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| author | Robert Richter <robert.richter@amd.com> | 2011-05-26 18:22:54 +0200 |
|---|---|---|
| committer | Robert Richter <robert.richter@amd.com> | 2011-05-31 16:33:33 +0200 |
| commit | 6ac6519b93065625119a347be1cbcc1b89edb773 (patch) | |
| tree | 673965e52a026d00685e36105b45f74086c1f38c | |
| parent | cbf74cea070fa1f705de4712e25d9e56ae6543c7 (diff) | |
| download | op-kernel-dev-6ac6519b93065625119a347be1cbcc1b89edb773.zip op-kernel-dev-6ac6519b93065625119a347be1cbcc1b89edb773.tar.gz | |
oprofile: Free potentially owned tasks in case of errors
After registering the task free notifier we possibly have tasks in our
dying_tasks list. Free them after unregistering the notifier in case
of an error.
Cc: <stable@kernel.org> # .36+
Signed-off-by: Robert Richter <robert.richter@amd.com>
| -rw-r--r-- | drivers/oprofile/buffer_sync.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/drivers/oprofile/buffer_sync.c b/drivers/oprofile/buffer_sync.c index a3984f4..04250aa 100644 --- a/drivers/oprofile/buffer_sync.c +++ b/drivers/oprofile/buffer_sync.c @@ -141,6 +141,13 @@ static struct notifier_block module_load_nb = { .notifier_call = module_load_notify, }; +static void free_all_tasks(void) +{ + /* make sure we don't leak task structs */ + process_task_mortuary(); + process_task_mortuary(); +} + int sync_start(void) { int err; @@ -174,6 +181,7 @@ out3: profile_event_unregister(PROFILE_TASK_EXIT, &task_exit_nb); out2: task_handoff_unregister(&task_free_nb); + free_all_tasks(); out1: free_cpumask_var(marked_cpus); goto out; @@ -192,10 +200,7 @@ void sync_stop(void) mutex_unlock(&buffer_mutex); flush_cpu_work(); - /* make sure we don't leak task structs */ - process_task_mortuary(); - process_task_mortuary(); - + free_all_tasks(); free_cpumask_var(marked_cpus); } |
