This is a note to let you know that I've just added the patch titled
perf: Fix the nr_addr_filters fix
to the 6.6-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
perf-fix-the-nr_addr_filters-fix.patch
and it can be found in the queue-6.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit ba00b36b75e73fb35b2311a7c85a0d67f6954b7c
Author: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Date: Wed Nov 22 11:07:56 2023 +0100
perf: Fix the nr_addr_filters fix
[ Upstream commit 388a1fb7da6aaa1970c7e2a7d7fcd983a87a8484 ]
Thomas reported that commit 652ffc2104ec ("perf/core: Fix narrow
startup race when creating the perf nr_addr_filters sysfs file") made
the entire attribute group vanish, instead of only the nr_addr_filters
attribute.
Additionally a stray return.
Insufficient coffee was involved with both writing and merging the
patch.
Fixes: 652ffc2104ec ("perf/core: Fix narrow startup race when creating the perf nr_addr_filters sysfs file")
Reported-by: Thomas Richter <tmricht@xxxxxxxxxxxxx>
Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>
Tested-by: Thomas Richter <tmricht@xxxxxxxxxxxxx>
Link: https://lkml.kernel.org/r/20231122100756.GP8262@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/kernel/events/core.c b/kernel/events/core.c
index f22c540350a1..fe543e7898f5 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -11422,12 +11422,10 @@ static umode_t pmu_dev_is_visible(struct kobject *kobj, struct attribute *a, int
struct device *dev = kobj_to_dev(kobj);
struct pmu *pmu = dev_get_drvdata(dev);
- if (!pmu->nr_addr_filters)
+ if (n == 2 && !pmu->nr_addr_filters)
return 0;
return a->mode;
-
- return 0;
}
static struct attribute_group pmu_dev_attr_group = {
