[PATCH v5 3/6] nbd: check sock index in nbd_read_stat()
From: Yu Kuai <hidden>
Date: 2021-09-09 14:04:39
Also in:
lkml
Subsystem:
block layer, network block device (nbd), the rest · Maintainers:
Jens Axboe, Josef Bacik, Linus Torvalds
The sock that clent send request in nbd_send_cmd() and receive reply in nbd_read_stat() should be the same. Signed-off-by: Yu Kuai <redacted> --- drivers/block/nbd.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c
index 550c8dc438ac..6d8cbf8be231 100644
--- a/drivers/block/nbd.c
+++ b/drivers/block/nbd.c@@ -746,6 +746,10 @@ static struct nbd_cmd *nbd_read_stat(struct nbd_device *nbd, int index) ret = -ENOENT; goto out; } + if (cmd->index != index) { + dev_err(disk_to_dev(nbd->disk), "Unexpected reply %d from different sock %d (expected %d)", + tag, index, cmd->index); + } if (cmd->cmd_cookie != nbd_handle_to_cookie(handle)) { dev_err(disk_to_dev(nbd->disk), "Double reply on req %p, cmd_cookie %u, handle cookie %u\n", req, cmd->cmd_cookie, nbd_handle_to_cookie(handle));
--
2.31.1