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| author | Naveen N. Rao <[email protected]> | 2017-06-01 16:18:15 +0530 |
|---|---|---|
| committer | Michael Ellerman <[email protected]> | 2017-06-16 19:49:43 +1000 |
| commit | a9f8553e935f26cb5447f67e280946b0923cd2dc (patch) | |
| tree | 50d94ef8c3ffe08b34b9ae3e9993c140733b1a61 /scripts/gcc-plugins/randomize_layout_plugin.c | |
| parent | a093c92dc7f96a15de98ec8cfe38e6f7610a5969 (diff) | |
powerpc/kprobes: Pause function_graph tracing during jprobes handling
This fixes a crash when function_graph and jprobes are used together.
This is essentially commit 237d28db036e ("ftrace/jprobes/x86: Fix
conflict between jprobes and function graph tracing"), but for powerpc.
Jprobes breaks function_graph tracing since the jprobe hook needs to use
jprobe_return(), which never returns back to the hook, but instead to
the original jprobe'd function. The solution is to momentarily pause
function_graph tracing before invoking the jprobe hook and re-enable it
when returning back to the original jprobe'd function.
Fixes: 6794c78243bf ("powerpc64: port of the function graph tracer")
Cc: [email protected] # v2.6.30+
Signed-off-by: Naveen N. Rao <[email protected]>
Acked-by: Masami Hiramatsu <[email protected]>
Acked-by: Steven Rostedt (VMware) <[email protected]>
Signed-off-by: Michael Ellerman <[email protected]>
Diffstat (limited to 'scripts/gcc-plugins/randomize_layout_plugin.c')
0 files changed, 0 insertions, 0 deletions