With today''s build, my domain 0 crashes during boot when it tries to
bring eth0 up (it''s an E100).
cb->prev (eax) is NULL in e100_exec_cb() (e100.c:827). Just from code
inspection, I don''t see how this can be. e100_alloc_cbs() was just
called, which looks like it should have correctly linked up all the
cb->prev/cb->next pointers.
It happens regardless of CONFIG_XEN_WRITABLE_PAGETABLES.
Has anyone else seen this?
e100: eth0: e100_watchdog: link up, 100Mbps, full-duplex
Unable to handle kernel NULL pointer dereference at virtual address
00000002
printing eip:
c022d6d2
*pde = ma 00000000 pa 55555000
[<c022ea3a>] e100_alloc_cbs+0x74/0x140
[<c022f5bb>] e100_up+0x39/0x1d6
[<c0127f8b>] queue_delayed_work+0x50/0x6d
[<c02307b3>] e100_open+0x23/0x69
[<c031198b>] dev_open+0x8a/0xe6
[<c0312e6e>] dev_change_flags+0x51/0x11f
[<c03479d6>] devinet_ioctl+0x4f1/0x5b2
[<c03496b9>] inet_ioctl+0x7e/0xa8
[<c030a026>] sock_ioctl+0x184/0x25d
[<c015c4e6>] sys_ioctl+0x16f/0x211
[<c010d1b7>] syscall_call+0x7/0xb
Oops: 0002 [#1]
Modules linked in:
CPU: 0
EIP: 0061:[<c022d6d2>] Not tainted
EFLAGS: 00013202 (2.6.8.1-xen0)
EIP is at e100_hw_init+0x19c/0x6e3
eax: 00000000 ebx: c66c8000 ecx: 00000005 edx: c7c19220
esi: c7c19220 edi: 0000003f ebp: 00000000 esp: c73cfe40
ds: 0069 es: 0069 ss: 0069
Process ip (pid: 1708, threadinfo=c73ce000 task=c745a680)
Stack: c7c19220 c66c8000 00000000 00000040 c7c19220 00000000 c022ea3a
c1199844
00006700 c7c19484 00000000 00000000 00000000 c7c19220 c7c19220
00000000
c022f5bb c7c19220 c7fee260 0000004f c0127f8b c03f6698 c7c19000
00000000
Call Trace:
[<c022ea3a>] e100_alloc_cbs+0x74/0x140
[<c022f5bb>] e100_up+0x39/0x1d6
[<c0127f8b>] queue_delayed_work+0x50/0x6d
[<c02307b3>] e100_open+0x23/0x69
[<c031198b>] dev_open+0x8a/0xe6
[<c0312e6e>] dev_change_flags+0x51/0x11f
[<c03479d6>] devinet_ioctl+0x4f1/0x5b2
[<c03496b9>] inet_ioctl+0x7e/0xa8
[<c030a026>] sock_ioctl+0x184/0x25d
[<c015c4e6>] sys_ioctl+0x16f/0x211
[<c010d1b7>] syscall_call+0x7/0xb
Code: 66 81 60 02 ff bf 8b 86 14 01 00 00 3b 86 10 01 00 00 3e 75
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Yes, I get the same thing. Server reboots right after the line ''e1000_watchdog: NIC link is up...'' (similar hardware to yours no doubt). I don''t see any messages. It sits for about 10 seconds before restarting. I do see this in the syslog, which appears strange to me: Xen1 kernel: Symbols match kernel version 2.6.8. Xen1 kernel: No module symbols loaded - kernel modules not enabled. Also: Xen1 kernel: Kernel command line: /boot/vmlinuz-2.6.8.1-xen0 root=/dev/sda1 ro console=tty0 console=ttyS0 Xen1 kernel: Unknown boot option `/boot/vmlinuz-2.6.8.1-xen0'' : ignoring By grub boot instructions are: kernel /boot/xen.gz dom0_mem=131072 com21=115200,8n1 module /boot/vmlinuz-2.6.8.1-xen0 root=/dev/sda1 ro console=tty0 console=ttyS0 Is this not correct for the 2.6.x kernels? Regards, Paul On Tuesday 21 September 2004 10:22 am, Charles Coffing wrote:> With today''s build, my domain 0 crashes during boot when it tries to > bring eth0 up (it''s an E100). > > cb->prev (eax) is NULL in e100_exec_cb() (e100.c:827). Just from code > inspection, I don''t see how this can be. e100_alloc_cbs() was just > called, which looks like it should have correctly linked up all the > cb->prev/cb->next pointers. > > It happens regardless of CONFIG_XEN_WRITABLE_PAGETABLES. > > Has anyone else seen this? > > > e100: eth0: e100_watchdog: link up, 100Mbps, full-duplex > Unable to handle kernel NULL pointer dereference at virtual address > 00000002 > printing eip: > c022d6d2 > *pde = ma 00000000 pa 55555000 > [<c022ea3a>] e100_alloc_cbs+0x74/0x140 > [<c022f5bb>] e100_up+0x39/0x1d6 > [<c0127f8b>] queue_delayed_work+0x50/0x6d > [<c02307b3>] e100_open+0x23/0x69 > [<c031198b>] dev_open+0x8a/0xe6 > [<c0312e6e>] dev_change_flags+0x51/0x11f > [<c03479d6>] devinet_ioctl+0x4f1/0x5b2 > [<c03496b9>] inet_ioctl+0x7e/0xa8 > [<c030a026>] sock_ioctl+0x184/0x25d > [<c015c4e6>] sys_ioctl+0x16f/0x211 > [<c010d1b7>] syscall_call+0x7/0xb > Oops: 0002 [#1] > Modules linked in: > CPU: 0 > EIP: 0061:[<c022d6d2>] Not tainted > EFLAGS: 00013202 (2.6.8.1-xen0) > EIP is at e100_hw_init+0x19c/0x6e3 > eax: 00000000 ebx: c66c8000 ecx: 00000005 edx: c7c19220 > esi: c7c19220 edi: 0000003f ebp: 00000000 esp: c73cfe40 > ds: 0069 es: 0069 ss: 