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| author | Kees Cook <keescook@chromium.org> | 2018-05-01 15:19:04 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-05-22 16:58:01 +0200 |
| commit | 4272f528da381673a8e7845c93daa88b8aa4f4e9 (patch) | |
| tree | 06df42ad4350a7041883a4e76100e85ca54726e6 /include | |
| parent | a078e3e81964c31079627dd32c3ea714d5b1531e (diff) | |
| download | linux-stable-4272f528da381673a8e7845c93daa88b8aa4f4e9.tar.gz linux-stable-4272f528da381673a8e7845c93daa88b8aa4f4e9.tar.bz2 linux-stable-4272f528da381673a8e7845c93daa88b8aa4f4e9.zip | |
nospec: Allow getting/setting on non-current task
commit 7bbf1373e228840bb0295a2ca26d548ef37f448e upstream
Adjust arch_prctl_get/set_spec_ctrl() to operate on tasks other than
current.
This is needed both for /proc/$pid/status queries and for seccomp (since
thread-syncing can trigger seccomp in non-current threads).
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/nospec.h | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/include/linux/nospec.h b/include/linux/nospec.h index 700bb8a4e4ea..a908c954484d 100644 --- a/include/linux/nospec.h +++ b/include/linux/nospec.h @@ -7,6 +7,8 @@ #define _LINUX_NOSPEC_H #include <asm/barrier.h> +struct task_struct; + /** * array_index_mask_nospec() - generate a ~0 mask when index < size, 0 otherwise * @index: array element index @@ -57,7 +59,8 @@ static inline unsigned long array_index_mask_nospec(unsigned long index, }) /* Speculation control prctl */ -int arch_prctl_spec_ctrl_get(unsigned long which); -int arch_prctl_spec_ctrl_set(unsigned long which, unsigned long ctrl); +int arch_prctl_spec_ctrl_get(struct task_struct *task, unsigned long which); +int arch_prctl_spec_ctrl_set(struct task_struct *task, unsigned long which, + unsigned long ctrl); #endif /* _LINUX_NOSPEC_H */ |