Re: [syzbot] [mm?] INFO: rcu detected stall in sys_pipe2 (2)

syzbot has bisected this issue to:

commit d15121be7485655129101f3960ae6add40204463
Author: Paolo Abeni [off-list ref]
Date:   Mon May 8 06:17:44 2023 +0000

    Revert "softirq: Let ksoftirqd do its job"

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=1668e4b0580000
start commit:   9268abe611b0 Merge branch 'net-lan969x-add-rgmii-support'
git tree:       net-next
console output: https://syzkaller.appspot.com/x/log.txt?x=1168e4b0580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=b087c24b921cdc16
dashboard link: https://syzkaller.appspot.com/bug?extid=693a483dd6ac06c62b09
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=16e7c2f8580000

Reported-by: syzbot+693a483dd6ac06c62b09@syzkaller.appspotmail.com
Fixes: d15121be7485 ("Revert "softirq: Let ksoftirqd do its job"")

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