This is a note to let you know that I've just added the patch titled
RDMA/rtrs-clt: Refactor the failure cases in alloc_clt
to the 5.11-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
rdma-rtrs-clt-refactor-the-failure-cases-in-alloc_cl.patch
and it can be found in the queue-5.11 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 2ed19589678e22cf64a001118940c8940bc4550e
Author: Guoqing Jiang <guoqing.jiang@xxxxxxxxxxxxxxx>
Date: Thu Dec 17 15:19:10 2020 +0100
RDMA/rtrs-clt: Refactor the failure cases in alloc_clt
[ Upstream commit eab098246625e91c1cbd6e8f75b09e4c9c28a9fc ]
Make all failure cases go to the common path to avoid duplicate code.
And some issued existed before.
1. clt need to be freed to avoid memory leak.
2. return ERR_PTR(-ENOMEM) if kobject_create_and_add fails, because
rtrs_clt_open checks the return value of by call "IS_ERR(clt)".
Fixes: 6a98d71daea1 ("RDMA/rtrs: client: main functionality")
Link: https://lore.kernel.org/r/20201217141915.56989-15-jinpu.wang@xxxxxxxxxxxxxxx
Signed-off-by: Guoqing Jiang <guoqing.jiang@xxxxxxxxxxxxxxx>
Reviewed-by: Md Haris Iqbal <haris.iqbal@xxxxxxxxxxxxxxx>
Signed-off-by: Jack Wang <jinpu.wang@xxxxxxxxxxxxxxx>
Signed-off-by: Jason Gunthorpe <jgg@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/infiniband/ulp/rtrs/rtrs-clt.c b/drivers/infiniband/ulp/rtrs/rtrs-clt.c
index b3fb5fb93815f..172bf7f221ff0 100644
--- a/drivers/infiniband/ulp/rtrs/rtrs-clt.c
+++ b/drivers/infiniband/ulp/rtrs/rtrs-clt.c
@@ -2570,11 +2570,8 @@ static struct rtrs_clt *alloc_clt(const char *sessname, size_t paths_num,
clt->dev.class = rtrs_clt_dev_class;
clt->dev.release = rtrs_clt_dev_release;
err = dev_set_name(&clt->dev, "%s", sessname);
- if (err) {
- free_percpu(clt->pcpu_path);
- kfree(clt);
- return ERR_PTR(err);
- }
+ if (err)
+ goto err;
/*
* Suppress user space notification until
* sysfs files are created
@@ -2582,29 +2579,31 @@ static struct rtrs_clt *alloc_clt(const char *sessname, size_t paths_num,
dev_set_uevent_suppress(&clt->dev, true);
err = device_register(&clt->dev);
if (err) {
- free_percpu(clt->pcpu_path);
put_device(&clt->dev);
- return ERR_PTR(err);
+ goto err;
}
clt->kobj_paths = kobject_create_and_add("paths", &clt->dev.kobj);
if (!clt->kobj_paths) {
- free_percpu(clt->pcpu_path);
- device_unregister(&clt->dev);
- return NULL;
+ err = -ENOMEM;
+ goto err_dev;
}
err = rtrs_clt_create_sysfs_root_files(clt);
if (err) {
- free_percpu(clt->pcpu_path);
kobject_del(clt->kobj_paths);
kobject_put(clt->kobj_paths);
- device_unregister(&clt->dev);
- return ERR_PTR(err);
+ goto err_dev;
}
dev_set_uevent_suppress(&clt->dev, false);
kobject_uevent(&clt->dev.kobj, KOBJ_ADD);
return clt;
+err_dev:
+ device_unregister(&clt->dev);
+err:
+ free_percpu(clt->pcpu_path);
+ kfree(clt);
+ return ERR_PTR(err);
}
static void wait_for_inflight_permits(struct rtrs_clt *clt)
