linux-kernel - Re: [syzbot] [kernel?] INFO: rcu detected stall in drain_vmap_area

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: <000000000000a0708b0606766d7b@google.com>
Date:   Thu, 28 Sep 2023 19:46:15 -0700
From:   syzbot <syzbot+fc9127d4bfa8ef129f7d@...kaller.appspotmail.com>
To:     bp@...en8.de, brauner@...nel.org, dave.hansen@...ux.intel.com,
        edumazet@...gle.com, hdanton@...a.com, hpa@...or.com,
        jhs@...atatu.com, linux-kernel@...r.kernel.org,
        michal.kubiak@...el.com, mingo@...hat.com, pabeni@...hat.com,
        syzkaller-bugs@...glegroups.com, tglx@...utronix.de, x86@...nel.org
Subject: Re: [syzbot] [kernel?] INFO: rcu detected stall in drain_vmap_area_work

syzbot suspects this issue was fixed by commit:

commit 8c21ab1bae945686c602c5bfa4e3f3352c2452c5
Author: Eric Dumazet <edumazet@...gle.com>
Date:   Tue Aug 29 12:35:41 2023 +0000

    net/sched: fq_pie: avoid stalls in fq_pie_timer()

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=111ab276680000
start commit:   fdf0eaf11452 Linux 6.5-rc2
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=77b9a3cf8f44c6da
dashboard link: https://syzkaller.appspot.com/bug?extid=fc9127d4bfa8ef129f7d
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=103a7aaaa80000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=177aa662a80000

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

#syz fix: net/sched: fq_pie: avoid stalls in fq_pie_timer()

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