0069 > Process ip (pid: 1708, threadinfo=c73ce000 task=c745a680) > Stack: c7c19220 c66c8000 00000000 00000040 c7c19220 00000000 c022ea3a > c1199844 > 00006700 c7c19484 00000000 00000000 00000000 c7c19220 c7c19220 > 00000000 > c022f5bb c7c19220 c7fee260 0000004f c0127f8b c03f6698 c7c19000 > 00000000 > Call Trace: > [<c022ea3a>] e100_alloc_cbs+0x74/0x140 > [<c022f5bb>] e100_up+0x39/0x1d6 > [<c0127f8b>] queue_delayed_work+0x50/0x6d > [<c02307b3>] e100_open+0x23/0x69 > [<c031198b>] dev_open+0x8a/0xe6 > [<c0312e6e>] dev_change_flags+0x51/0x11f > [<c03479d6>] devinet_ioctl+0x4f1/0x5b2 > [<c03496b9>] inet_ioctl+0x7e/0xa8 > [<c030a026>] sock_ioctl+0x184/0x25d > [<c015c4e6>] sys_ioctl+0x16f/0x211 > [<c010d1b7>] syscall_call+0x7/0xb > Code: 66 81 60 02 ff bf 8b 86 14 01 00 00 3b 86 10 01 00 00 3e 75 > > > > ------------------------------------------------------- > This SF.Net email is sponsored by: YOU BE THE JUDGE. Be one of 170 > Project Admins to receive an Apple iPod Mini FREE for your judgement on > who ports your project to Linux PPC the best. Sponsored by IBM. > Deadline: Sept. 24. Go here: http://sf.net/ppc_contest.php > _______________________________________________ > Xen-devel mailing list > Xen-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/xen-devel------------------------------------------------------- This SF.Net email is sponsored by: YOU BE THE JUDGE. Be one of 170 Project Admins to receive an Apple iPod Mini FREE for your judgement on who ports your project to Linux PPC the best. Sponsored by IBM. Deadline: Sept. 24. Go here: http://sf.net/ppc_contest.php _______________________________________________ Xen-devel mailing list Xen-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/xen-devel
> With today''s build, my domain 0 crashes during boot when it tries to > bring eth0 up (it''s an E100). > > cb->prev (eax) is NULL in e100_exec_cb() (e100.c:827). Just from code > inspection, I don''t see how this can be. e100_alloc_cbs() was just > called, which looks like it should have correctly linked up all the > cb->prev/cb->next pointers. > > It happens regardless of CONFIG_XEN_WRITABLE_PAGETABLES. > > Has anyone else seen this?When was your last successful build? Most likely the changeset in which I introduced page scrubbing is causing you problems. It looks like you are failing on the very first use of a ''cb'', so tracing should lead you to the cause of the problem quite easily. -- Keir ------------------------------------------------------- This SF.Net email is sponsored by: YOU BE THE JUDGE. Be one of 170 Project Admins to receive an Apple iPod Mini FREE for your judgement on who ports your project to Linux PPC the best. Sponsored by IBM. Deadline: Sept. 24. Go here: http://sf.net/ppc_contest.php _______________________________________________ Xen-devel mailing list Xen-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/xen-devel
> I do see this in the syslog, which appears strange to me: > > Xen1 kernel: Symbols match kernel version 2.6.8. > Xen1 kernel: No module symbols loaded - kernel modules not enabled.You built a kernel with no module support?> Also: > > Xen1 kernel: Kernel command line: /boot/vmlinuz-2.6.8.1-xen0 root=/dev/sda1 ro > console=tty0 console=ttyS0 > Xen1 kernel: Unknown boot option `/boot/vmlinuz-2.6.8.1-xen0'' : ignoringThat looks like a bug in our handling of the command line. We should strip the kernel-image name.> By grub boot instructions are: > > kernel /boot/xen.gz dom0_mem=131072 com21=115200,8n1 > module /boot/vmlinuz-2.6.8.1-xen0 root=/dev/sda1 ro console=tty0 console=ttyS0 > > Is this not correct for the 2.6.x kernels?In general, handling of two ''console='' commands is a bit suspect -- this is true of vanilla Linux as well. IT''s not always obvious where your boot messages will go after init starts. :-) Apart from that it looks fine. -- Keir ------------------------------------------------------- This SF.Net email is sponsored by: YOU BE THE JUDGE. Be one of 170 Project Admins to receive an Apple iPod Mini FREE for your judgement on who ports your project to Linux PPC the best. Sponsored by IBM. Deadline: Sept. 24. Go here: http://sf.net/ppc_contest.php _______________________________________________ Xen-devel mailing list Xen-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/xen-devel
