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Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , David Wei , netdev@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Joe Damato Subject: [PATCH net v2] bnxt: fix memory leak in bnxt_queue_mem_alloc error cases Date: Wed, 29 Jul 2026 15:01:31 -0700 Message-ID: <20260729220132.1256924-1-will.chen.tty@gmail.com> X-Mailer: git-send-email 2.53.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit There is a small memory leak in bnxt_queue_mem_alloc: when bnxt_alloc_rx_agg_bmap() succeeds but bnxt_alloc_one_tpa_info() later fails, the rx_agg_bmap allocated by bnxt_alloc_rx_agg_bmap() is not freed in the fallthrough cleanup cases. Free the rx_agg_bmap in the err_free_rx_agg_ring case and initialize clone->rx_agg_bmap = NULL earlier in the function to allow for safe fallthrough. Fixes: bd649c5cc958 ("bnxt_en: handle tpa_info in queue API implementation") Signed-off-by: Will Chen Reviewed-by: Joe Damato --- drivers/net/ethernet/broadcom/bnxt/bnxt.c | 3 +++ 1 file changed, 3 insertions(+) v2: - Rearrange the order of the frees as suggested by Michael v1: https://lore.kernel.org/netdev/20260728191146.1744825-1-will.chen.tty@gmail.com/ diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c index 7513618793da..004ef99f4530 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c @@ -16217,6 +16217,7 @@ static int bnxt_queue_mem_alloc(struct net_device *dev, clone->rx_next_cons = 0; clone->need_head_pool = false; clone->rx_page_size = qcfg->rx_page_size; + clone->rx_agg_bmap = NULL; rc = bnxt_alloc_rx_page_pool(bp, clone, rxr->page_pool->p.nid); if (rc) @@ -16269,6 +16270,8 @@ static int bnxt_queue_mem_alloc(struct net_device *dev, bnxt_free_one_tpa_info(bp, clone); err_free_rx_agg_ring: bnxt_free_ring(bp, &clone->rx_agg_ring_struct.ring_mem); + kfree(clone->rx_agg_bmap); + clone->rx_agg_bmap = NULL; err_free_rx_ring: bnxt_free_ring(bp, &clone->rx_ring_struct.ring_mem); err_rxq_info_unreg: base-commit: 3f1f755366687d051174739fb99f7d560202f60b -- 2.53.0-Meta