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Message-ID: <20250630111803.94389-2-fourier.thomas@gmail.com>
Date: Mon, 30 Jun 2025 13:18:02 +0200
From: Thomas Fourier <fourier.thomas@...il.com>
To:
Cc: Thomas Fourier <fourier.thomas@...il.com>,
Tyrel Datwyler <tyreld@...ux.ibm.com>,
"James E.J. Bottomley" <James.Bottomley@...senPartnership.com>,
"Martin K. Petersen" <martin.petersen@...cle.com>,
Nicholas Bellinger <nab@...ux-iscsi.org>,
Steven Royer <seroyer@...ux.vnet.ibm.com>,
"Bryant G. Ly" <bryantly@...ux.vnet.ibm.com>,
Michael Cyr <mikecyr@...ux.vnet.ibm.com>,
linux-scsi@...r.kernel.org,
target-devel@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: [PATCH] ibmvscsis: Fix dma_unmap_sg() nents value
The dma_unmap_sg() functions should be called with the same nents as the
dma_map_sg(), not the value the map function returned.
Fixes: 88a678bbc34c ("ibmvscsis: Initial commit of IBM VSCSI Tgt Driver")
Signed-off-by: Thomas Fourier <fourier.thomas@...il.com>
---
drivers/scsi/ibmvscsi_tgt/libsrp.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/scsi/ibmvscsi_tgt/libsrp.c b/drivers/scsi/ibmvscsi_tgt/libsrp.c
index 8a0e28aec928..0ecad398ed3d 100644
--- a/drivers/scsi/ibmvscsi_tgt/libsrp.c
+++ b/drivers/scsi/ibmvscsi_tgt/libsrp.c
@@ -184,7 +184,8 @@ static int srp_direct_data(struct ibmvscsis_cmd *cmd, struct srp_direct_buf *md,
err = rdma_io(cmd, sg, nsg, md, 1, dir, len);
if (dma_map)
- dma_unmap_sg(iue->target->dev, sg, nsg, DMA_BIDIRECTIONAL);
+ dma_unmap_sg(iue->target->dev, sg, cmd->se_cmd.t_data_nents,
+ DMA_BIDIRECTIONAL);
return err;
}
@@ -256,7 +257,8 @@ static int srp_indirect_data(struct ibmvscsis_cmd *cmd, struct srp_cmd *srp_cmd,
err = rdma_io(cmd, sg, nsg, md, nmd, dir, len);
if (dma_map)
- dma_unmap_sg(iue->target->dev, sg, nsg, DMA_BIDIRECTIONAL);
+ dma_unmap_sg(iue->target->dev, sg, cmd->se_cmd.t_data_nents,
+ DMA_BIDIRECTIONAL);
free_mem:
if (token && dma_map) {
--
2.43.0
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