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Package: linux-image-2.6.18-1-xen-vserver-686
Version: 2.6.18-3
Severity: minor
Tags: patch
Hi *!
When using the -xen-vserver kernel, the domU spits many errors like
this:
Nov 5 21:28:39 frontend kernel: BUG: warning at
kernel/irq/handle.c:177/__do_IRQ()
Nov 5 21:28:39 frontend kernel: [<c013f5ee>] __do_IRQ+0x45/0x160
Nov 5 21:28:39 frontend kernel: [<c01060c4>] do_IRQ+0x43/0x53
Nov 5 21:28:39 frontend kernel: [<c020ea34>] evtchn_do_upcall+0x64/0x9b
Nov 5 21:28:39 frontend kernel: [<c01049d9>] hypervisor_callback+0x3d/0x48
Nov 5 21:28:39 frontend kernel: [<c014a366>] page_address+0x1/0x81
Nov 5 21:28:39 frontend kernel: [<c014c5ae>] __handle_mm_fault+0x115/0xc21
Nov 5 21:28:39 frontend kernel: [<c0104997>] error_code+0x2b/0x30
Nov 5 21:28:39 frontend kernel: [<c0110ba2>] do_page_fault+0x39f/0x7c8
Nov 5 21:28:39 frontend kernel: [<c0116a81>] schedule_tail+0x80/0x85
Nov 5 21:28:39 frontend kernel: [<c0110803>] do_page_fault+0x0/0x7c8
Nov 5 21:28:39 frontend kernel: [<c0104997>] error_code+0x2b/0x30
Nov 5 21:28:39 frontend kernel: BUG: warning at
kernel/irq/handle.c:177/__do_IRQ()
Nov 5 21:28:39 frontend kernel: [<c013f5ee>] __do_IRQ+0x45/0x160
Nov 5 21:28:39 frontend kernel: [<c01060c4>] do_IRQ+0x43/0x53
Nov 5 21:28:39 frontend kernel: [<c020ea34>] evtchn_do_upcall+0x64/0x9b
Nov 5 21:28:39 frontend kernel: [<c01049d9>] hypervisor_callback+0x3d/0x48
With the help of #vserver I have tracked this down to a missing
__enter/leave_vx_admin() call in irq-xen.c:
- --- orig/linux-2.6-2.6.18/debian/patches/features/all/xen/fedora-36252.patch
2006-11-06 09:36:27.000000000 +0100
+++
linux-2.6-2.6.18.modified/debian/patches/features/all/xen/fedora-36252.patch
2006-11-05 22:44:50.000000000 +0100
@@ -7210,7 +7210,7 @@
diff -urN -x .hg -x .hgtags linux-2.6.18.1/arch/i386/kernel/irq-xen.c
linux-2.6.18-xen/arch/i386/kernel/irq-xen.c
--- linux-2.6.18.1/arch/i386/kernel/irq-xen.c 1970-01-01 01:00:00.000000000
+0100
+++ linux-2.6.18-xen/arch/i386/kernel/irq-xen.c 2006-09-04
16:31:00.000000000
+0200
- -@@ -0,0 +1,324 @@
+@@ -0,0 +1,328 @@
+/*
+ * linux/arch/i386/kernel/irq.c
+ *
@@ -7231,6 +7231,7 @@
+#include <linux/notifier.h>
+#include <linux/cpu.h>
+#include <linux/delay.h>
++#include <linux/vs_context.h>
+
+DEFINE_PER_CPU(irq_cpustat_t, irq_stat)
____cacheline_internodealigned_in_smp;
+EXPORT_PER_CPU_SYMBOL(irq_stat);
@@ -7268,6 +7269,7 @@
+{
+ /* high bit used in ret_from_ code */
+ int irq = ~regs->orig_eax;
++ struct vx_info_save vxis;
+#ifdef CONFIG_4KSTACKS
+ union irq_ctx *curctx, *irqctx;
+ u32 *isp;
@@ -7295,6 +7297,7 @@
+ }
+#endif
+
++ __enter_vx_admin(&vxis);
+#ifdef CONFIG_4KSTACKS
+
+ curctx = (union irq_ctx *) current_thread_info();
@@ -7333,6 +7336,7 @@
+ } else
+#endif
+ __do_IRQ(irq, regs);
++ __leave_vx_admin(&vxis);
+
+ irq_exit();
+
Using this patch i have no further BUG traces.
daniel_hozac of #vserver recommended this shell fragment to repair
missing vserver patch pieces in xen:
(23:47:36) daniel_hozac: DavidS: i usually run find . -name '*-xen.[chS]' | {
while read FILE; do f=${FILE/./}; f=${f/-xen/}; filterdiff -i "*$f" <vserver
patch> | patch $FILE; done }
Thank you for your time and work!
Regards, David
- -- System Information:
Debian Release: 4.0
APT prefers unstable
APT policy: (500, 'unstable'), (1, 'experimental')
Architecture: i386 (i686)
Shell: /bin/sh linked to /bin/bash
Kernel: Linux 2.6.18-1-vserver-686
Locale: LANG=C, LC_CTYPE=de_AT.UTF-8 (charmap=UTF-8)
Versions of packages linux-image-2.6.18-1-xen-vserver-686 depends on:
ii initramfs-tools 0.85 tools for generating an initramfs
ii linux-modules-2.6.18-1-xen-vs 2.6.18-3 Linux 2.6.18 modules on
PPro/Celer
Versions of packages linux-image-2.6.18-1-xen-vserver-686 recommends:
ii libc6-xen 2.3.6.ds1-7 GNU C Library: Shared libraries
[X
- -- no debconf information
- --
- - hallo... wie gehts heute?
- - *hust* gut *rotz* *keuch*
- - gott sei dank kommunizieren wir über ein septisches medium ;)
-- Matthias Leeb, Uni f. angewandte Kunst, 2005-02-15
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