linux-kernel - Re: [PATCH net-next v10 08/16] tls: Inline do_tcp

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Date:   Thu, 3 Aug 2023 14:52:13 +0300
From:   Tariq Toukan <ttoukan.linux@...il.com>
To:     Jakub Kicinski <kuba@...nel.org>
Cc:     David Howells <dhowells@...hat.com>, netdev@...r.kernel.org,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Paolo Abeni <pabeni@...hat.com>,
        Willem de Bruijn <willemdebruijn.kernel@...il.com>,
        David Ahern <dsahern@...nel.org>,
        Matthew Wilcox <willy@...radead.org>,
        Al Viro <viro@...iv.linux.org.uk>,
        Christoph Hellwig <hch@...radead.org>,
        Jens Axboe <axboe@...nel.dk>, Jeff Layton <jlayton@...nel.org>,
        Christian Brauner <brauner@...nel.org>,
        Chuck Lever III <chuck.lever@...cle.com>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-mm@...ck.org, Boris Pismenny <borisp@...dia.com>,
        John Fastabend <john.fastabend@...il.com>,
        Gal Pressman <gal@...dia.com>, ranro@...dia.com,
        samiram@...dia.com, drort@...dia.com,
        Tariq Toukan <tariqt@...dia.com>
Subject: Re: [PATCH net-next v10 08/16] tls: Inline do_tcp_sendpages()



On 26/07/2023 23:08, Jakub Kicinski wrote:
> On Wed, 26 Jul 2023 22:20:42 +0300 Tariq Toukan wrote:
>>> There is a small bug in this commit, we should always set SPLICE.
>>> But I don't see how that'd cause the warning you're seeing.
>>> Does your build have CONFIG_DEBUG_VM enabled?
>>
>> No.
>>
>> # CONFIG_DEBUG_VM is not set
>> # CONFIG_DEBUG_VM_PGTABLE is not set
> 
> Try testing v6.3 with DEBUG_VM enabled or just remove the IS_ENABLED()
> from: https://github.com/torvalds/linux/blob/v6.4/net/ipv4/tcp.c#L1051

Tested. It doesn't repro.