[Libguestfs] [PATCH nbdkit] tests: Skip vsock tests unless the vsock_loopback module is loaded

It's unfortunate that vsock in Linux can be broken if some but not all vsock modules needed are loaded. As we are testing loopback (VMADDR_CID_LOCAL), require that vsock_loopback is loaded. Linux is able to autoload the correct module(s) if vsock.ko is _not_ loaded. We could in theory enhance the test to check this, but that leaves us with uncertainty about whether the test could work (eg. Is vsock available as a module in this kernel? Is this even Linux?) Reported-by: Ming Xie Thanks: Stefano Garzarella Fixes: https://bugzilla.redhat.com/show_bug.cgi?id=2069558 --- tests/functions.sh.in | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/tests/functions.sh.in b/tests/functions.sh.in index 6d41f683..7877c84d 100644 --- a/tests/functions.sh.in +++ b/tests/functions.sh.in @@ -240,11 +240,13 @@ requires_non_root () } # Tests that use the vsock interface will fail if vsock is not -# supported. On Linux you have to load the kernel modules: vsockmon -# and vsock_loopback. +# supported. On Linux you have to load the kernel module +# vsock_loopback. See also +# https://bugzilla.redhat.com/show_bug.cgi?id=2069558 requires_vsock_support () { - if ! grep -q ^AF_VSOCK /proc/net/protocols; then + if ! grep -q ^AF_VSOCK /proc/net/protocols || + ! lsmod | grep ^vsock_loopback; then echo "$0: test skipped because AF_VSOCK is not supported." exit 77 fi -- 2.35.1