The patch titled
Subject: ocfs2: fix memory leak in ocfs2_stack_glue_init()
has been added to the -mm mm-nonmm-unstable branch. Its filename is
ocfs2-fix-memory-leak-in-ocfs2_stack_glue_init.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/ocfs2-fix-memory-leak-in-ocfs2_stack_glue_init.patch
This patch will later appear in the mm-nonmm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***
The -mm tree is included into linux-next via the mm-everything
branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
and is updated there every 2-3 working days
------------------------------------------------------
From: Shang XiaoJing <shangxiaojing@xxxxxxxxxx>
Subject: ocfs2: fix memory leak in ocfs2_stack_glue_init()
Date: Tue, 1 Nov 2022 19:15:33 +0800
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@xxxxxxxxxxxxxxxxx
Fixes: 3878f110f71a ("ocfs2: Move the hb_ctl_path sysctl into the stack glue.")
Signed-off-by: Shang XiaoJing <shangxiaojing@xxxxxxxxxx>
Reviewed-by: Joseph Qi <joseph.qi@xxxxxxxxxxxxxxxxx>
Cc: Mark Fasheh <mark@xxxxxxxxxx>
Cc: Joel Becker <jlbec@xxxxxxxxxxxx>
Cc: Junxiao Bi <junxiao.bi@xxxxxxxxxx>
Cc: Changwei Ge <gechangwei@xxxxxxx>
Cc: Gang He <ghe@xxxxxxxx>
Cc: Jun Piao <piaojun@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/ocfs2/stackglue.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
--- a/fs/ocfs2/stackglue.c~ocfs2-fix-memory-leak-in-ocfs2_stack_glue_init
+++ a/fs/ocfs2/stackglue.c
@@ -669,6 +669,8 @@ static struct ctl_table_header *ocfs2_ta
static int __init ocfs2_stack_glue_init(void)
{
+ int ret;
+
strcpy(cluster_stack_name, OCFS2_STACK_PLUGIN_O2CB);
ocfs2_table_header = register_sysctl("fs/ocfs2/nm", ocfs2_nm_table);
@@ -678,7 +680,11 @@ static int __init ocfs2_stack_glue_init(
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)
_
Patches currently in -mm which might be from shangxiaojing@xxxxxxxxxx are
ocfs2-fix-memory-leak-in-ocfs2_stack_glue_init.patch
