Andy Whitcroft wrote: > > I think that my debugging says that newsetup got the compressed kernel > and decompressor into memory ok and execution passed to it normally. > But I cannot figure out where the corruption is coming from. I tried > annotating the gzip decompressor to see if the input and output buffers > were overlapping at any time and that debug said no (unsure how reliable > that is). And yet at some point the output image is munched up. > > One last piece of information. The decompressor also always seems to > get to the end of the input stream in exactly the right place without > reporting any kind of error, that is with exactly 8 bytes left over for > the length and crc checks. Which given the context sensitive nature of > the algorithm tends to imply the input stream was ok for the whole > duration of the decompress. Yet the output stream is badly broken. > > Anyone got any wacky suggestions ... >
It definitely sounds like a memory clobber of some sort. Usual suspects, in addition to the input/output buffers you already looked at, would be the heap and the stack. Finding where the stack pointer lives would be my first, instinctive guess. -hpa - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/