Re: [Xen-devel] PROBLEM: [BISECTED] 2.6.35.5 xen domU panics just after the boot
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From: Jeremy Fitzhardinge <hidden>
Date: 2010-09-24 19:04:34
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On 09/23/2010 07:13 PM, Dan Magenheimer wrote:
Jeremy -- FYI, I think I've also seen this problem, or something similar, but ONLY on a Nehalem box (and only intermittently), not on my Core 2 Duo boxen. The Nehalem box is an SDP so I had assumed that it was something to do with that, but maybe not. Maybe some feature is "leaking through" to the guest. Hyperthreading? MSI? EPT? Anyway, if you have a newer box, you might try reproducing on that, rather than your usual development box (which IIRC was a Core 2 Duo laptop?)
No, this bug turned out to be a simple typo in the patch that got merged
into the upstream stable kernels.
J
quoted
-----Original Message----- From: Jeremy Fitzhardinge [mailto:jeremy@goop.org] Sent: Thursday, September 23, 2010 6:02 PM To: Pawel Zuzelski Cc: virtualization@lists.osdl.org; Jeremy Fitzhardinge; xen- devel@lists.xensource.com; lkml Subject: Re: [Xen-devel] PROBLEM: [BISECTED] 2.6.35.5 xen domU panics just after the boot On 09/21/2010 12:05 PM, Paweł Zuzelski wrote:quoted
Hello, kernels 2.6.35.5 and 2.6.32.22 xen domU panics at the very beginingof thequoted
boot process. I have bisected it to a single commit, and the first bad commit is: [fb412a178502dc498430723b082a932f797e4763] xen: use percpu interruptsfor IPIs and VIRQsquoted
kernel v2.6.35.5 with reverted this commit works for me.Thanks very much for doing that. I'll have to work out what's going on (obviously it doesn't do it for me). Jquoted
Here are the kernel configs I was using: http://carme.pld-linux.org/~pawelz/kernel-2.6.35.5-domU-config http://carme.pld-linux.org/~pawelz/kernel-2.6.32.22-domU-config As you can see they are stripped down configs, intended to run indomU only.quoted
I was testing it with the very simple domU configuration: kernel = '/srv/xen/bzImage' memory = '128' vcpus = 2 name = 'test' on_poweroff = 'destroy' on_reboot = 'restart' on_crash = 'restart' Here is the full output of kernel 2.6.35.5: Using config file "/etc/xen/test". Started domain test [ 0.000000] Policy zone: DMA32 [ 0.000000] Kernel command line: [ 0.000000] PID hash table entries: 512 (order: 0, 4096 bytes) [ 0.000000] Subtract (33 early reservations) [ 0.000000] #1 [0001976000 - 0001987000] XEN PAGETABLES [ 0.000000] #2 [0001000000 - 00019125f8] TEXT DATA BSS [ 0.000000] #3 [0001933000 - 0001976000] XEN START INFO [ 0.000000] #4 [0000010000 - 0000012000] TRAMPOLINE [ 0.000000] #5 [0000012000 - 0000040000] PGTABLE [ 0.000000] #6 [0001912600 - 0001917600] NODE_DATA [ 0.000000] #7 [0001917600 - 0001918600] BOOTMEM [ 0.000000] #8 [0001918600 - 0001918618] BOOTMEM [ 0.000000] #9 [0001919000 - 000191a000] BOOTMEM [ 0.000000] #10 [000191a000 - 000191b000] BOOTMEM [ 0.000000] #11 [000191b000 - 000191c000] BOOTMEM [ 0.000000] #12 [0002200000 - 00023c0000] MEMMAP 0 [ 0.000000] #13 [0001918640 - 00019187c0] BOOTMEM [ 0.000000] #14 [000191c000 - 000191cc00] BOOTMEM [ 0.000000] #15 [000191d000 - 