From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-wm1-f72.google.com (mail-wm1-f72.google.com [209.85.128.72]) (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 98FAA472F9A for ; Fri, 7 Aug 2026 13:13:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.72 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786108420; cv=none; b=CIe0wPUvRGRQcfqiXq7CI+MHto6WOJ660Fg3X8WaRzFzKA5blkXjoGMkd3W4K4RihydNc79I20rlWu5ZukANu14d2rJ5YSS7g7ffQksvdfk7udC6jzbRYFu0za/PJuF3RWogkJQR9d0wx4psd0YyJ+8U/Uhi7jc+/E0ETjTDUj0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786108420; c=relaxed/simple; bh=5d+hRQkdxu+LjRODiJUvapBBo4xPqnB4Ft+vBXpNH3w=; h=Date:Mime-Version:Message-ID:Subject:From:To:Cc:Content-Type; b=mdvjpXT5NMF6BhqAxaJbCruyHPLe87bJG4FSRevM7ULdIFm3Y4ztONZLOFzP/JJhrNrR7jjJKLnbPrq+RdFnlVeqN9sX4JHSsb0eBgd41QW0utBT1DQDpnhe3FwBCxbMo4Ud0vvER0Cd7MlniIhZS9cEtaZcS2oKCoROXpaOUJY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--pimyn.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=hdo+oygW; arc=none smtp.client-ip=209.85.128.72 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--pimyn.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="hdo+oygW" Received: by mail-wm1-f72.google.com with SMTP id 5b1f17b1804b1-4954c2d4081so25351815e9.2 for ; Fri, 07 Aug 2026 06:13:28 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20251104; t=1786108404; x=1786713204; darn=vger.kernel.org; h=content-type:cc:to:from:subject:message-id:mime-version:date:from :to:cc:subject:date:message-id:reply-to:content-type; bh=HGYHTnBNWXBO5YtuxGe140ai7SrQVWiUjgzwen/fgVg=; b=hdo+oygWe0rPzp23ojuSSEtFbTeMm7E681KX3KeFipmGfzRrNtTzybEPraxuTxUwx9 o8ZyoDq68Pj+F7ttitldpfJYMXiLSkTqa67PIAXERWnJS4+5DxkAULhnI+cE3PEY6z/L twlKWWEHbhskWq+chjmW39YFLey+0g6maDT0BQwdjIpot8LNu02ZQkEP7cRrUlAb+XsX pr4dH6WuEjx2W/5Nh3MalEpO4fgaDttiRAPseJzhmV5USkl6CEGkHkfI/M3MdayhMEMf tsIScd4NQvGmPXJOaT7HfVS372yVFYY15ZW8Hz3Te5OnKMbteFLkIknXNJq2Z5nAvS3x XAnA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1786108404; x=1786713204; h=content-type:cc:to:from:subject:message-id:mime-version:date :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to :content-type; bh=HGYHTnBNWXBO5YtuxGe140ai7SrQVWiUjgzwen/fgVg=; b=QhHqLv5TR/hk6Bt+z10oWVM9DHzql8fBIrRnax7s8YyWFapFmFbgT0rkFYVvst8YEz Mc7exJ9ytNwhwmoDMoJOB/ZRBR0iGIxj6WsnQMtgRZxKkLAKIdeKIEY9GJkpMIN0f1Gx Kj4PSKZ6+3/rvvbNkCxqh64XU60VCYX60UcRpaIyFq/F/3l0NNqLs6lra3vChaW2Szi9 dwP+2GgMGe+Pqj2VopzS+1QIIs4J4QHPIPD+/QYI0KRoelSH4s/9vYlzyI4qt0MdWIQw 8znCYLl81WvZNwnEJPphWwTDsURpvPbQr48TOMt9Bf6KDF6Uhu0o6MKmG6rMYWuq1AuX wzUg== X-Forwarded-Encrypted: i=1; AHgh+RrwrYfVDxhWvojOlZuq3nwwQGrUH4fvmd2hp8Uszjq48wRFY/TPFxJwudPd4vcvN7Zj98+FlZeJuUwoNMk=@vger.kernel.org X-Gm-Message-State: AOJu0YwR1uRbkom4g2SPkrfjgRz6QCgcdZiKJ1wQTpc3J35eiugw3zOk kL9xr0LEVO8n6IVlojcLKTBZr8Wb1qNxv1d9idpQROcXXacbYWPlnIoSEIeb1v+xQQWg4nUcyYG CVw== X-Received: from wmlz10.prod.google.com ([2002:a05:600c:220a:b0:487:3739:c5c4]) (user=pimyn job=prod-delivery.src-stubby-dispatcher) by 2002:a05:600c:840f:b0:493:cc25:85cb with SMTP id 5b1f17b1804b1-4994e71edfemr292204985e9.8.1786108403646; Fri, 07 Aug 2026 06:13:23 -0700 (PDT) Date: Fri, 7 Aug 2026 15:13:00 +0200 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 X-Mailer: git-send-email 2.55.0.654.g21b8a5bc05-goog Message-ID: <20260807131300.2677228-1-pimyn@google.com> Subject: [PATCH] ipv6: addrconf: drop "BUG: " prefix from pr_warn() From: Pimyn Girgis To: dsahern@kernel.org, idosch@nvidia.com, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com Cc: horms@kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, syzbot+ded267b328e950a7c0c4@syzkaller.appspotmail.com, Pimyn Girgis Content-Type: text/plain; charset="UTF-8" Kernel warning messages emitted via pr_warn() already have the appropriate log level (KERN_WARNING) and should not include manual prefixes such as "BUG: " or "WARNING: ". Explicit "BUG: " prefixes in log strings can mislead testing tools like syzkaller, which scan kernel console output for "BUG: " to identify kernel oopses, panics, and fatal conditions. Remove the manual "BUG: " prefix from the pr_warn() call in __ipv6_ifa_notify(). Fixes: 2d819d250a1393 ("ipv6: Handle missing host route in __ipv6_ifa_notify") Reported-by: syzbot+ded267b328e950a7c0c4@syzkaller.appspotmail.com Closes: https://syzkaller.appspot.com/bug?extid=ded267b328e950a7c0c4 Signed-off-by: Pimyn Girgis --- net/ipv6/addrconf.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c index f6fa2715b450b..8c714b4c0a9ba 100644 --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -6318,7 +6318,7 @@ static void __ipv6_ifa_notify(int event, struct inet6_ifaddr *ifp) if (ifp->rt && !rcu_access_pointer(ifp->rt->fib6_node)) { ip6_ins_rt(net, ifp->rt); } else if (!ifp->rt && (ifp->idev->dev->flags & IFF_UP)) { - pr_warn("BUG: Address %pI6c on device %s is missing its host route.\n", + pr_warn("Address %pI6c on device %s is missing its host route.\n", &ifp->addr, ifp->idev->dev->name); } -- 2.55.0.654.g21b8a5bc05-goog