net: stmmac: Avoid VLA usage

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In the quest to remove all stack VLAs from the kernel[1], this switches
the "status" stack buffer to use the existing small (8) upper bound on
how many queues can be checked for DMA, and adds a sanity-check just to
make sure it doesn't operate under pathological conditions.

[1] http://lkml.kernel.org/r/CA+55aFzCG-zNmZwX4A2FQpadafLfEzK6CC=qPXydAacU1RqZWA@mail.gmail.com

Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Jose Abreu <joabreu@synopsys.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

...

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Kees Cook 2018-05-01 14:01:30 -07:00 • committed by David S. Miller

parent 795d8098d3

commit 8ac60ffb9a

1 changed files with 5 additions and 1 deletions

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6

drivers/net/ethernet/stmicro/stmmac/stmmac_main.c

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