From nobody Sun Feb 8 15:58:47 2026 Received: from mail-io1-f69.google.com (mail-io1-f69.google.com [209.85.166.69]) (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 353F920102B for ; Tue, 21 Oct 2025 06:49:15 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.69 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761029356; cv=none; b=iJR0Ugb1AmKolWcnhCiz86uB0V440QSSDnvO+iv9wW2DCoiIW4tDn7+CwjKkoZ3ap+IidkTtB4IzviWr0Rh2Rdlg/mGF49bk0EmvFdIk5t1c7BtD0etH6T1tv7WRU/l8xhx1wBy7KZt/CgPSVoJBJ3K7ViQ8aPsRSRjolJGiIKM= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761029356; c=relaxed/simple; bh=n4EMDB/ZMPHENqLOwGAWF2w+rg3IcAIiCaSmBurHBwM=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=qKSNjlgidNdjMM25j3z+WxVGSiffMXs0fbY/W34z6yHjaNTZ6AebYP6wuiaoieiRkOhfc0Ssyf7mcj0ZdvfJIjGN//NXiLQ9Cm4AR3HQFeVg6F8r785aSXE3hpz/srb90tz/zi/eSh6XqbZpdxdS3HOrQn84ZlspsGYoyWYUPaY= 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=209.85.166.69 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-io1-f69.google.com with SMTP id ca18e2360f4ac-93bc56ebb0aso1583305039f.0 for ; Mon, 20 Oct 2025 23:49:15 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1761029354; x=1761634154; h=to:from:subject:message-id:in-reply-to:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=9EsOh/KYs4jKZxXX9INmX/PRKRyrcZRvP6vH0nm224U=; b=Z8pg/duqPaYES6PxdBZToopI+7NVcnddEB6gFbKi1dIYQSPuzaft9gJjL0GvZQKh6M ufnX5exLEYaaJnR/UMdMjHfSei7LIf+kQu5mAsPSbpvsCKjUh9PwZ8e/bEvRNL6XP+qQ ShIlOWraIxn84pp8GGgqC5+VYQxMk+uPLgixC9doWyWULIXHrrKEkLHQcGM8xLAP5uEa JcFdyTHMmj0c1yFB/wbUQsBJBmseiKExOd9h4jn7MNJXBYbt4AqQ1m+s1TIT68EKQOwK 6L7afKWHFQgZECR/L5Mr1Ll+SHmsmqHodGYusseaI+i3J853o5SAx54qnWKq91Wo0XZI Q4vg== X-Gm-Message-State: AOJu0Yzmev6S679hnYz4RM4KaYEMwRlUfGbRa6HqJVE3guHfyC3SEjBR HrCbmTc8ibakgxMA2CmWQgJowAjca1Bjvx298E2p5C5Rnp1oJFDEs0DaKMrymAmdzs+fpVUyQNz /XULjlKXPF1BSAOhhivCe5kMwQ3cuvgxahIY5yCSKvEJuLmmFW7DWM6KjF9U= X-Google-Smtp-Source: AGHT+IFCcLriG6nBGNiOctq7QBB/lexaDmYuXS1dMmkArYmvu9FDWrkcakj7EnOiChj8K4iGG1uO0D3KlZshXIvjUme8rnnX0gyy Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6602:4899:b0:887:26b5:a581 with SMTP id ca18e2360f4ac-93e76407480mr2497532539f.12.1761029354471; Mon, 20 Oct 2025 23:49:14 -0700 (PDT) Date: Mon, 20 Oct 2025 23:49:14 -0700 In-Reply-To: <68f6a4c8.050a0220.1be48.0011.GAE@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <68f72cea.a70a0220.3bf6c6.0001.GAE@google.com> Subject: Forwarded: Re: [syzbot] [bpf?] WARNING in bpf_bprintf_prepare (3) From: syzbot To: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" For archival purposes, forwarding an incoming command email to linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com. *** Subject: Re: [syzbot] [bpf?] WARNING in bpf_bprintf_prepare (3) Author: chandna.sahil@gmail.com #syz test --- a/net/core/flow_dissector.c +++ b/net/core/flow_dissector.c @@ -1021,7 +1021,9 @@ u32 bpf_flow_dissect(struct bpf_prog *prog, struct bp= f_flow_dissector *ctx, (int)FLOW_DISSECTOR_F_STOP_AT_ENCAP); flow_keys->flags =3D flags; + preempt_disable(); result =3D bpf_prog_run_pin_on_cpu(prog, ctx); + preempt_enable(); flow_keys->nhoff =3D clamp_t(u16, flow_keys->nhoff, nhoff, hlen); flow_keys->thoff =3D clamp_t(u16, flow_keys->thoff, -- 2.50.1