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vfio/pds: Always clear the save/restore FDs on reset

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After reset the VFIO device state will always be put in
VFIO_DEVICE_STATE_RUNNING, but the save/restore files will only be
cleared if the previous state was VFIO_DEVICE_STATE_ERROR. This
can/will cause the restore/save files to be leaked if/when the
migration state machine transitions through the states that
re-allocates these files. Fix this by always clearing the
restore/save files for resets.

Fixes: 7dabb1bcd1 ("vfio/pds: Add support for firmware recovery")
Cc: stable@vger.kernel.org
Signed-off-by: Brett Creeley <brett.creeley@amd.com>
Reviewed-by: Shannon Nelson <shannon.nelson@amd.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Link: https://lore.kernel.org/r/20240228003205.47311-2-brett.creeley@amd.com
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
This commit is contained in:
Brett Creeley 2024-02-27 16:32:04 -08:00 committed by Alex Williamson
parent 701ab93585
commit 8512ed2563
1 changed files with 2 additions and 2 deletions
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4
drivers/vfio/pci/pds/vfio_dev.c
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@ -32,9 +32,9 @@ again:
mutex_lock(&pds_vfio->reset_mutex);
if (pds_vfio->deferred_reset) {
pds_vfio->deferred_reset = false;
pds_vfio_put_restore_file(pds_vfio);
pds_vfio_put_save_file(pds_vfio);
if (pds_vfio->state == VFIO_DEVICE_STATE_ERROR) {
pds_vfio_put_restore_file(pds_vfio);
pds_vfio_put_save_file(pds_vfio);
pds_vfio_dirty_disable(pds_vfio, false);
}
pds_vfio->state = pds_vfio->deferred_reset_state;