Hi, Here is the 6th version of fprobe bugfix series. The previous version is here.
https://lore.kernel.org/all/177606956628.929411.17392736689322577701.stgit@devnote2/ In this version, I added yet another bugfixes for rejecting registered fprobe correctly [1/5], and unregistering ftrace_ops if it is empty on module unloading [5/5]. Also, add RCU synchronization for failure path [2/5] and retry rhashtable walking outside of rhltable_walk_enter/exit [3/5]. The [5/5] is to handle the module unloading problem I reported previously [1]. This was handled solely within fprobe to avoid impacting the live patch. [1] https://lore.kernel.org/all/[email protected]/ Thank you! Masami Hiramatsu (Google) (5): tracing/fprobe: Reject registration of a registered fprobe before init 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 kernel/trace/fprobe.c | 462 +++++++++++++++++++++++++++++++++---------------- 1 file changed, 308 insertions(+), 154 deletions(-) base-commit: 4346be6577aaa04586167402ae87bbdbe32484a4 -- Masami Hiramatsu (Google) <[email protected]>
