From 50cccc699ed849d31c9e3f7643db33edade20e4e Mon Sep 17 00:00:00 2001 From: Vivek Goyal Date: Sat, 25 Jun 2005 14:57:55 -0700 Subject: [PATCH] [PATCH] Kexec on panic vmlinux initrd fix This is a minor bug fix in kexec to resolve the problem of loading panic kernel with initrd. o Problem: Loading a capture kenrel fails if initrd is also being loaded. This has been observed for vmlinux image for kexec on panic case. o This patch fixes the problem. In segment location and size verification logic, minor correction has been done. Segment memory end (mend) should be mstart + memsz - 1. This one byte offset was source of failure for initrd loading which was being loaded at hole boundary. Signed-off-by: Vivek Goyal Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- kernel/kexec.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/kexec.c b/kernel/kexec.c index def9c73ec9a..a0411b3bd54 100644 --- a/kernel/kexec.c +++ b/kernel/kexec.c @@ -264,7 +264,7 @@ static int kimage_crash_alloc(struct kimage **rimage, unsigned long entry, for (i = 0; i < nr_segments; i++) { unsigned long mstart, mend; mstart = image->segment[i].mem; - mend = mstart + image->segment[i].memsz; + mend = mstart + image->segment[i].memsz - 1; /* Ensure we are within the crash kernel limits */ if ((mstart < crashk_res.start) || (mend > crashk_res.end)) goto out; -- 2.20.1