[v1] tracing/eprobes: Fixes for unexpected arguments

[PATCH 0/4] tracing/eprobes: Fixes for unexpected arguments

Steven Rostedt posted 4 patches 3 years, 7 months ago

Diff against v2
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kernel/trace/trace_eprobe.c | 88 +++++++++++++++++++++++++++++++++++++++++----
kernel/trace/trace_probe.c  | 26 ++++++++------
2 files changed, 98 insertions(+), 16 deletions(-)

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[PATCH 0/4] tracing/eprobes: Fixes for unexpected arguments

Posted by Steven Rostedt 3 years, 7 months ago

While using eprobes, I decided to entertain the thougth of what would
happen if I tried to get the instruction pointer "%rip", knowing full
well that eprobes do not have access to pt_regs. Well, I found out, and
it led me down a rabbit hole of bugs.

This series fixes those bugs, by not allowing register access for eprobes,
and also filling the holes of @symbol and @immediate argument.


Steven Rostedt (Google) (4):
      tracing/eprobes: Do not allow eprobes to use $stack, or % for regs
      tracing/eprobes: Do not hardcode $comm as a string
      tracing/eprobes: Fix reading of string fields
      tracing/eprobes: Have event probes be consistent with kprobes and uprobes

----
 kernel/trace/trace_eprobe.c | 88 +++++++++++++++++++++++++++++++++++++++++----
 kernel/trace/trace_probe.c  | 26 ++++++++------
 2 files changed, 98 insertions(+), 16 deletions(-)