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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 3F3BAC98318 for ; Sat, 17 Jan 2026 09:30:30 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 1DE3F6B0005; Sat, 17 Jan 2026 04:30:29 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 18C256B0088; Sat, 17 Jan 2026 04:30:29 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 08AAC6B0089; Sat, 17 Jan 2026 04:30:29 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0012.hostedemail.com [216.40.44.12]) by kanga.kvack.org (Postfix) with ESMTP id E827B6B0005 for ; Sat, 17 Jan 2026 04:30:28 -0500 (EST) Received: from smtpin04.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay05.hostedemail.com (Postfix) with ESMTP id 65E3F588FB for ; Sat, 17 Jan 2026 09:30:28 +0000 (UTC) X-FDA: 84340935336.04.8E3E01D Received: from mail-oa1-f80.google.com (mail-oa1-f80.google.com [209.85.160.80]) by imf07.hostedemail.com (Postfix) with ESMTP id C1A234000A for ; Sat, 17 Jan 2026 09:30:26 +0000 (UTC) Authentication-Results: imf07.hostedemail.com; dkim=none; dmarc=fail reason="SPF not aligned (relaxed), No valid DKIM" header.from=appspotmail.com (policy=none); spf=pass (imf07.hostedemail.com: domain of 3sVZraQkbAF4OUVG6HHAN6LLE9.CKKCHAQOAN8KJPAJP.8KI@M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com designates 209.85.160.80 as permitted sender) smtp.mailfrom=3sVZraQkbAF4OUVG6HHAN6LLE9.CKKCHAQOAN8KJPAJP.8KI@M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1768642226; a=rsa-sha256; cv=none; b=ITBFCb8ObDrh9OovIFZRjUqkFkOHDnyH7MIv6a3qiRD7IDv23uduyWgoC5SlUN0Q4Q1OK4 PXCigJfltNaq0Qw7soCuDbghePjxuyrZwurZah8L9ZBdEeGZ7CvDrnLJI3S3PDrOrgupGl jT/GyZvWgLrCAcv1zkJo+a7BLp1HKL0= ARC-Authentication-Results: i=1; imf07.hostedemail.com; dkim=none; dmarc=fail reason="SPF not aligned (relaxed), No valid DKIM" header.from=appspotmail.com (policy=none); spf=pass (imf07.hostedemail.com: domain of 3sVZraQkbAF4OUVG6HHAN6LLE9.CKKCHAQOAN8KJPAJP.8KI@M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com designates 209.85.160.80 as permitted sender) smtp.mailfrom=3sVZraQkbAF4OUVG6HHAN6LLE9.CKKCHAQOAN8KJPAJP.8KI@M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1768642226; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:mime-version:mime-version: content-type:content-type:content-transfer-encoding:in-reply-to: references; bh=XB3GJ9jGo12ah0YoMousYr0on+EB70qgKXZwNDEX3ik=; b=g9J/UkXVuLVvsjnefFE4xnmvwPQ3ojQYyuVV0Kh6f4GZ08Pa31ReS/5TKFI+LqEcUA7SQj ik3/Iu438EHBfw4aRw9UjKvV0NL9vHD4VbtFzev/YuvfdZ9WqFPoQ/ImGp0zdeveVlun0h jJXoZpeEbMLS0R8c5BQn4NKQvPwONgw= Received: by mail-oa1-f80.google.com with SMTP id 586e51a60fabf-4040b9ea153so4182622fac.1 for ; Sat, 17 Jan 2026 01:30:26 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1768642225; x=1769247025; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=XB3GJ9jGo12ah0YoMousYr0on+EB70qgKXZwNDEX3ik=; b=N0TDVmo6St/Ngeb2AN2kfHaR9QKuECGg2eI2q8MpizXkUmtKlUWpQFbZyXe/PV8Gtg