linux-kernel - arch/riscv/net/bpf_jit

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Message-ID: <CANp29Y6YqPbE9Y3iQEaTwD_YAQBvsxxRE=0COVYy=gBP-USvkg@mail.gmail.com>
Date:   Tue, 18 Apr 2023 12:17:44 +0200
From:   Aleksandr Nogikh <nogikh@...gle.com>
To:     pulehui@...wei.com
Cc:     linux-riscv@...ts.infradead.org,
        LKML <linux-kernel@...r.kernel.org>,
        syzkaller <syzkaller@...glegroups.com>,
        Dmitry Vyukov <dvyukov@...gle.com>
Subject: arch/riscv/net/bpf_jit_comp64.c build error

Hi Pu Lehui,

I'm writing to you regarding your following patch.

Author: Pu Lehui <pulehui@...wei.com>
Date:   Wed Feb 15 21:52:04 2023 +0800

    riscv, bpf: Add bpf_arch_text_poke support for RV64

When trying to compile the "fixes" branch of the
"git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux.git" tree,
syzbot gets the following error:

arch/riscv/net/bpf_jit_comp64.c: In function 'bpf_arch_text_poke':
arch/riscv/net/bpf_jit_comp64.c:691:9: error: implicit declaration of
function 'patch_text'; did you mean 'path_get'?
[-Werror=implicit-function-declaration]
  691 |   ret = patch_text(ip, new_insns, ninsns);
      |         ^~~~~~~~~~
      |         path_get

FWIW the compiler is riscv64-linux-gnu-gcc (Debian 10.2.1-6) 10.2.1
20210110, GNU ld (GNU Binutils for Debian) 2.35.2.

Could you please take a look?

Best Regards,
Aleksandr