Date: Sun, 18 May 2014 15:57:07 +0200 From: =?ISO-8859-1?Q?Olivier_Cochard=2DLabb=E9?= <olivier@cochard.me> To: =?ISO-8859-2?Q?Edward_Tomasz_Napiera=B3a?= <trasz@freebsd.org> Cc: "freebsd-hackers@freebsd.org" <freebsd-hackers@freebsd.org> Subject: Re: Workaround for "fatal firmware error" iwn(4) problem. Message-ID: <CA%2Bq%2BTcpHvunOJXucN2j7=PDLrhND1JK7B-QWC-QDTEEZHnJ4PQ@mail.gmail.com> In-Reply-To: <8FB7D6BF-005A-41A1-9DCE-C8B09EA338EE@FreeBSD.org> References: <8FB7D6BF-005A-41A1-9DCE-C8B09EA338EE@FreeBSD.org>
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On Fri, May 16, 2014 at 8:06 PM, Edward Tomasz Napiera=C5=82a <trasz@freebsd.org>wrote: > I've started using FreeBSD laptop and iwn(4) failing at random moments > like this... > > I had the same problem too with iwn(4). > > ... has been driving me crazy, so I wrote a workaround. The patch > can be found here: > > http://people.freebsd.org/~trasz/iwn.diff > > I've tested you patch on a r266396, but it generate a panic: wlan0: Ethernet address: 00:1d:e0:29:19:65 Starting wpa_supplicant. Starting dhclient. wlan0: no link .............. giving up /etc/rc.d/dhclient: WARNING: failed to start dhclient iwn0: iwn_intr: fatal firmware error firmware error log: error type =3D "NMI_INTERRUPT_WDG" (0x00000004) program counter =3D 0x0000046C source line =3D 0x000000D0 error data =3D 0x0000000207030000 branch link =3D 0x00008370000004C2 interrupt link =3D 0x000006DE000018B8 time =3D 11427825 driver status: tx ring 0: qid=3D0 cur=3D0 queued=3D0 tx ring 1: qid=3D1 cur=3D0 queued=3D0 tx ring 2: qid=3D2 cur=3D0 queued=3D0 tx ring 3: qid=3D3 cur=3D1 queued=3D0 tx ring 4: qid=3D4 cur=3D68 queued=3D0 tx ring 5: qid=3D5 cur=3D0 queued=3D0 tx ring 6: qid=3D6 cur=3D0 queued=3D0 tx ring 7: qid=3D7 cur=3D0 queued=3D0 tx ring 8: qid=3D8 cur=3D0 queued=3D0 tx ring 9: qid=3D9 cur=3D0 queued=3D0 tx ring 10: qid=3D10 cur=3D0 queued=3D0 tx ring 11: qid=3D11 cur=3D0 queued=3D0 tx ring 12: qid=3D12 cur=3D0 queued=3D0 tx ring 13: qid=3D13 cur=3D0 queued=3D0 tx ring 14: qid=3D14 cur=3D0 queued=3D0 tx ring 15: qid=3D15 cur=3D0 queued=3D0 rx ring: cur=3D22 iwn0: iwn_intr: reinit; 0xfffffe00008090b0 iwn0: iwn_reinit_thread: controller panicked; resetting... Fatal trap 12: page fault while in kernel mode cpuid =3D 0; apic id =3D 00 fault virtual address =3D 0xffff fault code =3D supervisor read data, page not present instruction pointer =3D 0x20:0xffffffff805a4b10 stack pointer =3D 0x28:0xfffffe0120353b30 frame pointer =3D 0x28:0xfffffe0120353b60 code segment =3D base 0x0, limit 0xfffff, type 0x1b =3D DPL 0, pres 1, long 1, def32 0, gran 1 processor eflags =3D interrupt enabled, resume, IOPL =3D 0 current process =3D 0 (iwn_reinit) About the instruction pointer code: addr2line -e /boot/kernel/kernel.symbols 0xffffffff805a4b10 /usr/src/sys/dev/iwn/if_iwn.c:6792 Regards, Olivier
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