| commit | a459b5c756dd98cfd72b3b9d0b8e453c9115708a | [log] [tgz] |
|---|---|---|
| author | Pau Espin Pedrol <pespin@sysmocom.de> | Mon Apr 11 17:00:36 2022 +0200 |
| committer | Pau Espin Pedrol <pespin@sysmocom.de> | Tue Apr 12 10:54:04 2022 +0200 |
| tree | 6dec07960b13297e171d77b755e45e42d45d4150 | |
| parent | 687eafab1b2d1a630758a4944e7e8a5aad2efd53 [diff] |
Fix use-after-free by tun thread after tun obj destroyed The main thread calls pthread_cancel before freeing the tun object. However, pthread_cancel doesn't kill the thread synchronously (man pthread_cancel). Hence, the tun thread may still be running for a while after the tun object is/has been(ing) freed. Let's avoid this by making sure the thread is stopped before freeing the object. To accomplish it, we must wait for the thread to be cancelled. A cleanup routie is added which will signal the "tun_released" message to the main thread through an osmo_itq, which will then free the object (since talloc context is managed by the main thread). Related: SYS#5523 Change-Id: Idf005359afb41d3413b09281a9ff937d5eafcc7c
This repository contains a C-language implementation of a simulator for the SGW/MME/UE side of GTP-U. It is part of the Osmocom Open Source Mobile Communications project.
This code is primarily intended to be used in testing of 2G/3G/4G GGSN and P-GW.
Every GTP tunnel (corresponding to a PDP context or EPC bearer) is terminated in a local 'tun' device, which in turn is put into its own network namespace.
This means you can simulate any number of users / sessions / bearers on a single machine without any routing nightmare.
The code only implements the user plane (GTP1U), and not the control plane like GTP1C or GTP2C. osmo-uecups-daemon exposes a JSON-over-SCTP protocol calleD UECUPS, which allows any external control plane instance to add/remove tunnels in the daemon
The official homepage of the project is https://osmocom.org/projects/osmo-ggsn/wiki/osmo-uecups
You can clone from the official osmo-bts.git repository using
git clone git://git.osmocom.org/osmo-uecups.git
There is a cgit interface at httsp://git.osmocom.org/osmo-uecups/
FIXME
Discussions related to this software are happening on the osmocom-net-gprs@lists.osmocom.org mailing list, please see https://lists.osmocom.org/mailman/listinfo/osmocom-net-gprs for subscription options and the list archive.
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The current patch queue for osmo-bts can be seen at https://gerrit.osmocom.org/#/q/project:osmo-uecups+status:open