vpp: trigger sonic-mgmt#27039
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<!-- Please make sure you've read and understood our contributing guidelines; https://github.com/Azure/SONiC/blob/gh-pages/CONTRIBUTING.md Please provide following information to help code review process a bit easier: --> ### Description of PR <!-- - Please include a summary of the change and which issue is fixed. - Please also include relevant motivation and context. Where should reviewer start? background context? - List any dependencies that are required for this change. --> Summary: Fixes a race condition during init_switch causing syncd crash ### Type of change <!-- - Fill x for your type of change. - e.g. - [x] Bug fix --> - [x] Bug fix - [ ] New feature - [ ] Refactor / cleanup - [ ] Documentation update - [ ] Test improvement ### Approach #### What is the motivation for this PR? We saw below core dump during init_switch. ``` #0 0x0000ffffb5c369d0 in vpp_ev_enqueue (ev=0xaaaabe182c50) at vpp/vppxlate/SaiVppXlate.c:397 #1 vl_api_sw_interface_event_t_handler (mp=<optimized out>) at vpp/vppxlate/SaiVppXlate.c:687 #2 0x0000ffffb5264470 in vl_msg_api_handler_no_free () from /nobackup/yuega2/sonic-buildimage-cisco.202603.arctos-periodic-40135/syncd_dbg/rootfs/lib/aarch64-linux-gnu/libvlibapi.so.25.02.0 #3 0x0000ffffb5205648 in ?? () from /nobackup/yuega2/sonic-buildimage-cisco.202603.arctos-periodic-40135/syncd_dbg/rootfs/lib/aarch64-linux-gnu/libvlibmemoryclient.so.25.02.0 #4 0x0000ffffb5c3cd54 in vpp_intf_events_enable_disable (enable=true) at vpp/vppxlate/SaiVppXlate.c:1839 #5 init_vpp_client () at vpp/vppxlate/SaiVppXlate.c:1704 #6 0x0000ffffb5c208bc in saivs::SwitchVpp::vpp_dp_initialize (this=this@entry=0xaaaabe17a3d0) at vpp/SwitchVppRif.cpp:468 #7 0x0000ffffb5c0508c in saivs::SwitchVpp::SwitchVpp (this=this@entry=0xaaaabe17a3d0, switch_id=switch_id@entry=141733920768, manager=..., config=..., warmBootState=...) at vpp/SwitchVpp.cpp:44 ``` This happened during init_switch right after vpp_intf_events_enable_disable, an event came in but event_queue had not been properly initialized. ##### Work item tracking - Microsoft ADO **(number only)**: #### How did you do it? Move event queue initialization before enabling events from vpp. #### How did you verify/test it? Run sonic-mgmt via sonic-net/sonic-buildimage#27039 #### Any platform specific information? vpp specific ### Documentation <!-- (If it's a new feature, new test case) Did you update documentation/Wiki relevant to your implementation? Link to the wiki page? --> Signed-off-by: Sonic Build Admin <sonicbld@microsoft.com>
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- sonic-net/sonic-platform-vpp#255 Signed-off-by: Yue Gao <yuega2@cisco.com>
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Signed-off-by: Yue Gao <yuega2@cisco.com>
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Signed-off-by: Yue Gao <yuega2@cisco.com>
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