Commit dce783c5 authored by Mike Frysinger's avatar Mike Frysinger Committed by Bryan Wu
Browse files

Blackfin arch: add BUG_ON() checks to make sure we dont overflow the cplb tables 



Signed-off-by: default avatarMike Frysinger <vapier.adi@gmail.com>
Signed-off-by: default avatarBryan Wu <cooloney@kernel.org>
parent 86249911

arch/blackfin/kernel/cplb-nompu/cplbinit.c

+10 −1
Original line number Diff line number Diff line
@@ -420,8 +420,17 @@ void __init generate_cplb_tables_cpu(unsigned int cpu) 
		}

	}



	/* close tables */

	/* make sure we locked the kernel start */

	BUG_ON(cplb.init_i.pos < 2 + cplb_data[ZERO_P].valid);

	BUG_ON(cplb.init_d.pos < 1 + cplb_data[ZERO_P].valid + cplb_data[L1D_MEM].valid);



	/* make sure we didnt overflow the table */

	BUG_ON(cplb.init_i.size <= cplb.init_i.pos);

	BUG_ON(cplb.init_d.size <= cplb.init_d.pos);

	BUG_ON(cplb.switch_i.size <= cplb.switch_i.pos);

	BUG_ON(cplb.switch_d.size <= cplb.switch_d.pos);



	/* close tables */

	close_cplbtab(&cplb.init_i);

	close_cplbtab(&cplb.init_d);