Description of problem: Happened on kvm guest: [root@* tmp]# ./makedumpfile -l --message-level 31 -d 31 vmcore vmcore.1 sadump: does not have partition header sadump: read dump device as unknown format sadump: unknown format LOAD (0) phys_start : 1400000 phys_end : 1ff5000 virt_start : ffffffff81000000 virt_end : ffffffff81bf5000 LOAD (1) phys_start : 1000 phys_end : a0000 virt_start : ffff880000001000 virt_end : ffff8800000a0000 LOAD (2) phys_start : 100000 phys_end : 17000000 virt_start : ffff880000100000 virt_end : ffff880017000000 LOAD (3) phys_start : 21000000 phys_end : 23e68018 virt_start : ffff880021000000 virt_end : ffff880023e68018 LOAD (4) phys_start : 23e68018 phys_end : 23ea7058 virt_start : ffff880023e68018 virt_end : ffff880023ea7058 LOAD (5) phys_start : 23ea7058 phys_end : 23ea8018 virt_start : ffff880023ea7058 virt_end : ffff880023ea8018 LOAD (6) phys_start : 23ea8018 phys_end : 23eb1858 virt_start : ffff880023ea8018 virt_end : ffff880023eb1858 LOAD (7) phys_start : 23eb1858 phys_end : 24262000 virt_start : ffff880023eb1858 virt_end : ffff880024262000 LOAD (8) phys_start : 24263000 phys_end : 243b1000 virt_start : ffff880024263000 virt_end : ffff8800243b1000 LOAD (9) phys_start : 243b3000 phys_end : 245e2000 virt_start : ffff8800243b3000 virt_end : ffff8800245e2000 LOAD (10) phys_start : 24634000 phys_end : 256b4000 virt_start : ffff880024634000 virt_end : ffff8800256b4000 LOAD (11) phys_start : 25718000 phys_end : 257e0000 virt_start : ffff880025718000 virt_end : ffff8800257e0000 Linux kdump page_size : 4096 max_mapnr : 257e0 There is enough free memory to be done in one cycle. Buffer size for the cyclic mode: 38392 The kernel version is not supported. The makedumpfile operation may be incomplete. num of NODEs : 1 Memory type : SPARSEMEM_EX mem_map (0) mem_map : ffff880024255000 pfn_start : 0 pfn_end : 8000 mem_map (1) mem_map : 0 pfn_start : 8000 pfn_end : 10000 mem_map (2) mem_map : 0 pfn_start : 10000 pfn_end : 18000 mem_map (3) mem_map : 0 pfn_start : 18000 pfn_end : 20000 mem_map (4) mem_map : 0 pfn_start : 20000 pfn_end : 257e0 mmap() is available on the kernel. Checking for memory holes : [ 0.0 %] / Checking for memory holes : [100.0 %] | STEP [Checking for memory holes ] : 0.000314 seconds __vtop4_x86_64: Can't get a valid pte. readmem: Can't convert a virtual address(ffff880024262000) to physical address. readmem: type_addr: 0, addr:ffff880024262000, size:32768 __exclude_unnecessary_pages: Can't read the buffer of struct page. create_2nd_bitmap: Can't exclude unnecessary pages. makedumpfile Failed. Version-Release number of selected component (if applicable): How reproducible: Steps to Reproduce: 1. 2. 3. Actual results: Expected results: Additional info:
Created attachment 1395674 [details] makedumpfile -l --message-level 31 -d 31 I'm unable to capture a vmcore in F27 in a physical machine. My versions are: kernel-4.14.13-300.fc27.x86_64 kexec-tools-2.0.15-12.fc27.1.x86_64
This bug appears to have been reported against 'rawhide' during the Fedora 28 development cycle. Changing version to '28'.
kexec-tools-2.0.17-2.fc28 has been submitted as an update to Fedora 28. https://bodhi.fedoraproject.org/updates/FEDORA-2018-e0cc897425
kexec-tools-2.0.17-2.fc28 has been pushed to the Fedora 28 testing repository. If problems still persist, please make note of it in this bug report. See https://fedoraproject.org/wiki/QA:Updates_Testing for instructions on how to install test updates. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2018-e0cc897425
kexec-tools-2.0.17-2.fc28 has been pushed to the Fedora 28 stable repository. If problems still persist, please make note of it in this bug report.