linux-kernel - Re: [syzbot] [mm?] kernel BUG in filemap_unaccount

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Message-ID: <000000000000ef7be4061f99da2f@google.com>
Date: Tue, 13 Aug 2024 17:32:03 -0700
From: syzbot <syzbot+17a207d226b8a5fb0fd9@...kaller.appspotmail.com>
To: airlied@...hat.com, akpm@...ux-foundation.org, christian.koenig@....com, 
	daniel@...ll.ch, david@...hat.com, dri-devel@...ts.freedesktop.org, 
	fengwei.yin@...el.com, gurchetansingh@...omium.org, hughd@...gle.com, 
	kraxel@...hat.com, linaro-mm-sig-bounces@...ts.linaro.org, 
	linaro-mm-sig@...ts.linaro.org, linux-kernel@...r.kernel.org, 
	linux-media@...r.kernel.org, linux-mm@...ck.org, sumit.semwal@...aro.org, 
	syzkaller-bugs@...glegroups.com, vivek.kasireddy@...el.com
Subject: Re: [syzbot] [mm?] kernel BUG in filemap_unaccount_folio

syzbot suspects this issue was fixed by commit:

commit 7d79cd784470395539bda91bf0b3505ff5b2ab6d
Author: Vivek Kasireddy <vivek.kasireddy@...el.com>
Date:   Mon Jun 24 06:36:13 2024 +0000

    udmabuf: use vmf_insert_pfn and VM_PFNMAP for handling mmap

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=17dad691980000
start commit:   9b6de136b5f0 Merge tag 'loongarch-fixes-6.7-1' of git://gi..
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=6ae1a4ee971a7305
dashboard link: https://syzkaller.appspot.com/bug?extid=17a207d226b8a5fb0fd9
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=15f58d67680000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=10a78c62e80000

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

#syz fix: udmabuf: use vmf_insert_pfn and VM_PFNMAP for handling mmap

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