On Thu, 5 Jul 2007 10:04:25 +0530, "Sadarul Firos" <sadarul.firos@xxxxxxxxxxxxx> wrote: > I'm performing continuous reboot test on a MIPS based board running > linux-2.6.18/glibc-2.3.5/gcc-3.3.6. After several hours of rebooting > (say after 80, purely random) I've observed Segmentation fault or > Illegal instruction error while starting the udevd and ntpd programs > during the startup. The error appears pretty much random, it doesn't > usually take more than an hour or two to catch an instance of the > Segfault. ... > 11. Changed the order of invocation of the programs udevd and ntpd. > Previously, in the init scripts, udevd was started first and ntpd was > called somewhere near the last stage of init scripts. Now ntpd is > started immediately after invoking udevd. Surprisingly, the frequency of > appearing segfault was increased, ie previously it would take nearly 100 > reboots to observe a segfault, but now it would take nearly 10 reboots > to observe a segfault! I think all these implies some cache related issue (or hardware issue). I have seen such a strange errors (reserved instruction exception, etc.) with a bit unstable power-supply. Does your kernel based on vanilla 2.6.18? It lacks some fixes related D-cache aliasing. It might be worth to try latest 2.6.18-stable or master branch in linux-mips.org git tree. --- Atsushi Nemoto
