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!