android/android_kernel_samsung_sm8650
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

scsi: mpi3mr: Bad drive in topology results kernel crash

Browse Source 
[ Upstream commit 8e45183978d64699df639e795235433a60f35047 ]

When the SAS Transport Layer support is enabled and a device exposed to
the OS by the driver fails INQUIRY commands, the driver frees up the memory
allocated for an internal HBA port data structure. However, in some places,
the reference to the freed memory is not cleared. When the firmware sends
the Device Info change event for the same device again, the freed memory is
accessed and that leads to memory corruption and OS crash.

Signed-off-by: Ranjan Kumar <ranjan.kumar@broadcom.com>
Signed-off-by: Sreekanth Reddy <sreekanth.reddy@broadcom.com>
Link: https://lore.kernel.org/r/20230228140835.4075-7-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 06:08:35 -08:00 committed by Greg Kroah-Hartman
parent a0b33e1d8d
commit 1f822ae8fb
1 changed files with 7 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
drivers/scsi/mpi3mr/mpi3mr_transport.c
View File

@ -2355,15 +2355,16 @@ int mpi3mr_report_tgtdev_to_sas_transport(struct mpi3mr_ioc *mrioc,
tgtdev->host_exposed = 1;
if (!mpi3mr_sas_port_add(mrioc, tgtdev->dev_handle,
sas_address_parent, hba_port)) {
tgtdev->host_exposed = 0;
retval = -1;
} else if ((!tgtdev->starget)) {
if (!mrioc->is_driver_loading)
} else if ((!tgtdev->starget) && (!mrioc->is_driver_loading)) {
mpi3mr_sas_port_remove(mrioc, sas_address,
sas_address_parent, hba_port);
tgtdev->host_exposed = 0;
retval = -1;
}
if (retval) {
tgtdev->dev_spec.sas_sata_inf.hba_port = NULL;
tgtdev->host_exposed = 0;
}
return retval;
}
@ -2392,6 +2393,7 @@ void mpi3mr_remove_tgtdev_from_sas_transport(struct mpi3mr_ioc *mrioc,
mpi3mr_sas_port_remove(mrioc, sas_address, sas_address_parent,
hba_port);
tgtdev->host_exposed = 0;
tgtdev->dev_spec.sas_sata_inf.hba_port = NULL;
}
/**
@ -2448,7 +2450,7 @@ static u8 mpi3mr_get_port_id_by_rphy(struct mpi3mr_ioc *mrioc, struct sas_rphy *
tgtdev = __mpi3mr_get_tgtdev_by_addr_and_rphy(mrioc,
rphy->identify.sas_address, rphy);
if (tgtdev) {
if (tgtdev && tgtdev->dev_spec.sas_sata_inf.hba_port) {
port_id =
tgtdev->dev_spec.sas_sata_inf.hba_port->port_id;
mpi3mr_tgtdev_put(tgtdev);