| Message ID | 20240606135348.4708-1-rysulliv@redhat.com |
|---|---|
| State | New |
| Headers | show |
| Series | selftests/livepatch: define max test-syscall processes | expand |
On Thu, Jun 6, 2024 at 9:54 AM Ryan Sullivan <rysulliv@redhat.com> wrote: > > Define a maximum allowable number of pids that can be livepatched in > test-syscall.sh as with extremely large machines the output from a > large number of processes overflows the dev/kmsg "expect" buffer in > the "check_result" function and causes a false error. > > Reported-by: CKI Project <cki-project@redhat.com> > Signed-off-by: Ryan Sullivan <rysulliv@redhat.com> > --- > tools/testing/selftests/livepatch/test-syscall.sh | 5 ++++- > 1 file changed, 4 insertions(+), 1 deletion(-) > > diff --git a/tools/testing/selftests/livepatch/test-syscall.sh b/tools/testing/selftests/livepatch/test-syscall.sh > index b76a881d4013..289eb7d4c4b3 100755 > --- a/tools/testing/selftests/livepatch/test-syscall.sh > +++ b/tools/testing/selftests/livepatch/test-syscall.sh > @@ -15,7 +15,10 @@ setup_config > > start_test "patch getpid syscall while being heavily hammered" > > -for i in $(seq 1 $(getconf _NPROCESSORS_ONLN)); do > +NPROC=$(getconf _NPROCESSORS_ONLN) > +MAXPROC=128 > + > +for i in $(seq 1 $(($NPROC < $MAXPROC ? $NPROC : $MAXPROC))); do > ./test_klp-call_getpid & > pids[$i]="$!" > done > -- > 2.44.0 > > Acked-by: Joel Savitz <jsavitz@redhat.com>
On Thu, 6 Jun 2024, Ryan Sullivan wrote: > Define a maximum allowable number of pids that can be livepatched in > test-syscall.sh as with extremely large machines the output from a > large number of processes overflows the dev/kmsg "expect" buffer in > the "check_result" function and causes a false error. > > Reported-by: CKI Project <cki-project@redhat.com> > Signed-off-by: Ryan Sullivan <rysulliv@redhat.com> Acked-by: Miroslav Benes <mbenes@suse.cz> M
On Thu 2024-06-06 09:53:48, Ryan Sullivan wrote: > Define a maximum allowable number of pids that can be livepatched in > test-syscall.sh as with extremely large machines the output from a > large number of processes overflows the dev/kmsg "expect" buffer in > the "check_result" function and causes a false error. > > Reported-by: CKI Project <cki-project@redhat.com> > Signed-off-by: Ryan Sullivan <rysulliv@redhat.com> JFYI, the patch has been committed into livepatching.git, branch for-6.11. Best Regards, Petr
diff --git a/tools/testing/selftests/livepatch/test-syscall.sh b/tools/testing/selftests/livepatch/test-syscall.sh index b76a881d4013..289eb7d4c4b3 100755 --- a/tools/testing/selftests/livepatch/test-syscall.sh +++ b/tools/testing/selftests/livepatch/test-syscall.sh @@ -15,7 +15,10 @@ setup_config start_test "patch getpid syscall while being heavily hammered" -for i in $(seq 1 $(getconf _NPROCESSORS_ONLN)); do +NPROC=$(getconf _NPROCESSORS_ONLN) +MAXPROC=128 + +for i in $(seq 1 $(($NPROC < $MAXPROC ? $NPROC : $MAXPROC))); do ./test_klp-call_getpid & pids[$i]="$!" done
Define a maximum allowable number of pids that can be livepatched in test-syscall.sh as with extremely large machines the output from a large number of processes overflows the dev/kmsg "expect" buffer in the "check_result" function and causes a false error. Reported-by: CKI Project <cki-project@redhat.com> Signed-off-by: Ryan Sullivan <rysulliv@redhat.com> --- tools/testing/selftests/livepatch/test-syscall.sh | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)