exit: Use READ_ONCE() for all oops/warn limit reads

Use a temporary variable to take full advantage of READ_ONCE() behavior.
Without this, the report (and even the test) might be out of sync with
the initial test.

Reported-by: Peter Zijlstra <[email protected]>
Link: https://lore.kernel.org/lkml/[email protected]
Fixes: 9fc9e278a5c0 ("panic: Introduce warn_limit")
Fixes: d4ccd54d28d3 ("exit: Put an upper limit on how often we can oops")
Cc: "Eric W. Biederman" <[email protected]>
Cc: Jann Horn <[email protected]>
Cc: Arnd Bergmann <[email protected]>
Cc: Petr Mladek <[email protected]>
Cc: Andrew Morton <[email protected]>
Cc: Luis Chamberlain <[email protected]>
Cc: Marco Elver <[email protected]>
Cc: tangmeng <[email protected]>
Cc: Sebastian Andrzej Siewior <[email protected]>
Cc: Tiezhu Yang <[email protected]>
Signed-off-by: Kees Cook <[email protected]>

0 files changed, 0 insertions, 0 deletions