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(parent: 536e7d5) | patch
asm-generic: make copy_from_user() zero the destination properly
authorAl Viro <viro@zeniv.linux.org.uk>
Wed, 17 Aug 2016 20:36:37 +0000 (16:36 -0400)
committerBen Hutchings <ben@decadent.org.uk>
Sun, 20 Nov 2016 01:01:37 +0000 (01:01 +0000)
commit263fd98a0f2c8bb934ac2a25d97f9913378a4803
tree00e143cfa3510dded32ad044d08bcb1be9eccb79tree | snapshot
parent536e7d5ea02825c12e64356149a1f4c6691efd7bcommit | diff
asm-generic: make copy_from_user() zero the destination properly

commit 2545e5da080b4839dd859e3b09343a884f6ab0e3 upstream.

... in all cases, including the failing access_ok()

Note that some architectures using asm-generic/uaccess.h have
__copy_from_user() not zeroing the tail on failure halfway
through.  This variant works either way.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
include/asm-generic/uaccess.h diff | blob | history
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