From: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Date: Mon, 18 Sep 2017 12:28:48 +0100
Subject: IB/mlx5: fix debugfs cleanup
Patch-mainline: v4.14-rc2
Git-commit: cbafad87e1507044c7d442087d41d5e3d432cc4e
References: bsc#1046305 FATE#322943
If delay_drop_debugfs_init() fails in any of the operations to create
debugfs, it is calling delay_drop_debugfs_cleanup() as part of its
cleanup. But delay_drop_debugfs_cleanup() checks for 'dbg' and since
we have not yet pointed 'dbg' to the debugfs we need to cleanup, the
cleanup fails and we are left with stray debugfs elements and also a
memory leak.
Fixes: 4a5fd5d2965c ("IB/mlx5: Add necessary delay drop assignment")
Signed-off-by: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Acked-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
drivers/infiniband/hw/mlx5/main.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c
index ab3c562d5ba7..05fb4bdff6a0 100644
--- a/drivers/infiniband/hw/mlx5/main.c
+++ b/drivers/infiniband/hw/mlx5/main.c
@@ -3837,11 +3837,13 @@ static int delay_drop_debugfs_init(struct mlx5_ib_dev *dev)
if (!dbg)
return -ENOMEM;
+ dev->delay_drop.dbg = dbg;
+
dbg->dir_debugfs =
debugfs_create_dir("delay_drop",
dev->mdev->priv.dbg_root);
if (!dbg->dir_debugfs)
- return -ENOMEM;
+ goto out_debugfs;
dbg->events_cnt_debugfs =
debugfs_create_atomic_t("num_timeout_events", 0400,
@@ -3865,8 +3867,6 @@ static int delay_drop_debugfs_init(struct mlx5_ib_dev *dev)
if (!dbg->timeout_debugfs)
goto out_debugfs;
- dev->delay_drop.dbg = dbg;
-
return 0;
out_debugfs:
--
2.12.3