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powerpc: update kdumpctl to load kernel signing key for fadump 

On secure boot enabled systems with static keys, kexec with kexec_file_load(-s)
fails as "Permission Denied" when fadump is enabled.

Similar to kdump, load kernel signing key for fadump as well.

Reported-by: Sachin P Bappalige <sachinpb@linux.vnet.ibm.com>
Signed-off-by: Nayna Jain <nayna@linux.ibm.com>
This commit is contained in:
Nayna Jain 2023-10-03 23:41:47 -04:00 committed by Coiby Xu
parent fe6eb30e67
commit 4fa17b2ee4
3 changed files with 15 additions and 13 deletions
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5
dracut-early-kdump.sh
View File

@ -45,11 +45,6 @@ early_kdump_load()
EARLY_KEXEC_ARGS=$(prepare_kexec_args "${KEXEC_ARGS}")
if is_secure_boot_enforced; then
dinfo "Secure Boot is enabled. Using kexec file based syscall."
EARLY_KEXEC_ARGS="$EARLY_KEXEC_ARGS -s"
fi
# Here, only output the messages, but do not save these messages
# to a file because the target disk may not be mounted yet, the
# earlykdump is too early.

9
kdump-lib.sh
View File

@ -501,6 +501,15 @@ prepare_kexec_args()
fi
fi
fi
# For secureboot enabled machines, use new kexec file based syscall.
# Old syscall will always fail as it does not have capability to do
# kernel signature verification.
if is_secure_boot_enforced; then
dinfo "Secure Boot is enabled. Using kexec file based syscall."
kexec_args="$kexec_args -s"
fi
echo "$kexec_args"
}

14
kdumpctl
View File

@ -690,14 +690,6 @@ load_kdump()
KEXEC_ARGS=$(prepare_kexec_args "${KEXEC_ARGS}")
KDUMP_COMMANDLINE=$(prepare_cmdline "${KDUMP_COMMANDLINE}" "${KDUMP_COMMANDLINE_REMOVE}" "${KDUMP_COMMANDLINE_APPEND}")
# For secureboot enabled machines, use new kexec file based syscall.
# Old syscall will always fail as it does not have capability to
# to kernel signature verification.
if is_secure_boot_enforced; then
dinfo "Secure Boot is enabled. Using kexec file based syscall."
KEXEC_ARGS="$KEXEC_ARGS -s"
load_kdump_kernel_key
fi
if is_uki "$KDUMP_KERNEL"; then
uki=$KDUMP_KERNEL
@ -984,6 +976,12 @@ start_fadump()
start_dump()
{
# On secure boot enabled Power systems, load kernel signing key on .ima for signature
# verification using kexec file based syscall.
if [[ "$(uname -m)" == ppc64le ]] && is_secure_boot_enforced; then
load_kdump_kernel_key
fi
if [[ $DEFAULT_DUMP_MODE == "fadump" ]]; then
start_fadump
else