linux-kernel - Re: WARNING: refcount bug in chrdev

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] [day] [month] [year] [list]

Message-ID: <CAAeHK+y2u21FB1HYvEZLPWVP11CkurALx0wORooXs6aAVje8XA@mail.gmail.com>
Date:   Tue, 14 Jan 2020 13:47:26 +0100
From:   Andrey Konovalov <andreyknvl@...gle.com>
To:     syzbot <syzbot+1c85a21f1c6bc88eb388@...kaller.appspotmail.com>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-fsdevel@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>,
        syzkaller-bugs <syzkaller-bugs@...glegroups.com>,
        Alexander Viro <viro@...iv.linux.org.uk>,
        Will Deacon <will@...nel.org>
Subject: Re: WARNING: refcount bug in chrdev_open

On Mon, Jan 13, 2020 at 9:02 PM syzbot
<syzbot+1c85a21f1c6bc88eb388@...kaller.appspotmail.com> wrote:
>
> syzbot suspects this bug was fixed by commit:
>
> commit 68faa679b8be1a74e6663c21c3a9d25d32f1c079
> Author: Will Deacon <will@...nel.org>
> Date:   Thu Dec 19 12:02:03 2019 +0000
>
>      chardev: Avoid potential use-after-free in 'chrdev_open()'
>
> bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=14412659e00000
> start commit:   81b6b964 Merge branch 'master' of git://git.kernel.org/pub..
> git tree:       upstream
> kernel config:  https://syzkaller.appspot.com/x/.config?x=d98e4bd76baeb821
> dashboard link: https://syzkaller.appspot.com/bug?extid=1c85a21f1c6bc88eb388
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=147ad0a6e00000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=15483312e00000
>
> If the result looks correct, please mark the bug fixed by replying with:
>
> #syz fix: chardev: Avoid potential use-after-free in 'chrdev_open()'

#syz fix: chardev: Avoid potential use-after-free in 'chrdev_open()'

>
> For information about bisection process see: https://goo.gl/tpsmEJ#bisection
>
> --
> You received this message because you are subscribed to the Google Groups "syzkaller-bugs" group.
> To unsubscribe from this group and stop receiving emails from it, send an email to syzkaller-bugs+unsubscribe@...glegroups.com.
> To view this discussion on the web visit https://groups.google.com/d/msgid/syzkaller-bugs/000000000000d80d1a059c0af28a%40google.com.