From: Ranjan Kumar <ranjan.kumar@broadcom.com>
Date: Tue, 28 Feb 2023 06:08:31 -0800
Subject: [PATCH] scsi: mpi3mr: Driver unload crashes host when enhanced
logging is enabled
References: bsc#1012628
Patch-mainline: 6.2.9
Git-commit: 5b06a7169c59ce0c77ef8b9c82aa07c478f82aac
[ Upstream commit 5b06a7169c59ce0c77ef8b9c82aa07c478f82aac ]
Prevent driver from trying to dereference a NULL pointer in a debug print
while removing a device during driver unload.
Signed-off-by: Ranjan Kumar <ranjan.kumar@broadcom.com>
Signed-off-by: Sreekanth Reddy <sreekanth.reddy@broadcom.com>
Link: https://lore.kernel.org/r/20230228140835.4075-3-ranjan.kumar@broadcom.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
drivers/scsi/mpi3mr/mpi3mr_transport.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/scsi/mpi3mr/mpi3mr_transport.c b/drivers/scsi/mpi3mr/mpi3mr_transport.c
index 50263ba4..90f61a0a 100644
--- a/drivers/scsi/mpi3mr/mpi3mr_transport.c
+++ b/drivers/scsi/mpi3mr/mpi3mr_transport.c
@@ -1549,7 +1549,8 @@ static void mpi3mr_sas_port_remove(struct mpi3mr_ioc *mrioc, u64 sas_address,
list_for_each_entry_safe(mr_sas_phy, next_phy,
&mr_sas_port->phy_list, port_siblings) {
- if ((mrioc->logging_level & MPI3_DEBUG_TRANSPORT_INFO))
+ if ((!mrioc->stop_drv_processing) &&
+ (mrioc->logging_level & MPI3_DEBUG_TRANSPORT_INFO))
dev_info(&mr_sas_port->port->dev,
"remove: sas_address(0x%016llx), phy(%d)\n",
(unsigned long long)
--
2.35.3