From: Namhyung Kim Date: Tue, 20 Dec 2022 22:31:40 +0000 (-0800) Subject: perf/core: Call LSM hook after copying perf_event_attr X-Git-Tag: v6.6.17~5821^2 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=0a041ebca4956292cadfb14a63ace3a9c1dcb0a3;p=platform%2Fkernel%2Flinux-rpi.git perf/core: Call LSM hook after copying perf_event_attr 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 Signed-off-by: Peter Zijlstra (Intel) Reviewed-by: Joel Fernandes (Google) Cc: stable@vger.kernel.org Link: https://lkml.kernel.org/r/20221220223140.4020470-1-namhyung@kernel.org --- diff --git a/kernel/events/core.c b/kernel/events/core.c index 63d674c..d56328e 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -12321,12 +12321,12 @@ 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;