kern/38107: recent crash in -current

[kefren%ngnetworks.ro@localhost]

>Number:         38107
>Category:       kern
>Synopsis:       crash in -current under diskload
>Confidential:   no
>Severity:       critical
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Feb 26 08:15:00 +0000 2008
>Originator:     Mihai Chelaru
>Release:        NetBSD 4.99.54
>Organization:
        
>Environment:
        
        
System: NetBSD kemobile.girsa.ro 4.99.54 NetBSD 4.99.54 (Kefren) #1: Sun Feb 24 
17:26:04 EET 2008 
kefren%kemobile.girsa.ro@localhost:/usr/work/src/sys/arch/i386/compile/obj/Kefren
 i386
Architecture: i386
Machine: i386
>Description:
        

        Under heavy diskload (extracting firefox sources, rm -rf /usr/src) I 
get the following:

#0  0xc046cff2 in cpu_reboot (howto=260, bootstr=0x0) at 
/usr/work/src/sys/arch/i386/i386/machdep.c:952
952                     dumpsys();
(gdb) bt
#0  0xc046cff2 in cpu_reboot (howto=260, bootstr=0x0) at 
/usr/work/src/sys/arch/i386/i386/machdep.c:952
#1  0xc03d80fa in panic (fmt=0xc067ef24 "trap") at 
/usr/work/src/sys/kern/subr_prf.c:260
#2  0xc0471123 in trap (frame=0xcb708af8) at 
/usr/work/src/sys/arch/i386/i386/trap.c:372
#3  0xc01030c8 in calltrap ()
#4  0xc040d0ba in VFS_SYNC (mp=0xca4fb600, a=0, b=0x0) at 
/usr/work/src/sys/kern/vfs_subr2.c:1102
#5  0xc040c16d in vfs_shutdown () at /usr/work/src/sys/kern/vfs_subr.c:1810
#6  0xc046d0c9 in cpu_reboot (howto=256, bootstr=0x0) at 
/usr/work/src/sys/arch/i386/i386/machdep.c:938
#7  0xc03d80fa in panic (fmt=0xc067ef24 "trap") at 
/usr/work/src/sys/kern/subr_prf.c:260
#8  0xc0471123 in trap (frame=0xcb708c70) at 
/usr/work/src/sys/arch/i386/i386/trap.c:372
#9  0xc01030c8 in calltrap ()
#10 0xc040d0ba in VFS_SYNC (mp=0xcb708cdc, a=65554, b=0xc05e89a0) at 
/usr/work/src/sys/kern/vfs_subr2.c:1102
#11 0xc0417a73 in VOP_FSYNC (vp=0xcba39008, cred=0xca4e4f00, flags=8, offlo=0, 
offhi=0)
    at /usr/work/src/sys/kern/vnode_if.c:804
#12 0xc041eeba in sched_sync (v=0xca4fb600) at 
/usr/work/src/sys/miscfs/syncfs/sync_subr.c:223
#13 0xc01002cf in lwp_trampoline ()

>How-To-Repeat:
        
>Fix:
        

>Unformatted: