[PATCH 4.4 44/87] sysrq: Fix warning in sysrq generated crash.

4.4-stable review patch. If anyone has any objections, please let me know. -- From: Ani Sinha commit 984cf355aeaa8f2eda3861b50d0e8d3e3f77e83b upstream. Commit 984d74a72076a1 ("sysrq: rcu-ify __handle_sysrq") replaced spin_lock_irqsave() calls with

[PATCH 4.4 44/87] sysrq: Fix warning in sysrq generated crash.

4.4-stable review patch. If anyone has any objections, please let me know. -- From: Ani Sinha commit 984cf355aeaa8f2eda3861b50d0e8d3e3f77e83b upstream. Commit 984d74a72076a1 ("sysrq: rcu-ify __handle_sysrq") replaced spin_lock_irqsave() calls with rcu_read_lock() calls in