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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>,
	Manish Rangankar <mrangankar@marvell.com>,
	"Martin K . Petersen" <martin.petersen@oracle.com>,
	Sasha Levin <sashal@kernel.org>,
	linux-scsi@vger.kernel.org
Subject: [PATCH AUTOSEL 4.14 357/371] scsi: qla4xxx: fix double free bug
Date: Thu, 16 Jan 2020 12:23:49 -0500
Message-ID: <20200116172403.18149-300-sashal@kernel.org> (raw)
In-Reply-To: <20200116172403.18149-1-sashal@kernel.org>

From: Pan Bian <bianpan2016@163.com>

[ Upstream commit 3fe3d2428b62822b7b030577cd612790bdd8c941 ]

The variable init_fw_cb is released twice, resulting in a double free
bug. The call to the function dma_free_coherent() before goto is removed to
get rid of potential double free.

Fixes: 2a49a78ed3c8 ("[SCSI] qla4xxx: added IPv6 support.")
Link: https://lore.kernel.org/r/1572945927-27796-1-git-send-email-bianpan2016@163.com
Signed-off-by: Pan Bian <bianpan2016@163.com>
Acked-by: Manish Rangankar <mrangankar@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/scsi/qla4xxx/ql4_mbx.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/drivers/scsi/qla4xxx/ql4_mbx.c b/drivers/scsi/qla4xxx/ql4_mbx.c
index 1da04f323d38..c402fc583da3 100644
--- a/drivers/scsi/qla4xxx/ql4_mbx.c
+++ b/drivers/scsi/qla4xxx/ql4_mbx.c
@@ -641,9 +641,6 @@ int qla4xxx_initialize_fw_cb(struct scsi_qla_host * ha)
 
 	if (qla4xxx_get_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma) !=
 	    QLA_SUCCESS) {
-		dma_free_coherent(&ha->pdev->dev,
-				  sizeof(struct addr_ctrl_blk),
-				  init_fw_cb, init_fw_cb_dma);
 		goto exit_init_fw_cb;
 	}
 
-- 
2.20.1


  parent reply index

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20200116172403.18149-1-sashal@kernel.org>
2020-01-16 17:20 ` [PATCH AUTOSEL 4.14 132/371] scsi: megaraid_sas: reduce module load time Sasha Levin
2020-01-16 17:20 ` [PATCH AUTOSEL 4.14 158/371] scsi: qla2xxx: Unregister chrdev if module initialization fails Sasha Levin
2020-01-16 17:20 ` [PATCH AUTOSEL 4.14 159/371] scsi: target/core: Fix a race condition in the LUN lookup code Sasha Levin
2020-01-16 17:20 ` [PATCH AUTOSEL 4.14 174/371] scsi: qla2xxx: Fix a format specifier Sasha Levin
2020-01-16 17:20 ` [PATCH AUTOSEL 4.14 175/371] scsi: qla2xxx: Avoid that qlt_send_resp_ctio() corrupts memory Sasha Levin
2020-01-16 17:22 ` [PATCH AUTOSEL 4.14 248/371] scsi: libfc: fix null pointer dereference on a null lport Sasha Levin
2020-01-16 17:22 ` [PATCH AUTOSEL 4.14 290/371] scsi: fnic: fix msix interrupt allocation Sasha Levin
2020-01-16 17:23 ` [PATCH AUTOSEL 4.14 339/371] scsi: esas2r: unlock on error in esas2r_nvram_read_direct() Sasha Levin
2020-01-16 17:23 ` [PATCH AUTOSEL 4.14 342/371] scsi: core: scsi_trace: Use get_unaligned_be*() Sasha Levin
2020-01-16 17:23 ` Sasha Levin [this message]
2020-01-16 17:23 ` [PATCH AUTOSEL 4.14 358/371] scsi: bnx2i: fix potential use after free Sasha Levin
2020-01-16 17:23 ` [PATCH AUTOSEL 4.14 359/371] scsi: target: core: Fix a pr_debug() argument Sasha Levin
2020-01-16 17:23 ` [PATCH AUTOSEL 4.14 365/371] scsi: qla2xxx: fix rports not being mark as lost in sync fabric scan Sasha Levin
2020-01-16 17:23 ` [PATCH AUTOSEL 4.14 366/371] scsi: qla2xxx: Fix qla2x00_request_irqs() for MSI Sasha Levin

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