Re: [Xen-users] Kernel panic when using Xen-3.3.0 fs-backend and Mini-OS in Ubuntu 8.04

[Dana Rawding <dana@xxxxxxxxxxx>]

Wei,

Get off the Ubuntu 2.6.24 kernels.  I had nothing but problems with them, 
especially .24-26.  Very buggy.  I have been using 2.6.31.6 from Stacklet and 
things have been rock solid ever since.  There are a lot of of other kernels 
available as well if your machine is 64 bit.  Just search the list or check the 
wiki.

Good luck,
Dana


On Apr 14, 2010, at 11:04 PM, Wei LIU wrote:

> Hi, all
> 
> I'm testing Mini-OS's fs-front driver and Xen-3.3.0's fs-backend.
> Kernel version is 2.6.24-26-xen, a shipped version of Ubuntu 8.04.
> 
> I uncommented line 1173 in extras/mini-os/fs-front.c, so Mini-OS
> should create "fs-tester" thread to do some read/write stuff.
> Unfortunately, I got kernel panic. If I don't create that testing
> thread, I won't get a kernel panic.
> 
> It seems that fs-backend crashes, and the causes kernel panic.
> 
> How can I fix this problem? Is that a kernel bug?
> 
> Any reply is welcomed.
> 
> Wei LIU
> 2010-04-15
> 
> 
> (XEN) mm.c:2850:d0 Grant map attempted to update a non-L1 page
> (XEN) mm.c:2850:d0 Grant map attempted to update a non-L1 page
> (XEN) mm.c:2850:d0 Grant map attempted to update a non-L1 page
> [29465.879731] general protection fault: 0000 [#1] SMP
> [29465.882297] Modules linked in: bridge ipv6 iptable_filter ip_tables
> x_tables lp loop af_packet 8250_pnp parport_pc 8250 serial_core
> parport evdev serio_raw psmouse container ac button i2c_piix4 i2c_core
> intel_agp shpchp pci_hotplug agpgart ext3 jbd mbcache sr_mod cdrom
> pata_acpi sg sd_mod ata_generic floppy ehci_hcd uhci_hcd pcnet32 mii
> usbcore mptspi mptscsih mptbase scsi_transport_spi ata_piix libata
> scsi_mod thermal processor fan fuse
> [29465.973564]
> [29465.995103] Pid: 9324, comm: fs-backend Not tainted (2.6.24-26-xen #1)
> [29465.997319] EIP: 0061:[<c016c1b0>] EFLAGS: 00010296 CPU: 0
> [29465.999305] EIP is at do_wp_page+0x100/0x9f0
> [29466.000889] EAX: f57f7000 EBX: f57f7000 ECX: 00000400 EDX: 80000000
> [29466.003001] ESI: fb531000 EDI: f57f7000 EBP: fb531000 ESP: ec4fbd38
> [29466.025550]  DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0069
> [29466.027421] Process fs-backend (pid: 9324, ti=ec4fa000
> task=ea4962f0 task.ti=ec4fa000)
> [29466.029946] Stack: 12dbe065 00000000 cbb0569d 00000006 b7f52000
> ec5ab9bc ec6f2ac0 00000000
> [29466.056041]        00000000 c1c2ffe0 ed40c0c0 c018f8a5 12dbe065
> 00000000 f57f4000 c1d46620
> [29466.061855]        c0464fa0 04a7d061 80000000 ed2ac234 00000001
> 04a7d067 c1d30fac f57f4a90
> [29466.087922] Call Trace:
> [29466.089533]  [<c018f8a5>] link_path_walk+0x65/0xc0
> [29466.091689]  [<c01717ba>] handle_mm_fault+0xc5a/0x1360
> [29466.093875]  [<c019bc73>] mntput_no_expire+0x13/0x70
> [29466.116265]  [<c019bc73>] mntput_no_expire+0x13/0x70
> [29466.118381]  [<c0276e46>] tty_ldisc_deref+0x46/0x70
> [29466.120514]  [<c032a27e>] do_page_fault+0x35e/0xe70
> [29466.122610]  [<c01f6047>] apparmor_inode_permission+0x47/0x70
> [29466.145325]  [<c0197138>] __d_path+0x138/0x210
> [29466.147250]  [<c019bc73>] mntput_no_expire+0x13/0x70
> [29466.149265]  [<c01988a6>] d_path+0xd6/0xf0
> [29466.151148]  [<c0329f20>] do_page_fault+0x0/0xe70
> [29466.153184]  [<c0328bc5>] error_code+0x35/0x40
> [29466.175954]  [<c019007b>] do_unlinkat+0xcb/0x140
> [29466.177935]  [<c021093a>] __copy_to_user_ll+0x3a/0x70
> [29466.180021]  [<c01a0827>] seq_read+0x1a7/0x290
> [29466.181980]  [<c01a0680>] seq_read+0x0/0x290
