Messages in this thread Patch in this message | | | From | Namhyung Kim <> | Subject | [PATCH] perf/core: Call LSM hook after copying perf_event_attr | Date | Thu, 2 Jun 2022 15:47:54 -0700 |
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It passes the attr struct to the security_perf_event_open() but it's not initialized yet.
Fixes: da97e18458fb ("perf_event: Add support for LSM and SELinux checks") Cc: Joel Fernandes (Google) <joel@joelfernandes.org> Signed-off-by: Namhyung Kim <namhyung@kernel.org> --- kernel/events/core.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/kernel/events/core.c b/kernel/events/core.c index 7858bafffa9d..e035545f624f 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -12033,12 +12033,12 @@ SYSCALL_DEFINE5(perf_event_open, if (flags & ~PERF_FLAG_ALL) return -EINVAL; - /* Do we allow access to perf_event_open(2) ? */ - err = security_perf_event_open(&attr, PERF_SECURITY_OPEN); + err = perf_copy_attr(attr_uptr, &attr); if (err) return err; - err = perf_copy_attr(attr_uptr, &attr); + /* Do we allow access to perf_event_open(2) ? */ + err = security_perf_event_open(&attr, PERF_SECURITY_OPEN); if (err) return err; -- 2.36.1.255.ge46751e96f-goog
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