linux-kernel - Re: [syzbot] [kernel?] KASAN: slab-out-of-bounds Read in change_page_attr_set

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Message-ID: <691e3751.a70a0220.d98e3.001d.GAE@google.com>
Date: Wed, 19 Nov 2025 13:32:01 -0800
From: syzbot <syzbot+e34177f6091df113ef20@...kaller.appspotmail.com>
To: akpm@...ux-foundation.org, bp@...en8.de, chandna.linuxkernel@...il.com, 
	dave.hansen@...el.com, dave.hansen@...ux.intel.com, hpa@...or.com, 
	kas@...nel.org, kevin.brodsky@....com, linux-kernel@...r.kernel.org, 
	luto@...nel.org, mingo@...hat.com, nooraineqbal@...il.com, 
	peterz@...radead.org, riel@...riel.com, rppt@...nel.org, 
	syzkaller-bugs@...glegroups.com, tglx@...utronix.de, x86@...nel.org, 
	yu-cheng.yu@...el.com
Subject: Re: [syzbot] [kernel?] KASAN: slab-out-of-bounds Read in change_page_attr_set_clr

syzbot suspects this issue was fixed by commit:

commit f25785f9b088ed65089dd0d0034da52858417839
Author: Rik van Riel <riel@...riel.com>
Date:   Mon Oct 6 03:48:05 2025 +0000

    x86/mm: Fix overflow in __cpa_addr()

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=16011b32580000
start commit:   f406055cb18c Merge tag 'arm64-fixes' of git://git.kernel.o..
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=af9170887d81dea1
dashboard link: https://syzkaller.appspot.com/bug?extid=e34177f6091df113ef20
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=173dda14580000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=126ab52f980000

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

#syz fix: x86/mm: Fix overflow in __cpa_addr()

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