On Thu, Sep 17, 2015 at 05:14:37PM -0500, Chris J Arges wrote: > The function kretprobe_trampoline_holder isn't called explicility and > therefore > should be ignored by stacktool. > > Signed-off-by: Chris J Arges <chris.j.ar...@canonical.com> > --- > arch/x86/kernel/kprobes/core.c | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/arch/x86/kernel/kprobes/core.c b/arch/x86/kernel/kprobes/core.c > index 1deffe6..3ade909 100644 > --- a/arch/x86/kernel/kprobes/core.c > +++ b/arch/x86/kernel/kprobes/core.c > @@ -49,6 +49,7 @@ > #include <linux/kdebug.h> > #include <linux/kallsyms.h> > #include <linux/ftrace.h> > +#include <linux/stacktool.h> > > #include <asm/cacheflush.h> > #include <asm/desc.h> > @@ -704,6 +705,7 @@ static void __used kretprobe_trampoline_holder(void) > } > NOKPROBE_SYMBOL(kretprobe_trampoline_holder); > NOKPROBE_SYMBOL(kretprobe_trampoline); > +STACKTOOL_IGNORE_FUNC(kretprobe_trampoline_holder); > > /* > * Called from kretprobe_trampoline > -- > 1.9.1
The kretprobe trampoline isn't called directly but it can still be executed at runtime. I think we should make sure it does the "right thing" with respect to frame pointers and CFI before telling stacktool to ignore it. -- Josh -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
