1 files changed, 11 insertions, 0 deletions

diff --git a/kernel/softirq.c b/kernel/softirq.c
index 82e32aadedd8..1cf1e2f2c406 100644
--- a/kernel/softirq.c
+++ b/kernel/softirq.c
@@ -205,7 +205,18 @@ restart:
 
         do {
                 if (pending & 1) {
+                        int prev_count = preempt_count();
+
                         h->action(h);
+
+                        if (unlikely(prev_count != preempt_count())) {
+                                printk(KERN_ERR "huh, entered sotfirq %ld %p"
+                                       "with preempt_count %08x,"
+                                       " exited with %08x?\n", h - softirq_vec,
+                                       h->action, prev_count, preempt_count());
+                                preempt_count() = prev_count;
+                        }
+
                         rcu_bh_qsctr_inc(cpu);
                 }
                 h++;