Re: git commit 9fd67b4ed0714ab718f1f9bd14c344af336a6df7 (x86-64:Give vvars their own page) breaks Xen PV guests (64-bit).

From: Konrad Rzeszutek Wilk
Date: Mon Jul 25 2011 - 12:12:53 EST

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In reply to: Konrad Rzeszutek Wilk: "git commit 9fd67b4ed0714ab718f1f9bd14c344af336a6df7 (x86-64: Givevvars their own page) breaks Xen PV guests (64-bit)."
Next in thread: Andrew Lutomirski: "Re: git commit 9fd67b4ed0714ab718f1f9bd14c344af336a6df7 (x86-64: Givevvars their own page) breaks Xen PV guests (64-bit)."
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On Mon, Jul 25, 2011 at 11:54:42AM -0400, Konrad Rzeszutek Wilk wrote:
> Hey Andy,
>
> I just started testing linus/master and found out that I get this bootup error:
>
> mapping kernel into physical memory
> about to get started...
> (XEN) mm.c:940:d10 Error getting mfn 1888 (pfn 1e3e48) from L1 entry 8000000001888465 for l1e_owner=10, pg_owner=10
> (XEN) mm.c:5049:d10 ptwr_emulate: could not get_page_from_l1e()
> [ 0.000000] BUG: unable to handle kernel NULL pointer dereference at (null)
> [ 0.000000] IP: [<ffffffff8103a930>] xen_set_pte+0x20/0xe0
> [ 0.000000] PGD 0
> [ 0.000000] Oops: 0003 [#1] PREEMPT SMP
> [ 0.000000] CPU 0
> [ 0.000000] Modules linked in:
> [ 0.000000]
> [ 0.000000] Pid: 0, comm: swapper Not tainted 3.0.0-rc1-00169-gae7bd11 #1
> [ 0.000000] RIP: e030:[<ffffffff8103a930>] [<ffffffff8103a930>] xen_set_pte+0x20/0xe0
> [ 0.000000] RSP: e02b:ffffffff81801df8 EFLAGS: 00010097
> [ 0.000000] RAX: 0000000000000000 RBX: ffff88000193dff8 RCX: ffffffffff5ff000
> [ 0.000000] RDX: 0000000010000001 RSI: 8000000001888465 RDI: ffff88000193dff8
> [ 0.000000] RBP: ffffffff81801e18 R08: 0000000000000000 R09: 0000000000007ff0
> [ 0.000000] R10: aaaaaaaaaaaaaaaa R11: aaaaaaaaaaaaaaaa R12: 8000000001888465
> [ 0.000000] R13: 000000000e573000 R14: 0000000080000000 R15: 0000000000000000
> [ 0.000000] FS: 0000000000000000(0000) GS:ffffffff81889000(0000) knlGS:0000000000000000
> [ 0.000000] CS: e033 DS: 0000 ES: 0000 CR0: 0000000080050033
> [ 0.000000] CR2: 0000000000000000 CR3: 0000000001803000 CR4: 0000000000000660
> [ 0.000000] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> [ 0.000000] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
> [ 0.000000] Process swapper (pid: 0, threadinfo ffffffff81800000, task ffffffff8180b020)
> [ 0.000000] Stack:
> [ 0.000000] ffffffffff5ff000 8000000001888465 ffffffffff5ff000 8000000001888465
> [ 0.000000] ffffffff81801e38 ffffffff8106db53 0000000000000800 8000000001888465
> [ 0.000000] ffffffff81801e48 ffffffff8106dbc0 ffffffff81801e58 ffffffff810720f6
> [ 0.000000] Call Trace:
> [ 0.000000] [<ffffffff8106db53>] set_pte_vaddr_pud+0x43/0x60
> [ 0.000000] [<ffffffff8106dbc0>] set_pte_vaddr+0x50/0x70

This tiny patch fixes the bootup:

diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c
index f987bde..0e4c13c 100644
--- a/arch/x86/xen/mmu.c
+++ b/arch/x86/xen/mmu.c
@@ -1916,6 +1916,7 @@ static void xen_set_fixmap(unsigned idx, phys_addr_t phys, pgprot_t prot)
# endif
#else
case VSYSCALL_LAST_PAGE ... VSYSCALL_FIRST_PAGE:
+ case VVAR_PAGE:
#endif
case FIX_TEXT_POKE0:
case FIX_TEXT_POKE1:

However, this is what I get later on, any ideas?

