iwconfig crashes computer

[Oscar Tiderman]

Everytime I try to run 'sudo iwconfig' the pc just crashes and hangs with caps lock light flashing, I believe this is a kernel krash. /var/log/syslog contains no traces of the crash. I have seen several reports for this behaviour on Mac, and I believe they are also on Broadcom drivers, so that is probably the lowest common denominator.

$sudo lshw -C net
  *-network
       description: Ethernet interface
       product: AR8151 v1.0 Gigabit Ethernet
       vendor: Qualcomm Atheros
       physical id: 0
       bus info: pci@0000:01:00.0
       logical name: eth0
       version: c0
       serial: 20:6a:8a:02:31:cf
       capacity: 1Gbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress vpd bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=atl1c driverversion=1.0.1.1-NAPI latency=0 link=no multicast=yes port=twisted pair
       resources: irq:44 memory:d3400000-d343ffff ioport:2000(size=128)
  *-network
       description: Wireless interface
       product: BCM43225 802.11b/g/n
       vendor: Broadcom Corporation
       physical id: 0
       bus info: pci@0000:02:00.0
       logical name: eth1
       version: 01
       serial: c4:46:19:51:bc:fb
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=wl0 driverversion=6.20.155.1 (r326264) ip=192.168.0.44 latency=0 multicast=yes wireless=IEEE 802.11abg
       resources: irq:17 memory:d2400000-d2403fff

ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: wireless-tools 30~pre9-8ubuntu1
ProcVersionSignature: Ubuntu 3.8.0-29.42-generic 3.8.13.5
Uname: Linux 3.8.0-29-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.9.2-0ubuntu8.3
Architecture: amd64
Date: Fri Aug 30 09:55:54 2013
EcryptfsInUse: Yes
InstallationDate: Installed on 2012-11-22 (280 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
MarkForUpload: True
SourcePackage: wireless-tools
UpgradeStatus: Upgraded to raring on 2013-04-30 (121 days ago)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Yuriy (shein-f)]

This bug also affects me.
Each time I do "sudo iwconfig" system crashes.

sudo lshw -C net
  *-network
       description: Ethernet interface
       product: RTL8111/8168 PCI Express Gigabit Ethernet controller
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:07:00.0
       logical name: eth0
       version: 07
       serial: d4:be:d9:54:59:b9
       size: 10Mbit/s
       capacity: 1Gbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half firmware=rtl8168e-3_0.0.4 03/27/12 latency=0 link=no multicast=yes port=MII speed=10Mbit/s
       resources: irq:43 ioport:3000(size=256) memory:c3404000-c3404fff memory:c3400000-c3403fff
  *-network
       description: Wireless interface
       product: BCM43142 802.11b/g/n
       vendor: Broadcom Corporation
       physical id: 0
       bus info: pci@0000:08:00.0
       logical name: eth1
       version: 01
       serial: c0:18:85:c4:c3:0b
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=wl0 driverversion=6.20.155.1 (r326264) ip=192.168.43.151 latency=0 multicast=yes wireless=IEEE 802.11abg
       resources: irq:17 memory:c3500000-c3507fff

[Yuriy (shein-f)]

