From: Alexander Lobakin <alobakin@marvell.com>
Date: Tue, 23 Jun 2020 16:51:30 +0300
Subject: net: qed: fix async event callbacks unregistering
Patch-mainline: v5.8-rc3
Git-commit: 31333c1a2521ff4b4ceb0c29de492549cd4a8de3
References: git-fixes
qed_spq_unregister_async_cb() should be called before
qed_rdma_info_free() to avoid crash-spawning uses-after-free.
Instead of calling it from each subsystem exit code, do it in one place
on PF down.
Fixes: 291d57f67d24 ("qed: Fix rdma_info structure allocation")
Signed-off-by: Alexander Lobakin <alobakin@marvell.com>
Signed-off-by: Igor Russkikh <irusskikh@marvell.com>
Signed-off-by: Michal Kalderon <michal.kalderon@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
drivers/net/ethernet/qlogic/qed/qed_dev.c | 9 +++++++--
drivers/net/ethernet/qlogic/qed/qed_iwarp.c | 2 --
drivers/net/ethernet/qlogic/qed/qed_roce.c | 1 -
3 files changed, 7 insertions(+), 5 deletions(-)
--- a/drivers/net/ethernet/qlogic/qed/qed_dev.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_dev.c
@@ -1368,6 +1368,8 @@ static void qed_dbg_user_data_free(struc
void qed_resc_free(struct qed_dev *cdev)
{
+ struct qed_rdma_info *rdma_info;
+ struct qed_hwfn *p_hwfn;
int i;
if (IS_VF(cdev)) {
@@ -1385,7 +1387,8 @@ void qed_resc_free(struct qed_dev *cdev)
qed_llh_free(cdev);
for_each_hwfn(cdev, i) {
- struct qed_hwfn *p_hwfn = &cdev->hwfns[i];
+ p_hwfn = cdev->hwfns + i;
+ rdma_info = p_hwfn->p_rdma_info;
qed_cxt_mngr_free(p_hwfn);
qed_qm_info_free(p_hwfn);
@@ -1404,8 +1407,10 @@ void qed_resc_free(struct qed_dev *cdev)
qed_ooo_free(p_hwfn);
}
- if (QED_IS_RDMA_PERSONALITY(p_hwfn))
+ if (QED_IS_RDMA_PERSONALITY(p_hwfn) && rdma_info) {
+ qed_spq_unregister_async_cb(p_hwfn, rdma_info->proto);
qed_rdma_info_free(p_hwfn);
+ }
qed_iov_free(p_hwfn);
qed_l2_free(p_hwfn);
--- a/drivers/net/ethernet/qlogic/qed/qed_iwarp.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_iwarp.c
@@ -2832,8 +2832,6 @@ int qed_iwarp_stop(struct qed_hwfn *p_hw
if (rc)
return rc;
- qed_spq_unregister_async_cb(p_hwfn, PROTOCOLID_IWARP);
-
return qed_iwarp_ll2_stop(p_hwfn);
}
--- a/drivers/net/ethernet/qlogic/qed/qed_roce.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_roce.c
@@ -113,7 +113,6 @@ void qed_roce_stop(struct qed_hwfn *p_hw
break;
}
}
- qed_spq_unregister_async_cb(p_hwfn, PROTOCOLID_ROCE);
}
static void qed_rdma_copy_gids(struct qed_rdma_qp *qp, __le32 *src_gid,