Hello again! Today I have also found another segfaults which occurred under heavy load with nbthreads>1 on two haproxy-instances: segfault at ffffffff00000040 ip 00005566f9ceb3af sp 00007f98d0d569f8 error 7 in haproxy[5566f9be0000+169000] and segfault at fffffffe00000040 ip 000055bbf359d3af sp 00007ffe59ed65b8 error 7 in haproxy[55bbf3492000+169000] Both lead us to init_task: $ /usr/bin/addr2line -e /usr/sbin/haproxy -fCi 0x10b3af init_task ??:?
2018-01-17 13:12 GMT+03:00 Максим Куприянов <maxim.kupriya...@gmail.com>: > Hi! > > I have multiple instances of haproxy=1.8-3 running with nbthreads=2 and > more. Those instances sometimes fail with an error like that in dmesg: > haproxy[22287]: segfault at 5574915aab8a ip 000055828ce3adea sp > 00007ffc105c8fb0 error 6 in haproxy[55828cd2f000+169000] > Instances with no nbthreads-parameter set are not affected. > > addr2line gave a tip to the falling function: > /usr/bin/addr2line -e /usr/sbin/haproxy -fCi 0x10bdea > pendconn_grab_from_px > ??:? > > Version of haproxy: > haproxy -vv > HA-Proxy version 1.8.3-1 2018/01/09 > Copyright 2000-2017 Willy Tarreau <wi...@haproxy.org> > > Build options : > TARGET = linux2628 > CPU = generic > CC = gcc > CFLAGS = -g -O2 -fPIE -fstack-protector --param=ssp-buffer-size=4 > -Wformat -Werror=format-security -D_FORTIFY_SOURCE=2 > OPTIONS = USE_GETADDRINFO=1 USE_ZLIB=1 USE_REGPARM=1 USE_THREAD=1 > USE_OPENSSL=1 USE_LUA=1 USE_PCRE=1 USE_PCRE_JIT=1 USE_TFO=1 USE_NS=1 > > Default settings : > maxconn = 2000, bufsize = 16384, maxrewrite = 1024, maxpollevents = 200 > > Built with OpenSSL version : OpenSSL 1.0.1f 6 Jan 2014 > Running on OpenSSL version : OpenSSL 1.0.1f 6 Jan 2014 > OpenSSL library supports TLS extensions : yes > OpenSSL library supports SNI : yes > OpenSSL library supports : SSLv3 TLSv1.0 TLSv1.1 TLSv1.2 > Built with Lua version : Lua 5.3.1 > Built with transparent proxy support using: IP_TRANSPARENT > IPV6_TRANSPARENT IP_FREEBIND > Encrypted password support via crypt(3): yes > Built with multi-threading support. > Built with PCRE version : 8.31 2012-07-06 > Running on PCRE version : 8.31 2012-07-06 > PCRE library supports JIT : no (libpcre build without JIT?) > Built with zlib version : 1.2.8 > Running on zlib version : 1.2.8 > Compression algorithms supported : identity("identity"), > deflate("deflate"), raw-deflate("deflate"), gzip("gzip") > Built with network namespace support. > > Available polling systems : > epoll : pref=300, test result OK > poll : pref=200, test result OK > select : pref=150, test result OK > Total: 3 (3 usable), will use epoll. > > Available filters : > [SPOE] spoe > [COMP] compression > [TRACE] trace > > > -- > Best regards, > Maksim Kupriianov >