Hello, I'm seeing a lot of memory errors like this at my squid 3.3.4, using kerberos authentication and ext_kerberos_ldap_group_acl for group mapping. Any known issue? *** glibc detected *** (ext_kerberos_ldap_group_acl): double free or corruption (out): 0x00000000013f0590 *** ======= Backtrace: ========= /lib64/libc.so.6[0x36a7475916] /lib64/libc.so.6[0x36a7478443] (ext_kerberos_ldap_group_acl)[0x4031fa] /lib64/libc.so.6(__libc_start_main+0xfd)[0x36a741ecdd] (ext_kerberos_ldap_group_acl)[0x4022b9] ======= Memory map: ======== 00400000-00411000 r-xp 00000000 fd:00 150231 /usr/local/squid/libexec/ext_kerberos_ldap_group_acl 00610000-00611000 rw-p 00010000 fd:00 150231 /usr/local/squid/libexec/ext_kerberos_ldap_group_acl 013da000-024c7000 rw-p 00000000 00:00 0 [heap] 31a4200000-31a4207000 r-xp 00000000 fd:00 10375 /lib64/librt-2.12.so 31a4207000-31a4406000 ---p 00007000 fd:00 10375 /lib64/librt-2.12.so 31a4406000-31a4407000 r--p 00006000 fd:00 10375 /lib64/librt-2.12.so 31a4407000-31a4408000 rw-p 00007000 fd:00 10375 /lib64/librt-2.12.so 31a4600000-31a460e000 r-xp 00000000 fd:00 10380 /lib64/liblber-2.4.so.2.5.6 31a460e000-31a480d000 ---p 0000e000 fd:00 10380 /lib64/liblber-2.4.so.2.5.6 31a480d000-31a480e000 r--p 0000d000 fd:00 10380 /lib64/liblber-2.4.so.2.5.6 31a480e000-31a480f000 rw-p 0000e000 fd:00 10380 /lib64/liblber-2.4.so.2.5.6 31a4a00000-31a4a20000 r-xp 00000000 fd:00 134693 /usr/lib64/libnssutil3.so 31a4a20000-31a4c1f000 ---p 00020000 fd:00 134693 /usr/lib64/libnssutil3.so 31a4c1f000-31a4c25000 r--p 0001f000 fd:00 134693 /usr/lib64/libnssutil3.so 31a4c25000-31a4c26000 rw-p 00025000 fd:00 134693 /usr/lib64/libnssutil3.so 31a4e00000-31a4e39000 r-xp 00000000 fd:00 4299 /lib64/libnspr4.so 31a4e39000-31a5038000 ---p 00039000 fd:00 4299 /lib64/libnspr4.so 31a5038000-31a5039000 r--p 00038000 fd:00 4299 /lib64/libnspr4.so 31a5039000-31a503b000 rw-p 00039000 fd:00 4299 /lib64/libnspr4.so 31a503b000-31a503d000 rw-p 00000000 00:00 0 31a5200000-31a5204000 r-xp 00000000 fd:00 10378 /lib64/libplc4.so 31a5204000-31a5403000 ---p 00004000 fd:00 10378 /lib64/libplc4.so 31a5403000-31a5404000 r--p 00003000 fd:00 10378 /lib64/libplc4.so 31a5404000-31a5405000 rw-p 00004000 fd:00 10378 /lib64/libplc4.so 31a5600000-31a5603000 r-xp 00000000 fd:00 10379 /lib64/libplds4.so 31a5603000-31a5802000 ---p 00003000 fd:00 10379 /lib64/libplds4.so 31a5802000-31a5803000 r--p 00002000 fd:00 10379 /lib64/libplds4.so 31a5803000-31a5804000 rw-p 00003000 fd:00 10379 /lib64/libplds4.so 31a5a00000-31a5a38000 r-xp 00000000 