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Date: Thu, 21 Feb 2013 20:26:15 -0500 From: Sasha Levin <sasha.levin@...cle.com> To: ebiederm@...ssion.com Cc: kexec@...ts.infradead.org, linux-kernel@...r.kernel.org, Sasha Levin <sasha.levin@...cle.com> 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 <sasha.levin@...cle.com> --- kernel/kexec.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/kernel/kexec.c b/kernel/kexec.c index 2348bd6..855bfbb 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 -- 1.8.1.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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