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| author | Shengming Hu <hu.shengming@zte.com.cn> | 2026-02-21 11:30:07 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2026-03-19 16:15:18 +0100 |
| commit | 8f169b64c6ca6d8f5a95e0890988f298ca1dd88c (patch) | |
| tree | bab39b45970572c14229743b69ecefbec54b5766 /include/net/aligned_data.h | |
| parent | 2f09cd73870b36448e2b617ff65b12a817295810 (diff) | |
fgraph: Fix thresh_return clear per-task notrace
commit 6ca8379b5d36e22b04e6315c3e49a6083377c862 upstream.
When tracing_thresh is enabled, function graph tracing uses
trace_graph_thresh_return() as the return handler. Unlike
trace_graph_return(), it did not clear the per-task TRACE_GRAPH_NOTRACE
flag set by the entry handler for set_graph_notrace addresses. This could
leave the task permanently in "notrace" state and effectively disable
function graph tracing for that task.
Mirror trace_graph_return()'s per-task notrace handling by clearing
TRACE_GRAPH_NOTRACE and returning early when set.
Cc: stable@vger.kernel.org
Link: https://patch.msgid.link/20260221113007819YgrZsMGABff4Rc-O_fZxL@zte.com.cn
Fixes: b84214890a9bc ("function_graph: Move graph notrace bit to shadow stack global var")
Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Shengming Hu <hu.shengming@zte.com.cn>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/net/aligned_data.h')
0 files changed, 0 insertions, 0 deletions