Date: Thu, 1 Oct 2009 15:17:53 +0400 From: pluknet <pluknet@gmail.com> To: Robert Watson <rwatson@freebsd.org> Cc: FreeBSD Net <freebsd-net@freebsd.org> Subject: Re: panic in soabort Message-ID: <a31046fc0910010417n7a35785boe631dfa30c1151a7@mail.gmail.com> In-Reply-To: <alpine.BSF.2.00.0904252009420.91546@fledge.watson.org> References: <a31046fc0904230118m184b50adnd2cebb4d610f94ca@mail.gmail.com> <alpine.BSF.2.00.0904231038550.54334@fledge.watson.org> <a31046fc0904232104w380b7dabr1168b3df970c542a@mail.gmail.com> <alpine.BSF.2.00.0904252009420.91546@fledge.watson.org>
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2009/4/25 Robert Watson <rwatson@freebsd.org>:
>
> On Fri, 24 Apr 2009, pluknet wrote:
>
>> 2009/4/23 Robert Watson <rwatson@freebsd.org>:
>>>
>>> On Thu, 23 Apr 2009, pluknet wrote:
>>>
>>>> Please, give me comment on this. The panic is on 6.2-REL. Is it known =
to
>>>> be fixed in the latter releases?
>>>
>>> It may well be -- there have been quite significant architectural
>>> improvements to socket life cycle (etc) between 6.2 and 7.x releases, w=
hich
>>> may well close the race causing this panic. =A0However, we'll probably =
need to
>>> learn a bit more in order to decide for sure. =A0Could you convert the
>>> trapping instruction pointer to file+offset in the source code?
>>
>> Looks I've lost the corresponding kernel.debug. Anyway I have such bt th=
e
>> first time.
>
> If you run into this again, let me know. =A0Also, are you using accept fi=
lters
> on the box?
>
Got it again (this time on 6.4-p5).
Fatal trap 12: page fault while in kernel mode
cpuid =3D 2; apic id =3D 02
fault virtual address =3D 0x104
fault code =3D supervisor read, page not present
instruction pointer =3D 0x20:0xc06a3425
stack pointer =3D 0x28:0xef764bb0
frame pointer =3D 0x28:0xef764bbc
code segment =3D base 0x0, limit 0xfffff, type 0x1b
=3D DPL 0, pres 1, def32 1, gran 1
processor eflags =3D resume, IOPL =3D 0
current process =3D 74303 (proftpd)
db> bt 74303
Tracing pid 74303 tid 101039 td 0xcaa08820
_mtx_lock_sleep(ccd50768,caa08820,0,0,0) at _mtx_lock_sleep+0x9d
soabort(ccd506f4) at soabort+0x82
soclose(d1aa8b20) at soclose+0x21a
soo_close(c9f50a20,caa08820) at soo_close+0x63
fdrop_locked(c9f50a20,caa08820,caf78a00,ef764ca8,c06875f3,...) at
fdrop_locked+0xd0
fdrop(c9f50a20,caa08820,caa08820,ef764c64,c0689055,...) at fdrop+0x41
closef(c9f50a20,caa08820,0,ef764d38,cad8f648,...) at closef+0x42f
kern_close(caa08820,a,ef764d30,c08e1d4b,caa08820,...) at kern_close+0x20d
close(caa08820,ef764d04) at close+0x10
syscall(bfbf003b,3b,bfbf003b,8150034,811a434,...) at syscall+0x2bf
Xint0x80_syscall() at Xint0x80_syscall+0x1f
--- syscall (6, FreeBSD ELF32, close), eip =3D 0x2832230f, esp =3D
0xbfbfe6bc, ebp =3D 0xbfbfe6d8 ---
db> show proc 74303
Process 74303 (proftpd) at 0xcad8f648:
state: NORMAL
uid: 36830 gids: 36830
parent: pid 95478 at 0xc8e60000
ABI: FreeBSD ELF32
arguments: proftpd: fatich_1 - 93.118.217.18: IDLE
threads: 1
101039 Run CPU 2 proftpd
(gdb) list *(soabort+0x82)
0xc06ea2a6 is in soabort (/usr/src/sys/kern/uipc_socket.c:510).
505 int error;
506
507 error =3D (*so->so_proto->pr_usrreqs->pru_abort)(so);
508 if (error) {
509 ACCEPT_LOCK();
510 SOCK_LOCK(so);
511 sotryfree(so); /* note: does not decrement
the ref count */
512 return error;
513 }
514 return (0);
--=20
wbr,
pluknet
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