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https://issues.apache.org/jira/browse/SVN-4470?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Julian Foad closed SVN-4470.
----------------------------
Fix Version/s: (was: ---)
1.8.9
Resolution: Fixed
Closing. According to earlier comments, the fix was tested, applied and
backported.
> Memcached+FullText cache is totally broken in svnserve
> ------------------------------------------------------
>
> Key: SVN-4470
> URL: https://issues.apache.org/jira/browse/SVN-4470
> Project: Subversion
> Issue Type: Bug
> Components: libsvn_subr
> Affects Versions: 1.8.x
> Environment: Linux
> Reporter: Subversion Importer
> Priority: Critical
> Fix For: 1.8.9
>
>
> {noformat:nopanel=true}
> Problem:
> Enabling memcached with full text caches in version 1.8.5. causes svnserve -t
> segfault just after first cache
> hit to memcached.
> Reason:
> memcache_get lack deserialiser for memcached full texts, and uses default
> one, which returns svn_string_t*
> in first parameter (thru void**) at cache-memcache.c:206.
> This value is returned as void** thru svn_cache__get at cache.c:67 to
> read_representation at
> temp_serializer.c:5298
> read_representation interpret this void** as svn_stringbuf_t* and puts this
> value into stream baton.
> baton is used in read_handler_stringbuf at in stream.c:1397 and cause crash
> (because len and data in
> svn_string_t and svn_stringbuf_t are effectively changed places)
> Traceback:
> #0 0x00007ffff58ea932 in memcpy () from /lib64/libc.so.6
> #1 0x00007ffff73427cc in read_handler_stringbuf (baton=0x81ed98,
> buffer=<value optimized out>,
> len=0x81eb38)
> at /usr/include/bits/string3.h:52
> #2 0x00007fffed579f6d in get_dir_contents (entries_p=0x7fffffffdc60,
> fs=0x6451a8, noderev=0x6877a8,
> pool=0x81ca98)
> at subversion/libsvn_fs_fs/fs_fs.c:5524
> #3 svn_fs_fs__rep_contents_dir (entries_p=0x7fffffffdc60, fs=0x6451a8,
> noderev=0x6877a8,
> pool=0x81ca98)
> at subversion/libsvn_fs_fs/fs_fs.c:5679
> #4 0x00007fffed57a47d in svn_fs_fs__rep_contents_dir_entry
> (dirent=0x7fffffffdcf8, fs=0x6451a8,
> noderev=0x6877a8,
> name=0x687940 "trunk", result_pool=0x81ca98, scratch_pool=0x81ca98) at
> subversion/libsvn_fs_fs/fs_fs.c:5727
> #5 0x00007fffed5686ac in svn_fs_fs__dag_dir_entry (dirent=0x7fffffffdcf8,
> node=0x687720,
> name=0x687940 "trunk", pool=0x81ca98)
> at subversion/libsvn_fs_fs/dag.c:445
> #6 0x00007fffed5686e9 in dir_entry_id_from_node (child_p=0x7fffffffddd8,
> parent=0x687720, name=
> <value optimized out>,
> result_pool=0x6872b8, scratch_pool=<value optimized out>) at
> subversion/libsvn_fs_fs/dag.c:315
> #7 svn_fs_fs__dag_open (child_p=0x7fffffffddd8, parent=0x687720, name=<value
> optimized out>,
> result_pool=0x6872b8,
> scratch_pool=<value optimized out>) at subversion/libsvn_fs_fs/dag.c:1164
> #8 0x00007fffed583a77 in open_path (parent_path_p=0x7fffffffde38,
> root=0x81c0b0, path=0x6874c8
> "/trunk/arcadia", flags=6,
> txn_id=0x0, pool=0x6872b8) at subversion/libsvn_fs_fs/tree.c:1006
> #9 0x00007fffed583ecb in get_dag (dag_node_p=0x7fffffffde78, root=0x81c0b0,
> path=0x6874c8
> "/trunk/arcadia", needs_lock_cache=0,
> pool=0x6872b8) at subversion/libsvn_fs_fs/tree.c:1213
> #10 0x00007fffed583fda in svn_fs_fs__node_id (id_p=0x7fffffffdea8,
> root=<value optimized out>, path=
> <value optimized out>,
> pool=0x6872b8) at subversion/libsvn_fs_fs/tree.c:1284
> #11 0x00007fffed58407b in node_kind (kind_p=0x7fffffffdefc, root=0x81c0b0,
> path=<value optimized
> out>, pool=0x6872b8)
> at subversion/libsvn_fs_fs/tree.c:1333
> #12 svn_fs_fs__check_path (kind_p=0x7fffffffdefc, root=0x81c0b0, path=<value
> optimized out>,
> pool=0x6872b8)
> at subversion/libsvn_fs_fs/tree.c:1352
> #13 0x000000000040c933 in check_path (conn=0x633000, pool=0x6872b8,
> params=<value optimized
> out>, baton=0x7fffffffe040)
> at subversion/svnserve/serve.c:2280
> #14 0x00007ffff707f063 in svn_ra_svn__handle_commands2 (conn=0x633000,
> pool=<value optimized
> out>, commands=<value optimized out>,
> baton=0x7fffffffe040, error_on_disconnect=0) at
> subversion/libsvn_ra_svn/marshal.c:1494
> #15 0x000000000040bc2d in serve (conn=0x633000, params=<value optimized out>,
> pool=0x627508)
> at subversion/svnserve/serve.c:3678
> #16 0x000000000040fa5f in main (argc=<value optimized out>, argv=<value
> optimized out>) at
> subversion/svnserve/svnserve.c:844
> {noformat}
> Original issue reported by *anatolix*
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