000191e000] BOOTMEM [ 0.000000] #16 [000191e000 - 000191f000] BOOTMEM [ 0.000000] #17 [000191f000 - 0001920000] BOOTMEM [ 0.000000] #18 [00019187c0 - 00019188a0] BOOTMEM [ 0.000000] #19 [00019188c0 - 0001918928] BOOTMEM [ 0.000000] #20 [0001918940 - 00019189a8] BOOTMEM [ 0.000000] #21 [00019189c0 - 0001918a28] BOOTMEM [ 0.000000] #22 [0001918a40 - 0001918a41] BOOTMEM [ 0.000000] #23 [0001918a80 - 0001918a81] BOOTMEM [ 0.000000] #24 [0001987000 - 00019c1000] BOOTMEM [ 0.000000] #25 [0001918ac0 - 0001918ac8] BOOTMEM [ 0.000000] #26 [0001918b00 - 0001918b08] BOOTMEM [ 0.000000] #27 [0001918b40 - 0001918b48] BOOTMEM [ 0.000000] #28 [0001918b80 - 0001918b90] BOOTMEM [ 0.000000] #29 [0001918bc0 - 0001918cc0] BOOTMEM [ 0.000000] #30 [0001918cc0 - 0001918d08] BOOTMEM [ 0.000000] #31 [0001918d40 - 0001918d88] BOOTMEM [ 0.000000] #32 [0001920000 - 0001921000] BOOTMEM [ 0.000000] Memory: 118724k/131072k available (3327k kernel code,448k absent, 11900k reserved, 3931k data, 440k init)quoted
[ 0.000000] SLUB: Genslabs=14, HWalign=64, Order=0-3,MinObjects=0, CPUs=2, Nodes=1quoted
[ 0.000000] Hierarchical RCU implementation. [ 0.000000] RCU-based detection of stalled CPUs is disabled. [ 0.000000] Verbose stalled-CPUs detection is disabled. [ 0.000000] NR_IRQS:2304 [ 0.000000] Console: colour dummy device 80x25 [ 0.000000] console [tty0] enabled [ 0.000000] console [hvc0] enabled [ 0.000000] installing Xen timer for CPU 0 [ 0.000000] BUG: unable to handle kernel NULL pointer dereferenceat (null)quoted
[ 0.000000] IP: [<(null)>] (null) [ 0.000000] PGD 0 [ 0.000000] Oops: 0010 [#1] SMP [ 0.000000] last sysfs file: [ 0.000000] CPU 0 [ 0.000000] Modules linked in: [ 0.000000] [ 0.000000] Pid: 0, comm: swapper Not tainted 2.6.35.5 #1 / [ 0.000000] RIP: e030:[<0000000000000000>] [<(null)>] (null) [ 0.000000] RSP: e02b:ffffffff81601d70 EFLAGS: 00010082 [ 0.000000] RAX: ffffffff818fdb50 RBX: 0000000000000000 RCX:0000000000000000quoted
[ 0.000000] RDX: 0000000000000000 RSI: ffffffff818c7958 RDI:0000000000000000quoted
[ 0.000000] RBP: ffffffff81601d88 R08: ffffea00001b22d8 R09:000000000000001aquoted
[ 0.000000] R10: 0000000000000000 R11: 0000000000006477 R12:ffffffff81623280quoted
[ 0.000000] R13: 0000000000000000 R14: 00000000ffffffea R15:0000000000000000quoted
[ 0.000000] FS: 0000000000000000(0000) GS:ffff880001987000(0000)knlGS:0000000000000000quoted
[ 0.000000] CS: e033 DS: 0000 ES: 0000 CR0: 000000008005003b [ 0.000000] CR2: 0000000000000000 CR3: 00000000016b9000 CR4:0000000000002620quoted
[ 0.000000] DR0: 0000000000000000 DR1: 0000000000000000 DR2:0000000000000000quoted
[ 0.000000] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7:0000000000000400quoted
[ 0.000000] Process swapper (pid: 0, threadinfo ffffffff81600000,task ffffffff816c1020)quoted
[ 0.000000] Stack: [ 0.000000] ffffffff8107c849 0000000000000000 ffff880007c0d000ffffffff81601da8quoted
[ 0.000000] <0> ffffffff8107c829 ffffffff8133d3fb ffffffff81623280ffffffff81601df8quoted
[ 0.000000] <0> ffffffff8107c033 ffffffff816202e4 ffffffff816232e4ffffffff8100572fquoted
[ 0.000000] Call Trace: [ 0.000000] [<ffffffff8107c849>] ? default_enable+0x1a/0x28 [ 0.000000] [<ffffffff8107c829>] default_startup+0x19/0x1f [ 0.000000] [<ffffffff8133d3fb>] ?_raw_spin_lock_irqsave+0xd/0x24quoted
