On Wed, Feb 26, 2020 at 12:57 PM Takashi Yamamoto
wrote:
>
> hi,
>
> On Wed, Feb 26, 2020 at 1:36 PM Xiang Xiao wrote:
> >
> > For kernel build, all symbols need be resolved:
> > 1.We need add libapps.a into LDLIBS to resolve nsh_*, which remove
> > accidentally in commit 4ee39e208048f075860
>
>
hi,
On Wed, Feb 26, 2020 at 1:36 PM Xiang Xiao wrote:
>
> For kernel build, all symbols need be resolved:
> 1.We need add libapps.a into LDLIBS to resolve nsh_*, which remove
> accidentally in commit 4ee39e208048f075860
it removed only "ifneq ($(CONFIG_BUILD_KERNEL),y)" block.
it should not affe
For kernel build, all symbols need be resolved:
1.We need add libapps.a into LDLIBS to resolve nsh_*, which remove
accidentally in commit 4ee39e208048f075860
2.LDLIBS should contain libproxy.a to resolve sched_*, and libc.a for
fprintf, but these library should in LDLIBS automatically.
Thanks
Xia
liuguo09 opened a new pull request #9: fulllist: remove sim:mtdpart and
sim:mtdrwb configs
URL: https://github.com/apache/incubator-nuttx-testing/pull/9
Remove sim:mtdpart and sim:mtdrwb configs since i386 libz not available
now in Apache Jenkins slaves. Revert this change once i386 libz
Hi,
There are some instructions for it used to be done here:
https://github.com/apache/incubator-nuttx/blob/master/boards/arm/sama5/sama5d4-ek/README.txt#L4018
However, a lot has changed in the apps/ build so you will probably need
to get updates from Xiao Xiang. Those instructions were vali
hi,
how can i build userspace for CONFIG_BUILD_KERNEL?
using sama5d4-ek:knsh config,
i tried "make TOPDIR=$(pwd) APPDIR=$(pwd)/../apps -C ../apps install".
it generated some binaries like the following.
but i don't see how it will get nsh_consolemain etc.
spacetanuki% nm ../apps/bin/init
00c
Dear podling,
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The board meeting is scheduled for Wed, 18 March 2020, 10:30 am PDT.
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On Tue, Feb 25, 2020 at 1:15 PM Gregory Nutt wrote:
>
>
> > Commit 1f1356a2f5ee91ae077038c9e7b7a8fccc4180b8 introduces a compiler
> > warning.
> >
> > The fix is simple: Include in net/icmp/icmp_input.c.
> >
> > Something is broken at GitHub (or my GitHub account, or my
> > incubator-nuttx fork,
Commit 1f1356a2f5ee91ae077038c9e7b7a8fccc4180b8 introduces a compiler warning.
The fix is simple: Include in net/icmp/icmp_input.c.
Something is broken at GitHub (or my GitHub account, or my
incubator-nuttx fork, or something). Therefore I am sending a patch
instead of a pull request.
Patch
Commit 1f1356a2f5ee91ae077038c9e7b7a8fccc4180b8 introduces a compiler warning.
The fix is simple: Include in net/icmp/icmp_input.c.
Something is broken at GitHub (or my GitHub account, or my
incubator-nuttx fork, or something). Therefore I am sending a patch
instead of a pull request.
Patch att
"During system calls, the user mode thread’s access to the system call and
the *passed-in parameters are all validated*.
I think this is a fine thing to do and would welcome such checks into
the OS. We would have to be careful. In the case of read(), for example:
ssize_t read(int fd,
But stub call into the real and complex implementation and then the
kernel stack will contain many return address point, the hack can
command kernel write what he want into this region and modify some
return address point to that region, then the kernel will jump to the
code eventually.
That is
On Wed, Feb 26, 2020 at 12:34 AM Gregory Nutt wrote:
>
> On 2/25/2020 10:26 AM, Xiang Xiao wrote:
> > On Tue, Feb 25, 2020 at 11:59 PM Gregory Nutt wrote:
> >> Hi,
> > i meant that, if userspace wants to read some kernel memory, it can pass
> > the kernel pointer to eg. write system call
On Tue, Feb 25, 2020 at 5:27 PM Gregory Nutt wrote:
>
> > ... How are syscalls dealt in other RTOS using MPU?
>
> For the case of the MPU, there is no general answer to that. I don't
> think that there is any standard model for the use of the MPU in a
> Unix-like system.
