Project

General

Profile

Bug #9560

IPv4 packets in IPv6 ethernet frames panic debug builds

Added by Jorge Schrauwen almost 2 years ago. Updated over 1 year ago.

Status:
Closed
Priority:
High
Assignee:
Dan McDonald
Category:
networking
Start date:
2018-05-29
Due date:
% Done:

100%

Estimated time:
Difficulty:
Medium
Tags:
needs-triage
Gerrit CR:

Description

Debug builds (of SmartOS) keep dumping with the same stack.

vpanic()
0xfffffffffbe13588()
mac_ip_hdr_length_v6+0x6f(fffffeb3270c1684, fffffeb3270c16b8, fffffe00f8ef81ec, fffffe00f8ef81ef, 0)
mac_rx_srs_long_fanout+0x1e3(fffffeb6fb6fb340, fffffeb37029d280, 86dd, 12, fffffe00f8ef8ab8, fffffe00f8ef8abc)
        NOTICE THE 0x86dd ABOVE?  THAT'S ETHERTYPE_IP6.
mac_rx_srs_fanout+0x2a2(fffffeb6fb6fb340, fffffeb45e81b980)
mac_rx_srs_drain+0x2f2(fffffeb6fb6fb340, 1000)
mac_rx_srs_poll_ring+0x2fa(fffffeb6fb6fb340)
thread_start+8()

I am directly assigning this to Dan as he already has a patch for this.

History

#1

Updated by Jorge Schrauwen almost 2 years ago

More context from the back and forth e-mails with Dan.

::status

debugging crash dump vmcore.1 (64-bit) from carbon
operating system: 5.11 joyent_20180519T150206Z (i86pc)
image uuid: (not set)
panic message: assertion failed: IPH_HDR_VERSION(ip6h) == IPV6_VERSION, file: ../../common/io/mac/mac_util.c, line: 539
dump content: kernel pages only

$c

vpanic()
0xfffffffffbe13588()
mac_ip_hdr_length_v6+0x6f(fffffeb3270c1684, fffffeb3270c16b8, fffffe00f8ef81ec, fffffe00f8ef81ef, 0)
mac_rx_srs_long_fanout+0x1e3(fffffeb6fb6fb340, fffffeb37029d280, 86dd, 12, fffffe00f8ef8ab8, fffffe00f8ef8abc)
        NOTICE THE 0x86dd ABOVE?  THAT'S ETHERTYPE_IP6.
mac_rx_srs_fanout+0x2a2(fffffeb6fb6fb340, fffffeb45e81b980)
mac_rx_srs_drain+0x2f2(fffffeb6fb6fb340, 1000)
mac_rx_srs_poll_ring+0x2fa(fffffeb6fb6fb340)
thread_start+8()

fffffeb37029d280::mblk

            ADDR FL TYPE    LEN   BLEN              RPTR             DBLK
fffffeb37029d280 0  data    70    80    fffffeb3270c1672 fffffeb3270c1600

fffffeb3270c1672::print -a "struct ether_vlan_header" 

fffffeb3270c1672 {
    fffffeb3270c1672 ether_dhost = {
        fffffeb3270c1672 ether_addr_octet = [ 0xd2, 0x89, 0x66, 0xb4, 0xd1, 0xdb ]
    }
    fffffeb3270c1678 ether_shost = {
        fffffeb3270c1678 ether_addr_octet = [ 0x78, 0x4f, 0x43, 0x25, 0xb, 0x91 ]
    }
    fffffeb3270c167e ether_tpid = 0x81
    fffffeb3270c1680 ether_tci = 0xa00
    fffffeb3270c1682 ether_type = 0xdd86
}

fffffeb3270c1684::print -a ipha_t
fffffeb3270c1684 {
    fffffeb3270c1684 ipha_version_and_hdr_length = 0x45
    fffffeb3270c1685 ipha_type_of_service = 0
    fffffeb3270c1686 ipha_length = 0x3400
    fffffeb3270c1688 ipha_ident = 0
    fffffeb3270c168a ipha_fragment_offset_and_flags = 0x40
    fffffeb3270c168c ipha_ttl = 0x40
    fffffeb3270c168d ipha_protocol = 0x6
    fffffeb3270c168e ipha_hdr_checksum = 0xbec5
    fffffeb3270c1690 ipha_src = 10.23.10.151
    fffffeb3270c1694 ipha_dst = 66.117.29.227
}

#2

Updated by Dan McDonald almost 2 years ago

  • Subject changed from Kernel dumps on debug builds to IPv4 packets in IPv6 ethernet frames panic debug builds
#3

Updated by Electric Monk almost 2 years ago

  • Status changed from New to Closed
  • % Done changed from 0 to 100

git commit e5d18d1ceadd308280e89216cc186d7aa8058459

commit  e5d18d1ceadd308280e89216cc186d7aa8058459
Author: Dan McDonald <danmcd@joyent.com>
Date:   2018-05-30T02:00:00.000Z

    9560 IPv4 packets in IPv6 ethernet frames panic debug builds
    Reviewed by: Jorge Schrauwen <jorge@blackdot.be>
    Reviewed by: Igor Kozhukhov <igor@dilos.org>
    Reviewed by: Toomas Soome <tsoome@me.com>
    Reviewed by: Ken Mays <maybird1776@yahoo.com>
    Approved by: Gordon Ross <gordon.w.ross@gmail.com>

#4

Updated by Jorge Schrauwen over 1 year ago

I hit this again on a SmartOS build from 20180830!

2018-09-11T20:37:36.285458+00:00 carbon savecore: [ID 570001 auth.error] reboot after panic: assertion failed: IPH_HDR_VERSION(ip6h) == IPV6_VERSION, file: ../../common/io/mac/mac_util.c, line: 539
2018-09-11T20:37:35+00:00 carbon savecore: [ID 315959 auth.warning] incomplete dump on dump device
2018-09-11T20:37:35+00:00 carbon savecore: [ID 121630 auth.warning] System dump time: Tue Sep 11 20:21:44 2018
2018-09-11T20:37:35+00:00 carbon savecore: [ID 676882 auth.error] Saving compressed system crash dump in /var/crash/volatile/vmdump.8

Sadly the dump is incomplete and the box hit the same issue again when it was trying to save vmdump.8 so it did not even save the incomplete dump either.

Also available in: Atom PDF