| From: "Uladzislau Rezki (Sony)" <urezki@gmail.com> |
| Subject: lib/test_vmalloc.c: restrict default test mask to avoid test warnings |
| Date: Mon, 23 Jun 2025 20:40:35 +0200 |
| |
| When the vmalloc test is built into the kernel, it runs automatically |
| during the boot. The current-default "run_test_mask" includes all test |
| cases, including those which are designed to fail and which trigger kernel |
| warnings. |
| |
| These kernel splats can be misinterpreted as actual kernel bugs, leading |
| to false alarms and unnecessary reports. |
| |
| To address this, limit the default test mask to only the first few tests |
| which are expected to pass cleanly. These tests are safe and should not |
| generate any warnings unless there is a real bug. |
| |
| Users who wish to explicitly run specific test cases have to pass the |
| run_test_mask as a boot parameter or at module load time. |
| |
| Link: https://lkml.kernel.org/r/20250623184035.581229-2-urezki@gmail.com |
| Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com> |
| Reviewed-by: Baoquan He <bhe@redhat.com> |
| Cc: Harry Yoo <harry.yoo@oracle.com> |
| Cc: Suren Baghdasaryan <surenb@google.com> |
| Cc: David Wang <00107082@163.com> |
| Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
| --- |
| |
| lib/test_vmalloc.c | 2 +- |
| 1 file changed, 1 insertion(+), 1 deletion(-) |
| |
| --- a/lib/test_vmalloc.c~lib-test_vmallocc-restrict-default-test-mask-to-avoid-test-warnings |
| +++ a/lib/test_vmalloc.c |
| @@ -41,7 +41,7 @@ __param(int, nr_pages, 0, |
| __param(bool, use_huge, false, |
| "Use vmalloc_huge in fix_size_alloc_test"); |
| |
| -__param(int, run_test_mask, INT_MAX, |
| +__param(int, run_test_mask, 7, |
| "Set tests specified in the mask.\n\n" |
| "\t\tid: 1, name: fix_size_alloc_test\n" |
| "\t\tid: 2, name: full_fit_alloc_test\n" |
| _ |
