Is this normal as well?
phy0: Selected rate control algorithm 'pid'
ath5k phy0: Atheros AR5414 chip found (MAC: 0xa5, PHY: 0x61)
phy0: Adding new IBSS station XXX (dev=wlan0)
------------[ cut here ]------------
WARNING: at net/mac80211/ieee80211_rate.h:149 rate_control_pid_rate_init+0x6c/0x7c()
Modules linked in: ixp4xx_eth ixp4xx_hss ixp4xx_qmgr ixp4xx_npe ath5k
[<c00c1b3c>] (dump_stack+0x0/0x14) from [<c00d463c>] (warn_on_slowpath+0x4c/0x60)
[<c00d45f0>] (warn_on_slowpath+0x0/0x60) from [<c032a50c>] (rate_control_pid_rate_init+0x6c/0x7c)
r6:c689e800 r5:c7cace18 r4:c68ab000
[<c032a4a0>] (rate_control_pid_rate_init+0x0/0x7c) from [<c031e56c>] (ieee80211_ibss_add_sta+0xb0/0x114)
r5:c7cac160 r4:c68ab000
[<c031e4bc>] (ieee80211_ibss_add_sta+0x0/0x114) from [<c0323b5c>] (__ieee80211_rx_handle_packet+0x87c/0x978)
r8:c6876030 r7:c7cac160 r6:c689eb60 r5:00000000 r4:00000000
[<c03232e0>] (__ieee80211_rx_handle_packet+0x0/0x978) from [<c0324a54>] (__ieee80211_rx+0x2b4/0x6dc)
[<c03247a0>] (__ieee80211_rx+0x0/0x6dc) from [<bf0028cc>] (ath5k_tasklet_rx+0x35c/0x66c [ath5k])
[<bf002570>] (ath5k_tasklet_rx+0x0/0x66c [ath5k]) from [<c00da158>] (tasklet_action+0x70/0xe8)
[<c00da0e8>] (tasklet_action+0x0/0xe8) from [<c00da000>] (__do_softirq+0x68/0xe0)
r5:c0404764 r4:00000001
[<c00d9f98>] (__do_softirq+0x0/0xe0) from [<c00da3a8>] (irq_exit+0x48/0x50)
r7:00000000 r6:c040be90 r5:c03e2ff4 r4:0000001d
[<c00da360>] (irq_exit+0x0/0x50) from [<c00bd048>] (asm_do_IRQ+0x48/0x5c)
[<c00bd000>] (asm_do_IRQ+0x0/0x5c) from [<c00bd604>] (__irq_svc+0x24/0x60)
Exception stack(0xc03ddf50 to 0xc03ddf98)
df40: c03f39b4 60000013 00000000 c03f36f0
df60: c00beaa4 c03dc000 c03f36e8 c03dfc18 0001e8c8 690541c1 0001e7c4 c03ddfa4
df80: c03ddfa8 c03ddf98 c00be960 c00beac4 60000013 ffffffff
r7:c03dfc18 r6:20000000 r5:0000001f r4:ffffffff
[<c00beaa4>] (default_idle+0x0/0x4c) from [<c00be960>] (cpu_idle+0x44/0x60)
[<c00be91c>] (cpu_idle+0x0/0x60) from [<c032b16c>] (rest_init+0x50/0x60)
r6:c00b8ef8 r5:c03f3290 r4:c04070c8
[<c032b11c>] (rest_init+0x0/0x60) from [<c0008d64>] (start_kernel+0x220/0x2f0)
[<c0008b44>] (start_kernel+0x0/0x2f0) from [<00008034>] (0x8034)
r6:c00b92fc r5:c03f3750 r4:000039fd
---[ end trace ba328405e244b5ec ]---
XScale (ARM) big-endian (IXP425 CPU), gcc 4.2.4pre, perhaps while
doing "iwlist scan".
--
Krzysztof Halasa
Krzysztof Halasa <[email protected]> writes:
> ath5k phy0: Atheros AR5414 chip found (MAC: 0xa5, PHY: 0x61)
> phy0: Adding new IBSS station XXX (dev=wlan0)
> ------------[ cut here ]------------
> WARNING: at net/mac80211/ieee80211_rate.h:149 rate_control_pid_rate_init+0x6c/0x7c()
> Modules linked in: ixp4xx_eth ixp4xx_hss ixp4xx_qmgr ixp4xx_npe ath5k
> [<c00c1b3c>] (dump_stack+0x0/0x14) from [<c00d463c>] (warn_on_slowpath+0x4c/0x60)
> [<c00d45f0>] (warn_on_slowpath+0x0/0x60) from [<c032a50c>] (rate_control_pid_rate_init+0x6c/0x7c)
> r6:c689e800 r5:c7cace18 r4:c68ab000
> [<c032a4a0>] (rate_control_pid_rate_init+0x0/0x7c) from [<c031e56c>] (ieee80211_ibss_add_sta+0xb0/0x114)
> r5:c7cac160 r4:c68ab000
> [<c031e4bc>] (ieee80211_ibss_add_sta+0x0/0x114) from [<c0323b5c>] (__ieee80211_rx_handle_packet+0x87c/0x978)
> r8:c6876030 r7:c7cac160 r6:c689eb60 r5:00000000 r4:00000000
> [<c03232e0>] (__ieee80211_rx_handle_packet+0x0/0x978) from [<c0324a54>] (__ieee80211_rx+0x2b4/0x6dc)
> [<c03247a0>] (__ieee80211_rx+0x0/0x6dc) from [<bf0028cc>] (ath5k_tasklet_rx+0x35c/0x66c [ath5k])
> [<bf002570>] (ath5k_tasklet_rx+0x0/0x66c [ath5k]) from [<c00da158>] (tasklet_action+0x70/0xe8)
> [<c00da0e8>] (tasklet_action+0x0/0xe8) from [<c00da000>] (__do_softirq+0x68/0xe0)
> r5:c0404764 r4:00000001
> [<c00d9f98>] (__do_softirq+0x0/0xe0) from [<c00da3a8>] (irq_exit+0x48/0x50)
