In article <20050422113259.GX3858@xxxxxxxxxxxxxxxxxxx> (at Fri, 22 Apr 2005 14:32:59 +0300), Matti Aarnio <matti.aarnio@xxxxxxxxxxx> says: > kernel BUG at net/ipv6/exthdrs_core.c:80! > invalid operand: 0000 [#1] > SMP DEBUG_PAGEALLOC > Modules linked in: parport_pc lp parport w83627hf eeprom i2c_sensor i2c_isa ip_conntrack_ftp ipt_conntrack iptable_mangle ipt_state ip_conntrack ipt_REJECT iptable_filter ip_tables ip6table_filter ip6_tables md5 ipv6 dm_mod video button battery ac ohci1394 ieee1394 uhci_hcd ehci_hcd hw_random i2c_i801 i2c_core snd_intel8x0 snd_ac97_codec snd_pcm_oss snd_mixer_oss snd_pcm snd_timer snd soundcore snd_page_alloc e100 mii sk98lin dummy floppy ext3 jbd raid1 sata_sil ata_piix libata aic7xxx sd_mod scsi_mod > CPU: 1 > EIP: 0060:[<c0309611>] Not tainted VLI > EFLAGS: 00010282 (2.6.11-1.1191_FC4smp) > EIP is at ipv6_skip_exthdr+0xb0/0x15f > eax: fffffff2 ebx: 0000002c ecx: f4ba0abe edx: c5c3ef48 > esi: 000000d8 edi: 00000000 ebp: 000000da esp: f4ba0ab0 > ds: 007b es: 007b ss: 0068 > Process named (pid: 2498, threadinfo=f4ba0000 task=f4ba3ad0) > Stack: 00000002 f4ba0b17 c5c3ef48 80000000 c5c3ef48 00000028 f4ba0b58 00000000 > c01bd46e 00000038 c9081080 001733f8 00000001 c2017c60 c2017c60 00000001 > 854830d2 f4ba3ad0 00000096 f4ba0afc f4ba0afc c0404488 00000001 f4ba0b2c > Call Trace: > [<c01bd46e>] selinux_parse_skb_ipv6+0x8a/0x14a > [<c01bd58f>] selinux_parse_skb+0x61/0x8b > [<c01be0fb>] selinux_ip_postroute_last+0xc9/0x222 > [<c01be299>] selinux_ipv6_postroute_last+0x20/0x25 > [<f8dca952>] ip6_output_finish+0x0/0xf0 [ipv6] : I assume that BUG was raised because of skb_header_pointer()'s failure; which means, skb_copy_bits()'s failure. Strange to me. Do you know what caused this? How about disabling selinux / ip6tables? Thanks. --yoshfuji - : send the line "unsubscribe linux-net" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html