diff options
| author | Pan Xinhui <xinhuix.pan@intel.com> | 2015-07-20 08:57:13 +1000 |
|---|---|---|
| committer | Stephen Rothwell <sfr@canb.auug.org.au> | 2015-07-22 14:31:50 +1000 |
| commit | 5425fefb0ae79cff690d1cac340ed39d3d721a6f (patch) | |
| tree | 2564ea8bf8ca805df541c2f83ab7e6e49df4449d | |
| parent | 7c4c747e31f2d0f782bac69b8f53b65d70ec58d2 (diff) | |
lib/bitmap.c: fix a special string handling bug in __bitmap_parselist
If string end with '-', for exapmle, bitmap_parselist("1,0-",&mask,
nmaskbits), It is not in a valid pattern, so add a check after loop.
Return -EINVAL on such condition.
Signed-off-by: Pan Xinhui <xinhuix.pan@intel.com>
Cc: Yury Norov <yury.norov@gmail.com>
Cc: Chris Metcalf <cmetcalf@ezchip.com>
Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Cc: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
| -rw-r--r-- | lib/bitmap.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/bitmap.c b/lib/bitmap.c index eb21456be4b9..f549176e9250 100644 --- a/lib/bitmap.c +++ b/lib/bitmap.c @@ -546,6 +546,7 @@ static int __bitmap_parselist(const char *buf, unsigned int buflen, return -EINVAL; b = 0; in_range = 1; + at_start = 1; continue; } @@ -558,6 +559,9 @@ static int __bitmap_parselist(const char *buf, unsigned int buflen, at_start = 0; totaldigits++; } + /* if no digit is after '-', it's wrong*/ + if (at_start && in_range) + return -EINVAL; if (!(a <= b)) return -EINVAL; if (b >= nmaskbits) |