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Message-ID: <874lpelxzh.fsf@xmission.com>
Date: Tue, 28 Nov 2017 00:26:58 -0600
From: ebiederm@...ssion.com (Eric W. Biederman)
To: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: "Tobin C. Harding" <me@...in.cc>, "Jason A. Donenfeld"
<Jason@...c4.com>, "Theodore Ts'o" <tytso@....edu>, Kees Cook
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<william.c.roberts@...el.com>, Tejun Heo <tj@...nel.org>, Jordan Glover
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Subject: Re: [PATCH 0/5] add printk specifier %px, unique identifier
Linus Torvalds <torvalds@...ux-foundation.org> writes:
> On Mon, Nov 27, 2017 at 4:03 PM, Linus Torvalds
> <torvalds@...ux-foundation.org> wrote:
>>
>> So the big remaining ones for me are the /proc/<pid>/stack (stack
>> pointers) and the /proc/net/* ones.
>>
>> I'm a bit disappointed that those haven't been fixed already and
>> aren't even in this series..
>
> Oh well, I just did /proc/<pid>/stack by making it just print 0
> unconditionally rather than the hex number.
Patch?
I know I have used /proc/<pid>/stack manually many times when looking
at a system where something is hung/weird and I needed to see what is
going on. The backtrace inside the kernel can be invaluable.
At the same time I don't know if we actually need the hex address.
But please don't break that interface it is very useful.
Eric
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