Uncommon errors are better to get reported to dmesg so developers can
more easily figure out why pstore is unhappy with a backend attempting
to register.
Signed-off-by: Kees Cook <keesc...@chromium.org>
---
fs/pstore/platform.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/fs/pstore/platform.c b/fs/pstore/platform.c
index d69ef8a840b9..320a673ecb5b 100644
--- a/fs/pstore/platform.c
+++ b/fs/pstore/platform.c
@@ -673,11 +673,15 @@ int pstore_register(struct pstore_info *psi)
{
struct module *owner = psi->owner;
- if (backend && strcmp(backend, psi->name))
+ if (backend && strcmp(backend, psi->name)) {
+ pr_warn("ignoring unexpected backend '%s'\n", psi->name);
return -EPERM;
+ }
spin_lock(&pstore_lock);
if (psinfo) {
+ pr_warn("backend '%s' already loaded: ignoring '%s'\n",
+ psinfo->name, psi->name);
spin_unlock(&pstore_lock);
return -EBUSY;
}
--
2.7.4
--
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