From: Jakub Kicinski kuba@kernel.org
stable inclusion from stable-v5.10.121 commit deb16df5254d028fb3da6eb83e2210612f11adab category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I5L6CQ
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
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[ Upstream commit fe5c5fc145edcf98a759b895f52b646730eeb7be ]
GCC 12 points out that struct tc_action is smaller than struct tcf_action:
drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c: In function ‘stmmac_test_rxp’: drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c:1132:21: warning: array subscript ‘struct tcf_gact[0]’ is partly outside array bounds of ‘unsigned char[272]’ [-Warray-bounds] 1132 | gact->tcf_action = TC_ACT_SHOT; | ^~
Fixes: ccfc639a94f2 ("net: stmmac: selftests: Add a selftest for Flexible RX Parser") Link: https://lore.kernel.org/r/20220519004305.2109708-1-kuba@kernel.org Signed-off-by: Jakub Kicinski kuba@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Zheng Zengkai zhengzengkai@huawei.com Acked-by: Xie XiuQi xiexiuqi@huawei.com --- .../net/ethernet/stmicro/stmmac/stmmac_selftests.c | 13 ++++++------- 1 file changed, 6 insertions(+), 7 deletions(-)
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c index e649a3e6a529..dd5c4ef92ef3 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c @@ -1084,8 +1084,9 @@ static int stmmac_test_rxp(struct stmmac_priv *priv) unsigned char addr[ETH_ALEN] = {0xde, 0xad, 0xbe, 0xef, 0x00, 0x00}; struct tc_cls_u32_offload cls_u32 = { }; struct stmmac_packet_attrs attr = { }; - struct tc_action **actions, *act; + struct tc_action **actions; struct tc_u32_sel *sel; + struct tcf_gact *gact; struct tcf_exts *exts; int ret, i, nk = 1;
@@ -1110,8 +1111,8 @@ static int stmmac_test_rxp(struct stmmac_priv *priv) goto cleanup_exts; }
- act = kcalloc(nk, sizeof(*act), GFP_KERNEL); - if (!act) { + gact = kcalloc(nk, sizeof(*gact), GFP_KERNEL); + if (!gact) { ret = -ENOMEM; goto cleanup_actions; } @@ -1126,9 +1127,7 @@ static int stmmac_test_rxp(struct stmmac_priv *priv) exts->nr_actions = nk; exts->actions = actions; for (i = 0; i < nk; i++) { - struct tcf_gact *gact = to_gact(&act[i]); - - actions[i] = &act[i]; + actions[i] = (struct tc_action *)&gact[i]; gact->tcf_action = TC_ACT_SHOT; }
@@ -1152,7 +1151,7 @@ static int stmmac_test_rxp(struct stmmac_priv *priv) stmmac_tc_setup_cls_u32(priv, priv, &cls_u32);
cleanup_act: - kfree(act); + kfree(gact); cleanup_actions: kfree(actions); cleanup_exts: