diff options
| author | Steven Rostedt (VMware) <rostedt@goodmis.org> | 2021-11-29 21:39:48 -0500 |
|---|---|---|
| committer | Steven Rostedt (VMware) <rostedt@goodmis.org> | 2021-12-06 15:37:22 -0500 |
| commit | 3e8b1a29a0e8d300466cf2a23d2f6d41971c5a0c (patch) | |
| tree | 0e10b6c048e49c8c03bf6c3c951f631bd9d81c99 /kernel/trace/trace_eprobe.c | |
| parent | 6c536d76cfe63b79e9e468ef0876315420a19074 (diff) | |
| download | linux-stable-3e8b1a29a0e8d300466cf2a23d2f6d41971c5a0c.tar.gz linux-stable-3e8b1a29a0e8d300466cf2a23d2f6d41971c5a0c.tar.bz2 linux-stable-3e8b1a29a0e8d300466cf2a23d2f6d41971c5a0c.zip | |
tracing: Have eprobes use filtering logic of trace events
The eprobes open code the reserving of the event on the ring buffer for
ftrace instead of using the ftrace event wrappers, which means that it
doesn't get affected by the filters, breaking the filtering logic on user
space.
Link: https://lkml.kernel.org/r/20211130024319.068451680@goodmis.org
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Diffstat (limited to 'kernel/trace/trace_eprobe.c')
| -rw-r--r-- | kernel/trace/trace_eprobe.c | 16 |
1 files changed, 5 insertions, 11 deletions
diff --git a/kernel/trace/trace_eprobe.c b/kernel/trace/trace_eprobe.c index 928867f527e7..88487752d307 100644 --- a/kernel/trace/trace_eprobe.c +++ b/kernel/trace/trace_eprobe.c @@ -489,18 +489,12 @@ __eprobe_trace_func(struct eprobe_data *edata, void *rec) if (trace_trigger_soft_disabled(edata->file)) return; - fbuffer.trace_ctx = tracing_gen_ctx(); - fbuffer.trace_file = edata->file; - dsize = get_eprobe_size(&edata->ep->tp, rec); - fbuffer.regs = NULL; - - fbuffer.event = - trace_event_buffer_lock_reserve(&fbuffer.buffer, edata->file, - call->event.type, - sizeof(*entry) + edata->ep->tp.size + dsize, - fbuffer.trace_ctx); - if (!fbuffer.event) + + entry = trace_event_buffer_reserve(&fbuffer, edata->file, + sizeof(*entry) + edata->ep->tp.size + dsize); + + if (!entry) return; entry = fbuffer.entry = ring_buffer_event_data(fbuffer.event); |