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| author | Paul E. McKenney <paulmck@kernel.org> | 2021-07-10 03:53:27 +0300 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@kernel.org> | 2021-07-27 21:39:30 +0300 |
| commit | 586e4d4193a653eef21f02b50dee89e2e4be208c (patch) | |
| tree | 659518c2f70f26f70869ed082aaaf9f5128b4c05 /kernel/scftorture.c | |
| parent | 9b9a80677fd80bd531cb05bfe205a40a51955939 (diff) | |
| download | linux-586e4d4193a653eef21f02b50dee89e2e4be208c.tar.xz | |
scftorture: Avoid NULL pointer exception on early exit
When scftorture finds an error in the module parameters controlling
the relative frequencies of smp_call_function*() variants, it takes an
early exit. So early that it has not allocated memory to track the
kthreads running the test, which results in a segfault. This commit
therefore checks for the existence of the memory before attempting
to stop the kthreads that would otherwise have been recorded in that
non-existent memory.
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Diffstat (limited to 'kernel/scftorture.c')
| -rw-r--r-- | kernel/scftorture.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/scftorture.c b/kernel/scftorture.c index 5cf40e438319..64a08288b1a6 100644 --- a/kernel/scftorture.c +++ b/kernel/scftorture.c @@ -513,7 +513,7 @@ static void scf_torture_cleanup(void) return; WRITE_ONCE(scfdone, true); - if (nthreads) + if (nthreads && scf_stats_p) for (i = 0; i < nthreads; i++) torture_stop_kthread("scftorture_invoker", scf_stats_p[i].task); else |