From: Yang Yingliang yangyingliang@huawei.com
mainline inclusion from mainline-v6.3-rc1 commit a86367803838b369fe5486ac18771d14723c258c category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I9MMNG
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?i...
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Current some drivers(like iscsi) call transport_register_device() failed, they don't call transport_destroy_device() to release the memory allocated in transport_setup_device(), because they don't know what was done, it should be internal thing to release the resource in register function. So fix this leak by calling destroy function inside register function.
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Signed-off-by: Yang Yingliang yangyingliang@huawei.com Link: https://lore.kernel.org/r/20221110102307.3492557-1-yangyingliang@huawei.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: dinglongwei dinglongwei1@huawei.com --- include/linux/transport_class.h | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/include/linux/transport_class.h b/include/linux/transport_class.h index 63076fb835e3..2efc271a96fa 100644 --- a/include/linux/transport_class.h +++ b/include/linux/transport_class.h @@ -70,8 +70,14 @@ void transport_destroy_device(struct device *); static inline int transport_register_device(struct device *dev) { + int ret; + transport_setup_device(dev); - return transport_add_device(dev); + ret = transport_add_device(dev); + if (ret) + transport_destroy_device(dev); + + return ret; }
static inline void