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vmdk: false positive of compat6 with hwversion not set 

In vmdk_co_create_opts, when it finds hw_version is undefined, it will
set it to 4, which misleading the compat6 and hwversion in
vmdk_co_do_create. Simply set hw_version to NULL after free, let
the logic in vmdk_co_do_create to decide the value of hw_version.

This bug can be reproduced by:

$ qemu-img convert -O vmdk -o subformat=streamOptimized,compat6
/home/yuchenlin/syno.qcow2 /home/yuchenlin/syno.vmdk

qemu-img: /home/yuchenlin/syno.vmdk: error while converting vmdk:
compat6 cannot be enabled with hwversion set

Signed-off-by: yuchenlin <yuchenlin@synology.com>
Message-id: 20190221110805.28239-1-yuchenlin@synology.com
Signed-off-by: Max Reitz <mreitz@redhat.com>
This commit is contained in:
yuchenlin 2019-02-21 11:08:05 +00:00 committed by Max Reitz
parent 0482098608
commit 26c9296c31
1 changed files with 1 additions and 1 deletions
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2
block/vmdk.c
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@ -2267,7 +2267,7 @@ static int coroutine_fn vmdk_co_create_opts(const char *filename, QemuOpts *opts
compat6 = qemu_opt_get_bool_del(opts, BLOCK_OPT_COMPAT6, false);
if (strcmp(hw_version, "undefined") == 0) {
g_free(hw_version);
hw_version = g_strdup("4");
hw_version = NULL;
}
fmt = qemu_opt_get_del(opts, BLOCK_OPT_SUBFMT);
zeroed_grain = qemu_opt_get_bool_del(opts, BLOCK_OPT_ZEROED_GRAIN, false);