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Date: Sat, 23 Nov 2013 13:01:50 +0100 From: Geert Uytterhoeven <geert@...ux-m68k.org> To: "David S. Miller" <davem@...emloft.net>, Johannes Berg <johannes.berg@...el.com> Cc: netdev@...r.kernel.org, linux-kernel@...r.kernel.org, Geert Uytterhoeven <geert@...ux-m68k.org> Subject: [PATCH] genetlink: Fix uninitialized variable in genl_validate_assign_mc_groups() net/netlink/genetlink.c: In function ‘genl_validate_assign_mc_groups’: net/netlink/genetlink.c:217: warning: ‘err’ may be used uninitialized in this function Commit 2a94fe48f32ccf7321450a2cc07f2b724a444e5b ("genetlink: make multicast groups const, prevent abuse") split genl_register_mc_group() in multiple functions, but dropped the initialization of err. Initialize err to zero to fix this. Signed-off-by: Geert Uytterhoeven <geert@...ux-m68k.org> --- Question: Is the for_each_net_rcu() loop in genl_validate_assign_mc_groups() guaranteed to loop at least once? If yes, this is a false positive. net/netlink/genetlink.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/netlink/genetlink.c b/net/netlink/genetlink.c index 4518a57aa5fe..803206e82450 100644 --- a/net/netlink/genetlink.c +++ b/net/netlink/genetlink.c @@ -214,7 +214,7 @@ static int genl_validate_assign_mc_groups(struct genl_family *family) { int first_id; int n_groups = family->n_mcgrps; - int err, i; + int err = 0, i; bool groups_allocated = false; if (!n_groups) -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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