From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-io1-f70.google.com (mail-io1-f70.google.com [209.85.166.70]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C3AFA13CFA3 for ; Thu, 8 Aug 2024 05:20:04 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.70 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723094406; cv=none; b=ri0+9aVLTjoOSOAWFYZPlTeU2xk5rh+45nRfWb71cE0JrWf0Yac/0x9HGAR5lt9KB1u6OjmcRhQhj1o+x1cNHYKiPfduCPo87os63iw+tqEane8XJxx+dJLbcaxfpX8m148Ee6x+A9TEmRW2h2uHGACyOm4OtVe/HUXHJu1WlRg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723094406; c=relaxed/simple; bh=5fs52SLgd/Wa9Qk6AnGY2MINv0qRxrKfG2vAjMob6wo=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=rH7nfgFpidzt4HScX/Qgz4V2N8xpKBPv6jYkNUoGoQ1irSfQ/rB1uWHkj0U2wBa2j5z3N+M02j8DWHGvspin9UGSicpHAB+5SYe3OXXSWfW4yjH0AwXhxiApW38+e/zYlBTmFj4fNjSodUuijjecQobENvGY/1tDlISH7hs4PTU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; arc=none smtp.client-ip=209.85.166.70 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com Received: by mail-io1-f70.google.com with SMTP id ca18e2360f4ac-8223aed779aso68806539f.1 for ; Wed, 07 Aug 2024 22:20:04 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1723094404; x=1723699204; h=to:from:subject:message-id:in-reply-to:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=n/8Sl/8wtZuOpXGHi6WNR/MUTmmUjWmBACkoHV+PUDs=; b=B/ARTTsy0mS0fxY9QWoV9HpF4caESivcS01yUlz9J9HwvT+IP0cipGbvf6Ckp6z5lu 4/1/8pgTfzN4li0ZrJ7LG6xTTBehSyf0IIkUj2VkAngWLFsY/ykUf/p+D7Efgcks7S9z xkoeyX/Sfheug/40/OyXOtqIupvrq3CE6YTj3M7vyfbyscsHTNYTPPc4CH+P5hGVRCgv F9UIxBAB+rhBxdpvsBby11fdCzs6rr/z09lB/OdbNJPBCa114O4ankhD4zDbhsQ4RwyF Z34ARxDBzyIB1h/GRBu6apOt/j3oX8EEhhGl2/7Y9VA3MNuE/pLLIMwC894DlDDrvZUX J5Eg== X-Forwarded-Encrypted: i=1; AJvYcCXQ1Syl1fUArX2UB/ABWXpkCrWICL0nnrRQLrG3XSFikI4yJiVtZTqWee3vNE139J0DJTqGZEotY2G9TH3C8cUGJJXOuVuX19llgxEYrQ== X-Gm-Message-State: AOJu0YyxC4LidcfkSt2p3QcMk7yzkqCpdIm35au7orerTvFEVEjCFcPu VHlsTCOhJ5ygFyy1nvW5wByiXul5nj+9QpSSgmVqbMt3yTYFyfQlq2yZ4vznx+esihLFV6fZkBu 3BH7mFWvAmNxiwlksXt1MzykmDaAVQP5iJIjQnnJRH7XBRDoBy7VvBn4= X-Google-Smtp-Source: AGHT+IF7GD4v7lHspJC+Jfs24j4tamRlFwZl1OSJoLkUDwS5Ibf9MNjk30+Z0IWeFZHASh3iI8qbJOSsalcz40AT5pDGZk+0wk7E Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6638:130b:b0:4c2:7a26:278b with SMTP id 8926c6da1cb9f-4ca5e153b10mr47876173.5.1723094403922; Wed, 07 Aug 2024 22:20:03 -0700 (PDT) Date: Wed, 07 Aug 2024 22:20:03 -0700 In-Reply-To: <000000000000f52642060d4e3750@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000dc521a061f252d4c@google.com> Subject: Re: [syzbot] [fs?] BUG: unable to handle kernel NULL pointer dereference in do_pagemap_scan From: syzbot To: akpm@linux-foundation.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, lizhi.xu@windriver.com, seanjc@google.com, syzkaller-bugs@googlegroups.com, usama.anjum@collabora.com Content-Type: text/plain; charset="UTF-8" syzbot suspects this issue was fixed by commit: commit 4cccb6221cae6d020270606b9e52b1678fc8b71a Author: Muhammad Usama Anjum Date: Tue Jan 9 11:24:42 2024 +0000 fs/proc/task_mmu: move mmu notification mechanism inside mm lock bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=141753f9980000 start commit: fbafc3e621c3 Merge tag 'for_linus' of git://git.kernel.org.. git tree: upstream kernel config: https://syzkaller.appspot.com/x/.config?x=298e57794135adf0 dashboard link: https://syzkaller.appspot.com/bug?extid=f9238a0a31f9b5603fef syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1108a595e80000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=16777bbee80000 If the result looks correct, please mark the issue as fixed by replying with: #syz fix: fs/proc/task_mmu: move mmu notification mechanism inside mm lock For information about bisection process see: https://goo.gl/tpsmEJ#bisection