> r7:00000000 r6:c040be90 r5:c03e2ff4 r4:0000001d
> [<c00da360>] (irq_exit+0x0/0x50) from [<c00bd048>] (asm_do_IRQ+0x48/0x5c)
> [<c00bd000>] (asm_do_IRQ+0x0/0x5c) from [<c00bd604>] (__irq_svc+0x24/0x60)
> Exception stack(0xc03ddf50 to 0xc03ddf98)
> df40: c03f39b4 60000013 00000000 c03f36f0
> df60: c00beaa4 c03dc000 c03f36e8 c03dfc18 0001e8c8 690541c1 0001e7c4 c03ddfa4
> df80: c03ddfa8 c03ddf98 c00be960 c00beac4 60000013 ffffffff
> r7:c03dfc18 r6:20000000 r5:0000001f r4:ffffffff
> [<c00beaa4>] (default_idle+0x0/0x4c) from [<c00be960>] (cpu_idle+0x44/0x60)
> [<c00be91c>] (cpu_idle+0x0/0x60) from [<c032b16c>] (rest_init+0x50/0x60)
> r6:c00b8ef8 r5:c03f3290 r4:c04070c8
> [<c032b11c>] (rest_init+0x0/0x60) from [<c0008d64>] (start_kernel+0x220/0x2f0)
> [<c0008b44>] (start_kernel+0x0/0x2f0) from [<00008034>] (0x8034)
> r6:c00b92fc r5:c03f3750 r4:000039fd
> ---[ end trace ba328405e244b5ec ]---
This one is occuring on ARM little-endian as well.
--
Krzysztof Halasa
On Tue, Feb 26, 2008 at 06:29:11PM +0100, Krzysztof Halasa wrote:
> Is this normal as well?
>
> phy0: Selected rate control algorithm 'pid'
> ath5k phy0: Atheros AR5414 chip found (MAC: 0xa5, PHY: 0x61)
> phy0: Adding new IBSS station XXX (dev=wlan0)
> ------------[ cut here ]------------
> WARNING: at net/mac80211/ieee80211_rate.h:149 rate_control_pid_rate_init+0x6c/0x7c()
> Modules linked in: ixp4xx_eth ixp4xx_hss ixp4xx_qmgr ixp4xx_npe ath5k
> [<c00c1b3c>] (dump_stack+0x0/0x14) from [<c00d463c>] (warn_on_slowpath+0x4c/0x60)
> [<c00d45f0>] (warn_on_slowpath+0x0/0x60) from [<c032a50c>] (rate_control_pid_rate_init+0x6c/0x7c)
> r6:c689e800 r5:c7cace18 r4:c68ab000
> [<c032a4a0>] (rate_control_pid_rate_init+0x0/0x7c) from [<c031e56c>] (ieee80211_ibss_add_sta+0xb0/0x114)
> r5:c7cac160 r4:c68ab000
<snip>
Looks like you are hitting the WARN_ON in rate_lowest_index (called
from rate_control_pid_rate_init). Perhaps your supported band
information is not being setup correctly? Possibly an endian problem?
Just speculating, really...
John
--
John W. Linville
[email protected]
Pavel Roskin <[email protected]> writes:
> There are indeed endian issues reported by sparse in the IBSS code.
> I've just submitted a patch. Not sure if they are relevant to the
> issue, but I think it's worth trying.
Actually these two warnings usually don't show up, it's once per maybe
5 or 10 restarts. We will see.
--
Krzysztof Halasa
On Tue, 2008-02-26 at 14:33 -0500, John W. Linville wrote:
> On Tue, Feb 26, 2008 at 06:29:11PM +0100, Krzysztof Halasa wrote:
> > Is this normal as well?
> >
> > phy0: Selected rate control algorithm 'pid'
> > ath5k phy0: Atheros AR5414 chip found (MAC: 0xa5, PHY: 0x61)
> > phy0: Adding new IBSS station XXX (dev=wlan0)
> > ------------[ cut here ]------------
> > WARNING: at net/mac80211/ieee80211_rate.h:149 rate_control_pid_rate_init+0x6c/0x7c()
> > Modules linked in: ixp4xx_eth ixp4xx_hss ixp4xx_qmgr ixp4xx_npe ath5k
> > [<c00c1b3c>] (dump_stack+0x0/0x14) from [<c00d463c>] (warn_on_slowpath+0x4c/0x60)
> > [<c00d45f0>] (warn_on_slowpath+0x0/0x60) from [<c032a50c>] (rate_control_pid_rate_init+0x6c/0x7c)
> > r6:c689e800 r5:c7cace18 r4:c68ab000
> > [<c032a4a0>] (rate_control_pid_rate_init+0x0/0x7c) from [<c031e56c>] (ieee80211_ibss_add_sta+0xb0/0x114)
> > r5:c7cac160 r4:c68ab000
>
> <snip>
>
> Looks like you are hitting the WARN_ON in rate_lowest_index (called
> from rate_control_pid_rate_init). Perhaps your supported band
> information is not being setup correctly? Possibly an endian problem?
> Just speculating, really...
There are indeed endian issues reported by sparse in the IBSS code.
I've just submitted a patch. Not sure if they are relevant to the
issue, but I think it's worth trying.
--
Regards,
Pavel Roskin