From mboxrd@z Thu Jan 1 00:00:00 1970 From: Johannes Berg Subject: sungem triggers NAPI warning Date: Tue, 19 Feb 2008 22:38:43 +0100 Message-ID: <1203457124.3874.2.camel@johannes.berg> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="=-QzqwynczcrgBSNPyAFnW" Cc: Benjamin Herrenschmidt To: netdev@vger.kernel.org Return-path: Received: from crystal.sipsolutions.net ([195.210.38.204]:60427 "EHLO sipsolutions.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750852AbYBTSYp (ORCPT ); Wed, 20 Feb 2008 13:24:45 -0500 Sender: netdev-owner@vger.kernel.org List-ID: --=-QzqwynczcrgBSNPyAFnW Content-Type: text/plain Content-Transfer-Encoding: quoted-printable I started getting this warning with recent kernels: [ 773.908927] ------------[ cut here ]------------ [ 773.908954] Badness at net/core/dev.c:2204 [ 773.908958] NIP: c0277960 LR: c0277948 CTR: c02b9948 [ 773.908963] REGS: ee8f1800 TRAP: 0700 Not tainted (2.6.25-rc2-00261-g= 54a6132-dirty) [ 773.908966] MSR: 00029032 CR: 84224448 XER: 20000000 [ 773.908976] TASK =3D eefa0e00[3143] 'Xorg' THREAD: ee8f0000 [ 773.908979] GPR00: 00000001 ee8f18b0 eefa0e00 0000005e ef8d0c30 00000044= 00000000 864a0000=20 [ 773.908988] GPR08: 00004a86 f2280000 00000000 00000044 00000000 101f85a4= 00000000 ee8f1d9c=20 [ 773.908997] GPR16: ee8f1da0 ee8f1da4 00000000 ee8f1d94 ee8f1d98 c0620000= c08751a4 0000b994=20 [ 773.909006] GPR24: c08750e4 00000000 000000ec 0000005e ee8f0000 00000000= 00000040 ef82454c=20 [ 773.909016] NIP [c0277960] net_rx_action+0x190/0x218 [ 773.909027] LR [c0277948] net_rx_action+0x178/0x218 [ 773.909032] Call Trace: [ 773.909035] [ee8f18b0] [c0277948] net_rx_action+0x178/0x218 (unreliable) [ 773.909041] [ee8f18f0] [c0034d9c] __do_softirq+0x84/0xf8 [ 773.909053] [ee8f1910] [c0006aac] do_softirq+0x58/0x5c [ 773.909063] [ee8f1920] [c00348d8] irq_exit+0x60/0x80 [ 773.909068] [ee8f1930] [c0006fcc] do_IRQ+0xa8/0xc8 [ 773.909074] [ee8f1940] [c00129d4] ret_from_except+0x0/0x14 [ 773.909086] --- Exception: 501 at _spin_unlock_irqrestore+0x1c/0x54 [ 773.909094] LR =3D _spin_unlock_irqrestore+0x18/0x54 [ 773.909098] [ee8f1a20] [c01f39c0] tty_ldisc_try+0x54/0x6c [ 773.909108] [ee8f1a40] [c01f4d5c] tty_ldisc_ref_wait+0x18/0xb0 [ 773.909114] [ee8f1a80] [c01f4e54] tty_poll+0x60/0xa8 [ 773.909119] [ee8f1aa0] [c00ad734] do_select+0x294/0x4fc [ 773.909131] [ee8f1d70] [c00adc4c] core_sys_select+0x2b0/0x404 [ 773.909137] [ee8f1ed0] [c00ae510] sys_select+0x140/0x250 [ 773.909142] [ee8f1f10] [c00052ec] ppc_select+0x24/0x150 [ 773.909148] [ee8f1f40] [c0012328] ret_from_syscall+0x0/0x38 [ 773.909153] --- Exception: c01 at 0xfc2b28c [ 773.909179] LR =3D 0x101a4528 [ 773.909181] Instruction dump: [ 773.909185] 4182ff98 801f0010 7fe3fb78 7fc4f378 7c0903a6 4e800421 7c7b1b= 78 7f1bf000=20 [ 773.909193] 4099ff80 80180204 7c000034 5400d97e <0f000000> 2f800000 419e= ff68 38000001=20 with a sungem card. I have no idea what to do about it, it doesn't seem to be fatal in any way either. In order to trigger it, I have to transfer a lot of data. I have triggered it now with a full kernel recompilation using -j6 and distcc onto a fast machine (with tg3 network, direct cable, gbit), and with rsync transferring 26GiB data between the machines. johannes --=-QzqwynczcrgBSNPyAFnW Content-Type: application/pgp-signature; name=signature.asc Content-Description: This is a digitally signed message part -----BEGIN PGP SIGNATURE----- Comment: Johannes Berg (powerbook) iQIVAwUAR7tMYqVg1VMiehFYAQLvJRAAu+C0RgFBsa73gZErtdjB1in1Li6us4WG oUbPeczEnzwCwbuMhO9QOJjFFc8l9Sa9apGd9kUmv9w7VqDgIFV5eoV9OmIKB9zM 9Dn/+iMqJBbnsGygVl9DxE2O+jfq5u5PufjS1iER+H62KY4fhw6U9v9YxAGzNaeP A71ydt23WLhFLglJZL56HFjC7Wa6JKvBYVq9DnRQ7vWxIFphjYENLGe2brnO9mp8 XxH1Ee9geLDCNRys+oSrRmqih5O7HoKiZxQd6hcNp8LfZCO05FWwjIkaESEpkVsD Jrfj1sn5inGzxv0/u7VPC7SlD3gHkM1rS7Oitsp3PF4lYUbDhPpiSmaZDGAXlj2i xJWnMzZCiRwt8aOUGS5kL5CUCmfh0doHAW5MOvTmD0SJsM14QU3JV6jpi5CbWesf v27UrinpYYUSRQMsvejtjAc8lz7u3vLYDsndpMhmAKbcLxkKr3l34keOe/pC32aj G5tNZ62COMc9xGyd5eqcgYSYqRJy2fxXcnVrQmCTQo7foTFSVCXGgNOiAMAz1/wz fCEPWvMgRTmeOcurJQOU4UEqHzPvSmWsOWK1HML7XCFBfP4KS832v9NypCia2lqR fXuDSzmAUKc/Zie5dwyq8EUof6YM2N2TmdtI8ha53Egl9Ca5gnMIKKQhXsTu0T1s J+h27v4Eku8= =+fBe -----END PGP SIGNATURE----- --=-QzqwynczcrgBSNPyAFnW--