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 4794D29CE7 for ; Tue, 5 Mar 2024 04:38:23 +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=1709613504; cv=none; b=G24vcf9r5nGO7Yqfam3NEsrDUDCkb/9fB6GQqID2k6NZm7+mJCIl/26T78wx+CUsdXTnXbwbmF8h+/CdrIR82gGlpHxqysy1MFkDmcshJtFmfum6y4YgftkHZw5Tt2LAn4Iuk79DaJ+DPVU74ioZimp4wZROB2Y7KIGvK2+mmpc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709613504; c=relaxed/simple; bh=ZzgSUxjd+0JMmSh5H3+cRqdQUNC4JgQpQJPxIdfeCqQ=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=kOO1fGtllqY4L2xx8TEUinzF4r+itPuUolM2B5H6+PPM58fNVN4aYOEO07ZwIIFaORnzGwpMCSMMhHcUkcoJTYvHFjiIUgYf2Fw6C9GSsviYXsHqkrz7Uv5lqqOr9+8JeRRVMVKz0IaNOTngIHLGZowMXc6sU6Bo5pUH+W5gp9g= 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-36520abf45eso58197195ab.2 for ; Mon, 04 Mar 2024 20:38:23 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1709613502; x=1710218302; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=QaaKwt8+QUYeabpyFqyQn6fckuTKQ7Ng3UILfLmGeCQ=; b=fsrVqmxAuzwLN4IA7h8Hmj1gz6ICiINyuJdFhojl/Oc1sjXLNFfA0y4Px+fk9uKUQF Ne239nFicwKvoyjTqC0ubPG+qUGPERC+9Vl6y3MB7KpbY44zWXvoylBAzRQZfcCD14Xd NtyFJxKUg/GQHR98yOGMi9rZGY2lsTCOZLNxLGeLZc/6KYX89xj+RTDEemLPrRT/dKxq f/0jPgcX9y4CP+Ew0FhtqChFo/UXNKoUxJ9hGtqLJTdlen8IzmIpAFwrVh+yC79x5vX2 icEKge8Z+/b2mFn80Jxhcs02vwLpOjy7tMcl7DNd6DuIl9+ww9sEKSxspOx3IoJ+iB53 2WpQ== X-Forwarded-Encrypted: i=1; AJvYcCXAgDB5TqVw6oUatyB5Na4qKsIOI2hulJRp0Q+0fJBPnreXReX9MtWNociGjeljUwI34ACIF1ijXyx+NmnIlZ3ULfZLD3aqLWA2sxkG X-Gm-Message-State: AOJu0YzHhPlWhs/IalOG2Mn8o8i9TUxrTWcKd9Cg1FwGSHORpulI4KYO tiDsKyLU0VuwTCMkszL717IuS7iapDmPPOdb3hggwYTnjxVTdVTV4fUxLQaIPTIkfQmVEeE5t4h A937sd5Ra+tBXEKuQkGtjQNeDsD53AIedUL/whuufxwTcJHHb95OtgfA= X-Google-Smtp-Source: AGHT+IHCgoqg0ZRF/rgkn5/xYp7wXeGBsLO9OUot0yuT0Nh5GLAkzlCPk76lxqQkSFs7z5SgUsAX0VXPvsBG6KzxbH+l9G8HPmuk 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:b26:b0:363:d7d2:1ddd with SMTP id e6-20020a056e020b2600b00363d7d21dddmr475956ilu.0.1709613502328; Mon, 04 Mar 2024 20:38:22 -0800 (PST) Date: Mon, 04 Mar 2024 20:38:22 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000827c710612e269ff@google.com> Subject: [syzbot] [mm?] WARNING in try_to_unmap_one 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: 87adedeba51a Merge tag 'net-6.8-rc7' of git://git.kernel.o.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=15359306180000 kernel config: https://syzkaller.appspot.com/x/.config?x=dc48776003e506af dashboard link: https://syzkaller.appspot.com/bug?extid=28895085dfb33190ed3c compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 userspace arch: i386 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/7bc7510fe41f/non_bootable_disk-87adedeb.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/531f9afd8b25/vmlinux-87adedeb.xz kernel image: https://storage.googleapis.com/syzbot-assets/015cfa882009/bzImage-87adedeb.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+28895085dfb33190ed3c@syzkaller.appspotmail.com ------------[ cut here ]------------ WARNING: CPU: 1 PID: 109 at arch/x86/include/asm/pgtable.h:404 pte_uffd_wp arch/x86/include/asm/pgtable.h:404 [inline] WARNING: CPU: 1 PID: 109 at arch/x86/include/asm/pgtable.h:404 try_to_unmap_one+0x1a84/0x29b0 mm/rmap.c:1891 Modules linked in: CPU: 1 PID: 109 Comm: kswapd0 Not tainted 6.8.0-rc6-syzkaller-00120-g87adedeba51a #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 RIP: 0010:pte_uffd_wp arch/x86/include/asm/pgtable.h:404 [inline] RIP: 0010:try_to_unmap_one+0x1a84/0x29b0 mm/rmap.c:1891 Code: e9 d4 00 00 00 e8 8c 72 b4 ff 4d 89 ec 31 ff 41 83 e4 02 4c 89 e6 e8 8b 6d b4 ff 4d 85 e4 0f 84 8b 04 00 00 e8 6d 72 b4 ff 90 <0f> 0b 90 e8 64 72 b4 ff 48 83 cd 04 e9 21 f9 ff ff e8 56 72 b4 ff RSP: 0018:ffffc90000ddf110 EFLAGS: 00010293 RAX: 0000000000000000 RBX: ffffea0000021240 RCX: ffffffff81d771e5 RDX: ffff88801ac80000 RSI: ffffffff81d771f3 RDI: 0000000000000007 RBP: 07ffffffffa2e20a R08: 0000000000000007 R09: 0000000000000000 R10: 0000000000000002 R11: 0000000000000004 R12: 0000000000000002 R13: 0000000000849c47 R14: dffffc0000000000 R15: ffff8880118c2f80 FS: 0000000000000000(0000) GS:ffff88802c300000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 0000000027f48000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: rmap_walk_anon+0x228/0x580 mm/rmap.c:2599 rmap_walk mm/rmap.c:2676 [inline] rmap_walk mm/rmap.c:2671 [inline] try_to_unmap+0x174/0x1c0 mm/rmap.c:1956 shrink_folio_list+0x1cc7/0x3ea0 mm/vmscan.c:1253 evict_folios+0x6e7/0x1b90 mm/vmscan.c:4521 try_to_shrink_lruvec+0x638/0xa10 mm/vmscan.c:4726 shrink_one+0x3f8/0x7b0 mm/vmscan.c:4765 shrink_many mm/vmscan.c:4828 [inline] lru_gen_shrink_node mm/vmscan.c:4929 [inline] shrink_node+0x21d0/0x3790 mm/vmscan.c:5888 kswapd_shrink_node mm/vmscan.c:6693 [inline] balance_pgdat+0x9d2/0x1a90 mm/vmscan.c:6883 kswapd+0x5be/0xc00 mm/vmscan.c:7143 kthread+0x2c6/0x3b0 kernel/kthread.c:388 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:243 --- 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