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Date:      Fri, 26 Jul 2013 11:23:03 +0800
From:      XiaoQI Ge <ghw@7axu.com>
To:        freebsd-arm <freebsd-arm@freebsd.org>
Cc:        freebsd-wireless@freebsd.org
Subject:   Re: My WLI-UC-GNM up crash
Message-ID:  <CAKrd9eW-HUqUTRkaeeC0jaeRjrgRmVhXVfiG0b_0tvgXLuTteg@mail.gmail.com>
In-Reply-To: <CAKrd9eXJH6VQPBTLCayat47Dch8BWmhz3gzYtcSv-6unHb8QMQ@mail.gmail.com>
References:  <cakrd9exvuqeqz=3ntmh7k3e4_6fjw9jph_tpfchujhqhwwbzsg@mail.gmail.com> <1374573600-2351360719.d37ada5f86@bliksem.vehosting.nl> <CAKrd9eXHXmM5_ai0=kV4Sd8U3Fej8FkKp7XXcbppxeBVDHB3Pg@mail.gmail.com> <201307231220.52817.Daan@vitsch.nl> <CAKrd9eXPB2-cAySVSGm-BJHPU9L65fm6rynMpCnNQ-M_B9zMMw@mail.gmail.com> <CAKrd9eWsfgd9EZytBOrxBYyeTaNjPhFO6O5qv-K4ODf9bSDvVw@mail.gmail.com> <CAKrd9eXJH6VQPBTLCayat47Dch8BWmhz3gzYtcSv-6unHb8QMQ@mail.gmail.com>

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=E6=88=91=E6=9B=B4=E6=96=B0=E5=88=B0=E6=9C=80=E6=96=B0=E7=9A=84=E6=BA=90=E7=
=A0=81=EF=BC=88r253662=EF=BC=89=EF=BC=8C=E8=BF=99=E6=AC=A1=E9=94=99=E8=AF=
=AF=E4=BF=A1=E6=81=AF=E5=8F=98=E6=88=90=E4=BA=860xde9f4d34

[root@FreeBSD.ttyu0] ~ # Fatal kernel mode data abort: 'Alignment Fault 1'
trapframe: 0xde9f4d34
FSR=3D00000801, FAR=3Dc284afbb, spsr=3D00000013
r0 =3Dc284c000, r1 =3Dc284afbb, r2 =3Dc284c210, r3 =3D0000096c
r4 =3Dc284c024, r5 =3Dc05f07c5, r6 =3D00000014, r7 =3Dc2844800
r8 =3Dc05f07c5, r9 =3Dc284c000, r10=3D000035cb, r11=3Dde9f4e10
r12=3D0000002e, ssp=3Dde9f4d80, slr=3D00000000, pc =3Dc046d20c

[ 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=3Darmv6 TARGET_CPUTYPE=3Darmv6 KERNCONF=3DBBB WITH_FDT=3Dy=
es
buildkernel
--
Regards.
By: XiaoQI Ge; PGP:8B09D5F7
WWW: https://www.7axu.com/



2013/7/24 XiaoQI Ge <ghw@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@FreeBSD.ttyu0] ~ # ifconfig wlan create wlandev run0
> wlan0: Ethernet address: 10:6f:3f:2b:fd:6d
> wlan0
> [root@FreeBSD.ttyu0] ~ # ifconfig wlan0 up
> run0: firmware RT2870 ver. 0.236 loaded
> Fatal kernel mode data abort: 'Alignment Fault 1'
> trapframe: 0xde9e4d5c
> FSR=3D00000801, FAR=3Dc282ffbb, spsr=3D00000013
> r0 =3Dc2831000, r1 =3Dc282ffbb, r2 =3Dc2831210, r3 =3D0000096c
> r4 =3Dc2831024, r5 =3Dc2831000, r6 =3Dc05d9362, r7 =3Dc2829800
> r8 =3D00000014, r9 =3Dc08144d8, r10=3D80001cce, r11=3Dde9e4e10
> r12=3D0000002e, ssp=3Dde9e4da8, slr=3D00000000, pc =3Dc045c510
>
> [ thread pid 0 tid 100053 ]
> Stopped at      ieee80211_radiotap_chan_change+0x90:    strh    r3, [r1]
> db>
>
>
> These two places modified:
> 2522     }
> 2523
> 2524     ant =3D run_maxrssi_chain(sc, rxwi);
> 2525     rssi =3D rxwi->rssi[ant];
> 2526     nf =3D run_rssi2dbm(sc, rssi, ant);
> 2527
> 2528     m->m_pkthdr.rcvif =3D ifp;
> 2529     m->m_pkthdr.len =3D m->m_len =3D len;
> 2530 /*
> 2531     if (ni !=3D 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 =3D &sc->sc_rxtap;
> 2544
> 2545         tap->wr_flags =3D 0;
> 2546         tap->wr_chan_freq =3D htole16(ic->ic_curchan->ic_freq);
> 2547         tap->wr_chan_flags =3D htole16(ic->ic_curchan->ic_flags);
> 2548         tap->wr_antsignal =3D rssi;
> 2549         tap->wr_antenna =3D ant;
> 2550         tap->wr_dbm_antsignal =3D run_rssi2dbm(sc, rssi, ant);
> 2551         tap->wr_rate =3D 2;   /* in case it can't be found below */
> 2552         phy =3D 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 =3D   2; break;
> 2557             case 1: tap->wr_rate =3D   4; break;
> 2558             case 2: tap->wr_rate =3D  11; break;
> 2559             case 3: tap->wr_rate =3D  22; break;
> 2560             }
> 2561             if (phy & RT2860_PHY_SHPRE)
> 2562                 tap->wr_flags |=3D IEEE80211_RADIOTAP_F_SHORTPRE;
> 2563             break;
> 2564         case RT2860_PHY_OFDM:
> 2565             switch (phy & RT2860_PHY_MCS) {
> 2566             case 0: tap->wr_rate =3D  12; break;
> 2567             case 1: tap->wr_rate =3D  18; break;
> 2568             case 2: tap->wr_rate =3D  24; break;
> 2569             case 3: tap->wr_rate =3D  36; break;
> 2570             case 4: tap->wr_rate =3D  48; break;
> 2571             case 5: tap->wr_rate =3D  72; break;
> 2572             case 6: tap->wr_rate =3D  96; break;
> 2573             case 7: tap->wr_rate =3D 108; break;
> 2574             }
> 2575             break;
> 2576         }
> 2577     }
> 2578
> 2579     if (ni !=3D 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
> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
> --- sys/vm/vm_map.c     (revision 253514)
> +++ sys/vm/vm_map.c     (working copy)
> @@ -239,8 +239,7 @@
>         vm_map_t map;
>
>         map =3D (vm_map_t)mem;
> -       map->nentries =3D 0;
> -       map->size =3D 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@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@7axu.com>:
>>>  patch < /root/if_run_2013_01_19_radiotap_fix_only.diff appears to be i=
nvalid
>>>
>>> ] /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@vitsch.nl>:
>>>> cd /usr/src/sys/dev/usb/wlan
>>>
>>>
>>>
>>> --
>>> Regards.
>>> By: XiaoQI Ge; PGP:8B09D5F7
>>> WWW: https://www.7axu.com/



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