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authorLinus Torvalds <torvalds@linux-foundation.org>2011-10-26 14:39:47 +0200
committerLinus Torvalds <torvalds@linux-foundation.org>2011-10-26 14:39:47 +0200
commit2355e4290336fcda4b4a799448f745155a000226 (patch)
tree81814353573f5a47ac8f96d75221cfee46a0f92c /kernel
parente33bae14fd8da449d735552d78e6dd33ece0458c (diff)
parentb1e4d20cbf2ef8e27515da032b95fdcbb5b06bf1 (diff)
Merge git://github.com/rustyrussell/linux
* git://github.com/rustyrussell/linux: params: make dashes and underscores in parameter names truly equal kmod: prevent kmod_loop_msg overflow in __request_module()
Diffstat (limited to 'kernel')
-rw-r--r--kernel/kmod.c4
-rw-r--r--kernel/params.c21
2 files changed, 17 insertions, 8 deletions
diff --git a/kernel/kmod.c b/kernel/kmod.c
index ddc7644c130..a4bea97c75b 100644
--- a/kernel/kmod.c
+++ b/kernel/kmod.c
@@ -114,10 +114,12 @@ int __request_module(bool wait, const char *fmt, ...)
atomic_inc(&kmod_concurrent);
if (atomic_read(&kmod_concurrent) > max_modprobes) {
/* We may be blaming an innocent here, but unlikely */
- if (kmod_loop_msg++ < 5)
+ if (kmod_loop_msg < 5) {
printk(KERN_ERR
"request_module: runaway loop modprobe %s\n",
module_name);
+ kmod_loop_msg++;
+ }
atomic_dec(&kmod_concurrent);
return -ENOMEM;
}
diff --git a/kernel/params.c b/kernel/params.c
index 22df3e0d142..821788947e4 100644
--- a/kernel/params.c
+++ b/kernel/params.c
@@ -67,20 +67,27 @@ static void maybe_kfree_parameter(void *param)
}
}
-static inline char dash2underscore(char c)
+static char dash2underscore(char c)
{
if (c == '-')
return '_';
return c;
}
-static inline int parameq(const char *input, const char *paramname)
+bool parameqn(const char *a, const char *b, size_t n)
{
- unsigned int i;
- for (i = 0; dash2underscore(input[i]) == paramname[i]; i++)
- if (input[i] == '\0')
- return 1;
- return 0;
+ size_t i;
+
+ for (i = 0; i < n; i++) {
+ if (dash2underscore(a[i]) != dash2underscore(b[i]))
+ return false;
+ }
+ return true;
+}
+
+bool parameq(const char *a, const char *b)
+{
+ return parameqn(a, b, strlen(a)+1);
}
static int parse_one(char *param,