scsi: sg: add sg_remove_request in sg_write (83c6f239) · Commits · 戴 / test

If the __copy_from_user function failed we need to call sg_remove_request in sg_write. Link: https://lore.kernel.org/r/610618d9-e983-fd56-ed0f-639428343af7@huawei.com Acked-by:

drivers/scsi/sg.c

+3 −1

Original line number	Diff line number	Diff line
		@@ -685,8 +685,10 @@ sg_write(struct file filp, const char __user buf, size_t count, loff_t * ppos)
		hp->flags = input_size; /* structure abuse ... */
		hp->pack_id = old_hdr.pack_id;
		hp->usr_ptr = NULL;
		if (copy_from_user(cmnd, buf, cmd_size))
		if (copy_from_user(cmnd, buf, cmd_size)) {
		sg_remove_request(sfp, srp);
		return -EFAULT;
		}
		/*
		* SG_DXFER_TO_FROM_DEV is functionally equivalent to SG_DXFER_FROM_DEV,
		* but is is possible that the app intended SG_DXFER_TO_DEV, because there