Re: [PATCH] x86 spinlock: Fix memory corruption on completing completions
flat view
From: Peter Zijlstra <peterz@infradead.org>
Date: 2015-02-09 12:02:55
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On Mon, Feb 09, 2015 at 03:04:22PM +0530, Raghavendra K T wrote:
So we have 3 choices, 1. xadd 2. continue with current approach. 3. a read before unlock and also after that.
For the truly paranoid we have probe_kernel_address(), suppose the lock was in module space and the module just got unloaded under us.