Re: kern/52353: [netbsd-8] A crash in icmpv6 code (?)

[Kengo NAKAHARA <k-nakahara%iij.ad.jp@localhost>]

The following reply was made to PR kern/52353; it has been noted by GNATS.

From: Kengo NAKAHARA <k-nakahara%iij.ad.jp@localhost>
To: gnats-bugs%NetBSD.org@localhost, kern-bug-people%netbsd.org@localhost, gnats-admin%netbsd.org@localhost,
        netbsd-bugs%netbsd.org@localhost
Cc: 
Subject: Re: kern/52353: [netbsd-8] A crash in icmpv6 code (?)
Date: Mon, 3 Jul 2017 08:33:32 +0900

 Hi,
 
 On 2017/07/01 22:40, dmb%yenn.ulegend.net@localhost wrote:
 > System: NetBSD yenn 8.0_BETA NetBSD 8.0_BETA (YENN) #6: Mon Jun 26 08:49:07 UTC 2017 builds@yenn:/var/obj/sys/arch/amd64/compile/YENN amd64
 
 It seems you use other than GENERIC kernel config.Could you show your
 kernel config?
 
 > Architecture: x86_64
 > Machine: amd64
 >> Description:
 > yenn# crash -M netbsd.3.core -N netbsd.3
 > Crash version 8.0_BETA, image version 8.0_BETA.
 > System panicked: in6_cksum: mbuf too short for IPv6 header
 > Backtrace from time of crash is available.
 > crash> bt
 > _KERNEL_OPT_NARCNET() at 0
 > ?() at fffffe80a11bcc00
 > vpanic() at vpanic+0x149
 > snprintf() at snprintf
 > in6_cksum() at in6_cksum+0x1a2
 > _icmp6_input() at _icmp6_input+0xb4
 > wqinput_work() at wqinput_work+0x88
 > workqueue_worker() at workqueue_worker+0xbc
 > 
 > yes, IPv6 is via gif(4), but _before_ the patch for MP-fy
 >> How-To-Repeat:
 > 	possibly ping the machine for some time (?) with IPv6 on a gif(4) (?)
 
 Which do you use IPv6 over IPv6 or IPv6 over IPv4?
 
 
 Thanks,
 
 -- 
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 Internet Initiative Japan Inc.
 
 Device Engineering Section,
 IoT Platform Development Department,
 Network Division,
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 Kengo NAKAHARA <k-nakahara%iij.ad.jp@localhost>