[uml-devel] Debug under Skas3 start_uml - start_userspace returned -22

[uml-devel] Debug under Skas3 start_uml - start_userspace returned -22

[Xm Zhu]

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HI
All
I have patched my linux host for ska3 and it can run under skas3 mode. However, when I gdb linux
i. I want to follow 
r
ubd0=/home/jdike/roots/cow.debian,/home/jdike/roots/debian_22
con=port:9000 ssl=pty con0=fd:0,fd:1 umid=debian mem=128M

however, I do not the meaning of ubd0 ,since there is no cow.debian under my roots. I really do not know how to set these parameters.

So , I just put (after setting handle two signals)
r 
It comes out
Starting program: ~/linux-2.6.27.6/linux 
Locating the bottom of the address space ... 0x0
Locating the top of the address space ... 0xc0000000
Core dump limits :
        soft - 0
        hard - NONE
Checking that ptrace can change system call numbers...OK
Checking syscall emulation patch for ptrace...OK
Checking advanced syscall emulation patch for ptrace...OK
Checking for tmpfs mount on /dev/shm...OK
Checking PROT_EXEC mmap in /dev/shm/...OK
Checking for the skas3 patch in the host:
  - /proc/mm...found
  - PTRACE_FAULTINFO...found
  -
 PTRACE_LDT...found
UML running in SKAS3 mode
[New LWP 7387]
[LWP 7387 exited]
start_uml - start_userspace returned -22

IS there anyone can help me?
thankyou
 



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