linux-kernel - [PATCH 3.16 280/328] tools: hv: fcopy: set 'error' in case an unknown operation was requested

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Message-ID: <lsq.1544392233.171316839@decadent.org.uk>
Date:   Sun, 09 Dec 2018 21:50:33 +0000
From:   Ben Hutchings <ben@...adent.org.uk>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:     akpm@...ux-foundation.org,
        "Vitaly Kuznetsov" <vkuznets@...hat.com>,
        "Greg Kroah-Hartman" <gregkh@...uxfoundation.org>,
        "K. Y. Srinivasan" <kys@...rosoft.com>
Subject: [PATCH 3.16 280/328] tools: hv: fcopy: set 'error' in case an
 unknown operation was requested

3.16.62-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Vitaly Kuznetsov <vkuznets@...hat.com>

commit c2d68afba86d1ff01e7300c68bc16a9234dcd8e9 upstream.

'error' variable is left uninitialized in case we see an unknown operation.
As we don't immediately return and proceed to pwrite() we need to set it
to something, HV_E_FAIL sounds good enough.

Signed-off-by: Vitaly Kuznetsov <vkuznets@...hat.com>
Signed-off-by: K. Y. Srinivasan <kys@...rosoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 tools/hv/hv_fcopy_daemon.c | 1 +
 1 file changed, 1 insertion(+)

--- a/tools/hv/hv_fcopy_daemon.c
+++ b/tools/hv/hv_fcopy_daemon.c
@@ -184,6 +184,7 @@ int main(void)
 			break;
 
 		default:
+			error = HV_E_FAIL;
 			syslog(LOG_ERR, "Unknown operation: %d",
 				in_msg->operation);