[CRIU] sometimes we get coredump on zombie00

[Cyrill Gorcunov]

Hi guys,

it seems we sometimes are getting core-dump for various
tests, which are hard to repeat. Meanwhile I've got one
and here is an output

[root at neptune static]# gdb ../../../../crtools ./core.16438 
Reading symbols from /home/crtools/crtools...done.

warning: core file may not match specified executable file.
[New Thread 16438]
Reading symbols from /lib64/ld-linux-x86-64.so.2...(no debugging symbols found)...done.
Loaded symbols for /lib64/ld-linux-x86-64.so.2
Core was generated by `./zombie00 --pidfile zombie00.pid --outfile zombie00.out'.
Program terminated with signal 11, Segmentation fault.
#0  0x0000000000401088 in ?? ()
Missing separate debuginfos, use: debuginfo-install glibc-2.12-1.25.el6.x86_64
(gdb) bt 
#0  0x0000000000401088 in ?? ()
#1  0x0000000100004033 in ?? ()
#2  0x0000403400000000 in ?? ()
#3  0x0000000300000001 in ?? ()
#4  0x0000000000004035 in ?? ()
#5  0x0000000000000009 in ?? ()
#6  0x0000000b00000000 in ?? ()
#7  0x000000383b40fb68 in ?? ()
#8  0x0000000000402100 in write_img_buf (fd=Cannot access memory at address 0xffffffffffffffef) at ./include/util.h:132
Backtrace stopped: previous frame inner to this frame (corrupt stack?)
(gdb) 

investigating...

	Cyrill