Forwarded: Re: [syzbot] [block?] general protection fault in blk_mq_quiesce_queue

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Subject: Re: [syzbot] [block?] general protection fault in blk_mq_quiesce_queue
Author: nenkov2004@xxxxxxxxx

#syz test: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
master

diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -680,6 +680,9 @@ int nvme_reset_ctrl_sync(struct nvme_ctrl *ctrl)
 {
 	int ret;

+	if (!test_bit(NVME_CTRL_STARTED_ONCE, &ctrl->flags))
+		return -EBUSY;
+
 	ret = nvme_reset_ctrl(ctrl);
 	if (!ret) {
 		flush_work(&ctrl->reset_work);