x86/cpu/vmware: Do not trace vmware_sched_clock()
When running function tracing on a Linux guest running on VMware
Workstation, the guest would crash. This is due to tracing of the
sched_clock internal call of the VMware vmware_sched_clock(), which
causes an infinite recursion within the tracing code (clock calls must
not be traced).
Make vmware_sched_clock() not traced by ftrace.
Fixes: 80e9a4f21f
("x86/vmware: Add paravirt sched clock")
Reported-by: GwanYeong Kim <gy741.kim@gmail.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
CC: Alok Kataria <akataria@vmware.com>
CC: GwanYeong Kim <gy741.kim@gmail.com>
CC: "H. Peter Anvin" <hpa@zytor.com>
CC: Ingo Molnar <mingo@kernel.org>
Cc: stable@vger.kernel.org
CC: Thomas Gleixner <tglx@linutronix.de>
CC: virtualization@lists.linux-foundation.org
CC: x86-ml <x86@kernel.org>
Link: http://lkml.kernel.org/r/20181109152207.4d3e7d70@gandalf.local.home
This commit is contained in:
parent
a48777fdda
commit
1503538843
|
@ -77,7 +77,7 @@ static __init int setup_vmw_sched_clock(char *s)
|
|||
}
|
||||
early_param("no-vmw-sched-clock", setup_vmw_sched_clock);
|
||||
|
||||
static unsigned long long vmware_sched_clock(void)
|
||||
static unsigned long long notrace vmware_sched_clock(void)
|
||||
{
|
||||
unsigned long long ns;
|
||||
|
||||
|
|
Loading…
Reference in a new issue