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[2003:cb:c730:4300:18eb:6c63:a196:d3a2]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-381ed97c976sm12316138f8f.28.2024.11.11.01.45.09 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 11 Nov 2024 01:45:09 -0800 (PST) Message-ID: <638e9672-850c-4bcd-bf5c-46a86be906f9@redhat.com> Date: Mon, 11 Nov 2024 10:45:08 +0100 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [syzbot] [kernel?] WARNING in get_pat_info To: syzbot , akpm@linux-foundation.org, bhelgaas@google.com, bp@alien8.de, dave.hansen@linux.intel.com, guohui.study@gmail.com, hpa@zytor.com, jannh@google.com, kirill.shutemov@linux.intel.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, luto@kernel.org, mingo@redhat.com, peterz@infradead.org, seanjc@google.com, syzkaller-bugs@googlegroups.com, tglx@linutronix.de, torvalds@linux-foundation.org, x86@kernel.org References: <6731a6c4.050a0220.138bd5.005e.GAE@google.com> From: David Hildenbrand Content-Language: en-US Autocrypt: addr=david@redhat.com; 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charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 11.11.24 07:40, syzbot wrote: > syzbot has bisected this issue to: > > commit 79a61cc3fc0466ad2b7b89618a6157785f0293b3 > Author: Linus Torvalds > Date: Thu Sep 12 00:11:23 2024 +0000 > > mm: avoid leaving partial pfn mappings around in error case > > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=11df65f7980000 > start commit: 7758b206117d Merge tag 'tracefs-v6.12-rc6' of git://git.ke.. > git tree: upstream > final oops: https://syzkaller.appspot.com/x/report.txt?x=13df65f7980000 > console output: https://syzkaller.appspot.com/x/log.txt?x=15df65f7980000 > kernel config: https://syzkaller.appspot.com/x/.config?x=921b01cbfd887a9b > dashboard link: https://syzkaller.appspot.com/bug?extid=16b1da89309a06cd0e3a > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=148adf40580000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1704ae30580000 > > Reported-by: syzbot+16b1da89309a06cd0e3a@syzkaller.appspotmail.com > Fixes: 79a61cc3fc04 ("mm: avoid leaving partial pfn mappings around in error case") > > For information about bisection process see: https://goo.gl/tpsmEJ#bisection > As discussed elsewhere [1], the patch [2] from Peter should fix this one. I should probably resend both VM_PAT fixes that are on the list in a single series. [1] https://lkml.kernel.org/r/262aa19c-59fe-420a-aeae-0b1866a3e36b@redhat.com [2] https://lore.kernel.org/all/20240712144244.3090089-1-peterx@redhat.com/T/#u -- Cheers, David / dhildenb