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dyndbg: fix old BUG_ON in >control parser

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commit 00e7d3bea2ce7dac7bee1cf501fb071fd0ea8f6c upstream.

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 <[email protected]>
Signed-off-by: Jim Cromie <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
This commit is contained in:
Jim Cromie 2024-04-29 13:31:11 -06:00 • committed by Greg Kroah-Hartman
commit 343081c21e
1 changed files with 5 additions and 1 deletions
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6
lib/dynamic_debug.c
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@ -244,7 +244,11 @@ 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 */