UML problems / kernel panic

[Nico Schottelius <nico-kernel@schottelius.org>]

Hello!

Sometimes when I "boot" 2.6.11.11/um, I get the following error:

--------------------------------------------------------------
VFS: Mounted root (jfs filesystem) readonly.
cinit-0.1 booting...
Kernel panic - not syncing: write of switch_pipe failed, err = 9

EIP: 0073:[<a03858b2>] CPU: 0 Not tainted ESP: 007b:a0c676b4 EFLAGS: 00000286
    Not tainted
EAX: 00000000 EBX: 00000001 ECX: a0c67754 EDX: a0c676d4
ESI: 00000008 EDI: 0000000a EBP: a0c676bc DS: 007b ES: 007b
Call Trace:
a0c6fa30:  [<a004df6d>]
a0c6fa40:  [<a023c7f6>]
a0c6fa50:  [<a003b8c1>]
a0c6fa64:  [<a001b430>]
a0c6fa70:  [<a002156e>]
a0c6fab0:  [<a03c8d45>]
a0c6fb00:  [<a0055e3a>]
a0c6fb20:  [<a0051d95>]
a0c6fb30:  [<a001d74f>]
a0c6fb40:  [<a0371b40>]
a0c6fb7c:  [<a0038700>]
a0c6fb9c:  [<a0038700>]
a0c6fbc8:  [<a0051ae0>]
a0c6fbd0:  [<a0055bb5>]
a0c6fc04:  [<a0055af0>]
a0c6fc10:  [<a001aab8>]
a0c6fc1c:  [<a0385984>]
a0c6fc28:  [<a0055af0>]
a0c6fc38:  [<a001aa80>]
a0c6fcd4:  [<a0055af0>]
a0c6fce0:  [<a00217db>]
a0c6fce4:  [<a0055af0>]
a0c6fd20:  [<a0385858>]
a0c6fd60:  [<a03858b2>]

 sleeping process 8915 got unexpected signal : 11

--------------------------------------------------------------

I don't know why this happens, as it is not always happening.

Nico

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