Public bug reported:
The patch
net: switch net_secret key generation to net_get_random_once
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e34c9a69970d8664a36b46e6445a7cc879111cfd
introduced a regression into kernel 3.13 that makes the kernel's nbd
client always use the same source port number (on some hardware). This
means that the second and subsequent boots for an LTSP client fail
because the sourceip / sourceport pair on the nbd server is still
occupied by the old nbd connection.
The patch
net: avoid dependency of net_get_random_once on nop patching
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=3d4405226d27b3a215e4d03cfa51f536244e5de7
should fix the issue and also went into -stable:
http://www.spinics.net/lists/netdev/msg282397.html
https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/commit/?id=adeb3fe4ef6621793d7f1d6f0b9c9cc88827c5b7
)
There are three independent reports on ltsp-discuss for this issue and the
original analysis was posted here:
https://www.mail-archive.com/ltsp-discuss@lists.sourceforge.net/msg41764.html
The issue can NOT be reproduced in VirtualBox and may be limited to certain
hardware - other users report they see no problems with 3.13. However, as this
is a -stable patch it should be applied anyway.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Confirmed
** Changed in: linux (Ubuntu)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/1330671
Title:
LTSP boot fails, missing -stable patch "net: avoid dependency of
net_get_random_once on nop patching"
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