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The first is a long standing bug that causes bogus data to show up in the refcnt field of the module_refcnt tracepoint. It was introduced by a merge conflict resolution back in 2.6.35-rc days. The result should be refcnt = incs - decs, but instead it did refcnt = incs + decs. The second fix is to a bug that was introduced in this merge window that allowed for a tracepoint funcs pointer to be used after it was freed. Moving the location of where the probes are released solved the problem. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQEcBAABAgAGBQJTa/GQAAoJEKQekfcNnQGuGGUIAJCkrDZdnliE6f6Ur8aXJoX7 gjkXRMmCjLM/X8yQc1H8YwDbSgaTQNmeyQvBbBZ1hUQBaMf5ft4KuFYMGvQRk3jp ZheQVumSzsQfO+yp5dRmzJ6H2G0BCInxq9VZyufZkCPUGsMyiIc+7+SGHEfjMgmW 9XFWyfSr09thVlGanr+OTLXfwFm7GMD9nohLKXh9dhi/tO/gHq6lI83HK42Y1bWG 4fZWJjO5GgCVbW4RanB6yr9RIe8NESKl37JYsAZX61iAvT8/mqIYGWx0i/DEGN5Q ap3WW5QPALLUlvUVgI9Um0KOrotbmKtnRwPeHYDmSQODwuKj5veiLXxL9XdHPLU= =lt0T -----END PGP SIGNATURE----- Merge tag 'trace-fixes-v3.15-rc4-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace Pull tracing fixes from Steven Rostedt: "This contains two fixes. The first is a long standing bug that causes bogus data to show up in the refcnt field of the module_refcnt tracepoint. It was introduced by a merge conflict resolution back in 2.6.35-rc days. The result should be 'refcnt = incs - decs', but instead it did 'refcnt = incs + decs'. The second fix is to a bug that was introduced in this merge window that allowed for a tracepoint funcs pointer to be used after it was freed. Moving the location of where the probes are released solved the problem" * tag 'trace-fixes-v3.15-rc4-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: tracepoint: Fix use of tracepoint funcs after rcu free trace: module: Maintain a valid user count |
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