[lfs-dev] kernel messages during gcc tests
kb0iic at berzerkula.org
Wed Feb 3 06:08:19 PST 2016
On Wed, February 3, 2016 04:36, Bruce Dubbs wrote:
> I just updated several packages in LFS and did a complete LFS build
> including all Chapter 6 tests. One thing I noticed that I haven't seen
> before is a ton of error messages in /var/log/kern.log. The look like:
> Feb 2 20:52:05 lfs78 kernel: [1888937.495544] lib-42.exe: segfault
> at 8 ip 00007f63a68c1fbe sp 00007fffd02bbde0 error 4 in
> In addition to segfaults, there are some messages about 'trap invalid
> opcode' in overflow-add-4.exe.
> From the time stamps, I traced these to the gcc testuite. The test log
> does not show anything unusual. There are two unexpected failures in
> FAIL: experimental/filesystem/iterators/directory_iterator.cc
> FAIL: experimental/filesystem/iterators/recursive_directory_iterator.cc
> But I've seen those before.
> Overall the build seems to have been normal.
> A couple of things to consider is that it may be a HW issue on my system.
> It's a new Skylake i5, so gcc may be making the wrong assumptions about
> instruction set. I can check this out on an Haswell i7 to see if it
> happens there.
> Overall, these may just artifacts in the gcc test procedure, but has
> anyone else seen anything like this?
> -- Bruce
I haven't checked kernel messages during GCC testuite builds, but I have
noticed segfaults via kernel messages when testing GLIBC in the past. Did
you get any during the GLIBC tests, too?
I will usually run dmesg at the end of the build to see if anything
strange occurred throughout the build.
More information about the lfs-dev