creating runtime link editor directory cache.
preserving editor files.
starting network daemons: sshd.
/etc/rc.local[3]: /usr/local/bin/curl: not found
starting local daemons:.
Thu Dec  6 01:25:10 PST 2018

OpenBSD/amd64 (worker.syzkaller) (tty00)

Warning: Permanently added '10.128.15.203' (ECDSA) to the list of known hosts.
2018/12/06 01:25:30 parsed 1 programs
2018/12/06 01:25:34 executed programs: 0
login: panic: pr_find_pagehead: mbufpl: page header missing

Stopped at      db_enter+0xa:   popq    %rbp

    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND

db_enter() at db_enter+0xa

panic() at panic+0x147

pool_do_put(ffffff0006000100,ffffffff81eae978) at pool_do_put+0x339

pool_put(0,ffffff0006000100) at pool_put+0x37

m_free(ffffff0006000100) at m_free+0x12c

mq_purge(ffff800000ab5780) at mq_purge+0x6d

switchclose(ffff8000ffffd070,ffff800021132748,ffffffff8102f387,ffff8000211326f0

) at switchclose+0x77

spec_close(ffffffff81e3cf70) at spec_close+0x271

VOP_CLOSE(ffffff0070fe3d58,ffff8000ffffd070,ffffff007f7c7cc0,3) at VOP_CLOSE+0x

5f

vn_closefile(ffff8000ffffd070,ffffff006fa6f780) at vn_closefile+0xfc

fdrop(ffffff006fa6f780,ffff8000ffffd070) at fdrop+0xa4

closef(ffff8000ffffd070,ffffff006e9d39f8) at closef+0xd5

fdfree(ffff80002105f330) at fdfree+0x98

exit1(ffff800021132a10,ffff8000ffffd070,ffff80002105f330) at exit1+0x22f

end trace frame: 0xffff800021132930, count: 0

https://www.openbsd.org/ddb.html describes the minimum info required in bug

reports.  Insufficient info makes it difficult to find and fix bugs.

ddb> 

ddb> set $lines = 0

ddb> show panic

pr_find_pagehead: mbufpl: page header missing

ddb> trace

db_enter() at db_enter+0xa

panic() at panic+0x147

pool_do_put(ffffff0006000100,ffffffff81eae978) at pool_do_put+0x339

pool_put(0,ffffff0006000100) at pool_put+0x37

m_free(ffffff0006000100) at m_free+0x12c

mq_purge(ffff800000ab5780) at mq_purge+0x6d

switchclose(ffff8000ffffd070,ffff800021132748,ffffffff8102f387,ffff8000211326f0) at switchclose+0x77

spec_close(ffffffff81e3cf70) at spec_close+0x271

VOP_CLOSE(ffffff0070fe3d58,ffff8000ffffd070,ffffff007f7c7cc0,3) at VOP_CLOSE+0x5f

vn_closefile(ffff8000ffffd070,ffffff006fa6f780) at vn_closefile+0xfc

fdrop(ffffff006fa6f780,ffff8000ffffd070) at fdrop+0xa4

closef(ffff8000ffffd070,ffffff006e9d39f8) at closef+0xd5

fdfree(ffff80002105f330) at fdfree+0x98

exit1(ffff800021132a10,ffff8000ffffd070,ffff80002105f330) at exit1+0x22f

sys_exit(ffffffff8128e963,ffff800021132930,ffff800021132a10) at sys_exit+0x13

syscall(0) at syscall+0x3e4

Xsyscall(0,1,0,1,0,7f7ffffdcb30) at Xsyscall+0x128

end of kernel

end trace frame: 0x7f7ffffdcae0, count: -17

ddb> show registers

rdi               0xffffffff81e2d290    kprintf_mutex

rsi                              0x5

rbp               0xffff800021132500

rbx               0xffff8000211325a0

rdx                            0x3fd

rcx                                0

rax                                0

r8                0xffff8000211324d0

r9                0x8080808080808080

r10                                0

r11               0xffffffff81660ad0    x86_bus_space_io_read_1

r12                     0x3000000008

r13               0xffff800021132510

r14                            0x100

r15               0xffffffff81c15661    apollo_udma100_tim+0x5a7d

rip               0xffffffff81b3abba    db_enter+0xa

cs                               0x8

rflags                         0x246

rsp               0xffff800021132500

ss                              0x10

db_enter+0xa:   popq    %rbp

ddb>