Bug#1069844: More debug info

Alex Bennée alex.bennee at linaro.org
Thu Apr 25 18:30:52 BST 2024


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 at entry=0x23bd17660, auto_boot=auto_boot at 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 at entry=0x23bd1a940, nested=nested at entry=1, autoboot=autoboot at entry=0) at ../../../grub-core/normal/menu.c:940
  #9  0x000000023bf408a8 in grub_normal_execute (config=<optimized out>, nested=nested at entry=1, batch=batch at 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 at 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 at entry=0x23bd20060 "configfile $prefix/grub.cfg", getline=getline at entry=0x23bf40430 <read_config_file_getline>, 
      getline_data=getline_data at 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 at entry=0x23bd20780 "(hd0,gpt1)/EFI/debian/grub.cfg", nested=nested at entry=0, batch=batch at entry=0)
      at ../../../grub-core/normal/main.c:277
  #20 0x000000023bf40ca4 in grub_enter_normal_mode (config=config at 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



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