From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oi1-f200.google.com (mail-oi1-f200.google.com [209.85.167.200]) (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 3CB52453A5E for ; Thu, 10 Sep 2026 11:48:44 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.167.200 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789040926; cv=none; b=UUZKrKXDLLH938G+6dIjSF9plnkxE8SGC0ya3dUb/tlaC4CvFVoY1oNRsVN9GgeTF2aQesZQ5modd0Y1IfJkeWgNDbQ+Bn1UKwtmNJ9brgoA37cGAY+bdRL8QM/2aNXPZ2IlsdSThZ4JESk07fW/hHD6TWS1HrLwgym385MeniY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789040926; c=relaxed/simple; bh=GiJtBRQd0xHqR+tc6VrPEYqLqIRh8L6y/3T9gHQIV38=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=a8J9TI94uEY9i/WK6BtkHVfH0NRkWSJ6MgDZr30EdJGEKPw6myFSnMg7vY1JAh65M8NxUqxsxihlMsM6zKa6Ln6O7nFysMyF4CKNBrP7Hrd2S/hvzQ30/vZwU2wLkQONqdjy2R7vknRiTh/iMKzZmvTRlLMAPRDWb2rBVjbpH1k= 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=209.85.167.200 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-oi1-f200.google.com with SMTP id 5614622812f47-4a45b3f0bdfso10473597b6e.1 for ; Thu, 10 Sep 2026 04:48:44 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1789040924; x=1789645724; h=content-type:to:from:subject:message-id:in-reply-to:date :mime-version:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to:content-type; bh=l1xxYAesGwsl1PGA4fLjtTeL9m2ZNFbUgY1KxDeHAdM=; b=Fh+aFCl+8uk3D7D5EAl4d0NxCW4z1BW70422fsnxXgWsU5cYxAHUaUXxknkkum1ITP lB4g+LUYP7DIn0dZEqKZa7yvDb7koCCgQt3JVu+Jw0cTd7SbLkcpN0CuzhA1ZIEZo5ti 9B1my4rk+IyHs1MrjeoVnOlJ1h6SAzHDXf2mwLNjY9lUQl9vYLlrDUJFv89P1yg8YAV2 7BBwTmQaCouEH96TMVsDbnXltbLQKtYr6hKo33xUEMkaQaHvcc/OrNV8O51krieRYic/ 05cRuVRwkg9KoRERrKsHYKeV3APEJH+jrsEaUUNQpr2dv+ToSCGbk4IOr3sewhl5wNGC I4VQ== X-Gm-Message-State: AFuF++mWAcqHd6vGrhCpUOCSjv0eOsSYmyxIm7HvB50Of49Zy5dsgg6m 8NyA7Pi98tWAZwhJ9esn8dQJfgZz4JBkrPF735PwPaQh37gOJ5sXzraJoXVq24SoOn33pNSn70H w6FJySRTW65lEu9zc7Thnb6QyYnsclco3/f13vZm8DKuTkV+A9wCtEF64BU4= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6809:34b:20b0:4bd:e96e:482d with SMTP id 5614622812f47-4bde96e4ce8mr8871448b6e.42.1789040924099; Thu, 10 Sep 2026 04:48:44 -0700 (PDT) Date: Thu, 10 Sep 2026 04:48:44 -0700 In-Reply-To: <6a9dc9e7.87c06881.102b7.0007.GAE@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6aa2991c.f2639fcc.29487d.0015.GAE@google.com> Subject: Forwarded: Re: test patch From: syzbot To: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com 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: test patch Author: tahasami8@gmail.com #syz test git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c index 9c03a555a6ba..98130182e05d 100644 --- a/kernel/trace/ring_buffer.c +++ b/kernel/trace/ring_buffer.c @@ -7995,8 +7995,10 @@ int ring_buffer_map_get_reader(struct trace_buffer *buffer, int cpu) goto out; reader = rb_get_reader_page(cpu_buffer); - if (WARN_ON(!reader)) + if (!reader) { + WARN_ON(cpu_buffer->reader_page != cpu_buffer->commit_page); goto out; + } /* Check if any events were dropped */ missed_events = cpu_buffer->lost_events;