linux-kernel - Re: [syzbot] [mm?] WARNING in copy_hugetlb_page

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Message-ID: <0000000000005d185b0606dd1cbf@google.com>
Date:   Tue, 03 Oct 2023 22:16:33 -0700
From:   syzbot <syzbot+ec78016e3d67860eec28@...kaller.appspotmail.com>
To:     akpm@...ux-foundation.org, brauner@...nel.org, hdanton@...a.com,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-mm@...ck.org, llvm@...ts.linux.dev, mike.kravetz@...cle.com,
        muchun.song@...ux.dev, nathan@...nel.org, ndesaulniers@...gle.com,
        riel@...riel.com, syzkaller-bugs@...glegroups.com, trix@...hat.com,
        viro@...iv.linux.org.uk
Subject: Re: [syzbot] [mm?] WARNING in copy_hugetlb_page_range

syzbot has bisected this issue to:

commit 446503572dc452fc544d6898113feb0f3801477b
Author: Rik van Riel <riel@...riel.com>
Date:   Sun Oct 1 00:55:50 2023 +0000

    hugetlbfs: replace hugetlb_vma_lock with invalidate_lock

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=146c879e680000
start commit:   c9f2baaa18b5 Add linux-next specific files for 20231003
git tree:       linux-next
final oops:     https://syzkaller.appspot.com/x/report.txt?x=166c879e680000
console output: https://syzkaller.appspot.com/x/log.txt?x=126c879e680000
kernel config:  https://syzkaller.appspot.com/x/.config?x=3fe9c462fee1649f
dashboard link: https://syzkaller.appspot.com/bug?extid=ec78016e3d67860eec28
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=11e4b011680000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=11772062680000

Reported-by: syzbot+ec78016e3d67860eec28@...kaller.appspotmail.com
Fixes: 446503572dc4 ("hugetlbfs: replace hugetlb_vma_lock with invalidate_lock")

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