[bug #33162] grub2 1.99-rc2 alloc magic is broken error on booting UEFI shell the second time

[Heng Liu]

URL:
  <http://savannah.gnu.org/bugs/?33162>

                 Summary: grub2 1.99-rc2 alloc magic is broken error on
booting UEFI shell the second time
                 Project: GNU GRUB
            Submitted by: liucougar
            Submitted on: Tue 26 Apr 2011 02:26:00 AM GMT
                Category: Booting
                Severity: Major
                Priority: 5 - Normal
              Item Group: Software Error
                  Status: None
                 Privacy: Public
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 
                 Release: other
         Reproducibility: Every Time
         Planned Release: None

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Details:

UEFI grub2 1.99-rc2 with UEFI (a thinkpad w520 with 16GB memory, UEFI fireware
2.0)

I added UEFI shell (from
http://tianocore.git.sourceforge.net/git/gitweb.cgi?p=tianocore/edk2;a=blob_plain;f=EdkShellBinPkg/FullShell/X64/Shell_Full.efi;hb=HEAD
) to grub.conf (see the last menu entry in the attached grub.conf file)

How to reproduce:
Boot into grub (grub is my default /EFI/Boot/bootx64.efi)
Select the "UEFI Shell" option
after UEFI shell loads, exit it
in grub menu, select "UEFI Shell" option again
this time, UEFI shell does not start, instead I see the following:

/EndEntire
file path
/ACPI(a0341d0,0)/PCI(2,1f)/UnknownMessaging(12)/HD(1,800,64000,4e50fdc69bd3204c,ab,79)/File(\EFI)/File(shellx64.efi)
/EndEntire
alloc magic is broken at 0x5b398700

after turning on debug=all, this is what I get after repeating the above:

fs/fat.c:429: fat_size=32, next_cluster=9974
... (25 more lines like the above)
kern/disk.c:330: Closing 'hd1'.
script/lexer.c:307: token 259 text [
]
script/script.c:50: malloc 0x46b76020
script/script.c:50: malloc 0x493b3f80
script/lexer.c:307: token 0 text []
script/script.c:50: malloc 0x46f9e000
script/script.c:50: malloc 0x45fa2a20
alloc magic is broken at 0x46362e00
Aborted. Press any key to exit.

this "alloc magic is broken" error has happened to me numerous times (mostly
after I edited a menu entry, and try to boot the modified one with F10), but
this is the only one I can consistently reproduce

let me know if you need more info



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File Attachments:


-------------------------------------------------------
Date: Tue 26 Apr 2011 02:26:00 AM GMT  Name: grub.cfg  Size: 5kB   By:
liucougar
my current grub.cfg file
<http://savannah.gnu.org/bugs/download.php?file_id=23303>

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