On Thu, Apr 7, 2022 at 11:35 AM Max Filippov jcmvbkbc@gmail.com wrote:
On Wed, Apr 6, 2022 at 7:28 AM guoren@kernel.org wrote:
From: Guo Ren guoren@linux.alibaba.com
These patch_text implementations are using stop_machine_cpuslocked infrastructure with atomic cpu_count. The original idea: When the master CPU patch_text, the others should wait for it. But current implementation is using the first CPU as master, which couldn't guarantee the remaining CPUs are waiting. This patch changes the last CPU as the master to solve the potential risk.
Signed-off-by: Guo Ren guoren@linux.alibaba.com Signed-off-by: Guo Ren guoren@kernel.org Reviewed-by: Max Filippov jcmvbkbc@gmail.com Reviewed-by: Masami Hiramatsu mhiramat@kernel.org Cc: stable@vger.kernel.org
arch/xtensa/kernel/jump_label.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
Thanks. Applied to my xtensa tree.
I've missed the "Fixes:" for stable@vger.kernel.org, so I would update v3 to fix it.
-- Max