On Thu, Aug 25, 2016 at 06:44:25AM +0200, Stefan Wahren wrote: > Hi Fabio, > > > Fabio Estevam <[email protected]> hat am 25. August 2016 um 00:52 > > geschrieben: > > > > > > Hi Stefan, > > > > On Tue, Aug 23, 2016 at 5:38 PM, Stefan Wahren <[email protected]> > > wrote: > > > Hi, > > > > > > i'm using a iMX233-OLinuXino board and i get the following warning during > > > boot > > > with 4.8.0-rc2-next-20160819: > > > > > > [ 2.450000] ------------[ cut here ]------------ > > > [ 2.450000] WARNING: CPU: 0 PID: 42 at kernel/sched/core.c:7602 > > > __might_sleep+0x8c/0xa0 > > > [ 2.470000] do not call blocking ops when !TASK_RUNNING; state=1 set at > > > [<c048f730>] dcp_chan_thread_aes+0x24/0x664 > > > > Did you select any debug option to observe such messages? > > yes, it's CONFIG_DEBUG_ATOMIC_SLEEP. After a short web search i found this lwn > article [1]. > I will try the suggested solution.
The problem is that the driver is setting the task state too early. In fact, there is no reason why it should be using a kthread at all. Someone should convert this over to a work queue. Cheers, -- Email: Herbert Xu <[email protected]> Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt -- To unsubscribe from this list: send the line "unsubscribe linux-crypto" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
