On Tue, Jul 10, 2012 at 10:18:30PM +0800, wfg@xxxxxxxxxxxxxxx wrote: > Hi Al, > > The linux-next kernel reliably hung after this line: > > [ 4.846260] debug: unmapping init [mem 0xffff88000182a000-0xffff8800019fffff] > > And it's bisected to commit: > > commit 4a9ffe81385c2af04f296bea05482f34e02ea10d > Author: Al Viro <viro@xxxxxxxxxxxxxxxxxx> > Date: Sun Jun 24 09:56:45 2012 +0400 > > switch fput to task_work_add > > ... and schedule_work() for interrupt/kernel_thread callers > (and yes, now it *is* OK to call from interrupt). > > I tried add this debug aid: > > init_post(void): > + printk(KERN_WARNING "flush_delayed_fput\n"); > flush_delayed_fput(); > + printk(KERN_WARNING "flush_delayed_fput done\n"); > > And then it hangs after "flush_delayed_fput done". So it's not directly > freezing inside flush_delayed_fput().. Could you post a stack trace, etc.? I'll try to reproduce that one, obviously, but... -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
