linux-ext4 - Re: KASAN: slab-out-of-bounds Read in __ext4_check_dir

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Date:   Sat, 31 Mar 2018 16:05:01 -0700
From:   syzbot <syzbot+730517f1d3fbe54a17c7@...kaller.appspotmail.com>
To:     linux-ext4@...r.kernel.org, syzkaller-bugs@...glegroups.com,
        tytso@....edu
Subject: Re: KASAN: slab-out-of-bounds Read in __ext4_check_dir_entry

Hello,

syzbot has tested the proposed patch and the reproducer did not trigger  
crash:

Reported-and-tested-by:  
syzbot+730517f1d3fbe54a17c7@...kaller.appspotmail.com

Note: the tag will also help syzbot to understand when the bug is fixed.

Tested on git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git/dev  
commit
efeeadec84052f77731c1a438a0c53e8323a2931 (Sat Mar 31 00:04:11 2018 +0000)
ext4: add extra checks to ext4_xattr_block_get()

compiler: gcc (GCC) 7.1.1 20170620
Patch: https://syzkaller.appspot.com/x/patch.diff?id=6191315272335360
Kernel config:  
https://syzkaller.appspot.com/x/.config?id=-8698589779649233149


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