This is a note to let you know that I've just added the patch titled
scsi: csiostor: Uninitialized data in csio_ln_vnp_read_cbfn()
to the 4.19-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
scsi-csiostor-uninitialized-data-in-csio_ln_vnp_read.patch
and it can be found in the queue-4.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 8d6d48ca2120c9770b9f3d1c6bb11a12b763c7dd
Author: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Date: Wed Oct 6 10:32:43 2021 +0300
scsi: csiostor: Uninitialized data in csio_ln_vnp_read_cbfn()
[ Upstream commit f4875d509a0a78ad294a1a538d534b5ba94e685a ]
This variable is just a temporary variable, used to do an endian
conversion. The problem is that the last byte is not initialized. After
the conversion is completely done, the last byte is discarded so it doesn't
cause a problem. But static checkers and the KMSan runtime checker can
detect the uninitialized read and will complain about it.
Link: https://lore.kernel.org/r/20211006073242.GA8404@kili
Fixes: 5036f0a0ecd3 ("[SCSI] csiostor: Fix sparse warnings.")
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Signed-off-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/scsi/csiostor/csio_lnode.c b/drivers/scsi/csiostor/csio_lnode.c
index a8e29e3d35726..98944fb3f0b85 100644
--- a/drivers/scsi/csiostor/csio_lnode.c
+++ b/drivers/scsi/csiostor/csio_lnode.c
@@ -619,7 +619,7 @@ csio_ln_vnp_read_cbfn(struct csio_hw *hw, struct csio_mb *mbp)
struct fc_els_csp *csp;
struct fc_els_cssp *clsp;
enum fw_retval retval;
- __be32 nport_id;
+ __be32 nport_id = 0;
retval = FW_CMD_RETVAL_G(ntohl(rsp->alloc_to_len16));
if (retval != FW_SUCCESS) {
