Messages in this thread | | | Subject | Re: usb/media/lmedm04: GPF in lme2510_int_read/usb_pipe_endpoint | From | Malcolm Priestley <> | Date | Mon, 25 Sep 2017 14:30:54 +0100 |
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On 25/09/17 13:39, Andrey Konovalov wrote: > Hi! > > I've got the following report while fuzzing the kernel with syzkaller. > > On commit e19b205be43d11bff638cad4487008c48d21c103 (4.14-rc2). > > usb 1-1: new full-speed USB device number 2 using dummy_hcd > gadgetfs: connected > gadgetfs: disconnected > gadgetfs: connected > usb 1-1: config 63 interface 0 altsetting 32 endpoint 0x7 has invalid > maxpacket 476, setting to 64 > usb 1-1: config 63 interface 0 altsetting 32 has an invalid endpoint > with address 0x0, skipping > usb 1-1: config 63 interface 0 altsetting 32 has an invalid endpoint > with address 0xE7, skipping > usb 1-1: config 63 interface 0 altsetting 32 has an invalid endpoint > with address 0x7F, skipping > usb 1-1: config 63 interface 0 has no altsetting 0 > usb 1-1: New USB device found, idVendor=3344, idProduct=22f0 > usb 1-1: New USB device strings: Mfr=255, Product=0, SerialNumber=8 > usb 1-1: Manufacturer: a > usb 1-1: SerialNumber: a > gadgetfs: configuration #63 > gadgetfs: configuration #63 > usb 1-1: selecting invalid altsetting 1 > LME2510(C): Firmware Status: 4 (61) > usb 1-1: dvb_usb_v2: found a 'DM04_LME2510C_DVB-S RS2000' in warm state > usb 1-1: dvb_usb_v2: will use the device's hardware PID filter (table count: 15) > dvbdev: DVB: registering new adapter (DM04_LME2510C_DVB-S RS2000) > usb 1-1: media controller created > dvbdev: dvb_create_media_entity: media entity 'dvb-demux' registered. > LME2510(C): FE Found M88RS2000 > ts2020: probe of 0-0060 failed with error -11 > usb 1-1: DVB: registering adapter 0 frontend 0 (DM04_LME2510C_DVB-S > RS2000 RS2000)... > dvbdev: dvb_create_media_entity: media entity 'DM04_LME2510C_DVB-S > RS2000 RS2000' registered. > LME2510(C): TUN Found RS2000 tuner > kasan: CONFIG_KASAN_INLINE enabled > kasan: GPF could be caused by NULL-ptr deref or user memory access > general protection fault: 0000 [#1] PREEMPT SMP KASAN
Neither it it null or user memory and it is always present regardless of tuner state when _real_ hardware is connected.
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