On Mon, 16 May 2022 00:55:38 -0700 Suren Baghdasaryan <surenb@xxxxxxxxxx> wrote: > Introduce process_mrelease syscall sanity tests which include tests > which expect to fail: > - process_mrelease with invalid pidfd and flags inputs > - process_mrelease on a live process with no pending signals > and valid process_mrelease usage which is expected to succeed. > Because process_mrelease has to be used against a process with a pending > SIGKILL, it's possible that the process exits before process_mrelease > gets called. In such cases we retry the test with a victim that allocates > twice more memory up to 1GB. This would require the victim process to > spend more time during exit and process_mrelease has a better chance of > catching the process before it exits and succeeding. > > On success the test reports the amount of memory the child had to > allocate for reaping to succeed. Sample output: > Success reaping a child with 1MB of memory allocations > > On failure the test reports the failure. Sample outputs: > All process_mrelease attempts failed! > process_mrelease: Invalid argument > > ... > > --- a/tools/testing/selftests/vm/run_vmtests.sh > +++ b/tools/testing/selftests/vm/run_vmtests.sh > @@ -287,6 +287,22 @@ else > echo "[PASS]" > fi > > +echo "---------------------" > +echo "running mrelease_test" > +echo "---------------------" > +./mrelease_test > +ret_val=$? > + > +if [ $ret_val -eq 0 ]; then > + echo "[PASS]" > +elif [ $ret_val -eq $ksft_skip ]; then > + echo "[SKIP]" > + exitcode=$ksft_skip > +else > + echo "[FAIL]" > + exitcode=1 > +fi > + > echo "-------------------" > echo "running mremap_test" > echo "-------------------" Can you please redo this against git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm branch mm-stable or mm-unstable. Or against linux-next? This script now has a helper function run_test which I think can be used here.
