** Changed in: libxslt (Ubuntu)
Importance: Undecided => Medium
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Title:
ELF programs with R_386_RELATIVE blocks are badly mapped into memory
> I'll try to find out what my VM actually is, beyond "openstack".
KVM 2.0.0+dfsg-2ubuntu1.11
The processor (per attached files above) is "Intel Xeon E312xx (Sandy
Bridge)".
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https://bug
hi Colin,
I first met on a 3.19.0-20 build:
Linux samba-build-i386-32bit 3.19.0-20-generic #20-Ubuntu SMP Fri May 29
10:06:53 UTC 2015 i686 i686 i686 GNU/Linux
and as far as I can tell (taking into account Joseph's 3.16 and upstream
4.2rc3), that a87938b/b51621a commit is neither the cure or cul
Commit a87938b2e was included in 3.19.0-20.20 (see commit
b51621abbcb4694b8d2842ce3a66006a60bba6e5), so perhaps trying this would
be the first step to see if that commit fixes things. As it stands,
I've checked the heap and stack on a VM image using this kernel and
there is now plenty of space for
Thanks Joseph!
It's no better with 3.16.0-44-generic #59~lp1471029. Perhaps even slightly
worse -- in my sample of 2 I've seen the heap at b8d- and b94-, while I think
stock Vivid 3.19 was most often in the b7's.
$ uname -a
Linux samba-build-i386-4-32bit 3.16.0-44-generic #59~lp1471029 SMP Wed
I uploaded i386 version of the .deb files. They can be downloaded from:
http://kernel.ubuntu.com/~jsalisbury/lp1471029/
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Title:
ELF programs wi
hi Joseph
Those packages don't want to install on the i386:
dpkg: error processing archive
linux-tools-3.16.0-44-generic_3.16.0-44.59~lp1471029_amd64.deb (--install):
package architecture (amd64) does not match system (i386)
(In compiling the 4.2 upstream kernel for i386, I ended up usi
I build a Utopic test kernel with a revert of commit a87938b2e. Can you
test this kernel and see if it resolves this bug. I can also built test
kernels for the other Ubuntu releases if this first test kernel does in
fact resolve the bug.
The test kernel can be downloaded from:
http://kernel.ubunt
** Tags added: kernel-bug-fixed-upstream kernel-da-key
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Title:
ELF programs with R_386_RELATIVE blocks are badly mapped into memory
To manage no
** Changed in: linux (Ubuntu)
Importance: Undecided => Medium
** Changed in: linux (Ubuntu)
Status: Incomplete => Triaged
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Title:
ELF
apport information
** Tags added: apport-collected ec2-images vivid
** Description changed:
Running the Samba autobuild tests on a 15.04 openstack image results in
a segfault in this command:
/usr/bin/xsltproc --nonet -o default/docs-xml/manpages/smb.conf.5
/home/ubuntu/autobuild/b222
So, it isn't the ld-linux.so, it is the kernel on 32 bit i386, where
exec is loading PIE elf binaries in such a way that the heap and the
stack are next to each other and have very little room. About 20% of
/usr/bin/* (and others, like /bin/systemd) on the vivid cloud image is
affected, though in m
Bug is fixed in upstream kernel 4.2.0 rc3, with the heap getting roughly
800Mb to use and the stack 135.
80085000-8008a000 r-xp fd:01 58216 /usr/bin/xsltproc
8008a000-8008b000 r--p 4000 fd:01 58216 /usr/bin/xsltproc
8008b000-8008c000 rw-p 5000 fd:01 58216 /usr/bin/x
It seems like a kernel thing. brk is returning bad addresses. Below,
tail is an unaffected process, and xsltproc is affected. brk should be
returning a 7 digit hex address, like it does for tail.
$ head -2 *.strace
==> tail.strace <==
execve("/usr/bin/tail", ["tail", "xsltproc.strace"], [/* 33 var
Let's keep a task for xlstproc to track it.
** Also affects: libxslt (Ubuntu)
Importance: Undecided
Status: New
** Changed in: libxslt (Ubuntu)
Status: New => Triaged
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h
I wrote:
> For example, look at /bin/systemd, which has R_386_RELATIVE blocks
> [demonstrates brokenness]
Another way to look at it seems to be that the properly mapped programs
have R_386_COPY blocks.
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