From: Junxian Huang Date: Thu, 3 Jul 2025 11:39:03 +0000 (+0800) Subject: RDMA/hns: Fix accessing uninitialized resources X-Git-Tag: v6.16.1~254 X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=9c4f20b7ac700e4b4377f85e36165a4f6ca85995;p=thirdparty%2Fkernel%2Fstable.git RDMA/hns: Fix accessing uninitialized resources [ Upstream commit 278c18a4a78a9a6bf529ef45ccde512a5686ea9d ] hr_dev->pgdir_list and hr_dev->pgdir_mutex won't be initialized if CQ/QP record db are not enabled, but they are also needed when using SRQ with SRQ record db enabled. Simplified the logic by always initailizing the reosurces. Fixes: c9813b0b9992 ("RDMA/hns: Support SRQ record doorbell") Signed-off-by: Junxian Huang Link: https://patch.msgid.link/20250703113905.3597124-5-huangjunxian6@hisilicon.com Signed-off-by: Leon Romanovsky Signed-off-by: Sasha Levin --- diff --git a/drivers/infiniband/hw/hns/hns_roce_main.c b/drivers/infiniband/hw/hns/hns_roce_main.c index 623610b3e2ec1..11fa64044a8d8 100644 --- a/drivers/infiniband/hw/hns/hns_roce_main.c +++ b/drivers/infiniband/hw/hns/hns_roce_main.c @@ -947,10 +947,7 @@ err_unmap_dmpt: static void hns_roce_teardown_hca(struct hns_roce_dev *hr_dev) { hns_roce_cleanup_bitmap(hr_dev); - - if (hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_CQ_RECORD_DB || - hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_QP_RECORD_DB) - mutex_destroy(&hr_dev->pgdir_mutex); + mutex_destroy(&hr_dev->pgdir_mutex); } /** @@ -968,11 +965,8 @@ static int hns_roce_setup_hca(struct hns_roce_dev *hr_dev) INIT_LIST_HEAD(&hr_dev->qp_list); spin_lock_init(&hr_dev->qp_list_lock); - if (hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_CQ_RECORD_DB || - hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_QP_RECORD_DB) { - INIT_LIST_HEAD(&hr_dev->pgdir_list); - mutex_init(&hr_dev->pgdir_mutex); - } + INIT_LIST_HEAD(&hr_dev->pgdir_list); + mutex_init(&hr_dev->pgdir_mutex); hns_roce_init_uar_table(hr_dev); @@ -1004,9 +998,7 @@ static int hns_roce_setup_hca(struct hns_roce_dev *hr_dev) err_uar_table_free: ida_destroy(&hr_dev->uar_ida.ida); - if (hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_CQ_RECORD_DB || - hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_QP_RECORD_DB) - mutex_destroy(&hr_dev->pgdir_mutex); + mutex_destroy(&hr_dev->pgdir_mutex); return ret; }