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afs: Fix afs_server_list to be cleaned up with RCU
[ Upstream commite6bace7313
] afs_server_list is accessed with the rcu_read_lock() held from volume->servers, so it needs to be cleaned up correctly. Fix this by using kfree_rcu() instead of kfree(). Fixes:8a070a9648
("afs: Detect cell aliases 1 - Cells with root volumes") Signed-off-by: David Howells <dhowells@redhat.com> cc: Marc Dionne <marc.dionne@auristor.com> cc: linux-afs@lists.infradead.org Signed-off-by: Sasha Levin <sashal@kernel.org>
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2 changed files with 2 additions and 1 deletions
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@ -552,6 +552,7 @@ struct afs_server_entry {
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};
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struct afs_server_list {
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struct rcu_head rcu;
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afs_volid_t vids[AFS_MAXTYPES]; /* Volume IDs */
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refcount_t usage;
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unsigned char nr_servers;
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@ -17,7 +17,7 @@ void afs_put_serverlist(struct afs_net *net, struct afs_server_list *slist)
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for (i = 0; i < slist->nr_servers; i++)
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afs_unuse_server(net, slist->servers[i].server,
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afs_server_trace_put_slist);
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kfree(slist);
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kfree_rcu(slist, rcu);
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}
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}
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