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appletalk: Set error code if register_snap_client failed
commitc93ad1337a
upstream. If register_snap_client fails in atalk_init, error code should be set, otherwise it will triggers NULL pointer dereference while unloading module. Fixes:9804501fa1
("appletalk: Fix potential NULL pointer dereference in unregister_snap_client") Signed-off-by: YueHaibing <yuehaibing@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -1927,6 +1927,7 @@ static int __init atalk_init(void)
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ddp_dl = register_snap_client(ddp_snap_id, atalk_rcv);
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if (!ddp_dl) {
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pr_crit("Unable to register DDP with SNAP.\n");
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rc = -ENOMEM;
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goto out_sock;
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}
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