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cifs: handle empty list of targets in cifs_reconnect()
In case there were no cached DFS referrals in reconn_setup_dfs_targets(), set cifs_sb to NULL prior to calling reconn_set_next_dfs_target() so it would not try to access an empty tgt_list. Signed-off-by: Paulo Alcantara (SUSE) <pc@cjr.nz> Reviewed-by: Aurelien Aptel <aaptel@suse.com> Signed-off-by: Steve French <stfrench@microsoft.com>
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1 changed files with 6 additions and 4 deletions
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@ -470,11 +470,13 @@ cifs_reconnect(struct TCP_Server_Info *server)
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sb = NULL;
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} else {
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cifs_sb = CIFS_SB(sb);
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rc = reconn_setup_dfs_targets(cifs_sb, &tgt_list);
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if (rc && (rc != -EOPNOTSUPP)) {
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cifs_server_dbg(VFS, "%s: no target servers for DFS failover\n",
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__func__);
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if (rc) {
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cifs_sb = NULL;
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if (rc != -EOPNOTSUPP) {
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cifs_server_dbg(VFS, "%s: no target servers for DFS failover\n",
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__func__);
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}
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} else {
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server->nr_targets = dfs_cache_get_nr_tgts(&tgt_list);
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}
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