Re: [syzbot] [kernel?] INFO: rcu detected stall in sys_clock_nanosleep (5)

From: syzbot
Date: Thu Sep 28 2023 - 04:34:19 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=12958976680000
start commit: 6709d4b7bc2e net: nfc: Fix use-after-free caused by nfc_ll..
git tree: net
kernel config: https://syzkaller.appspot.com/x/.config?x=2cbd298d0aff1140
dashboard link: https://syzkaller.appspot.com/bug?extid=43cc00d616820666f675
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=10858fc0a80000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=14781270a80000

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