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46ae5568fa
Fix the following error observed running samba.test.registry
compiled with clang-17 and UBsan:
lib/ldb/common/ldb_ldif.c:881:9: runtime error: applying non-zero offset 137438953440 to null pointer
#0 0x7faa0eb3932f in ldb_ldif_read lib/ldb/common/ldb_ldif.c:881
#1 0x7faa0eb3aec6 in ldb_ldif_read_string lib/ldb/common/ldb_ldif.c:1004
#2 0x7faa077ed759 in dsdb_set_schema_from_ldif source4/dsdb/schema/schema_set.c:1113
#3 0x7faa068fcbbf in py_dsdb_set_schema_from_ldif source4/dsdb/pydsdb.c:929
#4 0x7faa1d1d4507 in cfunction_call (/lib64/libpython3.11.so.1.0+0x1d4507)
[... a lot of Python calls skipped...]
I.e. number of elements should be checked against zero
before making an attempt to access an element by index.
Signed-off-by: Dmitry Antipov <dantipov@cloudlinux.com>
Reviewed-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
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|---|---|---|
| .. | ||
| attrib_handlers.c | ||
| ldb_attributes.c | ||
| ldb_controls.c | ||
| ldb_debug.c | ||
| ldb_dn.c | ||
| ldb_ldif.c | ||
| ldb_match.c | ||
| ldb_modules.c | ||
| ldb_msg.c | ||
| ldb_options.c | ||
| ldb_pack.c | ||
| ldb_parse.c | ||
| ldb_utf8.c | ||
| ldb.c | ||
| qsort.c | ||