From: Max Filippov Date: Wed, 16 Mar 2022 09:04:17 +0000 (-0700) Subject: xtensa: fix stop_machine_cpuslocked call in patch_text X-Git-Tag: v5.15.73~6059 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=821907e8f516b01ea0c64f057b7d0a45ab242e17;p=platform%2Fkernel%2Flinux-rpi.git xtensa: fix stop_machine_cpuslocked call in patch_text commit f406f2d03e07afc199dd8cf501f361dde6be8a69 upstream. patch_text must invoke patch_text_stop_machine on all online CPUs, but it calls stop_machine_cpuslocked with NULL cpumask. As a result only one CPU runs patch_text_stop_machine potentially leaving stale icache entries on other CPUs. Fix that by calling stop_machine_cpuslocked with cpu_online_mask as the last argument. Cc: stable@vger.kernel.org Fixes: 64711f9a47d4 ("xtensa: implement jump_label support") Signed-off-by: Max Filippov Signed-off-by: Greg Kroah-Hartman --- diff --git a/arch/xtensa/kernel/jump_label.c b/arch/xtensa/kernel/jump_label.c index 61cf649..0dde21e 100644 --- a/arch/xtensa/kernel/jump_label.c +++ b/arch/xtensa/kernel/jump_label.c @@ -61,7 +61,7 @@ static void patch_text(unsigned long addr, const void *data, size_t sz) .data = data, }; stop_machine_cpuslocked(patch_text_stop_machine, - &patch, NULL); + &patch, cpu_online_mask); } else { unsigned long flags;