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Message-ID: <20100921190525.GD4573@davabel.touk.pl> Date: Tue, 21 Sep 2010 21:05:25 +0200 From: Paweł Zuzelski <pawelz@...-linux.org> To: Jeremy Fitzhardinge <jeremy.fitzhardinge@...rix.com> Cc: lkml <linux-kernel@...r.kernel.org>, virtualization@...ts.osdl.org, xen-devel@...ts.xensource.com Subject: PROBLEM: [BISECTED] 2.6.35.5 xen domU panics just after the boot Hello, kernels 2.6.35.5 and 2.6.32.22 xen domU panics at the very begining of the boot process. I have bisected it to a single commit, and the first bad commit is: [fb412a178502dc498430723b082a932f797e4763] xen: use percpu interrupts for IPIs and VIRQs kernel v2.6.35.5 with reverted this commit works for me. 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 in domU only. 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) [ 0.000000] SLUB: Genslabs=14, HWalign=64, Order=0-3, MinObjects=0, CPUs=2, Nodes=1 [ 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 dereference at (null) [ 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: 0000000000000000 [ 0.000000] RDX: 0000000000000000 RSI: ffffffff818c7958 RDI: 0000000000000000 [ 0.000000] RBP: ffffffff81601d88 R08: ffffea00001b22d8 R09: 000000000000001a [ 0.000000] R10: 0000000000000000 R11: 0000000000006477 R12: ffffffff81623280 [ 0.000000] R13: 0000000000000000 R14: 00000000ffffffea R15: 0000000000000000 [ 0.000000] FS: 0000000000000000(0000) GS:ffff880001987000(0000) knlGS:0000000000000000 [ 0.000000] CS: e033 DS: 0000 ES: 0000 CR0: 000000008005003b [ 0.000000] CR2: 0000000000000000 CR3: 00000000016b9000 CR4: 0000000000002620 [ 0.000000] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 0.000000] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 [ 0.000000] Process swapper (pid: 0, threadinfo ffffffff81600000, task ffffffff816c1020) [ 0.000000] Stack: [ 0.000000] ffffffff8107c849 0000000000000000 ffff880007c0d000 ffffffff81601da8 [ 0.000000] <0> ffffffff8107c829 ffffffff8133d3fb ffffffff81623280 ffffffff81601df8 [ 0.000000] <0> ffffffff8107c033 ffffffff816202e4 ffffffff816232e4 ffffffff8100572f [ 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/0x24 [ 0.000000] [<ffffffff8107c033>] __setup_irq+0x1ab/0x2d8 [ 0.000000] [<ffffffff8100572f>] ? xen_restore_fl_direct_end+0x0/0x1 [ 0.000000] [<ffffffff810052bb>] ? xen_timer_interrupt+0x0/0x17a [ 0.000000] [<ffffffff8107c278>] request_threaded_irq+0x118/0x146 [ 0.000000] [<ffffffff8125dda5>] bind_virq_to_irqhandler+0x146/0x168 [ 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+0xb1/0xb5 [ 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 idle task! [ 0.000000] Pid: 0, comm: swapper Tainted: G D 2.6.35.5 #1 [ 0.000000] Call Trace: [ 0.000000] [<ffffffff8133bae9>] panic+0x86/0xfa [ 0.000000] [<ffffffff8103c5c6>] do_exit+0x6d/0x77e [ 0.000000] [<ffffffff8133d43f>] ? _raw_spin_unlock_irqrestore+0x11/0x13 [ 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/0x1ad [ 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/0x24 [ 0.000000] [<ffffffff8107c033>] __setup_irq+0x1ab/0x2d8 [ 0.000000] [<ffffffff8100572f>] ? xen_restore_fl_direct_end+0x0/0x1 [ 0.000000] [<ffffffff810052bb>] ? xen_timer_interrupt+0x0/0x17a [ 0.000000] [<ffffffff8107c278>] request_threaded_irq+0x118/0x146 [ 0.000000] [<ffffffff8125dda5>] bind_virq_to_irqhandler+0x146/0x168 [ 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+0xb1/0xb5 [ 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@...ian.org) (gcc version 4.1.3 20080704 (prerelease) (Debian 4.1.2-25)) #1 SMP Thu Aug 19 01:12:45 UTC 2010 -- Regards, Paweł Zuzelski -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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