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[PATCH v2] hw/nvme: add missing return statement
From: |
Dmitry Tikhov |
Subject: |
[PATCH v2] hw/nvme: add missing return statement |
Date: |
Fri, 15 Apr 2022 23:48:32 +0300 |
Since there is no return after nvme_dsm_cb invocation, metadata
associated with non-zero block range is currently zeroed. Also this
behaviour leads to segfault since we schedule iocb->bh two times.
First when entering nvme_dsm_cb with iocb->idx == iocb->nr and
second because of missing return on call stack unwinding by calling
blk_aio_pwrite_zeroes and subsequent nvme_dsm_cb callback.
Fixes: d7d1474fd85d ("hw/nvme: reimplement dsm to allow cancellation")
Signed-off-by: Dmitry Tikhov <d.tihov@yadro.com>
---
v2:
- Instead of adding else just insert return statement
- Add: "Fixes: d7d1474fd85d" to commit message
hw/nvme/ctrl.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/hw/nvme/ctrl.c b/hw/nvme/ctrl.c
index 03760ddeae..74540a03d5 100644
--- a/hw/nvme/ctrl.c
+++ b/hw/nvme/ctrl.c
@@ -2372,6 +2372,7 @@ static void nvme_dsm_md_cb(void *opaque, int ret)
}
nvme_dsm_cb(iocb, 0);
+ return;
}
iocb->aiocb = blk_aio_pwrite_zeroes(ns->blkconf.blk, nvme_moff(ns, slba),
--
2.35.1
- [PATCH v2] hw/nvme: add missing return statement,
Dmitry Tikhov <=