From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oo1-f80.google.com (mail-oo1-f80.google.com [209.85.161.80]) (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 9131E38656D for ; Fri, 12 Jun 2026 18:10:24 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.161.80 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781287827; cv=none; b=KurSZp1vm7VJkTSYPlcnoAz4fnHWfKON1lay9KfNe7WagtAiWj39D0jgHPA3DfBW/SYrz8iEcLL3pfca3quS0n+bSxytPTE/3gHCQiFA/XWn1TsUs9gVM7pH7IM2R7uOXTdJjxGO3kVoEzU76oCB8JwPywSZJE0Rvp12j32fNtM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781287827; c=relaxed/simple; bh=N2zfrm2RZBpyh8mWfRg0WR4Tmq9kigO2u+3wgktASjQ=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=D8ef9WVKD4fvb/xxGVwo+9ht6V/rzopq2Yq5jySYX+rC55Bk9scrc0KYXLIZ5WGWyIvJK5lt1GtRgNaUi9PFRzmrBK+7i4pWGZSJ1MAjMjiTlIM87c4rzv6FAyFuz7qqMyycfNHoMWYeet7icCjtwkTvPfPY+w9RvdNKLf27NO8= 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=209.85.161.80 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-oo1-f80.google.com with SMTP id 006d021491bc7-69de23f28d5so1625751eaf.2 for ; Fri, 12 Jun 2026 11:10:24 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1781287823; x=1781892623; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=qBdH7A+9vff8Iw3ENWDnHLi07KiHWow347LA45AfBJk=; b=iISH81n+9FjaGt1hX3O91vrscYf4Wutmc7AmRCBJ51RH9P4T+6O+X3GZGF8Opq/OlO VkZTUJn+7ANbgC8f8tPw2U+i4iqlo6+gPbQUqRv2/53jeaqL9LQQLiioD85vPGD0d94V xqivs5PCOPcIMGLEFzebZWGZ329PMBtHHPWi2EFG5Stxdh8ViFC7o7TBNVcmDS3mcyi8 xrro0/IE29XAIAm+wKhM4sLAmtCMepadnlAsCMUdBkLjTifENBPjPtAcywCQKxXZCedL 9tw6SAdfgFkylQw+IVSJAmN2im9TgLgXNJbnNtnzUo7ZnBEMvcOELoj4bIJPeuSjpVl4 9+hw== X-Forwarded-Encrypted: i=1; AFNElJ8VjwCX5EAjL0WstN5NOOiKzYCOzZK9WZ3j88zYpc90p/9tt+QUnhQSTG2tOs1RL2rzVee4o5T01oqEEnY=@vger.kernel.org X-Gm-Message-State: AOJu0Yx/nJuiPamc3aEulLnC+nv/K8pB7YO4qhT7SEYVUubls6VLowmw yqWIR2rBhKMOwV0prDKFRyJQLm+dgziZ6u+Fx4yoSwNLOcZuk5vB79IJ0sjRmhenlDcCBOJmYnx M8mX7BvAaoF3/RXT666+x7OWgvT+RSsxvmD2/LbDsinCNox4D4Nf1S+9tR9c= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:906:b0:69e:b8:ffe5 with SMTP id 006d021491bc7-69edc758916mr2668793eaf.38.1781287823452; Fri, 12 Jun 2026 11:10:23 -0700 (PDT) Date: Fri, 12 Jun 2026 11:10:23 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6a2c4b8f.be3f099c.2836ae.0001.GAE@google.com> Subject: [syzbot] [kernel?] WARNING in update_curr_idle From: syzbot To: bp@alien8.de, dave.hansen@linux.intel.com, hpa@zytor.com, linux-kernel@vger.kernel.org, mingo@redhat.com, syzkaller-bugs@googlegroups.com, tglx@kernel.org, x86@kernel.org Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: ec039126b7fa Add linux-next specific files for 20260611 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=14d128ae580000 kernel config: https://syzkaller.appspot.com/x/.config?x=5aaa5302b37e7e10 dashboard link: https://syzkaller.appspot.com/bug?extid=e671c2192fed8645642e compiler: Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/4f58c704a9e9/disk-ec039126.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/bf67100d5618/vmlinux-ec039126.xz kernel image: https://storage.googleapis.com/syzbot-assets/bf93fe076f41/bzImage-ec039126.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+e671c2192fed8645642e@syzkaller.appspotmail.com ------------[ cut here ]------------ rq->clock_update_flags < RQCF_ACT_SKIP WARNING: kernel/sched/sched.h:1792 at assert_clock_updated kernel/sched/sched.h:1792 [inline], CPU#1: swapper/1/0 WARNING: kernel/sched/sched.h:1792 at rq_clock_task kernel/sched/sched.h:1806 [inline], CPU#1: swapper/1/0 WARNING: kernel/sched/sched.h:1792 at update_curr_idle+0x1cf/0x260 kernel/sched/idle.c:554, CPU#1: swapper/1/0 Modules linked in: CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Tainted: G L syzkaller #0 PREEMPT_{RT,(full)} Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 RIP: 0010:assert_clock_updated kernel/sched/sched.h:1792 [inline] RIP: 0010:rq_clock_task kernel/sched/sched.h:1806 [inline] RIP: 0010:update_curr_idle+0x1cf/0x260 kernel/sched/idle.c:554 Code: e8 03 42 80 3c 20 00 74 08 48 89 df e8 3a 98 97 00 48 8b 3b 4c 89 f6 4c 89 fa 5b 41 5c 41 5d 41 5e 41 5f 5d e9 52 38 01 00 90 <0f> 0b 90 e9 01 ff ff ff 90 0f 0b 90 e9 d3 fe ff ff 48 c7 c1 40 84 RSP: 0018:ffffc900001e7bf8 EFLAGS: 00010097 RAX: 0000000000000000 RBX: ffff8880b873ba40 RCX: 0000000000000002 RDX: ffff888037668000 RSI: ffffffff8d8bd52f RDI: ffffffff8baa5680 RBP: ffffc900001e7e30 R08: ffff8880b873c91f R09: 0000000000000000 R10: ffff8880b873c910 R11: ffffffff8199c020 R12: dffffc0000000000 R13: ffffffff8d8f3158 R14: ffff88801da9dd00 R15: ffff8880b873c620 FS: 0000000000000000(0000) GS:ffff888125fb8000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c42f07e CR3: 0000000040078000 CR4: 00000000003526f0 Call Trace: put_prev_task_idle+0xd/0x20 kernel/sched/idle.c:485 put_prev_set_next_task kernel/sched/sched.h:2769 [inline] pick_next_task kernel/sched/core.c:6442 [inline] __schedule+0x3da0/0x5550 kernel/sched/core.c:7143 schedule_idle+0x51/0x90 kernel/sched/core.c:7348 do_idle+0x4a6/0x540 kernel/sched/idle.c:384 cpu_startup_entry+0x43/0x60 kernel/sched/idle.c:454 start_secondary+0x101/0x110 arch/x86/kernel/smpboot.c:312 common_startup_64+0x13e/0x157 --- 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