From fe88f2ee33731f0934e8fb26f762b6715e43ff6f Mon Sep 17 00:00:00 2001 From: Sasha Levin Date: Wed, 27 Feb 2013 17:03:28 -0800 Subject: [PATCH] kexec: prevent double free on image allocation failure If kimage_normal_alloc() fails to initialize an allocated kimage, it will free the image but would still set 'rimage', as a result kexec_load will try to free it again. This would explode as part of the freeing process is accessing internal members which point to uninitialized memory. Signed-off-by: Sasha Levin Cc: "Eric W. Biederman" Cc: Zhang Yanfei Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- kernel/kexec.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/kernel/kexec.c b/kernel/kexec.c index 2348bd6ef2af..855bfbbf4048 100644 --- a/kernel/kexec.c +++ b/kernel/kexec.c @@ -242,8 +242,6 @@ static int kimage_normal_alloc(struct kimage **rimage, unsigned long entry, if (result) goto out; - *rimage = image; - /* * Find a location for the control code buffer, and add it * the vector of segments so that it's pages will also be