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[Shimin <shimin@xxxxxxxxxxxxxx>]

** Attachment added: "/var/crash/_sbin_cgmanager.0.crash"
   https://bugs.launchpad.net/ubuntu/+source/lxc/+bug/1532314/+attachment/4546429/+files/crash

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https://bugs.launchpad.net/bugs/1532314

Title:
  Buffer overflow in cgmanager

Status in lxc package in Ubuntu:
  New

Bug description:
  Host: Ubuntu 15.10
  lxc: 1.1.5-0ubuntu0.15.10.3
  cgmanager: 0.39-2ubuntu2
  Container: Ubuntu 15.10

  Got the following trace in syslog. Please let me know what other
  information will be useful for troubleshooting.

  Jan  8 19:29:24 ip-10-169-249-164 cgmanager[7725]: *** buffer overflow detected ***: /sbin/cgmanager terminated
  Jan  8 19:29:24 ip-10-169-249-164 cgmanager[7725]: ======= Backtrace: =========
  Jan  8 19:29:24 ip-10-169-249-164 cgmanager[7725]: /lib/x86_64-linux-gnu/libc.so.6(+0x78c4e)[0x7f1929550c4e]
  Jan  8 19:29:24 ip-10-169-249-164 cgmanager[7725]: /lib/x86_64-linux-gnu/libc.so.6(__fortify_fail+0x5c)[0x7f19295f0e8c]
  Jan  8 19:29:24 ip-10-169-249-164 cgmanager[7725]: /lib/x86_64-linux-gnu/libc.so.6(+0x116e80)[0x7f19295eee80]
  Jan  8 19:29:24 ip-10-169-249-164 cgmanager[7725]: /lib/x86_64-linux-gnu/libc.so.6(+0x118dd7)[0x7f19295f0dd7]
  Jan  8 19:29:24 ip-10-169-249-164 cgmanager[7725]: /lib/x86_64-linux-gnu/libnih.so.1(nih_io_handle_fds+0xad)[0x7f1929d01b3d]
  Jan  8 19:29:24 ip-10-169-249-164 cgmanager[7725]: /lib/x86_64-linux-gnu/libnih.so.1(nih_main_loop+0x13f)[0x7f1929d05faf]
  Jan  8 19:29:24 ip-10-169-249-164 cgmanager[7725]: /sbin/cgmanager(+0x5145)[0x562d8fc75145]
  Jan  8 19:29:24 ip-10-169-249-164 cgmanager[7725]: /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf0)[0x7f19294f8a40]
  Jan  8 19:29:24 ip-10-169-249-164 cgmanager[7725]: /sbin/cgmanager(+0x53d9)[0x562d8fc753d9]
  Jan  8 19:29:24 ip-10-169-249-164 cgmanager[7725]: ======= Memory map: ========
  Jan  8 19:29:24 ip-10-169-249-164 cgmanager[7725]: 562d8fc70000-562d8fc92000 r-xp 00000000 ca:01 12884                      /sbin/cgmanager
  Jan  8 19:29:24 ip-10-169-249-164 cgmanager[7725]: 562d8fe92000-562d8fe94000 r--p 00022000 ca:01 12884                      /sbin/cgmanager
  Jan  8 19:29:24 ip-10-169-249-164 cgmanager[7725]: 562d8fe94000-562d8fe95000 rw-p 00024000 ca:01 12884                      /sbin/cgmanager
  Jan  8 19:29:24 ip-10-169-249-164 cgmanager[7725]: 562d915f8000-562d92030000 rw-p 00000000 00:00 0                          [heap]
  Jan  8 19:29:24 ip-10-169-249-164 cgmanager[7725]: 7f1927d44000-7f1927d5a000 r-xp 00000000 ca:01 395872                     /lib/x86_64-linux-gnu/libgcc_s.so.1
  Jan  8 19:29:24 ip-10-169-249-164 cgmanager[7725]: 7f1927d5a000-7f1927f59000 ---p 00016000 ca:01 395872                     /lib/x86_64-linux-gnu/libgcc_s.so.1
