From 02197fa749e21107e3330b2a244f7d5c455e456e Mon Sep 17 00:00:00 2001 From: Ovidiu Panait Date: Sun, 5 Apr 2020 19:47:40 +0300 Subject: [PATCH] dm: dump.c: Fix segfault when entry->of_match is NULL 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 e73ebea..b504639 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); -- 2.7.4