From: zhangyue <zhangyue1@xxxxxxxxxx> [ Upstream commit 0435a4d08032c8fba2966cebdac870e22238cacc ] If the variable 'p_bit->flags' is always 0, the loop condition is always 0. The variable 'j' may be greater than or equal to 32. At this time, the array 'p_aeu->bits[32]' may be out of bound. Signed-off-by: zhangyue <zhangyue1@xxxxxxxxxx> Link: https://lore.kernel.org/r/20211125113610.273841-1-zhangyue1@xxxxxxxxxx Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- drivers/net/ethernet/qlogic/qed/qed_int.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/net/ethernet/qlogic/qed/qed_int.c b/drivers/net/ethernet/qlogic/qed/qed_int.c index 666e43748a5f4..a68363e1a9030 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_int.c +++ b/drivers/net/ethernet/qlogic/qed/qed_int.c @@ -1027,7 +1027,7 @@ static int qed_int_deassertion(struct qed_hwfn *p_hwfn, if (!parities) continue; - for (j = 0, bit_idx = 0; bit_idx < 32; j++) { + for (j = 0, bit_idx = 0; bit_idx < 32 && j < 32; j++) { struct aeu_invert_reg_bit *p_bit = &p_aeu->bits[j]; if (qed_int_is_parity_flag(p_hwfn, p_bit) && @@ -1065,7 +1065,7 @@ static int qed_int_deassertion(struct qed_hwfn *p_hwfn, * to current group, making them responsible for the * previous assertion. */ - for (j = 0, bit_idx = 0; bit_idx < 32; j++) { + for (j = 0, bit_idx = 0; bit_idx < 32 && j < 32; j++) { long unsigned int bitmask; u8 bit, bit_len; @@ -1365,7 +1365,7 @@ static void qed_int_sb_attn_init(struct qed_hwfn *p_hwfn, memset(sb_info->parity_mask, 0, sizeof(u32) * NUM_ATTN_REGS); for (i = 0; i < NUM_ATTN_REGS; i++) { /* j is array index, k is bit index */ - for (j = 0, k = 0; k < 32; j++) { + for (j = 0, k = 0; k < 32 && j < 32; j++) { struct aeu_invert_reg_bit *p_aeu; p_aeu = &aeu_descs[i].bits[j]; -- 2.33.0
