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-rw-r--r--kernel/trace/trace_uprobe.c31
1 files changed, 19 insertions, 12 deletions
diff --git a/kernel/trace/trace_uprobe.c b/kernel/trace/trace_uprobe.c
index c4cf0abd60ba..3c9b97e6b1f4 100644
--- a/kernel/trace/trace_uprobe.c
+++ b/kernel/trace/trace_uprobe.c
@@ -911,26 +911,33 @@ probe_event_enable(struct trace_uprobe *tu, struct ftrace_event_file *file,
911 tu->tp.flags |= TP_FLAG_PROFILE; 911 tu->tp.flags |= TP_FLAG_PROFILE;
912 } 912 }
913 913
914 ret = uprobe_buffer_enable();
915 if (ret < 0)
916 return ret;
917
918 WARN_ON(!uprobe_filter_is_empty(&tu->filter)); 914 WARN_ON(!uprobe_filter_is_empty(&tu->filter));
919 915
920 if (enabled) 916 if (enabled)
921 return 0; 917 return 0;
922 918
919 ret = uprobe_buffer_enable();
920 if (ret)
921 goto err_flags;
922
923 tu->consumer.filter = filter; 923 tu->consumer.filter = filter;
924 ret = uprobe_register(tu->inode, tu->offset, &tu->consumer); 924 ret = uprobe_register(tu->inode, tu->offset, &tu->consumer);
925 if (ret) { 925 if (ret)
926 if (file) { 926 goto err_buffer;
927 list_del(&link->list);
928 kfree(link);
929 tu->tp.flags &= ~TP_FLAG_TRACE;
930 } else
931 tu->tp.flags &= ~TP_FLAG_PROFILE;
932 }
933 927
928 return 0;
929
930 err_buffer:
931 uprobe_buffer_disable();
932
933 err_flags:
934 if (file) {
935 list_del(&link->list);
936 kfree(link);
937 tu->tp.flags &= ~TP_FLAG_TRACE;
938 } else {
939 tu->tp.flags &= ~TP_FLAG_PROFILE;
940 }
934 return ret; 941 return ret;
935} 942}
936 943