LoongArch: BPF: Enhance the bpf_arch_text_poke() function

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commit 73721d8676 upstream.

Enhance the bpf_arch_text_poke() function to enable accurate location
of BPF program entry points.

When modifying the entry point of a BPF program, skip the "move t0, ra"
instruction to ensure the correct logic and copy of the jump address.

Cc: stable@vger.kernel.org
Fixes: 677e6123e3 ("LoongArch: BPF: Disable trampoline for kernel module function trace")
Signed-off-by: Chenghao Duan <duanchenghao@kylinos.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Chenghao Duan 2026-01-06 10:55:02 +08:00 • committed by Greg Kroah-Hartman

parent 8453061639

commit e7a7d7e629

1 changed files with 16 additions and 1 deletions

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arch/loongarch/net/bpf_jit.c

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