From: Chen Zhongjin <chenzhongjin@huawei.com>
Date: Fri, 11 Nov 2022 15:40:46 +0800
Subject: scsi: efct: Fix possible memleak in efct_device_init()
Git-commit: bb0cd225dd37df1f4a22e36dad59ff33178ecdfc
Patch-mainline: v6.1 or v6.1-rc9 (next release)
References: git-fixes

In efct_device_init(), when efct_scsi_reg_fc_transport() fails,
efct_scsi_tgt_driver_exit() is not called to release memory for
efct_scsi_tgt_driver_init() and causes memleak:

unreferenced object 0xffff8881020ce000 (size 2048):
  comm "modprobe", pid 465, jiffies 4294928222 (age 55.872s)
  backtrace:
    [<0000000021a1ef1b>] kmalloc_trace+0x27/0x110
    [<000000004c3ed51c>] target_register_template+0x4fd/0x7b0 [target_core_mod]
    [<00000000f3393296>] efct_scsi_tgt_driver_init+0x18/0x50 [efct]
    [<00000000115de533>] 0xffffffffc0d90011
    [<00000000d608f646>] do_one_initcall+0xd0/0x4e0
    [<0000000067828cf1>] do_init_module+0x1cc/0x6a0
    ...

Fixes: 4df84e846624 ("scsi: elx: efct: Driver initialization routines")
Signed-off-by: Chen Zhongjin <chenzhongjin@huawei.com>
Link: https://lore.kernel.org/r/20221111074046.57061-1-chenzhongjin@huawei.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Acked-by: Lee Duncan <lduncan@suse.com>
---
 drivers/scsi/elx/efct/efct_driver.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/scsi/elx/efct/efct_driver.c b/drivers/scsi/elx/efct/efct_driver.c
index b08fc8839808..49fd2cfed70c 100644
--- a/drivers/scsi/elx/efct/efct_driver.c
+++ b/drivers/scsi/elx/efct/efct_driver.c
@@ -42,6 +42,7 @@ efct_device_init(void)
 
 	rc = efct_scsi_reg_fc_transport();
 	if (rc) {
+		efct_scsi_tgt_driver_exit();
 		pr_err("failed to register to FC host\n");
 		return rc;
 	}