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From 05452efd7e0fb0522099ae09a396f8f97e66014a Mon Sep 17 00:00:00 2001
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From: Maxim Levitsky <mlevitsk@redhat.com>
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Date: Wed, 11 Mar 2020 10:51:47 +0000
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Subject: [PATCH 06/20] block: Fix leak in bdrv_create_file_fallback()
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RH-Author: Maxim Levitsky <mlevitsk@redhat.com>
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Message-id: <20200311105147.13208-7-mlevitsk@redhat.com>
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Patchwork-id: 94229
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O-Subject: [RHEL-AV-8.2.0 qemu-kvm PATCH v2 6/6] block: Fix leak in bdrv_create_file_fallback()
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Bugzilla: 1640894
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RH-Acked-by: Stefano Garzarella <sgarzare@redhat.com>
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RH-Acked-by: John Snow <jsnow@redhat.com>
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RH-Acked-by: Max Reitz <mreitz@redhat.com>
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From: Max Reitz <mreitz@redhat.com>
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@options is leaked by the first two return statements in this function.
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Note that blk_new_open() takes the reference to @options even on
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failure, so all we need to do to fix the leak is to move the QDict
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allocation down to where we actually need it.
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Reported-by: Coverity (CID 1419884)
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Fixes: fd17146cd93d1704cd96d7c2757b325fc7aac6fd
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("block: Generic file creation fallback")
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Signed-off-by: Max Reitz <mreitz@redhat.com>
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Message-Id: <20200225155618.133412-1-mreitz@redhat.com>
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Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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(cherry picked from commit eeea1faa099f82328f5831cf252f8ce0a59a9287)
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Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com>
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Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
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---
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block.c | 3 ++-
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1 file changed, 2 insertions(+), 1 deletion(-)
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diff --git a/block.c b/block.c
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index 3beec7f..e1a4e38 100644
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--- a/block.c
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+++ b/block.c
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@@ -600,7 +600,7 @@ static int bdrv_create_file_fallback(const char *filename, BlockDriver *drv,
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QemuOpts *opts, Error **errp)
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{
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BlockBackend *blk;
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- QDict *options = qdict_new();
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+ QDict *options;
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int64_t size = 0;
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char *buf = NULL;
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PreallocMode prealloc;
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@@ -623,6 +623,7 @@ static int bdrv_create_file_fallback(const char *filename, BlockDriver *drv,
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return -ENOTSUP;
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}
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+ options = qdict_new();
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qdict_put_str(options, "driver", drv->format_name);
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blk = blk_new_open(filename, NULL, options,
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--
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1.8.3.1
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