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[70.31.27.79]) by smtp.gmail.com with ESMTPSA id r23-20020ae9d617000000b006ce5ba64e30sm2958721qkk.136.2022.10.07.15.36.31 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 07 Oct 2022 15:36:33 -0700 (PDT) Date: Fri, 7 Oct 2022 18:36:30 -0400 From: Peter Xu To: syzbot Cc: akpm@linux-foundation.org, david@redhat.com, jack@suse.cz, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, namit@vmware.com, rppt@kernel.org, syzkaller-bugs@googlegroups.com, viro@zeniv.linux.org.uk Subject: Re: [syzbot] WARNING in change_pte_range Message-ID: References: <000000000000495a9305e9dea876@google.com> <0000000000004f5d5205ea790cf0@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <0000000000004f5d5205ea790cf0@google.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Oct 07, 2022 at 03:08:22PM -0700, syzbot wrote: > syzbot has bisected this issue to: > > commit b1f9e876862d8f7176299ec4fb2108bc1045cbc8 > Author: Peter Xu > Date: Fri May 13 03:22:56 2022 +0000 > > mm/uffd: enable write protection for shmem & hugetlbfs > > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=108e8fb8880000 > start commit: 511cce163b75 Merge tag 'net-6.0-rc8' of git://git.kernel.o.. > git tree: upstream > final oops: https://syzkaller.appspot.com/x/report.txt?x=128e8fb8880000 > console output: https://syzkaller.appspot.com/x/log.txt?x=148e8fb8880000 > kernel config: https://syzkaller.appspot.com/x/.config?x=4520785fccee9b40 > dashboard link: https://syzkaller.appspot.com/bug?extid=2c2bb573a9524a95e787 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14ecac35080000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15668b38880000 > > Reported-by: syzbot+2c2bb573a9524a95e787@syzkaller.appspotmail.com > Fixes: b1f9e876862d ("mm/uffd: enable write protection for shmem & hugetlbfs") > > For information about bisection process see: https://goo.gl/tpsmEJ#bisection > #syz dup: WARNING in change_protection -- Peter Xu