Re: Supermicro X8DT6 crashes in bootloader after r239066
on 31/10/2012 07:31 Navdeep Parhar said the following:
I have one of these X8DT6 systems. It has grub2 as the primary boot
loader which then loads zfsloader. Many weeks back I updated the BIOS,
grub, and FreeBSD and ran into a similar problem -- zfsloader would
start, print a few messages, and then the system would reboot. I
tracked it down to the int 0x13 call (with eax=0x4800) in bd_int13probe.
It would walk past the end of the edd_params structure and corrupt the
return address on the stack. I worked around it by padding edd_params.
I was planning to debug it further to find out which of the 3 things
that were updated caused the problem but Other Things(tm) came up. See
if this works for you too:
diff -r d35d326e437a -r e5228169f3f1 sys/boot/i386/common/edd.h
--- a/sys/boot/i386/common/edd.hTue Oct 30 21:51:09 2012 -0700
+++ b/sys/boot/i386/common/edd.hTue Oct 30 21:51:20 2012 -0700
@@ -62,6 +62,7 @@ struct edd_params {
uint16_tsector_size;
uint16_tedd_params_seg;
uint16_tedd_params_off;
+ charpad[64];
};
Navdeep,
I've committed a different antidote for this BIOS bug as r243025.
Could you please that it works for you too?
--
Andriy Gapon
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Re: Supermicro X8DT6 crashes in bootloader after r239066
On 11/14/12 03:17, Andriy Gapon wrote:
on 31/10/2012 07:31 Navdeep Parhar said the following:
I have one of these X8DT6 systems. It has grub2 as the primary boot
loader which then loads zfsloader. Many weeks back I updated the BIOS,
grub, and FreeBSD and ran into a similar problem -- zfsloader would
start, print a few messages, and then the system would reboot. I
tracked it down to the int 0x13 call (with eax=0x4800) in bd_int13probe.
It would walk past the end of the edd_params structure and corrupt the
return address on the stack. I worked around it by padding edd_params.
I was planning to debug it further to find out which of the 3 things
that were updated caused the problem but Other Things(tm) came up. See
if this works for you too:
diff -r d35d326e437a -r e5228169f3f1 sys/boot/i386/common/edd.h
--- a/sys/boot/i386/common/edd.hTue Oct 30 21:51:09 2012 -0700
+++ b/sys/boot/i386/common/edd.hTue Oct 30 21:51:20 2012 -0700
@@ -62,6 +62,7 @@ struct edd_params {
uint16_tsector_size;
uint16_tedd_params_seg;
uint16_tedd_params_off;
+ charpad[64];
};
Navdeep,
I've committed a different antidote for this BIOS bug as r243025.
Could you please that it works for you too?
Yes it works for me too, thanks Andriy!
Regards,
Navdeep
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Supermicro X8DT6 crashes in bootloader after r239066
I have a X8DT6 that appears to crash in the bootloader from HEAD. I say appears to because it's difficult to really see what the problem is; the system reboots pretty much as soon as it enters the FreeBSD boot process. The problem affects PXE booting, booting from ZFS on GPT on a SATA drive and UFS on MBR on a USB stick. The problem only occurs if I have any SATA disks plugged in. If I remove all SATA disks I can successfully PXE boot or boot from a USB key. I've tried with a couple of different SATA disks, some with GPT and some with MBR, and the reboot happens in both cases. The last things that I see on the serial console before the reboot is: DHCP..- ^[[06;07H^[[06;00HDH CP..\ ^[ [06;07H^[[05;00HCLIENT MAC ADDR: 00 25 90 92 19 94 GUID: 84F7C23B 5F21 2533 625 C 002590921994 ^[[06;00HCLIENT IP: 172.16.1.50 MASK: 255.255.255.0 DHCP IP: 1 72.16.1.1^[[07;00HGATEWAY IP: 172.16.1.1 ^[[08;00HPXE Loader 1.00^[[2JM-^@^[[01;00H^[[0 m^[[2m^[[0m^[[2;30;40m ^@^[[0m^[[2;37;40m ^[[02;00H^[[0m^[[2;30;40m So it really doesn't seem to get very far at all. I've bisected and confirmed that the problem was introduced in r239066. I tried reverting that commit locally and I can boot fine again. I took a quick look at that commit but it appears to be way over my head. I'm willing to test patches or gather more debugging information; this thing isn't going anywhere until I can get it booting. :) Ryan ___ freebsd-current@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to freebsd-current-unsubscr...@freebsd.org
Re: Supermicro X8DT6 crashes in bootloader after r239066
On Tue, Oct 30, 2012 at 08:34:53PM -0400, Ryan Stone wrote:
I have a X8DT6 that appears to crash in the bootloader from HEAD. I say
appears to because it's difficult to really see what the problem is; the
system reboots pretty much as soon as it enters the FreeBSD boot process.
The problem affects PXE booting, booting from ZFS on GPT on a SATA drive
and UFS on MBR on a USB stick.
The problem only occurs if I have any SATA disks plugged in. If I remove
all SATA disks I can successfully PXE boot or boot from a USB key. I've
tried with a couple of different SATA disks, some with GPT and some with
MBR, and the reboot happens in both cases.
The last things that I see on the serial console before the reboot is:
DHCP..-
^[[06;07H^[[06;00HDH
CP..\
^[
[06;07H^[[05;00HCLIENT MAC ADDR: 00 25 90 92 19 94 GUID: 84F7C23B 5F21
2533 625
C 002590921994 ^[[06;00HCLIENT IP: 172.16.1.50 MASK: 255.255.255.0 DHCP
IP: 1
72.16.1.1^[[07;00HGATEWAY IP:
172.16.1.1
^[[08;00HPXE Loader
1.00^[[2JM-^@^[[01;00H^[[0
m^[[2m^[[0m^[[2;30;40m
^@^[[0m^[[2;37;40m
^[[02;00H^[[0m^[[2;30;40m
So it really doesn't seem to get very far at all.
I've bisected and confirmed that the problem was introduced in r239066. I
tried reverting that commit locally and I can boot fine again. I took a
quick look at that commit but it appears to be way over my head. I'm
willing to test patches or gather more debugging information; this thing
isn't going anywhere until I can get it booting. :)
I have one of these X8DT6 systems. It has grub2 as the primary boot
loader which then loads zfsloader. Many weeks back I updated the BIOS,
grub, and FreeBSD and ran into a similar problem -- zfsloader would
start, print a few messages, and then the system would reboot. I
tracked it down to the int 0x13 call (with eax=0x4800) in bd_int13probe.
It would walk past the end of the edd_params structure and corrupt the
return address on the stack. I worked around it by padding edd_params.
I was planning to debug it further to find out which of the 3 things
that were updated caused the problem but Other Things(tm) came up. See
if this works for you too:
diff -r d35d326e437a -r e5228169f3f1 sys/boot/i386/common/edd.h
--- a/sys/boot/i386/common/edd.hTue Oct 30 21:51:09 2012 -0700
+++ b/sys/boot/i386/common/edd.hTue Oct 30 21:51:20 2012 -0700
@@ -62,6 +62,7 @@ struct edd_params {
uint16_tsector_size;
uint16_tedd_params_seg;
uint16_tedd_params_off;
+ charpad[64];
};
Regards,
Navdeep
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