Brian Gerst c9a1ff316b x86/stackprotector: Pre-initialize canary for secondary CPUs ...

The idle tasks created for each secondary CPU already have a random stack
canary generated by fork().  Copy the canary to the percpu variable before
starting the secondary CPU which removes the need to call
boot_init_stack_canary().

Signed-off-by: Brian Gerst <brgerst@gmail.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20200617225624.799335-1-brgerst@gmail.com

2020-06-18 13:09:17 +02:00

4.4 KiB

Raw Blame History

View Raw