From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 From: Peter Jones Date: Sun, 19 Jul 2020 16:08:08 -0400 Subject: [PATCH] emu: make grub_free(NULL) safe The grub_free() implementation in kern/mm.c safely handles NULL pointers, and code at many places depends on this. We don't know that the same is true on all host OSes, so we need to handle the same behavior in grub-emu's implementation. Signed-off-by: Peter Jones Reviewed-by: Darren Kenny Upstream-commit-id: 96bb109e658 --- grub-core/kern/emu/mm.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/grub-core/kern/emu/mm.c b/grub-core/kern/emu/mm.c index 145b01d37..4d1046a21 100644 --- a/grub-core/kern/emu/mm.c +++ b/grub-core/kern/emu/mm.c @@ -60,7 +60,8 @@ grub_zalloc (grub_size_t size) void grub_free (void *ptr) { - free (ptr); + if (ptr) + free (ptr); } void *