[PATCH] arm64: __clear_user: handle exceptions on strb

[Catalin Marinas]

On Wed, Nov 12, 2014 at 09:07:44PM +0000, Kyle McMartin wrote:
> ARM64 currently doesn't fix up faults on the single-byte (strb) case of
> __clear_user... which means that we can cause a nasty kernel panic as an
> ordinary user with any multiple PAGE_SIZE+1 read from /dev/zero.
> i.e.: dd if=/dev/zero of=foo ibs=1 count=1 (or ibs=65537, etc.)

Thanks for this, it's been like this for a while. Applied.

-- 
Catalin