Exception happening while parsing deviation file

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0xf2e37b70 (LWP 86474)]
0xf7604185 in __strlen_sse2 () from /lib/libc.so.6
(gdb) bt
#0 0xf7604185 in strlen_sse2 () from /lib/libc.so.6
#1 0xf2e95da2 in lydict_remove (ctx=0x81e50f0, value=0x656e2d66 <Address 0x656e2d66 out of bounds>) at dict.c:123
#2 0xf2f1b773 in lys_restr_free (ctx=0x81e50f0, restr=0x81e9240, private_destructor=0x0) at tree_schema.c:1321
#3 0xf2f1ba34 in lys_type_free (ctx=0x81e50f0, type=0x820b628, private_destructor=0x0) at tree_schema.c:1982
#4 0xf2f1a9e5 in lys_leaf_free (private_destructor=, leaf=, ctx=) at tree_schema.c:2183
#5 lys_node_free (node=0x820b5e8, private_destructor=0x0, shallow=1) at tree_schema.c:2434
#6 0xf2f1c6de in lys_deviation_free (private_destructor=, dev=, module=) at tree_schema.c:2321
#7 module_free_common (module=0x81fd510, private_destructor=0x0) at tree_schema.c:2668
#8 0xf2f1cdf2 in lys_free (module=0x81fd510, private_destructor=0x0, remove_from_ctx=1) at tree_schema.c:3430
#9 0xf2eda7d2 in yin_read_module (ctx=0x81e50f0, yin=0x8204548, revision=0x0, implement=1) at parser_yin.c:7089
#10 0xf2edd1b7 in yin_read_module (ctx=0x81e50f0,
data=0xf1ea4000 "\r\n\r\n<module xmlns="urn:ietf:params:xml:ns:yang:yin:1" name="ietf-netconf-acm-deviations-cx" xmlns:inet="urn:ietf:params:xml:ns:yang:ietf-netconf-acm-deviations-cx"..., revision=0x0, implement=1) at parser_yin.c:7106
#11 0xf2f21309 in lys_parse_mem (ctx=0x81e50f0,
data=0xf1ea4000 "\r\n\r\n<module xmlns="urn:ietf:params:xml:ns:yang:yin:1" name="ietf-netconf-acm-deviations-cx" xmlns:inet="urn:ietf:params:xml:ns:yang:ietf-netconf-acm-deviations-cx"..., format=LYS_IN_YIN, internal=1, implement=1) at tree_schema.c:961

Is it a valid issue..please check..

[michalvasko]

Hi,
you will need to provide the moduel that caused this or at least the part that caused this so I can reproduce it. Also, what libyang version did you use?

Regards,
Michal

I have defined one node like this:
<leaf name="name"> <type name="string"> <length value="1..max"/> </type> <description> <text>Arbitrary name assigned to the rule-list.</text> </description> </leaf>

In deviation file i want to restrict the length to 15, hence i added like this:
<deviation target-node="/nacm:nacm/nacm:rule-list/nacm:name"> ==> this name is the node <deviate value="replace"> <type name="string"> <length value="1..15"/> </type> </deviate> </deviation>

But during parsing it is giving exception:
#0 0xf75b4185 in strlen_sse2 () from /lib/libc.so.6
#1 0xf2f40de2 in lydict_remove (ctx=0x81e0298, value=0x656e2d66 <Address 0x656e2d66 out of bounds>) at dict.c:123
#2 0xf2fc6803 in lys_restr_free (ctx=0x81e0298, restr=0x81e4f20, private_destructor=0x0) at tree_schema.c:1321
#3 0xf2fc6ac4 in lys_type_free (ctx=0x81e0298, type=0x8206690, private_destructor=0x0) at tree_schema.c:1982
#4 0xf2fc5a75 in lys_leaf_free (private_destructor=, leaf=, ctx=) at tree_schema.c:2183
#5 lys_node_free (node=0x8206650, private_destructor=0x0, shallow=1) at tree_schema.c:2434
#6 0xf2fc776e in lys_deviation_free (private_destructor=, dev=, module=) at tree_schema.c:2321
#7 module_free_common (module=0x81f8730, private_destructor=0x0) at tree_schema.c:2668
#8 0xf2fc7e82 in lys_free (module=0x81f8730, private_destructor=0x0, remove_from_ctx=1) at tree_schema.c:3430
#9 0xf2f85862 in yin_read_module (ctx=0x81e0298, yin=0x81f3208, revision=0x0, implement=1) at parser_yin.c:7089
#10 0xf2f88247 in yin_read_module (ctx=0x81e0298,
data=0xf1df0000 "\n<module xmlns:nacm-devs-cx="urn:ietf:params:xml:ns:yang:ietf-netconf-acm-deviations-cx" xmlns="urn:ietf:params:xml:ns:yang:yin:1" name="ietf-netconf-acm-deviatio"...,
revision=0x0, implement=1) at parser_yin.c:7106
#11 0xf2fcc399 in lys_parse_mem (ctx=0x81e0298,
data=0xf1df0000 "\n<module xmlns:nacm-devs-cx="urn:ietf:params:xml:ns:yang:ietf-netconf-acm-deviations-cx" xmlns="urn:ietf:params:xml:ns:yang:yin:1" name="ietf-netconf-acm-deviatio"...,
format=LYS_IN_YIN, internal=1, implement=1) at tree_schema.c:961
#12 0xf2fcc503 in lys_parse_fd (ctx=0x81e0298, fd=34, format=LYS_IN_YIN) at tree_schema.c:1115
#13 0xf2fcc6ce in lys_parse_path (ctx=0x81e0298, path=0xf2ee1b18 "/home/ietf-netconf-acm-deviations-cx.yin", format=LYS_IN_YIN) at tree_schema.c:1052

Please help to check if i am doing anything wrong here?

[michalvasko]

Hi,
I have used this module

<?xml version="1.0" encoding="UTF-8"?>
<module name="dev"
        xmlns="urn:ietf:params:xml:ns:yang:yin:1">
    <namespace uri="urn:dev"/>
    <prefix value="d"/>
    <import module="ietf-netconf-acm">
        <prefix value="nacm"/>
    </import>
    <deviation target-node="/nacm:nacm/nacm:rule-list/nacm:name">
        <deviate value="replace">
            <type name="string">
                <length value="1..15"/>
            </type>
        </deviate>
    </deviation>
</module>

and did not find any problem so I will need your exact copy if I am to reproduce it. If it cannot be public, you can send it to me via email or try to isolate the problematic part.

Regards,
Michal