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Commit 79ef2bb0 authored by Thomas Gleixner's avatar Thomas Gleixner
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clocksource: Prevent NULL pointer dereference


Writing a zero length string to sys/.../current_clocksource will cause
a NULL pointer dereference if the clock events system is in one shot
(highres or nohz) mode.

Pointed-out-by: default avatarDan Carpenter <error27@gmail.com>
LKML-Reference: <alpine.DEB.2.00.0907191545580.12306@bicker>
Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
parent 4841158b
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