On Wed, Apr 23, 2025 at 10:44:22PM +0200, Arnaud Lefebvre wrote:
On Fri, Feb 07, 2025 at 04:08:10PM +0800, Coiby Xu wrote:
+config CRASH_DM_CRYPT
+ bool "Support saving crash dump to dm-crypt encrypted volume"
+ depends on KEXEC_FILE
+ depends on CRASH_DUMP
+ depends on DM_CRYPT
+ help
+ With this option enabled, user space can intereact with
+ /sys/kernel/config/crash_dm_crypt_keys to make the dm crypt keys
+ persistent for the dump-capture kernel.
+
Maybe also add CONFIG_CONFIGFS_FS option? Without it this series code doesn't compile:
I'll add the dependency on CONFIG_CONFIGFS_FS, thanks for your
suggestion!
Last build lines:
GEN modules.builtin
MODPOST vmlinux.symvers
UPD include/generated/utsversion.h
CC init/version-timestamp.o
KSYMS .tmp_vmlinux0.kallsyms.S
AS .tmp_vmlinux0.kallsyms.o
LD .tmp_vmlinux1
ld: vmlinux.o: in function `config_keys_make_item':
/usr/src/linux/kernel/crash_dump_dm_crypt.c:250:(.text+0x228028): undefined reference to `config_item_init_type_name'
ld: vmlinux.o: in function `configfs_dmcrypt_keys_init':
/usr/src/linux/kernel/crash_dump_dm_crypt.c:442:(.init.text+0x71e5c): undefined reference to `config_group_init'
ld: /usr/src/linux/kernel/crash_dump_dm_crypt.c:444:(.init.text+0x71e82): undefined reference to `configfs_register_subsystem'
ld: /usr/src/linux/kernel/crash_dump_dm_crypt.c:454:(.init.text+0x71ef7): undefined reference to `configfs_unregister_subsystem'
make[2]: *** [scripts/Makefile.vmlinux:77: vmlinux] Error 1
make[1]: *** [/usr/src/linux/Makefile:1226: vmlinux] Error 2
make: *** [Makefile:251: __sub-make] Error 2
--
Best regards,
Coiby
