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    SubjectRe: [PATCH] pktgen: use dynamic allocation for debug print buffer
    From: Arnd Bergmann <>
    Date: Tue, 13 Mar 2018 21:58:39 +0100

    > After the removal of the VLA, we get a harmless warning about a large
    > stack frame:
    > net/core/pktgen.c: In function 'pktgen_if_write':
    > net/core/pktgen.c:1710:1: error: the frame size of 1076 bytes is larger than 1024 bytes [-Werror=frame-larger-than=]
    > The function was previously shown to be safe despite hitting
    > the 1024 bye warning level. To get rid of the annoyging warning,
    > while keeping it readable, this changes it to use strndup_user().
    > Obviously this is not a fast path, so the kmalloc() overhead
    > can be disregarded.
    > Fixes: 35951393bbff ("pktgen: Remove VLA usage")
    > Signed-off-by: Arnd Bergmann <>

    Applied, thanks.

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