From: Igor Russkikh Igor.Russkikh@aquantia.com
[ Upstream commit 8006e3730b6e900319411e35cee85b4513d298df ]
This is a real stack undercorruption found by kasan build.
The issue did no harm normally because it only overflowed 2 bytes after `bitary` array which on most architectures were mapped into `err` local.
Fixes: bab6de8fd180 ("net: ethernet: aquantia: Atlantic A0 and B0 specific functions.") Signed-off-by: Nikita Danilov nikita.danilov@aquantia.com Signed-off-by: Igor Russkikh igor.russkikh@aquantia.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_a0.c | 4 ++-- drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_b0.c | 4 ++-- 2 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_a0.c b/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_a0.c index 97addfa6f895..dab5891b9714 100644 --- a/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_a0.c +++ b/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_a0.c @@ -207,8 +207,8 @@ static int hw_atl_a0_hw_rss_set(struct aq_hw_s *self, u32 i = 0U; u32 num_rss_queues = max(1U, self->aq_nic_cfg->num_rss_queues); int err = 0; - u16 bitary[(HW_ATL_A0_RSS_REDIRECTION_MAX * - HW_ATL_A0_RSS_REDIRECTION_BITS / 16U)]; + u16 bitary[1 + (HW_ATL_A0_RSS_REDIRECTION_MAX * + HW_ATL_A0_RSS_REDIRECTION_BITS / 16U)];
memset(bitary, 0, sizeof(bitary));
diff --git a/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_b0.c b/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_b0.c index 51cd1f98bcf0..c4f914a29c38 100644 --- a/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_b0.c +++ b/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_b0.c @@ -192,8 +192,8 @@ static int hw_atl_b0_hw_rss_set(struct aq_hw_s *self, u32 i = 0U; u32 num_rss_queues = max(1U, self->aq_nic_cfg->num_rss_queues); int err = 0; - u16 bitary[(HW_ATL_B0_RSS_REDIRECTION_MAX * - HW_ATL_B0_RSS_REDIRECTION_BITS / 16U)]; + u16 bitary[1 + (HW_ATL_B0_RSS_REDIRECTION_MAX * + HW_ATL_B0_RSS_REDIRECTION_BITS / 16U)];
memset(bitary, 0, sizeof(bitary));