Messages in this thread | | | Date | Fri, 19 Aug 2022 21:40:35 -0400 | From | Steven Rostedt <> | Subject | [PATCH 0/4] tracing/eprobes: Fixes for unexpected arguments |
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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(-)
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