Re: 2.6.12-rc1-bk2+PREEMPT_BKL: Oops at serio_interrupt

[Alexey Dobriyan <adobriyan@mail.ru>]

On Wednesday 30 March 2005 10:30, Dmitry Torokhov wrote:
> On Tuesday 29 March 2005 14:49, Alexey Dobriyan wrote:
> > According to vmlinux, c0202947 is at:
> > 
> > c020293e <serport_ldisc_write_wakeup>:
> 
> Could you please try this one instead? Thanks!

Still dies in serport_ldisc_write_wakeup (doesn't matter how to trigger)
via:

Unable to handle kernel NULL pointer dereference at virtual address 00000068
EIP: c020294f
	tty_wakeup
	uart_close
	wait_for_completion
	release_dev

If you want me to be more specific, wait until I figure out how to print
only parts of oops (to fit them on console).
============================================================================
c0202930 <serport_ldisc_write_wakeup>:
c0202930:       push   %esi
c0202931:       push   %ebx
c0202932:       mov    0x978(%eax),%ebx
c0202938:       pushf
c0202939:       pop    %esi
c020293a:       cli
c020293b:       mov    $0x1,%eax
c0202940:       call   c010ecaf <add_preempt_count>
c0202945:       mov    0x14(%ebx),%eax
c0202948:       test   $0x4,%al
c020294a:       jne    c0202956 <serport_ldisc_write_wakeup+0x26>
c020294c:       mov    0xc(%ebx),%eax
c020294f: ==>>  mov    0x68(%eax),%edx	<<==
c0202952:       test   %edx,%edx
c0202954:       jne    c0202973 <serport_ldisc_write_wakeup+0x43>
c0202956:       push   %esi
c0202957:       popf
c0202958:       mov    $0x1,%eax
c020295d:       call   c010ece1 <sub_preempt_count>
c0202962:       mov    $0xfffff000,%eax
c0202967:       and    %esp,%eax
c0202969:       mov    0x8(%eax),%eax
c020296c:       test   $0x8,%al
c020296e:       jne    c0202984 <serport_ldisc_write_wakeup+0x54>
c0202970:       pop    %ebx
c0202971:       pop    %esi
c0202972:       ret
c0202973:       mov    0x10(%edx),%edx
c0202976:       test   %edx,%edx
c0202978:       je     c0202956 <serport_ldisc_write_wakeup+0x26>
c020297a:       lea    0x0(%esi),%esi
c0202980:       call   *%edx
c0202982:       jmp    c0202956 <serport_ldisc_write_wakeup+0x26>
c0202984:       pop    %ebx
c0202985:       pop    %esi
c0202986:       jmp    c029ad16 <preempt_schedule>
-
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