[syslog-ng] [Bug 271] New: using json parser twice in two unnested log statements causes segfault

[bugzilla at bugzilla.balabit.com]

https://bugzilla.balabit.com/show_bug.cgi?id=271

           Summary: using json parser twice in two unnested log statements
                    causes segfault
           Product: syslog-ng
           Version: 3.5.x
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: unspecified
         Component: syslog-ng
        AssignedTo: bazsi at balabit.hu
        ReportedBy: bugzilla.balabit at faxm0dem.org
Type of the Report: ---
   Estimated Hours: 0.0


Created an attachment (id=91)
 --> (https://bugzilla.balabit.com/attachment.cgi?id=91)
minimal configuration to trigger segfault

The attached configuration causes a segfault on startup (before any messages make it to source).
Here's a stack trace:
--
(gdb) bt full
#0  0x00007fd54fe6e86f in __strlen_sse42 () from /lib64/libc.so.6
No symbol table info available.
#1  0x00007fd54d2c9766 in log_json_parser_set_marker () from /lib64/syslog-ng/libjson-plugin.so
No symbol table info available.
#2  0x00007fd54d2c9e1b in log_json_parser_clone () from /lib64/syslog-ng/libjson-plugin.so
No symbol table info available.
#3  0x00007fd551884a1e in log_pipe_clone () from /lib64/libsyslog-ng-3.5.3.so
No symbol table info available.
#4  0x00007fd55188560c in cfg_tree_compile_single () from /lib64/libsyslog-ng-3.5.3.so
No symbol table info available.
#5  0x00007fd551886224 in cfg_tree_compile_node () from /lib64/libsyslog-ng-3.5.3.so
No symbol table info available.
#6  0x00007fd551885c02 in cfg_tree_compile_sequence () from /lib64/libsyslog-ng-3.5.3.so
No symbol table info available.
#7  0x00007fd551886267 in cfg_tree_compile_node () from /lib64/libsyslog-ng-3.5.3.so
No symbol table info available.
#8  0x00007fd551885a98 in cfg_tree_compile_reference () from /lib64/libsyslog-ng-3.5.3.so
No symbol table info available.
#9  0x00007fd551886247 in cfg_tree_compile_node () from /lib64/libsyslog-ng-3.5.3.so
No symbol table info available.
#10 0x00007fd551885c02 in cfg_tree_compile_sequence () from /lib64/libsyslog-ng-3.5.3.so
No symbol table info available.
#11 0x00007fd551886267 in cfg_tree_compile_node () from /lib64/libsyslog-ng-3.5.3.so
No symbol table info available.
#12 0x00007fd551886306 in cfg_tree_compile_rule () from /lib64/libsyslog-ng-3.5.3.so
No symbol table info available.
#13 0x00007fd551886639 in cfg_tree_compile () from /lib64/libsyslog-ng-3.5.3.so
No symbol table info available.
#14 0x00007fd55188667d in cfg_tree_start () from /lib64/libsyslog-ng-3.5.3.so
No symbol table info available.
#15 0x00007fd55188045d in cfg_init () from /lib64/libsyslog-ng-3.5.3.so
No symbol table info available.
#16 0x00007fd55189cc8a in main_loop_initialize_state () from /lib64/libsyslog-ng-3.5.3.so
No symbol table info available.
#17 0x00007fd55189d253 in main_loop_init () from /lib64/libsyslog-ng-3.5.3.so
No symbol table info available.
#18 0x0000000000401805 in main ()
No symbol table info available.


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