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[PATCH] Kexec on panic vmlinux initrd fix

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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 <vgoyal@in.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Vivek Goyal 2005-06-25 14:57:55 -07:00 committed by Linus Torvalds
parent dc009d9243
commit 50cccc699e
1 changed files with 1 additions and 1 deletions
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2
kernel/kexec.c
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@ -264,7 +264,7 @@ static int kimage_crash_alloc(struct kimage **rimage, unsigned long entry,
for (i = 0; i < nr_segments; i++) { for (i = 0; i < nr_segments; i++) {
unsigned long mstart, mend; unsigned long mstart, mend;
mstart = image->segment[i].mem; 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 */ /* Ensure we are within the crash kernel limits */
if ((mstart < crashk_res.start) || (mend > crashk_res.end)) if ((mstart < crashk_res.start) || (mend > crashk_res.end))
goto out; goto out;