s390/debug: Fix deadlock during unregister

These records connect through source-stated identifiers. Shared identifiers or dates alone do not establish shared exposure, root cause or applicability.

CVE-2026-90209 · Microsoft / collected KEV context

cve-program · CVE-2026-90209

• https://git.kernel.org/stable/c/a214c3dacc779b2afcb0ac9c8001e45ee4ffb2ed
• https://git.kernel.org/stable/c/183f8f6d64bb0510070c856b9927618c53014a7b
• https://git.kernel.org/stable/c/a08b70ed2d1ec907353a72f15163b8e34ff4b2f8
• https://git.kernel.org/stable/c/45bb341d1b73eb293e0dd43d9b72bbc8b615d0ba
• https://git.kernel.org/stable/c/5d83f3faa3fb7f23f298cfd40382611999de5d1d
• https://git.kernel.org/stable/c/54e1259b75d6402a1d0cfb822b9bb2c507e53dab
• https://git.kernel.org/stable/c/445c31ac638fd1af203d79bdf25fc0cb3149fbbc

No related operational record is retained in the current change model.