Unverified Commit 291debb3 authored Feb 22, 2019 by Atish Patra Committed by Palmer Dabbelt Mar 04, 2019

RISC-V: Compare cpuid with NR_CPUS before mapping.



We should never have a cpuid greater that NR_CPUS. Compare with NR_CPUS
before creating the mapping between logical and physical CPU ids. This
is also mandatory as NR_CPUS check is removed from
riscv_of_processor_hartid.

Signed-off-by: Atish Patra <atish.patra@wdc.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>

parent dd641e26

arch/riscv/kernel/smpboot.c

+5 −0

Original line number	Diff line number	Diff line
		@@ -66,6 +66,11 @@ void __init setup_smp(void)
		found_boot_cpu = 1;
		continue;
		}
		if (cpuid >= NR_CPUS) {
		pr_warn("Invalid cpuid [%d] for hartid [%d]\n",
		cpuid, hart);
		break;
		}

		cpuid_to_hartid_map(cpuid) = hart;
		set_cpu_possible(cpuid, true);