irq_work: Make irq_work_queue() NMI-safe again

Someone carelessly put NMI unsafe code in irq_work_queue(), breaking
just about every single user. Also, someone has a terrible comment
style.

Fixes: e2b5bcf9f5ba ("irq_work: record irq_work_queue() call stack")
Reported-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/YL+uBq8LzXXZsYVf@hirez.programming.kicks-ass.net

diff --git a/kernel/irq_work.c b/kernel/irq_work.c
index 23a7a0ba1388a2aae1bbd253437bfaecb3ddd3d0..db8c248ebc8c81a9596bbc46ecd2583f85f62e24 100644 (file)
--- a/kernel/irq_work.c
+++ b/kernel/irq_work.c
@@ -70,9 +70,6 @@ bool irq_work_queue(struct irq_work *work)
        if (!irq_work_claim(work))
                return false;
 
-       /*record irq_work call stack in order to print it in KASAN reports*/
-       kasan_record_aux_stack(work);
-
        /* Queue the entry and raise the IPI if needed. */
        preempt_disable();
        __irq_work_queue_local(work);