FAILED: patch "[PATCH] scsi: qla2xxx: Skip vport under deletion in report ID" failed to apply to 5.15-stable tree

[<gregkh@linuxfoundation.org>]

The patch below does not apply to the 5.15-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-5.15.y
git checkout FETCH_HEAD
git cherry-pick -x 23582731afa35031c94fadb71a4f3b4afd094649
# <resolve conflicts, build, test, etc.>
git commit -s
git send-email --to '<stable@vger.kernel.org>' --in-reply-to '2026090952-reissue-unmanaged-712c@gregkh' --subject-prefix 'PATCH 5.15.y' 'HEAD^..'

Possible dependencies:



thanks,

greg k-h

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

From 23582731afa35031c94fadb71a4f3b4afd094649 Mon Sep 17 00:00:00 2001
From: Nilesh Javali <njavali@marvell.com>
Date: Thu, 30 Jul 2026 21:28:26 +0530
Subject: [PATCH] scsi: qla2xxx: Skip vport under deletion in report ID
 acquisition

qla24xx_report_id_acquisition() format-1 handling walks ha->vp_list under
vport_slock, takes a vref_count on the matching vport and calls
qla_update_host_map() to register its port id.

A vport teardown via qla24xx_vport_delete() sets VPORT_DELETE, then
qla24xx_disable_vp() removes the vport from the host_map btree and zeroes
vha->d_id (RESET_AL_PA). The vport is only unlinked from vp_list later,
in qla24xx_deallocate_vp_id(), which clears vp_map[idx] (RESET_VP_IDX)
but does not touch host_map. In the window in between, report ID
acquisition can still find the vport on vp_list and call
qla_update_host_map(); with d_id already zeroed it takes the
btree_insert32() path and re-inserts the dying vport into host_map.
Nothing cleans that entry afterwards, so once scsi_host_put() frees the
vha a later host_map lookup dereferences freed memory.

Skip a vport that has VPORT_DELETE set before taking the reference, so it
is neither re-registered nor scheduled for DPC re-registration. This
mirrors the existing guard in qla2x00_alert_all_vps().

Fixes: 41dc529a4602 ("qla2xxx: Improve RSCN handling in driver")
Cc: stable@vger.kernel.org
Reported-by: Sashiko <sashiko-dev@google.com>
Signed-off-by: Nilesh Javali <njavali@marvell.com>
Link: https://patch.msgid.link/20260730155838.2119230-22-njavali@marvell.com
Signed-off-by: Martin K. Petersen (Oracle) <mkp@kernel.org>

diff --git a/drivers/scsi/qla2xxx/qla_mbx.c b/drivers/scsi/qla2xxx/qla_mbx.c
index ab5648eb5f20..affcd87893cd 100644
--- a/drivers/scsi/qla2xxx/qla_mbx.c
+++ b/drivers/scsi/qla2xxx/qla_mbx.c
@@ -4268,6 +4268,8 @@ qla24xx_report_id_acquisition(scsi_qla_host_t *vha, void *pkt)
 			spin_lock_irqsave(&ha->vport_slock, flags);
 			list_for_each_entry(vp, &ha->vp_list, list) {
 				if (vp_idx == vp->vp_idx) {
+					if (test_bit(VPORT_DELETE, &vp->dpc_flags))
+						break;
 					found = 1;
 					atomic_inc(&vp->vref_count);
 					break;