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Subject[PATCH] staging: vc04_services: fix NULL pointer dereference on pointer 'service'
Date
From: Colin Ian King <colin.king@canonical.com>

Currently, if pservice is null then service is set to NULL and immediately
afterwards service is dereferenced causing a null pointer dereference. Fix
this by bailing out early of the function with a null return.

Detected by CoverityScan, CID#1419681 ("Explicit null dereferenced")

Signed-off-by: Colin Ian King <colin.king@canonical.com>
---
drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

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 dc9f85c2a5da..4f9e738abddf 100644
--- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c
+++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c
@@ -2673,7 +2673,7 @@ vchiq_add_service_internal(VCHIQ_STATE_T *state,

if (!pservice) {
kfree(service);
- service = NULL;
+ return NULL;
}

service_quota = &state->service_quotas[service->localport];
--
2.11.0
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