linux-kernel - Re: WARNING in ep_poll

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]

Message-ID: <0000000000008f34570583d15823@google.com>
Date:   Mon, 11 Mar 2019 06:14:00 -0700
From:   syzbot <syzbot+aea82bf9ee6ffd9a79d9@...kaller.appspotmail.com>
To:     akpm@...ux-foundation.org, dbueso@...e.de, dvyukov@...gle.com,
        jbaron@...mai.com, linux-fsdevel@...r.kernel.org,
        linux-kernel@...r.kernel.org, paulmck@...ux.vnet.ibm.com,
        rpenyaev@...e.de, sfr@...b.auug.org.au,
        syzkaller-bugs@...glegroups.com, viro@...iv.linux.org.uk
Subject: Re: WARNING in ep_poll_callback

syzbot has bisected this bug to:

commit f92cacf118171208f62519d92502a8dd0341286d
Author: Roman Penyaev <rpenyaev@...e.de>
Date:   Tue Jan 8 01:15:44 2019 +0000

     epoll: loosen irq safety in ep_poll_callback()

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=107ae15f200000
start commit:   f92cacf1 epoll: loosen irq safety in ep_poll_callback()
git tree:       linux-next
final crash:    https://syzkaller.appspot.com/x/report.txt?x=127ae15f200000
console output: https://syzkaller.appspot.com/x/log.txt?x=147ae15f200000
kernel config:  https://syzkaller.appspot.com/x/.config?x=1521b074ff5a5bdf
dashboard link: https://syzkaller.appspot.com/bug?extid=aea82bf9ee6ffd9a79d9
userspace arch: amd64
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=1776034b400000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=14c2e580c00000

Reported-by: syzbot+aea82bf9ee6ffd9a79d9@...kaller.appspotmail.com
Fixes: f92cacf1 ("epoll: loosen irq safety in ep_poll_callback()")