riscv, bpf: Fix incorrect runtime stats

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When __bpf_prog_enter() returns zero, the s1 register is not set to zero,
resulting in incorrect runtime stats. Fix it by setting s1 immediately upon
the return of __bpf_prog_enter().

Fixes: 49b5e77ae3 ("riscv, bpf: Add bpf trampoline support for RV64")
Signed-off-by: Xu Kuohai <xukuohai@huawei.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Pu Lehui <pulehui@huawei.com>
Acked-by: Björn Töpel <bjorn@kernel.org>
Link: https://lore.kernel.org/bpf/20240416064208.2919073-3-xukuohai@huaweicloud.com

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Xu Kuohai 2024-04-16 14:42:08 +08:00 • committed by Daniel Borkmann

parent dc7d7447b5

commit 10541b374a

1 changed files with 3 additions and 3 deletions

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arch/riscv/net/bpf_jit_comp64.c

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