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由 Thomas Gleixner 提交于
If mce_device_init() fails then the mce device pointer is NULL and the AMD mce code happily dereferences it. Add a sanity check. Reported-by: NMarkus Trippelsdorf <markus@trippelsdorf.de> Reported-by: NBoris Ostrovsky <boris.ostrovsky@oracle.com> Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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