Hello Dave, The heading for floating point registers that are printed for active tasks is wrong. It tells that only registers 0,2,4, and 6 are printed. This is a relict from s390 (31 bit) times. On s390x (64 bit) we have all floating point registers. Now the correct heading is printed. Signed-off-by: Michael Holzheu <holzheu(a)linux.vnet.ibm.com&gt; --- s390x.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/s390x.c +++ b/s390x.c @@ -1196,7 +1196,7 @@ s390x_print_lowcore(char* lc, struct bt_ fprintf(fp," %#018lx %#018lx\n", tmp[2],tmp[3]); ptr = lc + MEMBER_OFFSET("_lowcore","floating_pt_save_area"); - fprintf(fp," -floating point registers 0,2,4,6:\n"); + fprintf(fp," -floating point registers:\n"); tmp[0]=ULONG(ptr); tmp[1]=ULONG(ptr + S390X_WORD_SIZE); tmp[2]=ULONG(ptr + 2 * S390X_WORD_SIZE);