7c1eb45a22
An ib_client callback that is called with the lists_rwsem locked only for read is protected from changes to the IB client lists, but not from ib_unregister_device() freeing its client data. This is because ib_unregister_device() will remove the device from the device list with lists_rwsem locked for write, but perform the rest of the cleanup, including the call to remove() without that lock. Mark client data that is undergoing de-registration with a new going_down flag in the client data context. Lock the client data list with lists_rwsem for write in addition to using the spinlock, so that functions calling the callback would be able to lock only lists_rwsem for read and let callbacks sleep. Since ib_unregister_client() now marks the client data context, no need for remove() to search the context again, so pass the client data directly to remove() callbacks. Reviewed-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> Signed-off-by: Haggai Eran <haggaie@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com> |
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| .. | ||
| ib.h | ||
| ib_addr.h | ||
| ib_cache.h | ||
| ib_cm.h | ||
| ib_fmr_pool.h | ||
| ib_mad.h | ||
| ib_marshall.h | ||
| ib_pack.h | ||
| ib_pma.h | ||
| ib_sa.h | ||
| ib_smi.h | ||
| ib_umem.h | ||
| ib_umem_odp.h | ||
| ib_verbs.h | ||
| iw_cm.h | ||
| iw_portmap.h | ||
| opa_port_info.h | ||
| opa_smi.h | ||
| rdma_cm.h | ||
| rdma_cm_ib.h | ||
| rdma_netlink.h | ||