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Date: Thu, 27 Sep 2012 18:34:06 -0400 (EDT) From: David Miller <davem@...emloft.net> To: vipul@...lsio.com CC: netdev@...r.kernel.org Subject: You have to fix this You cannot put such monster sized local data objects on the stack: drivers/net/ethernet/chelsio/cxgb4/t4_hw.c: In function ‘t4_memory_rw.constprop.6’: drivers/net/ethernet/chelsio/cxgb4/t4_hw.c:484:1: warning: the frame size of 2056 bytes is larger than 2048 bytes [-Wframe-larger-than=] That's because of this thing: __be32 data[MEMWIN0_APERTURE/sizeof(__be32)]; I'm really surprised this didn't show up in any of your test builds. Or are you ignoring warnings that your changes add?