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sd: delay calling free_opal_dev

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Call free_opal_dev from scsi_disk_release as the opal_dev field is accessed
from the ioctl handler, which isn't synchronized vs sd_release and thus
can be accessed during or after sd_release was called.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Link: https://lore.kernel.org/r/20220308055200.735835-7-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2022-03-08 06:51:52 +01:00 committed by Jens Axboe
parent c76c46fa04
commit 534cf52aa9
1 changed files with 1 additions and 2 deletions
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3
drivers/scsi/sd.c
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@ -3632,8 +3632,6 @@ static int sd_remove(struct device *dev)
del_gendisk(sdkp->disk);
sd_shutdown(dev);
free_opal_dev(sdkp->opal_dev);
mutex_lock(&sd_ref_mutex);
dev_set_drvdata(dev, NULL);
put_device(&sdkp->disk_dev);
@ -3675,6 +3673,7 @@ static void scsi_disk_release(struct device *dev)
sd_zbc_release_disk(sdkp);
put_device(&sdkp->device->sdev_gendev);
free_opal_dev(sdkp->opal_dev);
kfree(sdkp);
}