Merge branch 'master' into test

* master: (688 commits)
  dt-bindings: mailbox: qcom: Document the APCS clock binding
  mailbox: qcom: Create APCS child device for clock controller
  mailbox: qcom: Convert APCS IPC driver to use regmap
  KVM/SVM: Allow direct access to MSR_IA32_SPEC_CTRL
  KVM/VMX: Allow direct access to MSR_IA32_SPEC_CTRL
  KVM/VMX: Emulate MSR_IA32_ARCH_CAPABILITIES
  KVM/x86: Add IBPB support
  KVM/x86: Update the reverse_cpuid list to include CPUID_7_EDX
  pinctrl: remove include file from <linux/device.h>
  firmware: dmi: handle missing DMI data gracefully
  firmware: dmi_scan: Fix handling of empty DMI strings
  firmware: dmi_scan: Drop dmi_initialized
  firmware: dmi: Optimize dmi_matches
  Revert "defer call to mem_cgroup_sk_alloc()"
  soreuseport: fix mem leak in reuseport_add_sock()
  net: qlge: use memmove instead of skb_copy_to_linear_data
  net: qed: use correct strncpy() size
  net: cxgb4: avoid memcpy beyond end of source buffer
  cls_u32: add missing RCU annotation.
  r8152: set rx mode early when linking on
  ...

1 files changed, 2 insertions, 12 deletions

diff --git a/arch/arm/kernel/stacktrace.c b/arch/arm/kernel/stacktrace.c
index 65228bf4c6df..a56e7c856ab5 100644
--- a/arch/arm/kernel/stacktrace.c
+++ b/arch/arm/kernel/stacktrace.c
@@ -3,6 +3,7 @@
 #include <linux/sched/debug.h>
 #include <linux/stacktrace.h>
 
+#include <asm/sections.h>
 #include <asm/stacktrace.h>
 #include <asm/traps.h>
 
@@ -63,7 +64,6 @@ EXPORT_SYMBOL(walk_stackframe);
 #ifdef CONFIG_STACKTRACE
 struct stack_trace_data {
 	struct stack_trace *trace;
-	unsigned long last_pc;
 	unsigned int no_sched_functions;
 	unsigned int skip;
 };
@@ -87,16 +87,7 @@ static int save_trace(struct stackframe *frame, void *d)
 	if (trace->nr_entries >= trace->max_entries)
 		return 1;
 
-	/*
-	 * in_exception_text() is designed to test if the PC is one of
-	 * the functions which has an exception stack above it, but
-	 * unfortunately what is in frame->pc is the return LR value,
-	 * not the saved PC value.  So, we need to track the previous
-	 * frame PC value when doing this.
-	 */
-	addr = data->last_pc;
-	data->last_pc = frame->pc;
-	if (!in_exception_text(addr))
+	if (!in_entry_text(frame->pc))
 		return 0;
 
 	regs = (struct pt_regs *)frame->sp;
@@ -114,7 +105,6 @@ static noinline void __save_stack_trace(struct task_struct *tsk,
 	struct stackframe frame;
 
 	data.trace = trace;
-	data.last_pc = ULONG_MAX;
 	data.skip = trace->skip;
 	data.no_sched_functions = nosched;