On Tue, Aug 18, 2009 at 07:00:16PM +0200, Bruno Prémont wrote: > Hi Greg, > > Were you able to reproduce this with a FTDI usbserial device? No, I can't find one in my box. I'll go dig in the attic next to try to find on, I knew I had one before... > I just had a short look with 2.6.31-rc6, it crashes harder... once > kernel did panic with general protection fault after reporting > tty_port_close_start: count=-1 > The second time id started output of an Oops but only half of the first > line ever showed up on screen (Intel KMS). > > Note: this was with just usbserial.ko and ftdi_sio.ko rebuilt with > CONFIG_DEBUG_INFO=y in the hope to find out what did access a bad > pointer. (make CONFIG_DEBUG_INFO=y drivers/usb/serial/$module.ko) > > Will retry now with a fresh compile with CONFIG_DEBUG_INFO enabled for > whole kernel and see if I can get better information, eventually > switching to vesa framebuffer in case the partial output happens again. > > This pretty much looks like unbalanced ref-count... Yeah, it sounds like it. More info would be great to have if you can get it. thanks, greg k-h -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
