I have a awus036h (Alfa) wireless usb adapter, which uses the rtl8187
driver. I am trying to get it to work with a raspberry pi running
Linux 4.0.7-v7+. It sometimes works for some time, but will always
eventually crash, bringing the whole network down. I already upgraded
from 3.18, where I had the same issue. I also tested it by connecting
it to a Linux vm in VMware Fusion running Ubuntu 15.04 with kernel
3.19.0-21 and got the same Oops, so it is not a problem just confined
to the raspberry or the arm architecture.
pi@raspberrypi ~ $ uname -a
Linux raspberrypi 4.0.7-v7+ #802 SMP PREEMPT Wed Jul 8 18:01:25 BST
2015 armv7l GNU/Linux
vmware@ubuntu:~$ lsusb
Bus 001 Device 021: ID 0bda:8187 Realtek Semiconductor Corp. RTL8187
Wireless Adapter
...
Jul 11 06:00:23 raspberrypi kernel: [ 41.746641] Internal error:
Oops: 817 [#1] PREEMPT SMP ARM
Jul 11 06:00:23 raspberrypi kernel: [ 41.753311] Modules linked in:
xt_state iptable_filter ipt_MASQUERADE nf_nat_masquerade_ipv4
iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat
nf_connt
rack ip_tables x_tables snd_bcm2835 snd_pcm snd_seq snd_seq_device
snd_timer snd arc4 rtl8187 eeprom_93cx6 mac80211 cfg80211 rfkill
8192cu uio_pdrv_genirq uio
Jul 11 06:00:23 raspberrypi kernel: [ 41.788246] CPU: 0 PID: 1563
Comm: wpa_supplicant Not tainted 4.0.7-v7+ #802
Jul 11 06:00:23 raspberrypi kernel: [ 41.797857] Hardware name: BCM2709
Jul 11 06:00:23 raspberrypi kernel: [ 41.802538] task: b8534200 ti:
b8420000 task.ti: b8420000
Jul 11 06:00:23 raspberrypi kernel: [ 41.809255] PC is at
__mutex_lock_slowpath+0xb8/0x180
Jul 11 06:00:23 raspberrypi kernel: [ 41.815624] LR is at
__mutex_lock_slowpath+0x90/0x180
Jul 11 06:00:23 raspberrypi kernel: [ 41.821967] pc : [<80549e24>]
lr : [<80549dfc>] psr: a0000013
Jul 11 06:00:23 raspberrypi kernel: [ 41.821967] sp : b8421ce8 ip :
b8421ce8 fp : b8421d1c
Jul 11 06:00:23 raspberrypi kernel: [ 41.836034] r10: 00000001 r9 :
b853f034 r8 : 00000000
Jul 11 06:00:23 raspberrypi kernel: [ 41.842516] r7 : b8534200 r6 :
ffffffff r5 : b853f030 r4 : b853f02c
Jul 11 06:00:23 raspberrypi kernel: [ 41.850299] r3 : 00000000 r2 :
b8421cec r1 : 00000000 r0 : b853f030
Jul 11 06:00:23 raspberrypi kernel: [ 41.858086] Flags: NzCv IRQs
on FIQs on Mode SVC_32 ISA ARM Segment user
Jul 11 06:00:23 raspberrypi kernel: [ 41.867723] Control: 10c5387d
Table: 3851c06a DAC: 00000015
Jul 11 06:00:23 raspberrypi kernel: [ 41.874731] Process
wpa_supplicant (pid: 1563, stack limit = 0xb8420210)
Jul 11 06:00:23 raspberrypi kernel: [ 41.883970] Stack: (0xb8421ce8
to 0xb8422000)
Jul 11 06:00:23 raspberrypi kernel: [ 41.889608] 1ce0:
b75af4c8 b853f034 00000000 b8421d00 b853f02c b75af4c8
Jul 11 06:00:23 raspberrypi kernel: [ 41.900320] 1d00: b75af000
b75af02c 00000000 b92c1200 b8421d34 b8421d20 80549f48 80549d78
Jul 11 06:00:23 raspberrypi kernel: [ 41.911022] 1d20: 7f203fb8
b853e340 b8421d94 b8421d38 7f203fec 80549ef8 b8421d94 b8421d48
Jul 11 06:00:23 raspberrypi kernel: [ 41.921726] 1d40: b8421dbc
b8421d50 7f182db8 7f182e28 b8534200 00000000 b853f02c b853e340
