a5fff8d4b4
qcow2_inc_refcounts_imrt() (through realloc_refcount_array()) can eat an unpredictable amount of memory on corrupted table entries, which are referencing regions far beyond the end of file. Prevent this, by skipping such regions from further processing. Interesting that iotest 138 checks exactly the behavior which we fix here. So, change the test appropriately. Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Message-id: 20190227131433.197063-3-vsementsov@virtuozzo.com Signed-off-by: Max Reitz <mreitz@redhat.com>
13 lines
469 B
Plaintext
13 lines
469 B
Plaintext
QA output created by 138
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=== Check on an image with a multiple of 2^32 clusters ===
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Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=512
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wrote 512/512 bytes at offset 0
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512 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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ERROR: counting reference for region exceeding the end of the file by one cluster or more: offset 0x80000000000000 size 0x200
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1 errors were found on the image.
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Data may be corrupted, or further writes to the image may corrupt it.
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*** done
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