staging: erofs: detect potential multiref due to corrupted images

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As reported by erofs-utils fuzzer, currently, multiref
(ondisk deduplication) hasn't been supported for now,
we should forbid it properly.

Fixes: 3883a79abd ("staging: erofs: introduce VLE decompression support")
Cc: <stable@vger.kernel.org> # 4.19+
Signed-off-by: Gao Xiang <gaoxiang25@huawei.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Link: https://lore.kernel.org/r/20190821140152.229648-1-gaoxiang25@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Gao Xiang 2019-08-21 22:01:52 +08:00 • committed by Greg Kroah-Hartman

parent 8467c3b456

commit e12a0ce2fa

1 changed files with 17 additions and 3 deletions

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drivers/staging/erofs/zdata.c

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