Here's a corresponding log from the client:
2024/01/23 09:38:27.27: 9 2: NdpQueryPathInfo in [0x342160] <Music\Pearl Jam\A.+,;=[].B>
2024/01/23 09:38:27.27: 9 2: dircache_find_path [Music\Pearl Jam\A.+,;=[].B]
2024/01/23 09:38:27.27: 9 2: dcFindPath: [Music\Pearl Jam][A.+,;=[].B]
2024/01/23 09:38:27.27: 9 2: dircache: FindPath Music\Pearl Jam\A.+,;=[].B not found
2024/01/23 09:38:27.27: 9 2: NdpQueryPathInfo pathparser for <\A.+,;=[].B> rc=0
2024/01/23 09:38:27.27: 9 2: NdpQueryPathInfo smbwrp_getattr for <\A.+,;=[].B>
2024/01/23 09:38:27.27: 4 2: getattr 0 16 <\A.+,;=[].B>
2024/01/23 09:38:27.27: 4 2: smbwrp_getattr, calling cli_qpathinfo3
2024/01/23 09:38:27.28: 9 2: NdpQueryPathInfo smbwrp_getattr, rc = 2
2024/01/23 09:38:27.28: 9 2: NdpQueryPathInfo <Music\Pearl Jam\A.+,;=[].B> (\A.+,;=[].B) 2
2024/01/23 09:38:27.28: 9 3: NdpQueryPathInfo in [0x317ac0] <Music\Pearl Jam\A.+,;=[].B>
2024/01/23 09:38:27.28: 9 3: dircache_find_path [Music\Pearl Jam\A.+,;=[].B]
2024/01/23 09:38:27.28: 9 3: dcFindPath: [Music\Pearl Jam][A.+,;=[].B]
2024/01/23 09:38:27.28: 9 3: dircache: FindPath Music\Pearl Jam\A.+,;=[].B not found
2024/01/23 09:38:27.28: 9 3: NdpQueryPathInfo pathparser for <\A.+,;=[].B> rc=0
2024/01/23 09:38:27.28: 9 3: NdpQueryPathInfo smbwrp_getattr for <\A.+,;=[].B>
2024/01/23 09:38:27.28: 4 3: getattr 0 16 <\A.+,;=[].B>
2024/01/23 09:38:27.28: 4 3: smbwrp_getattr, calling cli_qpathinfo3
2024/01/23 09:38:27.28: 9 3: NdpQueryPathInfo smbwrp_getattr, rc = 8
2024/01/23 09:38:27.28: 9 3: NdpQueryPathInfo <Music\Pearl Jam\A.+,;=[].B> (\A.+,;=[].B) 3
The WPS seems to try and open 'A.+,;=[].B' in each folder and somehow this triggers an OOM error in the server. Interesting....