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scsi: mpi3mr: Driver unload crashes host when enhanced logging is enabled

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[ 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>
This commit is contained in:
Ranjan Kumar 2023-02-28 06:08:31 -08:00 committed by Greg Kroah-Hartman
parent ec3a119c30
commit 88f7fb47e0
1 changed files with 2 additions and 1 deletions
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3
drivers/scsi/mpi3mr/mpi3mr_transport.c
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@ -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)