(early) [ 0.000000] Initializing cgroup subsys cpuset
(early) [ 0.000000] Initializing cgroup subsys cpu
(early) [ 0.000000] Linux version 3.0.0-03370-gb6844e8-dirty (konrad@phenom) (gcc version 4.4.4 20100503 (Red Hat 4.4.4-2) (GCC) ) #1 SMP PREEMPT Mon Jul 25 12:01:00 EDT 2011
(early) [ 0.000000] Command line: console=hvc0 debug earlyprintk=xenboot
(early) [ 0.000000] ACPI in unprivileged domain disabled
(early) [ 0.000000] released 0 pages of unused memory
(early) [ 0.000000] Set 0 page(s) to 1-1 mapping.
(early) [ 0.000000] BIOS-provided physical RAM map:
(early) [ 0.000000] Xen: 0000000000000000 - 00000000000a0000 (usable)
(early) [ 0.000000] Xen: 00000000000a0000 - 0000000000100000 (reserved)
(early) [ 0.000000] Xen: 0000000000100000 - 0000000080800000 (usable)
(early) [ 0.000000] bootconsole [xenboot0] enabled
(early) [ 0.000000] NX (Execute Disable) protection: active
(early) [ 0.000000] DMI not present or invalid.
(early) [ 0.000000] e820 update range: 0000000000000000 - 0000000000010000 (early) (usable)(early) ==> (early) (reserved)(early)
(early) [ 0.000000] e820 remove range: 00000000000a0000 - 0000000000100000 (early) (usable)(early)
(early) [ 0.000000] No AGP bridge found
(early) [ 0.000000] last_pfn = 0x80800 max_arch_pfn = 0x400000000
(early) [ 0.000000] initial memory mapped : 0 - 102ea000
(early) [ 0.000000] Base memory trampoline at [ffff88000009b000] 9b000 size 20480
(early) [ 0.000000] init_memory_mapping: 0000000000000000-0000000080800000
(early) [ 0.000000] 0000000000 - 0080800000 page 4k
(early) [ 0.000000] kernel direct mapping tables up to 80800000 @ 7fbf8000-80000000
(early) [ 0.000000] xen: setting RW the range 7ff76000 - 80000000
(early) [ 0.000000] RAMDISK: 01b76000 - 102ea000
(early) [ 0.000000] No NUMA configuration found
(early) [ 0.000000] Faking a node at 0000000000000000-0000000080800000
(early) [ 0.000000] Initmem setup node 0 0000000000000000-0000000080800000
(early) [ 0.000000] NODE_DATA [000000007fffb000 - 000000007fffffff]
(early) [ 0.000000] Zone PFN ranges:
(early) [ 0.000000] DMA (early) 0x00000010 -> 0x00001000
(early) [ 0.000000] DMA32 (early) 0x00001000 -> 0x00100000
(early) [ 0.000000] Normal (early) empty
(early) [ 0.000000] Movable zone start PFN for each node
(early) [ 0.000000] early_node_map[2] active PFN ranges
(early) [ 0.000000] 0: 0x00000010 -> 0x000000a0
(early) [ 0.000000] 0: 0x00000100 -> 0x00080800
(early) [ 0.000000] On node 0 totalpages: 526224
(early) [ 0.000000] DMA zone: 56 pages used for memmap
(early) [ 0.000000] DMA zone: 5 pages reserved
(early) [ 0.000000] DMA zone: 3923 pages, LIFO batch:0
(early) [ 0.000000] DMA32 zone: 7140 pages used for memmap
(early) [ 0.000000] DMA32 zone: 515100 pages, LIFO batch:31
(early) [ 0.000000] SMP: Allowing 4 CPUs, 0 hotplug CPUs
(early) [ 0.000000] No local APIC present
(early) [ 0.000000] APIC: disable apic facility
(early) [ 0.000000] APIC: switched to apic NOOP
