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| author |   Divya Indi <divya.indi@oracle.com> | 2019-08-14 10:55:24 -0700 |
|---|---|---|
| committer |   Steven Rostedt (VMware) <rostedt@goodmis.org> | 2019-11-13 09:37:29 -0500 |
| commit | e585e6469d6f476b82aa148dc44aaf7ae269a4e2 (patch) | |
| tree | a165cec89202db3d956b465a055fadfa92c792b7 /kernel/module.c | |
| parent | tracing: Declare newly exported APIs in include/linux/trace.h (diff) | |
| download | linux-dev-e585e6469d6f476b82aa148dc44aaf7ae269a4e2.tar.xz linux-dev-e585e6469d6f476b82aa148dc44aaf7ae269a4e2.zip | |
tracing: Verify if trace array exists before destroying it.
A trace array can be destroyed from userspace or kernel. Verify if the
trace array exists before proceeding to destroy/remove it.
Link: http://lkml.kernel.org/r/1565805327-579-3-git-send-email-divya.indi@oracle.com
Reviewed-by: Aruna Ramakrishna <aruna.ramakrishna@oracle.com>
Signed-off-by: Divya Indi <divya.indi@oracle.com>
[ Removed unneeded braces ]
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Diffstat (limited to '')
| -rw-r--r-- | kernel/module.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/kernel/module.c b/kernel/module.c index ff2d7359a418..6e2fd40a6ed9 100644 --- a/kernel/module.c +++ b/kernel/module.c @@ -3728,7 +3728,6 @@ static int complete_formation(struct module *mod, struct load_info *info) module_enable_ro(mod, false); module_enable_nx(mod); - module_enable_x(mod); /* Mark state as coming so strong_try_module_get() ignores us, * but kallsyms etc. can see us. */ @@ -3751,6 +3750,11 @@ static int prepare_coming_module(struct module *mod) if (err) return err; + /* Make module executable after ftrace is enabled */ + mutex_lock(&module_mutex); + module_enable_x(mod); + mutex_unlock(&module_mutex); + blocking_notifier_call_chain(&module_notify_list, MODULE_STATE_COMING, mod); return 0; |