On Tue, 02 Feb 2016 22:25:45 +0100, Dmitry Vyukov wrote: > > On Mon, Feb 1, 2016 at 11:36 AM, Takashi Iwai <tiwai@xxxxxxx> wrote: > > On Mon, 01 Feb 2016 11:15:08 +0100, > > Dmitry Vyukov wrote: > >> > >> Hello, > >> > >> The following program triggers WARNING in snd_rawmidi_kernel_write1: > >> > >> // autogenerated by syzkaller (http://github.com/google/syzkaller) > >> #include <unistd.h> > >> #include <sys/types.h> > >> #include <sys/stat.h> > >> #include <sys/uio.h> > >> #include <fcntl.h> > >> > >> int main() > >> { > >> int fd; > >> struct iovec iov; > >> > >> fd = open("/dev/snd/midiC3D0", O_RDWR); > > > > What is the 3rd device? Please show /proc/asound/cards content. > > Missed this question. Here is it. I run qemu with "-soundhw all" flag. > > 0 [Dummy ]: Dummy - Dummy > Dummy 1 > 1 [Loopback ]: Loopback - Loopback > Loopback 1 > 2 [VirMIDI ]: VirMIDI - VirMIDI > Virtual MIDI Card 1 > 3 [port ]: MTPAV - MTPAV on parallel port > MTPAV on parallel port at 0x378 > 4 [pcsp ]: PC-Speaker - pcsp > Internal PC-Speaker at port 0x61 > 5 [Intel ]: HDA-Intel - HDA Intel > HDA Intel at 0xfebf0000 irq 24 > > But the patch helps with the warning message :) Ah, you enabled MTPAV driver. Please drop CONFIG_SND_MTPAV for your testing. This is known to be unstable and is only for a dedicated parport device, not meant as a generic device to be covered at all. Takashi _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
