Merge tag 'trace-v6.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux...

Pull tracing fixes from Steven Rostedt:

 - Found that the synthetic events were using strlen/strscpy() on values
   that could have come from userspace, and that is bad.

   Consolidate the string logic of kprobe and eprobe and extend it to
   the synthetic events to safely process string addresses.

 - Clean up content of text dump in ftrace_bug() where the output does
   not make char reads into signed and sign extending the byte output.

 - Fix some kernel docs in the ring buffer code.

* tag 'trace-v6.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
  tracing: Fix reading strings from synthetic events
  tracing: Add "(fault)" name injection to kernel probes
  tracing: Move duplicate code of trace_kprobe/eprobe.c into header
  ring-buffer: Fix kernel-doc
  ftrace: Fix char print issue in print_ip_ins()

diff --combined kernel/trace/ftrace.c
index 02e18c4364396aefc730348d009b9571d39e035f,75c16215d065d4a7efce5a16c504ce5399229616..fbf2543111c05c2ffcb2be47b8497e723b6724ff
--- 1/kernel/trace/ftrace.c
--- 2/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@@ -2028,7 -2028,6 +2028,6 @@@ static int ftrace_hash_ipmodify_update(
  static void print_ip_ins(const char *fmt, const unsigned char *p)
  {
        char ins[MCOUNT_INSN_SIZE];
-       int i;
  
        if (copy_from_kernel_nofault(ins, p, MCOUNT_INSN_SIZE)) {
                printk(KERN_CONT "%s[FAULT] %px\n", fmt, p);
@@@ -2036,9 -2035,7 +2035,7 @@@
        }
  
        printk(KERN_CONT "%s", fmt);
- 
-       for (i = 0; i < MCOUNT_INSN_SIZE; i++)
-               printk(KERN_CONT "%s%02x", i ? ":" : "", ins[i]);
+       pr_cont("%*phC", MCOUNT_INSN_SIZE, ins);
  }
  
  enum ftrace_bug_type ftrace_bug_type;
@@@ -8285,7 -8282,8 +8282,7 @@@ static int kallsyms_callback(void *data
        if (args->addrs[idx])
                return 0;
  
 -      addr = ftrace_location(addr);
 -      if (!addr)
 +      if (!ftrace_location(addr))
                return 0;
  
        args->addrs[idx] = addr;