(early) [ 0.000000] nr_irqs_gsi: 16
(early) [ 0.000000] PM: Registered nosave memory: 00000000000a0000 - 0000000000100000
(early) [ 0.000000] Allocating PCI resources starting at 80800000 (gap: 80800000:7f800000)
(early) [ 0.000000] Booting paravirtualized kernel on Xen
(early) [ 0.000000] Xen version: 4.2-unstable (preserve-AD)
(early) [ 0.000000] setup_percpu: NR_CPUS:256 nr_cpumask_bits:256 nr_cpu_ids:4 nr_node_ids:1
(early) [ 0.000000] PERCPU: Embedded 28 pages/cpu @ffff88007fb88000 s81984 r8192 d24512 u114688
(early) [ 0.000000] pcpu-alloc: s81984 r8192 d24512 u114688 alloc=28*4096(early)
(early) [ 0.000000] pcpu-alloc: (early) [0] (early) 0 (early) [0] (early) 1 (early) [0] (early) 2 (early) [0] (early) 3 (early)
(early) [ 0.000000] Built 1 zonelists in Node order, mobility grouping on. Total pages: 519023
(early) [ 0.000000] Policy zone: DMA32
(early) [ 0.000000] Kernel command line: console=hvc0 debug earlyprintk=xenboot
(early) [ 0.000000] PID hash table entries: 4096 (order: 3, 32768 bytes)
(early) [ 0.000000] Checking aperture...
(early) [ 0.000000] No AGP bridge found
(early) [ 0.000000] Calgary: detecting Calgary via BIOS EBDA area
(early) [ 0.000000] Calgary: Unable to locate Rio Grande table in EBDA - bailing!
(early) [ 0.000000] Memory: 1809780k/2105344k available (5937k kernel code, 448k absent, 295116k reserved, 2812k data, 692k init)
(early) [ 0.000000] SLUB: Genslabs=15, HWalign=64, Order=0-3, MinObjects=0, CPUs=4, Nodes=1
(early) [ 0.000000] Preemptible hierarchical RCU implementation.
(early) [ 0.000000] NR_IRQS:16640 nr_irqs:304 16
(early) [ 0.000000] Console: colour dummy device 80x25
(early) [ 0.000000] console [tty0] enabled
[ 0.000000] console [hvc0] enabled, bootconsole disabled
(early) [ 0.000000] console [hvc0] enabled, bootconsole disabled
[ 0.000000] Xen: using vcpuop timer interface
[ 0.000000] installing Xen timer for CPU 0
[ 0.000000] Detected 3000.206 MHz processor.
[ 0.000000] Marking TSC unstable due to TSCs unsynchronized
[ 0.000999] Calibrating delay loop (skipped), value calculated using timer frequency.. 6000.41 BogoMIPS (lpj=3000206)
[ 0.000999] pid_max: default: 32768 minimum: 301
[ 0.000999] Security Framework initialized
[ 0.000999] SELinux: Initializing.
[ 0.000999] SELinux: Starting in permissive mode
[ 0.000999] Dentry cache hash table entries: 262144 (order: 9, 2097152 bytes)
[ 0.001401] Inode-cache hash table entries: 131072 (order: 8, 1048576 bytes)
[ 0.001684] Mount-cache hash table entries: 256
[ 0.001854] Initializing cgroup subsys cpuacct
[ 0.001865] Initializing cgroup subsys freezer
[ 0.001907] tseg: 0000000000
[ 0.001919] CPU: Physical Processor ID: 0
[ 0.001924] CPU: Processor Core ID: 1
[ 0.001978] SMP alternatives: switching to UP code
[ 0.002100] cpu 0 spinlock event irq 17
[ 0.002156] Performance Events:
[ 0.002162] no APIC, boot with the "lapic" boot parameter to force-enable it.
