Crash when using lyd_parse_data_mem

[AeroFlorian]

Version used : devel 2.0.188
Previous working version: devel 2.0.116

Here is the stack:
#4 0x00007f3c68b90476 in get_node_pos (node=0x7f3c54066ed0, node_type=LYXP_NODE_ELEM,
root=0x7f3c5404a1a0, root_type=LYXP_NODE_ROOT_CONFIG, prev=0x7f3c5f7fc5e8,
prev_pos=0x7f3c5f7fc5e0) at /opt/dev/libyang/src/xpath.c:1363
#5 0x00007f3c68b9075b in set_assign_pos (set=0x7f3c5f7fce80, root=0x7f3c5404a1a0,
root_type=LYXP_NODE_ROOT_CONFIG) at /opt/dev/libyang/src/xpath.c:1434
#6 0x00007f3c68b90f53 in set_sort (set=0x7f3c5f7fce80) at /opt/dev/libyang/src/xpath.c:1658
#7 0x00007f3c68b9c757 in moveto_node (set=0x7f3c5f7fce80, moveto_mod=0x557018b161f0,
ncname=0x557018b23340 "tx-array-carriers", options=2) at /opt/dev/libyang/src/xpath.c:5589
#8 0x00007f3c68ba0efc in eval_name_test_with_predicate (exp=0x557018b566a0,
tok_idx=0x7f3c5f7fcdda, attr_axis=0 '\000', all_desc=0 '\000', set=0x7f3c5f7fce80,
options=2) at /opt/dev/libyang/src/xpath.c:7344
#9 0x00007f3c68ba1842 in eval_relative_location_path (exp=0x557018b566a0,
tok_idx=0x7f3c5f7fcdda, all_desc=0 '\000', set=0x7f3c5f7fce80, options=2)
at /opt/dev/libyang/src/xpath.c:7516
#10 0x00007f3c68ba1acf in eval_absolute_location_path (exp=0x557018b566a0,
tok_idx=0x7f3c5f7fcdda, set=0x7f3c5f7fce80, options=2) at /opt/dev/libyang/src/xpath.c:7585
#11 0x00007f3c68ba366e in eval_path_expr (exp=0x557018b566a0, tok_idx=0x7f3c5f7fcdda,
set=0x7f3c5f7fce80, options=2) at /opt/dev/libyang/src/xpath.c:8005
--Type for more, q to quit, c to continue without paging--
#12 0x00007f3c68ba5a8e in eval_expr_select (exp=0x557018b566a0, tok_idx=0x7f3c5f7fcdda,
etype=LYXP_EXPR_EQUALITY, set=0x7f3c5f7fce80, options=2)
at /opt/dev/libyang/src/xpath.c:8660
#13 0x00007f3c68ba4c68 in eval_equality_expr (exp=0x557018b566a0, tok_idx=0x7f3c5f7fcdda,
repeat=1, set=0x7f3c5f7fce80, options=2) at /opt/dev/libyang/src/xpath.c:8415
#14 0x00007f3c68ba59b7 in eval_expr_select (exp=0x557018b566a0, tok_idx=0x7f3c5f7fcdda,
etype=LYXP_EXPR_NONE, set=0x7f3c5f7fce80, options=2) at /opt/dev/libyang/src/xpath.c:8642
#15 0x00007f3c68ba34aa in eval_path_expr (exp=0x557018b566a0, tok_idx=0x7f3c5f7fcdda,
set=0x7f3c5f7fce80, options=2) at /opt/dev/libyang/src/xpath.c:7963
#16 0x00007f3c68ba5a8e in eval_expr_select (exp=0x557018b566a0, tok_idx=0x7f3c5f7fcdda,
etype=LYXP_EXPR_AND, set=0x7f3c5f7fce80, options=2) at /opt/dev/libyang/src/xpath.c:8660
#17 0x00007f3c68ba5127 in eval_and_expr (exp=0x557018b566a0, tok_idx=0x7f3c5f7fcdda, repeat=1,
set=0x7f3c5f7fce80, options=2) at /opt/dev/libyang/src/xpath.c:8482
#18 0x00007f3c68ba5991 in eval_expr_select (exp=0x557018b566a0, tok_idx=0x7f3c5f7fcdda,
etype=LYXP_EXPR_NONE, set=0x7f3c5f7fce80, options=2) at /opt/dev/libyang/src/xpath.c:8639
#19 0x00007f3c68ba5f74 in lyxp_eval (ctx=0x5570189de010, exp=0x557018b566a0,
cur_mod=0x557018b161f0, format=LY_VALUE_SCHEMA_RESOLVED, prefix_data=0x557018b569b8,
ctx_node=0x7f3c54080ac0, tree=0x7f3c5404a1a0, vars=0x0, set=0x7f3c5f7fce80, options=2)
