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| author | Masami Hiramatsu <mhiramat@kernel.org> | 2022-03-15 15:00:50 +0100 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2022-03-18 04:16:29 +0100 |
| commit | 54ecbe6f1ed5138c895bdff55608cf502755b20e (patch) | |
| tree | 409360f3d1dd0bafbbbf390c201dced76a64e063 /kernel/fork.c | |
| parent | fprobe: Add ftrace based probe APIs (diff) | |
| download | linux-54ecbe6f1ed5138c895bdff55608cf502755b20e.tar.xz linux-54ecbe6f1ed5138c895bdff55608cf502755b20e.zip | |
rethook: Add a generic return hook
Add a return hook framework which hooks the function return. Most of the
logic came from the kretprobe, but this is independent from kretprobe.
Note that this is expected to be used with other function entry hooking
feature, like ftrace, fprobe, adn kprobes. Eventually this will replace
the kretprobe (e.g. kprobe + rethook = kretprobe), but at this moment,
this is just an additional hook.
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Tested-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/164735285066.1084943.9259661137330166643.stgit@devnote2
Diffstat (limited to 'kernel/fork.c')
| -rw-r--r-- | kernel/fork.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/kernel/fork.c b/kernel/fork.c index a024bf6254df..3db1a4110a25 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -2255,6 +2255,9 @@ static __latent_entropy struct task_struct *copy_process( #ifdef CONFIG_KRETPROBES p->kretprobe_instances.first = NULL; #endif +#ifdef CONFIG_RETHOOK + p->rethooks.first = NULL; +#endif /* * Ensure that the cgroup subsystem policies allow the new process to be |