I have further isolated this.
I disabled/removed basically all custom configuration I had on the
system, and was still able to trigger it.
This:
em3: flags=8802<BROADCAST,SIMPLEX,MULTICAST> mtu 1500
lladdr 00:04:23:c2:9f:27
priority: 0
media: Ethernet autoselect (1000baseT full-duplex)
status: active
-=[~]=- -=[Fri May 11]=- -=[22:46:55]=-
[root@charon]# ifconfig em3 lladdr 00:04:23:c2:9f:ff
-=[~]=- -=[Fri May 11]=- -=[22:47:11]=-
[root@charon]# ifconfig em2 up
-=[~]=- -=[Fri May 11]=- -=[22:47:13]=-
[root@charon]# ifconfig em3 up
-=[~]=- -=[Fri May 11]=- -=[22:47:16]=-
[root@charon]# ifconfig em3 down
-=[~]=- -=[Fri May 11]=- -=[22:47:20]=-
[root@charon]# ifconfig em3 lladdr 00:04:23:c2:9f:27
-=[~]=- -=[Fri May 11]=- -=[22:47:29]=-
[root@charon]# ifconfig em3 up
Write failed: Broken pipe
Shared connection to 10.0.12.14 closed.
Now, em3 has a conflicting address with another box in the same vlan.
This is/was managed with a script that hooks into dhclient (replaces
dhclient-script) and was relying on the PREINIT actions (now removed) to
change the ll address on the interface.
http://www.openbsd.org/cgi-bin/cvsweb/src/sbin/dhclient/dhclient.c.diff?r1=1.138;r2=1.139
That was, I guess, not so useless for me :)
In any event, it seems that even in this situation, the box really
shouldn't hang like this, still no idea why that happens.
-Adam
On 5/10/12 11:46 PM, Adam Jacob Muller wrote:
On 5/10/12 4:24 AM, JC)rC)mie CourrC(ges-Anglas wrote:
Please see
http://www.openbsd.org/faq/faq2.html
and
http://www.openbsd.org/report.html
Regards.
Hi,
I did do a sendbug, but i'm not sure if gnats@ goes anywhere (seems
query-pr page is broken?).
In any event, this is the ddb output of ps/show registers.
I'm fairly reliably able to reproduce this, if there is any more
information I can gather, let me know.
-=[~]=- -=[Thu May 10]=- -=[21:30:46]=-
[root@charon]# ifconfig em2 up
-=[~]=- -=[Thu May 10]=- -=[21:30:49]=-
[root@charon]# uptime
9:30PM up 2 mins, 1 user, load averages: 1.38, 0.50, 0.19
-=[~]=- -=[Thu May 10]=- -=[21:30:52]=-
[root@charon]# ifconfig em3 up
^EB^EStopped at Debugger+0x5: leave
ddb> show panic
the kernel did not panic
ddb> ps
PID PPID PGRP UID S FLAGS WAIT COMMAND
*31458 2782 31458 0 7 0 ifconfig
2782 1 2782 0 3 0x80 wait bash
9835 1 9835 0 3 0x80 ttyin getty
28249 1 28249 0 3 0x80 ttyin getty
1429 1 1429 0 3 0x80 ttyin getty
12859 1 12859 0 3 0x80 ttyin getty
15689 1 15689 0 3 0x80 ttyin getty
21720 1 21720 0 3 0x80 select cron
22103 15791 15791 0 3 0x80 nanosleep perl
15791 1 15791 0 3 0x80 poll collectd
17486 1711 1711 77 3 0x80 poll dhcpd
32181 15104 27517 90 3 0x80 kqread ospf6d
22133 15104 27517 90 3 0x80 kqread ospf6d
4380 27517 27517 0 3 0x80 piperd tee
15104 27517 27517 0 2 0x80 ospf6d
27517 11636 27517 0 3 0x88 pause sh
