From ceabee6c59943bdd5e1da1a6a20dc7ee5f8113a2 Mon Sep 17 00:00:00 2001 From: YueHaibing Date: Thu, 21 Mar 2019 15:02:50 +0800 Subject: genetlink: Fix a memory leak on error path In genl_register_family(), when idr_alloc() fails, we forget to free the memory we possibly allocate for family->attrbuf. Reported-by: Hulk Robot Fixes: 2ae0f17df1cd ("genetlink: use idr to track families") Signed-off-by: YueHaibing Reviewed-by: Kirill Tkhai Signed-off-by: David S. Miller --- net/netlink/genetlink.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'net/netlink') diff --git a/net/netlink/genetlink.c b/net/netlink/genetlink.c index 25eeb6d2a75a..f0ec068e1d02 100644 --- a/net/netlink/genetlink.c +++ b/net/netlink/genetlink.c @@ -366,7 +366,7 @@ int genl_register_family(struct genl_family *family) 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); @@ -385,6 +385,7 @@ int genl_register_family(struct genl_family *family) errout_remove: idr_remove(&genl_fam_idr, family->id); +errout_free: kfree(family->attrbuf); errout_locked: genl_unlock_all(); -- cgit v1.2.3