On 3/11/22 10:18 AM, Delyan Kratunov wrote:
On Thu, 2022-03-10 at 21:10 -0800, Yonghong Song wrote:
On 3/10/22 4:11 PM, Delyan Kratunov wrote:
[..]
When I tried to build the patch set with parallel mode (-j),
make -C tools/testing/selftests/bpf -j
I hit the following errors:
/bin/sh: line 1: 3484984 Bus error (core dumped)
/home/yhs/work/bpf-next/tools/testing/selftests/bpf/tools/sbin/bpftool
gen skeleton
/home/yhs/work/bpf-next/tools/testing/selftests/bpf/test_ksyms_weak.linked3.o
name test_ksyms_weak >
/home/yhs/work/bpf-next/tools/testing/selftests/bpf/test_ksyms_weak.skel.h
make: *** [Makefile:496:
/home/yhs/work/bpf-next/tools/testing/selftests/bpf/test_ksyms_weak.skel.h]
Error 135
make: *** Deleting file
'/home/yhs/work/bpf-next/tools/testing/selftests/bpf/test_ksyms_weak.skel.h'
make: *** Waiting for unfinished jobs....
make: Leaving directory
'/home/yhs/work/bpf-next/tools/testing/selftests/bpf'
Probably some make file related issues.
I didn't hit this issue before without this patch set.
Hm, that's interesting, can you reproduce it? I build everything with -j and
have not seen any bpftool issues. I also use ASAN for bpftool and that's not
complaining about anything either.
I can reproduce it in 50% of tries with command line:
make -C tools/testing/selftests/bpf -j
SIGBUS suggests a memory mapped file was not there. I'll try and come up with
ways that can happen, especially given that it's a `gen skeleton` invocation,
which I haven't changed at all.
--Delyan
