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f2fs: fix memleak of kobject

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If kobject_init_and_add() failed, caller needs to invoke kobject_put()
to release kobject explicitly.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Chao Yu 2019-12-30 17:41:41 +08:00 • committed by Jaegeuk Kim
parent 3e5e479a39
commit fe396ad8e7
1 changed files with 8 additions and 3 deletions
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11
fs/f2fs/sysfs.c
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@ -740,10 +740,12 @@ int __init f2fs_init_sysfs(void)
ret = kobject_init_and_add(&f2fs_feat, &f2fs_feat_ktype, ret = kobject_init_and_add(&f2fs_feat, &f2fs_feat_ktype,
NULL, "features"); NULL, "features");
if (ret) if (ret) {
kobject_put(&f2fs_feat);
kset_unregister(&f2fs_kset); kset_unregister(&f2fs_kset);
else } else {
f2fs_proc_root = proc_mkdir("fs/f2fs", NULL); f2fs_proc_root = proc_mkdir("fs/f2fs", NULL);
}
return ret; return ret;
} }
@ -764,8 +766,11 @@ int f2fs_register_sysfs(struct f2fs_sb_info *sbi)
init_completion(&sbi->s_kobj_unregister); init_completion(&sbi->s_kobj_unregister);
err = kobject_init_and_add(&sbi->s_kobj, &f2fs_sb_ktype, NULL, err = kobject_init_and_add(&sbi->s_kobj, &f2fs_sb_ktype, NULL,
"%s", sb->s_id); "%s", sb->s_id);
if (err) if (err) {
kobject_put(&sbi->s_kobj);
wait_for_completion(&sbi->s_kobj_unregister);
return err; return err;
}
if (f2fs_proc_root) if (f2fs_proc_root)
sbi->s_proc = proc_mkdir(sb->s_id, f2fs_proc_root); sbi->s_proc = proc_mkdir(sb->s_id, f2fs_proc_root);