Jul 11 06:00:23 raspberrypi kernel: [ 41.932459] 1d60: b853f020
00000000 00000001 b853e340 b75af4c8 b75af000 b75af02c 00000000
Jul 11 06:00:23 raspberrypi kernel: [ 41.943281] 1d80: b92c1200
00000001 b8421ddc b8421d98 7f164c6c 7f203fc4 00000002 b853ee34
Jul 11 06:00:23 raspberrypi kernel: [ 41.954242] 1da0: b75af02c
00000000 b92c1200 7f16274c b8421ddc b75af4c0 7f1aa7ec 00000001
Jul 11 06:00:23 raspberrypi kernel: [ 41.965277] 1dc0: b75af02c
00000000 b92c1200 00008914 b8421df4 b8421de0 7f165bd0 7f164bd4
Jul 11 06:00:23 raspberrypi kernel: [ 41.976400] 1de0: 7f165b6c
b75af000 b8421e1c b8421df8 8047129c 7f165b78 b8421e1c b75af000
Jul 11 06:00:23 raspberrypi kernel: [ 41.987569] 1e00: b75af000
00001003 00000001 00001002 b8421e44 b8421e20 80471584 804711e0
Jul 11 06:00:23 raspberrypi kernel: [ 41.998767] 1e20: 00008914
b75af000 00000140 00001002 00000001 00000000 b8421e6c b8421e48
Jul 11 06:00:23 raspberrypi kernel: [ 42.009995] 1e40: 8047167c
804714f8 00008914 00000000 b92c120c 00000000 00000001 00000000
Jul 11 06:00:23 raspberrypi kernel: [ 42.021278] 1e60: b8421ed4
b8421e70 804dc004 80471660 00000020 00000000 b75af000 b92c120c
Jul 11 06:00:23 raspberrypi kernel: [ 42.032577] 1e80: 00000014
7eb83a3c 6e616c77 00000031 00000000 00000000 00001003 00000000
Jul 11 06:00:23 raspberrypi kernel: [ 42.043875] 1ea0: 00000000
00000000 00001002 00008914 b91dde40 7eb83a3c 80838cc0 00000006
Jul 11 06:00:23 raspberrypi kernel: [ 42.055171] 1ec0: 7eb83a3c
b964c4a0 b8421ee4 b8421ed8 804dd8f4 804db968 b8421f04 b8421ee8
Jul 11 06:00:23 raspberrypi kernel: [ 42.066467] 1ee0: 804531e0
804dd75c b91dde40 b91dde40 00000006 7eb83a3c b8421f7c b8421f08
Jul 11 06:00:23 raspberrypi kernel: [ 42.077764] 1f00: 80150f34
80453014 b8421f24 b8421f18 8015b4bc 7eb83904 b964c300 00000000
Jul 11 06:00:23 raspberrypi kernel: [ 42.089064] 1f20: 00000129
8000ed48 b8420000 00000000 b8421f94 b8421f40 80455ab4 80454b74
Jul 11 06:00:23 raspberrypi kernel: [ 42.100366] 1f40: 00000000
00000000 00000000 00000024 b8421e90 b91dde40 b91dde40 00008914
Jul 11 06:00:23 raspberrypi kernel: [ 42.111669] 1f60: 7eb83a3c
00000006 b8420000 00000000 b8421fa4 b8421f80 80151170 80150b20
Jul 11 06:00:23 raspberrypi kernel: [ 42.122971] 1f80: 00001003
000cfae8 00ad48bc 00000006 00000036 8000ed48 00000000 b8421fa8
Jul 11 06:00:23 raspberrypi kernel: [ 42.134274] 1fa0: 8000eb40
80151138 000cfae8 00ad48bc 00000006 00008914 7eb83a3c 00001003
Jul 11 06:00:23 raspberrypi kernel: [ 42.145578] 1fc0: 000cfae8
00ad48bc 00000006 00000036 00000001 000cfae8 7eb83b2c 7eb83b18
Jul 11 06:00:23 raspberrypi kernel: [ 42.156879] 1fe0: 00ad48bc
7eb83a38 00093fe8 76c81dcc 60000010 00000006 00000000 00000000
Jul 11 06:00:23 raspberrypi kernel: [ 42.168192] [<80549e24>]
(__mutex_lock_slowpath) from [<80549f48>] (mutex_lock+0x5c/0x60)
Jul 11 06:00:23 raspberrypi kernel: [ 42.179509] [<80549f48>]
(mutex_lock) from [<7f203fec>] (rtl8187_start+0x34/0x2ac8 [rtl8187])
Jul 11 06:00:23 raspberrypi kernel: [ 42.191240] [<7f203fec>]
(rtl8187_start [rtl8187]) from [<7f164c6c>]
(ieee80211_do_open+0xa4/0xfa4 [mac80211])
Jul 11 06:00:23 raspberrypi kernel: [ 42.204496] [<7f164c6c>]
(ieee80211_do_open [mac80211]) from [<7f165bd0>]
(ieee80211_open+0x64/0x68 [mac80211])
Jul 11 06:00:23 raspberrypi kernel: [ 42.217785] [<7f165bd0>]
(ieee80211_open [mac80211]) from [<8047129c>] (__dev_open+0xc8/0x140)
Jul 11 06:00:23 raspberrypi kernel: [ 42.229519] [<8047129c>]
(__dev_open) from [<80471584>] (__dev_change_flags+0x98/0x168)
Jul 11 06:00:23 raspberrypi kernel: [ 42.240637] [<80471584>]
(__dev_change_flags) from [<8047167c>] (dev_change_flags+0x28/0x58)
Jul 11 06:00:23 raspberrypi kernel: [ 42.252184] [<8047167c>]
(dev_change_flags) from [<804dc004>] (devinet_ioctl+0x6a8/0x778)
Jul 11 06:00:23 raspberrypi kernel: [ 42.263467] [<804dc004>]
(devinet_ioctl) from [<804dd8f4>] (inet_ioctl+0x1a4/0x1d0)
Jul 11 06:00:23 raspberrypi kernel: [ 42.274223] [<804dd8f4>]
(inet_ioctl) from [<804531e0>] (sock_ioctl+0x1d8/0x2a4)
Jul 11 06:00:23 raspberrypi kernel: [ 42.284716] [<804531e0>]
(sock_ioctl) from [<80150f34>] (do_vfs_ioctl+0x420/0x618)
Jul 11 06:00:23 raspberrypi kernel: [ 42.295386] [<80150f34>]
(do_vfs_ioctl) from [<80151170>] (SyS_ioctl+0x44/0x6c)
Jul 11 06:00:23 raspberrypi kernel: [ 42.305796] [<80151170>]
(SyS_ioctl) from [<8000eb40>] (ret_fast_syscall+0x0/0x54)
Jul 11 06:00:23 raspberrypi kernel: [ 42.316465] Code: e50b302c
e50b9030 e584200c e3e06000 (e5832000)
Jul 11 06:00:23 raspberrypi kernel: [ 42.324397] ---[ end trace
1a4b1708ecea66b7 ]---
Jul 11 06:00:23 raspberrypi kernel: [ 42.330670] note:
wpa_supplicant[1563] exited with preempt_count 2
On 07/12/2015 12:41 PM, Oliver Kurth wrote:
> I have a awus036h (Alfa) wireless usb adapter, which uses the rtl8187
> driver. I am trying to get it to work with a raspberry pi running
> Linux 4.0.7-v7+. It sometimes works for some time, but will always
> eventually crash, bringing the whole network down. I already upgraded
> from 3.18, where I had the same issue. I also tested it by connecting
> it to a Linux vm in VMware Fusion running Ubuntu 15.04 with kernel
> 3.19.0-21 and got the same Oops, so it is not a problem just confined
> to the raspberry or the arm architecture.
What was the architecture of the host machine that was running that Ubuntu VM?
Where are you getting driver 8192cu that is shown in the module list below. If
you were using the one that has been built into the kernel since 2008, it would
be named rtl8187. I have used that driver extensively on x86 and x86_64
architectures, both in x86 hosts and VirtualBox VMs and I have never seen this
problem.
--snip--
> Oops: 817 [#1] PREEMPT SMP ARM
> Jul 11 06:00:23 raspberrypi kernel: [ 41.753311] Modules linked in:
> xt_state iptable_filter ipt_MASQUERADE nf_nat_masquerade_ipv4
> iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat
> nf_connt
> rack ip_tables x_tables snd_bcm2835 snd_pcm snd_seq snd_seq_device
> snd_timer snd arc4 rtl8187 eeprom_93cx6 mac80211 cfg80211 rfkill
> 8192cu uio_pdrv_genirq uio
Larry