Red Hat Bugzilla – Bug 146928
kernel panic on ipv6 ping from teredo host
Last modified: 2015-01-04 17:16:29 EST
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Description of problem:
After adding a route to the Microsoft "Teredo" IPV6 net block,
the kernel panics after receiving a ping from a Teredo host
with the following message:
net/ipv6/icmp.c:93: spin_trylock(net/core/sock.c:dccaed1c) already
locked by net/ipv6/icmp.c/93
Kernel panic - not syncing: net/ipv6/icmp.c:106
spin_unlock(net/core/sock.c:dccaed1c) not locked
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. bring up 6to4 interface
2. add route with "ip -f inet6 route add 3ffe:831f::/32 dev tun6to4"
3. ping IPv6 address from remote teredo host
4. wait for smoke and ruin
Actual Results: kernel panic message (see description)
Expected Results: ipv6 ping reply
does this still happen with the current errata kernel ?
This bug has been mass-closed along with other bugs that have been in NEEDINFO
state for several months.
Due to the large volume of inactive bugs in bugzilla, this is the only method we
have of cleaning out stale bug reports where the reporter has disappeared.
If you can reproduce this bug after installing all the current updates, please
reopen this bug.
If you are not the reporter, you can add a comment requesting it be reopened,
and someone will get to it asap.