  Jan  8 19:29:24 ip-10-169-249-164 cgmanager[7725]: 7f1927f59000-7f1927f5a000 r--p 00015000 ca:01 395872                     /lib/x86_64-linux-gnu/libgcc_s.so.1
  Jan  8 19:29:24 ip-10-169-249-164 cgmanager[7725]: 7f1927f5a000-7f1927f5b000 rw-p 00016000 ca:01 395872                     /lib/x86_64-linux-gnu/libgcc_s.so.1
  Jan  8 19:29:24 ip-10-169-249-164 cgmanager[7725]: 7f1927f5b000-7f1927f67000 r-xp 00000000 ca:01 403839                     /lib/x86_64-linux-gnu/libnss_files-2.21.so
  Jan  8 19:29:24 ip-10-169-249-164 cgmanager[7725]: 7f1927f67000-7f1928166000 ---p 0000c000 ca:01 403839                     /lib/x86_64-linux-gnu/libnss_files-2.21.so
  Jan  8 19:29:24 ip-10-169-249-164 cgmanager[7725]: 7f1928166000-7f1928167000 r--p 0000b000 ca:01 403839                     /lib/x86_64-linux-gnu/libnss_files-2.21.so
  Jan  8 19:29:24 ip-10-169-249-164 cgmanager[7725]: 7f1928167000-7f1928168000 rw-p 0000c000 ca:01 403839                     /lib/x86_64-linux-gnu/libnss_files-2.21.so
  Jan  8 19:29:24 ip-10-169-249-164 cgmanager[7725]: 7f1928168000-7f1928173000 r-xp 00000000 ca:01 403823                     /lib/x86_64-linux-gnu/libnss_nis-2.21.so
  Jan  8 19:29:24 ip-10-169-249-164 cgmanager[7725]: 7f1928173000-7f1928372000 ---p 0000b000 ca:01 403823                     /lib/x86_64-linux-gnu/libnss_nis-2.21.so
  Jan  8 19:29:24 ip-10-169-249-164 cgmanager[7725]: 7f1928372000-7f1928373000 r--p 0000a000 ca:01 403823                     /lib/x86_64-linux-gnu/libnss_nis-2.21.so
  Jan  8 19:29:24 ip-10-169-249-164 cgmanager[7725]: 7f1928373000-7f1928374000 rw-p 0000b000 ca:01 403823                     /lib/x86_64-linux-gnu/libnss_nis-2.21.so
  Jan  8 19:29:24 ip-10-169-249-164 cgmanager[7725]: 7f1928374000-7f192838b000 r-xp 00000000 ca:01 403845                     /lib/x86_64-linux-gnu/libnsl-2.21.so
  Jan  8 19:29:24 ip-10-169-249-164 cgmanager[7725]: 7f192838b000-7f192858a000 ---p 00017000 ca:01 403845                     /lib/x86_64-linux-gnu/libnsl-2.21.so
  Jan  8 19:29:24 ip-10-169-249-164 cgmanager[7725]: 7f192858a000-7f192858b000 r--p 00016000 ca:01 403845                     /lib/x86_64-linux-gnu/libnsl-2.21.so
  Jan  8 19:29:24 ip-10-169-249-164 cgmanager[7725]: 7f192858b000-7f192858c000 rw-p 00017000 ca:01 403845                     /lib/x86_64-linux-gnu/libnsl-2.21.so
  Jan  8 19:29:24 ip-10-169-249-164 cgmanager[7725]: 7f192858c000-7f192858e000 rw-p 00000000 00:00 0
  Jan  8 19:29:24 ip-10-169-249-164 cgmanager[7725]: 7f192858e000-7f1928596000 r-xp 00000000 ca:01 403841                     /lib/x86_64-linux-gnu/libnss_compat-2.21.so
  Jan  8 19:29:24 ip-10-169-249-164 cgmanager[7725]: 7f1928596000-7f1928795000 ---p 00008000 ca:01 403841                     /lib/x86_64-linux-gnu/libnss_compat-2.21.so
