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dyndbg: fix old BUG_ON in >control parser

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Fix a BUG_ON from 2009.  Even if it looks "unreachable" (I didn't
really look), lets make sure by removing it, doing pr_err and return
-EINVAL instead.

Cc: stable <stable@kernel.org>
Signed-off-by: Jim Cromie <jim.cromie@gmail.com>
Link: https://lore.kernel.org/r/20240429193145.66543-2-jim.cromie@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jim Cromie 2024-04-29 13:31:11 -06:00 committed by Greg Kroah-Hartman
parent 9b83aa7a50
commit 00e7d3bea2
1 changed files with 5 additions and 1 deletions
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6
lib/dynamic_debug.c
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@ -302,7 +302,11 @@ 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 */