Red Hat Bugzilla – Bug 125688
iwconfig hangs when trying to use ndiswrapper 0.7 with WEP
Last modified: 2014-03-16 22:46:07 EDT
From Bugzilla Helper: User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.6) Gecko/20040510 Description of problem: Installed ndiswrapper-0.7 and bcmwl5 driver for Dell True Mobile card built into Dell Inspiron 8600. Attempt to activate wlan0 with system-config-network fails with message "Segmentation fault", and dmesg shows: Unable to handle kernel paging request at virtual address fee6b440 printing eip: 42bb015e *pde = 00000000 Oops: 0000 [#1] CPU: 0 EIP: 0060:[<42bb015e>] Tainted: P EFLAGS: 00010206 (2.6.5-1.358) EIP is at ndis_set_wep+0xa2/0x157 [ndiswrapper] eax: 0000000d ebx: 40e86220 ecx: 00000003 edx: 0000000d esi: fee6b440 edi: 2b18bed0 ebp: 40e86000 esp: 2b18beac ds: 007b es: 007b ss: 0068 Process iwconfig (pid: 3178, threadinfo=2b18b000 task=2908b9b0) Stack: 29094fec 000009ac 2b122800 034e1e40 02135342 0000000d 0000002c 80000000 0000000d 0213f1ba 034e1e40 290f2000 00000000 fee6b44d 0000000d fee6b440 316129fc 00008b2a 0228b4d8 00000001 2b18bf44 00008b2a 0223db68 316129fc Call Trace: [<02135342>] follow_page+0xda/0xe5 [<0213f1ba>] rw_vm+0x1ce/0x1ea [<0223db68>] wireless_process_ioctl+0x2bf/0x59a [<42bb00bc>] ndis_set_wep+0x0/0x157 [ndiswrapper] [<0223701b>] dev_ioctl+0x24e/0x283 [<0222ff8f>] sock_ioctl+0x52/0x280 [<0213816b>] do_brk+0x1a5/0x1d0 [<0214ea0e>] sys_ioctl+0x1f2/0x224 Code: f3 a5 a8 02 74 02 66 a5 a8 01 74 01 a4 8d 44 24 04 ba 13 01 Version-Release number of selected component (if applicable): How reproducible: Always Steps to Reproduce: 1. Get Dell Inspiron 8600 with 802.11g card, ndiswrapper-0.7, and bcmwl5.dll 2. Follow http://www.linuxelectrons.com/article.php/20040507104718960 (or similar from fedoranews.org) 3. Put WEP key in hexadecimal format Actual Results: Segmentation fault, system-config-network hangs. Subsequent execution of iwconfig hangs. Expected Results: Working wireless connection. Additional info:
Turns out segmentation fault was caused by WEP; once WEP key is removed everything is working fine. This [1] also indicates that later than 0.7 ndiswrapper should have WEP working. [1] http://article.gmane.org/gmane.linux.drivers.ndiswrapper.general/2116
(updated summary)
This problem isn't in an Fedora shipped components so should be reported upstream (if indeed its not fixed in 0.7)