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io_class string ctr: use strnlen

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Signed-off-by: Michal Rakowski <michal.rakowski@intel.com>
This commit is contained in:
Michal Rakowski 2020-01-24 15:11:33 +01:00
parent d6cd388d3e
commit 1b46117908
1 changed files with 1 additions and 6 deletions
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7
modules/cas_cache/classifier.c
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@ -198,17 +198,12 @@ static int _cas_cls_string_ctr(struct cas_classifier *cls,
return -EINVAL; return -EINVAL;
} }
len = strlen(data); len = strnlen(data, MAX_STRING_SPECIFIER_LEN);
if (len == 0) { if (len == 0) {
CAS_CLS_MSG(KERN_ERR, "String specifier is empty\n"); CAS_CLS_MSG(KERN_ERR, "String specifier is empty\n");
return -EINVAL; return -EINVAL;
} }
if (len > MAX_STRING_SPECIFIER_LEN) {
CAS_CLS_MSG(KERN_ERR, "String specifier to long: %s\n", data);
return -EINVAL;
}
ctx = kmalloc(sizeof(*ctx), GFP_KERNEL); ctx = kmalloc(sizeof(*ctx), GFP_KERNEL);
if (!ctx) if (!ctx)
return -ENOMEM; return -ENOMEM;