[PATCH v8 0/8] tracing/fprobe: Fix fprobe_ip_table related bugs

[Masami Hiramatsu (Google)]

Hi,

Here is the 8th version of fprobe bugfix series.
The previous version is here.

https://lore.kernel.org/all/177624771150.2407691.15764846647014540969.stgit@xxxxxxxxxxxxxxxxxxxxxxxxxxxx/

This version fixes 2 issues - fixes to check the return value of
add_fprobe_hash() and break the fprobe node installing loop if
insert_fprobe_node() is failed [2/8], and fixes to check
fprobe_graph/ftrace_registered flags directly when registering
ftrace_ops [6/8]. And this adds 2 new test cases for checking
the fprobe events bahavior fixed by this series [7/8][8/8].


Thank you!

Masami Hiramatsu (Google) (8):
      tracing/fprobe: Reject registration of a registered fprobe before init
      tracing/fprobe: Unregister fprobe even if memory allocation fails
      tracing/fprobe: Remove fprobe from hash in failure path
      tracing/fprobe: Avoid kcalloc() in rcu_read_lock section
      tracing/fprobe: Check the same type fprobe on table as the unregistered one
      tracing/fprobe: Fix to unregister ftrace_ops if it is empty on module unloading
      selftests/ftrace: Add a testcase for fprobe events on module
      selftests/ftrace: Add a testcase for multiple fprobe events


 kernel/trace/fprobe.c                              |  475 +++++++++++++-------
 .../test.d/dynevent/add_remove_fprobe_module.tc    |   61 +++
 .../test.d/dynevent/add_remove_multiple_fprobe.tc  |   69 +++
 3 files changed, 448 insertions(+), 157 deletions(-)
 create mode 100644 tools/testing/selftests/ftrace/test.d/dynevent/add_remove_fprobe_module.tc
 create mode 100644 tools/testing/selftests/ftrace/test.d/dynevent/add_remove_multiple_fprobe.tc


base-commit: 4346be6577aaa04586167402ae87bbdbe32484a4
--
Masami Hiramatsu (Google) <mhiramat@xxxxxxxxxx>