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Message-ID: <lsq.1581185940.49427136@decadent.org.uk>
Date: Sat, 08 Feb 2020 18:20:48 +0000
From: Ben Hutchings <ben@...adent.org.uk>
To: linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC: akpm@...ux-foundation.org, Denis Kirjanov <kda@...ux-powerpc.org>,
"Pan Bian" <bianpan2016@....com>,
"Martin K. Petersen" <martin.petersen@...cle.com>
Subject: [PATCH 3.16 109/148] scsi: bnx2i: fix potential use after free
3.16.82-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Pan Bian <bianpan2016@....com>
commit 29d28f2b8d3736ac61c28ef7e20fda63795b74d9 upstream.
The member hba->pcidev may be used after its reference is dropped. Move the
put function to where it is never used to avoid potential use after free
issues.
Fixes: a77171806515 ("[SCSI] bnx2i: Removed the reference to the netdev->base_addr")
Link: https://lore.kernel.org/r/1573043541-19126-1-git-send-email-bianpan2016@163.com
Signed-off-by: Pan Bian <bianpan2016@....com>
Signed-off-by: Martin K. Petersen <martin.petersen@...cle.com>
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
drivers/scsi/bnx2i/bnx2i_iscsi.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/scsi/bnx2i/bnx2i_iscsi.c
+++ b/drivers/scsi/bnx2i/bnx2i_iscsi.c
@@ -913,12 +913,12 @@ void bnx2i_free_hba(struct bnx2i_hba *hb
INIT_LIST_HEAD(&hba->ep_ofld_list);
INIT_LIST_HEAD(&hba->ep_active_list);
INIT_LIST_HEAD(&hba->ep_destroy_list);
- pci_dev_put(hba->pcidev);
if (hba->regview) {
pci_iounmap(hba->pcidev, hba->regview);
hba->regview = NULL;
}
+ pci_dev_put(hba->pcidev);
bnx2i_free_mp_bdt(hba);
bnx2i_release_free_cid_que(hba);
iscsi_host_free(shost);
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