From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 24087CCA470 for ; Wed, 1 Oct 2025 21:48:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Type:To:From:Subject :Message-ID:Date:MIME-Version:Reply-To:Cc:Content-Transfer-Encoding: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Owner; bh=1xa3U68yYOKHDPpIJxyjQuvshkNBKqLyHda+ZM1Ox+M=; b=XRp/T3TonAj9SOWUPnos26xhhN cc4X0k1vonq2ovk+hgavhKmHMHEPqTtF8htt9skN8c+UVgrrO9dJPPYh9NCq4iRoUiVOrdOwHpCtR 0wZMTipZlDST3NQM77p452SUOXQuXr7M83hZbYlYTEZLg9oGdaPdSpqiKC4LV6DbQSwlLrGjRHDwf y6aDfj/hTCc+LdiRqETDqbF2mSb+01d0BFwrNUPJn6T5sZmvlpcBEFW0eXCsZWHTS6R/AnhVpzdEv T3Pk9tLFxdWdIl0FJMdP1Ur8Onds/wkdHxvXsywto+XP+bvWeOJqd3c7VFsq9pSUcH2rzDyMTvSgU bYFEvzyg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1v44gd-000000095Ov-2iRV; Wed, 01 Oct 2025 21:48:35 +0000 Received: from mail-il1-f208.google.com ([209.85.166.208]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1v44ga-000000095Ob-2t22 for linux-arm-kernel@lists.infradead.org; Wed, 01 Oct 2025 21:48:33 +0000 Received: by mail-il1-f208.google.com with SMTP id e9e14a558f8ab-42d8a33a27aso8406465ab.2 for ; Wed, 01 Oct 2025 14:48:31 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1759355311; x=1759960111; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=1xa3U68yYOKHDPpIJxyjQuvshkNBKqLyHda+ZM1Ox+M=; b=newtKMjQbd+TjEioNz/cHIgaTF2847SXPoNu9LAe4ID/sNyJTg4Sqm1x5oVbRTIn5M dx3pK+YUw1ain4pRSBy203wGe7TmTJHdlheBkS/3XjkryUtKyy5LZDOB1smTKjdtE2zq ty1zhhipwiGC/G0FZYD9PzrSs8yaoDZorQZ8xsbk5avbrCfjzcIrJlyFGZfXMUmAerSe OVgCzJTG9Mk6eE1xvaNV/+dCvzYXqolqgakACuGucLGUY7dUB5G0xuj6BvqT/5R+F44u 8f3wPhcSQPyHk8PmjNxk9u2KRHxCKJnkrfbvNvkB89Qma32kSfE+JhnUWmed2it1hx40 tJ/Q== X-Forwarded-Encrypted: i=1; AJvYcCV6fzmO4eUd3iyOlCJVbcezDkYVpgCRLlC2bAhNCKSy5iWY+X5WXqSItAuEAiWr7PmE2bzlxhXg6RvX4avNJyrf@lists.infradead.org X-Gm-Message-State: AOJu0Yy1SGYS0QxhlxLGMElZul4AKCHCSvVcjxBRMmJy+ah1qdmpTbjI fAPdotsZ0j3uPmmVnNyf0d4nfUcxkQVAZSpFfaXdzAv7I4BpqYKmLlZ5oTqgPSTCJ3sEtbPVl2X gHxXPF2UBuN+jvGqKZGU1qKDGJFXbjRIZynpAV8HUIJEhTPdY1syaQTWP39s= X-Google-Smtp-Source: AGHT+IE5wIakhy9YKOvGa4bItMlG+QqKT5ISj5Gtsed52/sYxurOGRNJvjOCqe0+edpB/pU6Trd6c1gaRWScAELTJYj6aQy/Ow/o MIME-Version: 1.0 X-Received: by 2002:a05:6e02:1aa7:b0:428:f19b:2947 with SMTP id e9e14a558f8ab-42d8159ea64mr82287515ab.6.1759355310914; Wed, 01 Oct 2025 14:48:30 -0700 (PDT) Date: Wed, 01 Oct 2025 14:48:30 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <68dda1ae.a00a0220.102ee.0065.GAE@google.com> Subject: [syzbot] [arm?] WARNING in copy_highpage From: syzbot To: catalin.marinas@arm.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com, will@kernel.org Content-Type: text/plain; charset="UTF-8" X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20251001_144832_732813_27F247FB X-CRM114-Status: UNSURE ( 8.21 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hello, syzbot found the following issue on: HEAD commit: fec734e8d564 Merge tag 'riscv-for-linus-v6.17-rc8' of git:.