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Date:   Thu, 3 Dec 2020 14:13:28 +0800
From:   kernel test robot <>
To:     Andrii Nakryiko <>,,,,
Subject: Re: [PATCH v5 bpf-next 09/14] bpf: remove hard-coded btf_vmlinux
 assumption from BPF verifier

Hi Andrii,

I love your patch! Yet something to improve:

[auto build test ERROR on bpf-next/master]

base: master
config: ia64-defconfig (attached as .config)
compiler: ia64-linux-gcc (GCC) 9.3.0
reproduce (this is a W=1 build):
        wget -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git remote add linux-review
        git fetch --no-tags linux-review Andrii-Nakryiko/Support-BTF-powered-BPF-tracing-programs-for-kernel-modules/20201203-115515
        git checkout c0eabf99f8312c12d4c210628360d28bbf915a91
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=ia64 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <>

All errors (new ones prefixed by >>):

   ia64-linux-ld: kernel/bpf/core.o: in function `bpf_prog_free':
>> (.text+0x3d2): undefined reference to `btf_put'

0-DAY CI Kernel Test Service, Intel Corporation

Download attachment ".config.gz" of type "application/gzip" (19868 bytes)

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