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| author | Radim Krčmář <[email protected]> | 2025-08-12 09:02:56 +0000 |
|---|---|---|
| committer | Paul Walmsley <[email protected]> | 2025-09-05 21:31:20 +0000 |
| commit | 8a16586fa7b8a01360890d284896b90c217dca44 (patch) | |
| tree | 47dd31eb6a5547969777c10021c98744beacac4d | |
| parent | riscv, bpf: use lw when reading int cpu in BPF_MOV64_PERCPU_REG (diff) | |
| download | kernel-8a16586fa7b8a01360890d284896b90c217dca44.tar.gz kernel-8a16586fa7b8a01360890d284896b90c217dca44.zip | |
riscv, bpf: use lw when reading int cpu in bpf_get_smp_processor_id
emit_ld is wrong, because thread_info.cpu is 32-bit, not xlen-bit wide.
The struct currently has a hole after cpu, so little endian accesses
seemed fine.
Fixes: 2ddec2c80b44 ("riscv, bpf: inline bpf_get_smp_processor_id()")
Cc: [email protected]
Signed-off-by: Radim Krčmář <[email protected]>
Reviewed-by: Pu Lehui <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Paul Walmsley <[email protected]>
| -rw-r--r-- | arch/riscv/net/bpf_jit_comp64.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/riscv/net/bpf_jit_comp64.c b/arch/riscv/net/bpf_jit_comp64.c index 6e1554d89681..9883a55d61b5 100644 --- a/arch/riscv/net/bpf_jit_comp64.c +++ b/arch/riscv/net/bpf_jit_comp64.c @@ -1763,7 +1763,7 @@ int bpf_jit_emit_insn(const struct bpf_insn *insn, struct rv_jit_context *ctx, */ if (insn->src_reg == 0 && insn->imm == BPF_FUNC_get_smp_processor_id) { /* Load current CPU number in R0 */ - emit_ld(bpf_to_rv_reg(BPF_REG_0, ctx), offsetof(struct thread_info, cpu), + emit_lw(bpf_to_rv_reg(BPF_REG_0, ctx), offsetof(struct thread_info, cpu), RV_REG_TP, ctx); break; } |