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RDMA/addr: Mark addr_resolve as might_sleep()

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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().

Link: https://lore.kernel.org/r/20200506074701.9775-2-leon@kernel.org
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Jason Gunthorpe 2020-05-06 10:46:52 +03:00
parent 90ae0b57e4
commit f8f2a576cb
1 changed files with 4 additions and 0 deletions
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4
drivers/infiniband/core/addr.c
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@ -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;