[PATCH 4.4 020/124] RDMA/mad: Convert BUG_ONs to error flows

From: Greg Kroah-Hartman
Date: Sat Aug 04 2018 - 05:07:22 EST


4.4-stable review patch. If anyone has any objections, please let me know.

------------------

From: Leon Romanovsky <leonro@xxxxxxxxxxxx>

[ Upstream commit 2468b82d69e3a53d024f28d79ba0fdb8bf43dfbf ]

Let's perform checks in-place instead of BUG_ONs.

Signed-off-by: Leon Romanovsky <leonro@xxxxxxxxxxxx>
Signed-off-by: Doug Ledford <dledford@xxxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/infiniband/core/mad.c | 11 +++++++----
1 file changed, 7 insertions(+), 4 deletions(-)

--- a/drivers/infiniband/core/mad.c
+++ b/drivers/infiniband/core/mad.c
@@ -1548,7 +1548,8 @@ static int add_oui_reg_req(struct ib_mad
mad_reg_req->oui, 3)) {
method = &(*vendor_table)->vendor_class[
vclass]->method_table[i];
- BUG_ON(!*method);
+ if (!*method)
+ goto error3;
goto check_in_use;
}
}
@@ -1558,10 +1559,12 @@ static int add_oui_reg_req(struct ib_mad
vclass]->oui[i])) {
method = &(*vendor_table)->vendor_class[
vclass]->method_table[i];
- BUG_ON(*method);
/* Allocate method table for this OUI */
- if ((ret = allocate_method_table(method)))
- goto error3;
+ if (!*method) {
+ ret = allocate_method_table(method);
+ if (ret)
+ goto error3;
+ }
memcpy((*vendor_table)->vendor_class[vclass]->oui[i],
mad_reg_req->oui, 3);
goto check_in_use;