REG_ERR            16 arch/x86/um/shared/sysdep/mcontext.h 		(fi).error_code = (mc)->gregs[REG_ERR]; \
REG_ERR            25 arch/x86/um/shared/sysdep/mcontext.h 		(fi).error_code = (mc)->gregs[REG_ERR]; \
REG_ERR           484 tools/testing/selftests/x86/sigreturn.c 	sig_err = ctx->uc_mcontext.gregs[REG_ERR];
REG_ERR           187 tools/testing/selftests/x86/test_vsyscall.c 	segv_err =  ctx->uc_mcontext.gregs[REG_ERR];