>Number:         30048
>Category:       kern
>Synopsis:       Kernel panic with 3.0_BETA
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sun Apr 24 11:51:00 +0000 2005
>Originator:     Martti Kuparinen
>Release:        NetBSD 3.0_BETA
>Organization:
>Environment:
System: NetBSD www.nissenrinne.fi 3.0_BETA NetBSD 3.0_BETA (WWW) #0: Sat Apr 23 13:34:34 EEST 2005 root@www.nissenrinne.fi:/usr/src/sys/arch/i386/compile/WWW i386
Architecture: i386
Machine: i386
>Description:

Our server is crashing several times per week. Here's the latest crash:

ROOT www:/usr/src/sys/arch/i386/compile/WWW> gdb netbsd
...
(gdb) target kcore /var/crash/netbsd.1.core
panic: m_copym: m == 0, len %d [!COPYALL]
#0  0x00000000 in ?? ()
(gdb) bt
#0  0x00000000 in ?? ()
#1  0xc09a6000 in ?? ()
#2  0xc0444f29 in cpu_reboot ()
#3  0xc03b3a1c in panic ()
#4  0xc044f865 in trap ()
#5  0xc0102f13 in calltrap ()
#6  0xc03d1de5 in getnewbuf ()
#7  0xc03d191a in getblk ()
#8  0xc035f907 in ufs_bmaparray ()
#9  0xc035f557 in ufs_bmap ()
#10 0xc03e1038 in VOP_BMAP ()
#11 0xc03e43d5 in genfs_gop_write ()
#12 0xc03e3eb0 in genfs_putpages ()
#13 0xc03e13ac in VOP_PUTPAGES ()
#14 0xc034a314 in ffs_full_fsync ()
#15 0xc0349d94 in ffs_fsync ()
#16 0xc03e0d18 in VOP_FSYNC ()
#17 0xc03484ac in ffs_sync ()
#18 0xc03d9db2 in sys_sync ()
#19 0xc03d8184 in vfs_shutdown ()
#20 0xc0444f3d in cpu_reboot ()

>How-To-Repeat:
>Fix: