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(parent: d855391) | patch
nospec: Allow getting/setting on non-current task
authorKees Cook <keescook@chromium.org>
Tue, 1 May 2018 22:19:04 +0000 (15:19 -0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Tue, 22 May 2018 16:54:03 +0000 (18:54 +0200)
commit7d1254a1489c4ecc23a6afdfd1a17bdbb4cd186d
treecbb6d57327ca925d030fb7cb04ab8649619f3f22tree | snapshot
parentd8553911627ab1d9789d08c9902f5e43194f99f7commit | diff
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: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
arch/x86/kernel/cpu/bugs.c diff | blob | history
include/linux/nospec.h diff | blob | history
kernel/sys.c diff | blob | history
Domain: System / Kernel;