Daniel A. wrote:
Hi guys,
My server crashes very often and it's very random. So not long ago, I
was suggested that I read the FreeBSD Handbook pages about kernel
debugging, and here is the result:
[EMAIL PROTECTED] DIENUB $ kgdb kernel.debug /var/crash/vmcore.3
[GDB will not be able to debug user-mode threads:
/usr/lib/libthread_db.so: Undefined symbol "ps_pglobal_lookup"]
GNU gdb 6.1.1 [FreeBSD]
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This GDB was configured as "i386-marcel-freebsd".
Unread portion of the kernel message buffer:
Fatal trap 28: machine check trap while in kernel mode
instruction pointer = 0x20:0xc06830b0
stack pointer = 0x28:0xd446ea7c
frame pointer = 0x28:0xd446ea8c
code segment = base 0x0, limit 0xfffff, type 0x1b
= DPL 0, pres 1, def32 1, gran 1
processor eflags = interrupt enabled, resume, IOPL = 0
current process = 14 (swi1: net)
trap number = 28
panic: machine check trap
Uptime: 1d4h24m37s
Dumping 511 MB (2 chunks)
chunk 0: 1MB (160 pages) ... ok
chunk 1: 511MB (130800 pages) 495 479 463 447 431 415 399 383 367 351
335 319 303 287 271 255 239 223 207 191 175 159 143 127 111 95 79 63 47
31 15
#0 doadump () at pcpu.h:165
165 __asm __volatile("movl %%fs:0,%0" : "=r" (td));
(kgdb) q
As far as I understand, the issue is CPU-related, but that doesn't make
sense, as my network interface cards are constantly giving me watchdog
timeouts.
[EMAIL PROTECTED] include $ uname -a
FreeBSD m00h.dienub.org 6.1-RELEASE FreeBSD 6.1-RELEASE #0: Mon May 29
20:40:41 CEST 2006 [EMAIL PROTECTED]:/usr/obj/usr/src/sys/DIENUB
i386
Thanks for any help. Also, please CC any replies to me.
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Some more dump data:
#0 doadump () at pcpu.h:165
#1 0xc064dda5 in boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:402
#2 0xc064e03c in panic (fmt=0xc088c06e "%s")
at /usr/src/sys/kern/kern_shutdown.c:558
#3 0xc0841334 in trap_fatal (frame=0xd446ea3c, eva=0)
at /usr/src/sys/i386/i386/trap.c:836
#4 0xc0840e7c in trap (frame=
{tf_fs = -1017446392, tf_es = -1016266712, tf_ds = -733609944,
tf_edi = -1017398016, tf_esi = -1016246016, tf_ebp = -733549940, tf_isp
= -733549976, tf_ebx = 1, tf_edx = 3, tf_ecx = 0, tf_eax = -1016246016,
tf_trapno = 28, tf_err = 0, tf_eip = -1066913616, tf_cs = 32, tf_eflags
= 590483, tf_esp = -1016016896, tf_ss = 0}) at
/usr/src/sys/i386/i386/trap.c:631
#5 0xc0830b5a in calltrap () at /usr/src/sys/i386/i386/exception.s:139
#6 0xc06830b0 in mb_free_ext (m=0xc36d5100)
at /usr/src/sys/kern/uipc_mbuf.c:252
#7 0xc0682fa6 in m_freem (mb=0xc36d5100) at mbuf.h:486
#8 0xc06845be in m_defrag (m0=0xc36d5100, how=1)
at /usr/src/sys/kern/uipc_mbuf.c:1252
#9 0xc076063b in rl_encap (sc=0xc34a6800, m_head=0xc36d5100)
at /usr/src/sys/pci/if_rl.c:1390
#10 0xc0760923 in rl_start_locked (ifp=0xc34a3800)
at /usr/src/sys/pci/if_rl.c:1446
#11 0xc07606da in rl_start (ifp=0xc34a3800) at /usr/src/sys/pci/if_rl.c:1427
#12 0xc06ba83f in if_start (ifp=0x0) at /usr/src/sys/net/if.c:2234
#13 0xc06bbc6f in ether_output_frame (ifp=0xc34a3800, m=0xc36d5100)
at /usr/src/sys/net/if_ethersubr.c:406
#14 0xc06bba54 in ether_output (ifp=0xc34a3800, m=0xc36d5100,
dst=0xc365e970,
rt0=0x3) at /usr/src/sys/net/if_ethersubr.c:359
#15 0xc06e9480 in ip_output (m=0xc36d5100, opt=0xc34a3800, ro=0xd446ebd0,
flags=1, imo=0x0, inp=0x0) at /usr/src/sys/netinet/ip_output.c:777
#16 0xc06e89a0 in ip_forward (m=0xc36d5100, srcrt=0)
at /usr/src/sys/netinet/ip_input.c:1907
#17 0xc06e750f in ip_input (m=0xc36d5100)
at /usr/src/sys/netinet/ip_input.c:689
#18 0xc06c3e1b in netisr_processqueue (ni=0xc0981538)
at /usr/src/sys/net/netisr.c:236
#19 0xc06c4016 in swi_net (dummy=0x0) at /usr/src/sys/net/netisr.c:349
#20 0xc0639479 in ithread_execute_handlers (p=0xc32b5418, ie=0xc32f5200)
at /usr/src/sys/kern/kern_intr.c:684
#21 0xc0639590 in ithread_loop (arg=0xc329b6e0)
at /usr/src/sys/kern/kern_intr.c:767
#22 0xc06383e8 in fork_exit (callout=0xc063953c <ithread_loop>,
arg=0xc329b6e0, frame=0xd446ed38) at /usr/src/sys/kern/kern_fork.c:805
#23 0xc0830bbc in fork_trampoline () at
/usr/src/sys/i386/i386/exception.s:208
Please, someone help me debug this. It's really frustrating.
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