Re: [PATCH] random: Support freezable kthreads in add_hwgenerator_randomness()

[Sebastian Andrzej Siewior]

On 2019-08-22 15:55:19 [+1000], Herbert Xu wrote:
> Patch applied.  Thanks.
[ ff296293b3538 ("random: Support freezable kthreads in add_hwgenerator_randomness()") ]

and since kthread_freezable_should_stop() has might_sleep() in it, I get
this:

|: do not call blocking ops when !TASK_RUNNING; state=1 set at [<00000000349d1489>] prepare_to_wait_event+0x5a/0x180
|: WARNING: CPU: 0 PID: 828 at kernel/sched/core.c:6741 __might_sleep+0x6f/0x80
|: Modules linked in:
|:
|: CPU: 0 PID: 828 Comm: hwrng Not tainted 5.3.0-rc7-next-20190903+ #46
|: RIP: 0010:__might_sleep+0x6f/0x80
â
|: Call Trace:
|:  kthread_freezable_should_stop+0x1b/0x60
|:  add_hwgenerator_randomness+0xdd/0x130
|:  hwrng_fillfn+0xbf/0x120
|:  kthread+0x10c/0x140
|:  ret_from_fork+0x27/0x50

Sebastian