panic when running acroread on recent -CURRENT/amd64

[Yuri]

Hi,

After upgrading to -CURRENT/amd64 as of 18 August 2006, around 7PM
GMT, I'm getting panics when running acroread, even without X. Ports
were upgraded too.

linux_base-fc-4_8
acroread7-7.0.8,1

If more information is needed, it's 100% reproducible here.

---
Unread portion of the kernel message buffer:
panic: no emuldata found for userreting process.

KDB: enter: panic
panic: from debugger
Uptime: 3m32s
Physical memory: 2040 MB
Dumping 97 MB: 82 66 50 34 18 2

#0  doadump () at pcpu.h:172
172     pcpu.h: No such file or directory.
        in pcpu.h
(kgdb) bt
#0  doadump () at pcpu.h:172
#1  0xffffffff8025a3c3 in boot (howto=260) at
/usr/src/sys/kern/kern_shutdown.c:409
#2  0xffffffff8025a9f7 in panic (fmt=0xffffff00614c1000 "") at
/usr/src/sys/kern/kern_shutdown.c:565
#3  0xffffffff80183997 in db_panic (addr=0, have_addr=0, count=0,
modif=0x0) at /usr/src/sys/ddb/db_command.c:428
#4  0xffffffff80183e39 in db_command_loop () at
/usr/src/sys/ddb/db_command.c:396
#5  0xffffffff80185d23 in db_trap (type=-1375823616, code=0) at
/usr/src/sys/ddb/db_main.c:221
#6  0xffffffff8027c499 in kdb_trap (type=3, code=0, tf=0x0) at
/usr/src/sys/kern/subr_kdb.c:502
#7  0xffffffff803acc82 in trap (frame=
      {tf_rdi = 0, tf_rsi = -2139025408, tf_rdx = 0, tf_rcx = 1090236,
tf_r8 = 1048064, tf_r9 = 10, tf_rax = 18, tf_rbx = -2143017936, tf_rbp
= -1375823056, tf_r10 = -1375823296, tf_r11 = 10, tf_r12 = 256, tf_r13
= -1097879252992, tf_r14 = -1097957538048, tf_r15 = 0, tf_trapno = 3,
tf_addr = 0, tf_flags = -1097879252992, tf_err = 0, tf_rip =
-2144878705, tf_cs = 8, tf_rflags = 646, tf_rsp = -1375823056, tf_ss =
16}) at /usr/src/sys/amd64/amd64/trap.c:471
#8  0xffffffff803996cb in calltrap () at
/usr/src/sys/amd64/amd64/exception.S:168
#9  0xffffffff8027bf8f in kdb_enter (msg=0x0) at cpufunc.h:63
#10 0xffffffff8025aa7c in panic (fmt=0xffffffff80442430 "no emuldata
found for userreting process.\n")
    at /usr/src/sys/kern/kern_shutdown.c:549
#11 0xffffffff803e8a30 in linux_schedtail (arg=0x0,
p=0xffffff005ca18700) at /usr/src/sys/compat/linux/linux_emul.c:267
#12 0xffffffff8023fa7f in fork_exit (callout=0xffffff0000a4a700,
arg=0x4, frame=0xffffff0000cf6500)
    at /usr/src/sys/kern/kern_fork.c:831
#13 0xffffffff80399a2e in fork_trampoline () at
/usr/src/sys/amd64/amd64/exception.S:394
#14 0x00000000ffffd308 in ?? ()
#15 0x0000000000000000 in ?? ()
Previous frame identical to this frame (corrupt stack?)