linux-kernel - Re: [PATCH 3/3] s390/mm: fix mis-accounting of pgtable

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Date:   Tue, 27 Nov 2018 12:52:11 +0100
From:   Heiko Carstens <heiko.carstens@...ibm.com>
To:     Guenter Roeck <linux@...ck-us.net>
Cc:     "Kirill A. Shutemov" <kirill@...temov.name>,
        "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
        Li Wang <liwang@...hat.com>,
        Janosch Frank <frankja@...ux.vnet.ibm.com>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        Linux-MM <linux-mm@...ck.org>,
        Martin Schwidefsky <schwidefsky@...ibm.com>
Subject: Re: [PATCH 3/3] s390/mm: fix mis-accounting of pgtable_bytes

On Tue, Nov 27, 2018 at 03:47:13AM -0800, Guenter Roeck wrote:
> >E.g. something like the below. If there aren't any objections, I will
> >provide a proper patch with changelog, etc.
> >
> >diff --git a/kernel/fork.c b/kernel/fork.c
> >index 07cddff89c7b..d7aeec03c57f 100644
> >--- a/kernel/fork.c
> >+++ b/kernel/fork.c
> >@@ -647,8 +647,8 @@ static void check_mm(struct mm_struct *mm)
> >  	}
> >  	if (mm_pgtables_bytes(mm))
> >-		pr_alert("BUG: non-zero pgtables_bytes on freeing mm: %ld\n",
> >-				mm_pgtables_bytes(mm));
> >+		printk_once(KERN_ALERT "BUG: non-zero pgtables_bytes on freeing mm: %ld\n",
> >+			    mm_pgtables_bytes(mm));
> 
> pr_alert_once ?

Already changed and posted:

https://lore.kernel.org/lkml/20181127083603.39041-1-heiko.carstens@de.ibm.com/