On Wed, Feb 19, 2014 at 8:32 AM, Alexander Shiyan <[email protected]> wrote:
> During testing functions transfer_one(), stumbled upon an error.
> I'm using kernel 3.13, so I had to apply a patch from upstream
> (spi: core: Fix transfer failure when master->transfer_one returns positive
> value).
> After applying all becomes normal with probing, but where did the error
> "Unable to handle kernel NULL pointer dereference" ?
> Did someone have similar bugs?
>
> Thanks.
>
> spi_master spi0: failed to transfer one message from queue: 1
> 74x164 spi0.1: Failed writing: 1
> 74x164: probe of spi0.1 failed with error 1
> Unable to handle kernel NULL pointer dereference at virtual address 00000020
> CAN device driver interface
> pgd = c0024000
> [00000020] *pgd=00000000
> Internal error: Oops: 63c11805 [#1] PREEMPT ARM
> CPU: 0 PID: 22 Comm: spi0 Not tainted 3.13.3 #1
> task: c396b260 ti: c396e000 task.ti: c396e000
> PC is at spi_pump_messages+0x150/0x194
Have you applied other patches from upstream?
E.g. e120cc0dcf2880a4c5c0a6cb27b655600a1cfa1d introduced a NULL
pointer dereference, with got fixed by
1f802f8249a0da536877842c43c7204064c4de8b.
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- [email protected]
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
--
To unsubscribe from this list: send the line "unsubscribe linux-spi" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
