Hi,lists, I upgraded my squid box from freebsd 9.2 to freebsd 10-stable, and I found when using aufs storage scheme, squid just report "segment fault" and quit, but diskd works normal. And I found compiled squid with tcmalloc, squid quit with "segment fault" too, whenever using aufs or diskd. I'm sure aufs and tcmalloc works fine with freebsd 9.2. Does somebody run into the same issue like me?! Regards Simon build info: # uname -a FreeBSD sq-l1-n2 10.0-STABLE FreeBSD 10.0-STABLE #0 r261220: Tue Jan 28 11:10:07 CST 2014 root@sq-l1-n2:/usr/obj/usr/src/sys/stable-261220 amd64 # squid -vv Squid Cache: Version 3.3.11 configure options: '--with-default-user=squid' '--bindir=/usr/local/sbin' '--sbindir=/usr/local/sbin' '--datadir=/usr/local/etc/squid' '--libexecdir=/usr/local/libexec/squid' '--localstatedir=/var' '--sysconfdir=/usr/local/etc/squid' '--with-logdir=/var/log/squid' '--with-pidfile=/var/run/squid/squid.pid' '--with-swapdir=/var/squid/cache/squid' '--enable-auth' '--enable-build-info' '--enable-loadable-modules' '--enable-removal-policies=lru heap' '--disable-epoll' '--disable-linux-netfilter' '--disable-linux-tproxy' '--disable-translation' '--enable-auth-basic=DB MSNT MSNT-multi-domain NCSA PAM POP3 RADIUS fake getpwnam' '--enable-auth-digest=file' '--enable-external-acl-helpers=file_userip time_quota unix_group' '--enable-auth-negotiate=none' '--enable-auth-ntlm=fake smb_lm' '--enable-storeio=diskd rock ufs aufs' '--enable-disk-io=AIO Blocking DiskDaemon IpcIo Mmapped DiskThreads' '--enable-log-daemon-helpers=file' '--enable-url-rewrite-helpers=fake' '--disable-htcp' '--disable-forw-via-db' '--disable-cache-digests' '--disable-wccp' '--disable-wccpv2' '--disable-ident-lookups' '--disable-ipfw-transparent' '--disable-pf-transparent' '--disable-ipf-transparent' '--enable-follow-x-forwarded-for' '--enable-ecap' '--disable-icap-client' '--disable-esi' '--enable-kqueue' '--with-large-files' '--with-filedescriptors=64000' '--with-aufs-threads=64' '--enable-err-languages=English' '--enable-default-err-language=English' '--disable-eui' '--disable-auto-locale' '--enable-http-violations' '--disable-ipv6' '--disable-icmp' '--disable-delay-pool' '--prefix=/usr/local' '--mandir=/usr/local/man' '--infodir=/usr/local/info/' '--build=amd64-portbld-freebsd10.0' 'build_alias=amd64-portbld-freebsd10.0' 'CC=gcc47' 'CFLAGS=-g -Wall -O2 -pipe -msse3 -I/usr/local/include -L/usr/local/lib -I/usr/local/include -fno-strict-aliasing' 'LDFLAGS=-pthread -Wl,-L/usr/local/lib -pthread -L/usr/local/lib' 'CPPFLAGS=' 'CXX=g++47' 'CXXFLAGS=-g -Wall -O2 -pipe -msse3 -I/usr/local/include -L/usr/local/lib -I/usr/local/include -fno-strict-aliasing -fconserve-space -Wno-unused-private-field' 'CPP=cpp47' 'PKG_CONFIG=pkgconf'