Date: Mon, 6 Dec 1999 18:00:01 -0800 (PST) From: Sergiy Zhuk <serge@yahoo-inc.com> To: freebsd-bugs@FreeBSD.org Subject: Re: kern/9689: panic in sbdrop(kern/uipc_socket2.c) Message-ID: <199912070200.SAA10594@freefall.freebsd.org>
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The following reply was made to PR kern/9689; it has been noted by GNATS.
From: Sergiy Zhuk <serge@yahoo-inc.com>
To: freebsd-gnats-submit@freebsd.org, yasu@mrit.mei.co.jp
Cc:
Subject: Re: kern/9689: panic in sbdrop(kern/uipc_socket2.c)
Date: Mon, 06 Dec 1999 17:53:28 -0800
hi
freebsd 3.3 stable
same problem, but different source:
(kgdb) bt
#0 boot (howto=256) at ../../kern/kern_shutdown.c:285
#1 0xc013e1f4 in at_shutdown (
function=0xc020bf11
<__set_sysctl__kern_ipc_sym_sysctl___kern_ipc_somaxconn+
189>, arg=0xd821c2c4, queue=-668876160) at ../../kern/kern_shutdown.c:446
#2 0xc0157db8 in sbdrop (sb=0xd821c2c4, len=4)
at ../../kern/uipc_socket2.c:748
#3 0xc0157d44 in sbflush (sb=0xd821c2c4) at ../../kern/uipc_socket2.c:727
#4 0xc0181d3b in tcp_disconnect (tp=0xd8625cc0)
at ../../netinet/tcp_usrreq.c:763
#5 0xc018151a in tcp_usr_disconnect (so=0xd821c280)
at ../../netinet/tcp_usrreq.c:268
#6 0xc0155d34 in sodisconnect (so=0xd821c280) at ../../kern/uipc_socket.c:360
#7 0xc0155b6a in soclose (so=0xd821c280) at ../../kern/uipc_socket.c:246
#8 0xc014c5a7 in soo_close (fp=0xc3b31ac0, p=0xd8cfad60)
at ../../kern/sys_socket.c:181
#9 0xc0137020 in closef (fp=0xc3b31ac0, p=0xd8cfad60)
at ../../kern/kern_descrip.c:1065
#10 0xc0136671 in close (p=0xd8cfad60, uap=0xd8d9cf94)
at ../../kern/kern_descrip.c:504
#11 0xc01f7b5f in syscall (frame={tf_es = 39, tf_ds = -1078263769,
tf_edi = 32, tf_esi = 0, tf_ebp = -1077951320, tf_isp = -656814108,
tf_ebx = 32, tf_edx = -255, tf_ecx = 0, tf_eax = 6, tf_trapno = 7,
tf_err = 7, tf_eip = 1437813, tf_cs = 31, tf_eflags = 514,
tf_esp = -1077952520, tf_ss = 39}) at ../../i386/i386/trap.c:1100
#12 0x15f075 in ?? ()
#13 0x2e0f7 in ?? ()
#14 0x2cded in ?? ()
#15 0x1095 in ?? ()
(kgdb) frame 2
#2 0xc0157db8 in sbdrop (sb=0xd821c2c4, len=4)
at ../../kern/uipc_socket2.c:748
748 panic("sbdrop");
(kgdb) list
743
744 next = (m = sb->sb_mb) ? m->m_nextpkt : 0;
745 while (len > 0) {
746 if (m == 0) {
747 if (next == 0)
748 panic("sbdrop");
749 m = next;
750 next = m->m_nextpkt;
751 continue;
752 }
no idea how to repeat, but it happens pretty often
--
rgds,
serge
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