From 6c368f7baaea63c1c7c28c6df271511f2a1562c9 Mon Sep 17 00:00:00 2001 From: Linkai Gong Date: Fri, 21 Aug 2026 17:09:08 +0800 Subject: [PATCH] RDMA/bnxt_re: check create_singlethread_workqueue() in DCB setup bnxt_re_init_dcb_wq() ignores a failed allocation. The async DCB handler later calls queue_work() on the NULL pointer. Fixes: 51dc5312dcd9 ("RDMA/bnxt_re: Add support to handle DCB_CONFIG_CHANGE event") Signed-off-by: Linkai Gong Signed-off-by: Leon Romanovsky --- drivers/infiniband/hw/bnxt_re/main.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/drivers/infiniband/hw/bnxt_re/main.c b/drivers/infiniband/hw/bnxt_re/main.c index ce72db1b4bc3..17654a9e23fe 100644 --- a/drivers/infiniband/hw/bnxt_re/main.c +++ b/drivers/infiniband/hw/bnxt_re/main.c @@ -356,9 +356,13 @@ static int bnxt_re_update_qp1_tos_dscp(struct bnxt_re_dev *rdev) return bnxt_qplib_modify_qp(&rdev->qplib_res, &qp->qplib_qp); } -static void bnxt_re_init_dcb_wq(struct bnxt_re_dev *rdev) +static int bnxt_re_init_dcb_wq(struct bnxt_re_dev *rdev) { rdev->dcb_wq = create_singlethread_workqueue("bnxt_re_dcb_wq"); + if (!rdev->dcb_wq) + return -ENOMEM; + + return 0; } static void bnxt_re_uninit_dcb_wq(struct bnxt_re_dev *rdev) @@ -2339,7 +2343,9 @@ static int bnxt_re_dev_init(struct bnxt_re_dev *rdev, u8 op_type) } bnxt_re_debugfs_add_pdev(rdev); - bnxt_re_init_dcb_wq(rdev); + rc = bnxt_re_init_dcb_wq(rdev); + if (rc) + goto fail; bnxt_re_net_register_async_event(rdev); if (!rdev->is_virtfn)