> > With today''s build, my domain 0 crashes during boot when it tries to > > bring eth0 up (it''s an E100). > > > > cb->prev (eax) is NULL in e100_exec_cb() (e100.c:827). Just from code > > inspection, I don''t see how this can be. e100_alloc_cbs() was just > > called, which looks like it should have correctly linked up all the > > cb->prev/cb->next pointers. > > > > Has anyone else seen this?Yep -- I can reproduce. It appears to be something e100 specific, as I''ve tested that tg3, e1000 and 3c95x all work fine. Should be easy to fix. Ian ------------------------------------------------------- This SF.Net email is sponsored by: YOU BE THE JUDGE. Be one of 170 Project Admins to receive an Apple iPod Mini FREE for your judgement on who ports your project to Linux PPC the best. Sponsored by IBM. Deadline: Sept. 24. Go here: http://sf.net/ppc_contest.php _______________________________________________ Xen-devel mailing list Xen-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/xen-devel
> With today''s build, my domain 0 crashes during boot when it tries to > bring eth0 up (it''s an E100). > > cb->prev (eax) is NULL in e100_exec_cb() (e100.c:827). Just from code > inspection, I don''t see how this can be. e100_alloc_cbs() was just > called, which looks like it should have correctly linked up all the > cb->prev/cb->next pointers.OK, we''ve tracked this down to a long-standing bug due to a missing local_flush_tlb when creating a contiguous mapping of a PCI region. The scrub_pages change was having the effect of nicely loading the TLB with mappings that were just about to to become stale... This could explain most of the odd behaviour that people have been seeing since the apparently innocuous scrub pages checkin. We''ll do some more testing and push out a fix later today. Ian ------------------------------------------------------- This SF.Net email is sponsored by: YOU BE THE JUDGE. Be one of 170 Project Admins to receive an Apple iPod Mini FREE for your judgement on who ports your project to Linux PPC the best. Sponsored by IBM. Deadline: Sept. 24. Go here: http://sf.net/ppc_contest.php _______________________________________________ Xen-devel mailing list Xen-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/xen-devel
Hi, I am having problems rebooting the xen guest OS using the build from the 28 Aug 2004. I get this following trace, where it then stops. Rebooting... Restarting system. Linux version 2.6.8.1-xenU (root@tecp-fw) (gcc version 3.3.4 (Debian 1:3.3.4-9)) #1 Mon Sep 6 18:56:40 CEST 2004 BIOS-provided physical RAM map: Xen: 0000000000000000 - 0000000008000000 (usable) 128MB LOWMEM available. DMI not present. Built 1 zonelists Kernel command line: ip=:1.2.3.4::::eth0:dhcp root=/dev/sda1 rw 4 sched=fvbt Initializing CPU#0 PID hash table entries: 1024 (order 10: 8192 bytes) Xen reported: 1470.058 MHz processor. Using tsc for high-res timesource Dentry cache hash table entries: 32768 (order: 5, 131072 bytes) Inode-cache hash table entries: 16384 (order: 4, 65536 bytes) Memory: 127112k/131072k available (1550k kernel code, 3792k reserved, 468k data, 92k init, 0k highmem) Checking if this processor honours the WP bit even in supervisor mode... Ok. Calibrating delay loop... 418.61 BogoMIPS Mount-cache hash table entries: 512 (order: 0, 4096 bytes) CPU: L1 I Cache: 64K (64 bytes/line), D cache 64K (64 bytes/line) CPU: L2 Cache: 256K (64 bytes/line) CPU: AMD Athlon(tm) XP 1700+ stepping 02 Enabling fast FPU save and restore... done. Enabling unmasked SIMD FPU exception support... done. Checking ''hlt'' instruction... disabled NET: Registered protocol family 16 Initializing Cryptographic API RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize Initialising Xen virtual block device Xen virtual console successfully installed as tty Event-channel device installed. Initialising Xen virtual ethernet frontend driver. [XEN] Failed to connect all virtual interfaces: err=-100 NET: Registered protocol family 2 IP: routing cache hash table of 1024 buckets, 8Kbytes TCP: Hash tables configured (established 8192 bind 16384) NET: Registered protocol family 1 NET: Registered protocol family 17 IP-Config: Device `eth0'' not found. I am using dummy0 on the bridge. Is this something that may have been fixed in newer versions? Also, the