SwCQIauxhMAFCOVeuBDFChlz+P5mbvez51DBiwcuZ7C1oaXHgvoPUQFKItVNVDxtDBCb SvhaK1nBVurITqUqc2zlffrf2ufXYe/zxgN1H1S4a/DUxxfcs4gRZYtp7HJ+5NGIw2uk 7JI70tMD397z4J9T+BeXQmmU0ZcenO/Hbkpa2OR8nA7AEWR4a97Gri77fw12MIOfrye1 FgWRQERzKnr/lqUxRX/Lw4oqUoaRAeEW6pDs1qWXIUsf887OrMkuxg8FgZGCVo6waLmU 5/dg== X-Forwarded-Encrypted: i=1; AJvYcCWdzalXlikpo47tsQ3tkHMXUabLT/tnXtsjOrgQzsMaLttT5e+0aq2yQQOWoE2QLxjadgyPhxRxYg==@kvack.org X-Gm-Message-State: AOJu0Yz/Gjvo5+HiCzpr3yz6QIi9ne0Vzki2ErpVxcieWBilzri3ABaT 9ufRdKKARPGv81XNYvtxQUgl3aZv6vEfKQ+8XhbBr6u4CHu6pwXWx4o/6gsV3wA3bNfI0SDvHBX pnTbj3sNbZtuwzOCdIpCcChk6qeSV/glJfjIHBytcb7sIxiVCKmTsG7qEwxU= MIME-Version: 1.0 X-Received: by 2002:a05:6820:1689:b0:659:9a49:8de3 with SMTP id 006d021491bc7-6611891632fmr2171729eaf.37.1768642225708; Sat, 17 Jan 2026 01:30:25 -0800 (PST) Date: Sat, 17 Jan 2026 01:30:25 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <696b56b1.050a0220.3390f1.0007.GAE@google.com> Subject: [syzbot] [cgroups?] [mm?] WARNING in memcg1_swapout From: syzbot To: akpm@linux-foundation.org, cgroups@vger.kernel.org, hannes@cmpxchg.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, mhocko@kernel.org, muchun.song@linux.dev, roman.gushchin@linux.dev, shakeel.butt@linux.dev, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" X-Rspamd-Queue-Id: C1A234000A X-Rspamd-Server: rspam06 X-Stat-Signature: imtsp3ayrr6mueniucw841ws4ojqcaor X-Rspam-User: X-HE-Tag: 1768642226-191345 X-HE-Meta: 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 d9W4y5td 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 TNymlKp1 SPrTIJQp9xqu8qIsbjLg5X82JH5DAwuA21R3t6BUJN5HBrxiPSDyW+9XIWYu67YwcwOor9bgxvEYvnssc/15im+6wTBjlPpzQyU1d0PAzD6dUopokkWo5RGWuIo/DdPHST9hycy5XnVjj2PTLCoPaeLRDGGG+Qbpcj/c45hLO4BT48dbsKsWLQK4yLfpKI98sRdbN9fax8+5hSzqDtQRHTyb3yi3n4nAxPI5lYkMXxsPB5D9zvUz5e/iLVTZO4dPGvbF4FO44ULOcMF42RlQ7knoOj+phJPkhu6uunlcg/pKXyahEiiiSuI/whJr0LvtZ/K8+78tqCuyt7U7xngFrR0Q9HFVL/3tH0CxEIeaKZRxcl42+ClJNAshgxmzXcx0ufX7gccCVn0jIueUAUpGw1pKWlt7hQ5y7nb4jwEB6WCbJuAHF8iEqEIdopPo9Qa5nCE7yn1TA4Kx653TyfFAageirvNEtTpV X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Hello, syzbot found the following issue on: HEAD commit: 0f853ca2a798 Add linux-next specific files for 20260113 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=14f7259a580000 kernel config: https://syzkaller.appspot.com/x/.config?x=8d6e5303d96e21b5 dashboard link: https://syzkaller.appspot.com/bug?extid=079a3b213add54dd18a7 compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=167ef922580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=16d295fa580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/480cd223f3f6/disk-0f853ca2.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/1ca2f0dbb7cc/vmlinux-0f853ca2.xz kernel image: https://storage.googleapis.com/syzbot-assets/60a0fef5805b/bzImage-0f853ca2.