fd:00 153224 /usr/lib64/libssl3.so 31a5a38000-31a5c38000 ---p 00038000 fd:00 153224 /usr/lib64/libssl3.so 31a5c38000-31a5c3a000 r--p 00038000 fd:00 153224 /usr/lib64/libssl3.so 31a5c3a000-31a5c3b000 rw-p 0003a000 fd:00 153224 /usr/lib64/libssl3.so 31a5c3b000-31a5c3c000 rw-p 00000000 00:00 0 31a5e00000-31a5e28000 r-xp 00000000 fd:00 133762 /usr/lib64/libsmime3.so 31a5e28000-31a6028000 ---p 00028000 fd:00 133762 /usr/lib64/libsmime3.so 31a6028000-31a602b000 r--p 00028000 fd:00 133762 /usr/lib64/libsmime3.so 31a602b000-31a602c000 rw-p 0002b000 fd:00 133762 /usr/lib64/libsmime3.so 31a6200000-31a6333000 r-xp 00000000 fd:00 153223 /usr/lib64/libnss3.so 31a6333000-31a6533000 ---p 00133000 fd:00 153223 /usr/lib64/libnss3.so 31a6533000-31a6538000 r--p 00133000 fd:00 153223 /usr/lib64/libnss3.so 31a6538000-31a653a000 rw-p 00138000 fd:00 153223 /usr/lib64/libnss3.so 31a653a000-31a653c000 rw-p 00000000 00:00 0 31a6600000-31a6649000 r-xp 00000000 fd:00 4030 /lib64/libldap-2.4.so.2.5.6 31a6649000-31a6848000 ---p 00049000 fd:00 4030 /lib64/libldap-2.4.so.2.5.6 31a6848000-31a6849000 r--p 00048000 fd:00 4030 /lib64/libldap-2.4.so.2.5.6 31a6849000-31a684b000 rw-p 00049000 fd:00 4030 /lib64/libldap-2.4.so.2.5.6 349e600000-349e6e8000 r-xp 00000000 fd:00 152019 /usr/lib64/libstdc++.so.6.0.13 349e6e8000-349e8e8000 ---p 000e8000 fd:00 152019 /usr/lib64/libstdc++.so.6.0.13 349e8e8000-349e8ef000 r--p 000e8000 fd:00 152019 /usr/lib64/libstdc++.so.6.0.13 349e8ef000-349e8f1000 rw-p 000ef000 fd:00 152019 /usr/lib64/libstdc++.so.6.0.13 349e8f1000-349e906000 rw-p 00000000 00:00 0 36a7000000-36a7020000 r-xp 00000000 fd:00 120 /lib64/ld-2.12.so 36a721f000-36a7220000 r--p 0001f000 fd:00 120 /lib64/ld-2.12.so 36a7220000-36a7221000 rw-p 00020000 fd:00 120 /lib64/ld-2.12.so 36a7221000-36a7222000 rw-p 00000000 00:00 0 36a7400000-36a7589000 r-xp 00000000 fd:00 148 /lib64/libc-2.12.so 36a7589000-36a7789000 ---p 00189000 fd:00 148 /lib64/libc-2.12.so 36a7789000-36a778d000 r--p 00189000 fd:00 148 /lib64/libc-2.12.so 36a778d000-36a778e000 rw-p 0018d000 fd:00 148 /lib64/libc-2.12.so 36a778e000-36a7793000 rw-p 00000000 00:00 0 36a7800000-36a7802000 r-xp 00000000 fd:00 1161 /lib64/libdl-2.12.so 36a7802000-36a7a02000 ---p 00002000 fd:00 1161 /lib64/libdl-2.12.so 36a7a02000-36a7a03000 r--p 00002000 fd:00 1161 /lib64/libdl-2.12.so 36a7a03000-36a7a04000 rw-p 00003000 fd:00 1161 /lib64/libdl-2.12.so 36a8000000-36a8083000 r-xp 00000000 fd:00 1154 /lib64/libm-2.12.so 36a8083000-36a8282000 ---p 00083000 fd:00 1154 /lib64/libm-2.12.so 