From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oa2-f1.google.com (mail-oa2-f1.google.com [74.125.231.65]) (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 55CCA51D519 for ; Mon, 7 Sep 2026 20:14:45 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=74.125.231.65 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788812086; cv=none; b=Sq6dytYtrXXy+JeLsjvw7mR6ZI/Yw4oixIq/8YZEVP8LZRbZpCiUMiOW100225H6a9tDOz2j8dQVZYSIHZfRHKzapOit6QrDVyq5dvGzYnfvbuqVxOsHSwQj5r7Xosk1p1kk2fiRYCwgTUnakz6jkTXKpb8jVyZOCeYOKCLcbHw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788812086; c=relaxed/simple; bh=7BMajE9wvPZOKedccQH9SJgeUZWmiQesI5OEOBrh9Ng=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=MyOuPOeAKY/WEyAhQzvHJx4OTVCVstTo4NjlJYBF/xg9EuQtMQkUghyOl9ilLAPAYUxUm9/kJXspyg6WolMWfstwUmFD60IodRdnZIUFZcRdCS/dWCW6obUWkqPpW4QBAnbhaFOjxwRPo5/EexfNbvoWBvK7vj7Gi71jBTWafG8= 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=74.125.231.65 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-oa2-f1.google.com with SMTP id 586e51a60fabf-4489b7aa0e7so1163379fac.1 for ; Mon, 07 Sep 2026 13:14:45 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1788812084; x=1789416884; h=content-type:to:from:subject:message-id:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to :content-type; bh=OWsr3XV5ouWAguKe6ZZXsnYGR5VI84BJ0rXLZL1hjhk=; b=dvjqT4sxXKtqcmcmkI5od5CUFz4nLVxAin8vrAIGMbvMe6RUUxad13afWGVrWiupDp DUQ0kwIhspcP98QnFm1Ff8ZYSPM+jybzXwvMHETmOrX3m7C+OTj6afetXovLeeIlbtV9 TAnQnVw/Vox1RxSUJrtUbEgTrfNKLEtbEKE12TaQBnDy9rKcJbhx6ioUIZXc0uG4mwm8 y/wtT1amkLQ40O7OAAo4L85vLJXgTNtcp1TlMKWLFYyKuqLNAkSV691qt2kb3a5DVW5O QOgOuH7RskK5j33FI0lNN2oSBluWiD+v9nhuwJE8BBIM+voaVK6NsjVInIndeYEghIOY C5Ig== X-Forwarded-Encrypted: i=1; AKwUvByqbUF3wRIDnX85CddGqbEnmzcxtqKKqMCfd83whbdSRRt3WkJOcj6ytjIPWF8XaRj3Wvqw0TjAZPBEzOE=@vger.kernel.org X-Gm-Message-State: AFuF++mAmRbU6k6+jnW7KyJ4tcZube/ulSQT2IXrVuPykq5Mja7amsdO T2FfxEaraVHAeMKC7oIT38sI+Fvq3JydQijhomg1YSWjRJ6PBmvO7hPUirQCFd3FJA//FNbWqxA hZNjen6LFReT29apzi0irWFhdtxfHXhFxdHBaKEApPpoHCVpC+j4KkRWfY+g= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:619:b0:6aa:f7ac:faf3 with SMTP id 006d021491bc7-6b6fc9d078fmr13829893eaf.19.1788812084387; Mon, 07 Sep 2026 13:14:44 -0700 (PDT) Date: Mon, 07 Sep 2026 13:14:44 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6a9f1b34.2bb5a69c.24b23c.000c.GAE@google.com> Subject: [syzbot] [bpf?] WARNING in pcpu_get_vm_areas From: syzbot To: andrii@kernel.org, ast@kernel.org, bpf@vger.kernel.org, daniel@iogearbox.net, eddyz87@gmail.com, emil@etsalapatis.com, ihor.solodrai@linux.dev, john.fastabend@gmail.com, jolsa@kernel.org, linux-kernel@vger.kernel.org, martin.lau@linux.dev, memxor@gmail.com, song@kernel.org, syzkaller-bugs@googlegroups.com, yonghong.song@linux.dev Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 8ab1afb2eb24 Merge tag 'for-7.3/dm-fixes' of git://git.ker.