From: Andreas Arnez <arnez@linux.vnet.ibm.com>
To: Pedro Alves <palves@redhat.com>
Cc: gdb-patches@sourceware.org
Subject: Re: [PATCH 3/3] linux-nat: Exploit /proc/<pid>/mem for writing
Date: Tue, 14 Mar 2017 09:54:00 -0000 [thread overview]
Message-ID: <m3zigodw08.fsf@oc1027705133.ibm.com> (raw)
In-Reply-To: <02db005d-ce53-2ed7-7668-31b721621f54@redhat.com> (Pedro Alves's message of "Mon, 13 Mar 2017 20:05:06 +0000")
On Mon, Mar 13 2017, Pedro Alves wrote:
> On 03/06/2017 04:00 PM, Andreas Arnez wrote:
>> So far linux_proc_xfer_partial refused to handle write requests. This is
>> still based on the assumption that the Linux kernel does not support
>> writes to /proc/<pid>/mem. That used to be true, but has changed with
>> Linux 2.6.39 released in May 2011.
>
> Hey, I had not noticed that. Awesome.
>
> (There's also process_vm_readv / process_vm_writev.)
Right. This reminds me that I've started a patch for exploiting
process_vm_readv/writev two years ago, but then abandoned it. There was
some problem with it, but I don't recall the details. Maybe I can dig
it out and try again...
--
Andreas
prev parent reply other threads:[~2017-03-14 9:54 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-03-06 16:01 [PATCH 0/3] PR gdb/21220: Fix quadratic runtime of memory writes into inferior on GNU/Linux Andreas Arnez
2017-03-06 16:01 ` [PATCH 1/3] inf-ptrace: Do not stop memory transfers after a single word Andreas Arnez
2017-03-08 19:10 ` Simon Marchi
2017-03-09 17:22 ` Andreas Arnez
2017-03-10 15:49 ` Simon Marchi
2017-03-13 19:39 ` Pedro Alves
2017-03-13 19:50 ` Andreas Arnez
2017-03-13 19:51 ` Pedro Alves
2017-03-14 15:12 ` Andreas Arnez
2017-03-14 15:23 ` Pedro Alves
2017-03-06 16:02 ` [PATCH 2/3] Test case for dump/restore of large array Andreas Arnez
2017-03-13 19:51 ` Pedro Alves
2017-03-06 16:03 ` [PATCH 3/3] linux-nat: Exploit /proc/<pid>/mem for writing Andreas Arnez
2017-03-13 20:05 ` Pedro Alves
2017-03-13 20:08 ` Pedro Alves
2017-03-14 11:23 ` Andreas Arnez
2017-03-14 9:54 ` Andreas Arnez [this message]
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