From: bvanassche@acm.org (Bart Van Assche)
Subject: [PATCH v2 1/2] nvme-core: Make implicit seed truncation explicit
Date: Wed, 10 Oct 2018 08:08:19 -0700 [thread overview]
Message-ID: <20181010150820.203745-2-bvanassche@acm.org> (raw)
In-Reply-To: <20181010150820.203745-1-bvanassche@acm.org>
The nvme_user_io.slba field is 64 bits wide. That value is copied into the
32-bit bio_integrity_payload.bip_iter.bi_sector field. Make that truncation
explicit to avoid that Coverity complains about implicit truncation. See
also Coverity ID 1056486 on http://scan.coverity.com/projects/linux.
Signed-off-by: Bart Van Assche <bvanassche at acm.org>
---
drivers/nvme/host/core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index 8cecb36b5af1..65c42448e904 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -1132,7 +1132,7 @@ static int nvme_submit_io(struct nvme_ns *ns, struct nvme_user_io __user *uio)
return nvme_submit_user_cmd(ns->queue, &c,
(void __user *)(uintptr_t)io.addr, length,
- metadata, meta_len, io.slba, NULL, 0);
+ metadata, meta_len, lower_32_bits(io.slba), NULL, 0);
}
static u32 nvme_known_admin_effects(u8 opcode)
--
2.19.0.605.g01d371f741-goog
next prev parent reply other threads:[~2018-10-10 15:08 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-10 15:08 [PATCH v2 0/2] Fixes for issues detected by static analyzers Bart Van Assche
2018-10-10 15:08 ` Bart Van Assche [this message]
2018-10-10 15:34 ` [PATCH v2 1/2] nvme-core: Make implicit seed truncation explicit Keith Busch
2018-10-10 15:08 ` [PATCH v2 2/2] nvmet-fcloop: Suppress a compiler warning Bart Van Assche
2018-10-10 15:57 ` James Smart
2018-10-10 16:35 ` Bart Van Assche
2018-10-11 5:55 ` [PATCH v2 0/2] Fixes for issues detected by static analyzers Christoph Hellwig
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