From 6f2370d260c4dc6eba1de2b4f55786f99abf937c Mon Sep 17 00:00:00 2001 From: Stefan Wahren Date: Fri, 26 May 2017 00:26:24 +0200 Subject: [PATCH] staging: vchiq_core: Don't BUG if process is unexpected Bail out properly if the process index doesn't match the remote insert. We also drop the BUG in case the process index is at local insert, so we can trigger the WARN_ON again some steps later. Signed-off-by: Stefan Wahren Signed-off-by: Greg Kroah-Hartman --- .../vc04_services/interface/vchiq_arm/vchiq_core.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c index 9cdc98570a22..b0119b80b776 100644 --- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c +++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c @@ -1963,9 +1963,14 @@ parse_rx_slots(VCHIQ_STATE_T *state) mutex_unlock(&service->bulk_mutex); break; } - - BUG_ON(queue->process == queue->local_insert); - BUG_ON(queue->process != queue->remote_insert); + if (queue->process != queue->remote_insert) { + pr_err("%s: p %x != ri %x\n", + __func__, + queue->process, + queue->remote_insert); + mutex_unlock(&service->bulk_mutex); + goto bail_not_ready; + } bulk = &queue->bulks[ BULK_INDEX(queue->remote_insert)]; -- 2.20.1