From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 541063176E1; Fri, 15 Aug 2025 17:33:09 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755279190; cv=none; b=tKquJ0oc5ou5yZFl1cC4eCumxIKRf7RfYJ2qwkXPNlHw/cZ1wFDMDrDL3lon3fJcGyzIvbO8FBLPqy7r9h5W3umAV42wOpCEPVqVZLOyrxWmDLEzt3DgusZSfbOFvVoej2Jj5fUvO9J12BI/IJ7c6zuzb9StRNKtJl4XsxTN4XQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755279190; c=relaxed/simple; bh=KqrFhdDJ23bZRVUJJNDTEr4LLORQRqcHvKSMPEDqTi8=; h=Date:From:To:Cc:Subject:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=V96Lh1NL55beN+cFEQKpnUvJsZ1cfFv8gC92RwbOsaSH7csqIEHG6BNIKfVk7qHrKxwIEJJJaks3Q5pkFKE39EPbk5rcqDNbw+4FgUPkvhE6mj95MjcWPLf6olIgbNWCE4/0X+CIoLC2I1vAqg6pe4gAKMssvmm9zfA5LQAZ7mY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=YyleoRpL; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="YyleoRpL" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 88DF8C4CEF1; Fri, 15 Aug 2025 17:33:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1755279189; bh=KqrFhdDJ23bZRVUJJNDTEr4LLORQRqcHvKSMPEDqTi8=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=YyleoRpL50JxYpJoOnz5OgM6M7T0x89HfYoD+vaK6HQ8pdpoijBcmlFapQGRtPEaN TnzyJc5mZTRBRTcycup5Y/PRlGytS5IkxAYWIfT4b9tRVNv2rRBoXADh4bPVnJuNe8 07JsiI1QfqEKxolZ2B6LIm1NpPUQ+tierm8GLuyDCXw+iqE3E2xjs9EhzvIhT3MJ+r pRSYfLC3YIUgL3sNzZS0YMQXIb+iXUqXriF5OQxFQPN5Smh9UHXAbMpekGxQKzjEki X51Ch2nigJER1nyGvDBcYCEqeM+3X43IRhoxVpJOrEQtPYzlGSxmDdGn849FBLe0OT EfLw5Jo4sEdvg== Date: Fri, 15 Aug 2025 10:33:08 -0700 From: Jakub Kicinski To: Breno Leitao Cc: Pavel Begunkov , Johannes Berg , Mike Galbraith , paulmck@kernel.org, LKML , netdev@vger.kernel.org, boqun.feng@gmail.com Subject: Re: netconsole: HARDIRQ-safe -> HARDIRQ-unsafe lock order warning Message-ID: <20250815103308.4993df04@kernel.org> In-Reply-To: References: <20250814172326.18cf2d72@kernel.org> <3d20ce1b-7a9b-4545-a4a9-23822b675e0c@gmail.com> <20250815094217.1cce7116@kernel.org> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit On Fri, 15 Aug 2025 10:29:00 -0700 Breno Leitao wrote: > On Fri, Aug 15, 2025 at 09:42:17AM -0700, Jakub Kicinski wrote: > > On Fri, 15 Aug 2025 11:44:45 +0100 Pavel Begunkov wrote: > > > On 8/15/25 01:23, Jakub Kicinski wrote: > > > > I suspect disabling netconsole over WiFi may be the most sensible way out. > > I believe we might be facing a similar issue with virtio-net. I could be misremembering but I thought virtio-net try_lock()s.