hole box also seems to break stop functioning some times, when there is heavy network load. I will probably have to select debug when compiling to figure that out. Even if I destroy the xen instance and create it again, its the same stop position. Best regards, Thomas Conway. ------------------------------------------------------- This SF.Net email is sponsored by: YOU BE THE JUDGE. Be one of 170 Project Admins to receive an Apple iPod Mini FREE for your judgement on who ports your project to Linux PPC the best. Sponsored by IBM. Deadline: Sept. 24. Go here: http://sf.net/ppc_contest.php _______________________________________________ Xen-devel mailing list Xen-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/xen-devel
On Tue, 2004-09-21 at 02:36, Keir Fraser wrote:> > I do see this in the syslog, which appears strange to me: > > > > Xen1 kernel: Symbols match kernel version 2.6.8. > > Xen1 kernel: No module symbols loaded - kernel modules not enabled. > > You built a kernel with no module support?in my experience, this is a very common config scenario for dedicated use machines with competant (and control intensive) admins. ------------------------------------------------------- This SF.Net email is sponsored by: YOU BE THE JUDGE. Be one of 170 Project Admins to receive an Apple iPod Mini FREE for your judgement on who ports your project to Linux PPC the best. Sponsored by IBM. Deadline: Sept. 24. Go here: http://sf.net/ppc_contest.php _______________________________________________ Xen-devel mailing list Xen-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/xen-devel
On Tuesday 21 September 2004 07:36 pm, Keir Fraser wrote:> > I do see this in the syslog, which appears strange to me: > > > > Xen1 kernel: Symbols match kernel version 2.6.8. > > Xen1 kernel: No module symbols loaded - kernel modules not enabled. > > You built a kernel with no module support?I followed the instructions in the Xen v2.0 user''s manual: ''make world'', ''make install''. :o) I haven''t tried to do anything more sophisticated yet. Once I have Xen working, I''ll muck around with customizing my kernel builds.> > > Also: > > > > Xen1 kernel: Kernel command line: /boot/vmlinuz-2.6.8.1-xen0 > > root=/dev/sda1 ro console=tty0 console=ttyS0 > > Xen1 kernel: Unknown boot option `/boot/vmlinuz-2.6.8.1-xen0'' : ignoring > > That looks like a bug in our handling of the command line. We should > strip the kernel-image name.Glad to point it out then!> > By grub boot instructions are: > > > > kernel /boot/xen.gz dom0_mem=131072 com21=115200,8n1 > > module /boot/vmlinuz-2.6.8.1-xen0 root=/dev/sda1 ro console=tty0 > > console=ttyS0 > > > > Is this not correct for the 2.6.x kernels? > In general, handling of two ''console='' commands is a bit suspect -- > this is true of vanilla Linux as well. IT''s not always obvious where > your boot messages will go after init starts. :-) > > Apart from that it looks fine.This also is in the v2.0 user''s manual. Am I right in thinking it needs a bit of editing? I''ll remove one of them then. Thanks Keir! Paul. ------------------------------------------------------- This SF.Net email is sponsored by: YOU BE THE JUDGE. Be one of 170 Project Admins to receive an Apple iPod Mini FREE for your judgement on who ports your project to Linux PPC the best. Sponsored by IBM. Deadline: Sept. 24. Go here: http://sf.net/ppc_contest.php _______________________________________________ Xen-devel mailing list Xen-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/xen-devel
On Tuesday 21 September 2004 07:37 pm, Ian Pratt wrote:> > > With today''s build, my domain 0 crashes during boot when it tries to > > > bring eth0 up (it''s an E100). > > > > > > cb->prev (eax) is NULL in e100_exec_cb() (e100.c:827). Just from code > > > inspection, I don''t see how this can be. e100_alloc_cbs() was just > > > called, which looks like it should have correctly linked up all the > > > cb->prev/cb->next pointers. > > > > > > Has anyone else seen this? > > Yep -- I can reproduce. It appears to be something e100 specific, > as I''ve tested that tg3, e1000 and 3c95x all work fine.Ooh! Looks like I have a different problem then! Any ideas? I imagine it could be the no modules issue. I''ll investigate over the next few hours.> > Should be easy to fix. > > Ian------------------------------------------------------- This SF.Net email is sponsored by: YOU BE THE JUDGE. Be one of 170 Project Admins to receive an Apple iPod Mini FREE for your judgement on who ports your project to Linux PPC the best. Sponsored by IBM. Deadline: Sept. 24. Go here: http://sf.net/ppc_contest.php _______________________________________________ Xen-devel mailing list Xen-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/xen-devel
