Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [ 38/59] ifb: fix oops when loading the ifb failed | Date | Fri, 26 Jul 2013 13:53:02 -0700 |
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3.4-stable review patch. If anyone has any objections, please let me know.
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From: dingtianhong <dingtianhong@huawei.com>
[ Upstream commit f2966cd5691058b8674a20766525bedeaea9cbcf ]
If __rtnl_link_register() return faild when loading the ifb, it will take the wrong path and get oops, so fix it just like dummy.
Signed-off-by: Ding Tianhong <dingtianhong@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- drivers/net/ifb.c | 4 ++++ 1 file changed, 4 insertions(+)
--- a/drivers/net/ifb.c +++ b/drivers/net/ifb.c @@ -290,6 +290,8 @@ static int __init ifb_init_module(void) rtnl_lock(); err = __rtnl_link_register(&ifb_link_ops); + if (err < 0) + goto out; for (i = 0; i < numifbs && !err; i++) { err = ifb_init_one(i); @@ -297,6 +299,8 @@ static int __init ifb_init_module(void) } if (err) __rtnl_link_unregister(&ifb_link_ops); + +out: rtnl_unlock(); return err;
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