[Xen-users] BUG after create snapshot in a script - Xen 4.01 - 2.6.32-5-xen-amd64

[Rémi BERNIER <R.BERNIER@xxxxxxxxxxx>]

Hello list,

I have met a Bug in the debian squeeze
with the kernel 2.6.32-5-xen-amd64 and Xen 4.0.1
I have try with two differents environement,
but i have the same result...
I haven't this bug when i use just the
kernel  2.6.32-5-xen-amd64 without the hypervisor Xen 4.0.1 and on
the debian lenny with the kernel 2.6.26-2-xen-amd64 + Xen 3.2.1.
When i run a script who create a snapshot
of a LV, i have this Bug error:

Just after the "lvcreate -s -n
Snap -L 1G /dev/data/svsqueeze" in the script

May 10 12:39:29 asusf3ja kernel: [  
55.006801] BUG: unable to handle kernel paging request at ffff88000f0cc010
May 10 12:39:29 asusf3ja kernel: [  
55.006921] IP: [<ffffffff8100e428>] xen_set_pmd+0x15/0x2c
May 10 12:39:29 asusf3ja kernel: [  
55.007000] PGD 1002067 PUD 1006067 PMD 6a067 PTE 801000000f0cc065
May 10 12:39:29 asusf3ja kernel: [  
55.007162] Oops: 0003 [#1] SMP
May 10 12:39:29 asusf3ja kernel: [  
55.007261] last sysfs file: /sys/devices/virtual/block/dm-0/dm/suspended
May 10 12:39:29 asusf3ja kernel: [  
55.007308] CPU 1
May 10 12:39:29 asusf3ja kernel: [  
55.007374] Modules linked in: dm_snapshot sco bridge stp bnep rfcomm l2cap
bluetooth parport_pc ppdev cpufreq_userspace cpufreq_stats cpufreq_powersave
lp cpufreq_conservative parport xen_evtchn xenfs uinput fuse loop firewire_sbp2
snd_hda_codec_si3054 snd_hda_codec_realtek snd_hda_intel snd_hda_codec
snd_hwdep arc4 snd_pcm radeon ecb joydev snd_timer ttm drm_kms_helper stkwebcam
i2c_i801 snd soundcore iwl3945 drm i2c_algo_bit videodev v4l1_compat v4l2_compat_ioctl32
iwlcore snd_page_alloc i2c_core psmouse pcspkr evdev rng_core asus_laptop
mac80211 serio_raw cfg80211 rfkill battery ac button video output processor
acpi_processor ext4 mbcache jbd2 crc16 dm_mod sg sr_mod cdrom sd_mod crc_t10dif
ata_generic uhci_hcd sdhci_pci sdhci ehci_hcd ata_piix thermal firewire_ohci
libata mmc_core led_class thermal_sys ricoh_mmc firewire_core crc_itu_t
r8169 mii usbcore nls_base scsi_mod [last unloaded: scsi_wait_scan]
May 10 12:39:29 asusf3ja kernel: [  
55.009039] Pid: 1907, comm: dmsetup_env Not tainted 2.6.32-5-xen-amd64
#1 F3JA
May 10 12:39:29 asusf3ja kernel: [  
55.009039] RIP: e030:[<ffffffff8100e428>]  [<ffffffff8100e428>]
xen_set_pmd+0x15/0x2c
May 10 12:39:29 asusf3ja kernel: [  
55.009039] RSP: e02b:ffff88000264db18  EFLAGS: 00010246
May 10 12:39:29 asusf3ja kernel: [  
55.009039] RAX: 0000000000000000 RBX: ffff88000f0cc010 RCX: ffff880000000000
May 10 12:39:29 asusf3ja kernel: [  
55.009039] RDX: ffffea0000000000 RSI: 0000000001d4a000 RDI: ffff88000f0cc010
May 10 12:39:29 asusf3ja kernel: [  
55.009039] RBP: 0000000000000000 R08: 0000000001d4a000 R09: ffff88000fc03c00
May 10 12:39:29 asusf3ja kernel: [  
55.009039] R10: 0000000000000000 R11: ffff880002710760 R12: 000000000061c000
May 10 12:39:29 asusf3ja kernel: [  
55.009039] R13: 0000000000400000 R14: ffff88000f0cc010 R15: ffff88000f396000
May 10 12:39:29 asusf3ja kernel: [  
55.009039] FS:  00007f7138d0b700(0000) GS:ffff880003356000(0000) knlGS:0000000000000000