> [29466.183846]  [<c0185f17>] vfs_read+0xb7/0x170
> [29466.206450]  [<c0186471>] sys_read+0x41/0x70
> [29466.208426]  [<c0105832>] syscall_call+0x7/0xb
> [29466.210455]  =======================
> [29466.211844] Code: 00 00 8b 44 24 3c ba 03 00 00 00 e8 eb d3 fa ff
> ba 04 00 00 00 89 c5 8b 44 24 24 89 ee e8 d9 d3 fa ff b9 00 04 00 00
> 89 c3 89 c7 <f3> a5 ba 03 00 00 00 89 e8 e8 02 d1 fa ff ba 04 00 00 00
> 89 d8
> [29466.301195] EIP: [<c016c1b0>] do_wp_page+0x100/0x9f0 SS:ESP 0069:ec4fbd38
> [29466.304157] ---[ end trace bcad1592f35abc4d ]---
> [29466.326567] note: fs-backend[9324] exited with preempt_count 2
> [29466.328563] BUG: scheduling while atomic: fs-backend/9324/0x10000002
> [29466.330651] Pid: 9324, comm: fs-backend Tainted: G      D 2.6.24-26-xen #1
> [29466.332915]  [<c0326dd8>] schedule+0x318/0x640
> [29466.355570]  [<c0126573>] __call_console_drivers+0x53/0x60
> [29466.357850]  [<c0126ee1>] vprintk+0x1f1/0x3d0
> [29466.359762]  [<c01222a3>] __cond_resched+0x13/0x40
> [29466.361818]  [<c0327177>] cond_resched+0x27/0x30
> [29466.363804]  [<c018190c>] kmem_cache_alloc+0xdc/0x100
> [29466.386528]  [<c015c0d4>] taskstats_exit+0x1c4/0x330
> [29466.388636]  [<c0129dfe>] do_exit+0x15e/0x890
> [29466.390601]  [<c01270db>] printk+0x1b/0x20
> [29466.392483]  [<c01063d7>] die+0x287/0x290
> [29466.394317]  [<c0328e20>] do_general_protection+0x0/0x190
> [29466.417486]  [<c0328bc5>] error_code+0x35/0x40
> [29466.419481]  [<c016c1b0>] do_wp_page+0x100/0x9f0
> [29466.421479]  [<c018f8a5>] link_path_walk+0x65/0xc0
> [29466.423566]  [<c01717ba>] handle_mm_fault+0xc5a/0x1360
> [29466.446134]  [<c019bc73>] mntput_no_expire+0x13/0x70
> [29466.448132]  [<c019bc73>] mntput_no_expire+0x13/0x70
> [29466.450227]  [<c0276e46>] tty_ldisc_deref+0x46/0x70
> [29466.452410]  [<c032a27e>] do_page_fault+0x35e/0xe70
> [29466.454573]  [<c01f6047>] apparmor_inode_permission+0x47/0x70
> [29466.477547]  [<c0197138>] __d_path+0x138/0x210
> [29466.479538]  [<c019bc73>] mntput_no_expire+0x13/0x70
> [29466.481660]  [<c01988a6>] d_path+0xd6/0xf0
> [29466.483552]  [<c0329f20>] do_page_fault+0x0/0xe70
> [29466.506394]  [<c0328bc5>] error_code+0x35/0x40
> [29466.508426]  [<c019007b>] do_unlinkat+0xcb/0x140
> [29466.510464]  [<c021093a>] __copy_to_user_ll+0x3a/0x70
> [29466.512572]  [<c01a0827>] seq_read+0x1a7/0x290
> [29466.514493]  [<c01a0680>] seq_read+0x0/0x290
> [29466.536834]  [<c0185f17>] vfs_read+0xb7/0x170
> [29466.538787]  [<c0186471>] sys_read+0x41/0x70
> [29466.540750]  [<c0105832>] syscall_call+0x7/0xb
> [29466.542605]  =======================
> [29466.568445] ------------[ cut here ]------------
> [29466.570263] kernel BUG at
> /build/buildd/linux-2.6.24/debian/build/custom-source-xen/arch/x86/mm/highmem_32-xen.c:42!
> [29466.573525] invalid opcode: 0000 [#2] SMP
> [29466.596241] Modules linked in: bridge ipv6 iptable_filter ip_tables
> x_tables lp loop af_packet 8250_pnp parport_pc 8250 serial_core
> parport evdev serio_raw psmouse container ac button i2c_piix4 i2c_core
> intel_agp shpchp pci_hotplug agpgart ext3 jbd mbcache sr_mod cdrom
> pata_acpi sg sd_mod ata_generic floppy ehci_hcd uhci_hcd pcnet32 mii
> usbcore mptspi mptscsih mptbase scsi_transport_spi ata_piix libata
> scsi_mod thermal processor fan fuse
> 
> ...[snip]...
> 
> _______________________________________________
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> Xen-users@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-users


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