Frequent crashes on 4.9STABLE

[Ajit Anand]

Hi,

We are facing frequent crashes of our server running Apache,MySQL.  The 
machine is a P4 2.8 GHz with 512 MB RAM and 2 80 GB IDE HDD's.

dmesg output is attached in the file.

uname -a
FreeBSD chatwith.addr.com 4.9-RELEASE FreeBSD 4.9-RELEASE #3: Thu Mar 25 
15:39:52 IST 2004     root at chatwith.addr.com:/usr/src/sys/compile/DEBUG  
i386

Output of gdb with the backtrace of the core

#0  dumpsys () at ../../kern/kern_shutdown.c:487
#1  0xc022b1af in boot (howto=256) at ../../kern/kern_shutdown.c:316
#2  0xc022b5ed in panic (fmt=0xc0405acc "%s") at 
../../kern/kern_shutdown.c:595
#3  0xc0382493 in trap_fatal (frame=0xdef5fd58, eva=54) at 
../../i386/i386/trap.c:974
#4  0xc0382141 in trap_pfault (frame=0xdef5fd58, usermode=0, eva=54) at 
../../i386/i386/trap.c:867
#5  0xc0381ce7 in trap (frame={tf_fs = 16, tf_es = 16, tf_ds = 
-1039728624, tf_edi = -554225664, tf_esi = -1069052468,
       tf_ebp = -554303944, tf_isp = -554304124, tf_ebx = 0, tf_edx = 0, 
tf_ecx = -554304249, tf_eax = 1, tf_trapno = 12,
       tf_err = 2, tf_eip = -1070434902, tf_cs = 8, tf_eflags = 66178, 
tf_esp = -730867616, tf_ss = -1069052468})
     at ../../i386/i386/trap.c:466
#6  0xc03275aa in vm_fault (map=0xc0478dcc, vaddr=3740741632, fault_type=1 
'\001', fault_flags=0)
     at ../../vm/vm_object.h:189
#7  0xc03820ee in trap_pfault (frame=0xdef5feac, usermode=0, 
eva=3740741632) at ../../i386/i386/trap.c:856
#8  0xc0381ce7 in trap (frame={tf_fs = 462946320, tf_es = 496500752, tf_ds 
= 16, tf_edi = 1073663755, tf_esi = -1055233972,
       tf_ebp = -554303652, tf_isp = -554303784, tf_ebx = -1055234048, 
tf_edx = 746534015, tf_ecx = -554225664,
       tf_eax = 345135053, tf_trapno = 12, tf_err = 0, tf_eip = 
-1071100893, tf_cs = 8, tf_eflags = 66178,
       tf_esp = -1055234048, tf_ss = 4196352}) at ../../i386/i386/trap.c:466
#9  0xc0284c23 in ip_input (m=0xc11a6800) at ../../sys/fnv_hash.h:26
#10 0xc028503b in ipintr () at ../../netinet/ip_input.c:955
#11 0xc0377509 in swi_net_next ()

Can someone please point me in the right direction to a solution to this 
problem.

TIA,

Ajit
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