Thanks for taking the time to report this bug and helping to make Ubuntu better. We appreciate the difficulties you are facing, but this appears to be a "regular" (non-security) bug. I have unmarked it as a security issue since this bug does not show evidence of allowing attackers to cross privilege boundaries nor directly cause loss of data/privacy. Please feel free to report any other bugs you may find.
** Information type changed from Public Security to Public -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1869465 Title: Kdump-Tools: Makedumpfile Failed, Falling Back To 'Cp' Status in linux package in Ubuntu: Confirmed Bug description: When testing kdump on Ubuntu 18.04.4 (arm64) GA kernel, makedumpfile fails. The test steps are as follows: # echo 1> / proc / sys / kernel / sysrq # echo c> / proc / sysrq-trigger The logs are as follows: kdump-tools[646]: starting kdump-tools: * running makedumpfile -c -d 31 /proc/vmcore /var/crash/202003251128/dump-incomplete kdump-tools[646]: readpage_elf: Attempt to read non-existent page at 0x0 kdump-tools[646]: readmem: type_addr: 1, addr:ff0, size:8 kdump-tools[646]: vaddr_to_paddr_arm64: Can't read pud kdump-tools[646]: readmem: Can't convert a virtual address(ffff9e653690) to physical address. kdump-tools[646]: readmem: type_addr: 0, addr:ffff9e653690, size:1032 kdump-tools[646]: validate_mem_section: Can't read mem_section array. kdump-tools[646]: get_mem_section: Could not validate mem_section. kdump-tools[646]: get_mm_sparsemem: Can't get the address of mem_section. kdump-tools[646]: makedumpfile Failed. kdump-tools[646]: * kdump-tools: makedumpfile failed, falling back to 'cp' But when I use the HWE kernel, I find that there is no such problem. The HEW kernel version: 5.3.0-42-generic To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1869465/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
