Out of memory problem with newer firmware
chris at martin.cc
chris at martin.cc
Mon Apr 11 05:59:05 EDT 2011
2011/4/11 Rafał Miłecki <zajec5 at gmail.com>
>
> Summary:
> 1) Chris has ASUS WL500pv2 with OpenWRT
> 2) This is router with Broadcom 5354 SoC and LP-PHY card
> 3) Firmware 410.2160 (broadcom-wl-4.150.10.5.tar.bz2) works OK
> 4) Firmware 478.104 (broadcom-wl-4.178.10.4.tar.bz2) causes OOM
>
> Larry was testing his LP-PHY with kmemleak but didn't find anything.
>
> Chris traced a lot of skbs being allocated before OOM (500+).
>
> I suspect that with new firmware we provide slightly different RX
> packets to mac80211 and there is sth wrong with mac80211 causing SKBs
> not being freed. I don't have any other idea how changing firmware
> could cause out of memory problems.
>
> The alloc code is question is dma.c::~585
> skb = __dev_alloc_skb(ring->rx_buffersize, gfp_flags);
>
> I've written patch to dump data we provide mac80211. My hope is to
> notice differences in that data between older vs. newer firmware.
>
> Chris: could you try attached patch and provide dmesg from older and
> newer firmware with this patch applied?
>
> --
> Rafał
I applied the patch to the latest OpenWrt trunk. (rev 26588) with
compat-wireless 2011-04-06
Experimental (478.104)
-----------------------------------------------------------------------------------------------------
b43-phy0: Loading firmware version 478.104 (2008-07-01 00:50:23)
b43-phy0: Loading firmware version 478.104 (2008-07-01 00:50:23)
device wlan0 entered promiscuous mode
br-lan: port 2(wlan0) entering forwarding state
br-lan: port 2(wlan0) entering forwarding state
b43-phy0 ERROR: RX: phystat0:0x0000 phystat3:0x3140 macstat:0x01060000
chanstat:0x000D mactime:0x1FE0
b43-phy0 ERROR: RX: ieee80211_rx_status: band:0 freq:31 signal:15
antenna:0 rate_idx:0 flag:0x0080
b43-phy0 ERROR: RX: phystat0:0x0000 phystat3:0x8540 macstat:0x01060000
chanstat:0x000D mactime:0x3EB7
b43-phy0 ERROR: RX: ieee80211_rx_status: band:0 freq:31 signal:-74
antenna:0 rate_idx:0 flag:0x0080
b43-phy0 ERROR: RX: phystat0:0x0000 phystat3:0x3140 macstat:0x01060000
chanstat:0x000D mactime:0x779E
b43-phy0 ERROR: RX: ieee80211_rx_status: band:0 freq:31 signal:-2
antenna:0 rate_idx:0 flag:0x0080
b43-phy0 ERROR: RX: phystat0:0x0000 phystat3:0x3140 macstat:0x01060000
chanstat:0x000D mactime:0x1D85
b43-phy0 ERROR: RX: ieee80211_rx_status: band:0 freq:31 signal:-14
antenna:0 rate_idx:0 flag:0x0080
b43-phy0 ERROR: RX: phystat0:0x0000 phystat3:0x8540 macstat:0x01060000
chanstat:0x000D mactime:0x5142
b43-phy0 ERROR: RX: ieee80211_rx_status: band:0 freq:31 signal:-50
antenna:0 rate_idx:0 flag:0x0080
Followed immediately by OOM
Stable (410.2160)
-----------------------------------------------------------------------------------------------------
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
device wlan0 entered promiscuous mode
br-lan: port 2(wlan0) entering forwarding state
br-lan: port 2(wlan0) entering forwarding state
b43-phy0 ERROR: RX:
phystat0:0x0000 phystat3:0x7940 macstat:0x01060000 chanstat:0x005D mactime:0xC2F6
b43-phy0 ERROR: RX: ieee80211_rx_status:
band:0 freq:33 signal:-19 antenna:0 rate_idx:0 flag:0x0080
b43-phy0 ERROR: RX:
phystat0:0x0020 phystat3:0x8540 macstat:0x01060004 chanstat:0x005D mactime:0xCD95
b43-phy0 ERROR: RX: ieee80211_rx_status:
