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IB/core: Fix deadlock on uverbs modify_qp error flow
authorMoshe Lazer <moshel@mellanox.com>
Thu, 5 Feb 2015 11:53:52 +0000 (13:53 +0200)
committerRoland Dreier <roland@purestorage.com>
Wed, 18 Feb 2015 06:06:42 +0000 (22:06 -0800)
commit0fb8bcf022f19a375d7c4bd79ac513da8ae6d78b
tree93ae49f2d4030a880055fd2392119fec22068dfbtree | snapshot
parentc2be9dc0e0fa59cc43c2c7084fc42b430809a0fecommit | diff
IB/core: Fix deadlock on uverbs modify_qp error flow

The deadlock occurs in __uverbs_modify_qp: we take a lock (idr_read_qp)
and in case of failure in ib_resolve_eth_l2_attrs we don't release
it (put_qp_read).  Fix that.

Fixes: ed4c54e5b4ba ("IB/core: Resolve Ethernet L2 addresses when modifying QP")
Signed-off-by: Moshe Lazer <moshel@mellanox.com>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
drivers/infiniband/core/uverbs_cmd.c diff | blob | history
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