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From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Pan Bian <bianpan2016@163.com>,
	"Martin K . Petersen" <martin.petersen@oracle.com>,
	Sasha Levin <sashal@kernel.org>,
	linux-scsi@vger.kernel.org
Subject: [PATCH AUTOSEL 5.4 157/205] scsi: bnx2i: fix potential use after free
Date: Thu, 16 Jan 2020 11:42:12 -0500
Message-ID: <20200116164300.6705-157-sashal@kernel.org> (raw)
In-Reply-To: <20200116164300.6705-1-sashal@kernel.org>

From: Pan Bian <bianpan2016@163.com>

[ Upstream commit 29d28f2b8d3736ac61c28ef7e20fda63795b74d9 ]

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@163.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/scsi/bnx2i/bnx2i_iscsi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/scsi/bnx2i/bnx2i_iscsi.c b/drivers/scsi/bnx2i/bnx2i_iscsi.c
index c5fa5f3b00e9..0b28d44d3573 100644
--- a/drivers/scsi/bnx2i/bnx2i_iscsi.c
+++ b/drivers/scsi/bnx2i/bnx2i_iscsi.c
@@ -915,12 +915,12 @@ void bnx2i_free_hba(struct bnx2i_hba *hba)
 	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);
-- 
2.20.1


  parent reply index

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20200116164300.6705-1-sashal@kernel.org>
2020-01-16 16:39 ` [PATCH AUTOSEL 5.4 005/205] scsi: lpfc: Fix hdwq sgl locks and irq handling Sasha Levin
2020-01-16 16:39 ` [PATCH AUTOSEL 5.4 006/205] scsi: lpfc: Fix list corruption detected in lpfc_put_sgl_per_hdwq Sasha Levin
2020-01-16 16:40 ` [PATCH AUTOSEL 5.4 061/205] scsi: esas2r: unlock on error in esas2r_nvram_read_direct() Sasha Levin
2020-01-16 16:40 ` [PATCH AUTOSEL 5.4 062/205] scsi: hisi_sas: Don't create debugfs dump folder twice Sasha Levin
2020-01-16 16:40 ` [PATCH AUTOSEL 5.4 063/205] scsi: hisi_sas: Set the BIST init value before enabling BIST Sasha Levin
2020-01-16 16:41 ` [PATCH AUTOSEL 5.4 089/205] scsi: ufs: delete redundant function ufshcd_def_desc_sizes() Sasha Levin
2020-01-16 16:41 ` [PATCH AUTOSEL 5.4 095/205] scsi: core: scsi_trace: Use get_unaligned_be*() Sasha Levin
2020-01-16 16:41 ` [PATCH AUTOSEL 5.4 122/205] scsi: lpfc: Fix a kernel warning triggered by lpfc_get_sgl_per_hdwq() Sasha Levin
2020-01-16 16:41 ` [PATCH AUTOSEL 5.4 136/205] scsi: hisi_sas: Return directly if init hardware failed Sasha Levin
2020-01-16 16:42 ` [PATCH AUTOSEL 5.4 156/205] scsi: qla4xxx: fix double free bug Sasha Levin
2020-01-16 16:42 ` Sasha Levin [this message]
2020-01-16 16:42 ` [PATCH AUTOSEL 5.4 158/205] scsi: target: core: Fix a pr_debug() argument Sasha Levin
2020-01-16 16:42 ` [PATCH AUTOSEL 5.4 166/205] scsi: scsi_transport_sas: Fix memory leak when removing devices Sasha Levin
2020-01-16 16:42 ` [PATCH AUTOSEL 5.4 177/205] scsi: qla2xxx: fix rports not being mark as lost in sync fabric scan Sasha Levin
2020-01-16 16:42 ` [PATCH AUTOSEL 5.4 178/205] scsi: qla2xxx: Fix qla2x00_request_irqs() for MSI Sasha Levin
2020-01-16 16:42 ` [PATCH AUTOSEL 5.4 200/205] scsi: ufs: Give an unique ID to each ufs-bsg Sasha Levin
2020-01-16 16:42 ` [PATCH AUTOSEL 5.4 204/205] scsi: mpt3sas: Fix double free in attach error handling Sasha Levin

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