Blaisorblade wrote:
[snip]
> Without any errors, after these messages:
>
> kjournald starting. Commit interval 5 seconds
> EXT3-fs: mounted filesystem with ordered data mode.
> VFS: Mounted root (ext3 filesystem) readonly.
>
> it hangs giving the following result at strace -p (I've printed two
> consecutive iterations of the same messages to show that they are the same):
>
> --- SIGCHLD (Child exited) @ 0 (0) ---
> wait4(31586, [{WIFSTOPPED(s) && WSTOPSIG(s) == SIGSEGV}], WSTOPPED, NULL) =
> 31586
> ptrace(PTRACE_GETREGS, 31586, 0, 0x6096dac8) = 0
> ptrace(PTRACE_GETFPREGS, 31586, 0, 0x6096dba0) = 0
> ptrace(PTRACE_CONT, 31586, 0, SIGSEGV) = 0
> --- SIGCHLD (Child exited) @ 0 (0) ---
> wait4(31586, [{WIFSTOPPED(s) && WSTOPSIG(s) == SIGUSR1}], WSTOPPED, NULL) =
> 31586
> ptrace(PTRACE_SETREGS, 31586, 0, 0x6096dac8) = 0
> ptrace(PTRACE_SETFPREGS, 31586, 0, 0x6096dba0) = 0
> ptrace(PTRACE_SYSCALL, 31586, 0, SIG_0) = 0
>
> --- SIGCHLD (Child exited) @ 0 (0) ---
> wait4(31586, [{WIFSTOPPED(s) && WSTOPSIG(s) == SIGSEGV}], WSTOPPED, NULL) =
> 31586
> ptrace(PTRACE_GETREGS, 31586, 0, 0x6096dac8) = 0
> ptrace(PTRACE_GETFPREGS, 31586, 0, 0x6096dba0) = 0
> ptrace(PTRACE_CONT, 31586, 0, SIGSEGV) = 0
> --- SIGCHLD (Child exited) @ 0 (0) ---
> wait4(31586, [{WIFSTOPPED(s) && WSTOPSIG(s) == SIGUSR1}], WSTOPPED, NULL) =
> 31586
> ptrace(PTRACE_SETREGS, 31586, 0, 0x6096dac8) = 0
> ptrace(PTRACE_SETFPREGS, 31586, 0, 0x6096dba0) = 0
> ptrace(PTRACE_SYSCALL, 31586, 0, SIG_0) = 0
>
> I'll have to verify whether some code in the stubs is miscompiled. But not
> until... well, I dunno when I'll be back...
>
> Anybody else with the same problem?
Isn't this is the same problem we discussed a few months back? What
I've discovered since then is this is a regression introduced after
2.6.16 on the _host_. Any post-2.6.16 host kernel, either skas v8.2 or
v9.pre causes Ubuntu (and other distros, I believe) to hang after "VFS
mounting root".
http://marc.theaimsgroup.com/?l=user-mode-linux-devel&m=116008558424368&w=2
http://marc.theaimsgroup.com/?l=user-mode-linux-devel&m=116711159414443&w=2
-Chris
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