[PATCH] IB/mlx4: Fix an error handling path in 'mlx4_ib_rereg_user_mr()'
From: Christophe JAILLET
Date: Mon Jun 11 2018 - 14:22:54 EST
Before returning -EPERM we should release some resources, as already done
in the other error handling path of the function.
Fixes: d8f9cc328c88 ("IB/mlx4: Mark user MR as writable if actual virtual memory is writable")
Signed-off-by: Christophe JAILLET <christophe.jaillet@xxxxxxxxxx>
---
drivers/infiniband/hw/mlx4/mr.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/infiniband/hw/mlx4/mr.c b/drivers/infiniband/hw/mlx4/mr.c
index ed1f253faf97..c7c85c22e4e3 100644
--- a/drivers/infiniband/hw/mlx4/mr.c
+++ b/drivers/infiniband/hw/mlx4/mr.c
@@ -486,8 +486,11 @@ int mlx4_ib_rereg_user_mr(struct ib_mr *mr, int flags,
}
if (flags & IB_MR_REREG_ACCESS) {
- if (ib_access_writable(mr_access_flags) && !mmr->umem->writable)
- return -EPERM;
+ if (ib_access_writable(mr_access_flags) &&
+ !mmr->umem->writable) {
+ err = -EPERM;
+ goto release_mpt_entry;
+ }
err = mlx4_mr_hw_change_access(dev->dev, *pmpt_entry,
convert_access(mr_access_flags));
--
2.17.0