7865 22621 4001 83 3 0x80 poll ntpd
22621 4001 4001 83 3 0x80 poll ntpd
11636 1 11636 0 3 0x80 select screen
1711 22145 1711 77 3 0x80 poll dhcpd
4001 26301 4001 0 3 0x80 poll ntpd
22145 1 22145 0 3 0x80 select screen
20753 11069 20753 0 3 0x80 netcon php
11069 1 11069 0 3 0x80 select screen
26301 1 26301 0 3 0x80 select screen
23181 1 23181 556 3 0x80 select nrpe
13812 30502 30502 91 2 0x80 snmpd
30502 23345 30502 0 3 0x80 kqread snmpd
24114 6566 24114 0 3 0x80 nanosleep php
24896 12320 24896 0 3 0x80 nanosleep php
30324 26717 30324 0 3 0x80 nanosleep php
23345 1 23345 0 3 0x80 select screen
2939 17720 2939 0 3 0x80 nanosleep php
26717 1 26717 0 3 0x80 select screen
12320 1 12320 0 3 0x80 select screen
6566 1 6566 0 3 0x80 select screen
17720 1 17720 0 3 0x80 select screen
20349 31546 20349 0 3 0x80 poll syslog-ng
31546 1 13174 0 3 0x80 wait syslog-ng
22116 1 22116 99 3 0x80 poll sndiod
12536 1 12536 0 3 0x80 select inetd
21142 13495 13495 507 3 0x80 kqread qmgr
16697 13495 13495 507 3 0x80 kqread pickup
13495 1 13495 0 3 0x80 kqread master
17383 15889 15889 75 3 0x80 poll bgpd
2491 15889 15889 75 3 0x80 poll bgpd
15889 1 15889 0 2 0x80 bgpd
30554 15678 15678 90 3 0x80 kqread ospf6d
19811 15678 15678 90 3 0x80 kqread ospf6d
15678 1 15678 0 2 0x80 ospf6d
29524 1 29524 0 3 0x80 select sshd
26501 5231 5231 70 3 0x80 select named
5231 1 5231 0 3 0x80 netio named
21867 29781 29781 74 3 0x80 bpf pflogd
29781 1 29781 0 3 0x80 netio pflogd
9811 2867 2867 73 3 0x80 poll syslogd
2867 1 2867 0 3 0x80 netio syslogd
11 0 0 0 3 0x100200 aiodoned aiodoned
10 0 0 0 3 0x100200 syncer update
9 0 0 0 3 0x100200 cleaner cleaner
8 0 0 0 3 0x100200 reaper reaper
7 0 0 0 3 0x100200 pgdaemon pagedaemon
6 0 0 0 3 0x100200 bored crypto
5 0 0 0 3 0x100200 pftm pfpurge
4 0 0 0 3 0x100200 acpi0 acpi0
3 0 0 0 3 0x100200 bored syswq
2 0 0 0 3 0x40100200 idle0
1 0 1 0 3 0x80 wait init
0 -1 0 0 3 0x200 scheduler swapper
ddb> show registers
ds 0
es 0
fs 0x11
gs 0
rdi 0
rsi 0x3f8
rbp 0xffff80002140f838
rbx 0xf9
rdx 0x3f8
rcx 0x282
rax 0
r8 0xffffffff80d5fc30 x86_soft_intrs+0x50
r9 0x1
r10 0
r11 0xffffffff802bee60 pool_page_alloc
r12 0xffff800000168110
r13 0xffff800000164000
r14 0xffff800000144dc0
r15 0x3f8
rip 0xffffffff80431a15 Debugger+0x5
cs 0x8
rflags 0x202
rsp 0xffff80002140f838
ss 0x10
Debugger+0x5: leave
ddb> trace
Debugger() at Debugger+0x5
comintr() at comintr+0x268
Xintr_ioapic_edge4() at Xintr_ioapic_edge4+0xe0
--- interrupt ---
Bad frame pointer: 0xffff80002140faa0
end trace frame: 0xffff80002140faa0, count: -3
Xdoreti:
ddb> boot dump
^T
\
^T^TStopped at Debugger+0x5: leave
ddb>
dumping to dev 0,1 offset 523047
dump 2047 2046 2045 2044 2043 2042 2041 2040 2039 2038 2037 2036 2035
2034 2033 2032 2031 2030 2029 2028 2027 2026 2025 2024 2023 2022 2021
2020 2019 2010
rebooting...
