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Commit 6407df5c authored by Huang Ying's avatar Huang Ying Committed by H. Peter Anvin
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x86, kexec: fix crashdump panic with CONFIG_KEXEC_JUMP



Tim Starling reported that crashdump will panic with kernel compiled
with CONFIG_KEXEC_JUMP due to null pointer deference in
machine_kexec_32.c: machine_kexec(), when deferencing
kexec_image. Refering to:

http://bugzilla.kernel.org/show_bug.cgi?id=13265

This patch fixes the BUG via replacing global variable reference:
kexec_image in machine_kexec() with local variable reference: image,
which is more appropriate, and will not be null.

Same BUG is in machine_kexec_64.c too, so fixed too in the same way.

[ Impact: fix crash on kexec ]

Reported-by: default avatarTim Starling <tstarling@wikimedia.org>
Signed-off-by: default avatarHuang Ying <ying.huang@intel.com>
LKML-Reference: <1241751101.6259.85.camel@yhuang-dev.sh.intel.com>
Signed-off-by: default avatarH. Peter Anvin <hpa@zytor.com>
parent 49834396
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