Hi, On 8/5/19 9:32 PM, Borislav Petkov wrote:
On Mon, Aug 05, 2019 at 03:02:21PM +0200, Borislav Petkov wrote:On Mon, Aug 05, 2019 at 07:49:54PM +0800, Chen, Rong A wrote:We use the following command to boot a new kernel: kexec --noefi -l /opt/rootfs/tmp/pkg/linux/x86_64-rhel-7.6/gcc-7/5b51ae969e3d8ab0134ee3c98a769ad6d2cc2e24/vmlinuz-5.2.0-rc3-00004-g5b51ae969e3d8a --initrd=/opt/rootfs/tmp/initrd-concatenatedAnd this "concatenated" initrd, how do you generate that?And the "-l" thing is just the kexec load command to load the second kernel. I need you to give me a step-by-step, exact command-by-command list of things you do to trigger. Also, pls send me dmesg from the first kernel. Privately is fine too. Thx.
Sorry for the delay, I've found a machine which can reproduce the issue at last.
root@lkp-bdw-de1 ~# kexec --version kexec-tools 2.0.14 kexec reboots the system without "-e option"root@lkp-bdw-de1 ~# kexec --noefi vmlinuz-5.2.0-rc3-00004-g5b51ae969e3d8a --initrd final_initrd-borrow --reuse-cmdline Unknown type (Reserved) while parsing /sys/firmware/memmap/7/type. Please report this as bug. Using RANGE_RESERVED now. Unknown type (Reserved) while parsing /sys/firmware/memmap/13/type. Please report this as bug. Using RANGE_RESERVED now. Unknown type (Reserved) while parsing /sys/firmware/memmap/11/type. Please report this as bug. Using RANGE_RESERVED now. Unknown type (Reserved) while parsing /sys/firmware/memmap/1/type. Please report this as bug. Using RANGE_RESERVED now. Unknown type (Reserved) while parsing /sys/firmware/memmap/4/type. Please report this as bug. Using RANGE_RESERVED now. Unknown type (Reserved) while parsing /sys/firmware/memmap/12/type. Please report this as bug. Using RANGE_RESERVED now. Unknown type (Reserved) while parsing /sys/firmware/memmap/2/type. Please report this as bug. Using RANGE_RESERVED now. Unknown type (Reserved) while parsing /sys/firmware/memmap/9/type. Please report this as bug. Using RANGE_RESERVED now.
Connection to lkp-bdw-de1 closed by remote host. Connection to lkp-bdw-de1 closed. The behavior is as usual if using "nokaslr"root@lkp-bdw-de1 ~# kexec -l vmlinuz-5.2.0-rc3-00004-g5b51ae969e3d8a --initrd final_initrd-borrow --reuse-cmdline --append "nokaslr" Unknown type (Reserved) while parsing /sys/firmware/memmap/7/type. Please report this as bug. Using RANGE_RESERVED now. Unknown type (Reserved) while parsing /sys/firmware/memmap/13/type. Please report this as bug. Using RANGE_RESERVED now. Unknown type (Reserved) while parsing /sys/firmware/memmap/11/type. Please report this as bug. Using RANGE_RESERVED now. Unknown type (Reserved) while parsing /sys/firmware/memmap/1/type. Please report this as bug. Using RANGE_RESERVED now. Unknown type (Reserved) while parsing /sys/firmware/memmap/4/type. Please report this as bug. Using RANGE_RESERVED now. Unknown type (Reserved) while parsing /sys/firmware/memmap/12/type. Please report this as bug. Using RANGE_RESERVED now. Unknown type (Reserved) while parsing /sys/firmware/memmap/2/type. Please report this as bug. Using RANGE_RESERVED now. Unknown type (Reserved) while parsing /sys/firmware/memmap/9/type. Please report this as bug. Using RANGE_RESERVED now.
root@lkp-bdw-de1 ~# kexec -e And please find the pre-dmesg in the attachment. Best Regards, Rong Chen
Attachment:
pre-dmesg.gz
Description: application/gzip
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