diff options
| author | Ingo Molnar <mingo@kernel.org> | 2018-03-10 10:19:28 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2018-03-10 10:19:28 +0100 |
| commit | d88f1f1fdb9f8f60602b406c89342e113a19df7f (patch) | |
| tree | 16da02010b66f7f54fde737c5c54e43980789f79 /arch/arm64/kernel/stacktrace.c | |
| parent | 04860d48a8aba5b21ae5ba1f86b0d4e3bc628fff (diff) | |
| parent | cdb06e9d8f520c969676e7d6778cffe5894f079f (diff) | |
Merge branch 'linus' into locking/core, to pick up fixes and dependencies
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/arm64/kernel/stacktrace.c')
| -rw-r--r-- | arch/arm64/kernel/stacktrace.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/arm64/kernel/stacktrace.c b/arch/arm64/kernel/stacktrace.c index 76809ccd309c..d5718a060672 100644 --- a/arch/arm64/kernel/stacktrace.c +++ b/arch/arm64/kernel/stacktrace.c @@ -59,6 +59,11 @@ int notrace unwind_frame(struct task_struct *tsk, struct stackframe *frame) #ifdef CONFIG_FUNCTION_GRAPH_TRACER if (tsk->ret_stack && (frame->pc == (unsigned long)return_to_handler)) { + if (WARN_ON_ONCE(frame->graph == -1)) + return -EINVAL; + if (frame->graph < -1) + frame->graph += FTRACE_NOTRACE_DEPTH; + /* * This is a case where function graph tracer has * modified a return address (LR) in a stack frame |