Public bug reported:
Using 12.04 Server with a Realtek 8191SU wlan usb stick
Bus 002 Device 003: ID 0bda:8172 Realtek Semiconductor Corp. RTL8191SU
802.11n WLAN Adapter
Stick doesn't work, crashes if activated. Different errors, often
freezes the machine.
Got a kernel panic, too ! Here it is:
May 6 12:07:20 BlackMaster kernel: [ 5075.558917] BUG: unable to handle kernel
NULL pointer dereference at (null)
May 6 12:07:20 BlackMaster kernel: [ 5075.558926] IP: [<c11233b2>]
remove_vm_area+0x62/0x80
May 6 12:07:20 BlackMaster kernel: [ 5075.558934] *pdpt = 000000002c040001 *pde
= 0000000000000000
May 6 12:07:20 BlackMaster kernel: [ 5075.558940] Oops: 0000 [#1] SMP
May 6 12:07:20 BlackMaster kernel: [ 5075.558944] Modules linked in: bnep
rfcomm bluetooth binfmt_misc xts gf128mul snd_hda_codec_hdmi serio_raw joydev
r8712u(C) snd_hda_codec_realtek nvidia(P) mac_hid snd_hda_intel snd_hda_codec
snd_hwdep snd_pcm snd_timer snd soundcore snd_page_alloc mei(C) dm_crypt lp
parport xfs vesafb hid_logitech ff_memless usbhid hid r8169
May 6 12:07:20 BlackMaster kernel: [ 5075.558974]
May 6 12:07:20 BlackMaster kernel: [ 5075.558978] Pid: 4135, comm:
wpa_supplicant Tainted: P C O 3.2.0-24-generic-pae #37-Ubuntu Gigabyte
Technology Co., Ltd. H61M-D2-B3/H61M-D2-B3
May 6 12:07:20 BlackMaster kernel: [ 5075.558985] EIP: 0060:[<c11233b2>]
EFLAGS: 00010286 CPU: 1
May 6 12:07:20 BlackMaster kernel: [ 5075.558989] EIP is at
remove_vm_area+0x62/0x80
May 6 12:07:20 BlackMaster kernel: [ 5075.558992] EAX: 00000000 EBX: f6670bc0
ECX: 000000c2 EDX: 00000000
May 6 12:07:20 BlackMaster kernel: [ 5075.558994] ESI: f6670600 EDI: 00000000
EBP: f6773e00 ESP: f6773df8
May 6 12:07:20 BlackMaster kernel: [ 5075.558997] DS: 007b ES: 007b FS: 00d8
GS: 00e0 SS: 0068
May 6 12:07:20 BlackMaster kernel: [ 5075.559001] Process wpa_supplicant (pid:
4135, ti=f6772000 task=f1dc0ca0 task.ti=f6772000)
May 6 12:07:20 BlackMaster kernel: [ 5075.559003] Stack:
May 6 12:07:20 BlackMaster kernel: [ 5075.559005] f8aa6000 f22d44a0 f6773e24
c1123487 f6773e10 c1036458 f6773e24 f6773e1c
May 6 12:07:20 BlackMaster kernel: [ 5075.559013] f8aa6000 f22d44a0 00000000
f6773e3c c112352b f6798000 f6773e5c f8d73b0b
May 6 12:07:20 BlackMaster kernel: [ 5075.559021] c15a7f3d f6773e48 c1123589
f22d44a0 f6773e58 c138f3f4 f22d44a0 f6798480
May 6 12:07:20 BlackMaster kernel: [ 5075.559029] Call Trace:
May 6 12:07:20 BlackMaster kernel: [ 5075.559035] [<c1123487>]
__vunmap.part.27+0x17/0xa0
May 6 12:07:20 BlackMaster kernel: [ 5075.559041] [<c1036458>] ?
default_spin_lock_flags+0x8/0x10
May 6 12:07:20 BlackMaster kernel: [ 5075.559046] [<c112352b>]
__vunmap+0x1b/0x50
May 6 12:07:20 BlackMaster kernel: [ 5075.559057] [<f8d73b0b>] ?
