linux-kernel - Re: [PATCH][CFT] [coredump] don't use __kernel_write() on kmap_local

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Date:   Mon, 3 Oct 2022 19:17:59 -0700
From:   Ira Weiny <ira.weiny@...el.com>
To:     "J. R. Okajima" <hooanon05g@...il.com>
CC:     Al Viro <viro@...iv.linux.org.uk>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        <linux-kernel@...r.kernel.org>, <linux-fsdevel@...r.kernel.org>
Subject: Re: [PATCH][CFT] [coredump] don't use __kernel_write() on
 kmap_local_page()

On Tue, Oct 04, 2022 at 07:58:14AM +0900, J. R. Okajima wrote:
> Al Viro:
> > Argh....  Try this:
> >
> > fix coredump breakage caused by badly tested "[coredump] don't use __kernel_write() on kmap_local_page()"
> 
> Thanx, it passed my local test.

My mess up too.  I thought I had tested this when I had tested the
kmap_to_page() fix.

:-(

This works for me too now that I have my git trees straight.

Sorry.
Ira

> 
> 
> > * fix for problem that occurs on rather uncommon setups (and hadn't
> > been observed in the wild) sent very late in the cycle.
> 
> If the commit was merged in RC versions, I guess someone found the
> problem earlier.
> 
> 
> J. R. Okajima