Re: [squid-users] Re: Intermittent SquidKerbAuth 'Cannot allocate memory'

>Can you look at the memory usage of the helper. I am aware of some
>underlying Kerberos library memory leaks.

Hi Markus,

I've not used valgrind before, but I think I've run it correctly using the
following:

Kinit [user]

valgrind /usr/lib/squid/squid_kerb_auth_test test-proxy1.fqdn 1 | valgrind
--log-file=/root/Desktop/squid_kerb_auth_test-1.val --leak-check=full
--show-reachable=yes -v /usr/lib/squid/squid_kerb_auth -d

Results of log file at end of this post. However, the output (not in the
logfile) on screen during the run differs..

[TOKEN]
BH Invalid request
==21474==
==21474== HEAP SUMMARY:
==21474== in use at exit: 8,419 bytes in 130 blocks
==21474== total heap usage: 1,546 allocs, 1,416 frees, 204,494 bytes
allocated
==21474==
==21474== LEAK SUMMARY:
==21474== definitely lost: 1,776 bytes in 2 blocks
==21474== indirectly lost: 17 bytes in 2 blocks
==21474== possibly lost: 0 bytes in 0 blocks
==21474== still reachable: 6,626 bytes in 126 blocks
==21474== suppressed: 0 bytes in 0 blocks
==21474== Rerun with --leak-check=full to see details of leaked memory
==21474==
==21474== For counts of detected and suppressed errors, rerun with: -v
==21474== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 25 from 10)
BH input error
You have new mail in /var/spool/mail/root