band:0 freq:33 signal:-74 antenna:1 rate_idx:0 flag:0x0000
b43-phy0 ERROR: RX:
phystat0:0x0000 phystat3:0x2240 macstat:0x01060000 chanstat:0x005D mactime:0x2B07
b43-phy0 ERROR: RX: ieee80211_rx_status:
band:0 freq:33 signal:-24 antenna:0 rate_idx:0 flag:0x0080
b43-phy0 ERROR: RX:
phystat0:0x0001 phystat3:0x31A0 macstat:0x01060000 chanstat:0x005D mactime:0xEAE0
b43-phy0 ERROR: RX: ieee80211_rx_status:
band:0 freq:33 signal:-19 antenna:0 rate_idx:11 flag:0x0000
b43-phy0 ERROR: RX:
phystat0:0x0001 phystat3:0x31A0 macstat:0x01060000 chanstat:0x005D mactime:0xEF34
b43-phy0 ERROR: RX: ieee80211_rx_status:
band:0 freq:33 signal:-22 antenna:0 rate_idx:11 flag:0x0000
device wlan0 left promiscuous mode
br-lan: port 2(wlan0) entering forwarding state
device wlan0 entered promiscuous mode
br-lan: port 2(wlan0) entering forwarding state
br-lan: port 2(wlan0) entering forwarding state
net_ratelimit: 348 callbacks suppressed
b43-phy0 ERROR: RX:
phystat0:0x0020 phystat3:0xB540 macstat:0x01068000 chanstat:0x005D mactime:0x52E8
b43-phy0 ERROR: RX: ieee80211_rx_status:
band:0 freq:33 signal:-21 antenna:1 rate_idx:0 flag:0x0080
b43-phy0 ERROR: RX:
phystat0:0x0000 phystat3:0x3140 macstat:0x01068028 chanstat:0x005D mactime:0x5985
b43-phy0 ERROR: RX: ieee80211_rx_status:
band:0 freq:33 signal:-21 antenna:0 rate_idx:0 flag:0x0000
b43-phy0 ERROR: RX:
phystat0:0x0000 phystat3:0x2240 macstat:0x01068000 chanstat:0x005D mactime:0xBB50
b43-phy0 ERROR: RX: ieee80211_rx_status:
band:0 freq:33 signal:-13 antenna:0 rate_idx:0 flag:0x0080
b43-phy0 ERROR: RX:
phystat0:0x0000 phystat3:0x8540 macstat:0x01068000 chanstat:0x005D mactime:0x16DC
b43-phy0 ERROR: RX: ieee80211_rx_status:
band:0 freq:33 signal:-76 antenna:0 rate_idx:0 flag:0x0080
b43-phy0 ERROR: RX:
phystat0:0x0000 phystat3:0x8540 macstat:0x01068000 chanstat:0x005D mactime:0x2000
b43-phy0 ERROR: RX: ieee80211_rx_status:
band:0 freq:33 signal:-77 antenna:0 rate_idx:0 flag:0x0080
net_ratelimit: 400 callbacks suppressed
b43-phy0 ERROR: RX:
phystat0:0x0000 phystat3:0x3140 macstat:0x01068000 chanstat:0x005D mactime:0xE2DA
b43-phy0 ERROR: RX: ieee80211_rx_status:
band:0 freq:33 signal:-22 antenna:0 rate_idx:0 flag:0x0080
b43-phy0 ERROR: RX:
phystat0:0x0020 phystat3:0xB540 macstat:0x01068000 chanstat:0x005D mactime:0x4B9B
b43-phy0 ERROR: RX: ieee80211_rx_status:
band:0 freq:33 signal:-11 antenna:1 rate_idx:0 flag:0x0080
b43-phy0 ERROR: RX:
phystat0:0x0000 phystat3:0x3140 macstat:0x01068000 chanstat:0x005D mactime:0x72D9
b43-phy0 ERROR: RX: ieee80211_rx_status:
band:0 freq:33 signal:-22 antenna:0 rate_idx:0 flag:0x0080
b43-phy0 ERROR: RX:
phystat0:0x0000 phystat3:0x3140 macstat:0x01068000 chanstat:0x005D mactime:0xDB9C
b43-phy0 ERROR: RX: ieee80211_rx_status:
band:0 freq:33 signal:2 antenna:0 rate_idx:0 flag:0x0080
b43-phy0 ERROR: RX:
phystat0:0x0000 phystat3:0x8540 macstat:0x01068000 chanstat:0x005D mactime:0x40E8
b43-phy0 ERROR: RX: ieee80211_rx_status:
band:0 freq:33 signal:-79 antenna:0 rate_idx:0 flag:0x0080
NOHZ: local_softirq_pending 08
NOHZ: local_softirq_pending 08
NOHZ: local_softirq_pending 08
No More messages after this, The device functions OK
----------------------------------------------------------
Chris Martin
m: +61 419 812 371
----------------------------------------------------------
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