linux-kernel - Re: possible deadlock in acct_pin

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Wed, 27 Mar 2019 08:18:01 -0700
From:   syzbot <syzbot+2a73a6ea9507b7112141@...kaller.appspotmail.com>
To:     akpm@...ux-foundation.org, amir73il@...il.com,
        gregkh@...uxfoundation.org, kstewart@...uxfoundation.org,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        mark.rutland@....com, mszeredi@...hat.com, oleg@...hat.com,
        paulmck@...ux.vnet.ibm.com, syzkaller-bugs@...glegroups.com,
        tglx@...utronix.de, viro@...iv.linux.org.uk
Subject: Re: possible deadlock in acct_pin_kill

Hello,

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

Reported-and-tested-by:  
syzbot+2a73a6ea9507b7112141@...kaller.appspotmail.com

Tested on:

commit:         6c66f635 kernel/acct.c: fix locking order when switching a..
git tree:       https://github.com/amir73il/linux.git acct_pin_kill_deadlock
kernel config:  https://syzkaller.appspot.com/x/.config?x=bd771c0a1616f2b7
compiler:       gcc (GCC) 9.0.0 20181231 (experimental)

Note: testing is done by a robot and is best-effort only.