From: Jason Gunthorpe <jgg@xxxxxxxxxxxx>
Under one path through ib_nl_fetch_ha() this calls nlmsg_new(GFP_KERNEL)
which is a sleeping call. This is a very rare path, so mark fetch_ha() and
the module external entry point that conditionally calls through to
fetch_ha() as might_sleep().
Signed-off-by: Jason Gunthorpe <jgg@xxxxxxxxxxxx>
Signed-off-by: Leon Romanovsky <leonro@xxxxxxxxxxxx>
---
drivers/infiniband/core/addr.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/infiniband/core/addr.c b/drivers/infiniband/core/addr.c
index 1753a9801b70..3a98439bba83 100644
--- a/drivers/infiniband/core/addr.c
+++ b/drivers/infiniband/core/addr.c
@@ -371,6 +371,8 @@ static int fetch_ha(const struct dst_entry *dst, struct rdma_dev_addr *dev_addr,
(const void *)&dst_in6->sin6_addr;
sa_family_t family = dst_in->sa_family;
+ might_sleep();
+
/* If we have a gateway in IB mode then it must be an IB network */
if (has_gateway(dst, family) && dev_addr->network == RDMA_NETWORK_IB)
return ib_nl_fetch_ha(dev_addr, daddr, seq, family);
@@ -727,6 +729,8 @@ int roce_resolve_route_from_path(struct sa_path_rec *rec,
struct rdma_dev_addr dev_addr = {};
int ret;
+ might_sleep();
+
if (rec->roce.route_resolved)
return 0;
--
2.26.2
