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Message-ID: <167214188410.4906.8195204511062431247.tip-bot2@tip-bot2>
Date: Tue, 27 Dec 2022 11:51:24 -0000
From: "tip-bot2 for Ravi Bangoria" <tip-bot2@...utronix.de>
To: linux-tip-commits@...r.kernel.org
Cc: Dan Carpenter <error27@...il.com>,
Ravi Bangoria <ravi.bangoria@....com>,
"Peter Zijlstra (Intel)" <peterz@...radead.org>, x86@...nel.org,
linux-kernel@...r.kernel.org
Subject: [tip: perf/urgent] perf core: Return error pointer if inherit_event()
fails to find pmu_ctx
The following commit has been merged into the perf/urgent branch of tip:
Commit-ID: e2d371484653ac83b970d3ebcf343383f39f8b6b
Gitweb: https://git.kernel.org/tip/e2d371484653ac83b970d3ebcf343383f39f8b6b
Author: Ravi Bangoria <ravi.bangoria@....com>
AuthorDate: Fri, 18 Nov 2022 10:45:39 +05:30
Committer: Peter Zijlstra <peterz@...radead.org>
CommitterDate: Tue, 27 Dec 2022 12:44:00 +01:00
perf core: Return error pointer if inherit_event() fails to find pmu_ctx
inherit_event() returns NULL only when it finds orphaned events
otherwise it returns either valid child_event pointer or an error
pointer. Follow the same when it fails to find pmu_ctx.
Fixes: bd2756811766 ("perf: Rewrite core context handling")
Reported-by: Dan Carpenter <error27@...il.com>
Signed-off-by: Ravi Bangoria <ravi.bangoria@....com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>
Link: https://lkml.kernel.org/r/20221118051539.820-1-ravi.bangoria@amd.com
---
kernel/events/core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/events/core.c b/kernel/events/core.c
index eacc370..4bd2434 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -13231,7 +13231,7 @@ inherit_event(struct perf_event *parent_event,
pmu_ctx = find_get_pmu_context(child_event->pmu, child_ctx, child_event);
if (IS_ERR(pmu_ctx)) {
free_event(child_event);
- return NULL;
+ return ERR_CAST(pmu_ctx);
}
child_event->pmu_ctx = pmu_ctx;
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