[RFC PATCH v2 07/13] stacktrace: export stack_trace_save_regs()
From: Jinchao Wang <hidden>
Date: 2026-07-17 13:05:13
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Subsystem:
the rest · Maintainer:
Linus Torvalds
The other stack_trace_save_*() flavours are exported, but the regs variant is not, so no module can capture a stack trace for a given pt_regs. KWatch, which may be built as a module, uses it to record who wrote to a watched address from the hardware breakpoint handler. Export it like its siblings. Signed-off-by: Jinchao Wang <redacted> --- kernel/stacktrace.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/kernel/stacktrace.c b/kernel/stacktrace.c
index afb3c116da91..d853c40f916b 100644
--- a/kernel/stacktrace.c
+++ b/kernel/stacktrace.c@@ -175,6 +175,7 @@ unsigned int stack_trace_save_regs(struct pt_regs *regs, unsigned long *store, arch_stack_walk(consume_entry, &c, current, regs); return c.len; } +EXPORT_SYMBOL_GPL(stack_trace_save_regs); #ifdef CONFIG_HAVE_RELIABLE_STACKTRACE /**
@@ -325,6 +326,7 @@ unsigned int stack_trace_save_regs(struct pt_regs *regs, unsigned long *store, save_stack_trace_regs(regs, &trace); return trace.nr_entries; } +EXPORT_SYMBOL_GPL(stack_trace_save_regs); #ifdef CONFIG_HAVE_RELIABLE_STACKTRACE /**
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2.53.0