From: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
To: Jens Axboe <jens.axboe@oracle.com>
Cc: netdev@vger.kernel.org, olaf.kirch@oracle.com
Subject: Re: [PATCH][RFC] network splice receive v2
Date: Tue, 12 Jun 2007 22:17:17 +0400 [thread overview]
Message-ID: <20070612181717.GA1600@2ka.mipt.ru> (raw)
In-Reply-To: <20070611115926.GB18832@kernel.dk>
On Mon, Jun 11, 2007 at 01:59:26PM +0200, Jens Axboe (jens.axboe@oracle.com) wrote:
> Patches are against the #splice branch of the block repo, "official" url
> of that is:
>
> git://git.kernel.dk/data/git/linux-2.6-block.git/
>
> and it's based on Linus main tree. Let me know if I should supply netdev
> branch patches instead, or even just provide a rolled up patch (or patch
> series) for anyone curious to test or play with it.
Hi Jens.
I've just pulled your tree (splice-net, but splice tree looks the same, git pull says
'Already up-to-date.') on top of linus git and got following bug trace.
I will investigate it further tomorrow.
[ 51.942373] ------------[ cut here ]------------
[ 51.947041] kernel BUG at include/linux/mm.h:285!
[ 51.951786] invalid opcode: 0000 [1] PREEMPT SMP
[ 51.956680] CPU 0
[ 51.958784] Modules linked in: button loop snd_intel8x0
snd_ac97_codec psmouse ac97_bus snd_pcm snd_timer snd soundcore
snd_page_alloc k8temp i2c_nforcen
[ 51.988793] Pid: 2604, comm: splice-fromnet Not tainted
2.6.22-rc4-splice #2
[ 51.995886] RIP: 0010:[<ffffffff80389b15>] [<ffffffff80389b15>]
__skb_splice_bits+0xcd/0x201
[ 52.004520] RSP: 0018:ffff810037f23c28 EFLAGS: 00010246
[ 52.009872] RAX: 0000000000000000 RBX: ffff810037f23d98 RCX:
000000000000003f
[ 52.017053] RDX: ffff81003fe93808 RSI: ffff81003fe93808 RDI:
000000000003c0a3
[ 52.024233] RBP: ffff810037f23c78 R08: 0000000000000000 R09:
ffff81003780e4b8
[ 52.031412] R10: ffffffff803b01d9 R11: ffff810037f23de8 R12:
000000000000009a
[ 52.038591] R13: 0000000000000000 R14: ffff810037f23c90 R15:
00000000000005a8
[ 52.045771] FS: 00002b9181d2c6d0(0000) GS:ffffffff804fb000(0000)
knlGS:0000000000000000
[ 52.053920] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[ 52.059714] CR2: 00002b9181bb60e0 CR3: 000000003d109000 CR4:
00000000000006e0
[ 52.066894] Process splice-fromnet (pid: 2604, threadinfo
ffff810037f22000, task ffff8100010f4100)
[ 52.075908] Stack: 00000040000612d0 ffff810037f23c94
ffff81003780e4b8 0000000037f23c78
[ 52.084214] 0000faf20000050e ffff81003780e4b8 ffff81003780e4b8
ffff81003e8f22d8
[ 52.091860] ffff81003c99c820 000000004d5f4ede ffff810037f23dd8
ffffffff8038bf20
[ 52.099265] Call Trace:
[ 52.101998] [<ffffffff8038bf20>] skb_splice_bits+0x6c/0xd0
[ 52.107619] [<ffffffff803dc720>] _read_unlock_irq+0x31/0x4e
[ 52.113330] [<ffffffff803afc1c>] tcp_splice_data_recv+0x20/0x22
[ 52.119386] [<ffffffff803afaf3>] tcp_read_sock+0xa2/0x1ab
[ 52.124920] [<ffffffff803afbfc>] tcp_splice_data_recv+0x0/0x22
[ 52.130888] [<ffffffff803b0232>] tcp_splice_read+0xa1/0x21b
[ 52.136593] [<ffffffff803891cf>] sock_def_readable+0x0/0x6f
[ 52.142303] [<ffffffff80384a25>] sock_splice_read+0x15/0x17
[ 52.148010] [<ffffffff8029e773>] do_splice_to+0x76/0x88
[ 52.153370] [<ffffffff8029fc87>] sys_splice+0x1a8/0x232
[ 52.158733] [<ffffffff802097ce>] system_call+0x7e/0x83
[ 52.164005]
[ 52.165544]
[ 52.165545] Code: 0f 0b eb fe 44 39 65 d4 8b 4d d4 41 0f 47 cc 90 ff
42 08 48
[ 52.175364] RIP [<ffffffff80389b15>] __skb_splice_bits+0xcd/0x201
[ 52.181636] RSP <ffff810037f23c28>
--
Evgeniy Polyakov
next prev parent reply other threads:[~2007-06-12 18:17 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-06-11 11:59 [PATCH][RFC] network splice receive v2 Jens Axboe
2007-06-12 18:17 ` Evgeniy Polyakov [this message]
2007-06-12 18:17 ` Jens Axboe
2007-06-12 18:18 ` Jens Axboe
2007-06-13 8:01 ` Evgeniy Polyakov
2007-06-13 19:50 ` Jens Axboe
2007-06-14 11:57 ` Evgeniy Polyakov
2007-06-14 11:59 ` Jens Axboe
2007-06-15 8:06 ` Evgeniy Polyakov
2007-06-15 8:43 ` Jens Axboe
2007-06-15 9:14 ` Evgeniy Polyakov
2007-06-15 9:34 ` Jens Axboe
2007-06-15 9:44 ` Evgeniy Polyakov
2007-06-15 13:31 ` Jens Axboe
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