| commit | f66af459a931f25807e1df7915b2b66bb5978d82 | |
| author | Frederic Weisbecker <fweisbec@gmail.com> | |
| Wed, 22 Oct 2008 17:14:55 +0000 (22 19:14 +0200) | ||
| committer | Ingo Molnar <mingo@elte.hu> | |
| Mon, 27 Oct 2008 15:45:46 +0000 (27 16:45 +0100) | ||
| tree | bb88917429fe1ea4f6d6e088ead040b25d205a86 | treesnapshot (tar.gz zip) |
| parent | 5209f08dc8e5f520ca81b87fa9a7142f58a109f4 | commitdiff |
tracepoint: check if the probe has been registered
Impact: fix kernel crash that can trigger during tracing
If we try to remove a probe that has not been already registered,
the tracepoint_entry_remove_probe() function will dereference a NULL
pointer.
Check the probe before removing it to avoid crashes.
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Acked-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Acked-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Impact: fix kernel crash that can trigger during tracing
If we try to remove a probe that has not been already registered,
the tracepoint_entry_remove_probe() function will dereference a NULL
pointer.
Check the probe before removing it to avoid crashes.
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Acked-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Acked-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
| kernel/tracepoint.c | diffblobblamehistory |