kern/167059: System does panic in in_pcbbind() and hangs

Mykhaylo Yehorov yehorov at
Wed Apr 18 13:00:18 UTC 2012

>Number:         167059
>Category:       kern
>Synopsis:       System does panic in in_pcbbind() and hangs
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    freebsd-bugs
>State:          open
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Wed Apr 18 13:00:16 UTC 2012
>Originator:     Mykhaylo Yehorov
>Release:        FreeBSD 8.2-RELEASE
FreeBSD 8.2-RELEASE #0: Fri Feb 18 02:24:46 UTC 2011     root at  i386
We have some servers on different sites.
All servers have similar configuration and running software.
Sometimes servers hangs and don't respond to the keyboard events.
Servers can be rebooted by hard reset only.
At that time I can see the following on the console.

stack pointer           = 0x28:0xfac3fb60
frame pointer           = 0x28:0xfac3fbac
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         = 53151 (mediacnvr)
trap number             = 12
panic: page fault
cpuid = 0
KDB: stack backtrace:
#0 0xc08e0d07 at kdb_backtrace+0x47
#1 0xc08b1dc7 at panic+0x117
#2 0xc0be4b43 at trap_fatal+0x323
#3 0xc0be4dc0 at trap_pfault+0x270
#4 0xc0be5305 at trap+0x465
#5 0xc0bcbebc at calltrap+0x6
#6 0xc09ba437 at in_pcbbind+0x57
#7 0xc0a3979c at udp_bind+0xac
#8 0xc090fe63 at sobind+0x23
#9 0xc0918a22 at kern_bind+0xc2
#10 0xc0918aa6 at bind+0x46
#11 0xc08eca39 at syscallenter+0x329
#12 0xc0be4e14 at syscall+0x34
#13 0xc0bcbf21 at Xint0x80_syscall+0x21

We have upgraded FreeBSD to 8.3-RELEASE but servers still hang.




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