Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-23 04:31:50 +00:00
Code Issues Packages Projects Releases Wiki Activity

[IPX]: Fix NULL pointer dereference on ipx unload

Browse Source 
Fixes a null pointer dereference when unloading the ipx module.

On initialization of the ipx module, registering certain packet
types can fail. When this happens, unloading the module later
dereferences NULL pointers.  This patch fixes that. Please apply.

Signed-off-by: Jiri Bohac <jbohac@suse.cz>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jiri Bohac 2007-02-08 16:02:21 -08:00 committed by David S. Miller
parent 42c05f6e6e
commit 1539b98b56
1 changed files with 16 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

24
net/ipx/af_ipx.c
View File

@ -2035,19 +2035,27 @@ static void __exit ipx_proto_finito(void)
ipxitf_cleanup();
unregister_snap_client(pSNAP_datalink);
pSNAP_datalink = NULL;
if (pSNAP_datalink) {
unregister_snap_client(pSNAP_datalink);
pSNAP_datalink = NULL;
}
unregister_8022_client(p8022_datalink);
p8022_datalink = NULL;
if (p8022_datalink) {
unregister_8022_client(p8022_datalink);
p8022_datalink = NULL;
}
dev_remove_pack(&ipx_8023_packet_type);
destroy_8023_client(p8023_datalink);
p8023_datalink = NULL;
if (p8023_datalink) {
destroy_8023_client(p8023_datalink);
p8023_datalink = NULL;
}
dev_remove_pack(&ipx_dix_packet_type);
destroy_EII_client(pEII_datalink);
pEII_datalink = NULL;
if (pEII_datalink) {
destroy_EII_client(pEII_datalink);
pEII_datalink = NULL;
}
proto_unregister(&ipx_proto);
sock_unregister(ipx_family_ops.family);