panic: deadlock in setrunqueue

FreeBSD 5.3-BETA3 #15: Thu Sep  9 22:31:08 EDT 2004
scheduler: 4bsd+preemption on i386/smp
invariants, witness: off

# kgdb -c vmcore.2 /usr/obj/usr/src/sys/GENERIC-S/kernel.debug
[GDB will not be able to debug user-mode threads: /usr/lib/libthread_db.so: Undefined symbol "ps_pglobal_lookup"]
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This GDB was configured as "i386-marcel-freebsd".
doadump () at pcpu.h:159
(kgdb) bt
#0  doadump () at pcpu.h:159
#1  0xc0529c51 in boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:397
#2  0xc052a073 in panic (fmt=0xc06d793e "deadlock in setrunqueue") at /usr/src/sys/kern/kern_shutdown.c:553
#3  0xc053ed04 in setrunqueue (td=0xc19df4b0, flags=0) at kern_switch.c:386
#4  0xc053e3b7 in sched_wakeup (td=0xc19df4b0) at /usr/src/sys/kern/sched_4bsd.c:804
#5  0xc05325be in setrunnable (td=0x0) at /usr/src/sys/kern/kern_synch.c:402
#6  0xc054eec0 in sleepq_resume_thread (td=0xc19df4b0, pri=-1) at /usr/src/sys/kern/subr_sleepqueue.c:646
#7  0xc054f358 in sleepq_remove (td=0xc19df4b0, wchan=0xc173a270) at /usr/src/sys/kern/subr_sleepqueue.c:818
#8  0xc05129a5 in kse_wakeup (td=0xc25e8c80, uap=0xc19df4b0) at /usr/src/sys/kern/kern_kse.c:486
#9  0xc0698f80 in syscall (frame=
      {tf_fs = 47, tf_es = 47, tf_ds = -1078001617, tf_edi = 135364608, tf_esi = 135431824, tf_ebp = -1079059232, tf_isp = -700572300, tf_ebx = 681208156, tf_edx = 135364608, tf_ecx = 135431824, tf_eax = 380, tf_trapno = 22, tf_err = 2, tf_eip = 681192475, tf_cs = 31, tf_eflags = 518, tf_esp = -1079059276, tf_ss = 47}) at /usr/src/sys/i386/i386/trap.c:1001
#10 0xc068399f in Xint0x80_syscall () at /usr/src/sys/i386/i386/exception.s:201

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