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=12187d34580000 kernel config: https://syzkaller.appspot.com/x/.config?x=13bd892ec3b155a2 dashboard link: https://syzkaller.appspot.com/bug?extid=d1974fc28545a3e6218b compiler: aarch64-linux-gnu-gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 userspace arch: arm64 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/fa3fbcfdac58/non_bootable_disk-fec734e8.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/d7e18b408aea/vmlinux-fec734e8.xz kernel image: https://storage.googleapis.com/syzbot-assets/9b7984f47117/Image-fec734e8.gz.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+d1974fc28545a3e6218b@syzkaller.appspotmail.com ------------[ cut here ]------------ WARNING: CPU: 1 PID: 25189 at arch/arm64/mm/copypage.c:55 try_page_mte_tagging arch/arm64/include/asm/mte.h:93 [inline] WARNING: CPU: 1 PID: 25189 at arch/arm64/mm/copypage.c:55 copy_highpage+0x150/0x334 arch/arm64/mm/copypage.c:55 Modules linked in: CPU: 1 UID: 0 PID: 25189 Comm: syz.2.7336 Not tainted syzkaller #0 PREEMPT Hardware name: linux,dummy-virt (DT) pstate: 00402009 (nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : copy_highpage+0x150/0x334 arch/arm64/mm/copypage.c:55 lr : copy_highpage+0xb4/0x334 arch/arm64/mm/copypage.c:25 sp : ffff800088053940 x29: ffff800088053940 x28: ffffc1ffc0acf800 x27: ffff800088053b10 x26: ffffc1ffc0acf808 x25: ffffc1ffc037b1c0 x24: ffffc1ffc037b1c0 x23: ffffc1ffc0acf800 x22: ffffc1ffc0acf800 x21: fff000002b3e0000 x20: fff000000dec7000 x19: ffffc1ffc037b1c0 x18: 0000000000000000 x17: fff07ffffcffa000 x16: ffff800080008000 x15: 0000000000000001 x14: 0000000000000000 x13: 0000000000000003 x12: 000000000006d9ad x11: 0000000000000000 x10: 0000000000000010 x9 : 0000000000000000 x8 : 0000000000000000 x7 : 0000000000000000 x6 : 0000000000000000 x5 : ffff800088053b18 x4 : ffff80008032df94 x3 : 00000000ff000000 x2 : 01ffc00003000001 x1 : 01ffc00003000001 x0 : 01ffc00003000001 Call trace: try_page_mte_tagging arch/arm64/include/asm/mte.h:93 [inline] (P) copy_highpage+0x150/0x334 arch/arm64/mm/copypage.c:55 (P) copy_mc_highpage include/linux/highmem.h:383 [inline] folio_mc_copy+0x44/0x6c mm/util.c:740 __migrate_folio.constprop.0+0xc4/0x23c mm/migrate.c:851 migrate_folio+0x1c/0x2c mm/migrate.c:882 move_to_new_folio+0x58/0x144 mm/migrate.c:1097 migrate_folio_move mm/migrate.c:1370 [inline] migrate_folios_move mm/migrate.c:1719 [inline] migrate_pages_batch+0xaf4/0x1024 mm/migrate.c:1966 migrate_pages_sync mm/migrate.c:2023 [inline] migrate_pages+0xb9c/0xcdc mm/migrate.c:2105 do_mbind+0x20c/0x4a4 mm/mempolicy.c:1539 kernel_mbind mm/mempolicy.c:1682 [inline] __do_sys_mbind mm/mempolicy.c:1756 [inline] __se_sys_mbind mm/mempolicy.c:1752 [inline] __arm64_sys_mbind+0xd0/0xd8 mm/mempolicy.c:1752 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x48/0x110 arch/arm64/kernel/syscall.c:49 el0_svc_common.constprop.0+0x40/0xe0 arch/arm64/kernel/syscall.c:132 do_el0_svc+0x1c/0x28 arch/arm64/kernel/syscall.c:151 el0_svc+0x34/0x10c arch/arm64/kernel/entry-common.c:879 el0t_64_sync_handler+0xa0/0xe4 arch/arm64/kernel/entry-common.c:898 el0t_64_sync+0x1a4/0x1a8 arch/arm64/kernel/entry.S:596 ---[ end trace 0000000000000000 ]--- --- 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