Re: For snapshot builds: armv7 chroot on aarch64 has kyua test -k /usr/tests/Kyuafile sys/kern/kern_copyin hung up [in getpid?], unkillable, prevents reboot

On Jul 6, 2023, at 16:53, John F Carr <jfc@mit.edu> wrote:

> On Jun 25, 2023, at 20:16, Mark Millard <marklmi@yahoo.com> wrote:
>> 
>> . . .
>> 
> 
> The hang is caused by the sysctl call in tests/sys/kern/kern_copyin.c.  The function below hangs when called in a 32 bit ARM process running in a chroot environment on a 64 bit ARM system.  I will write up a bug report.
> 
> static int
> get_vm_layout(struct kinfo_vm_layout *kvm)
> {
> size_t len;
> int mib[4];
> 
> mib[0] = CTL_KERN;
> mib[1] = KERN_PROC;
> mib[2] = KERN_PROC_VM_LAYOUT;
> mib[3] = getpid();
> len = sizeof(*kvm);
> 
> return (sysctl(mib, nitems(mib), kvm, &len, NULL, 0));
> }
> 

Thanks for the tiny-reproducer analysis! That should help
make getting to a fix more actionable.

===
Mark Millard
marklmi at yahoo.com