David Marchand [off-list ref] writes:

On Wed, Mar 17, 2021 at 3:44 PM Aaron Conole [off-list ref] wrote:

quoted

diff --git a/app/test/has-hugepage.sh b/app/test/has-hugepage.sh
index d600fad319..1c3cfb665a 100755
--- a/app/test/has-hugepage.sh
+++ b/app/test/has-hugepage.sh

@@ -3,7 +3,17 @@
 # Copyright 2020 Mellanox Technologies, Ltd

 if [ "$(uname)" = "Linux" ] ; then
-       cat /proc/sys/vm/nr_hugepages || echo 0
+       nr_hugepages=$(cat /proc/sys/vm/nr_hugepages)
+       # Need to check if we have permissions to access hugepages
+       perm=""
+       for mount in `mount | grep hugetlbfs | awk '{ print $3; }'`; do
+               test ! -w $mount/. || perm="$mount"
+       done
+       if [ "$perm" = "" -o "$nr_hugepages" = "0" ]; then
+               echo 0
+       else
+               echo $nr_hugepages
+       fi
 elif [ "$(uname)" = "FreeBSD" ] ; then
        echo 1 # assume FreeBSD always has hugepages
 else

The check is evaluated first when configuring as normal user and not
reevaluated when running the tests as root in Travis/GHA, so the tests
are started with no hugepage.

Then, in Travis and GHA, we can see (sigbus o_O) crashes in no-huge mode.
I tried to reproduce but did not manage.

I noticed that as well.  I am equally as confused, but I'm working on
it (along with folding in Thomas' suggestions).