On Wed, 19 Sep 2007, Mikael Pettersson wrote: > H. Peter Anvin writes: > > Mikael Pettersson wrote: > > > Does /proc/PID/mem even work? If I do `strace cat /proc/PID/mem > > /dev/null' > > > for a known good PID, the first read() from /proc/PID/mem fails with > ESRCH, > > > > Of course it does. Address zero isn't typically mapped. > > Indeed. My bad :-(
No, not quite. Peter explains why "cat /proc/self/mem" gets EIO, but you were seeing "cat /proc/other/mem" get ESRCH: that's from the stringent !MAY_PTRACE || !ptrace_may_attach checks. Hugh - 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/
