From 00ffc1ba02d876478c125e4305f9a02d40c6d284 Mon Sep 17 00:00:00 2001 From: WANG Cong Date: Thu, 3 Nov 2016 09:42:35 -0700 Subject: genetlink: fix a memory leak on error path In __genl_register_family(), when genl_validate_assign_mc_groups() fails, we forget to free the memory we possibly allocate for family->attrbuf. Note, some callers call genl_unregister_family() to clean up on error path, it doesn't work because the family is inserted to the global list in the nearly last step. Cc: Jakub Kicinski Cc: Johannes Berg Signed-off-by: Cong Wang Signed-off-by: David S. Miller --- net/netlink/genetlink.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'net/netlink') diff --git a/net/netlink/genetlink.c b/net/netlink/genetlink.c index 23cc12639ba7..49c28e8ef01b 100644 --- a/net/netlink/genetlink.c +++ b/net/netlink/genetlink.c @@ -404,7 +404,7 @@ int __genl_register_family(struct genl_family *family) err = genl_validate_assign_mc_groups(family); if (err) - goto errout_locked; + goto errout_free; list_add_tail(&family->family_list, genl_family_chain(family->id)); genl_unlock_all(); @@ -417,6 +417,8 @@ int __genl_register_family(struct genl_family *family) return 0; +errout_free: + kfree(family->attrbuf); errout_locked: genl_unlock_all(); errout: -- cgit v1.2.3