# 0.0.32 (Released June 18th, 2025)

These are some of the highlights of drgn 0.0.32. See the GitHub release for the full release notes, including more improvements and bug fixes.

## MiniDebugInfo Symbol Support

Stephen Brennan added support for MiniDebugInfo, a format providing additional, compressed symbols for stack traces used in Fedora Linux and its derivatives. Support for this feature requires liblzma.

## Page Pool Helper and Leak Scripts

Dragos Tatulea contributed the `is_pp_page()` helper for identifying page pool pages, as well as `contrib/pp_leak` containing scripts from his talk at Netdev 0x19.

## Timekeeping Helpers

This release adds `drgn.helpers.linux.timekeeping` containing helpers for getting various timestamps in seconds:

    >>> ktime_get_seconds()
    (time64_t)1586340
    >>> ktime_get_real_seconds()
    (time64_t)1750283629
    >>> ktime_get_boottime_seconds()
    (time64_t)3625799
    >>> ktime_get_clocktai_seconds()
    (time64_t)1750283674

and nanoseconds:

    >>> ktime_get_coarse_ns()
    (u64)1586359078118365
    >>> ktime_get_coarse_real_ns()
    (u64)1750283652394676256
    >>> ktime_get_coarse_boottime_ns()
    (u64)3625825587469558
    >>> ktime_get_coarse_clocktai_ns()
    (u64)1750283701569703118

There are also shortcuts for getting the system uptime:

    >>> uptime()
    3625837.988496921
    >>> uptime_pretty()
    '5 weeks, 6 days, 23 hours, 10 minutes, 42 seconds'

Note that these helpers have a maximum granularity of one tick (~1-10 ms) and can race with timekeeping updates for an error of up to 1 second.

## CPU Mask Weight Helpers

This release adds helpers for getting the number of CPUs to `drgn.helpers.linux.cpumask`:

    >>> num_online_cpus()
    8
    >>> num_possible_cpus()
    8
    >>> num_present_cpus()
    8

## Relative Paths for `--debug-directory`

The `--debug-directory` command line option (and the underlying `drgn.DebugInfoOptions.directories` setting) now supports relative paths. Previously, a relative path was used for searches by debug link. That has been split into a separate option, `--debug-link-directory` (`drgn.DebugInfoOptions.debug_link_directories`). This is a breaking change that was deemed necessary to fix the previous surprising behavior.

## Bug Fixes

The following bugs were fixed in this release:

- Symbols from data sections in Linux kernel loadable modules could previously not be found since Linux 6.4.

- If a partial ELF symbol table (i.e., `.dynsym`) was found, then later a full ELF symbol table (i.e., `.symtab`) was found, then the latter was supposed to override the former, but previously it wouldn’t.

- Stack unwinding through Linux kernel modules using ORC would previously fail when the `--main-symbols` command line option was used. Fixed by Stephen Brennan.

## Linux 6.16 Support

No drgn changes were required to support Linux 6.16 as of rc2.

## Last Release With Python 3.6 & 3.7 Support

This will be the last release of drgn with support for Python 3.6 and 3.7. Both versions have been EOL for awhile, and the maintenance burden has become unsustainable. See here for the announcement. Python 3.8 support will probably follow suit soon.

(drgn 0.0.31 was intended to be the last release to support Python 3.6 and 3.7, but it was postponed by one release.)