Fix a BUG_ON from 2009. I have hit it while fuzzing >control on some
other patches, and panic from user input is bad. Replace the BUG_ON
with pr_error and return -EINVAL.
Signed-off-by: Jim Cromie <[email protected]>
---
lib/dynamic_debug.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/lib/dynamic_debug.c b/lib/dynamic_debug.c
index bde96ad867c6..2ac1bd7f105f 100644
--- a/lib/dynamic_debug.c
+++ b/lib/dynamic_debug.c
@@ -660,7 +660,11 @@ static int ddebug_tokenize(char *buf, char *words[], int maxwords)
} else {
for (end = buf; *end && !isspace(*end); end++)
;
- BUG_ON(end == buf);
+ if (end == buf) {
+ pr_err("parse err after word:%d=%s\n", nwords,
+ nwords ? words[nwords - 1] : "<none>");
+ return -EINVAL;
+ }
}
/* `buf' is start of word, `end' is one past its end */
--
2.43.0