提交 43cdff92 编写于 作者: S Sebastien Dugué 提交者: Linus Torvalds

[PATCH] Fix IPMI watchdog set_param_str() using kstrdup

set_param_str() cannot use kstrdup() to duplicate the parameter.  That's
fine when the driver is compiled as a module but it sure is not when built
into the kernel as the kernel parameters are parsed before the kmalloc
slabs are setup.
Signed-off-by: NSebastien Dugué <sebastien.dugue@bull.net>
Acked-by: NCorey Minyard <minyard@acm.org>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
上级 7479b1ce
......@@ -216,13 +216,13 @@ static int set_param_str(const char *val, struct kernel_param *kp)
{
action_fn fn = (action_fn) kp->arg;
int rv = 0;
char *dup, *s;
char valcp[16];
char *s;
dup = kstrdup(val, GFP_KERNEL);
if (!dup)
return -ENOMEM;
strncpy(valcp, val, 16);
valcp[15] = '\0';
s = strstrip(dup);
s = strstrip(valcp);
down_read(&register_sem);
rv = fn(s, NULL);
......@@ -235,7 +235,6 @@ static int set_param_str(const char *val, struct kernel_param *kp)
out_unlock:
up_read(&register_sem);
kfree(dup);
return rv;
}
......
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