linux-kernel - Re: WARNING in percpu_ref

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:   Tue, 10 Nov 2020 19:09:05 -0800
From:   syzbot <syzbot+8c4a14856e657b43487c@...kaller.appspotmail.com>
To:     axboe@...nel.dk, ebiggers@...nel.org, hdanton@...a.com,
        io-uring@...r.kernel.org, linux-block@...r.kernel.org,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        paulmck@...nel.org, syzkaller-bugs@...glegroups.com,
        viro@...iv.linux.org.uk
Subject: Re: WARNING in percpu_ref_exit (2)

syzbot suspects this issue was fixed by commit:

commit c1e2148f8ecb26863b899d402a823dab8e26efd1
Author: Jens Axboe <axboe@...nel.dk>
Date:   Wed Mar 4 14:25:50 2020 +0000

    io_uring: free fixed_file_data after RCU grace period

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=161ea46e500000
start commit:   63849c8f Merge tag 'linux-kselftest-5.6-rc5' of git://git...
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=4527d1e2fb19fd5c
dashboard link: https://syzkaller.appspot.com/bug?extid=8c4a14856e657b43487c
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=13c30061e00000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=1251b731e00000

If the result looks correct, please mark the issue as fixed by replying with:

#syz fix: io_uring: free fixed_file_data after RCU grace period

For information about bisection process see: https://goo.gl/tpsmEJ#bisection