FAILED: patch "[PATCH] scsi: qla2xxx: Zero dport diagnostics buffer to avoid info" failed to apply to 6.18-stable tree

[<gregkh@linuxfoundation.org>]

The patch below does not apply to the 6.18-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable@vger.kernel.org>.

To reproduce the conflict and resubmit, you may use the following commands:

git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.18.y
git checkout FETCH_HEAD
git cherry-pick -x a152edab3854f01dd2daf3eaf8f32cbabdb3834e
# <resolve conflicts, build, test, etc.>
git commit -s
git send-email --to '<stable@vger.kernel.org>' --in-reply-to '2026090928-deputize-waltz-4cbc@gregkh' --subject-prefix 'PATCH 6.18.y' 'HEAD^..'

Possible dependencies:



thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From a152edab3854f01dd2daf3eaf8f32cbabdb3834e Mon Sep 17 00:00:00 2001
From: Nilesh Javali <njavali@marvell.com>
Date: Thu, 23 Jul 2026 10:34:10 +0530
Subject: [PATCH] scsi: qla2xxx: Zero dport diagnostics buffer to avoid info
 leak

qla2x00_do_dport_diagnostics() allocates the qla_dport_diag response
buffer with kmalloc_obj() (non-zeroing) and, on success, copies the full
sizeof(*dd) back to user space via sg_copy_from_buffer(). The inbound
sg_copy_to_buffer() only fills as many bytes as the user request payload
provides, and qla26xx_dport_diagnostics() zeroes only dd->buf. The
options and unused[] fields are therefore copied out uninitialized,
leaking kernel heap contents to user space.

Allocate with kzalloc_obj(), matching qla2x00_do_dport_diagnostics_v2().

Fixes: ec89146215d1 ("qla2xxx: Add bsg interface to support D_Port Diagnostics.")
Cc: stable@vger.kernel.org
Signed-off-by: Nilesh Javali <njavali@marvell.com>
Reviewed-by: Hannes Reinecke <hare@kernel.org>
Link: https://patch.msgid.link/20260723050413.3897522-54-njavali@marvell.com
Signed-off-by: Martin K. Petersen (Oracle) <mkp@kernel.org>

diff --git a/drivers/scsi/qla2xxx/qla_bsg.c b/drivers/scsi/qla2xxx/qla_bsg.c
index f9f9687316b5..4a9cf8da67a6 100644
--- a/drivers/scsi/qla2xxx/qla_bsg.c
+++ b/drivers/scsi/qla2xxx/qla_bsg.c
@@ -2806,7 +2806,7 @@ qla2x00_do_dport_diagnostics(struct bsg_job *bsg_job)
 	    !IS_QLA28XX(vha->hw) && !IS_QLA29XX(vha->hw))
 		return -EPERM;
 
-	dd = kmalloc_obj(*dd);
+	dd = kzalloc_obj(*dd);
 	if (!dd) {
 		ql_log(ql_log_warn, vha, 0x70db,
 		    "Failed to allocate memory for dport.\n");