Hi Kevin, That’s a pretty old VPP release so you should maybe try to update.
Regarding the deadlock, what is main actually doing? If it didn’t lock the binary api's queue mutex before the barrier sync, it shouldn’t deadlock. Regards, Florin > On Apr 7, 2022, at 6:39 PM, Kevin Yan via lists.fd.io > <kevin.yan=mavenir....@lists.fd.io> wrote: > > Hi, > Recently I got a VPP crash issue, one worker thread is doing > mutex lock and waiting for getting the mutex, the complete call stack is > arp_learn-> vnet_arp_set_ip4_over_ethernet-> vl_api_rpc_call_main_thread-> > vl_msg_api_alloc_as_if_client-> vl_msg_api_alloc_internal-> > pthread_mutex_lock (&q->mutex); while at the same time main thread is > calling vlib_worker_thread_barrier_sync to try to lock all worker threads, > this will lead deadlock and hence VPP crashed. > > Did anyone meet the similar issue and how to solve this race > condition? I am using vpp19.01, tried to search the commits related to this > issue for later release but no lucky, not sure if this issue got fixed in > later release . > Appreciate if anyone can help. > > BRs, > Kevin > This e-mail message may contain confidential or proprietary information of > Mavenir Systems, Inc. or its affiliates and is intended solely for the use of > the intended recipient(s). If you are not the intended recipient of this > message, you are hereby notified that any review, use or distribution of this > information is absolutely prohibited and we request that you delete all > copies in your control and contact us by e-mailing to secur...@mavenir.com > <mailto:secur...@mavenir.com>. This message contains the views of its author > and may not necessarily reflect the views of Mavenir Systems, Inc. or its > affiliates, who employ systems to monitor email messages, but make no > representation that such messages are authorized, secure, uncompromised, or > free from computer viruses, malware, or other defects. Thank You > >
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