Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-11 22:51:42 +00:00
Code Issues Packages Projects Releases Wiki Activity

vti6: Don't unregister pernet ops twice on init errors

Browse Source 
If we fail to register one of the xfrm protocol handlers we will
unregister the pernet ops twice on the error exit path. This will
probably lead to a kernel panic as the double deregistration
leads to a double kfree().

Fix this by removing one of the calls to do it only once.

Fixes: fa9ad96d49 ("vti6: Update the ipv6 side to use its own...")
Signed-off-by: Mathias Krause <minipli@googlemail.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
This commit is contained in:
Mathias Krause 2014-05-09 23:43:40 +02:00 committed by Steffen Klassert
parent edb666f07e
commit fd71143645
1 changed files with 0 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
net/ipv6/ip6_vti.c
View File

@ -1097,7 +1097,6 @@ static int __init vti6_tunnel_init(void)
err = xfrm6_protocol_register(&vti_esp6_protocol, IPPROTO_ESP);
if (err < 0) {
unregister_pernet_device(&vti6_net_ops);
pr_err("%s: can't register vti6 protocol\n", __func__);
goto out;
@ -1106,7 +1105,6 @@ static int __init vti6_tunnel_init(void)
err = xfrm6_protocol_register(&vti_ah6_protocol, IPPROTO_AH);
if (err < 0) {
xfrm6_protocol_deregister(&vti_esp6_protocol, IPPROTO_ESP);
unregister_pernet_device(&vti6_net_ops);
pr_err("%s: can't register vti6 protocol\n", __func__);
goto out;
@ -1116,7 +1114,6 @@ static int __init vti6_tunnel_init(void)
if (err < 0) {
xfrm6_protocol_deregister(&vti_ah6_protocol, IPPROTO_AH);
xfrm6_protocol_deregister(&vti_esp6_protocol, IPPROTO_ESP);
unregister_pernet_device(&vti6_net_ops);
pr_err("%s: can't register vti6 protocol\n", __func__);
goto out;