md/raid10: reset read_slot when reusing r10bio for discard

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

CVE-2026-74376 · Microsoft / collected KEV context

cve-program · CVE-2026-74376

• https://git.kernel.org/stable/c/3cb2a606ce4902eceabe68338df0653312f861f8
• https://git.kernel.org/stable/c/561c9711e4f545d6464a023168bdee03b00fa945
• https://git.kernel.org/stable/c/ce3030e92f14362880055de5fe3c258971118853
• https://git.kernel.org/stable/c/742e4afd247d9c972695227716b03d432a7e1d26
• https://git.kernel.org/stable/c/b7313f23ea5a79b199a007bfad64a866cc2c22e7
• https://git.kernel.org/stable/c/eb04e3e9c14ed15914f5fd2eae8b6435f54f095f
• https://git.kernel.org/stable/c/6b8a26af065ddc93de2aa5c9f0df98dce9723442

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