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

From: syzbot

Date: Wed Nov 19 2025 - 16:32:02 EST


syzbot suspects this issue was fixed by commit:

commit f25785f9b088ed65089dd0d0034da52858417839
Author: Rik van Riel <riel@xxxxxxxxxxx>
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