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| author | Kefeng Wang <wangkefeng.wang@huawei.com> | 2020-06-09 13:52:00 +0000 |
|---|---|---|
| committer | Steven Rostedt (VMware) <rostedt@goodmis.org> | 2020-06-16 21:21:02 -0400 |
| commit | 9fbc01cdba66e988122ccdc6094cfd85d9587769 (patch) | |
| tree | 28d9512955eacc1e7ff4ffd892f4d08b34804a62 /samples/ftrace | |
| parent | e9b7b1c0c103a623be1a65c39f98719803440871 (diff) | |
| download | linux-9fbc01cdba66e988122ccdc6094cfd85d9587769.tar.gz linux-9fbc01cdba66e988122ccdc6094cfd85d9587769.tar.bz2 linux-9fbc01cdba66e988122ccdc6094cfd85d9587769.zip | |
sample-trace-array: Remove trace_array 'sample-instance'
Remove trace_array 'sample-instance' if kthread_run fails
in sample_trace_array_init().
Link: https://lkml.kernel.org/r/20200609135200.2206726-1-wangkefeng.wang@huawei.com
Cc: stable@vger.kernel.org
Fixes: 89ed42495ef4a ("tracing: Sample module to demonstrate kernel access to Ftrace instances.")
Reviewed-by: Divya Indi <divya.indi@oracle.com>
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Diffstat (limited to 'samples/ftrace')
| -rw-r--r-- | samples/ftrace/sample-trace-array.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/samples/ftrace/sample-trace-array.c b/samples/ftrace/sample-trace-array.c index 9e437f930280..6aba02a31c96 100644 --- a/samples/ftrace/sample-trace-array.c +++ b/samples/ftrace/sample-trace-array.c @@ -115,8 +115,12 @@ static int __init sample_trace_array_init(void) trace_printk_init_buffers(); simple_tsk = kthread_run(simple_thread, NULL, "sample-instance"); - if (IS_ERR(simple_tsk)) + if (IS_ERR(simple_tsk)) { + trace_array_put(tr); + trace_array_destroy(tr); return -1; + } + return 0; } |