On Sat, Oct 25, 2003 at 09:44:35AM -0700, Teresa Tao wrote: > Hi there, > > I am working on an real time video playback applicaion on a mips cpu. But after my video application play a while like 5 to 10 minutes, a bus error happened. > > We add some debug meesage in the kernel, so we know that after the do_ade function inside the unalign.c, the bus error happens for the opcode lw or sw. So my guess is that I have an unaligned memory pointer(not in 4 byte boundary). > But my puzzle is that if I have an unaligned memory pointer, it should happen at the first loop I playback, how come it happens after it plays several loops? > There are many reasons for having bus error, cache, errant pointers, unstable hardware, or some tricky kernel bugs which happens when certain conditions happen together. > Is there a possibility that my application's stack being trashed after a while? but I don't have recursive calls inside my application. Everything is possible. :) Jun
