From: lee.jones@linaro.org (Lee Jones)
To: linux-arm-kernel@lists.infradead.org
Subject: [RESEND v4 2/6] remoteproc: debugfs: Add ability to boot remote processor using debugfs
Date: Fri, 4 Dec 2015 08:24:27 +0000 [thread overview]
Message-ID: <20151204082427.GC26902@x1> (raw)
In-Reply-To: <2473673.tSymyNlg3h@wuerfel>
On Thu, 03 Dec 2015, Arnd Bergmann wrote:
> On Thursday 03 December 2015 17:28:30 Lee Jones wrote:
> > >
> > > Ah, interesting. I haven't tried myself, and just tried to read the
> > > code. Maybe glibc already catches zero-length writes before it gets
> > > into the kernel, or I just missed the part of the syscall that checks
> > > for this.
> >
> > Glibc is responsible indeed:
> >
> > http://osxr.org/glibc/source/io/write.c
>
> Ok, so an attacker can force the stack overflow by calling
> syscall(__NR_write, fd, p, 0) if that has any potential value,
> but normal users won't hit this case.
Right. I have fixed the issue (and another one I found) anyway, if
only to rid the GCC warning.
--
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org ? Open source software for ARM SoCs
Follow Linaro: Facebook | Twitter | Blog
next prev parent reply other threads:[~2015-12-04 8:24 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-24 13:14 [RESEND v4 0/6] remoteproc: Add driver for STMicroelectronics platforms Lee Jones
2015-11-24 13:14 ` [RESEND v4 1/6] remoteproc: dt: Provide bindings for ST's Remote Processor Controller driver Lee Jones
2015-11-25 0:07 ` Rob Herring
2015-12-28 18:33 ` Bjorn Andersson
2015-11-24 13:14 ` [RESEND v4 2/6] remoteproc: debugfs: Add ability to boot remote processor using debugfs Lee Jones
2015-11-27 17:00 ` Bjorn Andersson
2015-12-03 12:26 ` Lee Jones
2015-12-03 12:49 ` Arnd Bergmann
2015-12-03 13:03 ` Lee Jones
2015-12-03 13:19 ` Arnd Bergmann
2015-12-03 17:28 ` Lee Jones
2015-12-03 21:12 ` Arnd Bergmann
2015-12-03 21:22 ` Bjorn Andersson
2015-12-04 8:24 ` Lee Jones [this message]
2015-12-28 18:38 ` Bjorn Andersson
2016-01-12 10:53 ` Lee Jones
2015-11-24 13:14 ` [RESEND v4 3/6] remoteproc: Supply controller driver for ST's Remote Processors Lee Jones
2015-12-28 18:33 ` Bjorn Andersson
2015-11-24 13:14 ` [RESEND v4 4/6] MAINTAINERS: Add ST's Remote Processor Driver to ARM/STI ARCHITECTURE Lee Jones
2015-11-24 13:14 ` [RESEND v4 5/6] ARM: STiH407: Add nodes for RemoteProc Lee Jones
2015-11-24 13:14 ` [RESEND v4 6/6] ARM: STiH407: Move over to using the 'reserved-memory' API for obtaining DMA memory Lee Jones
2015-11-26 8:45 ` [RESEND v4 0/6] remoteproc: Add driver for STMicroelectronics platforms Ohad Ben-Cohen
2015-11-26 9:10 ` Lee Jones
2015-11-26 9:32 ` Ohad Ben-Cohen
2015-12-28 18:41 ` Bjorn Andersson
2015-12-29 8:23 ` Ohad Ben-Cohen
2016-01-12 12:30 ` Lee Jones
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