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25ef4a67e7
The target of the strex instruction to clear the exlusive monitor is currently the top of the stack. If the store succeeeds this corrupts r0 in pt_regs. Use the next stack location instead of the current one to prevent any chance of corrupting an in-use address. Signed-off-by: Seth Forshee <seth.forshee@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>