May 10 12:39:29 asusf3ja kernel: [  
55.009039] CS:  e033 DS: 0000 ES: 0000 CR0: 000000008005003b
May 10 12:39:29 asusf3ja kernel: [  
55.009039] CR2: ffff88000f0cc010 CR3: 000000000eda9000 CR4: 0000000000002660
May 10 12:39:29 asusf3ja kernel: [  
55.009039] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
May 10 12:39:29 asusf3ja kernel: [  
55.009039] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
May 10 12:39:29 asusf3ja kernel: [  
55.009039] Process dmsetup_env (pid: 1907, threadinfo ffff88000264c000,
task ffff8800025fc6a0)
May 10 12:39:29 asusf3ja kernel: [  
55.009039] Stack:
May 10 12:39:29 asusf3ja kernel: [  
55.009039]  ffff880000000000 0000000000600000 0000000000400000 ffffffff810cfae2
May 10 12:39:29 asusf3ja kernel: [  
55.009039] <0> ffff88000264dfd8 000000000edb1067 0000000003192ad3
0000000000000000
May 10 12:39:29 asusf3ja kernel: [  
55.009039] <0> 0000000000000000 000000000061bfff 000000000061bfff
0000000001c00000
May 10 12:39:29 asusf3ja kernel: [  
55.009039] Call Trace:
May 10 12:39:29 asusf3ja kernel: [  
55.009039]  [<ffffffff810cfae2>] ? free_pgd_range+0x226/0x3bf
May 10 12:39:29 asusf3ja kernel: [  
55.009039]  [<ffffffff810cfd17>] ? free_pgtables+0x9c/0xbd
May 10 12:39:29 asusf3ja kernel: [  
55.009039]  [<ffffffff810d14f9>] ? exit_mmap+0xef/0x148
May 10 12:39:29 asusf3ja kernel: [  
55.009039]  [<ffffffff8104cc7d>] ? mmput+0x3c/0xdf
May 10 12:39:29 asusf3ja kernel: [  
55.009039]  [<ffffffff810f470e>] ? flush_old_exec+0x460/0x54c
May 10 12:39:29 asusf3ja kernel: [  
55.009039]  [<ffffffff81127468>] ? load_elf_binary+0x0/0x1954
May 10 12:39:29 asusf3ja kernel: [  
55.009039]  [<ffffffff81127805>] ? load_elf_binary+0x39d/0x1954
May 10 12:39:29 asusf3ja kernel: [  
55.009039]  [<ffffffff810cc7ce>] ? follow_page+0x2ad/0x303
May 10 12:39:29 asusf3ja kernel: [  
55.009039]  [<ffffffff810ce392>] ? __get_user_pages+0x3ea/0x47b
May 10 12:39:29 asusf3ja kernel: [  
55.009039]  [<ffffffff810f5203>] ? get_arg_page+0x61/0x110
May 10 12:39:29 asusf3ja kernel: [  
55.009039]  [<ffffffff81127468>] ? load_elf_binary+0x0/0x1954
May 10 12:39:29 asusf3ja kernel: [  
55.009039]  [<ffffffff810f3ede>] ? search_binary_handler+0xb4/0x245
May 10 12:39:29 asusf3ja kernel: [  
55.009039]  [<ffffffff810f56df>] ? do_execve+0x1e4/0x2c3
May 10 12:39:29 asusf3ja kernel: [  
55.009039]  [<ffffffff81010500>] ? sys_execve+0x35/0x4c
May 10 12:39:29 asusf3ja kernel: [  
55.009039]  [<ffffffff81011f9a>] ? stub_execve+0x6a/0xc0
May 10 12:39:29 asusf3ja kernel: [  
55.009039] Code: fb ff ff e8 d2 f4 01 00 bf 01 00 00 00 e8 c9 ea ff ff
59 5e 5b c3 55 48 89 f5 53 48 89 fb 48 83 ec 08 e8 6e e3 ff ff 84 c0 75
08 <48> 89 2b 41 59 5b 5d c3 41 58 48 89 df 48 89 ee 5b 5d e9 7e
ff
May 10 12:39:29 asusf3ja kernel: [  
55.009039] RIP  [<ffffffff8100e428>] xen_set_pmd+0x15/0x2c
May 10 12:39:29 asusf3ja kernel: [  
55.009039]  RSP <ffff88000264db18>
May 10 12:39:29 asusf3ja kernel: [  
55.009039] CR2: ffff88000f0cc010
May 10 12:39:29 asusf3ja kernel: [  
55.009039] ---[ end trace eb86c0dbc5e972a3 ]---


Anyone have met this problem ?
Thanks in advance for your answer.
Regards,
Rémi



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