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Date:      Fri, 10 Oct 2008 17:50:55 +0300
From:      "Vlad GALU" <dudu@dudu.ro>
To:        "Jeremy Chadwick" <koitsu@freebsd.org>
Cc:        freebsd-stable@freebsd.org
Subject:   Re: UDP LOR with the latest RELENG_7
Message-ID:  <ad79ad6b0810100750q6a76144axdff87571938a64b@mail.gmail.com>
In-Reply-To: <20081010144234.GA34721@icarus.home.lan>
References:  <ad79ad6b0810100540w7a84d70ajd60cb575149914ef@mail.gmail.com> <20081010144234.GA34721@icarus.home.lan>

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On Fri, Oct 10, 2008 at 5:42 PM, Jeremy Chadwick <koitsu@freebsd.org> wrote:
> On Fri, Oct 10, 2008 at 03:40:26PM +0300, Vlad GALU wrote:
>>    As my kernel had started to lock up periodically and I don't have
>> hands-on access to that machine, I enabled WITNESS.
>> So these started to pop up:
>>
>> -- cut here --
>> --- syscall (97, FreeBSD ELF64, socket), rip = 0x80070427c, rsp =
>> 0x7fffffffe8c8, rbp = 0x516348 ---
>> uma_zalloc_arg: zone "16" with the following non-sleepable locks held:
>> exclusive rw udp r = 0 (0xffffffff8064c928) locked @
>> /usr/src/sys/netinet/udp_usrreq.c:1125
>> KDB: stack backtrace:
>> db_trace_self_wrapper() at db_trace_self_wrapper+0x2a
>> witness_warn() at witness_warn+0x241
>> uma_zalloc_arg() at uma_zalloc_arg+0x290
>> malloc() at malloc+0x5c
>> getenv() at getenv+0x93
>> getenv_quad() at getenv_quad+0x13
>> getenv_int() at getenv_int+0x15
>> udp_inpcb_init() at udp_inpcb_init+0x1f
>> slab_zalloc() at slab_zalloc+0x1ad
>> uma_zone_slab() at uma_zone_slab+0xb4
>> uma_zalloc_arg() at uma_zalloc_arg+0x31d
>> in_pcballoc() at in_pcballoc+0x38
>> udp_attach() at udp_attach+0x57
>> socreate() at socreate+0x14f
>> socket() at socket+0x8a
>> syscall() at syscall+0x1a9
>> Xfast_syscall() at Xfast_syscall+0xab
>> --- syscall (97, FreeBSD ELF64, socket), rip = 0x80070427c, rsp =
>> 0x7fffffffe8c8, rbp = 0x516348 ---
>> -- and here --
>>
>>    I tried to see whether bz@ had this one on his page, but his
>> website is currently being migrated and the list of LORs was
>> unavailable. Therefore, sorry if this mail is just noise...
>
> Your mail says "latest RELENG_7".  What is "latest?"  When did you csup?
> rwatson@ made some UDP-related changes recently which were very
> important.

   The kernel had been updated 3 hours before writing the mail :)

>
> --
> | Jeremy Chadwick                                jdc at parodius.com |
> | Parodius Networking                       http://www.parodius.com/ |
> | UNIX Systems Administrator                  Mountain View, CA, USA |
> | Making life hard for others since 1977.              PGP: 4BD6C0CB |
>
>



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