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dkim=none ("invalid DKIM record") header.d=intel.com header.s=Intel header.b=LSKkALcy; dmarc=pass (policy=none) header.from=intel.com; arc=pass ("microsoft.com:s=arcselector9901:i=1"); spf=pass (imf29.hostedemail.com: domain of michael.j.ruhl@intel.com designates 134.134.136.65 as permitted sender) smtp.mailfrom=michael.j.ruhl@intel.com X-Rspam-User: X-Rspamd-Server: rspam01 X-HE-Tag: 1663862220-495170 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: >-----Original Message----- >From: dri-devel On Behalf Of >Kees Cook >Sent: Wednesday, September 21, 2022 11:10 PM >To: Vlastimil Babka >Cc: linux-wireless@vger.kernel.org; Jacob Shin ; >llvm@lists.linux.dev; dri-devel@lists.freedesktop.org; linux-mm@kvack.org; >Eric Dumazet ; Nguyen, Anthony L >; linux-hardening@vger.kernel.org; Sumit >Semwal ; dev@openvswitch.org; x86@kernel.org; >Brandeburg, Jesse ; intel-wired- >lan@lists.osuosl.org; David Rientjes ; Miguel Ojeda >; Yonghong Song ; Paolo Abeni >; linux-media@vger.kernel.org; Marco Elver >; Kees Cook ; Josef Bacik >; linaro-mm-sig@lists.linaro.org; Jakub Kicinski >; David Sterba ; Joonsoo Kim >; Alex Elder ; Greg Kroah- >Hartman ; Nick Desaulniers >; linux-kernel@vger.kernel.org; David S. Miller >; Pekka Enberg ; Daniel >Micay ; netdev@vger.kernel.org; linux- >fsdevel@vger.kernel.org; Andrew Morton ; >Christian K=F6nig ; linux-btrfs@vger.kernel.org >Subject: [PATCH 07/12] igb: Proactively round up to kmalloc bucket size > >Instead of having a mismatch between the requested allocation size and >the actual kmalloc bucket size, which is examined later via ksize(), >round up proactively so the allocation is explicitly made for the full >size, allowing the compiler to correctly reason about the resulting size >of the buffer through the existing __alloc_size() hint. > >Cc: Jesse Brandeburg >Cc: Tony Nguyen >Cc: "David S. Miller" >Cc: Eric Dumazet >Cc: Jakub Kicinski >Cc: Paolo Abeni >Cc: intel-wired-lan@lists.osuosl.org >Cc: netdev@vger.kernel.org >Signed-off-by: Kees Cook >--- > drivers/net/ethernet/intel/igb/igb_main.c | 1 + > 1 file changed, 1 insertion(+) > >diff --git a/drivers/net/ethernet/intel/igb/igb_main.c >b/drivers/net/ethernet/intel/igb/igb_main.c >index 2796e81d2726..4d70ee5b0f79 100644 >--- a/drivers/net/ethernet/intel/igb/igb_main.c >+++ b/drivers/net/ethernet/intel/igb/igb_main.c >@@ -1196,6 +1196,7 @@ static int igb_alloc_q_vector(struct igb_adapter >*adapter, > > ring_count =3D txr_count + rxr_count; > size =3D struct_size(q_vector, ring, ring_count); >+ size =3D kmalloc_size_roundup(size); why not: size =3D kmalloc_size_roundup(struct_size(q_vector, ring, ring_count)); ? m > /* allocate q_vector and rings */ > q_vector =3D adapter->q_vector[v_idx]; >-- >2.34.1