From: Justin Tee <justintee8345@gmail.com>
To: linux-scsi@vger.kernel.org
Cc: jsmart2021@gmail.com, justin.tee@broadcom.com,
Justin Tee <justintee8345@gmail.com>,
Dan Carpenter <dan.carpenter@linaro.org>
Subject: [PATCH 3/9] lpfc: Fix list_entry null check warning in lpfc_cmpl_els_plogi
Date: Tue, 31 Oct 2023 12:12:18 -0700 [thread overview]
Message-ID: <20231031191224.150862-4-justintee8345@gmail.com> (raw)
In-Reply-To: <20231031191224.150862-1-justintee8345@gmail.com>
Smatch called out a warning for null checking a ptr that is assigned by
list_entry. list_entry does not return null and, if the list is empty,
can return an invalid ptr. Thus, the !psrp check does not execute
properly.
drivers/scsi/lpfc/lpfc_els.c:2133 lpfc_cmpl_els_plogi()
warn: list_entry() does not return NULL 'prsp'
Replace list_entry with list_get_first, which does a list_empty check
before returning the first entry.
Fixes: a3c3c0a806f1 ("scsi: lpfc: Validate ELS LS_ACC completion payload")
Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Closes: https://lore.kernel.org/linux-scsi/01b7568f-4ab4-4d56-bfa6-9ecc5fc261fe@moroto.mountain/
Signed-off-by: Justin Tee <justin.tee@broadcom.com>
---
drivers/scsi/lpfc/lpfc_els.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/scsi/lpfc/lpfc_els.c b/drivers/scsi/lpfc/lpfc_els.c
index f9627eddab08..0829fe6ddff8 100644
--- a/drivers/scsi/lpfc/lpfc_els.c
+++ b/drivers/scsi/lpfc/lpfc_els.c
@@ -2128,8 +2128,8 @@ lpfc_cmpl_els_plogi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
NLP_EVT_DEVICE_RM);
} else {
/* Good status, call state machine */
- prsp = list_entry(cmdiocb->cmd_dmabuf->list.next,
- struct lpfc_dmabuf, list);
+ prsp = list_get_first(&cmdiocb->cmd_dmabuf->list,
+ struct lpfc_dmabuf, list);
if (!prsp)
goto out;
if (!lpfc_is_els_acc_rsp(prsp))
--
2.38.0
next prev parent reply other threads:[~2023-10-31 18:59 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-10-31 19:12 [PATCH 0/9] lpfc: Update lpfc to revision 14.2.0.16 Justin Tee
2023-10-31 19:12 ` [PATCH 1/9] lpfc: Correct maximum PCI function value for RAS fw logging Justin Tee
2023-10-31 19:12 ` [PATCH 2/9] lpfc: Fix possible file string name overflow when updating firmware Justin Tee
2023-10-31 19:12 ` Justin Tee [this message]
2023-10-31 19:12 ` [PATCH 4/9] lpfc: Eliminate unnecessary relocking in lpfc_check_nlp_post_devloss Justin Tee
2023-10-31 19:12 ` [PATCH 5/9] lpfc: Return early in lpfc_poll_eratt when the driver is unloading Justin Tee
2023-10-31 19:12 ` [PATCH 6/9] lpfc: Refactor and clean up mailbox command memory free Justin Tee
2023-10-31 19:12 ` [PATCH 7/9] lpfc: Enhance driver logging for selected discovery events Justin Tee
2023-10-31 19:12 ` [PATCH 8/9] lpfc: Update lpfc version to 14.2.0.16 Justin Tee
2023-10-31 19:12 ` [PATCH 9/9] lpfc: Copyright updates for 14.2.0.16 patches Justin Tee
2023-11-02 15:56 ` [PATCH 0/9] lpfc: Update lpfc to revision 14.2.0.16 Himanshu Madhani
2023-11-25 2:54 ` Martin K. Petersen
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