Hi Nikolay, On 19/08/2015:02:10:21 PM, Nikolay Borisov wrote: > Hi, > > On 08/19/2015 12:02 PM, Baoquan He wrote: > > On 08/19/15 at 09:21am, Nikolay Borisov wrote: > >> Hello, > >> > >> I've recently noticed that when creating crashdumps the dmesg is not > >> being saved. The error reported is this: "Missing the struct log size > >> export". I've tested with both kernel 4.1.1 and 3.12.28. My version of > >> kexec tools is : kexec-tools 2.0.9 released 04 June 2015. The kernel has Are you sure if you have 2.0.9. I see 2.0.9 is dated 09 Feb 2015. commit 8e762175d295aad08a1cc62d6394e8285f225a40 Author: Simon Horman <horms at verge.net.au> Date: Mon Feb 9 14:33:24 2015 +0900 kexec-tools 2.0.9 > >> been compiled with debugging info so the respective symbol should be > >> exported but apparently it is not. Any ideas how to debug that? Can you please cross check that you have following patch in your kexec-tool. If you have that patch, then its really strange that you see this issue. commit c96b723e17eb4af689de494b636d8bded4b98c88 Author: Vivek Goyal <vgoyal at redhat.com> Date: Thu May 22 10:43:14 2014 -0400 vmcore-dmesg: Handle struct log to struct printk_log renaming ~Pratyush