Chenghao Duan e628b0524b riscv: bpf: Fix uninitialized symbol 'retval_off' ...

[ Upstream commit d0bf7cd5df ]

In the __arch_prepare_bpf_trampoline() function, retval_off is only
meaningful when save_ret is true, so the current logic is correct.
However, in the original logic, retval_off is only initialized under
certain conditions; for example, in the fmod_ret logic, the compiler is
not aware that the flags of the fmod_ret program (prog) have set
BPF_TRAMP_F_CALL_ORIG, which results in an uninitialized symbol
compilation warning.

So initialize retval_off unconditionally to fix it.

Signed-off-by: Chenghao Duan <duanchenghao@kylinos.cn>
Reviewed-by: Pu Lehui <pulehui@huawei.com>
Link: https://lore.kernel.org/r/20250922062244.822937-2-duanchenghao@kylinos.cn
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2025-11-13 15:34:07 -05:00

..

bpf_jit_comp32.c

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bpf_jit_comp64.c

riscv: bpf: Fix uninitialized symbol 'retval_off'

2025-11-13 15:34:07 -05:00

bpf_jit_core.c

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bpf_jit.h

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Makefile

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