On Tue, Feb 23, 2021 at 01:01:16AM +0530, Naresh Kamboju wrote:

Following test regressions reported after upgrade to clang-12 from clang-10. Regression detected on Linux mainline and stable-rc 5.4, 5.10 and 5.11.

qemu-x86_64-clang-12 failed test cases, ltp-containers-tests: * netns_breakns_ip_ipv4_ioctl * netns_breakns_ip_ipv4_netlink * netns_breakns_ip_ipv6_ioctl * netns_breakns_ip_ipv6_netlink * netns_breakns_ns_exec_ipv4_ioctl * netns_breakns_ns_exec_ipv4_netlink * netns_breakns_ns_exec_ipv6_ioctl * netns_breakns_ns_exec_ipv6_netlink * netns_comm_ip_ipv4_ioctl * netns_comm_ip_ipv4_netlink * netns_comm_ip_ipv6_ioctl * netns_comm_ip_ipv6_netlink * netns_comm_ns_exec_ipv4_ioctl * netns_comm_ns_exec_ipv4_netlink * netns_comm_ns_exec_ipv6_ioctl * netns_comm_ns_exec_ipv6_netlink * netns_netlink

Test error log:

[ 19.017163] tun: Unknown symbol _GLOBAL_OFFSET_TABLE_ (err -2) open: No such device netns_netlink 1 TBROK : netns_netlink.c:143: system() failed netns_netlink 2 TBROK : netns_netlink.c:143: Remaining cases broken netns_breakns 1 TINFO: timeout per run is 0h 15m 0s [ 19.070922] veth: Unknown symbol _GLOBAL_OFFSET_TABLE_ (err -2) [ 19.095171] veth: Unknown symbol _GLOBAL_OFFSET_TABLE_ (err -2) Error: Unknown device type.[ 19.101364] ip (751) used greatest stack depth: 12088 bytes left

netns_breakns 1 TBROK: unable to create veth pair devices Cannot find device "veth0"

Reported-by: Naresh Kamboju naresh.kamboju@linaro.org

Full test error log link,

https://qa-reports.linaro.org/lkft/linux-stable-rc-linux-5.11.y/build/v5.11-... https://qa-reports.linaro.org/lkft/linux-mainline-master/build/v5.11-2899-g2...

-- Linaro LKFT https://lkft.linaro.org

Thanks for the report. This has been fixed in -next and has a CC for stable when it is merged into mainline:

https://git.kernel.org/next/linux-next/c/ebfac7b778fac8b0e8e92ec91d0b055f046... https://github.com/ClangBuiltLinux/linux/issues/1250

Cheers, Nathan