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Message-ID: <0000000000005f9210061cba438f@google.com>
Date: Mon, 08 Jul 2024 03:56:20 -0700
From: syzbot <syzbot+c793a7eca38803212c61@...kaller.appspotmail.com>
To: linux-kernel@...r.kernel.org, syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] Re: [syzbot] [usb?] INFO: rcu detected stall in
 schedule_timeout (6)

For archival purposes, forwarding an incoming command email to
linux-kernel@...r.kernel.org, syzkaller-bugs@...glegroups.com.

***

Subject: Re: [syzbot] [usb?] INFO: rcu detected stall in schedule_timeout (6)
Author: marcello.bauer@...ements.com

#syz test: https://github.com/9elements/linux.git
test_patch_dummy_hcd_hrtimer_fix

On Thu, 2024-05-16 at 15:01 -0700, syzbot wrote:
> syzbot has bisected this issue to:
> 
> commit a7f3813e589fd8e2834720829a47b5eb914a9afe
> Author: Marcello Sylvester Bauer <sylv@...v.io>
> 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@...kaller.appspotmail.com
> Fixes: a7f3813e589f ("usb: gadget: dummy_hcd: Switch to hrtimer
> transfer scheduler")
> 
> For information about bisection process see:
> https://goo.gl/tpsmEJ#bisection


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