Messages in this thread Patch in this message | | | Date | Wed, 23 May 2012 11:24:57 -0700 | From | Tejun Heo <> | Subject | Re: Linux 3.4 released |
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Hello, Jörg-Volker.
Please always use reply-to-all.
On Tue, May 22, 2012 at 09:50:10PM +0200, Jörg-Volker Peetz wrote: > no, changing to printk(KERN_CRIT "XXX: ...", ...) in kernel/workqueue.c didn't > print anything I could read. Would it appear before the "panic screen"? But I'm > not able to scroll back. > The Panic screen starts with
It should appear right above BUG:. Can you please try the following instead?
Thanks.
diff --git a/kernel/workqueue.c b/kernel/workqueue.c index 5abf42f..57c33ef 100644 --- a/kernel/workqueue.c +++ b/kernel/workqueue.c @@ -1096,10 +1096,18 @@ queue_work_on(int cpu, struct workqueue_struct *wq, struct work_struct *work) } EXPORT_SYMBOL_GPL(queue_work_on); +#include <linux/uaccess.h> static void delayed_work_timer_fn(unsigned long __data) { struct delayed_work *dwork = (struct delayed_work *)__data; struct cpu_workqueue_struct *cwq = get_work_cwq(&dwork->work); + unsigned long v; + + if (probe_kernel_read(&v, &cwq->wq, sizeof(v))) { + printk(KERN_CRIT "XXX delayed_work_timer_fn: cwq %p, fn=%pf\n", + cwq, dwork->work.func); + return; + } __queue_work(smp_processor_id(), cwq->wq, &dwork->work); } -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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