From: Shang XiaoJing shangxiaojing@huawei.com
[ Upstream commit 13b6269dd022aaa69ca8d1df374ab327504121cf ]
ocfs2_table_header should be free in ocfs2_stack_glue_init() if ocfs2_sysfs_init() failed, otherwise kmemleak will report memleak.
BUG: memory leak unreferenced object 0xffff88810eeb5800 (size 128): comm "modprobe", pid 4507, jiffies 4296182506 (age 55.888s) hex dump (first 32 bytes): c0 40 14 a0 ff ff ff ff 00 00 00 00 01 00 00 00 .@.............. 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<000000001e59e1cd>] __register_sysctl_table+0xca/0xef0 [<00000000c04f70f7>] 0xffffffffa0050037 [<000000001bd12912>] do_one_initcall+0xdb/0x480 [<0000000064f766c9>] do_init_module+0x1cf/0x680 [<000000002ba52db0>] load_module+0x6441/0x6f20 [<000000009772580d>] __do_sys_finit_module+0x12f/0x1c0 [<00000000380c1f22>] do_syscall_64+0x3f/0x90 [<000000004cf473bc>] entry_SYSCALL_64_after_hwframe+0x63/0xcd
Link: https://lkml.kernel.org/r/41651ca1-432a-db34-eb97-d35744559de1@linux.alibaba... Fixes: 3878f110f71a ("ocfs2: Move the hb_ctl_path sysctl into the stack glue.") Signed-off-by: Shang XiaoJing shangxiaojing@huawei.com Reviewed-by: Joseph Qi joseph.qi@linux.alibaba.com Cc: Mark Fasheh mark@fasheh.com Cc: Joel Becker jlbec@evilplan.org Cc: Junxiao Bi junxiao.bi@oracle.com Cc: Changwei Ge gechangwei@live.cn Cc: Gang He ghe@suse.com Cc: Jun Piao piaojun@huawei.com Signed-off-by: Andrew Morton akpm@linux-foundation.org Signed-off-by: Sasha Levin sashal@kernel.org --- fs/ocfs2/stackglue.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/fs/ocfs2/stackglue.c b/fs/ocfs2/stackglue.c index 03e1c6cd6f3c..52ee7c90dc5c 100644 --- a/fs/ocfs2/stackglue.c +++ b/fs/ocfs2/stackglue.c @@ -715,6 +715,8 @@ static struct ctl_table_header *ocfs2_table_header;
static int __init ocfs2_stack_glue_init(void) { + int ret; + strcpy(cluster_stack_name, OCFS2_STACK_PLUGIN_O2CB);
ocfs2_table_header = register_sysctl_table(ocfs2_root_table); @@ -724,7 +726,11 @@ static int __init ocfs2_stack_glue_init(void) return -ENOMEM; /* or something. */ }
- return ocfs2_sysfs_init(); + ret = ocfs2_sysfs_init(); + if (ret) + unregister_sysctl_table(ocfs2_table_header); + + return ret; }
static void __exit ocfs2_stack_glue_exit(void)