Re: [syzbot] [usb?] INFO: rcu detected stall in schedule_timeout (6)

From: syzbot
Date: Thu May 16 2024 - 18:01:13 EST


syzbot has bisected this issue to:

commit a7f3813e589fd8e2834720829a47b5eb914a9afe
Author: Marcello Sylvester Bauer <sylv@xxxxxxx>
Date: Thu Apr 11 14:51:28 2024 +0000

usb: gadget: dummy_hcd: Switch to hrtimer transfer scheduler

bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=119318d0980000
start commit: 75fa778d74b7 Add linux-next specific files for 20240510
git tree: linux-next
final oops: https://syzkaller.appspot.com/x/report.txt?x=139318d0980000
console output: https://syzkaller.appspot.com/x/log.txt?x=159318d0980000
kernel config: https://syzkaller.appspot.com/x/.config?x=ccdd3ebd6715749a
dashboard link: https://syzkaller.appspot.com/bug?extid=c793a7eca38803212c61
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=16dcd598980000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=151d9c78980000

Reported-by: syzbot+c793a7eca38803212c61@xxxxxxxxxxxxxxxxxxxxxxxxx
Fixes: a7f3813e589f ("usb: gadget: dummy_hcd: Switch to hrtimer transfer scheduler")

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