> Thanks for your random guess. > The following workaround seems to fix the crashes on powerpc. > However, this patch is clearly not what we want for other architectures, > as they might need -fno-omit-frame-pointer to function properly.
Well, and -pg requires it, even on powerpc, so that won't work for ftrace. Any chance you can try the workaround that segher proposed though ? http://penguinppc.de/~segher/0001-powerpc-Workaround-for-the-ftrace-problem.patch His workaround only kicks in with CONFIG_FTRACE, that would have to be fixed of course. Also, I suspect the bits that have -pg in a flag "remove" section should have also "fno-omit-frame-pointer" in that remove section too. > I reproduced the random crashes of kernel and userspace applications > (without the following patch) on a vanilla 2.6.26 and 2.6.27-rc{1-4} > kernel. I did _not_ try a 2.6.25 kernel with -fno-omit-frame-pointer, so > I don't know if it would also crash then. > > I'm currently running more tests on a patched 2.6.27-rc4 kernel, but it > didn't crash, yet. I already did 5 complete kernel tree compilations. It > should have crashed by now, but it didn't :) Thanks ! Ben. _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev
