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net/mlx5: fix indexed pool local cache crash

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Local cache for an indexed pool is not initialized in the situation when
all the indices are allocated on one CPU core and freed on another one.
That leads to a crash once we try to check its reference counter.
Check that the local cache is initialized before accessing this counter.

Fixes: d15c0946be ("net/mlx5: add indexed pool local cache")
Cc: stable@dpdk.org

Signed-off-by: Alexander Kozyrev <akozyrev@nvidia.com>
Acked-by: Viacheslav Ovsiienko <viacheslavo@nvidia.com>
This commit is contained in:
Alexander Kozyrev 2022-11-09 14:58:19 +02:00 committed by Raslan Darawsheh
parent 73be9af44e
commit 7869d60380
1 changed files with 1 additions and 1 deletions
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2
drivers/net/mlx5/mlx5_utils.c
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@ -479,7 +479,7 @@ _mlx5_ipool_free_cache(struct mlx5_indexed_pool *pool, int cidx, uint32_t idx)
mlx5_ipool_lock(pool);
gc = pool->gc;
if (ilc->lc != gc) {
if (!(--ilc->lc->ref_cnt))
if (ilc->lc && !(--ilc->lc->ref_cnt))
olc = ilc->lc;
gc->ref_cnt++;
ilc->lc = gc;