Re: [PATCH] net: Add back alignment for size for __alloc_skb
From: Eric Dumazet
Date: Wed Nov 02 2011 - 19:31:31 EST
On 03/11/2011 00:24, Tony Lindgren wrote:
>
> Seems to be SLOB for omap1_defconfig.
>
> Tony
OK this makes sense now
Your patch is absolutely needed, I completely forgot about SLOB :(
since, kmalloc(386) on SLOB gives exactly ksize=386 bytes, not nearest
power of two.
[ 60.305763] malloc(size=385)->ffff880112c11e38 ksize=386 -> nsize=2
[ 60.305921] malloc(size=385)->ffff88007c92ce28 ksize=386 -> nsize=2
[ 60.306898] malloc(size=656)->ffff88007c44ad28 ksize=656 -> nsize=272
[ 60.325385] malloc(size=656)->ffff88007c575868 ksize=656 -> nsize=272
[ 60.325531] malloc(size=656)->ffff88011c777230 ksize=656 -> nsize=272
[ 60.325701] malloc(size=656)->ffff880114011008 ksize=656 -> nsize=272
[ 60.346716] malloc(size=385)->ffff880114142008 ksize=386 -> nsize=2
[ 60.346900] malloc(size=385)->ffff88011c777690 ksize=386 -> nsize=2
Acked-by: Eric Dumazet <eric.dumazet@xxxxxxxxx>
Thanks !
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