Hi!
Back when I was in ubuntu maverick I compiled a 2.6.38.3 UML kernel
and was able to use it successfully. I'm working on developing a
kernel module. Due to a problem I flated gto ound during the
development of the driver I saw myself in the need to recompile the
kernel after upgrading to natty (don't know if this is related to the
problem). I recompiled the kernel with the old .config and it stared
to fail every single time with an abort signal. I removed the whole
kernel and replaced it from scratch and redid the whole compiation
process but it still fails. What's the meaning of this abortion onUMLs
boot time:
$ ./linux
Locating the bottom of the address space ... 0x10000
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...not found: No such file or directory
- PTRACE_FAULTINFO...not found
- PTRACE_LDT...not found
UML running in SKAS0 mode
Abortado
I just ran the binary.. if I try to run it with a real rootfs and
memory, it's the same thing:
$ !1894
../Linux/linux-2.6.38.3/linux debug ubda=rootfs_debian mem=256M
'debug' is not necessary to gdb UML in skas mode - run
'gdb linux'
Locating the bottom of the address space ... 0x10000
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...not found: No such file or directory
- PTRACE_FAULTINFO...not found
- PTRACE_LDT...not found
UML running in SKAS0 mode
Adding 7872512 bytes to physical memory to account for exec-shield gap
Abortado
Thanks in advance.
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