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Date: Sun, 12 Oct 2014 11:46:53 -0700 From: Eric Dumazet <eric.dumazet@...il.com> To: Krzysztof Kolasa <kkolasa@...soft.pl> Cc: netdev@...r.kernel.org, edumazet@...il.com, David Miller <davem@...emloft.net> Subject: Re: something is wrong in commit 971f10eca1 - tcp: better TCP_SKB_CB layout to reduce cache line misses On Sun, 2014-10-12 at 19:11 +0200, Krzysztof Kolasa wrote: > This commit is the result of bisect my problem with window decoration in > gnome shell ( button, icons, colors etc.) > > after revert this commit I don't have any problem with themes windows > > a little impossible, commit to the network and affect the graphics might > be a problem with the allocation and release of memory > > my system: 64bit Ubuntu 12.04.5 LTS, kernel next > > latest AMD fglrx driver 14.301 ( problem tested and exist in 14.200 also ) > > Regards, > > Krzysztof Hi Krzysztof This sounds quite strange to me. Some memory corruption might happen regardless of networking changes, and this commit could uncover an existing bug. You might try different SLUB/SLAB choice, and try different debugging SLUB/SLAB facilities. With SLUB, skbuff_fclone_cache shares :t-0000512 kmem cache. You could try slub_nomerge=1 for a start. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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