From patchwork Sun Apr 5 16:47:40 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ovidiu Panait X-Patchwork-Id: 237208 List-Id: U-Boot discussion From: ovpanait at gmail.com (Ovidiu Panait) Date: Sun, 5 Apr 2020 19:47:40 +0300 Subject: [PATCH 1/2] dm: dump.c: Fix segfault when entry->of_match is NULL Message-ID: <20200405164741.11243-1-ovpanait@gmail.com> Currently, dm drivers command produces a segfault: => dm drivers Driver Compatible -------------------------------- Segmentation fault (core dumped) This is caused by a NULL pointer dereference of entry->of_match. Add a check to prevent this. Signed-off-by: Ovidiu Panait Cc: Sean Anderson Cc: Simon Glass --- drivers/core/dump.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/core/dump.c b/drivers/core/dump.c index e73ebeabcc..b5046398d4 100644 --- a/drivers/core/dump.c +++ b/drivers/core/dump.c @@ -107,7 +107,8 @@ void dm_dump_drivers(void) puts("Driver Compatible\n"); puts("--------------------------------\n"); for (entry = d; entry < d + n_ents; entry++) { - for (match = entry->of_match; match->compatible; match++) + for (match = entry->of_match; + match && match->compatible; match++) printf("%-20.20s %s\n", match == entry->of_match ? entry->name : "", match->compatible);