Hello,
System is a NAS and has two interfaces. Default route is on em0. The network
consisting of 2k hosts is attached to the em1. 7.0-RELEASE, 7.1-BETA2,
7.1-RC1
has the same error. In the progress of boot (uptime 7 seconds) it is
panicing:
Slab at 0xffffff000152ef50, freei 2 = 0.
panic: Duplicate free of item 0xffffff000152e200 from zone
0xffffff003bfd3000(mbuf_packet)
If I detach em1 before boot, the system boots and works well, but after
attaching em1 back constantly appears a messages like this:
rtfree: 0xffffff000187f7c0 has 1 refs
May be the cause of this warnings is connected to the cause of panic.
Here is a backtrace:
#0 doadump () at pcpu.h:195
#1 0xffffffff802cbc97 in boot (howto=260) at
../../../kern/kern_shutdown.c:418
#2 0xffffffff802cc13c in panic (fmt=Variable "fmt" is not available.
) at ../../../kern/kern_shutdown.c:574
#3 0xffffffff805029a8 in uma_dbg_free (zone=Variable "zone" is not
available.
) at ../../../vm/uma_dbg.c:302
#4 0xffffffff80501434 in uma_zfree_arg (zone=0xffffff003bfd3000,
item=0xffffff000152e200, udata=0x0) at ../../../vm/uma_core.c:2265
#5 0xffffffff803237d9 in m_freem (mb=0x0) at mbuf.h:515
#6 0xffffffff803d39a1 in ip_fastforward (m=0xffffff000152e200) at
../../../netinet/ip_fastfwd.c:609
#7 0xffffffff8036ace6 in ether_demux (ifp=0xffffff0001257000,
m=0xffffff000152e200) at ../../../net/if_ethersubr.c:770
#8 0xffffffff8036af62 in ether_input (ifp=0xffffff0001257000,
m=0xffffff000152e200) at ../../../net/if_ethersubr.c:692
#9 0xffffffff801fe6f4 in em_rxeof (adapter=0xffffffff80c57000, count=99) at
../../../dev/e1000/if_em.c:4539
#10 0xffffffff801feb8b in em_handle_rxtx (context=Variable "context" is not
available.
) at ../../../dev/e1000/if_em.c:1702
#11 0xffffffff80303481 in taskqueue_run (queue=0xffffff0001258600) at
../../../kern/subr_taskqueue.c:282
#12 0xffffffff8030363a in taskqueue_thread_loop (arg=Variable "arg" is not
available.
) at ../../../kern/subr_taskqueue.c:401
#13 0xffffffff802aa7ff in fork_exit (callout=0xffffffff803035e0
<taskqueue_thread_loop>, arg=0xffffffff80c5b588, frame=0xffffffff9ead9c80)
at ../../../kern/kern_fork.c:804
#14 0xffffffff805250e3 in fork_trampoline () at
../../../amd64/amd64/exception.S:455
Dump for the mbuf:
0xffffff000152e200: 0x00 0x00 0x00 0x00 0x00 0x00 0x00
0x00
0xffffff000152e208: 0x00 0x00 0x00 0x00 0x00 0x00 0x00
0x00
0xffffff000152e210: 0x10 0x68 0x53 0x01 0x00 0xff 0xff
0xff
0xffffff000152e218: 0x30 0x00 0x00 0x00 0x03 0x00 0x00
0x00
0xffffff000152e220: 0x01 0x00 0xad 0xde 0xde 0xc0 0xad
0xde
0xffffff000152e228: 0x00 0x70 0x25 0x01 0x00 0xff 0xff
0xff
0xffffff000152e230: 0x00 0x00 0x00 0x00 0x00 0x00 0x00
0x00
0xffffff000152e238: 0x30 0x00 0x00 0x00 0x00 0x0f 0x00
0x00
0xffffff000152e240: 0xff 0xff 0x00 0x00 0x00 0x00 0x00
0x00
0xffffff000152e248: 0x00 0x00 0x00 0x00 0x00 0x00 0x00
0x00
0xffffff000152e250: 0x00 0x68 0x53 0x01 0x00 0xff 0xff
0xff
0xffffff000152e258: 0x00 0x00 0x00 0x00 0x00 0x00 0x00
0x00
0xffffff000152e260: 0x00 0x00 0x00 0x00 0x00 0x00 0x00
0x00
0xffffff000152e268: 0x00 0x08 0x00 0x00 0xde 0xc0 0xad
0xde
0xffffff000152e270: 0x3c 0x00 0xfb 0x3b 0x00 0xff 0xff
0xff
0xffffff000152e278: 0x06 0x00 0x00 0x00 0xde 0xc0 0xad
0xde
0xffffff000152e280: 0xde 0xc0 0xad 0xde 0xde 0xc0 0xad
0xde
0xffffff000152e288: 0xde 0xc0 0xad 0xde 0xde 0xc0 0xad
0xde
0xffffff000152e290: 0xde 0xc0 0xad 0xde 0xde 0xc0 0xad
0xde
0xffffff000152e298: 0xde 0xc0 0xad 0xde 0xde 0xc0 0xad
0xde
0xffffff000152e2a0: 0xde 0xc0 0xad 0xde 0xde 0xc0 0xad
0xde
0xffffff000152e2a8: 0xde 0xc0 0xad 0xde 0xde 0xc0 0xad
0xde
0xffffff000152e2b0: 0xde 0xc0 0xad 0xde 0xde 0xc0 0xad
0xde
0xffffff000152e2b8: 0xde 0xc0 0xad 0xde 0xde 0xc0 0xad
0xde
0xffffff000152e2c0: 0xde 0xc0 0xad 0xde 0xde 0xc0 0xad
0xde
0xffffff000152e2c8: 0xde 0xc0 0xad 0xde 0xde 0xc0 0xad
0xde
0xffffff000152e2d0: 0xde 0xc0 0xad 0xde 0xde 0xc0 0xad
0xde
0xffffff000152e2d8: 0xde 0xc0 0xad 0xde 0xde 0xc0 0xad
0xde
0xffffff000152e2e0: 0xde 0xc0 0xad 0xde 0xde 0xc0 0xad
0xde
0xffffff000152e2e8: 0xde 0xc0 0xad 0xde 0xde 0xc0 0xad
0xde
0xffffff000152e2f0: 0xde 0xc0 0xad 0xde 0xde 0xc0 0xad
0xde
0xffffff000152e2f8: 0xde 0xc0 0xad 0xde 0xde 0xc0 0xad
0xde
I have a tcpdump file for the traffic on em1 during the boot but I can't
work out
the method of finding the matching packet to the mbuf.
Is there any idea where the problem lies?
Best regards,
Vladimir Kobal
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