diff options
| author | Masami Hiramatsu <mhiramat@kernel.org> | 2022-01-24 17:17:54 +0900 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2022-01-24 14:25:20 +0000 |
| commit | 1e0924bd09916fab795fc2a21ec1d148f24299fd (patch) | |
| tree | 73abf57f0df6d7a5612401a8488d29be91b117ed | |
| parent | eb30d838a44c9e59a2a106884f536119859c7257 (diff) | |
| download | linux-1e0924bd09916fab795fc2a21ec1d148f24299fd.tar.gz linux-1e0924bd09916fab795fc2a21ec1d148f24299fd.tar.bz2 linux-1e0924bd09916fab795fc2a21ec1d148f24299fd.zip | |
arm64: Mark start_backtrace() notrace and NOKPROBE_SYMBOL
Mark the start_backtrace() as notrace and NOKPROBE_SYMBOL
because this function is called from ftrace and lockdep to
get the caller address via return_address(). The lockdep
is used in kprobes, it should also be NOKPROBE_SYMBOL.
Fixes: b07f3499661c ("arm64: stacktrace: Move start_backtrace() out of the header")
Cc: <stable@vger.kernel.org> # 5.13.x
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Reviewed-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/164301227374.1433152.12808232644267107415.stgit@devnote2
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
| -rw-r--r-- | arch/arm64/kernel/stacktrace.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/arch/arm64/kernel/stacktrace.c b/arch/arm64/kernel/stacktrace.c index 0fb58fed54cb..e4103e085681 100644 --- a/arch/arm64/kernel/stacktrace.c +++ b/arch/arm64/kernel/stacktrace.c @@ -33,8 +33,8 @@ */ -static void start_backtrace(struct stackframe *frame, unsigned long fp, - unsigned long pc) +static notrace void start_backtrace(struct stackframe *frame, unsigned long fp, + unsigned long pc) { frame->fp = fp; frame->pc = pc; @@ -55,6 +55,7 @@ static void start_backtrace(struct stackframe *frame, unsigned long fp, frame->prev_fp = 0; frame->prev_type = STACK_TYPE_UNKNOWN; } +NOKPROBE_SYMBOL(start_backtrace); /* * Unwind from one frame record (A) to the next frame record (B). |