diff options
Diffstat (limited to 'kernel/workqueue.c')
| -rw-r--r-- | kernel/workqueue.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/kernel/workqueue.c b/kernel/workqueue.c index 2945b094d871..5484d6e045c2 100644 --- a/kernel/workqueue.c +++ b/kernel/workqueue.c @@ -30,6 +30,8 @@ #include <linux/hardirq.h> #include <linux/mempolicy.h> #include <linux/freezer.h> +#include <linux/kallsyms.h> +#include <linux/debug_locks.h> /* * The per-CPU workqueue (if single thread, we always use the first @@ -253,6 +255,17 @@ static void run_workqueue(struct cpu_workqueue_struct *cwq) work_release(work); f(work); + if (unlikely(in_atomic() || lockdep_depth(current) > 0)) { + printk(KERN_ERR "BUG: workqueue leaked lock or atomic: " + "%s/0x%08x/%d\n", + current->comm, preempt_count(), + current->pid); + printk(KERN_ERR " last function: "); + print_symbol("%s\n", (unsigned long)f); + debug_show_held_locks(current); + dump_stack(); + } + spin_lock_irqsave(&cwq->lock, flags); cwq->remove_sequence++; wake_up(&cwq->work_done); |