  Jan  8 19:29:24 ip-10-169-249-164 cgmanager[7725]: 7f1928795000-7f1928796000 r--p 00007000 ca:01 403841                     /lib/x86_64-linux-gnu/libnss_compat-2.21.so
  Jan  8 19:29:24 ip-10-169-249-164 cgmanager[7725]: 7f1928796000-7f1928797000 rw-p 00008000 ca:01 403841                     /lib/x86_64-linux-gnu/libnss_compat-2.21.so
  Jan  8 19:29:24 ip-10-169-249-164 cgmanager[7725]: 7f1928797000-7f19287a9000 r-xp 00000000 ca:01 394903                     /lib/x86_64-linux-gnu/libgpg-error.so.0.15.0
  Jan  8 19:29:24 ip-10-169-249-164 cgmanager[7725]: 7f19287a9000-7f19289a8000 ---p 00012000 ca:01 394903                     /lib/x86_64-linux-gnu/libgpg-error.so.0.15.0
  Jan  8 19:29:24 ip-10-169-249-164 cgmanager[7725]: 7f19289a8000-7f19289a9000 r--p 00011000 ca:01 394903                     /lib/x86_64-linux-gnu/libgpg-error.so.0.15.0
  Jan  8 19:29:24 ip-10-169-249-164 cgmanager[7725]: 7f19289a9000-7f19289aa000 rw-p 00012000 ca:01 394903                     /lib/x86_64-linux-gnu/libgpg-error.so.0.15.0
  Jan  8 19:29:24 ip-10-169-249-164 cgmanager[7725]: 7f19289aa000-7f19289ad000 r-xp 00000000 ca:01 403830                     /lib/x86_64-linux-gnu/libdl-2.21.so
  Jan  8 19:29:24 ip-10-169-249-164 cgmanager[7725]: 7f19289ad000-7f1928bac000 ---p 00003000 ca:01 403830                     /lib/x86_64-linux-gnu/libdl-2.21.so
  Jan  8 19:29:24 ip-10-169-249-164 cgmanager[7725]: 7f1928bac000-7f1928bad000 r--p 00002000 ca:01 403830                     /lib/x86_64-linux-gnu/libdl-2.21.so
  Jan  8 19:29:24 ip-10-169-249-164 cgmanager[7725]: 7f1928bad000-7f1928bae000 rw-p 00003000 ca:01 403830                     /lib/x86_64-linux-gnu/libdl-2.21.so
  Jan  8 19:29:24 ip-10-169-249-164 cgmanager[7725]: 7f1928bae000-7f1928c86000 r-xp 00000000 ca:01 394902                     /lib/x86_64-linux-gnu/libgcrypt.so.20.0.3
  Jan  8 19:29:24 ip-10-169-249-164 cgmanager[7725]: 7f1928c86000-7f1928e86000 ---p 000d8000 ca:01 394902                     /lib/x86_64-linux-gnu/libgcrypt.so.20.0.3
  Jan  8 19:29:24 ip-10-169-249-164 cgmanager[7725]: 7f1928e86000-7f1928e87000 r--p 000d8000 ca:01 394902                     /lib/x86_64-linux-gnu/libgcrypt.so.20.0.3
  Jan  8 19:29:24 ip-10-169-249-164 cgmanager[7725]: 7f1928e87000-7f1928e90000 rw-p 000d9000 ca:01 394902                     /lib/x86_64-linux-gnu/libgcrypt.so.20.0.3
  [snip]
  Jan  8 19:29:24 ip-10-169-249-164 systemd[1]: cgmanager.service: Main process exited, code=dumped, status=6/ABRT
  Jan  8 19:29:24 ip-10-169-249-164 systemd[1]: cgmanager.service: Unit entered failed state.
  Jan  8 19:29:24 ip-10-169-249-164 systemd[1]: cgmanager.service: Failed with result 'core-dump'.

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