[ 0.002168] no hardware sampling interrupt available.
[ 0.002192] Broken PMU hardware detected, using software events only.
[ 0.008054] MCE: In-kernel MCE decoding enabled.
[ 0.008079] NMI watchdog disabled (cpu0): hardware events not enabled
[ 0.014023] installing Xen timer for CPU 1
[ 0.014061] cpu 1 spinlock event irq 23
[ 0.014135] SMP alternatives: switching to SMP code
[ 0.015693] NMI watchdog disabled (cpu1): hardware events not enabled
[ 0.021060] installing Xen timer for CPU 2
[ 0.021128] cpu 2 spinlock event irq 29
[ 0.021434] NMI watchdog disabled (cpu2): hardware events not enabled
[ 0.027063] installing Xen timer for CPU 3
[ 0.027108] cpu 3 spinlock event irq 35
[ 0.027359] NMI watchdog disabled (cpu3): hardware events not enabled
[ 0.029054] Brought up 4 CPUs
[ 0.029163] kworker/u:0 used greatest stack depth: 5512 bytes left
[ 0.029177] Grant table initialized
[ 0.048829] RTC time: 165:165:165, date: 165/165/65
[ 0.048893] NET: Registered protocol family 16
[ 0.049057] Extended Config Space enabled on 0 nodes
[ 0.050337] PCI: setting up Xen PCI frontend stub
[ 0.050344] PCI: pci_cache_line_size set to 64 bytes
[ 0.059043] bio: create slab <bio-0> at 0
[ 0.060045] ACPI: Interpreter disabled.
[ 0.060045] xen/balloon: Initialising balloon driver.
[ 0.060045] last_pfn = 0x80800 max_arch_pfn = 0x400000000
[ 0.063052] xen-balloon: Initialising balloon driver.
[ 0.063079] vgaarb: loaded
[ 0.064036] usbcore: registered new interface driver usbfs
[ 0.064062] usbcore: registered new interface driver hub
[ 0.064062] usbcore: registered new device driver usb
[ 0.064062] PCI: System does not support PCI
[ 0.064062] PCI: System does not support PCI
[ 0.064062] NetLabel: Initializing
[ 0.064062] NetLabel: domain hash size = 128
[ 0.064062] NetLabel: protocols = UNLABELED CIPSOv4
[ 0.064062] NetLabel: unlabeled traffic allowed by default
[ 0.065036] Switching to clocksource xen
[ 0.065243] Switched to NOHz mode on CPU #2
[ 0.065423] Switched to NOHz mode on CPU #3
[ 0.065942] Switched to NOHz mode on CPU #0
[ 0.065993] Switched to NOHz mode on CPU #1
[ 0.067462] pnp: PnP ACPI: disabled
[ 0.072379] PCI: max bus depth: 0 pci_try_num: 1
[ 0.072421] NET: Registered protocol family 2
[ 0.072609] IP route cache hash table entries: 65536 (order: 7, 524288 bytes)
[ 0.073921] TCP established hash table entries: 262144 (order: 10, 4194304 bytes)
[ 0.075229] TCP bind hash table entries: 65536 (order: 8, 1048576 bytes)
[ 0.075493] TCP: Hash tables configured (established 262144 bind 65536)
[ 0.075506] TCP reno registered
[ 0.075526] UDP hash table entries: 1024 (order: 3, 32768 bytes)
[ 0.075550] UDP-Lite hash table entries: 1024 (order: 3, 32768 bytes)
[ 0.075642] NET: Registered protocol family 1
[ 0.075869] RPC: Registered named UNIX socket transport module.
[ 0.075877] RPC: Registered udp transport module.
