[Pkg-samba-maint] Bug#538819: Memory leak ins smbd processes
klxout
klxout at gmail.com
Tue Sep 15 14:42:20 UTC 2009
Results:
# valgrind --trace-children=yes --leak-check=full /usr/sbin/smbd
==2370== Memcheck, a memory error detector.
==2370== Copyright (C) 2002-2007, and GNU GPL'd, by Julian Seward et al.
==2370== Using LibVEX rev 1854, a library for dynamic binary translation.
==2370== Copyright (C) 2004-2007, and GNU GPL'd, by OpenWorks LLP.
==2370== Using valgrind-3.3.1-Debian, a dynamic binary instrumentation
framework.
==2370== Copyright (C) 2000-2007, and GNU GPL'd, by Julian Seward et al.
==2370== For more details, rerun with: -v
==2370==
==2370==
==2370== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 19 from 2)
==2370== malloc/free: in use at exit: 353,195 bytes in 395 blocks.
==2370== malloc/free: 1,005 allocs, 610 frees, 411,722 bytes allocated.
==2370== For counts of detected errors, rerun with: -v
==2370== searching for pointers to 395 not-freed blocks.
==2370== checked 683,040 bytes.
==2370==
==2370== 15 bytes in 1 blocks are definitely lost in loss record 2 of 30
==2370== at 0x4C2360E: malloc (vg_replace_malloc.c:207)
==2370== by 0x7917D71: strdup (in /lib/libc-2.7.so)
==2370== by 0x5A6D7B: string_set (in /usr/sbin/smbd)
==2370== by 0x478820: (within /usr/sbin/smbd)
==2370== by 0x47BA1D: lp_load_ex (in /usr/sbin/smbd)
==2370== by 0x47C328: lp_load_initial_only (in /usr/sbin/smbd)
==2370== by 0x46FE57: main (in /usr/sbin/smbd)
==2370==
==2370==
==2370== 85 bytes in 1 blocks are possibly lost in loss record 6 of 30
==2370== at 0x4C2360E: malloc (vg_replace_malloc.c:207)
==2370== by 0x748F80A: talloc_strdup (in /usr/lib/libtalloc.so.1.2.0)
==2370== by 0x5AEEDB: get_myname (in /usr/sbin/smbd)
==2370== by 0x5AEF00: myhostname (in /usr/sbin/smbd)
==2370== by 0x4787A9: (within /usr/sbin/smbd)
==2370== by 0x47BA1D: lp_load_ex (in /usr/sbin/smbd)
==2370== by 0x47C328: lp_load_initial_only (in /usr/sbin/smbd)
==2370== by 0x46FE57: main (in /usr/sbin/smbd)
==2370==
==2370==
==2370== 216 bytes in 2 blocks are possibly lost in loss record 12 of 30
==2370== at 0x4C2360E: malloc (vg_replace_malloc.c:207)
==2370== by 0x74910F3: _talloc_zero (in /usr/lib/libtalloc.so.1.2.0)
==2370== by 0x5BD8FA: event_context_init (in /usr/sbin/smbd)
==2370== by 0x46F4AB: smbd_event_context (in /usr/sbin/smbd)
==2370== by 0x46F4DF: smbd_messaging_context (in /usr/sbin/smbd)
==2370== by 0x46FEB1: main (in /usr/sbin/smbd)
==2370==
==2370==
==2370== 920 (648 direct, 272 indirect) bytes in 3 blocks are definitely
lost in loss record 18 of 30
==2370== at 0x4C2360E: malloc (vg_replace_malloc.c:207)
==2370== by 0x7491575: _talloc_array (in /usr/lib/libtalloc.so.1.2.0)
==2370== by 0x5A6776: str_list_make (in /usr/sbin/smbd)
==2370== by 0x478DD1: (within /usr/sbin/smbd)
==2370== by 0x47BA1D: lp_load_ex (in /usr/sbin/smbd)
==2370== by 0x47C328: lp_load_initial_only (in /usr/sbin/smbd)
==2370== by 0x46FE57: main (in /usr/sbin/smbd)
==2370==
==2370== LEAK SUMMARY:
==2370== definitely lost: 663 bytes in 4 blocks.
==2370== indirectly lost: 272 bytes in 3 blocks.
==2370== possibly lost: 301 bytes in 3 blocks.
==2370== still reachable: 351,959 bytes in 385 blocks.
==2370== suppressed: 0 bytes in 0 blocks.
==2370== Reachable blocks (those to which a pointer was found) are not
shown.
