I've been seeing some peculiar effects on Alpha boxes (particularly on SMPs) where threads run right past breakpoints planted by a debugger. (This on 2.2 series kernels). Looking at the code in arch/alpha/kernel/ptrace.c there appears to be nowhere where flush_icache_range is called. According to the Alpha architecture manual you must execute a "call_pal imb" (which is what flush_icache_range turns into) after changing the I-stream. So :- 1) Anyone agree with me that flush_icache_range ought to be called after any ptrace write which modifies an executable page ? (Or have I missed something which has this effect ?) 2) If so, would patches be accepted ? The same problem also appears to exist in 2.4... Thanks -- Jim James Cownie <[EMAIL PROTECTED]> Etnus, LLC. +44 117 9071438 http://www.etnus.com - 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/
