perf: Fix perf_event_validate_size()

Browse source

[ Upstream commit 382c27f4ed ]

Budimir noted that perf_event_validate_size() only checks the size of
the newly added event, even though the sizes of all existing events
can also change due to not all events having the same read_format.

When we attach the new event, perf_group_attach(), we do re-compute
the size for all events.

Fixes: a723968c0e ("perf: Fix u16 overflows")
Reported-by: Budimir Markovic <markovicbudimir@gmail.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

This commit is contained in:

Peter Zijlstra 2023-11-29 15:24:52 +01:00 • committed by Greg Kroah-Hartman

parent b0c195a825

commit 06dec254c5

1 changed files with 38 additions and 23 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

61

kernel/events/core.c

View file