linux-kernel - Re: [syzbot] [mm?] INFO: task hung in hugetlb

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Message-ID: <68b90923.050a0220.3db4df.020e.GAE@google.com>
Date: Wed, 03 Sep 2025 20:36:03 -0700
From: syzbot <syzbot+7bb5e48f6ead66c72906@...kaller.appspotmail.com>
To: akpm@...ux-foundation.org, david@...hat.com, dvyukov@...gle.com, 
	elver@...gle.com, glider@...gle.com, kasan-dev@...glegroups.com, 
	keescook@...omium.org, linux-kernel@...r.kernel.org, linux-mm@...ck.org, 
	mcgrof@...nel.org, mhiramat@...nel.org, mhocko@...e.com, 
	mike.kravetz@...cle.com, muchun.song@...ux.dev, osalvador@...e.de, 
	syzkaller-bugs@...glegroups.com, torvalds@...ux-foundation.org, 
	vbabka@...e.cz
Subject: Re: [syzbot] [mm?] INFO: task hung in hugetlb_fault

syzbot suspects this issue was fixed by commit:

commit 2ae1ab9934c785b855583e3eabd208d6f3ac91e1
Author: Oscar Salvador <osalvador@...e.de>
Date:   Mon Jun 30 14:42:08 2025 +0000

    mm,hugetlb: change mechanism to detect a COW on private mapping

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=1289ea42580000
start commit:   87d6aab2389e Merge tag 'for_linus' of git://git.kernel.org..
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=fb6ea01107fa96bd
dashboard link: https://syzkaller.appspot.com/bug?extid=7bb5e48f6ead66c72906
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=17dd6327980000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=16d24f9f980000

If the result looks correct, please mark the issue as fixed by replying with:

#syz fix: mm,hugetlb: change mechanism to detect a COW on private mapping

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