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authorJason Gunthorpe <jgg@mellanox.com>2019-02-12 21:12:56 -0700
committerJason Gunthorpe <jgg@mellanox.com>2019-02-19 20:52:18 -0700
commitca22354b140853b8155692d5b2bc0110aa54e937 (patch)
tree6265175dff59f674ecd82e69536f4e9a0b89f4a4 /include/rdma/ib_verbs.h
parentRDMA/rxe: Add ib_device_get_by_name() and use it in rxe (diff)
downloadlinux-dev-ca22354b140853b8155692d5b2bc0110aa54e937.tar.xz
linux-dev-ca22354b140853b8155692d5b2bc0110aa54e937.zip
RDMA/rxe: Close a race after ib_register_device
Since rxe allows unregistration from other threads the rxe pointer can become invalid any moment after ib_register_driver returns. This could cause a user triggered use after free. Add another driver callback to be called right after the device becomes registered to complete any device setup required post-registration. This callback has enough core locking to prevent the device from becoming unregistered. Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Diffstat (limited to 'include/rdma/ib_verbs.h')
-rw-r--r--include/rdma/ib_verbs.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index ad83f8c38dc8..640263289ab9 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -2540,6 +2540,11 @@ struct ib_device_ops {
/* Device lifecycle callbacks */
/*
+ * Called after the device becomes registered, before clients are
+ * attached
+ */
+ int (*enable_driver)(struct ib_device *dev);
+ /*
* This is called as part of ib_dealloc_device().
*/
void (*dealloc_driver)(struct ib_device *dev);