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SubjectRe: Oops with microcode update driver on 2.2.19pre3
Hi Aaron,

Although I have not looked at Oops report in detail (Sabbath is now on,
can't do work!) but I am well aware of two (or more) bugs in that area and
one of them may well be the cause of your oops I assumed the
X86_FEATURE flags semantics to be the same on 2.2 as in 2.4 but then
discovered it is different, fix is trivia) -- I will send Alan all the
fixes real soon now. Possibly on Monday/Tuesday during the so-called
"holidays" (I don't recognize those pagan feasts either :)

Regards,
Tigran

On Fri, 22 Dec 2000, Aaron Sethman wrote:

>
> I am getting the following oops while trying to update the microcode of a
> PII@266mhz using the microcode update driver. Below is the output of
> ksymoops. This was built using egcs-1.1.2.
>
> Also in case it matters I've applied the ide-2.2.18 patch so I can use my
> Promise ATA66 controller and the latest reiserfs patch..
>
> Regards,
>
> Aaron
>
> ksymoops 0.7c on i686 2.2.19pre3. Options used
> -V (default)
> -k /proc/ksyms (default)
> -l /proc/modules (default)
> -o /lib/modules/2.2.19pre3/ (default)
> -m /usr/src/linux/System.map (default)
>
> No modules in ksyms, skipping objects
> Warning (read_lsmod): no symbols in lsmod, is /proc/modules a valid lsmod file?
> Unable to handle kernel paging request at virtual address c823e12c
> current->tss.cr3 = 05e9b000, %cr3 = 05e9b000
> *pde = 00000000
> Oops: 0000
> CPU: 0
> EIP: 0010:[<c01078b1>]
> Using defaults from ksymoops -t elf32-i386 -a i386
> EFLAGS: 00010202
> eax: 00000006 ebx: 00000000 ecx: 00000000 edx: bf87933c
> esi: c023e120 edi: c6c31000 ebp: c5e9c000 esp: c5e9df4c
> ds: 0018 es: 0018 ss: 0018
> Process microcode_ctl (pid: 1011, process nr: 48, stackpage=c5e9d000)
> Stack: c6c31000 c5e9c000 00250000 06101c8c 00000000 c8a50000 c8a34000 00000000
> c010782d 00000000 0001b800 c5e84540 c6c31000 c5e9c000 c0107c21 c5bcabb0
> ffffffea c01245c9 c5e84540 bf85db3c 0001b800 c5e84554 c5e9c000 00000003
> Call Trace: [<c8a50000>] [<c8a34000>] [<c010782d>] [<c0107c21>] [<c01245c9>] [<c0107b38>] [<c01094e8>]
> Code: a1 2c e1 23 c8 a8 01 74 5a 6a 00 68 20 78 20 c0 e8 d2 bc 00
>
> >>EIP; c01078b1 <do_update_one+39/20c> <=====
> Trace; c8a50000 <END_OF_CODE+87ae578/????>
> Trace; c8a34000 <END_OF_CODE+8792578/????>
> Trace; c010782d <do_microcode_update+d/58>
> Trace; c0107c21 <microcode_write+e9/120>
> Trace; c01245c9 <sys_write+e5/118>
> Trace; c0107b38 <microcode_write+0/120>
> Trace; c01094e8 <system_call+34/38>
> Code; c01078b1 <do_update_one+39/20c>
> 00000000 <_EIP>:
> Code; c01078b1 <do_update_one+39/20c> <=====
> 0: a1 2c e1 23 c8 mov 0xc823e12c,%eax <=====
> Code; c01078b6 <do_update_one+3e/20c>
> 5: a8 01 test $0x1,%al
> Code; c01078b8 <do_update_one+40/20c>
> 7: 74 5a je 63 <_EIP+0x63> c0107914 <do_update_one+9c/20c>
> Code; c01078ba <do_update_one+42/20c>
> 9: 6a 00 push $0x0
> Code; c01078bc <do_update_one+44/20c>
> b: 68 20 78 20 c0 push $0xc0207820
> Code; c01078c1 <do_update_one+49/20c>
> 10: e8 d2 bc 00 00 call bce7 <_EIP+0xbce7> c0113598 <printk+0/16c>
>
>
>
>

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