lkml.org 
[lkml]   [2006]   [Dec]   [27]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRe: moxa serial driver testing
Date
Jiri Slaby <jirislaby@gmail.com> writes:

>> Jiri Slaby <jirislaby@gmail.com> writes:
>>
>> > Could you test the patch below, if something changes?
>>
>> Just tested with low_latency commented out. Still oopses:
>>
>> BUG: unable to handle kernel NULL pointer dereference at virtual address 00000008
>> printing eip:
>> f8f1730f
>> *pde = 00000000
>> Oops: 0000 [#1]
>> SMP
>> Modules linked in: nvidia agpgart ipv6 nfs lockd nfs_acl sunrpc dm_mod sr_mod sbp2 ieee1394 ide_generic ide_disk e1000 snd_hda_intel snd_hda_codec snd_pcm_oss snd_mixer_oss snd_pcm snd_timer i2c_i801 tsdev psmouse snd soundcore snd_page_alloc i2c_core serio_raw parport_pc parport mxser_new evdev floppy pcspkr rtc ext3 jbd mbcache usb_storage usbhid ide_cd cdrom sd_mod uhci_hcd piix usbcore skge ata_piix libata scsi_mod generic ide_core thermal processor fan
>> CPU: 0
>> EIP: 0060:[<f8f1730f>] Tainted: P VLI
>> EFLAGS: 00010046 (2.6.18-3-686 #1)
>> EIP is at mxser_receive_chars+0x21b/0x249 [mxser_new]
>
> Yes, port->tty still somewhere becomes NULL -- does this patch help?

In addition to my previous answer. I've performed the same tests with
regular PC serial port. The issues with "Disabling Irq #N" and with I/O
error on open() exist with this port as well, so they aren't
mxser-specific. I wasn't able to reproduce oopses, so they do seem to
be mxser-specific.

-- Sergei.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2006-12-27 16:33    [W:0.077 / U:0.452 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site