kern/53189: reproducable kernel assertion

[martin%NetBSD.org@localhost]

>Number:         53189
>Category:       kern
>Synopsis:       reproducable kernel assertion
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Mon Apr 16 15:20:00 +0000 2018
>Originator:     Martin Husemann
>Release:        NetBSD 8.99.14
>Organization:
The NetBSD Foundation, Inc.
>Environment:
System: NetBSD space-truckin.duskware.de 8.99.14 NetBSD 8.99.14 (SUNXI) #35: Mon Apr 16 11:06:40 CEST 2018 martin%night-owl.duskware.de@localhost:/usr/src/sys/arch/evbarm/compile/SUNXI evbarm
Architecture: earmv7hfeb
Machine: evbarm
>Description:

Running this test case:

fs/psshfs/t_psshfs (587/738): 4 test cases
    inode_nos: 

reproducably panics my earmv7hfeb and sparc64 machines (but alpha seems
to survive).

[ 939.4386985] panic: m_verify_packet: M_PKTHDR set on secondary mbuf
[ 939.4510184] cpu0: Begin traceback...
[ 939.4510184] 0x9a811dcc: netbsd:db_panic+0x14
[ 939.4587925] 0x9a811de4: netbsd:vpanic+0x194
[ 939.4587925] 0x9a811dfc: netbsd:snprintf
[ 939.4587925] 0x9a811e2c: netbsd:m_verify_packet+0xc8
[ 939.4704970] 0x9a811f14: netbsd:ip6_input+0x790
[ 939.4704970] 0x9a811f4c: netbsd:ip6intr+0x88
[ 939.4805137] 0x9a811fac: netbsd:softint_dispatch+0x114
[ 939.4805137] 0x9d879dbc: netbsd:softint_switch+0x58
[ 939.4909527] 0x9d879dec: netbsd:splx+0xc8
[ 939.4909527] 0x9d879e84: netbsd:sosend+0x780
[ 939.5005167] 0x9d879eac: netbsd:soo_write+0x3c
[ 939.5005167] 0x9d879f04: netbsd:dofilewrite+0x98
[ 939.5114988] 0x9d879f34: netbsd:sys_write+0x70
[ 939.5114988] 0x9d879fac: netbsd:syscall+0x164



>How-To-Repeat:

cd /usr/tests/fs/psshfs && atf-run

>Fix:
n/a