Messages in this thread | | | Date | Thu, 22 Sep 2022 08:57:46 -0700 | From | Kees Cook <> | Subject | Re: [PATCH 03/12] net: ipa: Proactively round up to kmalloc bucket size |
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On Thu, Sep 22, 2022 at 08:45:19AM -0500, Alex Elder wrote: > On 9/21/22 10:10 PM, Kees Cook wrote: > > Instead of discovering the kmalloc bucket size _after_ allocation, 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: Alex Elder <elder@kernel.org> > > Cc: "David S. Miller" <davem@davemloft.net> > > Cc: Eric Dumazet <edumazet@google.com> > > Cc: Jakub Kicinski <kuba@kernel.org> > > Cc: Paolo Abeni <pabeni@redhat.com> > > Cc: netdev@vger.kernel.org > > Signed-off-by: Kees Cook <keescook@chromium.org> > > --- > > drivers/net/ipa/gsi_trans.c | 7 +++++-- > > 1 file changed, 5 insertions(+), 2 deletions(-) > > > > diff --git a/drivers/net/ipa/gsi_trans.c b/drivers/net/ipa/gsi_trans.c > > index 18e7e8c405be..cec968854dcf 100644 > > --- a/drivers/net/ipa/gsi_trans.c > > +++ b/drivers/net/ipa/gsi_trans.c > > @@ -89,6 +89,7 @@ int gsi_trans_pool_init(struct gsi_trans_pool *pool, size_t size, u32 count, > > u32 max_alloc) > > { > > void *virt; > > + size_t allocate; > > I don't care about this but the reverse Christmas tree > convention would put the "allocate" variable definition > above "virt".
Oops, yes; thank you!
-Kees
-- Kees Cook
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