Related link: https://lore.kernel.org/all/2592945.1703376169@warthog.procyon.org.uk/

 Above patch (upstream commit: 1997b3cb4217b09) seems causing a keyctl05 case
to fail in LTP:
https://github.com/linux-test-project/ltp/blob/master/testcases/kernel/syscalls/keyctl/keyctl05.c

  Bisected info between v6.7-rc7(keyctl05 passed) and v6.7-rc8(keyctl05 failed)
is in attached.

keyctl05 failed in add_key with type "dns_resolver" type syscall step tracked
by strace:
"
[pid 863107] add_key("dns_resolver", "desc", "\0\0\1\377\0", 5, KEY_SPEC_SESSION_KEYRING <unfinished ...>
[pid 863106] <... alarm resumed>)       = 30
[pid 863107] <... add_key resumed>)     = -1 EINVAL (Invalid argument)
"

Normal behavior in v6.7-rc7 kernel:
"
[pid  6726] add_key("dns_resolver", "desc", "\0\0\1\377\0", 5, KEY_SPEC_SESSION_KEYRING <unfinished ...>
[pid  6725] rt_sigreturn({mask=[]})     = 61
[pid  6726] <... add_key resumed>)      = 1029222644
"

Do you mind to take a look for this issue?

BR,
Thanks!