2.6.18 UML machine on FC6 host
Hi,
I am trying to build and run a UML 2.6.18 machine on a FC6 host. (2.6.18-1.2798)
I have tried many patches from the list and was not able to be successful (hang after VFS: Mounted root (ext3 filesystem) readonly.) Does the host need a special patch to run recent UML kernel or is it only an issue in the UML machine ?
JCL
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Quoted 2 lines · Jacques-Charles Lafoucriere
I am trying to build and run a UML 2.6.18 machine on a FC6 host. (2.6.18-1.2798)
Why are you insisting on a 2.6.18 UML?
Quoted 2 lines
I have tried many patches from the list and was not able to be successful (hang after VFS: Mounted root (ext3 filesystem) readonly.)
Try 2.6.21-rc4 or this patch:
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff_plain;h=14251809b1921b1216568700f1be2f91a1cbb5c7
Quoted 2 lines
Does the host need a special patch to run recent UML kernel or is it only an issue in the UML machine ?
It was a bug in UML's handing of newer host VDSOs.
Jeff
Signature · 11 lines
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Quoted 7 lines · Jeff Dike
Quoted 2 lines · Jacques-Charles Lafoucriere
I am trying to build and run a UML 2.6.18 machine on a FC6 host. (2.6.18-1.2798)
Why are you insisting on a 2.6.18 UML?
I work on some kernel product that will be available on RHEL5 which uses 2.6.18 And RHEL5 kernel does not work in the UML target, so a vanilla 2.6.18 is the closest kernel I want to avoid a 2.6.20 or later port of the product
Quoted 8 lines
Quoted 4 lines
I have tried many patches from the list and was not able to be successful (hang after VFS: Mounted root (ext3 filesystem) readonly.)
Try 2.6.21-rc4 or this patch:
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff_plain;h=14251809b1921b1216568700f1be2f91a1cbb5c7
Ok I will try
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Hi,
I applied the patch to a 2.6.20 kernel and tried the 2.6.21-rc4 and still have the issue
The UML machine is in an infinite loop
ptrace(PTRACE_GETREGS, 16641, 0, 0x9dc5974) = 0 ptrace(PTRACE_GETFPXREGS, 16641, 0, 0x9dc5a24) = 0 ptrace(PTRACE_CONT, 16641, 0, SIGSEGV) = 0waitpid(16641, [{WIFSTOPPED(s) && WSTOPSIG(s) == SIGUSR1}], WSTOPPED) = 16641 --- SIGCHLD (Child exited) @ 0 (0) ---ptrace(PTRACE_SETREGS, 16641, 0, 0x9dc5974) = 0 ptrace(PTRACE_SETFPXREGS, 16641, 0, 0x9dc5a24) = 0ptrace(0x1f /* PTRACE_??? */, 16641, 0, 0) = 0
--- SIGCHLD (Child exited) @ 0 (0) ---waitpid(16641, [{WIFSTOPPED(s) && WSTOPSIG(s) == SIGSEGV}], WSTOPPED) = 16641 ptrace(PTRACE_GETREGS, 16641, 0, 0x9dc5974) = 0 ptrace(PTRACE_GETFPXREGS, 16641, 0, 0x9dc5a24) = 0 ptrace(PTRACE_CONT, 16641, 0, SIGSEGV) = 0
--- SIGCHLD (Child exited) @ 0 (0) ---
Do I have to change things on my host machine ? (I use 2.6.18-1.2798 with no skas3 patch)
Quoted 16 lines · Jeff Dike
Quoted 2 lines · Jacques-Charles Lafoucriere
I am trying to build and run a UML 2.6.18 machine on a FC6 host. (2.6.18-1.2798)
Why are you insisting on a 2.6.18 UML?
Quoted 3 lines
I have tried many patches from the list and was not able to be successful (hang after VFS: Mounted root (ext3 filesystem) readonly.)
Try 2.6.21-rc4 or this patch:
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff_plain;h=14251809b1921b1216568700f1be2f91a1cbb5c7
Quoted 8 lines
Quoted 2 lines
Does the host need a special patch to run recent UML kernel or is it only an issue in the UML machine ?
It was a bug in UML's handing of newer host VDSOs.
Jeff
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Quoted 7 lines · Jacques-Charles Lafoucriere
I applied the patch to a 2.6.20 kernel and tried the 2.6.21-rc4 and still have the issue
The UML machine is in an infinite loop
Do I have to change things on my host machine ? (I use 2.6.18-1.2798 with no skas3 patch)
No.
What is the host?
Can you send me the -rc4 binary so I can see if I get the same behavior here? If it works for me, is it possible for me to debug on your host?
Jeff
Signature · 11 lines
Work email - jdike at linux dot intel dot com ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ User-mode-linux-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel
Quoted 4 lines · Jeff Dike
Quoted 2 lines · Jacques-Charles Lafoucriere
I applied the patch to a 2.6.20 kernel and tried the 2.6.21-rc4 and still have the issue
Quoted 9 lines
Quoted 4 lines
The UML machine is in an infinite loop
Do I have to change things on my host machine ? (I use 2.6.18-1.2798 with no skas3 patch)
No.
What is the host?
Dell Lattitude D820, Linux IA32
Quoted 5 lines
Can you send me the -rc4 binary so I can see if I get the same behavior here? If it works for me, is it possible for me to debug on your host?
I send you the kernel directly (too large for a list) You cannot access the machine but I can send you traces.
JC
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