[ 0.075882] RPC: Registered tcp transport module.
[ 0.075887] RPC: Registered tcp NFSv4.1 backchannel transport module.
[ 0.075895] PCI: CLS 0 bytes, default 64
[ 0.076004] Trying to unpack rootfs image as initramfs...
[ 0.328726] Freeing initrd memory: 237008k freed
[ 0.390049] platform rtc_cmos: registered platform RTC device (no PNP device found)
[ 0.391356] Machine check injector initialized
[ 0.392159] microcode: CPU0: patch_level=0x010000bf
[ 0.392193] microcode: CPU1: patch_level=0x010000bf
[ 0.392278] microcode: CPU2: patch_level=0x010000bf
[ 0.392373] microcode: CPU3: patch_level=0x010000bf
[ 0.392489] microcode: Microcode Update Driver: v2.00 <tigran@xxxxxxxxxxxxxxxxxxxx>, Peter Oruba
[ 0.392997] audit: initializing netlink socket (disabled)
[ 0.393027] type=2000 audit(1311610075.824:1): initialized
[ 0.407315] HugeTLB registered 2 MB page size, pre-allocated 0 pages
[ 0.412966] VFS: Disk quotas dquot_6.5.2
[ 0.413113] Dquot-cache hash table entries: 512 (order 0, 4096 bytes)
[ 0.413840] NTFS driver 2.1.30 [Flags: R/W].
[ 0.414131] msgmni has been set to 3997
[ 0.414372] SELinux: Registering netfilter hooks
[ 0.415310] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 253)
[ 0.415327] io scheduler noop registered
[ 0.415332] io scheduler deadline registered
[ 0.415434] io scheduler cfq registered (default)
[ 0.415794] pci_hotplug: PCI Hot Plug PCI Core version: 0.5
[ 0.464230] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
[ 0.526788] Non-volatile memory driver v1.3
[ 0.526798] Linux agpgart interface v0.103
[ 0.527367] [drm] Initialized drm 1.1.0 20060810
[ 0.530271] brd: module loaded
[ 0.531723] loop: module loaded
[ 0.532369] Fixed MDIO Bus: probed
[ 0.532902] tun: Universal TUN/TAP device driver, 1.6
[ 0.532913] tun: (C) 1999-2004 Max Krasnyansky <maxk@xxxxxxxxxxxx>
[ 0.533296] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[ 0.533305] ehci_hcd: block sizes: qh 104 qtd 96 itd 192 sitd 96
[ 0.533436] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[ 0.533448] ohci_hcd: block sizes: ed 80 td 96
[ 0.533574] uhci_hcd: USB Universal Host Controller Interface driver
[ 0.533768] usbcore: registered new interface driver usblp
[ 0.533851] usbcore: registered new interface driver libusual
[ 0.534155] i8042: PNP: No PS/2 controller found. Probing ports directly.
[ 0.534978] i8042: No controller found
[ 0.535254] mousedev: PS/2 mouse device common for all mice
[ 0.575759] rtc_cmos rtc_cmos: rtc core: registered rtc_cmos as rtc0
[ 0.575892] rtc_cmos: probe of rtc_cmos failed with error -38
[ 0.576261] cpuidle: using governor ladder
[ 0.576279] cpuidle: using governor menu
[ 0.576284] EFI Variables Facility v0.08 2004-May-17
[ 0.576395] zram: num_devices not specified. Using default: 1
[ 0.576403] zram: Creating 1 devices ...
[ 0.576806] Netfilter messages via NETLINK v0.30.
[ 0.576828] nf_conntrack version 0.5.0 (16384 buckets, 65536 max)
[ 0.577133] ctnetlink v0.93: registering with nfnetlink.
