From: "Philip A. Prindeville" <philipp_subx@redfish-solutions.com>
To: Kalle Valo <kalle.valo@iki.fi>
Cc: Johannes Berg <johannes@sipsolutions.net>,
Pavel Roskin <proski@gnu.org>, Markus Baier <markus_baier@web.de>,
linux-wireless@vger.kernel.org
Subject: Re: Starting hostapd causes kernel panic
Date: Sun, 24 Jan 2010 00:14:43 -0800 [thread overview]
Message-ID: <4B5C0173.9080100@redfish-solutions.com> (raw)
In-Reply-To: <87aaw4oxh0.fsf@purkki.valot.fi>
On 01/23/2010 09:58 PM, Kalle Valo wrote:
> "Philip A. Prindeville" <philipp_subx@redfish-solutions.com> writes:
>
>>>> Whatever you prefer. Either way, the panic is fixed now!
>>>>
>>> Great, and sorry about that! I'll send a patch to insert the else too.
>>>
>>> johannes
>>>
>>
>> Did you send that patch? I'd like to apply it. Please copy me when
>> you send it out.
>
> Johannes was busy and I sent the patch instead. It's here:
>
> http://marc.info/?l=linux-wireless&m=126427124317427&w=2
>
I just applied it to compat-wireless-2010-01-20 and ran it on an AR5413 but it still panics:
BUG: unable to handle kernel NULL pointer dereference at 0000019f
IP: [<e0993e7f>] :mac80211:invoke_tx_handlers+0x5be/0xe6a
*pde = 00000000
Oops: 0000 [#1] PREEMPT
Modules linked in: aes_i586 aes_generic pc87360 hwmon_vid hwmon bridge stp llc dummy ath5k mac80211 ath cfg80211 rfkill_backport compat dahdi_dummy dahdi sha512_generic sha256_generic deflate zlib_deflate arc4 ecb sha1_generic blowfish des_generic cbc cryptosoft cryptodev(P) ocf(P) geodewdt geode_rng geode_aes crypto_blkcipher via_rhine rtc cs5535_gpio
Pid: 1652, comm: hostapd Tainted: P (2.6.27.42-astlinux #1)
EIP: 0060:[<e0993e7f>] EFLAGS: 00010246 CPU: 0
EIP is at invoke_tx_handlers+0x5be/0xe6a [mac80211]
EAX: 00000000 EBX: df0b7cac ECX: 00000000 EDX: df0b7cac
ESI: df22dce0 EDI: df22dcc0 EBP: df22dce0 ESP: df0b7c10
DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068
Process hostapd (pid: 1652, ti=df0b6000 task=dfa43be0 task.ti=df0b6000)
Stack: df032920 00000000 dfa43be0 df0b7cac df22dcc0 df22dce0 df5658dc dfa75640
dfaa5b60 df22dce0 df0b7cac e099362e df0b7cac df0b7c5c df27a45e df204260
dfa43be0 c0112426 00100100 df27a450 0000000e 0000000f df27a45c 00000012
Call Trace:
[<e099362e>] ieee80211_tx_prepare+0x2ed/0x327 [mac80211]
[<c0112426>] default_wake_function+0x0/0x8
[<e0994904>] ieee80211_tx+0x94/0x21b [mac80211]
[<c02511cd>] pskb_expand_head+0xe7/0x14d
[<e0994bfd>] ieee80211_xmit+0x172/0x196 [mac80211]
[<e0994f3e>] ieee80211_monitor_start_xmit+0x8e/0xa0 [mac80211]
[<c02559d0>] dev_hard_start_xmit+0x196/0x1ef
[<c02611a8>] __qdisc_run+0xa1/0x183
[<c0257aee>] dev_queue_xmit+0x161/0x283
[<c0252311>] memcpy_fromiovec+0x28/0x4b
[<c02a3efc>] packet_sendmsg+0x1ba/0x200
[<c024c174>] sock_sendmsg+0xb7/0xd0
[<c0123bde>] autoremove_wake_function+0x0/0x2b
[<c0123bde>] autoremove_wake_function+0x0/0x2b
[<c015abe6>] core_sys_select+0x260/0x285
[<c0252579>] verify_iovec+0x3e/0x6d
[<c024c31a>] sys_sendmsg+0x18d/0x1f0
[<c013c232>] mark_page_accessed+0x18/0x27
[<c013778a>] filemap_fault+0x202/0x364
[<c01b7abc>] unionfs_fault+0x50/0x58
[<c0140071>] __do_fault+0x2b7/0x2e9
[<c01411fb>] handle_mm_fault+0x219/0x4a3
[<c024d209>] sys_socketcall+0x15b/0x193
[<c02ad674>] do_page_fault+0x0/0x60d
[<c01037e6>] syscall_call+0x7/0xb
[<c02a0000>] unix_dgram_disconnected+0x39/0x4e
=======================
Code: 00 00 10 74 1f 0f b7 03 a8 0c 0f 84 52 08 00 00 eb 12 0f b7 03 a8 0c 74 0b 8b 4c 24 0c c7 41 10 00 00 00 00 8b 5c 24 0c 8b 43 10 <f6> 80 9f 01 00 00 01 0f 84 2a 08 00 00 05 98 01 00 00 89 45 1c
EIP: [<e0993e7f>] invoke_tx_handlers+0x5be/0xe6a [mac80211] SS:ESP 0068:df0b7c10
Kernel panic - not syncing: Fatal exception in interrupt
Slightly different from Markus's trace.
next prev parent reply other threads:[~2010-01-24 8:15 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
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 [this message]
2010-01-24 8:27 ` Kalle Valo
2010-01-24 11:42 ` Johannes Berg
2010-01-24 21:07 ` Philip A. Prindeville
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=4B5C0173.9080100@redfish-solutions.com \
--to=philipp_subx@redfish-solutions.com \
--cc=johannes@sipsolutions.net \
--cc=kalle.valo@iki.fi \
--cc=linux-wireless@vger.kernel.org \
--cc=markus_baier@web.de \
--cc=proski@gnu.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.