4.14-stable review patch. If anyone has any objections, please let me know.
------------------
From: YueHaibing <yuehaibing@xxxxxxxxxx>
[ Upstream commit ceabee6c59943bdd5e1da1a6a20dc7ee5f8113a2 ]
In genl_register_family(), when idr_alloc() fails,
we forget to free the memory we possibly allocate for
family->attrbuf.
Reported-by: Hulk Robot <hulkci@xxxxxxxxxx>
Fixes: 2ae0f17df1cd ("genetlink: use idr to track families")
Signed-off-by: YueHaibing <yuehaibing@xxxxxxxxxx>
Reviewed-by: Kirill Tkhai <ktkhai@xxxxxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
net/netlink/genetlink.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/net/netlink/genetlink.c
+++ b/net/netlink/genetlink.c
@@ -365,7 +365,7 @@ int genl_register_family(struct genl_fam
start, end + 1, GFP_KERNEL);
if (family->id < 0) {
err = family->id;
- goto errout_locked;
+ goto errout_free;
}
err = genl_validate_assign_mc_groups(family);
@@ -384,6 +384,7 @@ int genl_register_family(struct genl_fam
errout_remove:
idr_remove(&genl_fam_idr, family->id);
+errout_free:
kfree(family->attrbuf);
errout_locked:
genl_unlock_all();
