WARNING - OLD ARCHIVES

This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
   
 
 
Xen 
 
Home Products Support Community News
 
   
 

xen-devel

[Xen-devel] kernel NULL pointer dereference in netback_uevent

To: xen-devel@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-devel] kernel NULL pointer dereference in netback_uevent
From: "Olivier B." <xen.list@xxxxxxxxx>
Date: Sat, 24 Jul 2010 01:56:23 +0200
Delivery-date: Fri, 23 Jul 2010 16:57:34 -0700
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
List-help: <mailto:xen-devel-request@lists.xensource.com?subject=help>
List-id: Xen developer discussion <xen-devel.lists.xensource.com>
List-post: <mailto:xen-devel@lists.xensource.com>
List-subscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
Sender: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
User-agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.10) Gecko/20100620 Icedove/3.0.5
Hi,

I've just compile a new pv_ops 2.6.32.16 pv_ops kernel for my Dom0, it works but when I reboot a DomU I obtain that strace :

Jul 24 01:48:08 keron kernel: [ 2108.807624] vlan: port 2(vif2.0) entering disabled state Jul 24 01:48:08 keron kernel: [ 2108.819009] vlan: port 2(vif2.0) entering disabled state Jul 24 01:48:09 keron kernel: [ 2109.869360] BUG: unable to handle kernel NULL pointer dereference at 0000000000000150 Jul 24 01:48:09 keron kernel: [ 2109.869457] IP: [<ffffffff811fdfab>] netback_uevent+0x8b/0xb9 Jul 24 01:48:09 keron kernel: [ 2109.869515] PGD 3e06d067 PUD 324cc067 PMD 0
Jul 24 01:48:09 keron kernel: [ 2109.869571] Oops: 0000 [#1] SMP
Jul 24 01:48:09 keron kernel: [ 2109.869620] last sysfs file: /sys/devices/vif-3-0/uevent
Jul 24 01:48:09 keron kernel: [ 2109.869670] CPU 3
Jul 24 01:48:09 keron kernel: [ 2109.869711] Modules linked in: xt_tcpudp xt_physdev bridge xen_evtchn iptable_filter iptable_mangle xenfs iptable_raw ip_tables x_tables authenc esp4 ah4 xfrm4_mode_transport deflate zlib_deflate ctr twofish twofish_common camellia serpent blowfish cast5 des_generic cbc aes_x86_64 aes_generic xcbc rmd160 sha256_generic sha1_generic hmac crypto_null af_key xfs exportfs 8021q garp stp drbd cn tpm_tis tpm tpm_bios i2c_i801 i2c_core snd_pcm snd_timer snd soundcore snd_page_alloc pcspkr joydev evdev ioatdma button processor acpi_processor ext3 jbd mbcache dm_mod usbhid hid ata_generic uhci_hcd ses sd_mod crc_t10dif enclosure ata_piix ehci_hcd libata megaraid_sas usbcore nls_base scsi_mod ixgbe mdio thermal thermal_sys igb dca [last unloaded: scsi_wait_scan] Jul 24 01:48:09 keron kernel: [ 2109.870516] Pid: 8893, comm: udevd Not tainted 2.6.32.16-dae-dom0 #1 S5520HC Jul 24 01:48:09 keron kernel: [ 2109.870571] RIP: e030:[<ffffffff811fdfab>] [<ffffffff811fdfab>] netback_uevent+0x8b/0xb9 Jul 24 01:48:09 keron kernel: [ 2109.870659] RSP: e02b:ffff88003e617e08 EFLAGS: 00010246 Jul 24 01:48:09 keron kernel: [ 2109.870709] RAX: 01000000000000c1 RBX: ffff88003cde9000 RCX: 000000000080007e Jul 24 01:48:09 keron kernel: [ 