-deluxe.o CC drivers/hid/hid-speedlink.o CC drivers/media/rc/keymaps/rc-su3000.o CC drivers/media/dvb-frontends/zd1301_demod.o CC drivers/media/rc/keymaps/rc-xbox-dvd.o CC drivers/media/usb/gspca/stk1135.o CC drivers/hid/hid-steelseries.o CC drivers/hid/hid-sunplus.o CC drivers/media/usb/gspca/stv0680.o CC drivers/hid/hid-gaff.o CC drivers/hid/hid-tmff.o CC drivers/media/rc/keymaps/rc-x96max.o CC drivers/media/rc/keymaps/rc-zx-irdec.o CC drivers/hid/hid-tivo.o CC drivers/hid/hid-topseed.o CC drivers/media/usb/gspca/t613.o CC drivers/media/usb/gspca/topro.o CC drivers/media/usb/gspca/tv8532.o CC drivers/media/usb/gspca/touptek.o CC drivers/hid/hid-uclogic-core.o CC drivers/hid/hid-twinhan.o CC drivers/hid/hid-uclogic-rdesc.o CC drivers/media/usb/gspca/vc032x.o CC drivers/media/usb/gspca/xirlink_cit.o CC drivers/hid/hid-uclogic-params.o CC drivers/media/usb/gspca/vicam.o CC drivers/hid/hid-udraw-ps3.o CC drivers/hid/hid-led.o CC drivers/hid/hid-xinmo.o AR drivers/media/rc/keymaps/built-in.a CC drivers/hid/hid-zpff.o AR drivers/media/rc/built-in.a CC drivers/hid/hid-zydacron.o CC drivers/media/usb/gspca/zc3xx.o CC drivers/hid/wacom_wac.o CC drivers/hid/wacom_sys.o CC drivers/hid/hid-waltop.o CC drivers/hid/hid-wiimote-core.o CC drivers/hid/hid-wiimote-modules.o CC drivers/hid/hid-wiimote-debug.o CC drivers/hid/hid-sensor-hub.o CC drivers/hid/hid-sensor-custom.o AR drivers/media/dvb-frontends/built-in.a AR drivers/media/usb/gspca/built-in.a AR drivers/media/usb/built-in.a AR drivers/media/built-in.a AR drivers/gpu/drm/i915/built-in.a AR drivers/gpu/drm/built-in.a AR drivers/gpu/built-in.a AR drivers/hid/built-in.a Makefile:1683: 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=12e89493e00000 Tested on: commit: 0fa84af8 Merge tag 'usb-serial-5.7-rc1' of https://git.ker.. git tree: https://github.com/google/kasan.git usb-fuzzer dashboard link: https://syzkaller.appspot.com/bug?extid=d403396d4df67ad0bd5f compiler: gcc (GCC) 9.0.0 20181231 (experimental) patch: https://syzkaller.appspot.com/x/patch.diff?x=14aafcb7e00000