linux-kernel - Re: [syzbot] [mm?] KASAN: slab-use-after-free Read in hugetlb

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Date: Mon, 10 Jun 2024 14:02:03 -0700
From: syzbot <syzbot+7fd4b85697bcf2a9daa2@...kaller.appspotmail.com>
To: akpm@...ux-foundation.org, hdanton@...a.com, linux-kernel@...r.kernel.org, 
	linux-mm@...ck.org, muchun.song@...ux.dev, syzkaller-bugs@...glegroups.com, 
	usama.anjum@...labora.com, vishal.moola@...il.com, willy@...radead.org
Subject: Re: [syzbot] [mm?] KASAN: slab-use-after-free Read in hugetlb_fault

syzbot suspects this issue was fixed by commit:

commit ed74abcd1da0244c3c3be865587dc2727148ee83
Author: Muhammad Usama Anjum <usama.anjum@...labora.com>
Date:   Fri Apr 19 11:50:27 2024 +0000

    selftests: mm: protection_keys: save/restore nr_hugepages value from launch script

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=128d1bce980000
start commit:   977b1ef51866 Merge tag 'block-6.9-20240420' of git://git.k..
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=f47e5e015c177e57
dashboard link: https://syzkaller.appspot.com/bug?extid=7fd4b85697bcf2a9daa2
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=17c667cb180000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=149278f7180000

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

#syz fix: selftests: mm: protection_keys: save/restore nr_hugepages value from launch script

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