36a8282000-36a8283000 r--p 00082000 fd:00 1154 /lib64/libm-2.12.so 36a8283000-36a8284000 rw-p 00083000 fd:00 1154 /lib64/libm-2.12.so 36a8800000-36a8815000 r-xp 00000000 fd:00 479 /lib64/libz.so.1.2.3 36a8815000-36a8a14000 ---p 00015000 fd:00 479 /lib64/libz.so.1.2.3 36a8a14000-36a8a15000 r--p 00014000 fd:00 479 /lib64/libz.so.1.2.3 36a8a15000-36a8a16000 rw-p 00015000 fd:00 479 /lib64/libz.so.1.2.3 36a9000000-36a901d000 r-xp 00000000 fd:00 4293 /lib64/libselinux.so.1 36a901d000-36a921c000 ---p 0001d000 fd:00 4293 /lib64/libselinux.so.1 36a921c000-36a921d000 r--p 0001c000 fd:00 4293 /lib64/libselinux.so.1 36a921d000-36a921e000 rw-p 0001d000 fd:00 4293 /lib64/libselinux.so.1 36a921e000-36a921f000 rw-p 00000000 00:00 0 36a9400000-36a9416000 r-xp 00000000 fd:00 4295 /lib64/libgcc_s-4.4.6-20120305.so.1 36a9416000-36a9615000 ---p 00016000 fd:00 4295 /lib64/libgcc_s-4.4.6-20120305.so.1 36a9615000-36a9616000 rw-p 00015000 fd:00 4295 /lib64/libgcc_s-4.4.6-20120305.so.1 36a9800000-36a9816000 r-xp 00000000 fd:00 111 /lib64/libresolv-2.12.so 36a9816000-36a9a16000 ---p 00016000 fd:00 111 /lib64/libresolv-2.12.so 36a9a16000-36a9a17000 r--p 00016000 fd:00 111 /lib64/libresolv-2.12.so 36a9a17000-36a9a18000 rw-p 00017000 fd:00 111 /lib64/libresolv-2.12.so 36a9a18000-36a9a1a000 rw-p 00000000 00:00 0 36aa000000-36aa05d000 r-xp 00000000 fd:00 1358 /lib64/libfreebl3.so 36aa05d000-36aa25c000 ---p 0005d000 fd:00 1358 /lib64/libfreebl3.so 36aa25c000-36aa25d000 r--p 0005c000 fd:00 1358 /lib64/libfreebl3.so 36aa25d000-36aa25e000 rw-p 0005d000 fd:00 1358 /lib64/libfreebl3.so 36aa25e000-36aa262000 rw-p 00000000 00:00 0 36aa400000-36aa416000 r-xp 00000000 fd:00 1369 /lib64/libnsl-2.12.so 36aa416000-36aa615000 ---p 00016000 fd:00 1369 /lib64/libnsl-2.12.so 36aa615000-36aa616000 r--p 00015000 fd:00 1369 /lib64/libnsl-2.12.so 36aa616000-36aa617000 rw-p 00016000 fd:00 1369 /lib64/libnsl-2.12.so 36aa617000-36aa619000 rw-p 00000000 00:00 0 36aac00000-36aac07000 r-xp 00000000 fd:00 4113 /lib64/libcrypt-2.12.so 36aac07000-36aae07000 ---p 00007000 fd:00 4113 /lib64/libcrypt-2.12.so 36aae07000-36aae08000 r--p 00007000 fd:00 4113 /lib64/libcrypt-2.12.so 36aae08000-36aae09000 rw-p 00008000 fd:00 4113 /lib64/libcrypt-2.12.so 36aae09000-36aae37000 rw-p 00000000 00:00 0 36ad000000-36ad019000 r-xp 00000000 fd:00 134687 /usr/lib64/libsasl2.so.2.0.23 36ad019000-36ad218000 ---p 00019000 fd:00 134687 /usr/lib64/libsasl2.so.2.0.23 36ad218000-36ad219000 r--p 00018000 fd:00 134687 /usr/lib64/libsasl2.so.2.0.23 36ad219000-36ad21a000 