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qcow2: Free allocated snapshot table on error

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If an error occurs during qcow2_write_snapshots, the newly allocated
snapshot table clusters are leaked and should thus be freed.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Max Reitz 2013-10-09 10:51:05 +02:00 • committed by Kevin Wolf
parent 37d41f0a04
commit 9186ad9658
1 changed files with 4 additions and 0 deletions
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4
block/qcow2-snapshot.c
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@ -279,6 +279,10 @@ static int qcow2_write_snapshots(BlockDriverState *bs)
return 0; return 0;
fail: fail:
if (snapshots_offset > 0) {
qcow2_free_clusters(bs, snapshots_offset, snapshots_size,
QCOW2_DISCARD_ALWAYS);
}
return ret; return ret;
} }