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SubjectBUG: unable to handle kernel NULL pointer dereference at 00000000000000a0
From
I remember ipsec was able to work cleanly on my machines probably
about 4/6 months ago
now I get this:


[ 302.071077] BUG: unable to handle kernel NULL pointer dereference
at 00000000000000a0
[ 302.071084] IP: [<ffffffff81387e0b>] xfrm_bundle_ok+0x14f/0x2e9
[ 302.071094] PGD 13e695067 PUD 139c7e067 PMD 0
[ 302.071100] Oops: 0000 [#1] SMP
[ 302.071104] last sysfs file:
/sys/devices/pci0000:00/0000:00:15.0/0000:04:00.0/net/eth1/statistics/tx_bytes
[ 302.071109] CPU 0
[ 302.071111] Modules linked in: xfrm4_mode_transport sco xcbc bnep
rmd160 sha512_generic xt_tcpudp ipt_LOG iptable_nat nf_nat xt_state
nf_conntrack_ftp nf_conntrack_ipv4 nf_conntrack nf_defrag_ipv4
iptable_filter ip_tables x_tables firewire_ohci firewire_core evdev
lib80211_crypt_tkip uvcvideo videodev ohci1394 v4l1_compat button
thermal wl(P) nvidia(P) ohci_hcd forcedeth i2c_nforce2 aes_x86_64 lzo
lzo_compress ipcomp xfrm_ipcomp crypto_null sha256_generic cbc
des_generic cast5 blowfish serpent camellia twofish twofish_common ctr
ah4 esp4 authenc adm1021 raw1394 ieee1394 uhci_hcd ehci_hcd hci_uart
rfcomm btusb hidp l2cap bluetooth coretemp acpi_cpufreq processor
mperf appletouch applesmc
[ 302.071185]
[ 302.071189] Pid: 2603, comm: vncviewer Tainted: P
2.6.35-rc2-00001-g8dd40f7 #3 Mac-F2218FC8/iMac9,1
[ 302.071193] RIP: 0010:[<ffffffff81387e0b>] [<ffffffff81387e0b>]
xfrm_bundle_ok+0x14f/0x2e9
[ 302.071199] RSP: 0018:ffff880139f4db58 EFLAGS: 00010246
[ 302.071202] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[ 302.071206] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff880139f48700
[ 302.071209] RBP: ffff880139f4dbc8 R08: 0000000000000000 R09: ffff8801389cc574
[ 302.071212] R10: dead000000200200 R11: ffff880139f4dc98 R12: ffff88012739a500
[ 302.071216] R13: ffff88012739a780 R14: 0000000000000000 R15: ffff88012ed266c0
[ 302.071220] FS: 00007f201be85740(0000) GS:ffff880001a00000(0000)
knlGS:0000000000000000
[ 302.071224] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 302.071227] CR2: 00000000000000a0 CR3: 000000013b2a6000 CR4: 00000000000406f0
[ 302.071230] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 302.071234] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[ 302.071238] Process vncviewer (pid: 2603, threadinfo
ffff880139f4c000, task ffff880131b1dc40)
[ 302.071240] Stack:
[ 302.071242] ffff8801389366c0 ffffffff8168ff08 000000000000001c
000000000000000c
[ 302.071248] <0> 0000000000000000 00000000004623c0 0000000000000000
0000000081606c40
[ 302.071253] <0> ffff8801389cc480 ffff88012739a500 ffff88012ef80780
0000000000000000
[ 302.071260] Call Trace:
[ 302.071265] [<ffffffff81387fba>] stale_bundle+0x15/0x1f
[ 302.071270] [<ffffffff81387fdc>] xfrm_dst_check+0x18/0x2e
[ 302.071275] [<ffffffff8131d02f>] __sk_dst_check+0x27/0x53
[ 302.071281] [<ffffffff8135172a>] ip_queue_xmit+0x3c/0x2ed
[ 302.071286] [<ffffffff8136405c>] ? tcp_connect+0x1d4/0x379
[ 302.071290] [<ffffffff8131eef3>] ? __skb_clone+0x29/0x100
[ 302.071295] [<ffffffff81363dc0>] tcp_transmit_skb+0x6e1/0x71f
[ 302.071300] [<ffffffff81364175>] tcp_connect+0x2ed/0x379
[ 302.071305] [<ffffffff81243739>] ? secure_tcp_sequence_number+0x55/0x6e
[ 302.071310] [<ffffffff813692ee>] tcp_v4_connect+0x3c4/0x419
[ 302.071316] [<ffffffff811952d2>] ? avc_has_perm+0x57/0x69
[ 302.071321] [<ffffffff81375030>] inet_stream_connect+0xa7/0x260
[ 302.071326] [<ffffffff8131aa26>] sys_connect+0x75/0x9b
[ 302.071332] [<ffffffff810e403c>] ? fd_install+0x52/0x5b
[ 302.071338] [<ffffffff81092983>] ? audit_syscall_entry+0x1b6/0x1e2
[ 302.071342] [<ffffffff8131a552>] ? sys_socket+0x3b/0x57
[ 302.071348] [<ffffffff81025f42>] system_call_fastpath+0x16/0x1b
[ 302.071350] Code: 7d 58 41 80 bf c0 00 00 00 02 0f 85 98 01 00 00
41 8b 87 a8 00 00 00 41 39 85 b8 01 00 00 0f 85 84 01 00 00 49 8b 85
90 01 00 00 <8b> 80 a0 00 00 00 41 39 85 bc 01 00 00 0f 85 6a 01 00 00
83 7d
[ 302.071400] RIP [<ffffffff81387e0b>] xfrm_bundle_ok+0x14f/0x2e9
[ 302.071405] RSP <ffff880139f4db58>
[ 302.071408] CR2: 00000000000000a0
[ 302.071414] ---[ end trace b4323dbb88295950 ]---

starting a bisect, but might take some time....
--
Justin P. Mattock


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