https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=233535
Bjoern A. Zeeb changed:
What|Removed |Added
Assignee|n...@freebsd.org |hsela...@freebsd.org
--- Comment
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=233535
Hans Petter Selasky changed:
What|Removed |Added
Attachment #200699|0 |1
is obsolete|
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=233535
Hans Petter Selasky changed:
What|Removed |Added
Attachment #200658|0 |1
is obsolete|
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=233535
--- Comment #20 from Hans Petter Selasky ---
Created attachment 200658
--> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=200658&action=edit
Fix missing decrement of refcount in IPv6 code (w/ additional debug code)
ae@ : Can you tes
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=233535
--- Comment #19 from Hans Petter Selasky ---
Just before the panic above, the following functions were called. It turns out
there is a race that mld_fasttimo() can be called during in6_joingroup().
--HPS
acquire_locked - post inc - 0x
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=233535
--- Comment #18 from Hans Petter Selasky ---
Documenting yet another related crash scenario:
#12 0x80e292f0 in mld_change_state (inm=0xf802eb1f5800, delay=0)
at /usr/img/freebsd/sys/netinet6/mld6.c:1909
#13 0x80e154
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=233535
--- Comment #17 from Andrey V. Elsukov ---
So, trying with enabled/disabled net.inet6.mld.v1enable I discovered, that with
disabled MLDv1 it doesn't panic. But the problem when host leaves multicast
groups and stops respond to ND6 NS due to
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=233535
--- Comment #16 from Andrey V. Elsukov ---
Unread portion of the kernel message buffer:
panic: Assertion inm->in6m_refcount > 0 failed at
/home/devel/freebsd/base/head/sys/netinet6/in6_mcast.c:636
cpuid = 0
time = 1545140639
KDB: stack back
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=233535
--- Comment #15 from Hans Petter Selasky ---
Can you try the patch with MPASS() removed?
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--- Comment #14 from Hans Petter Selasky ---
Can you show the backtrace?
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--- Comment #13 from Andrey V. Elsukov ---
So, my guess is that (In reply to Hans Petter Selasky from comment #12)
> Created attachment 200199 [details]
> Fix missing decrement of refcount in IPv6 code.
>
> Hi,
>
> Please find attached a
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=233535
--- Comment #12 from Hans Petter Selasky ---
Created attachment 200199
--> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=200199&action=edit
Fix missing decrement of refcount in IPv6 code.
Hi,
Please find attached a patch to try to
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=233535
--- Comment #11 from Andrey V. Elsukov ---
Also there is memory leak for "in6_multi" type. It can be observed by this
script:
while true; do
ifconfig mce3 inet6 fe80::15
sleep 2
done
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Andrey V. Elsukov changed:
What|Removed |Added
CC||b...@freebsd.org
--- Comment #
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=233535
--- Comment #9 from Andrey V. Elsukov ---
It seems the problem is even worse. The system leaves multicast groups after
some time without any reconfiguration and stops to reply to ND6 NS.
1. ifmcstat before test:
em0:
inet 10.9.8.6
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=233535
Andrey V. Elsukov changed:
What|Removed |Added
CC||mm...@freebsd.org
--- Comment
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=233535
--- Comment #7 from Slava Shwartsman ---
Any updates?
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--- Comment #6 from Slava Shwartsman ---
(In reply to Andrey V. Elsukov from comment #5)
This is the output after the issue reproduced:
# ifconfig igb0
igb0: flags=8843 metric 0 mtu 1500
options=e527bb
ether 0c:c4:7a:a8:b7:
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=233535
--- Comment #5 from Andrey V. Elsukov ---
(In reply to Slava Shwartsman from comment #4)
> (In reply to Andrey V. Elsukov from comment #3)
> I would expect that ping will continue to work.
I'll try to reproduce this. But can you also show
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--- Comment #4 from Slava Shwartsman ---
(In reply to Conrad Meyer from comment #1)
Same issue appeared when setting the prefix:
HOST A: ifconfig igb0 inet6 2002::1/64
HOST B: ifconfig igb0 inet6 2002::2/64
# ping6 2002::2
PING6(56=40+8+8
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Mark Linimon changed:
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Assignee|b...@freebsd.org|n...@freebsd.org
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