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+079a3b213add54dd18a7@syzkaller.appspotmail.com ------------[ cut here ]------------ WARNING: mm/memcontrol-v1.c:642 at memcg1_swapout+0x6c2/0x8d0 mm/memcontrol-v1.c:642, CPU#0: syz.4.233/6746 Modules linked in: CPU: 0 UID: 0 PID: 6746 Comm: syz.4.233 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 RIP: 0010:memcg1_swapout+0x6c2/0x8d0 mm/memcontrol-v1.c:642 Code: 6d 5d 0d 00 0f 85 01 fa ff ff 48 89 df 48 c7 c6 a0 c3 98 8b e8 bf 8c f8 fe c6 05 77 6d 5d 0d 01 90 0f 0b 90 e9 e2 f9 ff ff 90 <0f> 0b 90 e9 eb fb ff ff 90 0f 0b 90 41 80 3c 2e 00 0f 85 d5 fe ff RSP: 0018:ffffc9000bbae718 EFLAGS: 00010002 RAX: 0000000000000004 RBX: ffffea00017e9100 RCX: ffff888021f5c150 RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffc9000b59b404 RBP: dffffc0000000000 R08: ffffc9000b59b407 R09: 1ffff920016b3680 R10: dffffc0000000000 R11: fffff520016b3681 R12: ffffea00017e9108 R13: 1ffffd40002fd220 R14: 1ffffd40002fd221 R15: ffff88805398b178 FS: 00007fdd6c81a6c0(0000) GS:ffff888125bf7000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000020000009a000 CR3: 0000000075930000 CR4: 00000000003526f0 Call Trace: __remove_mapping+0xac5/0xe30 mm/vmscan.c:764 shrink_folio_list+0x28d8/0x5320 mm/vmscan.c:1542 reclaim_folio_list+0xeb/0x4e0 mm/vmscan.c:2222 reclaim_pages+0x454/0x520 mm/vmscan.c:2259 madvise_cold_or_pageout_pte_range+0x19a0/0x1ce0 mm/madvise.c:563 walk_pmd_range mm/pagewalk.c:130 [inline] walk_pud_range mm/pagewalk.c:224 [inline] walk_p4d_range mm/pagewalk.c:262 [inline] walk_pgd_range+0x1037/0x1d30 mm/pagewalk.c:303 __walk_page_range+0x14c/0x710 mm/pagewalk.c:410 walk_page_range_vma_unsafe+0x34c/0x400 mm/pagewalk.c:714 madvise_pageout_page_range mm/madvise.c:622 [inline] madvise_pageout mm/madvise.c:647 [inline] madvise_vma_behavior+0x30c7/0x4420 mm/madvise.c:1366 madvise_walk_vmas+0x575/0xaf0 mm/madvise.c:1721 madvise_do_behavior+0x38e/0x550 mm/madvise.c:1937 do_madvise+0x1bc/0x270 mm/madvise.c:2030 __do_sys_madvise mm/madvise.c:2039 [inline] __se_sys_madvise mm/madvise.c:2037 [inline] __x64_sys_madvise+0xa7/0xc0 mm/madvise.c:2037 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xec/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fdd6b98f749 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:00007fdd6c81a038 EFLAGS: 00000246 ORIG_RAX: 000000000000001c RAX: ffffffffffffffda RBX: 00007fdd6bbe5fa0 RCX: 00007fdd6b98f749 RDX: 0000000000000015 RSI: 0000000000600000 RDI: 0000200000000000 RBP: 00007fdd6ba13f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fdd6bbe6038 R14: 00007fdd6bbe5fa0 R15: 00007ffcd3996008 --- 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 syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing. 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