Zachary Amsden wrote: > Andrew Morton wrote: >> vmm:/home/akpm# echo 1 > /proc/sys/vm/vdso_enabled vmm:/home/akpm# >> vmm:/home/akpm> ls -l >> zsh: segmentation fault ls -l >> >> >>> That could tell us whether it's an init bug or a glibc bug. >>> >> >> It tells us neither. This could be a new kernel bug which only >> certain old >> userspace setups are known to trigger. Until we know exactly why >> this is >> occurring, we don't know where the bug is. >> >> And once we've worked that thing out, and if we determine that the >> bug is >> in userspace then we might be able to craft the patch in such a fashion >> that the old userspace continues to work, which would be a win. >> > > Please try my patch - sent earlier, but attached again. It will tell > you with 100% confidence if the problem is with userspace expecting > the vsyscall page to be at a particular address. I should rephrase. 100% confidence - engineer stupidity factor is more appropriate. I can't guarantee an absolute. But it is my belief that the only kernel space mapping that could ever have been relied on by userspace on i386 is the vsyscall page. Zach
