Messages in this thread | | | From | Sergei Organov <> | Subject | Re: moxa serial driver testing | Date | Wed, 27 Dec 2006 18:29:47 +0300 |
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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.
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