[Crash-utility] vmss.core and kernel dbgsym do not match!

Hi, In reference to bug : https://bugzilla.redhat.com/show_bug.cgi?id=233151 I have the same problem trying to analyze a vmss.core file with kernel v4.4.0-36-generic (Ubuntu) : crash: /usr/lib/debug/boot/*vmlinux-4.4.0-36-generic* and /var/vmss_m.core do not match! I also tried with the following (as recommended in the bug threads) without success : --machdep phys_base=0x200000 I'm using the right -dbgsym for the right kernel as confirmed here : $ strings vmss_m.core | grep "Linux version" Linux version *4.4.0-36-generic* (buildd@lgw01-20) (gcc version 4.8.4 (Ubuntu 4.8.4-2ubuntu1~14.04.3) ) #55~14.04.1-Ubuntu SMP Fri Aug 12 11:49:30 UTC 2016 (Ubuntu 4.4.0-36.55~14.04.1-generic 4.4.16) $ readelf -a vmss_m.core Program Headers: Type Offset VirtAddr PhysAddr FileSiz MemSiz Flags Align NOTE 0x00000000000000e8 0x0000000000000000 0x0000000000000000 0x0000000000000218 0x0000000000000000 0 LOAD 0x0000000080001000 0x00000000fff80000 0x00000000fff80000 0x0000000000080000 0x0000000000080000 RWE 1000 LOAD 0x0000000000001000 0x0000000000000000 0x0000000000000000 0x0000000080000000 0x0000000080000000 RWE 1000 The VirtAddr and PhysAddr are just zero. I tried with the latest and greatest crash-utility from [https://github.com/crash-utility/crash.git] using version 7.1.5++ but this has no effect, I still have the error : crash: /usr/lib/debug/boot/*vmlinux-4.4.0-36-generic* and /var/vmss_m.core do not match! Any ideas ? - Eric