[parisc-linux] panic while "set serial" with 2.4.20-pa9

[parisc-linux] panic while "set serial" with 2.4.20-pa9

[Bruno Vidal]

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    Hi
I'm compiling a new kernel, but it panic while doing "set serial":

Serial driver version 5.05c (2001-07-08) with MANY_PORTS SHARE_IRQ SERIAL_PCI enabled
Redundant entry in serial pci_table.  Please send the output of
lspci -vv, this message (103c,1048,103c,1049)
and the manufacturer and name of serial board or modem board
to serial-pci-info@lists.sourceforge.net.
ttyS00 at iomem 0xfffffffff8000000 (irq = 132) is a 16550A
ttyS01 at iomem 0xfffffffff8000008 (irq = 132) is a 16550A
ttyS02 at iomem 0xfffffffff8000010 (irq = 132) is a 16550A
Redundant entry in serial pci_table.  Please send the output of
lspci -vv, this message (103c,1048,103c,104a)
and the manufacturer and name of serial board or modem board
to serial-pci-info@lists.sourceforge.net.

Stack Dump:
 000000004fbb91c0:  000000ff0804ff0e 6f70717273747576 000000001013c5c4 3839616263646566
 000000004fbb91a0:  3031323334353637 000000000800000f 000000000800000e 00000000105c1ad0
 000000004fbb9180:  00000000105c1ad0 fffffffffffff18d 00000000106dec08 00000000104d66e0
 000000004fbb9160:  00000000106deac8 00000000104d66d0 00000000106deac8 0280000000000002
 000000004fbb9140:  00000000104b61f0 00000000105c1ad0 000000001013cc8c 00000000105c1ad0
Kernel addresses on the stack:
 [<000000001013c5c4>]  [<000000001013cc8c>]  [<000000001027b3e4>]  [<000000001027bd64>]
 [<00000000101ab4b4>]  [<0000000010308ebc>]  [<00000000101450c8>]  [<0000000010308fc0>]
 [<000000001027bf4c>]  [<00000000101003b4>]  [<0000000010108460>]  [<0000000010108518>]
 [<000000001013c5c4>]  [<000000001013c5c4>]  [<000000001013cc8c>]  [<0000000010100388>]

Sorry, my dump driver is not initialised at this time (I must add "early dump" feature).
If you have any idea ? The previous kernel: 2.4.19-pa22 boot without any problem.

Thanks.

--
        Vidal Bruno, (770-4271)
        SSD-HA Team, HP-UX & LINUX Support
        bruno_vidal@admin.france.hp.com



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Re: [parisc-linux] panic while "set serial" with 2.4.20-pa9

[Bruno Vidal]

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    Hi

When boot is successfull (with 2.4.19-pa22), it discover 5 serial board
....
....
Redundant entry in serial pci_table.  Please send the output of
lspci -vv, this message (103c,1048,103c,1049)
and the manufacturer and name of serial board or modem board
to serial-pci-info@lists.sourceforge.net.
ttyS00 at iomem 0xfffffffff8000000 (irq = 132) is a 16550A
ttyS01 at iomem 0xfffffffff8000008 (irq = 132) is a 16550A
ttyS02 at iomem 0xfffffffff8000010 (irq = 132) is a 16550A
Redundant entry in serial pci_table.  Please send the output of
lspci -vv, this message (103c,1048,103c,104a)
and the manufacturer and name of serial board or modem board
to serial-pci-info@lists.sourceforge.net.
ttyS03 at iomem 0xfffffffff8005000 (irq = 133) is a 16550A
ttyS04 at iomem 0xfffffffff8005008 (irq = 133) is a 16550A
....
....

Now when booting the latest kernel 2.4.20-pa10

Kernel Fault: Code=26 regs=000000004fbb11c0 (Addr=0000000000000008)

If I try to do some stack unwind it gives:
0x1013c5c4    call_console_drivers+0xc4
0x1013cc8c    release_console_sem+0x164
0x1027b3e4    start_pci_pnp_board+0xa4
0x1027bd64    serial_init_one+0xac

It is a trap 26 -> Data Memory Access right trap in call_console_drivers().
When dissamble:

  b8:   37 dd 3f e1     ldo -10(sp),ret1
  bc:   e8 00 a0 00     b,l c4 <call_console_drivers+0xc4>,%r2
  c0:   0e 60 10 98     ldw 0(sr0,r19),r24
  c4:   08 06 02 5b     copy r6,dp    -> panic while accessing dp
  c8:   53 c2 3e e1     ldd -90(sp),rp

If someone as any idea........

Thanks.


--
        Vidal Bruno, (770-4271)
        SSD-HA Team, HP-UX & LINUX Support
        bruno_vidal@admin.france.hp.com



[-- Attachment #2: Card for Bruno Vidal --]
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n:Bruno;VIDAL
tel;fax:01-69-82-60-14
tel;work:01-69-29-42-71
x-mozilla-html:TRUE
url:www.france.hp.com
org:Solution Center
version:2.1
email;internet:bruno_vidal@hp.com
title:Expert Logiciel Environnement Haute Disponibilité
adr;quoted-printable:;;HP France=0D=0A;Z.A de Courtaboeuf;1 Av. du Canada;91947 Les Ulis cedex;France
x-mozilla-cpt:;26208
fn:VIDAL Bruno
end:vcard

Re: [parisc-linux] panic while "set serial" with 2.4.20-pa9

[Paul Bame]

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It's probably not the new kernel. setserial is quite dangerous and
bypasses any driver-related safety.  I often disable or remove it on
development machines and it's often fatal after a serial configuration
change.

The two places I've suffered are when I removed serial ports and
rebooted, and when I booted a second machine (with different port setup)
from a disk made from the first machine.  In both cases setserial tried
to restore settings using addresses which didn't exist --> panic.

	-P