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=104af0f9580000 kernel config: https://syzkaller.appspot.com/x/.config?x=85bc5cc2fc7394d9 dashboard link: https://syzkaller.appspot.com/bug?extid=442828bb356b10813a47 compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44 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/d900f083ada3/non_bootable_disk-8ab1afb2.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/4767b33b6704/vmlinux-8ab1afb2.xz kernel image: https://storage.googleapis.com/syzbot-assets/aa0bdf390bbc/bzImage-8ab1afb2.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+442828bb356b10813a47@syzkaller.appspotmail.com ------------[ cut here ]------------ unlikely(ret) WARNING: mm/vmalloc.c:5110 at pcpu_get_vm_areas+0x12b1/0x56c0 mm/vmalloc.c:5110, CPU#0: syz.3.1809/13474 Modules linked in: CPU: 0 UID: 0 PID: 13474 Comm: syz.3.1809 Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 RIP: 0010:pcpu_get_vm_areas+0x12b1/0x56c0 mm/vmalloc.c:5110 Code: 08 48 83 84 24 c8 00 00 00 08 41 39 ef 0f 84 76 1b 00 00 89 6c 24 70 e9 58 fb ff ff 4c 8b bc 24 f0 00 00 00 e8 70 78 a0 ff 90 <0f> 0b 90 e8 67 78 a0 ff 8b 5c 24 70 31 ff 89 de 8d 6b ff e8 c7 72 RSP: 0018:ffffc90002ee75a0 EFLAGS: 00010287 RAX: 000000000006dea5 RBX: dffffc0000000000 RCX: ffffc90007131000 RDX: 0000000000080000 RSI: ffffffff826ac3c0 RDI: ffffffff8e6b7920 RBP: 0000000000000000 R08: 00000000ffffffff R09: fffffbfff1dffc3a R10: ffffffff8effe1d3 R11: 0000000000000000 R12: ffff888060404a90 R13: ffffe8ffff000000 R14: dffffc0000000000 R15: ffffe8ffffe00000 FS: 0000000000000000(0000) GS:ffff888096967000(0063) knlGS:00000000f544db40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 00000000f542cda4 CR3: 000000006f19b000 CR4: 0000000000352ef0 Call Trace: pcpu_create_chunk+0x275/0x750 mm/percpu-vm.c:363 pcpu_alloc_noprof+0x1923/0x1e50 mm/percpu.c:1852 bpf_map_alloc_percpu+0x9a/0xf0 kernel/bpf/syscall.c:583 bpf_array_alloc_percpu kernel/bpf/arraymap.c:39 [inline] array_map_alloc+0x553/0x750 kernel/bpf/arraymap.c:153 map_create_alloc kernel/bpf/syscall.c:1534 [inline] map_create+0x874/0x30d0 kernel/bpf/syscall.c:1644 __sys_bpf+0x12a0/0x4a30 kernel/bpf/syscall.c:6344 __do_sys_bpf kernel/bpf/syscall.c:6486 [inline] __se_sys_bpf kernel/bpf/syscall.c:6483 [inline] __ia32_sys_bpf+0xcc/0x170 kernel/bpf/syscall.c:6483 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:79 [inline] __do_fast_syscall_32+0x13a/0x8b0 arch/x86/entry/syscall_32.c:291 do_fast_syscall_32+0x32/0x70 arch/x86/entry/syscall_32.c:316 entry_SYSENTER_compat_after_hwframe+0x84/0x8e RIP: 0023:0xf705efec Code: Unable to access opcode bytes at 0xf705efc2. RSP: 002b:00000000f544d50c EFLAGS: 00000292 ORIG_RAX: 0000000000000165 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000080000000 RDX: 0000000000000050 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000292 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 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. 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