_free_network_queue+0xab/0xc0 [r8712u]
May 6 12:07:20 BlackMaster kernel: [ 5075.559064] [<c15a7f3d>] ?
_raw_spin_lock_irqsave+0x2d/0x40
May 6 12:07:20 BlackMaster kernel: [ 5075.559068] [<c1123589>] vunmap+0x29/0x30
May 6 12:07:20 BlackMaster kernel: [ 5075.559073] [<c138f3f4>]
firmware_free_data+0x14/0x60
May 6 12:07:20 BlackMaster kernel: [ 5075.559077] [<c138f47e>]
release_firmware+0x3e/0x50
May 6 12:07:20 BlackMaster kernel: [ 5075.559086] [<f8d7abd5>]
netdev_close+0x65/0xb0 [r8712u]
May 6 12:07:20 BlackMaster kernel: [ 5075.559091] [<c14a8209>]
__dev_close_many+0x69/0xb0
May 6 12:07:20 BlackMaster kernel: [ 5075.559094] [<c14a8274>]
__dev_close+0x24/0x40
May 6 12:07:20 BlackMaster kernel: [ 5075.559099] [<c14adb62>]
__dev_change_flags+0x82/0x150
May 6 12:07:20 BlackMaster kernel: [ 5075.559103] [<c14adcd1>]
dev_change_flags+0x21/0x60
May 6 12:07:20 BlackMaster kernel: [ 5075.559108] [<c1504f6c>]
devinet_ioctl+0x4dc/0x640
May 6 12:07:20 BlackMaster kernel: [ 5075.559112] [<c14ae26e>] ?
dev_ioctl+0x1de/0x2f0
May 6 12:07:20 BlackMaster kernel: [ 5075.559116] [<c150551d>]
inet_ioctl+0x8d/0xb0
May 6 12:07:20 BlackMaster kernel: [ 5075.559122] [<c149887d>]
sock_ioctl+0x6d/0x290
May 6 12:07:20 BlackMaster kernel: [ 5075.559126] [<c1498810>] ?
move_addr_to_user+0x90/0x90
May 6 12:07:20 BlackMaster kernel: [ 5075.559131] [<c1154869>]
do_vfs_ioctl+0x79/0x2d0
May 6 12:07:20 BlackMaster kernel: [ 5075.559135] [<c1145b8d>] ? fput+0x1d/0x30
May 6 12:07:20 BlackMaster kernel: [ 5075.559139] [<c1154b2f>]
sys_ioctl+0x6f/0x80
May 6 12:07:20 BlackMaster kernel: [ 5075.559144] [<c1142a43>] ?
sys_close+0x73/0xc0
May 6 12:07:20 BlackMaster kernel: [ 5075.559149] [<c15af11f>]
sysenter_do_call+0x12/0x28
May 6 12:07:20 BlackMaster kernel: [ 5075.559151] Code: 81 6b 08 00 10 00 00 89
d8 5b 5e 5d c3 8d 74 26 00 b8 bc 57 82 c1 e8 ee 49 48 00 a1 e4 86 9f c1 ba e4
86 9f c1 39 c3 74 08 89 c2 <8b> 00 39 c3 75 f8 8b 00 89 02 f0 81 05 bc 57 82 c1
00 00 10 00
May 6 12:07:20 BlackMaster kernel: [ 5075.559199] EIP: [<c11233b2>]
remove_vm_area+0x62/0x80 SS:ESP 0068:f6773df8
May 6 12:07:20 BlackMaster kernel: [ 5075.559205] CR2: 0000000000000000
May 6 12:07:20 BlackMaster kernel: [ 5075.559208] ---[ end trace
fad2a23c17ddc8a1 ]---
** Affects: linux-firmware (Ubuntu)
Importance: Undecided
Status: New
** Tags: r8712u realtek rtlwifi wlan wpasupplicant
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https://bugs.launchpad.net/bugs/995835
Title:
r8712u crashes / unstable
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