Commit 37c6f808 authored by Adrian Hunter's avatar Adrian Hunter Committed by Greg Kroah-Hartman

perf probe: Fix getting the kernel map

commit eaeffeb9 upstream.

Since commit 4d99e413 ("perf machine: Workaround missing maps for
x86 PTI entry trampolines"), perf tools has been creating more than one
kernel map, however 'perf probe' assumed there could be only one.

Fix by using machine__kernel_map() to get the main kernel map.
Signed-off-by: default avatarAdrian Hunter <adrian.hunter@intel.com>
Tested-by: default avatarJoseph Qi <joseph.qi@linux.alibaba.com>
Acked-by: default avatarMasami Hiramatsu <mhiramat@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Jiufei Xue <jiufei.xue@linux.alibaba.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: stable@vger.kernel.org
Cc: Xu Yu <xuyu@linux.alibaba.com>
Fixes: 4d99e413 ("perf machine: Workaround missing maps for x86 PTI entry trampolines")
Fixes: d83212d5 ("kallsyms, x86: Export addresses of PTI entry trampolines")
Link: http://lkml.kernel.org/r/2ed432de-e904-85d2-5c36-5897ddc5b23b@intel.comSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 14c52aca
......@@ -157,8 +157,10 @@ static struct map *kernel_get_module_map(const char *module)
if (module && strchr(module, '/'))
return dso__new_map(module);
if (!module)
module = "kernel";
if (!module) {
pos = machine__kernel_map(host_machine);
return map__get(pos);
}
for (pos = maps__first(maps); pos; pos = map__next(pos)) {
/* short_name is "[module]" */
......
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