From: Pedro Tammela <pctammela@mojatatu.com>
Date: Fri, 24 Feb 2023 17:57:56 +0000 (-0300)
Subject: tc: m_action: fix parsing of TCA_EXT_WARN_MSG
X-Git-Tag: v6.3.0~30
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=70b9ebae63ce7e6f9911bdfbcf47a6d18f24159a;p=thirdparty%2Fiproute2.git

tc: m_action: fix parsing of TCA_EXT_WARN_MSG

It should sit within the TCA_ACT_TAB hierarchy, otherwise the access to
tb is out of bounds:
./tc action ls action csum
total acts 1

        action order 0: csum (?empty) action pass
        index 1 ref 1 bind 0
        not_in_hw
Segmentation fault (core dumped)

Fixes: 60359956 ("tc: add new attr TCA_EXT_WARN_MSG")
Reviewed-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: Pedro Tammela <pctammela@mojatatu.com>
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
---

diff --git a/tc/m_action.c b/tc/m_action.c
index 0400132ce..6c91af2ce 100644
--- a/tc/m_action.c
+++ b/tc/m_action.c
@@ -586,7 +586,7 @@ int print_action(struct nlmsghdr *n, void *arg)
 
 	open_json_object(NULL);
 	tc_dump_action(fp, tb[TCA_ACT_TAB], tot_acts ? *tot_acts:0, false);
-	print_ext_msg(tb);
+	print_ext_msg(&tb[TCA_ACT_TAB]);
 	close_json_object();
 
 	return 0;