Mailing List Archive: [PATCH] scsi: elx: efct: Do not use id uninitialized in efct_lio_setup

[PATCH] scsi: elx: efct: Do not use id uninitialized in efct_lio_setup_session()

Jun 17, 2021, 12:15 AM

Post #1 of 3 (1 views)

clang warns:

drivers/scsi/elx/efct/efct_lio.c:1216:24: warning: variable 'id' is
uninitialized when used here [-Wuninitialized]
se_sess, node, id);
^~

Shuffle the debug print after id's initialization so that the actual
value is printed.

Fixes: 692e5d73a811 ("scsi: elx: efct: LIO backend interface routines")
Link: https://github.com/ClangBuiltLinux/linux/issues/1397
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
---
drivers/scsi/elx/efct/efct_lio.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/scsi/elx/efct/efct_lio.c b/drivers/scsi/elx/efct/efct_lio.c
index e1bab2b17e4d..b7d69ff29c09 100644
--- a/drivers/scsi/elx/efct/efct_lio.c
+++ b/drivers/scsi/elx/efct/efct_lio.c
@@ -1212,12 +1212,12 @@ static void efct_lio_setup_session(struct work_struct *work)
return;
}

- efc_log_debug(efct, "new initiator sess=%p node=%p id: %llx\n",
- se_sess, node, id);
-
tgt_node = node->tgt_node;
id = (u64) tgt_node->port_fc_id << 32 | tgt_node->node_fc_id;

+ efc_log_debug(efct, "new initiator sess=%p node=%p id: %llx\n",
+ se_sess, node, id);
+
if (xa_err(xa_store(&efct->lookup, id, tgt_node, GFP_KERNEL)))
efc_log_err(efct, "Node lookup store failed\n");

base-commit: ebc076b3eddc807729bd81f7bc48e798a3ddc477
--
2.32.0.93.g670b81a890

Re: [PATCH] scsi: elx: efct: Do not use id uninitialized in efct_lio_setup_session() [ In reply to ]

jsmart2021 at gmail

Jun 18, 2021, 4:15 PM

Post #2 of 3 (1 views)

Permalink

On 6/16/2021 11:17 PM, Nathan Chancellor wrote:
> clang warns:
>
> drivers/scsi/elx/efct/efct_lio.c:1216:24: warning: variable 'id' is
> uninitialized when used here [-Wuninitialized]
> se_sess, node, id);
> ^~
>
> Shuffle the debug print after id's initialization so that the actual
> value is printed.
>
> Fixes: 692e5d73a811 ("scsi: elx: efct: LIO backend interface routines")
> Link: https://github.com/ClangBuiltLinux/linux/issues/1397
> Signed-off-by: Nathan Chancellor <nathan@kernel.org>
> ---
> drivers/scsi/elx/efct/efct_lio.c | 6 +++---
> 1 file changed, 3 insertions(+), 3 deletions(-)
>

Thanks

Reviewed-by: James Smart <jsmart2021@gmail.com>

-- james

Re: [PATCH] scsi: elx: efct: Do not use id uninitialized in efct_lio_setup_session() [ In reply to ]

martin.petersen at oracle

Jun 18, 2021, 8:15 PM

Post #3 of 3 (1 views)

Permalink

Nathan,

> clang warns:
>
> drivers/scsi/elx/efct/efct_lio.c:1216:24: warning: variable 'id' is
> uninitialized when used here [-Wuninitialized]
> se_sess, node, id);
> ^~
>
> Shuffle the debug print after id's initialization so that the actual
> value is printed.

Applied to 5.14/scsi-staging, thanks!

--
Martin K. Petersen Oracle Linux Engineering