The following reply was made to PR kern/144755; it has been noted by GNATS.
From: Edwin Groothuis <ed...@mavetju.org>
To: Bernhard Schmidt <bschm...@techwires.net>
Cc: bug-follo...@freebsd.org
Subject: Re: kern/144755: [iwi] [panic] iwi panic when issuing /etc/rc.d/netif
restart on 8-STABLE r205159
Date: Thu, 5 Aug 2010 08:31:27 +1000
Hello Bernhard!
On Wed, Jul 28, 2010 at 12:11:17PM +0200, Bernhard Schmidt wrote:
> Can you check if wpa_supplicant gets started twice after
> "/etc/rc.d/netif restart"?
According to core.txt there are two wpa_supplicant processes, but
I don't know if it is caused by a fork of itself or if it is caused
by something started twice:
0 7084 1 0 56 0 5192 0 select Ds ?? 3686:38.00
[wpa_suppli
0 7085 1 0 57 0 5192 0 select Ds ?? 2617:11.00
[wpa_suppli
Based on the PPID of 1 for both, I would say it gets started twice.
root wpa_supplicant 7085 root / 2 drwxr-xr-x 512 r
root wpa_supplicant 7085 wd / 2 drwxr-xr-x 512 r
root wpa_supplicant 7085 text /usr 4526084 -r-xr-xr-x 295932 r
root wpa_supplicant 7085 0 /dev 7 crw-rw-rw- null rw
root wpa_supplicant 7085 1 /dev 7 crw-rw-rw- null rw
root wpa_supplicant 7085 2 /dev 7 crw-rw-rw- null rw
root wpa_supplicant 7085 3* internet dgram udp c52b1000
root wpa_supplicant 7085 4* route raw 0 c527f4d4
root wpa_supplicant 7085 5 /dev 15 crw------- bpf rw
root wpa_supplicant 7084 root / 2 drwxr-xr-x 512 r
root wpa_supplicant 7084 wd / 2 drwxr-xr-x 512 r
root wpa_supplicant 7084 text /usr 4526084 -r-xr-xr-x 295932 r
root wpa_supplicant 7084 0 /dev 7 crw-rw-rw- null rw
root wpa_supplicant 7084 1 /dev 7 crw-rw-rw- null rw
root wpa_supplicant 7084 2 /dev 7 crw-rw-rw- null rw
root wpa_supplicant 7084 3* internet dgram udp c4f520dc
root wpa_supplicant 7084 4* route raw 0 c527f670
root wpa_supplicant 7084 5* local stream c4f508bc
root wpa_supplicant 7084 6 /var 23622 -rw------- 4 w
root wpa_supplicant 7084 7* local stream c4f5035c <-> c4f50408
root wpa_supplicant 7084 8 /dev 15 crw------- bpf rw
> I have the feeling that this is a more or less known issue, a race
> between devd (/etc/pccard_ether) and /etc/rc.d/netif. There is a small
> window (a few ms) where this can happen and our net80211 isn't capable
> of handling two running wpa_supplicants on the same interface. Which
> leads to all kind of weird issues, .e.g. panics.
Nice! Is there a workaround or patch available for testing?
Edwin
--
Edwin Groothuis Website: http://www.mavetju.org/
ed...@mavetju.org Weblog: http://www.mavetju.org/weblog/
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