Yunkai Zhang created TS-2187: -------------------------------- Summary: failed assert `nr == sizeof(uint64_t)` in EventNotify::signal() Key: TS-2187 URL: https://issues.apache.org/jira/browse/TS-2187 Project: Traffic Server Issue Type: Bug Components: Core Reporter: Yunkai Zhang
I have noticed two bug report on "failed assert `nr == sizeof(uint64_t)`" in EventNotify::signal(): {code} [TrafficServer] using root directory '/usr/local/trafficserver-4.1.0' FATAL: EventNotify.cc:73: failed assert `nr == sizeof(uint64_t)` /usr/local/trafficserver-4.1.0/bin/traffic_server - STACK TRACE: /usr/local/trafficserver-4.1.0/lib/libtsutil.so.4(+0x14b57)[0x2b71a2d84b57] /usr/local/trafficserver-4.1.0/lib/libtsutil.so.4(+0x13d7f)[0x2b71a2d83d7f] /usr/local/trafficserver-4.1.0/lib/libtsutil.so.4(+0x1c32e)[0x2b71a2d8c32e] /usr/local/trafficserver-4.1.0/bin/traffic_server(_ZN9LogObject15_checkout_writeEPmm+0x1f5)[0x5adf25] /usr/local/trafficserver-4.1.0/bin/traffic_server(_ZN16LogObjectManager23check_buffer_expirationEl+0x7b)[0x5afbfb] /usr/local/trafficserver-4.1.0/bin/traffic_server(_ZN3Log14periodic_tasksEl+0xe2)[0x595c92] /usr/local/trafficserver-4.1.0/bin/traffic_server(_ZN3Log17flush_thread_mainEPv+0x28e)[0x596cee] /usr/local/trafficserver-4.1.0/bin/traffic_server[0x59abcd] /usr/local/trafficserver-4.1.0/bin/traffic_server(_ZN7EThread7executeEv+0x1159)[0x6ae139] /usr/local/trafficserver-4.1.0/bin/traffic_server[0x6ab93a] /lib/x86_64-linux-gnu/libpthread.so.0(+0x6b50)[0x2b71a479cb50] /lib/x86_64-linux-gnu/libc.so.6(clone+0x6d)[0x2b71a5430a7d] [E. Mgmt] log ==> [TrafficManager] using root directory '/usr/local/trafficserver-4.1.0' [TrafficServer] using root directory '/usr/local/trafficserver-4.1.0' {code} In order to fix this issue, I cook a patch: 1) Using nonblock eventfd, so that we can tolerate write() failed with errno EAGANIN -- which is acceptable as the signal receiver will be notified eventually in this case. 2) After using nonblock eventfd, read() will not block in wait(). So I use epoll_wait() to implement block behavior, just like timedwait(). Please test this patch, any feedback is welcome. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira