hi, I use Debian/lenny , kernel linux 2.6.26-2-openvz-amd64 (with some virtual machines inside) ; lately, the attached messages has appeared in the kernel log; AFAICT, both times, it happened when I exited from google-chrome (but I cannot be sure) . Should I worry? What is your best guess, between 1) my hardware is faulty (could be, it is old) 2) there is really a bug in the kernel 3) someone is trying some exploit on my box, (or worse) Thanks for any info a. ps: please CC me, I am not on the list
[2201908.185689] ------------[ cut here ]------------ [2201908.185696] kernel BUG at kernel/exit.c:842! [2201908.185699] invalid opcode: 0000 [1] SMP [2201908.185702] CPU: 0 [2201908.185704] Modules linked in: udf crc_itu_t nls_cp437 vfat fat usb_storage nls_utf8 isofs nls_base zlib_inflate nvidia(P) binfmt_misc rfcomm l2cap bluetooth vzethdev vznetdev simfs vzrst vzcpt tun vzdquota vzmon vzdev xt_tcpudp xt_length ipt_ttl xt_tcpmss xt_TCPMSS iptable_mangle iptable_filter xt_multiport xt_limit xt_dscp ipt_REJECT ip_tables x_tables battery ppdev parport_pc lp parport ipv6 dm_crypt crypto_blkcipher cpufreq_ondemand powernow_k8 freq_table sbp2 ieee1394 loop snd_hda_intel snd_pcm_oss snd_mixer_oss snd_pcm snd_seq_dummy snd_seq_oss snd_seq_midi serio_raw snd_rawmidi snd_seq_midi_event psmouse pcspkr snd_seq snd_timer snd_seq_device k8temp snd soundcore snd_page_alloc i2c_piix4 i2c_core button evdev ext3 jbd mbcache dm_mirror dm_log dm_snapshot dm_mod ide_cd_mod cdrom ide_disk sd_mod atiixp usbhid ide_pci_generic hid ff_memless ide_core ahci ata_generic libata scsi_mod dock ehci_hcd atl1 mii ohci_hcd thermal processor fan thermal_sys [last unloaded: scsi_wai _scan] [2201908.189574] Pid: 24586, comm: chrome Tainted: P 2.6.26-2-openvz-amd64 #1 036test001 [2201908.189574] RIP: 0010:[<ffffffff802385bc>] [<ffffffff802385bc>] do_exit+0x4ef/0x739 [2201908.189574] RSP: 0018:ffff81007dc3ff08 EFLAGS: 00010206 [2201908.189574] RAX: ffff81002ca32200 RBX: ffff81002ca32040 RCX: ffff81002ca32200 [2201908.189574] RDX: ffff81002ca32200 RSI: ffff81002ca32198 RDI: ffff81002ca32040 [2201908.189574] RBP: ffff81002ca32050 R08: 0000000000000000 R09: 0000000000000000 [2201908.189574] R10: 00007fffffff9e80 R11: ffffffff8021f4b9 R12: ffff81002ca32050 [2201908.189574] R13: ffff810070c96090 R14: 0000000000000000 R15: 0000000000000000 [2201908.189574] FS: 00007f6d89a1d6f0(0000) GS:ffffffff80535000(0000) knlGS:00000000b7dba6b0 [2201908.189574] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [2201908.189574] CR2: 0000003ceae3a1f8 CR3: 000000004930c000 CR4: 00000000000006e0 [2201908.189574] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [2201908.189574] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 [2201908.189574] Process chrome (pid: 24586, veid=0, threadinfo ffff81007dc3e000, task ffff81002ca32050) [2201908.189574] Stack: ffff81007dc3ff08 ffff81007dc3ff08 ffff81002ca32050 ffff81002c38a400 [2201908.189574] ffff810018298300 0000000000000000 00007fffffff9e80 00000000028568d0 [2201908.189574] 00000000027c8c80 ffffffff80238873 00007fffffff9ee0 00007fffffffac60 [2201908.189574] Call Trace: [2201908.189574] [<ffffffff80238873>] ? do_group_exit+0x6d/0x9d [2201908.189574] [<ffffffff802388b5>] ? sys_exit_group+0x12/0x16 [2201908.189574] [<ffffffff8020bfea>] ? system_call_after_swapgs+0x8a/0x8f [2201908.189574] [2201908.189574] [2201908.189574] Code: 01 00 00 48 39 c6 75 c8 f0 81 05 5c da 2f 00 00 00 00 01 fb 66 66 66 90 66 66 90 48 8d 85 b0 01 00 00 48 39 85 b0 01 00 00 74 04 <0f> 0b eb fe 48 39 b5 48 01 00 00 74 04 0f 0b eb fe 48 8b 3c 24 [2201908.189574] RIP [<ffffffff802385bc>] do_exit+0x4ef/0x739 [2201908.189574] RSP <ffff81007dc3ff08> [2201908.189574] ---[ end trace e5ee4d7a9e48874f ]--- [2201908.189574] Fixing recursive fault but reboot is needed!
