This is a note to let you know that I've just added the patch titled
IB/iser: Fix wrong calculation of protection buffer length
to the 4.0-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
ib-iser-fix-wrong-calculation-of-protection-buffer-length.patch
and it can be found in the queue-4.0 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From a065fe6aa25ba6ba93c02dc13486131bb3c64d5f Mon Sep 17 00:00:00 2001
From: Sagi Grimberg <sagig@xxxxxxxxxxxx>
Date: Tue, 14 Apr 2015 18:08:13 +0300
Subject: IB/iser: Fix wrong calculation of protection buffer length
From: Sagi Grimberg <sagig@xxxxxxxxxxxx>
commit a065fe6aa25ba6ba93c02dc13486131bb3c64d5f upstream.
This length miss-calculation may cause a silent data corruption
in the DIX case and cause the device to reference unmapped area.
Fixes: d77e65350f2d ('libiscsi, iser: Adjust data_length to include protection information')
Signed-off-by: Sagi Grimberg <sagig@xxxxxxxxxxxx>
Signed-off-by: Doug Ledford <dledford@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/infiniband/ulp/iser/iser_initiator.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/infiniband/ulp/iser/iser_initiator.c
+++ b/drivers/infiniband/ulp/iser/iser_initiator.c
@@ -409,8 +409,8 @@ int iser_send_command(struct iscsi_conn
if (scsi_prot_sg_count(sc)) {
prot_buf->buf = scsi_prot_sglist(sc);
prot_buf->size = scsi_prot_sg_count(sc);
- prot_buf->data_len = data_buf->data_len >>
- ilog2(sc->device->sector_size) * 8;
+ prot_buf->data_len = (data_buf->data_len >>
+ ilog2(sc->device->sector_size)) * 8;
}
if (hdr->flags & ISCSI_FLAG_CMD_READ) {
Patches currently in stable-queue which might be from sagig@xxxxxxxxxxxx are
queue-4.0/target-file-fix-bug-when-config_debug_sg-y-and-dif-protection-enabled.patch
queue-4.0/ib-core-don-t-disallow-registering-region-starting-at-0x0.patch
queue-4.0/target-file-fix-unmap-with-dif-protection-support.patch
queue-4.0/iser-target-fix-session-hang-in-case-of-an-rdma-read-dif-error.patch
queue-4.0/iscsi-target-convert-iscsi_thread_set-usage-to-kthread.h.patch
queue-4.0/sd-unregister-integrity-profile.patch
queue-4.0/target-file-fix-sg-table-for-prot_buf-initialization.patch
queue-4.0/iser-target-fix-possible-deadlock-in-rdma_cm-connection-error.patch
queue-4.0/sd-fix-missing-ato-tag-check.patch
queue-4.0/ib-iser-fix-wrong-calculation-of-protection-buffer-length.patch
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