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authorYang Yingliang <yangyingliang@huawei.com>2022-11-15 02:50:42 +0100
committerMartin K. Petersen <martin.petersen@oracle.com>2022-11-17 18:46:16 +0100
commitbc68e428d4963af0201e92159629ab96948f0893 (patch)
tree4cc39ca754d03de7b6c6cd62df1a29eaf4bc6a8c /drivers/target/loopback
parentscsi: mpi3mr: Suppress command reply debug prints (diff)
downloadlinux-bc68e428d4963af0201e92159629ab96948f0893.tar.xz
linux-bc68e428d4963af0201e92159629ab96948f0893.zip
scsi: target: tcm_loop: Fix possible name leak in tcm_loop_setup_hba_bus()
If device_register() fails in tcm_loop_setup_hba_bus(), the name allocated by dev_set_name() need be freed. As comment of device_register() says, it should use put_device() to give up the reference in the error path. So fix this by calling put_device(), then the name can be freed in kobject_cleanup(). The 'tl_hba' will be freed in tcm_loop_release_adapter(), so it don't need goto error label in this case. Fixes: 3703b2c5d041 ("[SCSI] tcm_loop: Add multi-fabric Linux/SCSI LLD fabric module") Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> Link: https://lore.kernel.org/r/20221115015042.3652261-1-yangyingliang@huawei.com Reviewed-by: Mike Christie <michael.chritie@oracle.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/target/loopback')
-rw-r--r--drivers/target/loopback/tcm_loop.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/target/loopback/tcm_loop.c b/drivers/target/loopback/tcm_loop.c
index 4407b56aa6d1..139031ccb700 100644
--- a/drivers/target/loopback/tcm_loop.c
+++ b/drivers/target/loopback/tcm_loop.c
@@ -397,6 +397,7 @@ static int tcm_loop_setup_hba_bus(struct tcm_loop_hba *tl_hba, int tcm_loop_host
ret = device_register(&tl_hba->dev);
if (ret) {
pr_err("device_register() failed for tl_hba->dev: %d\n", ret);
+ put_device(&tl_hba->dev);
return -ENODEV;
}
@@ -1073,7 +1074,7 @@ check_len:
*/
ret = tcm_loop_setup_hba_bus(tl_hba, tcm_loop_hba_no_cnt);
if (ret)
- goto out;
+ return ERR_PTR(ret);
sh = tl_hba->sh;
tcm_loop_hba_no_cnt++;