This is a note to let you know that I've just added the patch titled memstick/ms_block: Add check for alloc_ordered_workqueue to the 6.0-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: memstick-ms_block-add-check-for-alloc_ordered_workqu.patch and it can be found in the queue-6.0 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit 6cb65b810e17a8cdb3be297f2d59b3728b1e08c2 Author: Jiasheng Jiang <jiasheng@xxxxxxxxxxx> Date: Sat Nov 26 09:25:58 2022 +0800 memstick/ms_block: Add check for alloc_ordered_workqueue [ Upstream commit 4f431a047a5c8698ed4b67e2760cfbeb5fffb69d ] As the alloc_ordered_workqueue may return NULL pointer, it should be better to add check for the return value. Moreover, the msb->io_queue should be freed if error occurs later. Fixes: 0ab30494bc4f ("memstick: add support for legacy memorysticks") Signed-off-by: Jiasheng Jiang <jiasheng@xxxxxxxxxxx> Link: https://lore.kernel.org/r/20221126012558.34374-1-jiasheng@xxxxxxxxxxx Signed-off-by: Ulf Hansson <ulf.hansson@xxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/drivers/memstick/core/ms_block.c b/drivers/memstick/core/ms_block.c index ba8414519515..04115cd92433 100644 --- a/drivers/memstick/core/ms_block.c +++ b/drivers/memstick/core/ms_block.c @@ -2116,6 +2116,11 @@ static int msb_init_disk(struct memstick_dev *card) dbg("Set total disk size to %lu sectors", capacity); msb->io_queue = alloc_ordered_workqueue("ms_block", WQ_MEM_RECLAIM); + if (!msb->io_queue) { + rc = -ENOMEM; + goto out_cleanup_disk; + } + INIT_WORK(&msb->io_work, msb_io_work); sg_init_table(msb->prealloc_sg, MS_BLOCK_MAX_SEGS+1); @@ -2125,10 +2130,12 @@ static int msb_init_disk(struct memstick_dev *card) msb_start(card); rc = device_add_disk(&card->dev, msb->disk, NULL); if (rc) - goto out_cleanup_disk; + goto out_destroy_workqueue; dbg("Disk added"); return 0; +out_destroy_workqueue: + destroy_workqueue(msb->io_queue); out_cleanup_disk: put_disk(msb->disk); out_free_tag_set: