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| author | Tony Lindgren <tony@atomide.com> | 2021-01-15 12:48:43 +0200 |
|---|---|---|
| committer | Tony Lindgren <tony@atomide.com> | 2021-01-15 12:48:43 +0200 |
| commit | 715a1284d89a740b197b3bad5eb20d36a397382f (patch) | |
| tree | 07ad2960ab66e56b3d1e151036262019a18e3df1 /lib/dynamic_debug.c | |
| parent | 181739822cf6f8f4e12b173913af2967a28906c0 (diff) | |
| parent | 06862d789ddde8a99c1e579e934ca17c15a84755 (diff) | |
Merge branch 'cpuidle-fix' into fixes
Diffstat (limited to 'lib/dynamic_debug.c')
| -rw-r--r-- | lib/dynamic_debug.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/lib/dynamic_debug.c b/lib/dynamic_debug.c index bd7b3aaa93c3..c70d6347afa2 100644 --- a/lib/dynamic_debug.c +++ b/lib/dynamic_debug.c @@ -561,9 +561,14 @@ static int ddebug_exec_queries(char *query, const char *modname) int dynamic_debug_exec_queries(const char *query, const char *modname) { int rc; - char *qry = kstrndup(query, PAGE_SIZE, GFP_KERNEL); + char *qry; /* writable copy of query */ - if (!query) + if (!query) { + pr_err("non-null query/command string expected\n"); + return -EINVAL; + } + qry = kstrndup(query, PAGE_SIZE, GFP_KERNEL); + if (!qry) return -ENOMEM; rc = ddebug_exec_queries(qry, modname); |