> On Tuesday 21 September 2004 07:37 pm, Ian Pratt wrote: > > > > With today''s build, my domain 0 crashes during boot when it tries to > > > > bring eth0 up (it''s an E100). > > > > > > > > cb->prev (eax) is NULL in e100_exec_cb() (e100.c:827). Just from code > > > > inspection, I don''t see how this can be. e100_alloc_cbs() was just > > > > called, which looks like it should have correctly linked up all the > > > > cb->prev/cb->next pointers. > > > > > > > > Has anyone else seen this? > > > > Yep -- I can reproduce. It appears to be something e100 specific, > > as I''ve tested that tg3, e1000 and 3c95x all work fine. > > Ooh! Looks like I have a different problem then! Any ideas? I imagine it could > be the no modules issue. I''ll investigate over the next few hours.Definitely only have one ''console='' option on DOM0''s command line. It may be that some infomration is only getting output to a device that you are not looking at. It''s very unlikely that the machine will reboot with no visible error message at all. Are you viewing DOM0 booting over serial line or on the VGA console? If the former, then specify console=ttyS0 on DOM0''s command line. If the latter then specify console=tty0. Not that for all other domains you should always specify console=tty0. -- Keir ------------------------------------------------------- This SF.Net email is sponsored by: YOU BE THE JUDGE. Be one of 170 Project Admins to receive an Apple iPod Mini FREE for your judgement on who ports your project to Linux PPC the best. Sponsored by IBM. Deadline: Sept. 24. Go here: http://sf.net/ppc_contest.php _______________________________________________ Xen-devel mailing list Xen-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/xen-devel
> I am having problems rebooting the xen guest OS using the build from the > 28 Aug 2004.I''d certainly upgrade before doing anything further. There''s been some useful bug fixes.> Initialising Xen virtual ethernet frontend driver. > [XEN] Failed to connect all virtual interfaces: err=-100 > IP-Config: Device `eth0'' not found. > > I am using dummy0 on the bridge. > Is this something that may have been fixed in newer versions?Why do you need to use dummy0 on the bridge? Are you doing this in lieu of a LAN interface? Can you look in /var/log/xend.* to see if anything is being logged as to why the netfront driver isn''t being connected. Are you seeing a vif appear in domain 0 if you do an ifconfig to list them?> Also, the hole box also seems to break stop functioning some times, when > there is heavy network load. I will probably have to select debug when > compiling to figure that out.This should be fixed in newer builds. Ian ------------------------------------------------------- This SF.Net email is sponsored by: YOU BE THE JUDGE. Be one of 170 Project Admins to receive an Apple iPod Mini FREE for your judgement on who ports your project to Linux PPC the best. Sponsored by IBM. Deadline: Sept. 24. Go here: http://sf.net/ppc_contest.php _______________________________________________ Xen-devel mailing list Xen-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/xen-devel
> Hi, > > I am having problems rebooting the xen guest OS using the build from the > 28 Aug 2004. > > I get this following trace, where it then stops.You have stale config files. Do a ''make mrproper ; make world'' at the root of the xen repository. -- Keir ------------------------------------------------------- This SF.Net email is sponsored by: YOU BE THE JUDGE. Be one of 170 Project Admins to receive an Apple iPod Mini FREE for your judgement on who ports your project to Linux PPC the best. Sponsored by IBM. Deadline: Sept. 24. Go here: http://sf.net/ppc_contest.php _______________________________________________ Xen-devel mailing list Xen-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/xen-devel