[for-linus][PATCH 0/4] tracing: Fixes for v7.2

[Steven Rostedt <rostedt@kernel.org>]

tracing fixes for v7.2:

- Add selftest that tests deferred event teardown

- Fix leak in error path of trace_remote_alloc_buffer()

  If page allocation fails, the desc->nr_cpus is not incremented for the
  current CPU and the allocations done for it are not freed.

- Fix allocation length in trace_remote_alloc_buffer()

  The logic to calculate the struct_len was doing a double count and setting
  the value too large. Calculate the size upfront to fix the error and
  simplify the logic.

- Fix sparse CPU masks in ring_buffer_desc()

  If there are sparse CPUs (gaps in the numbering), the ring_buffer_desc()
  will fail as it tests the CPU number against the number of CPUs that are
  used.

  git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace.git
trace/fixes

Head SHA1: 601ddaceb861be7eb557278109966320a6f3478c


Michael Bommarito (1):
      selftests/user_events: Wait for deferred event teardown after unregister

Vincent Donnefort (3):
      tracing/remotes: Fix leak in trace_remote_alloc_buffer() error path
      tracing/remotes: Fix struct_len in trace_remote_alloc_buffer()
      ring-buffer: Allow sparse CPU masks in ring_buffer_desc()

----
 kernel/trace/ring_buffer.c                      |  5 +----
 kernel/trace/trace_remote.c                     | 18 +++++----------
 tools/testing/selftests/user_events/abi_test.c  | 29 ++++++++++++++++++++++++-
 tools/testing/selftests/user_events/perf_test.c | 26 +++++++++++++++++++---
 4 files changed, 58 insertions(+), 20 deletions(-)