lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Fri, 18 Mar 2016 22:26:09 +0100 From: Richard Cochran <rcochran@...utronix.de> To: <linux-kernel@...r.kernel.org> Cc: <rt@...utronix.de>, Zhang Rui <rui.zhang@...el.com>, Eduardo Valentin <edubezval@...il.com>, linux-pm@...r.kernel.org Subject: [PATCH 3/5] thermal: x86_pkg_temp: Handle the FROZEN hot plug notifier actions. When performing a suspend operation, the kernel brings all of the non-boot CPUs offline, calling the hot plug notifiers with the flag, CPU_TASKS_FROZEN, set in the action code. Similarly, during resume, the CPUs are brought back online, but again the notifiers have the FROZEN flag set. While some very few drivers really need to treat suspend/resume specially, this driver unintentionally ignores the notifications. This patch changes the driver to cancel its work item when the CPU goes down, even during a suspend operation. As a result, the suspended state is no longer a special case. Cc: Zhang Rui <rui.zhang@...el.com> Cc: Eduardo Valentin <edubezval@...il.com> Cc: linux-pm@...r.kernel.org Signed-off-by: Richard Cochran <rcochran@...utronix.de> --- drivers/thermal/x86_pkg_temp_thermal.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/thermal/x86_pkg_temp_thermal.c b/drivers/thermal/x86_pkg_temp_thermal.c index 7fc919f..97f0a2b 100644 --- a/drivers/thermal/x86_pkg_temp_thermal.c +++ b/drivers/thermal/x86_pkg_temp_thermal.c @@ -555,7 +555,7 @@ static int pkg_temp_thermal_cpu_callback(struct notifier_block *nfb, { unsigned int cpu = (unsigned long) hcpu; - switch (action) { + switch (action & ~CPU_TASKS_FROZEN) { case CPU_ONLINE: case CPU_DOWN_FAILED: get_core_online(cpu); -- 2.1.4
Powered by blists - more mailing lists