[IA64] Fix NULL-pointer dereference in ia64_machine_kexec()

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This patch fixes a NULL-pointer dereference in ia64_machine_kexec().

The variable ia64_kimage is set in machine_kexec_prepare() which is
called from sys_kexec_load(). If kdump wasn't configured before,
ia64_kimage is NULL.  machine_kdump_on_init() passes ia64_kimage() to
machine_kexec() which assumes a valid value.

The patch also adds a few sanity checks for the image to simplify
debugging of similar problems in future.

Signed-off-by: Bernhard Walle <bwalle@suse.de>
Signed-off-by: Tony Luck <tony.luck@intel.com>

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Bernhard Walle 2007-01-28 13:47:02 +01:00 • committed by Tony Luck

parent 87f76d3aaf

commit c2c77fe8df

2 changed files with 7 additions and 0 deletions

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5

arch/ia64/kernel/crash.c

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2

arch/ia64/kernel/machine_kexec.c

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