]> git.baikalelectronics.ru Git - kernel.git/commit
regset: Prevent null pointer reference on readonly regsets
authorH. Peter Anvin <hpa@zytor.com>
Fri, 2 Mar 2012 18:43:48 +0000 (10:43 -0800)
committerLinus Torvalds <torvalds@linux-foundation.org>
Fri, 2 Mar 2012 19:38:15 +0000 (11:38 -0800)
commit70b975e41c48339ae5987149f137682bc06ce854
tree11bf3ac4f0d0b3961fcf1c98ee5cd1824ebd5614
parent71cb47961b97074a14d452e2f1b33361005c42d6
regset: Prevent null pointer reference on readonly regsets

The regset common infrastructure assumed that regsets would always
have .get and .set methods, but not necessarily .active methods.
Unfortunately people have since written regsets without .set methods.

Rather than putting in stub functions everywhere, handle regsets with
null .get or .set methods explicitly.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Reviewed-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: Roland McGrath <roland@hack.frob.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
fs/binfmt_elf.c
include/linux/regset.h