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perf: Fix IS_ERR() vs NULL check in inherit_event()
author
Gaosheng Cui
<cuigaosheng1@huawei.com>
Mon, 14 Nov 2022 09:18:33 +0000
(17:18 +0800)
committer
Peter Zijlstra
<peterz@infradead.org>
Tue, 15 Nov 2022 21:30:11 +0000
(22:30 +0100)
The find_get_pmu_context() returns an ERR_PTR() on failure, we should use
IS_ERR() to check the return value.
Fixes:
bd2756811766
("perf: Rewrite core context handling")
Signed-off-by: Gaosheng Cui <cuigaosheng1@huawei.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link:
https://lkml.kernel.org/r/20221114091833.1492575-1-cuigaosheng1@huawei.com
kernel/events/core.c
patch
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diff --git
a/kernel/events/core.c
b/kernel/events/core.c
index
baa2997
..
baa6edf
100644
(file)
--- a/
kernel/events/core.c
+++ b/
kernel/events/core.c
@@
-13171,7
+13171,7
@@
inherit_event(struct perf_event *parent_event,
return child_event;
pmu_ctx = find_get_pmu_context(child_event->pmu, child_ctx, child_event);
- if (
!pmu_ctx
) {
+ if (
IS_ERR(pmu_ctx)
) {
free_event(child_event);
return NULL;
}