[PATCH 0/2] x86: unify / improve copy_*_user()

[Jan Beulich]

The first of these patches unifies copy_from_user(), thus making its
buffer size checking consistent between 32- and 64-bit.

The second one unifies copy_to_user(), at once adding similar
buffer size checking (to help avoiding information leaks).

1: x86: unify copy_from_user() size checking
2: x86: unify copy_to_user() and add size checking to it

Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
Cc: Arjan van de Ven <arjan@xxxxxxxxxxxxxxx>

 include/asm/uaccess.h    |   98 +++++++++++++++++++++++++++++++++++++++++++++++
 include/asm/uaccess_32.h |   29 -------------
 include/asm/uaccess_64.h |   28 -------------
 lib/usercopy_32.c        |    8 +--
 4 files changed, 101 insertions(+), 62 deletions(-)


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