On Wed, May 27, 2015 at 11:41:31AM +0100, Rui Miguel Silva wrote:
> do not try to set cancel function in synchronous operations in
> ffs_epfile_{read,write}_iter.
>
> With, 70e60d917 gadget/function/f_fs.c: switch to ->{read,write}_iter()
> if CONFIG_AIO is disable there is no problem as kiocb_set_cancel_fn
> is a nop, with this option enabled it will try to use ctx that is not
> allocated for synchronous operations. And for that will dereference a
> null at the set cancel function in any synchronous read/write.
ACK. And it's -stable fodder for 4.0
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