Hello Steve, Could you please take a look at the following oops? It looks like it is related to cifs: 1) Code line is corrupted (21 byte?!?), It looks like part of CIFS smb_hdr with CIFS magic: 00 00 50 ff 53 4d 42 32 00 00 00 00 80 41 c0 <00> 00 00 00 00 00 FF S M B
2) This issue was reproduced several times on several nodes, but every time it was occurred after the following message: "CIFS VFS: Invalid size SMB length 4 pdu_length 4" Is it probably known issue for you? Thank you, Vasily Averin Virtuozzo/OpenVZ linux kernel Team Unable to handle kernel NULL pointer dereference at virtual address 00000611 printing eip: 02106330 *pde = 00004001 Oops: 0002 [#1] SMP Modules linked in: nls_iso8859_1 cifs simfs mptctl vzrst vzcpt ip_vzredir vzredir vzcompat vzdquota vzfs vzethdev vzevent vzlist vzstat ip_vznetstat af_packet 8021q bridge vznet vznetstat vzmon vzdev iptable_filter tun ipt_mac ipt_MASQUERADE ip_nat_irc ip_nat_ftp iptable_nat ip_conntrack_irc ip_conntrack_ftp ipt_LOG ipt_state ip_conntrack ipt_length ipt_ttl ipt_tcpmss ipt_TCPMSS iptable_mangle ipt_multiport ipt_limit ipt_tos ipt_REJECT ip_tables thermal processor fan button battery ac uhci_hcd ehci_hcd e752x_edac edac_mc e1000 sg CPU: 2, VCPU: 0:1 EIP: 0060:[<02106330>] Tainted: P VLI EFLAGS: 00010202 (2.6.9-023stab044.4-enterprise) EIP is at kernel_thread+0x0/0xd0 eax: 00000611 ebx: ca969e68 ecx: ca969e28 edx: 00000206 esi: 08109000 edi: ca969e2c ebp: 00000206 esp: 0814bf30 ds: 007b es: 007b ss: 0068 Process khelper (pid: 14, veid=0, threadinfo=0814a000 task=08147360) Stack: 0213f828 0213f750 ca969e68 00000611 ca969e68 0213fe33 ca969e68 0814bf74 00000000 08109028 08109010 08109018 0213f800 ca969e28 0814a000 ffffffff ffffffff 00000001 00000000 02123680 00010000 00000000 e1f718c0 ffffffff Call Trace: [<0213f828>] __call_usermodehelper+0x28/0x70 [<0213f750>] wait_for_helper+0x0/0xb0 [<0213fe33>] worker_thread+0x1f3/0x280 [<0213f800>] __call_usermodehelper+0x0/0x70 [<02123680>] default_wake_function+0x0/0x20 [<02123680>] default_wake_function+0x0/0x20 [<0213fc40>] worker_thread+0x0/0x280 [<02144d6d>] kthread+0xbd/0x100 [<02144cb0>] kthread+0x0/0x100 [<02106321>] kernel_thread_helper+0x5/0x14 Code: 24 ec 64 50 02 89 44 24 04 e8 1d 64 02 00 83 c4 18 5b 5e 5f c3 89 f6 89 d0 52 ff d3 00 00 50 ff 53 4d 42 32 00 00 00 00 80 41 c0 <00> 00 00 00 00 00 e5 6c 02 8b 54 24 68 85 c0 75 19 b8 00 e0 ff Oct 20 03:51:05 kernel: CIFS VFS: Invalid size SMB length 4 pdu_length 4 Oct 20 03:51:05 kernel: CIFS VFS: No response for cmd 50 mid 17053 Oct 20 03:52:37 kernel: Unable to handle kernel NULL pointer dereference at virtual address 00000611 Oct 26 00:50:22 s39 kernel: CIFS VFS: Invalid size SMB length 4 pdu_length 4 Oct 26 00:50:22 s39 kernel: CIFS VFS: No response for cmd 50 mid 32013 Oct 26 00:50:40 s39 kernel: Unable to handle kernel NULL pointer dereference at virtual address 00000611 Nov 5 03:50:18 s39 kernel: CIFS VFS: Invalid size SMB length 4 pdu_length 4 Nov 5 03:50:18 s39 kernel: CIFS VFS: No response for cmd 50 mid 10169 Nov 5 03:50:39 s39 kernel: Unable to handle kernel NULL pointer dereference at virtual address 00000611 _______________________________________________ Devel mailing list Devel@openvz.org https://openvz.org/mailman/listinfo/devel