From: Paulo Zanoni <[email protected]> So far we control all the reads an none of them exceeds the current limit of 20 bytes, but we never think about this when reviewing patches, so add a big WARN. In case we ever hit that WARN, we whould change the size of the reply array.
Signed-off-by: Paulo Zanoni <[email protected]> --- drivers/gpu/drm/i915/intel_dp.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index 20e468c..f30b691 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -577,6 +577,8 @@ intel_dp_aux_native_read(struct intel_dp *intel_dp, msg_bytes = 4; reply_bytes = recv_bytes + 1; + if (WARN_ON(reply_bytes > sizeof(reply))) + return -E2BIG; for (;;) { ret = intel_dp_aux_ch(intel_dp, msg, msg_bytes, -- 1.8.3.1 _______________________________________________ Intel-gfx mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/intel-gfx
