The patch titled
Subject: include/linux/cpumask.h: fix double string traverse in cpumask_parse
has been added to the -mm tree. Its filename is
cpumask-fix-double-string-traverse-in-cpumask_parse.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/cpumask-fix-double-string-traverse-in-cpumask_parse.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/cpumask-fix-double-string-traverse-in-cpumask_parse.patch
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From: Yury Norov <ynorov@xxxxxxxxxxx>
Subject: include/linux/cpumask.h: fix double string traverse in cpumask_parse
cpumask_parse() finds first occurrence of either or strchr() and strlen().
We can do it better with a single call of strchrnul().
Link: http://lkml.kernel.org/r/20190409204208.12190-1-ynorov@xxxxxxxxxxx
Signed-off-by: Yury Norov <ynorov@xxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/cpumask.h | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
--- a/include/linux/cpumask.h~cpumask-fix-double-string-traverse-in-cpumask_parse
+++ a/include/linux/cpumask.h
@@ -633,8 +633,7 @@ static inline int cpumask_parselist_user
*/
static inline int cpumask_parse(const char *buf, struct cpumask *dstp)
{
- char *nl = strchr(buf, '\n');
- unsigned int len = nl ? (unsigned int)(nl - buf) : strlen(buf);
+ unsigned int len = (unsigned int)(strchrnul(buf, '\n') - buf);
return bitmap_parse(buf, len, cpumask_bits(dstp), nr_cpumask_bits);
}
_
Patches currently in -mm which might be from ynorov@xxxxxxxxxxx are
cpumask-fix-double-string-traverse-in-cpumask_parse.patch