[ 0.000000] [<ffffffff8107c033>] __setup_irq+0x1ab/0x2d8 [ 0.000000] [<ffffffff8100572f>] ?xen_restore_fl_direct_end+0x0/0x1quoted
[ 0.000000] [<ffffffff810052bb>] ? xen_timer_interrupt+0x0/0x17a [ 0.000000] [<ffffffff8107c278>] request_threaded_irq+0x118/0x146 [ 0.000000] [<ffffffff8125dda5>]bind_virq_to_irqhandler+0x146/0x168quoted
[ 0.000000] [<ffffffff810052bb>] ? xen_timer_interrupt+0x0/0x17a [ 0.000000] [<ffffffff810055ee>] xen_setup_timer+0x59/0x9d [ 0.000000] [<ffffffff81731b68>] xen_time_init+0x7b/0x89 [ 0.000000] [<ffffffff81731ead>] x86_late_time_init+0xa/0x11 [ 0.000000] [<ffffffff8172eb49>] start_kernel+0x30b/0x38d [ 0.000000] [<ffffffff8172e2c6>]x86_64_start_reservations+0xb1/0xb5quoted
[ 0.000000] [<ffffffff817313e8>] xen_start_kernel+0x508/0x50f [ 0.000000] Code: Bad RIP value. [ 0.000000] RIP [<(null)>] (null) [ 0.000000] RSP <ffffffff81601d70> [ 0.000000] CR2: 0000000000000000 [ 0.000000] ---[ end trace 4eaa2a86a8e2da22 ]--- [ 0.000000] Kernel panic - not syncing: Attempted to kill the idletask!quoted
[ 0.000000] Pid: 0, comm: swapper Tainted: G D 2.6.35.5#1quoted
[ 0.000000] Call Trace: [ 0.000000] [<ffffffff8133bae9>] panic+0x86/0xfa [ 0.000000] [<ffffffff8103c5c6>] do_exit+0x6d/0x77e [ 0.000000] [<ffffffff8133d43f>] ?_raw_spin_unlock_irqrestore+0x11/0x13quoted
[ 0.000000] [<ffffffff8103ac55>] ? kmsg_dump+0x11e/0x139 [ 0.000000] [<ffffffff8100b936>] oops_end+0x8f/0x94 [ 0.000000] [<ffffffff810239cc>] no_context+0x1f4/0x203 [ 0.000000] [<ffffffff81023b65>]__bad_area_nosemaphore+0x18a/0x1adquoted
[ 0.000000] [<ffffffff81023b96>] bad_area_nosemaphore+0xe/0x10 [ 0.000000] [<ffffffff81023f10>] do_page_fault+0x115/0x229 [ 0.000000] [<ffffffff8133daf5>] page_fault+0x25/0x30 [ 0.000000] [<ffffffff8107c849>] ? default_enable+0x1a/0x28 [ 0.000000] [<ffffffff8107c829>] default_startup+0x19/0x1f [ 0.000000] [<ffffffff8133d3fb>] ?_raw_spin_lock_irqsave+0xd/0x24quoted
[ 0.000000] [<ffffffff8107c033>] __setup_irq+0x1ab/0x2d8 [ 0.000000] [<ffffffff8100572f>] ?xen_restore_fl_direct_end+0x0/0x1quoted
[ 0.000000] [<ffffffff810052bb>] ? xen_timer_interrupt+0x0/0x17a [ 0.000000] [<ffffffff8107c278>] request_threaded_irq+0x118/0x146 [ 0.000000] [<ffffffff8125dda5>]bind_virq_to_irqhandler+0x146/0x168quoted
[ 0.000000] [<ffffffff810052bb>] ? xen_timer_interrupt+0x0/0x17a [ 0.000000] [<ffffffff810055ee>] xen_setup_timer+0x59/0x9d [ 0.000000] [<ffffffff81731b68>] xen_time_init+0x7b/0x89 [ 0.000000] [<ffffffff81731ead>] x86_late_time_init+0xa/0x11 [ 0.000000] [<ffffffff8172eb49>] start_kernel+0x30b/0x38d [ 0.000000] [<ffffffff8172e2c6>]x86_64_start_reservations+0xb1/0xb5quoted
[ 0.000000] [<ffffffff817313e8>] xen_start_kernel+0x508/0x50f Additional info: arch: x86_64 cpu: Intel(R) Xeon(R) CPU E5345 @ 2.33GHz xen: 3.2.1 dom0: Linux version 2.6.26-2-xen-amd64 (Debian 2.6.26-24lenny1) (dannf@debian.org) (gcc version 4.1.3 20080704 (prerelease) (Debian 4.1.2-25)) #1 SMP Thu Aug 19 01:12:45 UTC 2010_______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel_______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel