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scsi: sd: fix missing put_disk() when device_add(&disk_dev) fails

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commit 1e111c4b3a upstream.

If device_add(&sdkp->disk_dev) fails, put_device() runs
scsi_disk_release(), which frees the scsi_disk but leaves the gendisk
referenced. The device_add_disk() error path in sd_probe() calls
put_disk(gd); call put_disk(gd) here to mirror that cleanup.

Fixes: 265dfe8ebb ("scsi: sd: Free scsi_disk device via put_device()")
Cc: stable@vger.kernel.org
Reviewed-by: John Garry <john.g.garry@oracle.com>
Signed-off-by: Yang Xiuwei <yangxiuwei@kylinos.cn>
Link: https://patch.msgid.link/20260330014952.152776-1-yangxiuwei@kylinos.cn
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Yang Xiuwei
2026-05-17 17:13:33 +02:00
committed by Greg Kroah-Hartman
parent 8a1fc8d698
commit 262152ec37
1 changed files with 1 additions and 0 deletions
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drivers/scsi/sd.c
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@@ -3727,6 +3727,7 @@ static int sd_probe(struct device *dev)
error = device_add(&sdkp->disk_dev);
if (error) {
put_device(&sdkp->disk_dev);
put_disk(gd);
goto out;
}