Hi Andy,
On Fri, Feb 17, 2017 at 10:12:36PM -0800, Andy Lutomirski wrote:
On Fri, Feb 17, 2017 at 9:42 PM, Fengguang Wu <fengguang...@intel.com> wrote:
Greetings,
FYI here is an old bug, however is still active in mainline kernel.
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
[ 3.185986] init[1] vsyscall attempted with vsyscall=none
ip:ffffffffff600400 cs:33 sp:7ffe878ff8b8 ax:ffffffffff600400 si:7f2c3de62a4c
di:7ffe878ff978
I don't know what's up with the bisection, but I think this is a
configuration problem in your test setup. You've configured with:
CONFIG_LEGACY_VSYSCALL_NONE=y
which is not valid when you're running binaries that are compiled with
as old a glibc as you're using. *Dynamic* glibc binaries have been
fine for a long time, but static glibc binaried (e.g. your init, I
presume) need a glibc that's only a couple years old.
You could fix it by either disallowing that particular configuration
or by updating your distro.
OK, I'll disable that configuration since I'm running various
tiny/large modern/legacy OS images (yocto, openwrt, ubuntu, debian,
RHEL) for doing kernel tests.
Regards,
Fengguang
