Description: spi: fix use-after-free of the add_lock mutex
References:
Notes:
 carnil> Introduced in 6098475d4cb4 ("spi: Fix deadlock when adding SPI controllers on
 carnil> SPI buses"). Vulnerable versions: 5.14.15 5.15-rc6.
Bugs:
upstream: released (5.16-rc2) [6c53b45c71b4920b5e62f0ea8079a1da382b9434]
6.8-upstream-stable: N/A "Fixed before branching point"
6.7-upstream-stable: N/A "Fixed before branching point"
6.6-upstream-stable: N/A "Fixed before branching point"
6.1-upstream-stable: N/A "Fixed before branching point"
5.10-upstream-stable: N/A "Vulnerable code not present"
4.19-upstream-stable: N/A "Vulnerable code not present"
sid: released (5.15.5-1)
6.1-bookworm-security: N/A "Fixed before branching point"
5.10-bullseye-security: N/A "Vulnerable code not present"
4.19-buster-security: N/A "Vulnerable code not present"