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[DragonFlyBSD - Bug #2512] (Closed) panic: kqueue: checkloop failed i=0

From: John Marino via Redmine <bugtracker-admin@xxxxxxxxxxxxxxxxxxxxx>
Date: Tue, 14 May 2013 11:22:34 -0700

Issue #2512 has been updated by marino.

Status changed from New to Closed

This seems to have been resolved a long time ago.
Bug #2512: panic: kqueue: checkloop failed i=0

Author: marino
Status: Closed
Priority: Normal
Target version: 

banshee.synsport.com dumped core - see /var/crash/vmcore.5
Fri Feb 15 19:59:45 CET 2013
Version String: DragonFly 8f7fdaf-DEVELOPMENT #13: Mon Feb 11 10:52:48 CET 2013 root@banshee.synsport.com:/usr/obj/usr/src/sys/X86_64_BANSHEE_SMP
panic: kqueue: checkloop failed i=0
GNU gdb (GDB) 7.4.1
Copyright (C) 2012 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-dragonfly".
For bug reporting instructions, please see:
Reading symbols from /boot/kernel/kernel...done.
Unread portion of the kernel message buffer:
panic: assertion "ncp->nc_refs == 1" failed in cache_zap at /usr/src/sys/kern/vfs_cache.c:2159
cpuid = 1
Trace beginning at frame 0xffffffe0df80b458
panic() at panic+0x1f6 0xffffffff8041b96f 

Fatal trap 12: page fault while in kernel mode
cpuid = 1; lapic->id = 01000000
fault virtual address	= 0xffffffe0ffffffff
fault code		= supervisor read data, page not present
instruction pointer	= 0x8:0xffffffff806b7572
stack pointer	        = 0x10:0xffffffe0df80b318
frame pointer	        = 0x10:0xffffffe0df80b318
code segment		= base 0x0, limit 0xfffff, type 0x1b
			= DPL 0, pres 1, long 1, def32 0, gran 1
processor eflags	= interrupt enabled, resume, IOPL = 0
current process		= 72985
current thread          = pri 6 
kernel: type 12 trap, code=0

full core text here: http://leaf.dragonflybsd.org/~marino/core/core.kqueue_checkloop.txt
full core dump at ~marino/crash/kqueue_checkloop on leaf

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