On Wed, May 18, 2022 at 01:43:16PM -0700, Suren Baghdasaryan 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: > > $ mrelease_test > Success reaping a child with 1MB of memory allocations > > On failure the test reports the failure. Sample outputs: > > $ mrelease_test > All process_mrelease attempts failed! > > $ mrelease_test > process_mrelease: Invalid argument > > Signed-off-by: Suren Baghdasaryan <surenb@xxxxxxxxxx> > --- Thanks your adding selftests, Suren! Acked-by: Christian Brauner (Microsoft) <brauner@xxxxxxxxxx>
