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/openbmc/linux/drivers/scsi/smartpqi/ |
H A D | smartpqi_init.c | 6ce3cfb3 Fri Jul 08 13:47:41 CDT 2022 Kevin Barnett <kevin.barnett@microchip.com> scsi: smartpqi: Fix RAID map race condition
Correct a rare stale RAID map access when performing AIO during a RAID configuration change.
A race condition in the driver could cause it to access a stale RAID map when a logical volume is reconfigured.
Modify the driver logic to invalidate a RAID map very early when a RAID configuration change is detected and only switch to a new RAID map after the driver detects that the RAID map has changed.
Link: https://lore.kernel.org/r/165730606128.177165.7671413443814750829.stgit@brunhilda Reviewed-by: Scott Benesh <scott.benesh@microchip.com> Reviewed-by: Scott Teel <scott.teel@microchip.com> Reviewed-by: Mike McGowen <mike.mcgowen@microchip.com> Signed-off-by: Kevin Barnett <kevin.barnett@microchip.com> Signed-off-by: Don Brace <don.brace@microchip.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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