==2370== To see them, rerun with: --leak-check=full --show-reachable=yes
SERVER:~# ==2371==
==2371== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 19 from 2)
==2371== malloc/free: in use at exit: 353,509 bytes in 400 blocks.
==2371== malloc/free: 1,031 allocs, 631 frees, 413,922 bytes allocated.
==2371== For counts of detected errors, rerun with: -v
==2371== searching for pointers to 400 not-freed blocks.
==2371== checked 683,392 bytes.
==2371==
==2371== 15 bytes in 1 blocks are definitely lost in loss record 2 of 30
==2371== at 0x4C2360E: malloc (vg_replace_malloc.c:207)
==2371== by 0x7917D71: strdup (in /lib/libc-2.7.so)
==2371== by 0x5A6D7B: string_set (in /usr/sbin/smbd)
==2371== by 0x478820: (within /usr/sbin/smbd)
==2371== by 0x47BA1D: lp_load_ex (in /usr/sbin/smbd)
==2371== by 0x47C328: lp_load_initial_only (in /usr/sbin/smbd)
==2371== by 0x46FE57: main (in /usr/sbin/smbd)
==2371==
==2371==
==2371== 85 bytes in 1 blocks are possibly lost in loss record 6 of 30
==2371== at 0x4C2360E: malloc (vg_replace_malloc.c:207)
==2371== by 0x748F80A: talloc_strdup (in /usr/lib/libtalloc.so.1.2.0)
==2371== by 0x5AEEDB: get_myname (in /usr/sbin/smbd)
==2371== by 0x5AEF00: myhostname (in /usr/sbin/smbd)
==2371== by 0x4787A9: (within /usr/sbin/smbd)
==2371== by 0x47BA1D: lp_load_ex (in /usr/sbin/smbd)
==2371== by 0x47C328: lp_load_initial_only (in /usr/sbin/smbd)
==2371== by 0x46FE57: main (in /usr/sbin/smbd)
==2371==
==2371==
==2371== 216 bytes in 2 blocks are possibly lost in loss record 12 of 30
==2371== at 0x4C2360E: malloc (vg_replace_malloc.c:207)
==2371== by 0x74910F3: _talloc_zero (in /usr/lib/libtalloc.so.1.2.0)
==2371== by 0x5BD8FA: event_context_init (in /usr/sbin/smbd)
==2371== by 0x46F4AB: smbd_event_context (in /usr/sbin/smbd)
==2371== by 0x46F4DF: smbd_messaging_context (in /usr/sbin/smbd)
==2371== by 0x46FEB1: main (in /usr/sbin/smbd)
==2371==
==2371==
==2371== 920 (648 direct, 272 indirect) bytes in 3 blocks are definitely
lost in loss record 18 of 30
==2371== at 0x4C2360E: malloc (vg_replace_malloc.c:207)
==2371== by 0x7491575: _talloc_array (in /usr/lib/libtalloc.so.1.2.0)
==2371== by 0x5A6776: str_list_make (in /usr/sbin/smbd)
==2371== by 0x478DD1: (within /usr/sbin/smbd)
==2371== by 0x47BA1D: lp_load_ex (in /usr/sbin/smbd)
==2371== by 0x47C328: lp_load_initial_only (in /usr/sbin/smbd)
==2371== by 0x46FE57: main (in /usr/sbin/smbd)
==2371==
==2371== LEAK SUMMARY:
==2371== definitely lost: 663 bytes in 4 blocks.
==2371== indirectly lost: 272 bytes in 3 blocks.
==2371== possibly lost: 301 bytes in 3 blocks.
==2371== still reachable: 352,273 bytes in 390 blocks.
==2371== suppressed: 0 bytes in 0 blocks.
==2371== Reachable blocks (those to which a pointer was found) are not
shown.
==2371== To see them, rerun with: --leak-check=full --show-reachable=yes
thanks
2009/9/12 Steve Langasek <vorlon at debian.org>
> On Thu, Sep 10, 2009 at 04:46:18PM +0200, klxout wrote:
> > Valgrind results:
>
> > output: # valgrind /usr/sbin/smbd
>
> Sorry, I think we're going to need the output of valgrind
> --trace-children=yes --leak-check=full /usr/sbin/smbd; the output you've
> sent seems to only shows memory leaked by the initial process before
> daemonization, and we need to find out what memory is being leaked by the
> long-running processes.
>
> --
> Steve Langasek Give me a lever long enough and a Free OS
> Debian Developer to set it on, and I can move the world.
> Ubuntu Developer http://www.debian.org/
> slangasek at ubuntu.com vorlon at debian.org
>
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