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
Mike Karels <[email protected]>
| Newsgroups | gmane.os.freebsd.devel.arm,gmane.os.freebsd.current |
|---|---|
| Message-ID | <[email protected]> |
On 6 Jul 2023, at 18:53, John F Carr 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 isolating this. Let me know when you have the bug number.
I just tested a fix (the compat code drops the reference on the current
address space an extra time, probably freeing it).
Mike