From: Namhyung Kim namhyung@kernel.org
commit 0a041ebca4956292cadfb14a63ace3a9c1dcb0a3 upstream.
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") Signed-off-by: Namhyung Kim namhyung@kernel.org Signed-off-by: Peter Zijlstra (Intel) peterz@infradead.org Reviewed-by: Joel Fernandes (Google) joel@joelfernandes.org Cc: stable@vger.kernel.org Link: https://lkml.kernel.org/r/20221220223140.4020470-1-namhyung@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- kernel/events/core.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)
--- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -11781,12 +11781,12 @@ 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;