at /opt/dev/libyang/src/xpath.c:8761
#20 0x00007f3c68ba7264 in lyd_validate_node_when (tree=0x7f3c5404a1a0, node=0x7f3c54080ac0,
schema=0x557018b565e0, xpath_options=0, disabled=0x7f3c5f7fcfa0)
at /opt/dev/libyang/src/validation.c:154
--Type for more, q to quit, c to continue without paging--
#21 0x00007f3c68ba877e in lyd_validate_dummy_when (first=0x7f3c54065090,
parent=0x7f3c54065040, snode=0x557018b565e0, disabled=0x7f3c5f7fcfa0)
at /opt/dev/libyang/src/validation.c:741
#22 0x00007f3c68ba88e7 in lyd_validate_mandatory (first=0x7f3c54065090, parent=0x7f3c54065040,
snode=0x557018b565e0) at /opt/dev/libyang/src/validation.c:787
#23 0x00007f3c68ba9a11 in lyd_validate_siblings_schema_r (first=0x7f3c54065090,
parent=0x7f3c54065040, sparent=0x557018b557e0, mod=0x0, val_opts=0, int_opts=0)
at /opt/dev/libyang/src/validation.c:1184
#24 0x00007f3c68baa4a5 in lyd_validate_final_r (first=0x7f3c54065090, parent=0x7f3c54065040,
sparent=0x557018b557e0, mod=0x0, val_opts=0, int_opts=0, must_xp_opts=0)
at /opt/dev/libyang/src/validation.c:1391
#25 0x00007f3c68baa52c in lyd_validate_final_r (first=0x7f3c54063a70, parent=0x7f3c5404def0,
sparent=0x557018b4e590, mod=0x0, val_opts=0, int_opts=0, must_xp_opts=0)
at /opt/dev/libyang/src/validation.c:1400
#26 0x00007f3c68baa52c in lyd_validate_final_r (first=0x7f3c5404def0, parent=0x0, sparent=0x0,
mod=0x557018b161f0, val_opts=0, int_opts=0, must_xp_opts=0)
at /opt/dev/libyang/src/validation.c:1400
#27 0x00007f3c68bab011 in lyd_validate (tree=0x7f3c5f7fd550, module=0x0, ctx=0x5570189de010,
val_opts=0, validate_subtree=0 '\000', node_when_p=0x7f3c54054348,
node_types_p=0x7f3c54054358, meta_types_p=0x7f3c54054368, ext_val_p=0x7f3c54054378,
diff=0x0) at /opt/dev/libyang/src/validation.c:1605
#28 0x00007f3c68ac4ba4 in lyd_parse (ctx=0x5570189de010, ext=0x0, parent=0x0,
--Type for more, q to quit, c to continue without paging--
first_p=0x7f3c5f7fd550, in=0x7f3c5400dd60, format=LYD_XML, parse_opts=131072, val_opts=0,
op=0x0) at /opt/dev/libyang/src/tree_data.c:391
#29 0x00007f3c68ac4fed in lyd_parse_data (ctx=0x5570189de010, parent=0x0, in=0x7f3c5400dd60,
format=LYD_XML, parse_options=131072, validate_options=0, tree=0x7f3c5f7fd550)
at /opt/dev/libyang/src/tree_data.c:444
#30 0x00007f3c68ac5070 in lyd_parse_data_mem (ctx=0x5570189de010,
data=0x7f3c644d8037 "<yang-library xmlns="urn:ietf:params:xml:ns:yang:ietf-yang-library">\n 61\n \n complete\n \n\n<modules-state xmlns="urn:ietf:param"..., format=LYD_XML, parse_options=131072,
validate_options=0, tree=0x7f3c5f7fd550) at /opt/dev/libyang/src/tree_data.c:455

I can share the xml used via mail ([email protected])

[michalvasko]

I think I will need to reproduce it to fix, please send the YANG/data to the email in my profile.

[michalvasko]

Thanks for the nice example, was actually quite a minor bug. And it was not exposed before only because it was hidden by another bug that I have fixed recently.

[AeroFlorian]

Perfect, will reproduce with the example before closing.
Thanks for the amazing support