From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Colin Ian King <colin.king@canonical.com>,
Saurav Kashyap <skashyap@marvell.com>,
"Martin K . Petersen" <martin.petersen@oracle.com>,
Sasha Levin <sashal@kernel.org>,
linux-scsi@vger.kernel.org
Subject: [PATCH AUTOSEL 4.14 18/24] scsi: bnx2fc: fix incorrect cast to u64 on shift operation
Date: Tue, 4 Jun 2019 19:24:09 -0400 [thread overview]
Message-ID: <20190604232416.7479-18-sashal@kernel.org> (raw)
In-Reply-To: <20190604232416.7479-1-sashal@kernel.org>
From: Colin Ian King <colin.king@canonical.com>
[ Upstream commit d0c0d902339249c75da85fd9257a86cbb98dfaa5 ]
Currently an int is being shifted and the result is being cast to a u64
which leads to undefined behaviour if the shift is more than 31 bits. Fix
this by casting the integer value 1 to u64 before the shift operation.
Addresses-Coverity: ("Bad shift operation")
Fixes: 7b594769120b ("[SCSI] bnx2fc: Handle REC_TOV error code from firmware")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Saurav Kashyap <skashyap@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/scsi/bnx2fc/bnx2fc_hwi.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/scsi/bnx2fc/bnx2fc_hwi.c b/drivers/scsi/bnx2fc/bnx2fc_hwi.c
index 26de61d65a4d..1bdff75ae903 100644
--- a/drivers/scsi/bnx2fc/bnx2fc_hwi.c
+++ b/drivers/scsi/bnx2fc/bnx2fc_hwi.c
@@ -830,7 +830,7 @@ static void bnx2fc_process_unsol_compl(struct bnx2fc_rport *tgt, u16 wqe)
((u64)err_entry->data.err_warn_bitmap_hi << 32) |
(u64)err_entry->data.err_warn_bitmap_lo;
for (i = 0; i < BNX2FC_NUM_ERR_BITS; i++) {
- if (err_warn_bit_map & (u64) (1 << i)) {
+ if (err_warn_bit_map & ((u64)1 << i)) {
err_warn = i;
break;
}
--
2.20.1
prev parent reply other threads:[~2019-06-04 23:24 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20190604232416.7479-1-sashal@kernel.org>
2019-06-04 23:24 ` [PATCH AUTOSEL 4.14 11/24] scsi: qedi: remove memset/memcpy to nfunc and use func instead Sasha Levin
2019-06-04 23:24 ` [PATCH AUTOSEL 4.14 12/24] scsi: qedi: remove set but not used variables 'cdev' and 'udev' Sasha Levin
2019-06-04 23:24 ` [PATCH AUTOSEL 4.14 13/24] scsi: lpfc: add check for loss of ndlp when sending RRQ Sasha Levin
2019-06-04 23:24 ` Sasha Levin [this message]
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