Programs ran using proot fail on arm64 xenial chroots

[Christopher Townsend]

Any program ran using proot on arm64 xenial based chroots fails.

This is example output:

$ PROOT_NO_SECCOMP=1 proot -b /usr/lib/locale -S /home/phablet/.cache/libertine-container/test/rootfs ls
proot info: pid 8890: terminated with signal 9

[Christopher Townsend (townsend)]

Some more details when running strace on proot (truncated output):

...
ptrace(PTRACE_SETREGSET, 11208, NT_PRSTATUS, [{0x2437f168, 272}]) = 0
ptrace(PTRACE_SYSCALL, 11208, NULL, SIG_0) = 0
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_TRAPPED, si_pid=11208, si_uid=32011, si_status=SIGTRAP, si_utime=0, si_stime=0} ---
wait4(-1, [{WIFSTOPPED(s) && WSTOPSIG(s) == SIGTRAP} | PTRACE_EVENT_EXIT << 16], __WALL, NULL) = 11208
ptrace(PTRACE_SYSCALL, 11208, NULL, SIG_0) = 0
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=11208, si_uid=32011, si_status=SIGKILL, si_utime=0, si_stime=0} ---
wait4(-1, [{WIFSIGNALED(s) && WTERMSIG(s) == SIGKILL}], __WALL, NULL) = 11208
...

*Something* is sending the process in question SIGKILL.

[Christopher Townsend (townsend)]

Looks like we have hit a roadblock with this. Looks to be issues both with proot and some kernels such as the one on frieza.

We may just have to require kernels on any device to support unprivileged LXC's, ie the 3.13 kernel.

[Christopher Townsend (townsend)]

Don't think this is relevant anymore. Marking 'Won't Fix'.