rw-p 00019000 fd:00 134687 /usr/lib64/libsasl2.so.2.0.23 36ad800000-36ad82a000 r-xp 00000000 fd:00 6775 /lib64/libk5crypto.so.3.1 36ad82a000-36ada29000 ---p 0002a000 fd:00 6775 /lib64/libk5crypto.so.3.1 36ada29000-36ada2b000 r--p 00029000 fd:00 6775 /lib64/libk5crypto.so.3.1 36ada2b000-36ada2c000 rw-p 0002b000 fd:00 6775 /lib64/libk5crypto.so.3.1 36adc00000-36adc02000 r-xp 00000000 fd:00 6773 /lib64/libkeyutils.so.1.3 36adc02000-36ade01000 ---p 00002000 fd:00 6773 /lib64/libkeyutils.so.1.3 36ade01000-36ade02000 r--p 00001000 fd:00 6773 /lib64/libkeyutils.so.1.3 36ade02000-36ade03000 rw-p 00002000 fd:00 6773 /lib64/libkeyutils.so.1.3 36ae000000-36ae00a000 r-xp 00000000 fd:00 6774 /lib64/libkrb5support.so.0.1 36ae00a000-36ae209000 ---p 0000a000 fd:00 6774 /lib64/libkrb5support.so.0.1 36ae209000-36ae20a000 r--p 00009000 fd:00 6774 /lib64/libkrb5support.so.0.1 36ae20a000-36ae20b000 rw-p 0000a000 fd:00 6774 /lib64/libkrb5support.so.0.1 3ef2000000-3ef2017000 r-xp 00000000 fd:00 9883 /lib64/libpthread-2.12.so 3ef2017000-3ef2217000 ---p 00017000 fd:00 9883 /lib64/libpthread-2.12.so 3ef2217000-3ef2218000 r--p 00017000 fd:00 9883 /lib64/libpthread-2.12.so 3ef2218000-3ef2219000 rw-p 00018000 fd:00 9883 /lib64/libpthread-2.12.so 3ef2219000-3ef221d000 rw-p 00000000 00:00 0 3ef2400000-3ef243f000 r-xp 00000000 fd:00 9886 /lib64/libgssapi_krb5.so.2.2 3ef243f000-3ef263f000 ---p 0003f000 fd:00 9886 /lib64/libgssapi_krb5.so.2.2 3ef263f000-3ef2640000 r--p 0003f000 fd:00 9886 /lib64/libgssapi_krb5.so.2.2 3ef2640000-3ef2642000 rw-p 00040000 fd:00 9886 /lib64/libgssapi_krb5.so.2.2 3ef2c00000-3ef2cd4000 r-xp 00000000 fd:00 9885 /lib64/libkrb5.so.3.3 3ef2cd4000-3ef2ed4000 ---p 000d4000 fd:00 9885 /lib64/libkrb5.so.3.3 3ef2ed4000-3ef2edd000 r--p 000d4000 fd:00 9885 /lib64/libkrb5.so.3.3 3ef2edd000-3ef2edf000 rw-p 000dd000 fd:00 9885 /lib64/libkrb5.so.3.3 3ef3000000-3ef3003000 r-xp 00000000 fd:00 9884 /lib64/libcom_err.so.2.1 3ef3003000-3ef3202000 ---p 00003000 fd:00 9884 /lib64/libcom_err.so.2.1 3ef3202000-3ef3203000 r--p 00002000 fd:00 9884 /lib64/libcom_err.so.2.1 3ef3203000-3ef3204000 rw-p 00003000 fd:00 9884 /lib64/libcom_err.so.2.1 7ff762db7000-7ff762dbb000 r-xp 00000000 fd:00 140804 /usr/lib64/sasl2/libplain.so.2.0.23 7ff762dbb000-7ff762fba000 ---p 00004000 fd:00 140804 /usr/lib64/sasl2/libplain.so.2.0.23 7ff762fba000-7ff762fbb000 r--p 00003000 fd:00 140804 /usr/lib64/sasl2/libplain.so.2.0.23 7ff762fbb000-7ff762fbc000 rw-p 00004000 fd:00 140804 /usr/lib64/sasl2/libplain.so.2.0.23 7ff762fbc000-7ff762fc0000 