Re: [Crash-utility] crash: page excluded: kernel virtual address: ffffffff81e3da50 type: "page_offset_base"
----- Original Message -----
Hi Dave,
Information update: I think I found the root cause.
During the test in last week, I always use makedumpfile, use
/etc/kdump.conf as-is:
core_collector makedumpfile -l --message-level 1 -d 31
And now I am suggested to dump without makedumpfile by using:
core_collector cp
I get big vmcore file of 3.5G, but crash 7.2.0++ can deal with it
without any error, whether with or without "nokaslr" kernel parameter.
So it seems makedumpfile has problem, and if it does is, I am curious
about that there is no other people report this kind of issue, because
it seems easy to reproduce.
--
Sincerely,
Cao jin
Issues with makedumpfile are typically discussed on the upstream kexec mailing list:
http://lists.infradead.org/mailman/listinfo/kexec
The makedumpfile command has a "LATEST_VERSION" that it supports in its
makedumpfile.h
file. In Fedora package kexec-tools-2.0.16-1.fc28, it is this:
#define LATEST_VERSION KERNEL_VERSION(4, 11, 7)/* linux-4.11.7 */
So it is not surprising that running it on a 4.14 kernel does not work as hoped.
Dave