[ 0.577590] ip_tables: (C) 2000-2006 Netfilter Core Team
[ 0.577641] TCP cubic registered
[ 0.577646] Initializing XFRM netlink socket
[ 0.578159] NET: Registered protocol family 10
[ 0.578734] ip6_tables: (C) 2000-2006 Netfilter Core Team
[ 0.578788] IPv6 over IPv4 tunneling driver
[ 0.579680] NET: Registered protocol family 17
[ 0.579717] Registering the dns_resolver key type
[ 0.580246] PM: Hibernation image not present or could not be loaded.
[ 0.580268] registered taskstats version 1
[ 0.580306] XENBUS: Device with no driver: device/vif/0
[ 0.580311] XENBUS: Device with no driver: device/vfb/0
[ 0.580324] XENBUS: Device with no driver: device/vkbd/0
[ 0.580338] Magic number: 1:252:3141
[ 0.580459] powernow-k8: Found 1 AMD Phenom(tm) II X6 1075T Processor (4 cpu cores) (version 2.20.00)
[ 0.580510] powernow-k8: Core Performance Boosting: on.
[ 0.580526] [Firmware Bug]: powernow-k8: No compatible ACPI _PSS objects found.
[ 0.580528] [Firmware Bug]: powernow-k8: Try again with latest BIOS.
[ 0.581017] Freeing unused kernel memory: 692k freed
[ 0.581208] Write protecting the kernel read-only data: 8192k
[ 0.584393] Freeing unused kernel memory: 184k freed
[ 0.584595] Freeing unused kernel memory: 328k freed
[ 0.585880] init[1] illegal int 0xcc from 32-bit mode ip:ffffffffff600400 cs:e033 sp:7fff230ca088 ax:ffffffffff600400 si:7faee3e822bf di:7fff230ca158
[ 0.586105] init used greatest stack depth: 5064 bytes left
[ 0.586118] Kernel panic - not syncing: Attempted to kill init!
[ 0.586126] Pid: 1, comm: init Not tainted 3.0.0-03370-gb6844e8-dirty #1
[ 0.586132] Call Trace:
[ 0.586144] [<ffffffff815bd12d>] panic+0x96/0x1ad
[ 0.586152] [<ffffffff810845d1>] ? get_parent_ip+0x11/0x50
[ 0.586160] [<ffffffff810966e8>] do_exit+0x968/0x970
[ 0.586167] [<ffffffff8109673c>] do_group_exit+0x4c/0xc0
[ 0.586175] [<ffffffff810a850f>] get_signal_to_deliver+0x20f/0x5c0
[ 0.586184] [<ffffffff810492f3>] do_signal+0x63/0x710
[ 0.586191] [<ffffffff810402b2>] ? check_events+0x12/0x20
[ 0.586198] [<ffffffff810845d1>] ? get_parent_ip+0x11/0x50
[ 0.586206] [<ffffffff815c392d>] ? sub_preempt_count+0x9d/0xd0
[ 0.586217] [<ffffffff815c03e7>] ? _raw_spin_unlock_irqrestore+0x27/0x50
[ 0.586227] [<ffffffff810a706d>] ? force_sig_info+0x9d/0x110
[ 0.586235] [<ffffffff81049a05>] do_notify_resume+0x65/0x80
[ 0.586242] [<ffffffff8104dd6e>] ? do_emulate_vsyscall+0x5e/0x190
[ 0.586249] [<ffffffff815c093c>] retint_signal+0x48/0x8c
Parsing config file /root/pv.xm
Daemon running with PID 9155
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Next message: Russell King - ARM Linux: "Re: [PATCH] dmaengine: add helper function for slave_single"
Previous message: Randy Dunlap: "Re: Build regressions/improvements in v3.0-rc7 (sound/isa/)"
In reply to: Konrad Rzeszutek Wilk: "git commit 9fd67b4ed0714ab718f1f9bd14c344af336a6df7 (x86-64: Givevvars their own page) breaks Xen PV guests (64-bit)."
Next in thread: Andrew Lutomirski: "Re: git commit 9fd67b4ed0714ab718f1f9bd14c344af336a6df7 (x86-64: Givevvars their own page) breaks Xen PV guests (64-bit)."
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]