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| author | Will Deacon <will.deacon@arm.com> | 2018-12-13 13:14:06 +0000 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2018-12-13 16:42:47 +0000 |
| commit | 84931327a807a4dd65d0d6b53a8ae47845c91f79 (patch) | |
| tree | f759292fbe46dd83d4b3954eb17eb53bfe480d7f /arch/arm64/kernel/pointer_auth.c | |
| parent | 04ca3204fa09f5f55c8f113b0072004a7b364ff4 (diff) | |
| download | lwn-84931327a807a4dd65d0d6b53a8ae47845c91f79.tar.gz lwn-84931327a807a4dd65d0d6b53a8ae47845c91f79.zip | |
arm64: ptr auth: Move per-thread keys from thread_info to thread_struct
We don't need to get at the per-thread keys from assembly at all, so
they can live alongside the rest of the per-thread register state in
thread_struct instead of thread_info.
This will also allow straighforward whitelisting of the keys for
hardened usercopy should we expose them via a ptrace request later on.
Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'arch/arm64/kernel/pointer_auth.c')
| -rw-r--r-- | arch/arm64/kernel/pointer_auth.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm64/kernel/pointer_auth.c b/arch/arm64/kernel/pointer_auth.c index b9f6f5f3409a..c507b584259d 100644 --- a/arch/arm64/kernel/pointer_auth.c +++ b/arch/arm64/kernel/pointer_auth.c @@ -9,7 +9,7 @@ int ptrauth_prctl_reset_keys(struct task_struct *tsk, unsigned long arg) { - struct ptrauth_keys *keys = &tsk->thread_info.keys_user; + struct ptrauth_keys *keys = &tsk->thread.keys_user; unsigned long addr_key_mask = PR_PAC_APIAKEY | PR_PAC_APIBKEY | PR_PAC_APDAKEY | PR_PAC_APDBKEY; unsigned long key_mask = addr_key_mask | PR_PAC_APGAKEY; |