linux-kernel - Re: [syzbot] [mm?] general protection fault in dequeue_hugetlb_folio

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Date: Wed, 12 Jun 2024 04:58:04 -0700
From: syzbot <syzbot+569ed13f4054f271087b@...kaller.appspotmail.com>
To: airlied@...hat.com, akpm@...ux-foundation.org, kraxel@...hat.com, 
	linux-kernel@...r.kernel.org, linux-mm@...ck.org, muchun.song@...ux.dev, 
	osalvador@...e.de, syzkaller-bugs@...glegroups.com, vivek.kasireddy@...el.com
Subject: Re: [syzbot] [mm?] general protection fault in dequeue_hugetlb_folio_nodemask
 (2)

syzbot has bisected this issue to:

commit 265a5cde9462d3a816b18c6cf4f0a231f1c29d1b
Author: Vivek Kasireddy <vivek.kasireddy@...el.com>
Date:   Thu Apr 11 06:59:43 2024 +0000

    udmabuf: pin the pages using memfd_pin_folios() API

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=1617ab6a980000
start commit:   d35b2284e966 Add linux-next specific files for 20240607
git tree:       linux-next
final oops:     https://syzkaller.appspot.com/x/report.txt?x=1517ab6a980000
console output: https://syzkaller.appspot.com/x/log.txt?x=1117ab6a980000
kernel config:  https://syzkaller.appspot.com/x/.config?x=d8bf5cd6bcca7343
dashboard link: https://syzkaller.appspot.com/bug?extid=569ed13f4054f271087b
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=15eb5e86980000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=15db597e980000

Reported-by: syzbot+569ed13f4054f271087b@...kaller.appspotmail.com
Fixes: 265a5cde9462 ("udmabuf: pin the pages using memfd_pin_folios() API")

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