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From 9e0f5b64f30c2f841f297e25c2f3a6d82c8a16b8 Mon Sep 17 00:00:00 2001
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From: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
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Date: Mon, 27 Jan 2020 19:01:57 +0100
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Subject: [PATCH 086/116] virtiofsd: fix memory leak on lo.source
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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RH-Author: Dr. David Alan Gilbert <dgilbert@redhat.com>
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Message-id: <20200127190227.40942-83-dgilbert@redhat.com>
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Patchwork-id: 93536
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O-Subject: [RHEL-AV-8.2 qemu-kvm PATCH 082/112] virtiofsd: fix memory leak on lo.source
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Bugzilla: 1694164
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RH-Acked-by: Philippe Mathieu-Daudé <philmd@redhat.com>
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RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
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RH-Acked-by: Sergio Lopez Pascual <slp@redhat.com>
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From: Liu Bo <bo.liu@linux.alibaba.com>
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valgrind reported that lo.source is leaked on quiting, but it was defined
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as (const char*) as it may point to a const string "/".
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Signed-off-by: Liu Bo <bo.liu@linux.alibaba.com>
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Reviewed-by: Misono Tomohiro <misono.tomohiro@jp.fujitsu.com>
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Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
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(cherry picked from commit eb68a33b5fc5dde87bd9b99b94e7c33a5d8ea82e)
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Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
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---
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tools/virtiofsd/passthrough_ll.c | 7 ++++---
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1 file changed, 4 insertions(+), 3 deletions(-)
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diff --git a/tools/virtiofsd/passthrough_ll.c b/tools/virtiofsd/passthrough_ll.c
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index af050c6..056ebe8 100644
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--- a/tools/virtiofsd/passthrough_ll.c
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+++ b/tools/virtiofsd/passthrough_ll.c
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@@ -115,7 +115,7 @@ struct lo_data {
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int writeback;
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int flock;
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int xattr;
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- const char *source;
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+ char *source;
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double timeout;
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int cache;
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int timeout_set;
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@@ -2497,9 +2497,8 @@ int main(int argc, char *argv[])
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fuse_log(FUSE_LOG_ERR, "source is not a directory\n");
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exit(1);
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}
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-
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} else {
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- lo.source = "/";
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+ lo.source = strdup("/");
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}
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if (!lo.timeout_set) {
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switch (lo.cache) {
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@@ -2570,5 +2569,7 @@ err_out1:
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close(lo.root.fd);
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}
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+ free(lo.source);
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+
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return ret ? 1 : 0;
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}
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--
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1.8.3.1
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