Please consider to prepare a ReadyKernel patch for it.

This is needed for all kernels prior to 3.10.0-693.x

https://readykernel.com/

--
Best regards,

Konstantin Khorenko,
Virtuozzo Linux Kernel Team

On 09/05/2017 03:18 PM, Konstantin Khorenko wrote:
The commit is pushed to "branch-rh7-3.10.0-514.26.1.vz7.35.x-ovz" and will 
appear at https://src.openvz.org/scm/ovz/vzkernel.git
after rh7-3.10.0-514.26.1.vz7.35.6
------>
commit e851cc10aa14e1ca311187fda9a3a53a5e3dee25
Author: Konstantin Khorenko <khore...@virtuozzo.com>
Date:   Tue Sep 5 15:13:26 2017 +0300

    ve/autofs: drop fix double pid put in error path and leaked pid on error 
path in autofs4_fill_super

    Drop redundant hunks of 078889e ("VE/AUTOFS: port 71-diff-autofs-combined"),
    they lead to unbalanced pid get/put in autofs4_fill_super().

    Fixes: 078889e ("VE/AUTOFS: port 71-diff-autofs-combined")

    Signed-off-by: Konstantin Khorenko <khore...@virtuozzo.com>
---
 fs/autofs4/autofs_i.h | 1 -
 fs/autofs4/inode.c    | 6 ++----
 2 files changed, 2 insertions(+), 5 deletions(-)

diff --git a/fs/autofs4/autofs_i.h b/fs/autofs4/autofs_i.h
index c957d14..39f197c 100644
--- a/fs/autofs4/autofs_i.h
+++ b/fs/autofs4/autofs_i.h
@@ -123,7 +123,6 @@ struct autofs_sb_info {
        struct list_head active_list;
        struct list_head expiring_list;
        struct rcu_head rcu;
-       unsigned is32bit:1;
 };

 static inline struct autofs_sb_info *autofs4_sbi(struct super_block *sb)
diff --git a/fs/autofs4/inode.c b/fs/autofs4/inode.c
index b23cf2a..af7506c 100644
--- a/fs/autofs4/inode.c
+++ b/fs/autofs4/inode.c
@@ -127,7 +127,7 @@ static const match_table_t tokens = {
        {Opt_indirect, "indirect"},
        {Opt_direct, "direct"},
        {Opt_offset, "offset"},
-{Opt_err, NULL}
+       {Opt_err, NULL}
 };

 static int parse_options(char *options, int *pipefd, kuid_t *uid, kgid_t *gid,
@@ -313,7 +313,7 @@ int autofs4_fill_super(struct super_block *s, void *data, 
int silent)

        if (!pipe) {
                printk("autofs: could not open pipe file descriptor\n");
-               goto fail_put_pid;
+               goto fail_dput;
        }
        ret = autofs_prepare_pipe(pipe);
        if (ret < 0)
@@ -335,8 +335,6 @@ int autofs4_fill_super(struct super_block *s, void *data, 
int silent)
        printk("autofs: pipe file descriptor does not contain proper ops\n");
        fput(pipe);
        /* fall through */
-fail_put_pid:
-       put_pid(sbi->oz_pgrp);
 fail_dput:
        dput(root);
        goto fail_free;
.

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