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| author | David S. Miller <davem@davemloft.net> | 2017-12-17 06:11:55 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-12-17 06:11:55 +0300 |
| commit | c30abd5e40dd863f88e26be09b6ce949145a630a (patch) | |
| tree | 5b25362084308502a336d8da26b8dc7430d7c812 /kernel/trace/trace_stack.c | |
| parent | 28dc4c8f4557d82e9be020e85e2362239270e704 (diff) | |
| parent | f3b5ad89de16f5d42e8ad36fbdf85f705c1ae051 (diff) | |
| download | linux-c30abd5e40dd863f88e26be09b6ce949145a630a.tar.xz | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Three sets of overlapping changes, two in the packet scheduler
and one in the meson-gxl PHY driver.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'kernel/trace/trace_stack.c')
| -rw-r--r-- | kernel/trace/trace_stack.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/kernel/trace/trace_stack.c b/kernel/trace/trace_stack.c index 734accc02418..3c7bfc4bf5e9 100644 --- a/kernel/trace/trace_stack.c +++ b/kernel/trace/trace_stack.c @@ -209,6 +209,10 @@ stack_trace_call(unsigned long ip, unsigned long parent_ip, if (__this_cpu_read(disable_stack_tracer) != 1) goto out; + /* If rcu is not watching, then save stack trace can fail */ + if (!rcu_is_watching()) + goto out; + ip += MCOUNT_INSN_SIZE; check_stack(ip, &stack); |