My WLI-UC-GNM up crash
Adrian Chadd
adrian at freebsd.org
Sat Jul 27 15:27:44 UTC 2013
This is known; there's some alignment issue with the radiotap TX/RX
structures in some of these USB devices.
-adrain
On 25 July 2013 20:23, XiaoQI Ge <ghw at 7axu.com> wrote:
> 我更新到最新的源码（r253662），这次错误信息变成了0xde9f4d34
>
> [root at FreeBSD.ttyu0] ~ # Fatal kernel mode data abort: 'Alignment Fault 1'
> trapframe: 0xde9f4d34
> FSR=00000801, FAR=c284afbb, spsr=00000013
> r0 =c284c000, r1 =c284afbb, r2 =c284c210, r3 =0000096c
> r4 =c284c024, r5 =c05f07c5, r6 =00000014, r7 =c2844800
> r8 =c05f07c5, r9 =c284c000, r10=000035cb, r11=de9f4e10
> r12=0000002e, ssp=de9f4d80, slr=00000000, pc =c046d20c
>
> [ thread pid 0 tid 100053 ]
> Stopped at ieee80211_radiotap_chan_change+0x90: strh r3, [r1]
> db>
> ---
> Kernel wlan related options
> device wlan # 802.11 support
> options IEEE80211_DEBUG # enable debug msgs
> options IEEE80211_AMPDU_AGE # age frames in AMPDU reorder q's
> options IEEE80211_SUPPORT_MESH # enable 802.11s draft support
> device wlan_wep # 802.11 WEP support
> device wlan_ccmp # 802.11 CCMP support
> device wlan_tkip # 802.11 TKIP support
> device wlan_amrr # AMRR transmit rate control algorithm
> device firmware # firmware assist module
> device run #Ralink Technology USB IEEE 802.11a/g/n
> wireless network device
> device runfw #Firmware Module for Ralink driver
>
> ---
> The compiler command
> make TARGET_ARCH=armv6 TARGET_CPUTYPE=armv6 KERNCONF=BBB WITH_FDT=yes
> buildkernel
> --
> Regards.
> By: XiaoQI Ge; PGP:8B09D5F7
> WWW: https://www.7axu.com/
>
>
>
> 2013/7/24 XiaoQI Ge <ghw at 7axu.com>:
>> How do I debug it? Can provide useful information
>>
>> login: root
>> Jul 24 18:27:31 FreeBSD login: ROOT LOGIN (root) ON ttyu0
>> FreeBSD 10.0-CURRENT (BBB) #4 r253585M: Wed Jul 24 17:07:53 CST 2013
>> [root at FreeBSD.ttyu0] ~ # ifconfig wlan create wlandev run0
>> wlan0: Ethernet address: 10:6f:3f:2b:fd:6d
>> wlan0
>> [root at FreeBSD.ttyu0] ~ # ifconfig wlan0 up
>> run0: firmware RT2870 ver. 0.236 loaded
>> Fatal kernel mode data abort: 'Alignment Fault 1'
>> trapframe: 0xde9e4d5c
>> FSR=00000801, FAR=c282ffbb, spsr=00000013
>> r0 =c2831000, r1 =c282ffbb, r2 =c2831210, r3 =0000096c
>> r4 =c2831024, r5 =c2831000, r6 =c05d9362, r7 =c2829800
>> r8 =00000014, r9 =c08144d8, r10=80001cce, r11=de9e4e10
>> r12=0000002e, ssp=de9e4da8, slr=00000000, pc =c045c510
>>
>> [ thread pid 0 tid 100053 ]
>> Stopped at ieee80211_radiotap_chan_change+0x90: strh r3, [r1]
>> db>
>>
>>
>> These two places modified:
>> 2522 }
>> 2523
>> 2524 ant = run_maxrssi_chain(sc, rxwi);
>> 2525 rssi = rxwi->rssi[ant];
>> 2526 nf = run_rssi2dbm(sc, rssi, ant);
>> 2527
>> 2528 m->m_pkthdr.rcvif = ifp;
>> 2529 m->m_pkthdr.len = m->m_len = len;
>> 2530 /*
>> 2531 if (ni != NULL) {
>> 2532 (void)ieee80211_input(ni, m, rssi, nf);
>> 2533 ieee80211_free_node(ni);
>> 2534 } else {
>> 2535 (void)ieee80211_input_all(ic, m, rssi, nf);
>> 2536 }
>> 2537 */
>> 2538 /*
>> 2539 * DAAN: fill-in tap header BEFORE calling ieee80211_input*() so the
>> 2540 * user will see the actual data that belongs to THIS packet..
