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7cd4402a2b
- Qcow2 corruption fix, by Juergen Keil. - Qcow2: Release refcount table clusters after growing the refcount table, by Juergen Keil.
25 lines
826 B
C
25 lines
826 B
C
Index: qemu/block-qcow2.c
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@@ -1886,6 +1886,8 @@
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int64_t table_offset;
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uint64_t data64;
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uint32_t data32;
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+ int old_table_size;
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+ int64_t old_table_offset;
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if (min_size <= s->refcount_table_size)
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return 0;
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@@ -1931,10 +1933,14 @@
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&data32, sizeof(data32)) != sizeof(data32))
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goto fail;
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qemu_free(s->refcount_table);
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+ old_table_offset = s->refcount_table_offset;
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+ old_table_size = s->refcount_table_size;
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s->refcount_table = new_table;
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s->refcount_table_size = new_table_size;
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+ s->refcount_table_offset = table_offset;
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update_refcount(bs, table_offset, new_table_size2, 1);
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+ free_clusters(bs, old_table_offset, old_table_size * sizeof(uint64_t));
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return 0;
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fail:
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free_clusters(bs, table_offset, new_table_size2);
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