Re: [syzbot] [kernel?] INFO: rcu detected stall in drain_vmap_area_work

From: syzbot
Date: Thu Sep 28 2023 - 22:50:45 EST


syzbot suspects this issue was fixed by commit:

commit 8c21ab1bae945686c602c5bfa4e3f3352c2452c5
Author: Eric Dumazet <edumazet@xxxxxxxxxx>
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