>> 2541 */
>> 2542 if (__predict_false(ieee80211_radiotap_active(ic))) {
>> 2543 struct run_rx_radiotap_header *tap = &sc->sc_rxtap;
>> 2544
>> 2545 tap->wr_flags = 0;
>> 2546 tap->wr_chan_freq = htole16(ic->ic_curchan->ic_freq);
>> 2547 tap->wr_chan_flags = htole16(ic->ic_curchan->ic_flags);
>> 2548 tap->wr_antsignal = rssi;
>> 2549 tap->wr_antenna = ant;
>> 2550 tap->wr_dbm_antsignal = run_rssi2dbm(sc, rssi, ant);
>> 2551 tap->wr_rate = 2; /* in case it can't be found below */
>> 2552 phy = le16toh(rxwi->phy);
>> 2553 switch (phy & RT2860_PHY_MODE) {
>> 2554 case RT2860_PHY_CCK:
>> 2555 switch ((phy & RT2860_PHY_MCS) & ~RT2860_PHY_SHPRE) {
>> 2556 case 0: tap->wr_rate = 2; break;
>> 2557 case 1: tap->wr_rate = 4; break;
>> 2558 case 2: tap->wr_rate = 11; break;
>> 2559 case 3: tap->wr_rate = 22; break;
>> 2560 }
>> 2561 if (phy & RT2860_PHY_SHPRE)
>> 2562 tap->wr_flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
>> 2563 break;
>> 2564 case RT2860_PHY_OFDM:
>> 2565 switch (phy & RT2860_PHY_MCS) {
>> 2566 case 0: tap->wr_rate = 12; break;
>> 2567 case 1: tap->wr_rate = 18; break;
>> 2568 case 2: tap->wr_rate = 24; break;
>> 2569 case 3: tap->wr_rate = 36; break;
>> 2570 case 4: tap->wr_rate = 48; break;
>> 2571 case 5: tap->wr_rate = 72; break;
>> 2572 case 6: tap->wr_rate = 96; break;
>> 2573 case 7: tap->wr_rate = 108; break;
>> 2574 }
>> 2575 break;
>> 2576 }
>> 2577 }
>> 2578
>> 2579 if (ni != NULL) {
>> 2580 (void)ieee80211_input(ni, m, rssi, nf);
>> 2581 ieee80211_free_node(ni);
>> 2582 } else {
>> 2583 (void)ieee80211_input_all(ic, m, rssi, nf);
>> 2584 }
>> 2585
>> 2586 }
>> 2587
>> 2588 static void
>>
>>
>> Index: sys/vm/vm_map.c
>> ===================================================================
>> --- sys/vm/vm_map.c (revision 253514)
>> +++ sys/vm/vm_map.c (working copy)
>> @@ -239,8 +239,7 @@
>> vm_map_t map;
>>
>> map = (vm_map_t)mem;
>> - map->nentries = 0;
>> - map->size = 0;
>> + memset(map, 0, sizeof(*map));
>> mtx_init(&map->system_mtx, "vm map (system)", NULL, MTX_DEF |
>> MTX_DUPOK);
>> sx_init(&map->lock, "vm map (user)");
>> return (0);
>>
>> --
>> Regards.
>> By: XiaoQI Ge; PGP:8B09D5F7
>> WWW: https://www.7axu.com/
>>
>>
>>
>> 2013/7/24 XiaoQI Ge <ghw at 7axu.com>:
>>> I manually make up, is compiling the kernel
>>> --
>>> Regards.
>>> By: XiaoQI Ge; PGP:8B09D5F7
>>> WWW: https://www.7axu.com/
>>>
>>>
>>>
>>> 2013/7/24 XiaoQI Ge <ghw at 7axu.com>:
>>>> patch < /root/if_run_2013_01_19_radiotap_fix_only.diff appears to be invalid
>>>>
>>>> ] /usr/src/sys/dev/usb/wlan # patch <
>>>> /root/if_run_2013_01_19_radiotap_fix_only.diff
>>>> Hmm... Looks like a unified diff to me...
>>>> The text leading up to this was:
>>>> --------------------------
>>>> |--- if_run.c.fix1_vnet 2013-06-14 10:12:49.786774072 +0200
>>>> |+++ if_run.c.fix2_vnet_plus_radiotap 2013-06-14 10:15:34.890774314 +0200
>>>> --------------------------
>>>> File to patch:
>>>>
>>>>
>>>> 2013/7/23 Daan Vreeken <Daan at vitsch.nl>:
>>>>> cd /usr/src/sys/dev/usb/wlan
>>>>
>>>>
>>>>
>>>> --
>>>> Regards.
>>>> By: XiaoQI Ge; PGP:8B09D5F7
>>>> WWW: https://www.7axu.com/
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