4.9-stable review patch. If anyone has any objections, please let me know.
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From: Omar Sandoval osandov@fb.com
[ Upstream commit 1448a2a5360ae06f25e2edc61ae070dff5c0beb4 ]
If we fail to allocate the request queue for a disk, we still need to free that disk, not just the previous ones. Additionally, we need to cleanup the previous request queues.
Signed-off-by: Omar Sandoval osandov@fb.com Signed-off-by: Jens Axboe axboe@kernel.dk Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/block/swim.c | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-)
--- a/drivers/block/swim.c +++ b/drivers/block/swim.c @@ -868,8 +868,17 @@ static int swim_floppy_init(struct swim_
exit_put_disks: unregister_blkdev(FLOPPY_MAJOR, "fd"); - while (drive--) - put_disk(swd->unit[drive].disk); + do { + struct gendisk *disk = swd->unit[drive].disk; + + if (disk) { + if (disk->queue) { + blk_cleanup_queue(disk->queue); + disk->queue = NULL; + } + put_disk(disk); + } + } while (drive--); return err; }