tree 91e5a8c9d9e5e791301225e4e0b658b4fd5b3e81
parent c86daad2c25bfd4a33d48b7691afaa96d9c5ab46
parent 6ee98ffeea0bc9e072e419497d78697d8afcdd6d
author Linus Torvalds <torvalds@linux-foundation.org> 1495899030 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> 1495899030 -0700
mergetag object 6ee98ffeea0bc9e072e419497d78697d8afcdd6d
 type commit
 tag trace-v4.12-rc2
 tagger Steven Rostedt <rostedt@goodmis.org> 1495852994 -0400
 
 There's been a few memory issues found with ftrace.
 
 One was simply a memory leak where not all was being freed that should
 have been in releasing a file pointer on set_graph_function.
 
 Then Thomas found that the ftrace trampolines were marked for read/write
 as well as execute. To shrink the possible attack surface, he added
 calls to set them to ro. Which also uncovered some other issues with
 freeing module allocated memory that had its permissions changed.
 
 Kprobes had a similar issue which is fixed and a selftest was added
 to trigger that issue again.
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Merge tag 'trace-v4.12-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

Pull ftrace fixes from Steven Rostedt:
 "There's been a few memory issues found with ftrace.

  One was simply a memory leak where not all was being freed that should
  have been in releasing a file pointer on set_graph_function.

  Then Thomas found that the ftrace trampolines were marked for
  read/write as well as execute. To shrink the possible attack surface,
  he added calls to set them to ro. Which also uncovered some other
  issues with freeing module allocated memory that had its permissions
  changed.

  Kprobes had a similar issue which is fixed and a selftest was added to
  trigger that issue again"

* tag 'trace-v4.12-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  x86/ftrace: Make sure that ftrace trampolines are not RWX
  x86/mm/ftrace: Do not bug in early boot on irqs_disabled in cpu_flush_range()
  selftests/ftrace: Add a testcase for many kprobe events
  kprobes/x86: Fix to set RWX bits correctly before releasing trampoline
  ftrace: Fix memory leak in ftrace_graph_release()