linux-kernel - [PATCH 0/6] staging: erofs: first stage of corrupted compressed images

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Date:   Mon, 19 Aug 2019 18:34:20 +0800
From:   Gao Xiang <gaoxiang25@...wei.com>
To:     Chao Yu <yuchao0@...wei.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        <devel@...verdev.osuosl.org>, <linux-fsdevel@...r.kernel.org>
CC:     LKML <linux-kernel@...r.kernel.org>,
        <linux-erofs@...ts.ozlabs.org>, "Chao Yu" <chao@...nel.org>,
        Miao Xie <miaoxie@...wei.com>, <weidu.du@...wei.com>,
        Fang Wei <fangwei1@...wei.com>,
        Gao Xiang <gaoxiang25@...wei.com>
Subject: [PATCH 0/6] staging: erofs: first stage of corrupted compressed images

Hi all,

I have fuzzed EROFS for about a day and observed the following
issues due to corrupted compression images by my first fuzzer
(It seems ok for uncompressed images for now). Now it can survive
for 10+ minutes on my PC (Let me send out what I'm done and
I will dig it more deeply...)

All the fixes are trivial.

Note that those have dependency on EFSCORRUPTED, so for-next
is needed and I will manually backport them by hand due to
many cleanup patches...

Thanks,
Gao Xiang

Gao Xiang (6):
  staging: erofs: some compressed cluster should be submitted for
    corrupted images
  staging: erofs: cannot set EROFS_V_Z_INITED_BIT if fill_inode_lazy
    fails
  staging: erofs: add two missing erofs_workgroup_put for corrupted
    images
  staging: erofs: avoid loop in submit chains
  staging: erofs: detect potential multiref due to corrupted images
  staging: erofs: avoid endless loop of invalid lookback distance 0

 drivers/staging/erofs/zdata.c | 46 ++++++++++++++++++++++++++---------
 drivers/staging/erofs/zmap.c  |  9 +++++--
 2 files changed, 42 insertions(+), 13 deletions(-)

-- 
2.17.1