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| author |   Masami Hiramatsu <mhiramat@kernel.org> | 2021-10-21 09:55:00 +0900 |
|---|---|---|
| committer |   Steven Rostedt (VMware) <rostedt@goodmis.org> | 2021-10-22 12:16:53 -0400 |
| commit | fc6d647638a8412800dfd10ad687709cb4aee373 (patch) | |
| tree | 0da06b9037ca670a5a513cbe50bb47676b381022 /arch/arm64/kernel/stacktrace.c | |
| parent | arm64: kprobes: Record frame pointer with kretprobe instance (diff) | |
| download | wireguard-linux-fc6d647638a8412800dfd10ad687709cb4aee373.tar.xz wireguard-linux-fc6d647638a8412800dfd10ad687709cb4aee373.zip | |
arm64: kprobes: Make a frame pointer on __kretprobe_trampoline
Make a frame pointer (make the x29 register points the
address of pt_regs->regs[29]) on __kretprobe_trampoline.
This frame pointer will be used by the stacktracer when it is
called from the kretprobe handlers. In this case, the stack
tracer will unwind stack to trampoline_probe_handler() and
find the next frame pointer in the stack frame of the
__kretprobe_trampoline().
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Acked-by: Will Deacon <will@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Diffstat (limited to 'arch/arm64/kernel/stacktrace.c')
0 files changed, 0 insertions, 0 deletions