Date: Tue, 27 Jun 2000 14:12:05 +0200 (CEST) From: Jimmy Olgeni <olgeni@uli.it> To: FreeBSD-gnats-submit@freebsd.org Subject: kern/19544: panic in delete_pipe (ipfw pipe delete) Message-ID: <Pine.LNX.4.21.0006271411001.1699-100000@dev1.localdomain.net>
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>Number: 19544
>Category: kern
>Synopsis: panic in delete_pipe
>Confidential: no
>Severity: critical
>Priority: high
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Tue Jun 27 05:20:00 PDT 2000
>Closed-Date:
>Last-Modified:
>Originator: Jimmy Olgeni
>Release: FreeBSD 4.0-STABLE i386
>Organization:
Colby
>Environment:
Kernel that supports dummynet.
>Description:
If there are no dummynet pipes configured in the system, an attempt to delete
any pipe with "ipfw pipe delete" will result in a kernel panic (trap 12).
(kgdb) up
#3 0xc032fe09 in trap_pfault (frame=0xc64a0d58, usermode=0, eva=0)
at ../../i386/i386/trap.c:820
820 trap_fatal(frame, eva);
(kgdb) up
#4 0xc032f9c3 in trap (frame={tf_fs = 16, tf_es = 16, tf_ds = 16,
tf_edi = -968225348, tf_esi = 0, tf_ebp = -968225368,
tf_isp = -968225404, tf_ebx = -1058306304, tf_edx = -968232960,
tf_ecx = 0, tf_eax = 0, tf_trapno = 12, tf_err = 0,
tf_eip = -1071642696, tf_cs = 8, tf_eflags = 66182, tf_esp = -968225348,
tf_ss = 0}) at ../../i386/i386/trap.c:426
426 (void) trap_pfault(&frame, FALSE, eva);
(kgdb) up
#5 0xc02007b8 in delete_pipe (p=0xc64a0dbc)
at ../../netinet/ip_dummynet.c:1559
1559 all_pipes = b->next ;
(kgdb) print b
$1 = (struct dn_pipe *) 0x0
^^^^^^^^^^^^^^^^^^^^^^^^^^^
(kgdb) up
#6 0xc0200c32 in ip_dn_ctl (sopt=0xc64a0f14)
at ../../netinet/ip_dummynet.c:1750
1750 error = delete_pipe(p);
(kgdb) print p
$2 = (struct dn_pipe *) 0xc64a0dbc
(kgdb)
>How-To-Repeat:
As root, run:
# ipfw pipe show
[to check that the pipe list is really empty]
# ipfw pipe delete 1
[panic]
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:
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