>
> NuttX uses the MPU t
On 2/25/2020 10:26 AM, Xiang Xiao wrote:
On Tue, Feb 25, 2020 at 11:59 PM Gregory Nutt wrote:
Hi,
i meant that, if userspace wants to read some kernel memory, it can pass
the kernel pointer to eg. write system call as the buffer argument,
and then read the contents of the file.
I guess I stil
... How are syscalls dealt in other RTOS using MPU?
For the case of the MPU, there is no general answer to that. I don't
think that there is any standard model for the use of the MPU in a
Unix-like system.
NuttX uses the MPU to create a Kernel space with the OS and critical
board logic
On Tue, Feb 25, 2020 at 11:59 PM Gregory Nutt wrote:
>
> Hi,
> >>
> >>> i meant that, if userspace wants to read some kernel memory, it can pass
> >>> the kernel pointer to eg. write system call as the buffer argument,
> >>> and then read the contents of the file.
> >> I guess I still don't unders
On Tue, Feb 25, 2020 at 5:08 PM Nathan Hartman
wrote:
> ...
>
If you need the sort of "security" that makes it possible to run
> totally untrusted code, then maybe you need a full blown operating
> system, which also comes with a full blown computer and not an
> embedded microcontroller.
>
Despi
On Tue, Feb 25, 2020 at 10:59 AM Gregory Nutt wrote:
I think that most syscall which contain pointer has the security issue
in PROTECTED/KERNEL mode.
Certainly if high security is need, they all should be reviewed. Linux
goes to a lot of trouble to access data pointed to by user-provided
poi
Hello,
I dont agree. A fundamental feature to avoid widespread developement of
the so-called Internet of Shit is basic embedded security.
Some thoughts:
An embedded system can have a minimal security. Of course security has
several levels from non-existent to ideal.
Not having a full PKI
On Tue, Feb 25, 2020 at 10:59 AM Gregory Nutt wrote:
> > I think that most syscall which contain pointer has the security issue
> > in PROTECTED/KERNEL mode.
>
> Certainly if high security is need, they all should be reviewed. Linux
> goes to a lot of trouble to access data pointed to by user-prov
Hi,
i meant that, if userspace wants to read some kernel memory, it can pass
the kernel pointer to eg. write system call as the buffer argument,
and then read the contents of the file.
I guess I still don't understand. Access is still via file descriptor.
You could certainly clobber kernel me
Or... Do I have to *write the data to corresponding hardware registers in
the enque itself *and wait for the interrupt routine to receive the data
and release the semaphore? Basically enque of Lpc17xxx (which I am using as
reference) seems generic and not updating any hardware registers...
With be
Hi Greg and all,
I am developing the USB Host driver for RX65N, and using lpc17xxx port as
my basic reference. Currently I can detect the device and initiate the
standard "usbhost_enumerate()" function. This calls tballoc twice and
prepares the buffer for (i) first setup packet request and (ii) for
On Tue, Feb 25, 2020 at 10:08 PM Gregory Nutt wrote:
>
>
> > i meant that, if userspace wants to read some kernel memory, it can pass
> > the kernel pointer to eg. write system call as the buffer argument,
> > and then read the contents of the file.
> I guess I still don't understand. Access is s
i meant that, if userspace wants to read some kernel memory, it can pass
the kernel pointer to eg. write system call as the buffer argument,
and then read the contents of the file.
I guess I still don't understand. Access is still via file descriptor.
You could certainly clobber kernel memor
I try the test on simulator, and all cases pass without exception, maybe
you can try the simulator in your environment to ensure your modification
don't affect the system.
On Mon, Feb 24, 2020 at 7:31 PM Oleg Evseev wrote:
> Hi Xiang,
>
> I've checked https://github.com/apache/incubator-nuttx/pu
David, patch is here:
https://github.com/apache/incubator-nuttx-apps/pull/95
Thanks
Xiang
On Tue, Feb 25, 2020 at 8:26 PM David Sidrane wrote:
>
> Hi Takashi,
>
> Thanks for looking at this.
>
> Yes. Linux
>
> To test it should I revert the revert and then apply the commit or is there
> a PR I s
Hi Takashi,
Thanks for looking at this.
Yes. Linux
To test it should I revert the revert and then apply the commit or is there
a PR I should test?
David
-Original Message-
From: Takashi Yamamoto [mailto:yamam...@midokura.com.INVALID]
Sent: Monday, February 24, 2020 10:46 PM
To: dev@nut
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