From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-ot1-f72.google.com (mail-ot1-f72.google.com [209.85.210.72]) (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 3D8461FCF68 for ; Mon, 4 Nov 2024 21:57:29 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.72 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730757451; cv=none; b=WGgOY492gl/H4rS9f3tJNPeYhDwn5jraTuz43mh7p0uHE4LnOrSxpVq23y6MNouOPuT0ueUQlk4WMAtMrqBS75TajqvdyMNrB7uhOwLg/VqQj9OTm60d9HG3wj9WC4ZnNGNSQeWD9FQRIxmJSWloQxn8spb58gtGads9pZDeTxk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730757451; c=relaxed/simple; bh=BP6dM1u/QxuoZfkGqHfSI4KuCY1NkXDn1oXGb0K+0uE=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=h95keje6cvW0FSPh8QppIN5pwNL3yC0f/MtOads+uOCUZXLoosn4GCdhwfVDJKXpfU3grRliBTRyYuJtZchZoRWSXqgs0a9HRjj4eybYnln9lqrYeoP+S4VKtlCbDCO1+nqYoevfPDUypI/rnJR928TqGYu/O8RGqTsV9SJMcMA= 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=209.85.210.72 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-ot1-f72.google.com with SMTP id 46e09a7af769-7180ab6e01dso3951960a34.0 for ; Mon, 04 Nov 2024 13:57:29 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1730757449; x=1731362249; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=tEYQ6Z8+FOvPGNiS0LpLO+B5sk3bgXloGhKuZU8+LRo=; b=FvOn1iPh++g/u5uiXUd7zYO8h/F8oPYx2TZIfmuKlWvd+gMpctTfP3tPUq34G8g/jr 5a4MAidxLX7uqOWsOhSVBZNlYZI42BebAR9vVpkhBFM4c8evHr761MElO9FNSgueyWoH tayhLv9L4DkZzSbLWk9V/36+XwjHGl5LByiGjmv3RCnL1ys3cHiZfsU69clLIiTAYL4N +Uelk16J89aynJHSwNyOSNW2+6mS7cD1ztAV+sjW8IfyScE7T3vds2LkaGrSTOeQLT13 jm51LiQsXZW9g8+BsRfK2KJg62Phg9/2zXPWuWKuF0KbDsBp/wQ5BXwY30UuyhBw7Psg YoWw== X-Forwarded-Encrypted: i=1; AJvYcCU913cS3NwcqgHjMYtCLBHLVkz254b3yggZSlO4chh49k1sqp/xi8PCql7t2sn9N4jNCgGRZ59N70bOS98=@vger.kernel.org X-Gm-Message-State: AOJu0YxJ1UpkK9j7ncL8rioa71XNClC8STogq9pXyaAPL2izSQ7+woHw Gm/0WW0Bp+hpOhlhvy60FeV+HLPWHkJH6ncAnvcBGOKnYxG+b9fgVkXeCQvRS7/BeLlLLX9hzbt NiGT81AmgJNCsV6oXpgjaQgBs7XTmVVwMereTAzi+H2OBLtD9jDGx7ZQ= X-Google-Smtp-Source: AGHT+IH6GWMMyRYCUrmFuvKHAyTX70xzSTKMUta55MqNs9/wSLc1NSz8PEwuhlHwVaf7/xHeMfwzFGGMZvOEWpjWSnYoXYf22loH Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6830:442b:b0:713:6f24:39b8 with SMTP id 46e09a7af769-719ca1d3facmr9788600a34.19.1730757449275; Mon, 04 Nov 2024 13:57:29 -0800 (PST) Date: Mon, 04 Nov 2024 13:57:29 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <67294349.050a0220.701a.0010.GAE@google.com> Subject: [syzbot] [mm?] WARNING in folio_update_gen 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: c88416ba074a Add linux-next specific files for 20241101 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=12634587980000 kernel config: https://syzkaller.appspot.com/x/.config?x=704b6be2ac2f205f dashboard link: https://syzkaller.appspot.com/bug?extid=e5a74963d40b07387bdf compiler: Debian clang version 15.0.6, 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/760a8c88d0c3/disk-c88416ba.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/46e4b0a851a2/vmlinux-c88416ba.xz kernel image: https://storage.googleapis.com/syzbot-assets/428e2c784b75/bzImage-c88416ba.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+e5a74963d40b07387bdf@syzkaller.appspotmail.com ------------[ cut here ]------------ WARNING: CPU: 0 PID: 85 at mm/vmscan.c:3140 folio_update_gen+0x23d/0x250 mm/vmscan.c:3140 Modules linked in: CPU: 0 UID: 0 PID: 85 Comm: kswapd0 Not tainted 6.12.0-rc5-next-20241101-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:folio_update_gen+0x23d/0x250 mm/vmscan.c:3140 Code: 00 48 3b 4c 24 60 75 2a 48 c1 e8 29 83 e0 07 ff c8 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc e8 74 c0 bf ff 90 <0f> 0b 90 e9 91 fe ff ff e8 46 9f ee 09 66 0f 1f 44 00 00 90 90 90 RSP: 0018:ffffc900020deb40 EFLAGS: 00010293 RAX: ffffffff81d5fd8c RBX: 0000000000000000 RCX: ffff88801cbb8000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc900020dec00 R08: ffffffff81d5fc19 R09: 1ffff1100d562d00 R10: dffffc0000000000 R11: ffffed100d562d01 R12: 0000000000000003 R13: 1ffff9200041bd70 R14: ffffc900020deb80 R15: ffffea0001308000 FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f7fecc34866 CR3: 00000000223a2000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: walk_pmd_range_locked+0x92b/0xf90 mm/vmscan.c:3514 walk_pmd_range mm/vmscan.c:3594 [inline] walk_pud_range+0x1f16/0x2310 mm/vmscan.c:3621 walk_p4d_range mm/pagewalk.c:259 [inline] walk_pgd_range+0x4a9/0x17e0 mm/pagewalk.c:305 __walk_page_range+0x15f/0x700 mm/pagewalk.c:412 walk_page_range_mm+0x58f/0x7c0 mm/pagewalk.c:505 walk_mm mm/vmscan.c:3665 [inline] try_to_inc_max_seq+0xdd9/0x13b0 mm/vmscan.c:3902 get_nr_to_scan mm/vmscan.c:4740 [inline] try_to_shrink_lruvec+0xb30/0xc70 mm/vmscan.c:4783 shrink_one+0x3b9/0x850 mm/vmscan.c:4832 shrink_many mm/vmscan.c:4895 [inline] lru_gen_shrink_node mm/vmscan.c:4973 [inline] shrink_node+0x37cd/0x3e60 mm/vmscan.c:5954 kswapd_shrink_node mm/vmscan.c:6783 [inline] balance_pgdat mm/vmscan.c:6975 [inline] kswapd+0x1ca9/0x3700 mm/vmscan.c:7244 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 --- 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