Regards,
Nick

==21105== Memcheck, a memory error detector
==21105== Copyright (C) 2002-2009, and GNU GPL'd, by Julian Seward et al.
==21105== Using Valgrind-3.5.0 and LibVEX; rerun with -h for copyright info
==21105== Command: /usr/lib/squid/squid_kerb_auth -d
==21105== Parent PID: 19963
==21105==
--21105--
--21105-- Valgrind options:
--21105-- --log-file=/root/Desktop/squid_kerb_auth_test-1.val
--21105-- --leak-check=full
--21105-- --show-reachable=yes
--21105-- -v
--21105-- Contents of /proc/version:
--21105-- Linux version 2.6.18-194.26.1.el5PAE
(mockbuild_at_x86-002.build.bos.redhat.com) (gcc version 4.1.2 20080704 (Red
Hat 4.1.2-48)) #1 SMP Fri Oct 29 14:28:58 EDT 2010
--21105-- Arch and hwcaps: X86, x86-sse1-sse2
--21105-- Page sizes: currently 4096, max supported 4096
--21105-- Valgrind library directory: /usr/lib/valgrind
--21105-- Reading syms from /lib/ld-2.5.so (0x531000)
--21105-- Reading syms from /usr/lib/squid/squid_kerb_auth (0x8048000)
--21105-- Reading syms from /usr/lib/valgrind/memcheck-x86-linux
(0x38000000)
--21105-- object doesn't have a dynamic symbol table
--21105-- Reading suppressions file: /usr/lib/valgrind/default.supp
--21105-- REDIR: 0x546730 (index) redirected to 0x3803e483
(vgPlain_x86_linux_REDIR_FOR_index)
--21105-- Reading syms from /usr/lib/valgrind/vgpreload_core-x86-linux.so
(0x4001000)
--21105-- Reading syms from
/usr/lib/valgrind/vgpreload_memcheck-x86-linux.so (0x4003000)
==21105== WARNING: new redirection conflicts with existing -- ignoring it
--21105-- new: 0x00546730 (index ) R-> 0x04006640 index
--21105-- REDIR: 0x5468d0 (strlen) redirected to 0x4006820 (strlen)
--21105-- Reading syms from /usr/lib/libgssapi_krb5.so.2.2 (0x2cc000)
--21105-- object doesn't have a symbol table
--21105-- Reading syms from /usr/lib/libkrb5.so.3.3 (0x229000)
--21105-- object doesn't have a symbol table
--21105-- Reading syms from /usr/lib/libk5crypto.so.3.1 (0x200000)
--21105-- object doesn't have a symbol table
--21105-- Reading syms from /lib/libcom_err.so.2.1 (0xdc6000)
--21105-- object doesn't have a symbol table
--21105-- Reading syms from /lib/libc-2.5.so (0x550000)
--21105-- Reading syms from /usr/lib/libkrb5support.so.0.1 (0x2c1000)
--21105-- object doesn't have a symbol table
--21105-- Reading syms from /lib/libdl-2.5.so (0x6d6000)
--21105-- Reading syms from /lib/libkeyutils-1.2.so (0xdfb000)
--21105-- object doesn't have a symbol table
--21105-- Reading syms from /lib/libresolv-2.5.so (0xdcb000)
--21105-- Reading syms from /lib/libselinux.so.1 (0x718000)
--21105-- object doesn't have a symbol table
--21105-- Reading syms from /lib/libsepol.so.1 (0x732000)
--21105-- object doesn't have a symbol table
--21105-- REDIR: 0x5c06a0 (rindex) redirected to 0x4006550 (rindex)
--21105-- REDIR: 0x5bbe30 (malloc) redirected to 0x400587e (malloc)
--21105-- REDIR: 0x5c1040 (memchr) redirected to 0x40069f0 (memchr)
--21105-- REDIR: 0x5c1a30 (memcpy) redirected to 0x4007a70 (memcpy)
--21105-- REDIR: 0x5c0300 (strlen) redirected to 0x4006800 (strlen)
--21105-- REDIR: 0x5b9990 (free) redirected to 0x4005498 (free)
--21105-- REDIR: 0x5c15a0 (mempcpy) redirected to 0x40072d0 (mempcpy)
--21105-- REDIR: 0x5bc2a0 (realloc) redirected to 0x400592d (realloc)
--21105-- REDIR: 0x5c1540 (memset) redirected to 0x4006b80 (memset)
--21105-- REDIR: 0x5bfc30 (index) redirected to 0x40065e0 (index)
--21105-- REDIR: 0x5bfe10 (strcpy) redirected to 0x4007d00 (strcpy)
--21105-- REDIR: 0x5bfda0 (strcmp) redirected to 0x40068d0 (strcmp)
--21105-- REDIR: 0x5c23b0 (strchrnul) redirected to 0x4006c60 (strchrnul)
--21105-- REDIR: 0x5c04f0 (strncmp) redirected to 0x4006860 (strncmp)
--21105-- REDIR: 0x5c05f0 (strncpy) redirected to 0x4007be0 (strncpy)
--21105-- REDIR: 0x5c1730 (stpcpy) redirected to 0x4007550 (stpcpy)
--21105-- REDIR: 0x5bbaf0 (calloc) redirected to 0x4004b8e (calloc)
--21105-- Reading syms from /lib/libnss_files-2.5.so (0x4419000)
--21105-- REDIR: 0x5c22e0 (rawmemchr) redirected to 0x4006c90 (rawmemchr)
--21105-- Discarding syms at 0x441a8e0-0x4421284 in
/lib/libnss_files-2.5.so due to munmap()
==21105==
==21105== HEAP SUMMARY:
==21105== in use at exit: 35 bytes in 1 blocks
==21105== total heap usage: 113 allocs, 112 frees, 14,259 bytes allocated
==21105==
==21105== Searching for pointers to 1 not-freed blocks
==21105== Checked 159,936 bytes
==21105==
==21105== 35 bytes in 1 blocks are still reachable in loss record 1 of 1
==21105== at 0x4005903: malloc (vg_replace_malloc.c:195)
==21105== by 0x8049438: main (squid_kerb_auth.c:297)
==21105==
==21105== LEAK SUMMARY:
==21105== definitely lost: 0 bytes in 0 blocks
==21105== indirectly lost: 0 bytes in 0 blocks
==21105== possibly lost: 0 bytes in 0 blocks
==21105== still reachable: 35 bytes in 1 blocks
==21105== suppressed: 0 bytes in 0 blocks
==21105==
==21105== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 24 from 10)
--21105--
--21105-- used_suppression: 24 dl-hack3
==21105==
==21105== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 24 from 10)

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Received on Mon Jan 10 2011 - 14:10:08 MST