From: Pavel Roskin <proski@gnu.org>
To: Johannes Berg <johannes@sipsolutions.net>
Cc: Markus Baier <Markus_Baier@web.de>,
linux-wireless@vger.kernel.org, kalle.valo@iki.fi
Subject: Re: Starting hostapd causes kernel panic
Date: Fri, 22 Jan 2010 16:42:06 -0500 [thread overview]
Message-ID: <1264196526.3040.3.camel@mj> (raw)
In-Reply-To: <1264193623.2593.17.camel@johannes.local>
On Fri, 2010-01-22 at 21:53 +0100, Johannes Berg wrote:
> Try this please.
I'm still getting a panic in ieee80211_tx_h_select_key():
BUG: unable to handle kernel NULL pointer dereference at 00000000000001cf
IP: [<ffffffffa0167e1a>] ieee80211_tx_h_select_key+0x26a/0x300 [mac80211]
PGD 12a7f8067 PUD 126450067 PMD 0
Oops: 0000 [#1] SMP
last sysfs file: /sys/devices/pci0000:00/0000:00:1e.0/0000:02:02.0/irq
CPU 0
Pid: 19396, comm: hostapd Not tainted 2.6.33-rc4-wl #239 G31T-M/G31T-M
RIP: 0010:[<ffffffffa0167e1a>] [<ffffffffa0167e1a>] ieee80211_tx_h_select_key+0x26a/0x300 [mac80211]
(gdb) l *(ieee80211_tx_h_select_key+0x26a)
0x16e4a is in ieee80211_tx_h_select_key (/home/proski/src/linux-2.6/net/mac80211/tx.c:550).
545 case ALG_CCMP:
546 if (!ieee80211_is_data_present(hdr->frame_control) &&
547 !ieee80211_use_mfp(hdr->frame_control, tx->sta,
548 tx->skb))
549 tx->key = NULL;
550 skip_hw = (tx->key->conf.flags &
551 IEEE80211_KEY_FLAG_SW_MGMT) &&
552 ieee80211_is_mgmt(hdr->frame_control);
553 break;
554 case ALG_AES_CMAC:
I assume it's another case where tx->key should be checked for being
NULL. In fact, it's set to NULL on the preceding line!
--
Regards,
Pavel Roskin
next prev parent reply other threads:[~2010-01-22 21:42 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-01-22 20:14 Starting hostapd causes kernel panic Markus Baier
2010-01-22 20:23 ` pat-lkml
2010-01-22 20:59 ` Markus Baier
2010-01-22 20:28 ` Johannes Berg
2010-01-22 22:45 ` Markus Baier
2010-01-22 20:53 ` Johannes Berg
2010-01-22 21:42 ` Pavel Roskin [this message]
2010-01-22 21:50 ` Markus Baier
2010-01-22 21:53 ` Johannes Berg
2010-01-22 22:06 ` Pavel Roskin
2010-01-23 12:59 ` Johannes Berg
2010-01-23 21:53 ` Philip A. Prindeville
2010-01-24 5:58 ` Kalle Valo
2010-01-24 8:14 ` Philip A. Prindeville
2010-01-24 8:27 ` Kalle Valo
2010-01-24 11:42 ` Johannes Berg
2010-01-24 21:07 ` Philip A. Prindeville
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