kern/68529: Panic at line 867 in uipc_socket2.c

[Charlie &]

>Number:         68529
>Category:       kern
>Synopsis:       Panic at line 867 in uipc_socket2.c
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Wed Jun 30 20:10:18 GMT 2004
>Closed-Date:
>Last-Modified:
>Originator:     Giovanni P. Tirloni
>Release:        FreeBSD 5.2-CURRENT i386
>Organization:
Myself
>Environment:
System: FreeBSD srv.bs2.local 5.2-CURRENT FreeBSD 5.2-CURRENT #5: Thu Jun 3 10:27:39 BRT 2004 root at srv.bs2.local:/usr/src/sys/i386/compile/SRV i386

Pentium II/Pentium II Xeon/Celeron (534.55-MHz 686-class CPU)
real memory  = 199229440 (190 MB)
2 Realtek's (one internal, other adsl pppoe)


>Description:

The machine simply crashed this afternoon. It dropped into the debugger:

panic: sbflush: cc 0 || mb 0xc1ff9300 | mbcount 0 at line 867 in file ../../../kern/uipc_socket2.c
Debugger("panic"), stoppped at Debugger +0x45: xchgl %ebx,in_Debugger,0

> trace

Debugger(c067f4a3) at Debugger+0x45
__panic(c068218e, 363, c0621e3,0, c1ff9300) at __panic+0xc7
sbflush()
sbrelease()
sorflush()
sofree()
soclose()
soo_close()
fdrop_locked()
fdrop()
closef()
fdtree()
exit1()
exit1()
syscall(2f, bfbf002f, bfb002f, 8076244, cf8) at syscall+0x27f
Xint0x80_syscall()
__syscall(1, FreeBSD ELF32, sys_exit), eip = 0x282bacab, esp = 0xbfbfe5ac, ebp = 0xbfbfe5c8

(I've not copied all those numbers because they were too many and I was in a hurry, sorry)

I'm going to update to lastest code and try but this will take
a while because the machine is too slow.

>How-To-Repeat:

It's never happened and I don't know how to reproduce.

>Fix:

I've no idea.


>Release-Note:
>Audit-Trail:
>Unformatted: