From owner-freebsd-current@FreeBSD.ORG  Wed Sep  1 22:12:35 2010
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From: ben wilber <ben@desync.com>
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Date: Wed, 1 Sep 2010 18:11:38 -0400
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To: Andre Oppermann <andre@freebsd.org>
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Cc: FreeBSD Current <freebsd-current@freebsd.org>
Subject: Re: TSO panic
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On Sep 1, 2010, at 8:57 AM, Andre Oppermann wrote:

> On 01.09.2010 01:13, ben wilber wrote:
>> Hi,
>>=20
>> I just upgraded from r210042 to r212073 and keep getting the panic
>> introduced in r211317:
>>=20
>> panic: tcp_output: len<=3D tso_segsz
>=20
> Please try the attached patch and report back whether it
> fixes the issue.

The system ran for 8 hours or so before I received the same panic.  =
Previously, it would panic within 20 minutes.

db:0:kdb.enter.default>  bt
Tracing pid 17131 tid 100601 td 0xffffff0236603440
kdb_enter() at kdb_enter+0x3d
panic() at panic+0x1c8
tcp_output() at tcp_output+0x1495
tcp_usr_send() at tcp_usr_send+0x267
sosend_generic() at sosend_generic+0x49e
sosend() at sosend+0x1f
soo_write() at soo_write+0x51
dofilewrite() at dofilewrite+0x87
kern_writev() at kern_writev+0x46
write() at write+0x4e
syscallenter() at syscallenter+0x251
syscall() at syscall+0x39
Xfast_syscall() at Xfast_syscall+0xe2
--- syscall (4, FreeBSD ELF64, write), rip =3D 0x800f5d1ac, rsp =3D =
0x7fffffffc3b8, rbp =3D 0x8007a1340 ---

Thanks.=