From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f200.google.com (mail-il1-f200.google.com [209.85.166.200]) (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 8CAC41AB536 for ; Mon, 14 Oct 2024 15:01:31 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.200 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728918093; cv=none; b=Qo2JWgviCObpy6L/eMYHGgArZ9fRhFh3yO9prvLXdfD9GjwYex0UVQ4o7M7TOYWE+G+1vd/qh7suLS/n3lwYJTl8KYDQ267FS/7dd4awTYP40j12W297GX+CGA3spMm87iK8maIX+8o2pMZVdc9buG5rWrdEX1oB96PuA//gWGk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728918093; c=relaxed/simple; bh=xnEoCs4aCJcKfqDw7KWoQaPJtYAi1k6pmMr8bQXzHwI=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=WmUNu/0xEo46J9bQBz1pstfCTg1RyxF6+SW3FqXC8dC5B0JEcmiA4Q7VGvViRpZZIh3nHuTvEt7sDzxZF/wOvaCvNE6XFKShbZGS5dlOYmM6kU8B6J68eu3rXWb1lc62YPAhze9ztcUG6DxEtfo9WG2gFVvGMA4bHSxuKQYqoZA= 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=209.85.166.200 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-il1-f200.google.com with SMTP id e9e14a558f8ab-3a3b506c87cso27699045ab.1 for ; Mon, 14 Oct 2024 08:01:31 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1728918090; x=1729522890; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=8I91edvz4WZSn1GQDnKkPYAHxQJB3Pe5TDwarDLBQI0=; b=aTqpsXDotv9XgygD+LCFa7mBdvwzrysDyQh02/5yo4oHWpQzAnyifNLIXizJwkqL9V 6pEE8QZQidqvRNf9n9EKMksC05qoNbTIPnXBHgaHQvJaJxY67pphfdh2Kb1FqqVas6Rv Mgg8CFKLfhr7jYzeWhYm2lDAYav65ObX+PJ7EaIi+s6HdX1ocHpc+Oa4LBQ/aLLtqFGq RJYlrcWaqEZGsucJts1KCd0lCqTX2qodtV3JU5PP5m625BItDs6BcJF2uQ+YjyhN3jY4 x4pjRpT9qyFYHSrT/Q6vSWd0LFQlmTrJCrJ9c9KOZmcDRl6jqSCZiZ2AUJ7hPVPnMOPc MZIA== X-Forwarded-Encrypted: i=1; AJvYcCWTQxyyaX5VAIh6IHU/UPCA9Vde85gLDDBivDe06Sa+MBr3EGDU8FtEJxIv00e4kLBOQxDbwAT9o6DotBs=@vger.kernel.org X-Gm-Message-State: AOJu0YyDs0/ST33F8w7i62OG7MucqkX56xpWhMAwx9oAR5hXjpYVCVrE q6lTNbWgS/JTIhK3QU5XNaQUGTCgEvdLTx6UjYpXRKq+j8CIwxGygjrBxJyP4XnAn8ErrDBPTJS NxwVi79AvLZjycJbuvB2a2oIYTPl9t1vINVpFK7zk333Zy5/5H1Cl/no= X-Google-Smtp-Source: AGHT+IGQs4aOa9WHOxB8TtDGDsTO7mUCV0KYR9IbIaV9zE0u1iXtTHeo5DCBREwK+Q5OVLUjBTNIyelEaBPvHy44RXiWRl5akkcY Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:1aa4:b0:3a0:922f:8e9a with SMTP id e9e14a558f8ab-3a3b5fb3053mr82650545ab.17.1728918088965; Mon, 14 Oct 2024 08:01:28 -0700 (PDT) Date: Mon, 14 Oct 2024 08:01:28 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <670d3248.050a0220.3e960.0064.GAE@google.com> Subject: [syzbot] [mm?] WARNING in folio_walk_start From: syzbot To: akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 36c254515dc6 Merge tag 'powerpc-6.12-4' of git://git.kerne.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=14edfb27980000 kernel config: https://syzkaller.appspot.com/x/.config?x=667b897270c8ae6 dashboard link: https://syzkaller.appspot.com/bug?extid=7d917f67c05066cec295 compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/62cbb10fcb60/disk-36c25451.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/d63f77e475bd/vmlinux-36c25451.xz kernel image: https://storage.googleapis.com/syzbot-assets/113b44f45a57/bzImage-36c25451.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+7d917f67c05066cec295@syzkaller.appspotmail.com ------------[ cut here ]------------ WARNING: CPU: 1 PID: 7022 at mm/pagewalk.c:815 folio_walk_start+0xef6/0x1160 mm/pagewalk.c:815 Modules linked in: CPU: 1 UID: 0 PID: 7022 Comm: syz.3.435 Not tainted 6.12.0-rc2-syzkaller-00307-g36c254515dc6 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:folio_walk_start+0xef6/0x1160 mm/pagewalk.c:815 Code: 90 0f 0b 90 49 81 ee 00 f0 ff 3f e9 1d f4 ff ff e8 8f b8 b1 ff 48 8b 7c 24 18 e8 85 9c 3a 09 e9 be f3 ff ff e8 7b b8 b1 ff 90 <0f> 0b 90 e9 22 f5 ff ff e8 6d b8 b1 ff 31 ff 89 ee e8 a4 ba b1 ff RSP: 0018:ffffc900096bfc80 EFLAGS: 00010287 RAX: 0000000000004c5c RBX: ffff88807bc61c98 RCX: ffffc9000a2ba000 RDX: 0000000000040000 RSI: ffffffff81db0095 RDI: 0000000000000007 RBP: 0000000000000000 R08: 0000000000000007 R09: 0000000000000000 R10: 0000000000000080 R11: 0000000000000000 R12: fff00000001fffff R13: ffffc900096bfe28 R14: 0000000000000080 R15: ffff88802f484000 FS: 00007f53545676c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c321de8 CR3: 0000000047274000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: add_folio_for_migration mm/migrate.c:2244 [inline] do_pages_move mm/migrate.c:2346 [inline] kernel_move_pages+0x619/0x15a0 mm/migrate.c:2553 __do_sys_move_pages mm/migrate.c:2567 [inline] __se_sys_move_pages mm/migrate.c:2562 [inline] __x64_sys_move_pages+0xe0/0x1c0 mm/migrate.c:2562 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f535377dff9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f5354567038 EFLAGS: 00000246 ORIG_RAX: 0000000000000117 RAX: ffffffffffffffda RBX: 00007f5353936058 RCX: 00007f535377dff9 RDX: 0000000020001100 RSI: 00000000000000d0 RDI: 0000000000000000 RBP: 00007f53537f0296 R08: 0000000000000000 R09: 0000000000000002 R10: 0000000020001140 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f5353936058 R15: 00007ffec6628d18 --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup