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Subject[PATCH net-next v2 1/4] net: dql: Avoid calling BUG() when WARN() is enough
Date
If the dql_queued() function receives an invalid argument, WARN about it
and continue, instead of crashing the kernel.

This was raised by checkpatch, when I am refactoring this code (see
following patch/commit)

WARNING: Do not crash the kernel unless it is absolutely unavoidable--use WARN_ON_ONCE() plus recovery code (if feasible) instead of BUG() or variants

Signed-off-by: Breno Leitao <leitao@debian.org>
---
include/linux/dynamic_queue_limits.h | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/include/linux/dynamic_queue_limits.h b/include/linux/dynamic_queue_limits.h
index 5693a4be0d9a..ff9c65841ae8 100644
--- a/include/linux/dynamic_queue_limits.h
+++ b/include/linux/dynamic_queue_limits.h
@@ -91,7 +91,8 @@ static inline void dql_queued(struct dql *dql, unsigned int count)
{
unsigned long map, now, now_hi, i;

- BUG_ON(count > DQL_MAX_OBJECT);
+ if (WARN_ON_ONCE(count > DQL_MAX_OBJECT))
+ return;

dql->last_obj_cnt = count;

--
2.43.0

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