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(parent: b8569d2) | patch
powerpc/powernv: Check sysfs size before copying
authorJoel Stanley <joel@jms.id.au>
Thu, 24 Apr 2014 07:25:35 +0000 (16:55 +0930)
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>
Mon, 28 Apr 2014 03:08:48 +0000 (13:08 +1000)
commit85390378f0a6abf3bdb10c3d504d77862a2d0ec9
treef4b8f3bec96478f6a5ce0dae9ea0b9ce8ce9b504tree | snapshot (tar.gz zip)
parentb8569d230416c490065098684adf13c1751cb830commit | diff
powerpc/powernv: Check sysfs size before copying

The sysparam code currently uses the userspace supplied number of
bytes when memcpy()ing in to a local 64-byte buffer.

Limit the maximum number of bytes by the size of the buffer.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
arch/powerpc/platforms/powernv/opal-sysparam.c diff | blob | blame | history