samba-bugs@samba.org
2005-Jun-09 18:01 UTC
[Bug 2785] New: rsync gives following error: buffer overflow in receive_file_entry
https://bugzilla.samba.org/show_bug.cgi?id=2785 Summary: rsync gives following error: buffer overflow in receive_file_entry Product: rsync Version: 2.6.3 Platform: All OS/Version: All Status: NEW Severity: major Priority: P3 Component: core AssignedTo: wayned@samba.org ReportedBy: carnesresearchcenter@gmail.com QAContact: rsync-qa@samba.org If I execute the following command: rsync -vrptgz --rsh="ssh $BCPSERVER rsync rsyncd --daemon -- config=$RSYNCDCONFIGFILE --port=$RSYNCDPORT" --rsync-path=$RSYNCPATH $RSYNCSOURCE $LOGNAME@$BCPSERVER::$RSYNCDESTINATIONMODULE and I have a symbolic link in the directory represented by $RSYNCSOURCE then I get the following output: building file list ... 5 files to consider overflow: linkname_len=1862797370 ERROR: buffer overflow in receive_file_entry rsync error: error allocating core memory buffers (code 22) at util.c(126) rsync: connection unexpectedly closed (4 bytes received so far) [sender] rsync error: error in rsync protocol data stream (code 12) at io.c(359) If I add the -l option to the command then rsync seems to complete fine however the symbolic links that have the following pattern symlink -> /foo/bar get rsynced to symlink -> foo/bar. I looked at the source and I have found the code that generated the errors that I see. below is the code section from flist.c: #if SUPPORT_LINKS if (preserve_links && S_ISLNK(mode)) { linkname_len = read_int(f) + 1; /* count the '\0' */ if (linkname_len <= 0 || linkname_len > MAXPATHLEN) { rprintf(FERROR, "overflow: linkname_len=%d\n", linkname_len - 1); overflow("receive_file_entry"); } } else #endif I cannot figure out why we are actually executing this section of code if our preserve_links && S_ISLNK variables are not set to 1, which I do not see that they are given the rsync arguments that we are using. -- Configure bugmail: https://bugzilla.samba.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the QA contact for the bug, or are watching the QA contact.
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