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Subject[PATCH] staging: lustre: add error handling for try_module_get
Date
When try_module_get fails, the lack of error-handling code may
cause unexpected results.

This patch adds error-handling code after calling try_module_get.

Signed-off-by: Zhouyang Jia <jiazhouyang09@gmail.com>
---
drivers/staging/lustre/lnet/klnds/socklnd/socklnd.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/staging/lustre/lnet/klnds/socklnd/socklnd.c b/drivers/staging/lustre/lnet/klnds/socklnd/socklnd.c
index 7086678..72a42bd 100644
--- a/drivers/staging/lustre/lnet/klnds/socklnd/socklnd.c
+++ b/drivers/staging/lustre/lnet/klnds/socklnd/socklnd.c
@@ -2422,7 +2422,10 @@ ksocknal_base_startup(void)

/* flag lists/ptrs/locks initialised */
ksocknal_data.ksnd_init = SOCKNAL_INIT_DATA;
- try_module_get(THIS_MODULE);
+ if (!try_module_get(THIS_MODULE)) {
+ CERROR("%s: cannot get module\n", __func__);
+ goto failed;
+ }

ksocknal_data.ksnd_sched_info = cfs_percpt_alloc(lnet_cpt_table(),
sizeof(*info));
--
2.7.4
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