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| author | Ingo Molnar <mingo@kernel.org> | 2018-05-14 11:22:59 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2018-05-14 11:22:59 +0200 |
| commit | 4b96583869c4d990b779eca72976063970d41b8d (patch) | |
| tree | f2fdb7760a06f6445f33fdee3ec512fbdb46fcb4 /init/main.c | |
| parent | dt-bindings/gic-v3: Add documentation for MBI support (diff) | |
| parent | Linux 4.17-rc5 (diff) | |
| download | linux-4b96583869c4d990b779eca72976063970d41b8d.tar.xz linux-4b96583869c4d990b779eca72976063970d41b8d.zip | |
Merge tag 'v4.17-rc5' into irq/core, to pick up fixes
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'init/main.c')
| -rw-r--r-- | init/main.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/init/main.c b/init/main.c index b795aa341a3a..fd37315835b4 100644 --- a/init/main.c +++ b/init/main.c @@ -423,7 +423,7 @@ static noinline void __ref rest_init(void) /* * Enable might_sleep() and smp_processor_id() checks. - * They cannot be enabled earlier because with CONFIG_PRREMPT=y + * They cannot be enabled earlier because with CONFIG_PREEMPT=y * kernel_thread() would trigger might_sleep() splats. With * CONFIG_PREEMPT_VOLUNTARY=y the init task might have scheduled * already, but it's stuck on the kthreadd_done completion. @@ -1034,6 +1034,13 @@ __setup("rodata=", set_debug_rodata); static void mark_readonly(void) { if (rodata_enabled) { + /* + * load_module() results in W+X mappings, which are cleaned up + * with call_rcu_sched(). Let's make sure that queued work is + * flushed so that we don't hit false positives looking for + * insecure pages which are W+X. + */ + rcu_barrier_sched(); mark_rodata_ro(); rodata_test(); } else |