r-xp 00000000 fd:00 133412 /usr/lib64/sasl2/libanonymous.so.2.0.23 7ff762fc0000-7ff7631bf000 ---p 00004000 fd:00 133412 /usr/lib64/sasl2/libanonymous.so.2.0.23 7ff7631bf000-7ff7631c0000 r--p 00003000 fd:00 133412 /usr/lib64/sasl2/libanonymous.so.2.0.23 7ff7631c0000-7ff7631c1000 rw-p 00004000 fd:00 133412 /usr/lib64/sasl2/libanonymous.so.2.0.23 7ff7631c1000-7ff7631c5000 r-xp 00000000 fd:00 140801 /usr/lib64/sasl2/liblogin.so.2.0.23 7ff7631c5000-7ff7633c4000 ---p 00004000 fd:00 140801 /usr/lib64/sasl2/liblogin.so.2.0.23 7ff7633c4000-7ff7633c5000 r--p 00003000 fd:00 140801 /usr/lib64/sasl2/liblogin.so.2.0.23 7ff7633c5000-7ff7633c6000 rw-p 00004000 fd:00 140801 /usr/lib64/sasl2/liblogin.so.2.0.23 7ff7633c6000-7ff7633cd000 r-xp 00000000 fd:00 152012 /usr/lib64/sasl2/libgssapiv2.so.2.0.23 7ff7633cd000-7ff7635cc000 ---p 00007000 fd:00 152012 /usr/lib64/sasl2/libgssapiv2.so.2.0.23 7ff7635cc000-7ff7635cd000 r--p 00006000 fd:00 152012 /usr/lib64/sasl2/libgssapiv2.so.2.0.23 7ff7635cd000-7ff7635ce000 rw-p 00007000 fd:00 152012 /usr/lib64/sasl2/libgssapiv2.so.2.0.23 7ff7635ce000-7ff76373d000 r-xp 00000000 fd:00 6772 /lib64/libdb-4.7.so 7ff76373d000-7ff76393c000 ---p 0016f000 fd:00 6772 /lib64/libdb-4.7.so 7ff76393c000-7ff763942000 rw-p 0016e000 fd:00 6772 /lib64/libdb-4.7.so 7ff763942000-7ff763947000 r-xp 00000000 fd:00 133415 /usr/lib64/sasl2/libsasldb.so.2.0.23 7ff763947000-7ff763b46000 ---p 00005000 fd:00 133415 /usr/lib64/sasl2/libsasldb.so.2.0.23 7ff763b46000-7ff763b47000 r--p 00004000 fd:00 133415 /usr/lib64/sasl2/libsasldb.so.2.0.23 7ff763b47000-7ff763b48000 rw-p 00005000 fd:00 133415 /usr/lib64/sasl2/libsasldb.so.2.0.23 7ff763b48000-7ff763b4d000 r-xp 00000000 fd:00 58 /lib64/libnss_dns-2.12.so 7ff763b4d000-7ff763d4c000 ---p 00005000 fd:00 58 /lib64/libnss_dns-2.12.so 7ff763d4c000-7ff763d4d000 r--p 00004000 fd:00 58 /lib64/libnss_dns-2.12.so 7ff763d4d000-7ff763d4e000 rw-p 00005000 fd:00 58 /lib64/libnss_dns-2.12.so 7ff763d4e000-7ff763d5a000 r-xp 00000000 fd:00 60 /lib64/libnss_files-2.12.so 7ff763d5a000-7ff763f5a000 ---p 0000c000 fd:00 60 /lib64/libnss_files-2.12.so 7ff763f5a000-7ff763f5b000 r--p 0000c000 fd:00 60 /lib64/libnss_files-2.12.so 7ff763f5b000-7ff763f5c000 rw-p 0000d000 fd:00 60 /lib64/libnss_files-2.12.so 7ff76415f000-7ff76416f000 rw-p 00000000 00:00 0 7ff764175000-7ff764177000 rw-p 00000000 00:00 0 7fffcc9c6000-7fffcc9db000 rw-p 00000000 00:00 0 [stack] 7fffcc9ff000-7fffcca00000 r-xp 00000000 00:00 0 [vdso] ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0 [vsyscall]
