>Number:         34892
>Category:       kern
>Synopsis:       panic: lockmgr: no context
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Oct 24 02:25:00 +0000 2006
>Originator:     Tracy Di Marco White
>Release:        NetBSD 4.0_BETA
>Organization:
Iowa State University
>Environment:
System: NetBSD blackhole.ait.iastate.edu 4.0_BETA NetBSD 4.0_BETA (GENERIC) #0: Mon Sep 11 09:48:17 CDT 2006 root@blackhole.ait.iastate.edu:/usr/obj/usr/src/sys/arch/i386/compile/GENERIC i386
Architecture: i386
Machine: i386
>Description:
panic: lockmgr: no context
Stopped at      netbsd:cpu_Debugger+0x4:        leave
db> t
cpu_Debugger(ce3eda0c,e044,ce3eda2c,ce3eda18,10022) at netbsd:cpu_Debugger+0x4
panic(c07f874b,e09934b4,ce3eda5c,c036a31c,ce3eda48) at netbsd:panic+0x141
lockmgr(c08de9a4,10022,c08dea4c,81,c263f780) at netbsd:lockmgr+0x861
uvm_unmap1(c08de9a0,fac40000,fac60000,2800000,0) at netbsd:uvm_unmap1+0x4d
km_vacache_free(c08dea78,fac40000,74629163,ce3edad0,44d) at netbsd:km_vacache_free+0x29
pool_allocator_free(c08de9a0,fac40000,ce3edb04,ce3edb04,cf7db350) at netbsd:pool_allocator_free+0xe
pr_pagelist_free(44d,0,ce3edb4c,fac40fdc,0) at netbsd:pr_pagelist_free+0x34
pool_put(c08dea78,fac40000,ce3edb74,0,44d) at netbsd:pool_put+0x28
pool_allocator_free(0,0,ce3edb64,ce3edb64,cf7db350) at netbsd:pool_allocator_free+0xe
pr_pagelist_free(0,0,0,0,0) at netbsd:pr_pagelist_free+0x34
pool_put(c08fd8c0,fac40404,ce3edbfc,246,cf7db350) at netbsd:pool_put+0x28
sigactsfree(fac40404,cf7db350,ce3edbfc,c03dc5af,1000) at netbsd:sigactsfree+0x2a
exit1(de5eaf50,0,e32c8d0c,de5eaf50,0) at netbsd:exit1+0x3ca
sys_exit(de5eaf50,ce3edc48,ce3edc68,0,bbbcc000) at netbsd:sys_exit+0x31
syscall_plain() at netbsd:syscall_plain+0x155
--- syscall (number 1) ---
0xbbbc693f:

Much more debugging output at:
http://gendalia.public.iastate.edu/blackhole.lockmgr.txt
dmesg at:
http://gendalia.public.iastate.edu/blackhole.dmesg.txt
>How-To-Repeat:
Start doing backups, wait up to a week.
>Fix:

>Unformatted:
 Source date: 20060911