[PATCH] ARM: kprobes: Change testcase with unpredictable STRD instruction
Russell King - ARM Linux
linux at arm.linux.org.uk
Wed Nov 30 18:56:44 EST 2011
On Sun, Nov 27, 2011 at 12:11:25PM +0000, Tixy wrote:
> There is a kprobes testcase for the instruction "strd r2, [r3], r4".
> This has unpredictable behaviour as it uses r3 for register writeback
> addressing and also stores it to memory.
> On a cortex A9, this testcase would fail because the instruction writes
> the updated value of r3 to memory, whereas the kprobes emulation code
> writes the original value.
> Fix this by changing testcase to used r5 instead of r3.
Is this a -stable candidate?
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