[yocto] rpmdeps buffer overflow

[Marc Ferland]

On Fri, Aug 10, 2018 at 11:01 AM, Alexander Kanavin
<alex.kanavin at gmail.com> wrote:
> 2018-08-10 16:50 GMT+02:00 Marc Ferland <marc.ferland at gmail.com>:
>> | Processing files: pylon-5.0.12-r0.aarch64
>> | *** buffer overflow detected ***:
>> /home/vagrant/build/tmp/work/aarch64-poky-linux/pylon/5.0.12-r0/recipe-sysroot-native/usr/bin/rpmbuild
>> terminated
>> | Aborted (core dumped)
>
> This is not a yocto issue, but a rpm issue. You need to deal with it
> the hard way I'm afraid: inspect the core dump with gdb, and take the
> result to rpm upstream.
>

Looking at the backtrace of rpmbuild in gdb I see that libmagic is the culprit:

*** buffer overflow detected ***:
/home/vagrant/build/tmp/work/aarch64-poky-linux/pylon/5.0.12-r0/recipe-sysroot-native/usr/bin/rpmbuild
terminated

Program received signal SIGABRT, Aborted.
0x00007ffff6f6f66a in raise () from
/home/vagrant/build/tmp/sysroots-uninative/x86_64-linux/lib/libc.so.6
(gdb) bt
#0  0x00007ffff6f6f66a in raise () from
/home/vagrant/build/tmp/sysroots-uninative/x86_64-linux/lib/libc.so.6
#1  0x00007ffff6f70741 in abort () from
/home/vagrant/build/tmp/sysroots-uninative/x86_64-linux/lib/libc.so.6
#2  0x00007ffff6fb0a07 in ?? () from
/home/vagrant/build/tmp/sysroots-uninative/x86_64-linux/lib/libc.so.6
#3  0x00007ffff703dcde in ?? () from
/home/vagrant/build/tmp/sysroots-uninative/x86_64-linux/lib/libc.so.6
#4  0x00007ffff703dd11 in __fortify_fail () from
/home/vagrant/build/tmp/sysroots-uninative/x86_64-linux/lib/libc.so.6
#5  0x00007ffff703bdc0 in __chk_fail () from
/home/vagrant/build/tmp/sysroots-uninative/x86_64-linux/lib/libc.so.6
#6  0x00007ffff6d1e0b1 in ?? ()
   from /home/vagrant/build/tmp/work/aarch64-poky-linux/pylon/5.0.12-r0/recipe-sysroot-native/usr/bin/../lib/./libmagic.so.1
#7  0x00007ffff6d1f105 in ?? ()
   from /home/vagrant/build/tmp/work/aarch64-poky-linux/pylon/5.0.12-r0/recipe-sysroot-native/usr/bin/../lib/./libmagic.so.1
#8  0x00007ffff6d2a888 in ?? ()
   from /home/vagrant/build/tmp/work/aarch64-poky-linux/pylon/5.0.12-r0/recipe-sysroot-native/usr/bin/../lib/./libmagic.so.1
#9  0x00007ffff6d2c782 in ?? ()
   from /home/vagrant/build/tmp/work/aarch64-poky-linux/pylon/5.0.12-r0/recipe-sysroot-native/usr/bin/../lib/./libmagic.so.1
#10 0x00007ffff6d1fc43 in ?? ()
   from /home/vagrant/build/tmp/work/aarch64-poky-linux/pylon/5.0.12-r0/recipe-sysroot-native/usr/bin/../lib/./libmagic.so.1
#11 0x00007ffff7bca16d in rpmfcClassify ()
   from /home/vagrant/build/tmp/work/aarch64-poky-linux/pylon/5.0.12-r0/recipe-sysroot-native/usr/bin/../lib/librpmbuild.so.7
#12 0x00007ffff7bcab26 in ?? ()
   from /home/vagrant/build/tmp/work/aarch64-poky-linux/pylon/5.0.12-r0/recipe-sysroot-native/usr/bin/../lib/librpmbuild.so.7
#13 0x00007ffff7bbc671 in ?? ()
   from /home/vagrant/build/tmp/work/aarch64-poky-linux/pylon/5.0.12-r0/recipe-sysroot-native/usr/bin/../lib/librpmbuild.so.7
#14 0x00007ffff7bb8113 in ?? ()
   from /home/vagrant/build/tmp/work/aarch64-poky-linux/pylon/5.0.12-r0/recipe-sysroot-native/usr/bin/../lib/librpmbuild.so.7
#15 0x0000555555557abf in ?? ()
#16 0x0000555555557c5b in ?? ()

I did a quick test and bumped the file recipe (was 5.31 on rocko
branch) to 5.34 and the problem went away, no more buffer overflows
and now my recipe builds correctly.

Marc