[ 0.000000] Linux version 2.6.26-2-openvz-amd64 (Debian 2.6.26-21lenny4) (dannf@debian.org) (gcc version 4.1.3 20080704 (prerelease) (Debian 4.1.2-25)) #1 SMP Tue Mar 9 23:10:10 UTC 2010 [...] [26727.147414] ------------[ cut here ]------------ [26727.147422] kernel BUG at kernel/exit.c:842! [26727.147425] invalid opcode: 0000 [1] SMP [26727.147428] CPU: 1 [26727.147430] Modules linked in: sha256_generic aes_x86_64 aes_generic cbc nls_cp437 vfat fat usb_storage nls_utf8 isofs nls_base zlib_inflate nvidia(P) binfmt_misc rfcomm l2cap bluetooth vzethdev vznetdev simfs vzrst vzcpt tun vzdquota vzmon vzdev xt_tcpudp xt_length ipt_ttl xt_tcpmss xt_TCPMSS iptable_mangle iptable_filter xt_multiport xt_limit xt_dscp ipt_REJECT ip_tables x_tables battery ppdev parport_pc lp parport ipv6 fuse dm_crypt crypto_blkcipher cpufreq_ondemand powernow_k8 freq_table sbp2 ieee1394 loop snd_hda_intel snd_pcm_oss snd_mixer_oss snd_pcm snd_seq_dummy snd_seq_oss snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq snd_timer snd_seq_device snd serio_raw soundcore snd_page_alloc psmouse pcspkr k8temp i2c_piix4 i2c_core button evdev ext3 jbd mbcache dm_mirror dm_log dm_snapshot dm_mod ide_cd_mod cdrom ide_disk usbhid hid ff_memless sd_mod atiixp ide_pci_generic ide_core ata_generic ahci ehci_hcd libata scsi_mod dock ohci_hcd atl1 mii thermal processor fan thermal_sys [last unloaded: scsi_wait_scan] [26727.147509] Pid: 4875, comm: chrome Tainted: P 2.6.26-2-openvz-amd64 #1 036test001 [26727.147513] RIP: 0010:[<ffffffff802385bc>] [<ffffffff802385bc>] do_exit+0x4ef/0x739 [26727.147521] RSP: 0018:ffff81000e11ff08 EFLAGS: 00010206 [26727.147524] RAX: ffff81003105c980 RBX: ffff81003105c7c0 RCX: ffff81003105c980 [26727.147527] RDX: ffff81003105c980 RSI: ffff81003105c918 RDI: ffff81003105c7c0 [26727.147531] RBP: ffff81003105c7d0 R08: 0000000000000000 R09: 0000000000000000 [26727.147534] R10: 00007fffffffa2b0 R11: 0000000000000001 R12: ffff81003105c7d0 [26727.147537] R13: ffff810043060810 R14: 0000000000000000 R15: 0000000000000000 [26727.147541] FS: 00007f9c78a376f0(0000) GS:ffff81007f0c79c0(0000) knlGS:0000000000000000 [26727.147544] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [26727.147547] CR2: 0000003ceae3a1f8 CR3: 00000000137fc000 CR4: 00000000000006e0 [26727.147551] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [26727.147554] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 [26727.147558] Process chrome (pid: 4875, veid=0, threadinfo ffff81000e11e000, task ffff81003105c7d0) [26727.147561] Stack: ffff81000e11ff08 ffff81000e11ff08 ffff81003105c7d0 ffff8100559c1140 [26727.147567] ffff8100790fae00 0000000000000000 00007fffffffa2b0 00000000028568d0 [26727.147572] 00000000027c8c80 ffffffff80238873 00007fffffffa310 00007fffffffb090 [26727.147576] Call Trace: [26727.147585] [<ffffffff80238873>] ? do_group_exit+0x6d/0x9d [26727.147590] [<ffffffff802388b5>] ? sys_exit_group+0x12/0x16 [26727.147594] [<ffffffff8020c00a>] ? system_call_after_swapgs+0x8a/0x8f [26727.147605] [26727.147606] [26727.147607] Code: 01 00 00 48 39 c6 75 c8 f0 81 05 5c da 2f 00 00 00 00 01 fb 66 66 66 90 66 66 90 48 8d 85 b0 01 00 00 48 39 85 b0 01 00 00 74 04 <0f> 0b eb fe 48 39 b5 48 01 00 00 74 04 0f 0b eb fe 48 8b 3c 24 [26727.147635] RIP [<ffffffff802385bc>] do_exit+0x4ef/0x739 [26727.147639] RSP <ffff81000e11ff08> [26727.147667] ---[ end trace 05f23b5e8c2594a9 ]--- [26727.147669] Fixing recursive fault but reboot is needed!
Attachment:
signature.asc
Description: OpenPGP digital signature