[Bugme-new] [Bug 10996] New: 2.6.25 kernels spew SKB BUG: Invalid truesize when using ipsec/openswan

bugme-daemon at bugzilla.kernel.org bugme-daemon at bugzilla.kernel.org
Fri Jun 27 16:37:22 PDT 2008 

http://bugzilla.kernel.org/show_bug.cgi?id=10996

           Summary: 2.6.25 kernels spew SKB BUG: Invalid truesize when using
                    ipsec/openswan
           Product: Networking
           Version: 2.5
     KernelVersion: Linux version 2.6.25.9 (ajlill at ds) (gcc version 3.4.6
                    (Debian 3.
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: low
          Priority: P1
         Component: IPV4
        AssignedTo: shemminger at linux-foundation.org
        ReportedBy: ajlill at ajlc.waterloo.on.ca


Latest working kernel version: 2.6.24.4
Earliest failing kernel version:2.6.25.4
Distribution: Debian etch
Hardware Environment:
processor       : 0
vendor_id       : GenuineIntel
cpu family      : 15
model           : 4
model name      : Intel(R) Celeron(R) CPU 2.93GHz
stepping        : 1
cpu MHz         : 2929.700
cache size      : 256 KB
fdiv_bug        : no
hlt_bug         : no
f00f_bug        : no
coma_bug        : no
fpu             : yes
fpu_exception   : yes
cpuid level     : 5
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe constant_tsc up pebs
bts pni monitor ds_cpl cid xtpr
bogomips        : 5865.13
clflush size    : 64

