Hi , I am facing some mutex deadlock between Client application and vpp. So for example we see Client App attempt the connect and invoke vl_client_connect grabs the pthread_mutex_lock (&svm->mutex); then subsequently dies later due to some reason.
We then have VPP hanging in dead_client_scan and on subsequent Client app restarts we see Thread 1 (Thread 0x2b6c4a79fa40 (LWP 5201)): #0 0x00002b6c4b82942d in __lll_lock_wait () from /lib64/libpthread.so.0 #1 0x00002b6c4b824dcb in _L_lock_812 () from /lib64/libpthread.so.0 #2 0x00002b6c4b824c98 in pthread_mutex_lock () from /lib64/libpthread.so.0 #3 0x00002b6c5cf03956 in region_lock (rp=rp@entry=0x3002d000, tag=tag@entry=2) at /bfs-build/build-area.32/builds/LinuxNBngp_mainline-dpdk_RH7/2018-06-13-2241/third-party/vpp/vpp_1801/build-data/../src/svm/svm.c:64 #4 0x00002b6c5cf0636b in svm_map_region (a=a@entry=0x7fff42d41ef0) at /bfs-build/build-area.32/builds/LinuxNBngp_mainline-dpdk_RH7/2018-06-13-2241/third-party/vpp/vpp_1801/build-data/../src/svm/svm.c:711 #5 0x00002b6c5cf06b4f in svm_region_find_or_create (a=a@entry=0x7fff42d41ef0) at /bfs-build/build-area.32/builds/LinuxNBngp_mainline-dpdk_RH7/2018-06-13-2241/third-party/vpp/vpp_1801/build-data/../src/svm/svm.c:892 #6 0x00002b6c5ccf0f59 in vl_map_shmem (region_name=region_name@entry=0x2b6c5d322150 <api_map.15848> "/vpe-api", is_vlib=is_vlib@entry=0) at /bfs-build/build-area.32/builds/LinuxNBngp_mainline-dpdk_RH7/2018-06-13-2241/third-party/vpp/vpp_1801/build-data/../src/vlibmemory/memory_shared.c:485 #7 0x00002b6c5ccef8eb in vl_client_api_map (region_name=region_name@entry=0x2b6c5d322150 <api_map.15848> "/vpe-api") at /bfs-build/build-area.32/builds/LinuxNBngp_mainline-dpdk_RH7/2018-06-13-2241/third-party/vpp/vpp_1801/build-data/../src/vlibmemory/memory_client.c:390 #8 0x00002b6c5d11ff42 in vapi_connect (ctx=0x10ab8780, name=0xef71698 "opwv_ats_client-0x2792000", chroot_prefix=0x0, max_outstanding_requests=<optimized out>, response_queue_size=15000, mode=VAPI_MODE_NONBLOCKING) at /bfs-build/build-area.32/builds/LinuxNBngp_mainline-dpdk_RH7/2018-06-13-2241/third-party/vpp/vpp_1801/build-data/../src/vpp-api/vapi/vapi.c:319 Any ideas/suggestions? Thanks, Chetan Bhasin -=-=-=-=-=-=-=-=-=-=-=- Links: You receive all messages sent to this group. View/Reply Online (#9651): https://lists.fd.io/g/vpp-dev/message/9651 Mute This Topic: https://lists.fd.io/mt/22448642/21656 Group Owner: [email protected] Unsubscribe: https://lists.fd.io/g/vpp-dev/unsub [[email protected]] -=-=-=-=-=-=-=-=-=-=-=-