[ 96.435766] general protection fault: 0000 [#1] SMP
[ 96.435827] Modules linked in: pci_stub vboxpci(OF) vboxnetadp(OF) vboxnetflt(OF) vboxdrv(OF) i8k joydev(F) parport_pc(F) ppdev(F) bnep rfcomm snd_hda_codec_hdmi snd_hda_codec_conexant binfmt_misc(F) nls_iso8859_1(F) coretemp kvm_intel(F) kvm(F) ghash_clmulni_intel(F) aesni_intel(F) aes_x86_64(F) xts(F) lrw(F) gf128mul(F) ablk_helper(F) cryptd(F) dell_wmi sparse_keymap rts5139(C) btusb bluetooth uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core videodev dell_laptop dcdbas snd_hda_intel snd_hda_codec snd_hwdep(F) lib80211_crypt_tkip snd_pcm(F) snd_page_alloc(F) snd_seq_midi(F) snd_seq_midi_event(F) snd_rawmidi(F) radeon microcode(F) snd_seq(F) wl(POF) i915 snd_seq_device(F) lib80211 snd_timer(F) cfg80211 snd(F) psmouse(F) serio_raw(F) ttm drm_kms_helper lpc_ich drm i2c_algo_bit soundcore(F) mei wmi video(F) mac_hid lp(F) parport(F) hid_generic usbhid hid ahci(F) libahci(F) r8169
[ 96.436718] CPU 1
[ 96.436742] Pid: 2965, comm: iwconfig Tainted: PF C O 3.8.0-32-generic #47-Ubuntu Dell Inc. Vostro 3560/0C05GV
[ 96.436833] RIP: 0010:[<ffffffff8169d4e1>] [<ffffffff8169d4e1>] wireless_process_ioctl+0x91/0x1b0
[ 96.436920] RSP: 0018:ffff880221a75d80 EFLAGS: 00010202
[ 96.436961] RAX: ffff88025340f000 RBX: 0000000000008b09 RCX: 36df1f21adcfdb16
[ 96.437017] RDX: 36df1f21adcfdb16 RSI: ffff880221a75e20 RDI: ffff88025340f000
[ 96.437077] RBP: ffff880221a75da8 R08: 0000000000000000 R09: ffffffff8169ecb0
[ 96.437138] R10: 0000000000000011 R11: 0000000000000246 R12: ffffffff8169ecb0
[ 96.437198] R13: ffffffff8169e020 R14: ffff880221a75dbc R15: ffff880221a75e20
[ 96.437260] FS: 00007f9419a34740(0000) GS:ffff88025f240000(0000) knlGS:0000000000000000
[ 96.437328] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 96.437378] CR2: 00007f9419630073 CR3: 00000002366a4000 CR4: 00000000001407e0
[ 96.437438] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 96.437499] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[ 96.437560] Process iwconfig (pid: 2965, threadinfo ffff880221a74000, task ffff8802212e5d00)
[ 96.437630] Stack:
[ 96.437650] 0000000000000000 0000000000008b09 ffff880221a75e20 ffffffff81cbb180
[ 96.437726] 00007fff0c5881f0 ffff880221a75de8 ffffffff8169e1f4 00008b0921a75e40
[ 96.437800] 0000000000008b09 00007fff0c5881f0 ffff880221a75e20 00000000ffffffe7
[ 96.437874] Call Trace:
[ 96.437902] [<ffffffff8169e1f4>] wext_handle_ioctl+0x74/0xd0
[ 96.437958] [<ffffffff815cd3ae>] dev_ioctl+0xce/0x5e0
[ 96.438006] [<ffffffff815b2032>] sock_ioctl+0xf2/0x2b0
[ 96.438056] [<ffffffff811a62b9>] do_vfs_ioctl+0x99/0x570
[ 96.438107] [<ffffffff8108be0a>] ? finish_task_switch+0x4a/0xf0
[ 96.438164] [<ffffffff816cbd66>] ? __schedule+0x3c6/0x7f0
[ 96.438214] [<ffffffff811a6821>] sys_ioctl+0x91/0xb0
[ 96.438262] [<ffffffff816d163e>] ? do_page_fault+0xe/0x10
[ 96.438311] [<ffffffff816d5c5d>] system_call_fastpath+0x1a/0x1f
[ 96.438363] Code: 02 00 00 48 8b 90 70 01 00 00 48 85 c9 0f 84 80 00 00 00 48 8b 09 48 85 c9 74 78 48 85 d2 48 8b 89 90 03 00 00 0f 84 bf 00 00 00 <0f> b7 72 08 8d 8b 00 7...