Linux-i686-2.6.25.9 $ cat /proc/modules 
xfrm_user 28040 2 - Live 0xe037d000
xfrm4_tunnel 3976 0 - Live 0xe0226000
af_key 39452 0 - Live 0xe0308000
authenc 8072 5 - Live 0xe0443000
xfrm4_mode_tunnel 3976 10 - Live 0xe0435000
cls_u32 9100 1 - Live 0xe045e000
sch_red 7432 1 - Live 0xe0440000
xt_mark 3208 2 - Live 0xe0433000
xt_layer7 12564 5 - Live 0xe0463000
xt_length 2952 2 - Live 0xe0431000
cls_fw 6536 14 - Live 0xe042b000
sch_sfq 8072 14 - Live 0xe0422000
sch_htb 17288 2 - Live 0xe0425000
xt_TCPMSS 6536 1 - Live 0xe0400000
xt_tcpmss 3208 1 - Live 0xe0418000
netconsole 11044 0 - Live 0xe043c000
configfs 28592 2 netconsole, Live 0xe0446000
pppoe 14564 2 - Live 0xe0437000
pppox 5396 1 pppoe, Live 0xe042e000
iptable_mangle 4360 1 - Live 0xe0415000
xt_MARK 3592 47 - Live 0xe0395000
xt_conntrack 5128 1 - Live 0xe0412000
ipt_REDIRECT 3208 1 - Live 0xe035f000
xt_limit 3596 4 - Live 0xe0334000
ipt_recent 10428 3 - Live 0xe041a000
ipt_REJECT 5000 11 - Live 0xe040f000
xt_state 3464 10 - Live 0xe0306000
xt_tcpudp 4360 203 - Live 0xe040c000
ipt_LOG 7052 27 - Live 0xe03f7000
iptable_filter 4492 1 - Live 0xe03fd000
iptable_nat 8340 1 - Live 0xe0408000
ip_tables 15256 3 iptable_mangle,iptable_filter,iptable_nat, Live 0xe0403000
nf_nat_pptp 4872 0 - Live 0xe03fa000
nf_conntrack_pptp 8076 1 nf_nat_pptp, Live 0xe03a2000
nf_conntrack_proto_gre 7176 1 nf_conntrack_pptp, Live 0xe034b000
nf_nat_proto_gre 3852 1 nf_nat_pptp, Live 0xe0254000
nf_nat_sip 5512 0 - Live 0xe0392000
nf_conntrack_sip 10148 1 nf_nat_sip, Live 0xe039e000
nf_nat_ftp 4364 0 - Live 0xe038f000
nf_nat 20532 6
ipt_REDIRECT,iptable_nat,nf_nat_pptp,nf_nat_proto_gre,nf_nat_sip,
nf_nat_ftp, Live 0xe0397000
nf_conntrack_ipv4 18716 19 iptable_nat,nf_nat, Live 0xe0377000
nf_conntrack_ftp 10292 1 nf_nat_ftp, Live 0xe038b000
nf_conntrack 64396 13
xt_layer7,xt_conntrack,xt_state,iptable_nat,nf_nat_pptp,nf
_conntrack_pptp,nf_conntrack_proto_gre,nf_nat_sip,nf_conntrack_sip,nf_nat_ftp,nf
_nat,nf_conntrack_ipv4,nf_conntrack_ftp, Live 0xe03e6000
xt_TARPIT 5000 2 - Live 0xe0374000
x_tables 17804 17
xt_mark,xt_layer7,xt_length,xt_TCPMSS,xt_tcpmss,xt_MARK,xt_con
ntrack,ipt_REDIRECT,xt_limit,ipt_recent,ipt_REJECT,xt_state,xt_tcpudp,ipt_LOG,ip
table_nat,ip_tables,xt_TARPIT, Live 0xe0385000
tunnel4 4752 1 xfrm4_tunnel, Live 0xe034e000
ipcomp 9744 0 - Live 0xe0370000
esp4 9096 5 - Live 0xe035b000
aead 9096 2 authenc,esp4, Live 0xe0357000
ah4 7432 0 - Live 0xe0341000
af_packet 23176 8 - Live 0xe0369000
ppp_generic 28196 6 pppoe,pppox, Live 0xe0361000
slhc 7176 1 ppp_generic, Live 0xe004c000
ipv6 261772 34 - Live 0xe03a5000
deflate 4872 0 - Live 0xe0327000
zlib_deflate 19776 1 deflate, Live 0xe0351000
ctr 6024 0 - Live 0xe0316000
twofish 8328 0 - Live 0xe0330000
twofish_common 13832 1 twofish, Live 0xe033c000
camellia 22536 0 - Live 0xe0344000
serpent 18696 0 - Live 0xe0336000
blowfish 10376 0 - Live 0xe0323000
des_generic 17288 0 - Live 0xe032a000
cbc 5384 5 - Live 0xe0313000
aes_i586 9352 5 - Live 0xe0241000
aes_generic 31052 1 aes_i586, Live 0xe031a000
xcbc 6416 0 - Live 0xe023e000
sha256_generic 12808 0 - Live 0xe0301000
sha1_generic 3720 5 - Live 0xe017e000
crypto_null 4232 0 - Live 0xe023b000
crypto_blkcipher 19864 9 authenc,ctr,cbc,crypto_null, Live 0xe02fb000
dm_snapshot 20400 0 - Live 0xe024e000
dm_mirror 29200 0 - Live 0xe0245000
dm_mod 63032 2 dm_snapshot,dm_mirror, Live 0xe026e000
w83627hf 25140 0 - Live 0xe0164000
hwmon_vid 3848 1 w83627hf, Live 0xe0052000
hwmon 4388 1 w83627hf, Live 0xe0159000
8250_pnp 10888 0 - Live 0xe0237000
snd_intel8x0 34252 0 - Live 0xe021c000
snd_ac97_codec 93884 1 snd_intel8x0, Live 0xe0256000
ac97_bus 2952 1 snd_ac97_codec, Live 0xe00a6000
8250 26776 1 8250_pnp, Live 0xe0214000
serial_core 22536 1 8250, Live 0xe0177000
floppy 57224 0 - Live 0xe0228000
psmouse 39368 0 - Live 0xe016c000
snd_pcm 73640 2 snd_intel8x0,snd_ac97_codec, Live 0xe0201000
pcspkr 4232 0 - Live 0xe015c000
rtc 15532 0 - Live 0xe013a000
serio_raw 7948 0 - Live 0xe00f6000
i2c_i801 10648 0 - Live 0xe013f000
snd_timer 24600 1 snd_pcm, Live 0xe0143000
i2c_core 24348 1 i2c_i801, Live 0xe010b000
snd 52744 4 snd_intel8x0,snd_ac97_codec,snd_pcm,snd_timer, Live 0xe014b000
soundcore 9188 1 snd, Live 0xe0136000
snd_page_alloc 11412 2 snd_intel8x0,snd_pcm, Live 0xe0132000
rng_core 6156 0 - Live 0xe001e000
iTCO_wdt 12724 0 - Live 0xe00ed000
button 9496 0 - Live 0xe00f2000
intel_agp 27112 1 - Live 0xe0103000
agpgart 35416 1 intel_agp, Live 0xe00f9000
sg 36168 0 - Live 0xe00d4000
evdev 13348 0 - Live 0xe00a1000
sr_mod 17492 0 - Live 0xe00ce000
cdrom 36292 1 sr_mod, Live 0xe008a000
ext3 124888 3 - Live 0xe0112000
jbd 50736 1 ext3, Live 0xe00df000
mbcache 9740 1 ext3, Live 0xe0024000
sd_mod 27296 10 - Live 0xe0094000
pata_acpi 8200 0 - Live 0xe007e000
ata_generic 9104 0 - Live 0xe007a000
ata_piix 22796 10 - Live 0xe0083000
libata 150576 3 pata_acpi,ata_generic,ata_piix, Live 0xe00a8000
dock 12188 1 libata, Live 0xe0061000
8139cp 23440 0 - Live 0xe0073000
8139too 27544 0 - Live 0xe006b000
mii 6408 2 8139cp,8139too, Live 0xe004f000
ehci_hcd 34336 0 - Live 0xe0057000
uhci_hcd 25244 0 - Live 0xe0031000
thermal 21308 0 - Live 0xe0039000
processor 44792 1 thermal, Live 0xe0040000
fan 5256 0 - Live 0xe0021000
unix 29244 136 - Live 0xe0028000

Software Environment:
Debian etch firewall using pppoe and openswan
Problem Description:

The kernel spews hundreds of 
SKB BUG: Invalid truesize (560) len=392, sizeof(sk_buff)=176
With various values for truesize and len whenever ipsec tunnels are up.

No other detectible problems, except log pollution.

Steps to reproduce:
/etc/init.d/ipsec start


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