diff options
| author | Shaohua Li <shli@fb.com> | 2017-05-19 08:04:59 -0700 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2017-05-19 09:21:15 -0600 |
| commit | 5f3394530fbe90d3bcd1c204618960bc50236578 (patch) | |
| tree | fb7425b6f00ef9186ab270bb13149c2d8881434f | |
| parent | 69c8ebf83213e6165b13d94ec599b861467ee2dc (diff) | |
| download | linux-5f3394530fbe90d3bcd1c204618960bc50236578.tar.bz2 | |
blktrace: fix integer parse
sscanf is a very poor way to parse integer. For example, I input
"discard" for act_mask, it gets 0xd and completely messes up. Using
correct API to do integer parse.
This patch also makes attributes accept any base of integer.
Signed-off-by: Shaohua Li <shli@fb.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
| -rw-r--r-- | kernel/trace/blktrace.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c index bd8ae8d5ae9c..193c5f5e3f79 100644 --- a/kernel/trace/blktrace.c +++ b/kernel/trace/blktrace.c @@ -1662,14 +1662,14 @@ static ssize_t sysfs_blk_trace_attr_store(struct device *dev, goto out; if (attr == &dev_attr_act_mask) { - if (sscanf(buf, "%llx", &value) != 1) { + if (kstrtoull(buf, 0, &value)) { /* Assume it is a list of trace category names */ ret = blk_trace_str2mask(buf); if (ret < 0) goto out; value = ret; } - } else if (sscanf(buf, "%llu", &value) != 1) + } else if (kstrtoull(buf, 0, &value)) goto out; ret = -ENXIO; |