2109.870764] RDX: ffff88003d1bfdc0 RSI: ffffea0000d5e1c8 RDI: 01000000000002c0 Jul 24 01:48:09 keron kernel: [ 2109.870820] RBP: ffff88003222c000 R08: 0000000000000000 R09: 0000000000000073 Jul 24 01:48:09 keron kernel: [ 2109.870875] R10: 0000000000000000 R11: 0000000000000400 R12: 0000000000000000 Jul 24 01:48:09 keron kernel: [ 2109.870931] R13: ffff88003d1bfb00 R14: ffff88003e54c000 R15: ffffffff8149c020 Jul 24 01:48:09 keron kernel: [ 2109.870988] FS: 00007f6b21e877a0(0000) GS:ffff88000345f000(0000) knlGS:0000000000000000 Jul 24 01:48:09 keron kernel: [ 2109.871074] CS: e033 DS: 0000 ES: 0000 CR0: 000000008005003b Jul 24 01:48:09 keron kernel: [ 2109.871124] CR2: 0000000000000150 CR3: 00000000338f6000 CR4: 0000000000002660 Jul 24 01:48:09 keron kernel: [ 2109.871180] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 Jul 24 01:48:09 keron kernel: [ 2109.871235] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Jul 24 01:48:09 keron kernel: [ 2109.871291] Process udevd (pid: 8893, threadinfo ffff88003e616000, task ffff88003d541c00)
Jul 24 01:48:09 keron kernel: [ 2109.871376] Stack:
Jul 24 01:48:09 keron kernel: [ 2109.871414] 00000000000080d0 ffff88003cde9040 ffff88003222c000 ffff88003fc2d840 Jul 24 01:48:09 keron kernel: [ 2109.871479] <0> ffff88003cde9050 ffffffff8122a313 ffff88003e617f58 ffff88003fc2d840 Jul 24 01:48:09 keron kernel: [ 2109.871579] <0> ffff88003cde9050 0000000000000000 ffff88003222c000 ffffffff8122afda
Jul 24 01:48:09 keron kernel: [ 2109.871709] Call Trace:
Jul 24 01:48:09 keron kernel: [ 2109.871752] [<ffffffff8122a313>] ? dev_uevent+0xff/0x141 Jul 24 01:48:09 keron kernel: [ 2109.871803] [<ffffffff8122afda>] ? show_uevent+0x7e/0xd0 Jul 24 01:48:09 keron kernel: [ 2109.871854] [<ffffffff81229ff9>] ? dev_attr_show+0x1e/0x44 Jul 24 01:48:09 keron kernel: [ 2109.871907] [<ffffffff810b8aeb>] ? __get_free_pages+0x9/0x47 Jul 24 01:48:09 keron kernel: [ 2109.871959] [<ffffffff8113ce84>] ? sysfs_read_file+0xab/0x131 Jul 24 01:48:09 keron kernel: [ 2109.872011] [<ffffffff810eda9d>] ? vfs_read+0xa1/0xfc Jul 24 01:48:09 keron kernel: [ 2109.872061] [<ffffffff810edbab>] ? sys_read+0x45/0x6b Jul 24 01:48:09 keron kernel: [ 2109.872111] [<ffffffff81011a82>] ? system_call_fastpath+0x16/0x1b Jul 24 01:48:09 keron kernel: [ 2109.872163] Code: c7 c6 a2 7a 3e 81 31 c0 48 89 ef e8 8c fe f8 ff 85 c0 74 0f 4c 89 ef bd f4 ff ff ff e8 c3 7b ee ff eb 2c 4c 89 ef e8 b9 7b ee ff <49> 8b 94 24 50 01 00 00 48 89 ef 31 c0 48 c7 c6 ac 7a 3e 81 bd Jul 24 01:48:09 keron kernel: [ 2109.872583] RIP [<ffffffff811fdfab>] netback_uevent+0x8b/0xb9
Jul 24 01:48:09 keron kernel: [ 2109.872637]  RSP <ffff88003e617e08>
Jul 24 01:48:09 keron kernel: [ 2109.872681] CR2: 0000000000000150
Jul 24 01:48:09 keron kernel: [ 2109.873013] ---[ end trace 7c91c1bde16ffdaa ]---

Note : I'm running Xen 4.0.1~rc3-1 from Debian Squeeze.
Do you need more info ?

Thanks,
Olivier

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel

<Prev in Thread] Current Thread [Next in Thread>