Continuing to debug on QEMU it seems there is an incompatibility with
the images and the peloader (which overrides the normal efi loader):
Thread 1 hit Breakpoint 3.2, grub_load_normal_mode () at
../../../grub-core/kern/main.c:241
241 in ../../../grub-core/kern/main.c
(grub gdb) hbreak do_load_image
Hardware assisted breakpoint 4 at 0x23bdf0e00: do_load_image. (2 locations)
(grub gdb) c
Continuing.
add symbol table from file "bli.module" at
.text_addr = 0x23ba772e0
.bss_addr = 0x0
.module_license_addr = 0x23ba7764a
.data_addr = 0x0
.rodata.str1.1_addr = 0x23ba77560
.rodata_addr = 0x23ba77550
add symbol table from file "xen_boot.module" at
.text_addr = 0x23bcef3c0
.bss_addr = 0x23bcf0370
.module_license_addr = 0x23bcf035e
.data_addr = 0x0
.rodata.str1.1_addr = 0x23bcefff8
Thread 1 hit Breakpoint 4.1, do_load_image (boot_policy=0 '\000',
parent_image_handle=0x23e889f18, file_path=0x237d1bce0,
source_buffer=0x239f00000, source_size=1081352,
image_handle=0x4766c498) at ../../../grub-core/loader/efi/peimage.c:745
warning: 745 ../../../grub-core/loader/efi/peimage.c: No such file or
directory
(grub gdb) hbreak grub_error
Hardware assisted breakpoint 5 at 0x6db0: grub_error. (2 locations)
(grub gdb) c
Continuing.
Thread 1 hit Breakpoint 4.2, 0x000000023bdf0e4c in do_load_image
(boot_policy=<optimized out>, parent_image_handle=<optimized out>,
image_handle=<optimized out>,
source_size=<optimized out>, source_buffer=<optimized out>,
file_path=<optimized out>) at ../../../grub-core/loader/efi/peimage.c:751
751 in ../../../grub-core/loader/efi/peimage.c
(grub gdb) c
Continuing.
Thread 1 hit Breakpoint 5.2, grub_error (n=GRUB_ERR_BAD_OS, fmt=0x23bdf1703
"section inside header") at ../../../grub-core/kern/err.c:41
warning: 41 ../../../grub-core/kern/err.c: No such file or directory
(grub gdb) bt
#0 grub_error (n=GRUB_ERR_BAD_OS, fmt=0x23bdf1703 "section inside header")
at ../../../grub-core/kern/err.c:41
#1 0x000000023bdf0e34 in do_load_image (boot_policy=<optimized out>,
parent_image_handle=<optimized out>, file_path=<optimized out>,
source_buffer=<optimized out>,
source_size=<optimized out>, image_handle=<optimized out>) at
../../../grub-core/loader/efi/peimage.c:747
#2 0x000000023bedabdc in grub_arch_efi_linux_boot_image (addr=9561964544,
size=1081352,
args=0x23bbb8b00 "placeholder dom0_mem=4G,max:4G loglvl=all
guest_loglvl=all no-real-mode edd=off") at
../../../grub-core/loader/efi/linux.c:210
#3 0x000000023bff41bc in grub_loader_boot () at
../../../grub-core/commands/boot.c:211
#4 grub_loader_boot () at ../../../grub-core/commands/boot.c:190
#5 0x000000023bf42158 in grub_command_execute (name=0x23bf4e72c "boot",
argc=0, argv=0x0 <_start>) at ../../../include/grub/command.h:126
#6 grub_menu_execute_entry (entry=entry@entry=0x23bd17660,
auto_boot=auto_boot@entry=0) at ../../../grub-core/normal/menu.c:306
#7 0x000000023bf41e2c in show_menu (autobooted=<optimized out>,
nested=<optimized out>, menu=<optimized out>) at
../../../grub-core/normal/menu.c:925
#8 grub_show_menu (menu=menu@entry=0x23bd1a940, nested=nested@entry=1,
autoboot=autoboot@entry=0) at ../../../grub-core/normal/menu.c:940
#9 0x000000023bf408a8 in grub_normal_execute (config=<optimized out>,
nested=nested@entry=1, batch=batch@entry=0) at
../../../grub-core/normal/main.c:291
#10 0x000000023bf32260 in grub_cmd_source (cmd=<optimized out>, argc=1,
args=0x23bd1fcc8) at ../../../grub-core/commands/configfile.c:48
#11 grub_cmd_source (cmd=<optimized out>, argc=<optimized out>,
args=0x23bd1fcc8) at ../../../grub-core/commands/configfile.c:30
#12 0x000000023bf48d0c in grub_script_execute_cmdline (cmd=<optimized out>)
at ../../../grub-core/script/execute.c:1034
#13 0x000000023bf478c0 in grub_script_execute_cmd (cmd=cmd@entry=0x23bd190c8)
at ../../../grub-core/script/execute.c:819
#14 0x000000023bf4874c in grub_script_execute_cmdlist (list=<optimized out>)
at ../../../grub-core/script/execute.c:1079
#15 0x000000023bf478c0 in grub_script_execute_cmd (cmd=<optimized out>) at
../../../grub-core/script/execute.c:819
#16 0x000000023bf489b4 in grub_script_execute (script=<optimized out>) at
../../../grub-core/script/execute.c:1191
#17 0x000000023bf497fc in grub_normal_parse_line (line=line@entry=0x23bd20060
"configfile $prefix/grub.cfg", getline=getline@entry=0x23bf40430
<read_config_file_getline>,
getline_data=getline_data@entry=0x23bd20380) at
../../../grub-core/script/main.c:36
#18 0x000000023bf409a0 in read_config_file (config=0x23bd20780
"(hd0,gpt1)/EFI/debian/grub.cfg") at ../../../grub-core/normal/main.c:179
#19 grub_normal_execute (config=config@entry=0x23bd20780
"(hd0,gpt1)/EFI/debian/grub.cfg", nested=nested@entry=0, batch=batch@entry=0)
at ../../../grub-core/normal/main.c:277
#20 0x000000023bf40ca4 in grub_enter_normal_mode
(config=config@entry=0x23bd20780 "(hd0,gpt1)/EFI/debian/grub.cfg") at
../../../grub-core/normal/main.c:304
#21 0x000000023bf40da0 in grub_try_normal_prefix (prefix=0x23bd209a0
"(hd0,gpt1)/EFI/debian") at ../../../grub-core/normal/main.c:356
#22 0x000000023bf40ea0 in grub_try_normal (variable=0x23bf4e492 "fw_path") at
../../../grub-core/normal/main.c:407
#23 grub_cmd_normal (cmd=<optimized out>, argc=0, argv=<optimized out>) at
../../../grub-core/normal/main.c:421
#24 grub_cmd_normal (cmd=<optimized out>, argc=<optimized out>,
argv=<optimized out>) at ../../../grub-core/normal/main.c:412
#25 0x000000023c018fb8 in grub_command_execute (name=0x23c01ec6e ")", argc=0,
argv=0x0 <_start>) at ../../../include/grub/command.h:126
#26 grub_load_normal_mode () at ../../../grub-core/kern/main.c:247
#27 grub_main () at ../../../grub-core/kern/main.c:339
#28 0x000000023c5c02c8 in ?? ()
#29 0x000000023c62a000 in ?? ()
#30 0xafafafaf6c617470 in ?? ()
Backtrace stopped: previous frame identical to this frame (corrupt stack?)
Is it possible to override the peloader or does the Xen image need to be
prepared a certain way?
--
Alex Bennée
Virtualisation Tech Lead @ Linaro
