On 06/19/2012 11:07 PM, Robert Yang wrote:
Thanks Mark, the rpm.real also has the same problem when the length of
tmpdir
is 210, it seems that this is because of the glibc.
And also other problems found:
When use PACKAGE_CLASSES = "package_deb", and the length of tmpdir is 177,
the error is:
/too/long/path/totmp/sysroots/x86_64-linux/usr/bin/dpkg-scanpackages:
bad interpreter: No such file or directory
The interpreter is perl, and it does exist, it seems that we should limit
the length of tmpdir to a smaller value then 177 rather than fix these
strange
problems. I will go on working on it.
Robert,
A path length of 175 or short is not ideal, we should file bugs against
these issues. We should also add the sanity check you suggested as a
WARNING for lenghts over 175. That should not be the final solution
though, we need to address the issues and get them fixed up stream.
The groupadd one sounds like it might be a buffer overflow issue which
could have larger ramifications
Thanks
Sau!
// Robert
On 06/19/2012 01:47 AM, Mark Hatle wrote:
We're not away of any size limitations within pseudo, other then
PATH_MAX which
is typically 4096...
--Mark
On 6/18/12 4:17 AM, Robert Yang wrote:
Hi Experts:
I've met a strange issue, when set the length of builddir to
266 (Why I did this is that I need to know how long the tmpdir
that oe-core can support):
NOTE: package dbus-1.4.20-r3.0: task do_install: Started
*** glibc detected *** groupadd: malloc(): memory corruption:
0x000000000101da70 ***
*** glibc detected *** groupadd: malloc(): memory corruption:
0x000000000101da70 ***
Then the build would hang, this is caused by the command:
PSEUDO_PREFIX=/too/long/path/tmp/sysroots/x86_64-linux/usr
PSEUDO_LOCALSTATEDIR=... PSEUDO_PASSWD=...
PSEUDO_NOSYMLINKEXP=1 PSEUDO_DISABLED=0 PSEUDO_LOCALSTATEDIR
... /too/long/path/to/tmp/sysroots/x86_64-linux/usr/bin/pseudo
groupadd --root /too/long/path/to/tmp/sysroots/qemux86 -r netdev -f
1) I had looked into the code of groupadd, and found that this would
happen when it used the glibc function which needs malloc(for example,
the access()), so it seemed this was caused by the glibc or pseudo,
but I didn't know why it only happened to groupadd/useradd.
2) I had tried not to use pseudo, it worked well:
sudo groupadd --root /too/long/path/to/tmp/sysroots/qemux86 -r netdev -f
From this, it seemed that the glibc was ok
3) I had tried to write a small piece of code which used the
access(), and
used pseudo to run it, it worked well:
/too/long/path/for/pseudo/settings/and/then/run/pseudo my_app
From this, it seemed that both pseudo and glibc were OK.
These 3 steps make me puzzle, maybe we can think that the tmpdir can not
be too long, and limit it to a proper length, please see this:
http://lists.linuxtogo.org/pipermail/openembedded-core/2012-May/022112.html
BTW. the "argument list too long" error has been fixed.
Any suggestion is appreciated.
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