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SubjectRe: Regression: sky2 kernel between 3.1 and 3.2.1 (last known good 3.0.9)
On 1/16/2012 11:39 AM, Michael Breuer wrote:
> Synopsis:
>
> Receiving DMAR and other errors after approximately three days of
> uptime. The symptoms exactly match errors seen and then fixed around
> 2.6.32.4.
>
> While the system remains unaffected for too long to do a bisect, I was
> able to confirm that the problem exists in the 3.1 stable branch (I
> jumped from 3.0 to 3.2 when 3.2. was released).
>
> For now I reverted to the sky2.c from 3.0.9 and am running the rest of
> the kernel from 3.1.2, but won't be certain that this works until
> later in the week.
>
> Note that 20 seconds prior to the log extract below were DHCP renewal
> attempts on eth1, the issue below was on eth0. Not sure it's relevant,
> however back in 2010 a preceding DHCP event did turn out to be
> relevant to the manifestation of the bug.
>
> The 3.2.1-dirty I'm running is from git with a single local patch -
> for sidewinder force-feedback support (shouldn't be relevant to the
> sky2 issue).
>
> Log extract:
>
> Jan 16 05:49:46 mail kernel: [198230.628919] DRHD: handling fault
> status reg 2
> Jan 16 05:49:46 mail kernel: [198230.628925] sky2 0000:06:00.0: error
> interrupt status=0x80000000
> Jan 16 05:49:46 mail kernel: [198230.628929] DMAR:[DMA Read] Request
> device [06:00.0] fault addr fff78000
> Jan 16 05:49:46 mail kernel: [198230.628931] DMAR:[fault reason 06]
> PTE Read access is not set
> Jan 16 05:49:46 mail kernel: [198230.628939] sky2 0000:06:00.0: PCI
> hardware error (0x2010)
> Jan 16 05:49:53 mail dhclient[1616]: DHCPREQUEST on eth1 to
> 10.240.184.29 port 67
> Jan 16 05:50:01 mail kernel: [198246.288400] ------------[ cut here
> ]------------
> Jan 16 05:50:01 mail kernel: [198246.288408] WARNING: at
> net/sched/sch_generic.c:255 dev_watchdog+0x247/0x250()
> Jan 16 05:50:01 mail kernel: [198246.288411] Hardware name: System
> Product Name
> Jan 16 05:50:01 mail kernel: [198246.288413] NETDEV WATCHDOG: eth0
> (sky2): transmit queue 0 timed out
> Jan 16 05:50:01 mail kernel: [198246.288415] Modules linked in: tcp_lp
> cpufreq_stats ebtable_nat ebtables nf_conntrack_netbios_ns
> nf_conntrack_broadcast ip6table_mangle ip6table_filter ip6_tables
> iptable_mangle ipt_MASQUERADE iptable_nat nf_nat iptable_raw tun
> bridge stp llc lockd sit tunnel4 ipt_LOG nf_conntrack_ftp
> nf_conntrack_ipv6 nf_defrag_ipv6 xt_CHECKSUM xt_multiport xt_DSCP
> w83627ehf xt_mark xt_dscp hwmon_vid binfmt_misc raid1 btrfs sunrpc
> zlib_deflate libcrc32c snd_hda_codec_analog snd_ens1371 gameport
> snd_hda_intel snd_rawmidi snd_ac97_codec snd_hda_codec snd_hwdep
> ac97_bus snd_seq snd_seq_device snd_pcm gspca_spca505 snd_timer
> gspca_main snd videodev media soundcore i2c_i801 iTCO_wdt microcode
> v4l2_compat_ioctl32 snd_page_alloc i7core_edac sky2 edac_core pcspkr
> iTCO_vendor_support virtio_net virtio virtio_ring kvm_intel kvm uinput
> ipv6 raid456 async_raid6_recov async_pq raid6_pq async_xor
> firewire_ohci firewire_core pata_acpi ata_generic xor async_memcpy
> async_tx crc_itu_t pata_marvell nouveau ttm d
> Jan 16 05:50:01 mail kernel: rm_kms_helper drm i2c_algo_bit i2c_core
> mxm_wmi video [last unloaded: nf_conntrack_broadcast]
> Jan 16 05:50:01 mail kernel: [198246.288487] Pid: 0, comm: swapper/0
> Tainted: G W 3.2.1-dirty #1
> Jan 16 05:50:01 mail kernel: [198246.288489] Call Trace:
> Jan 16 05:50:01 mail kernel: [198246.288491] <IRQ>
> [<ffffffff81050a4f>] warn_slowpath_common+0x7f/0xc0
> Jan 16 05:50:01 mail kernel: [198246.288501] [<ffffffff8101f0bd>] ?
> lapic_next_event+0x1d/0x30
> Jan 16 05:50:01 mail kernel: [198246.288504] [<ffffffff81050b46>]
> warn_slowpath_fmt+0x46/0x50
> Jan 16 05:50:01 mail kernel: [198246.288509] [<ffffffff81009319>] ?
> read_tsc+0x9/0x20
> Jan 16 05:50:01 mail kernel: [198246.288513] [<ffffffff814a81e7>]
> dev_watchdog+0x247/0x250
> Jan 16 05:50:01 mail kernel: [198246.288518] [<ffffffff8105fbbb>]
> run_timer_softirq+0x12b/0x3b0
> Jan 16 05:50:01 mail kernel: [198246.288521] [<ffffffff814a7fa0>] ?
> qdisc_reset+0x50/0x50
> Jan 16 05:50:01 mail kernel: [198246.288525] [<ffffffff81057d18>]
> __do_softirq+0xa8/0x210
> Jan 16 05:50:01 mail kernel: [198246.288529] [<ffffffff8157496c>]
> call_softirq+0x1c/0x30
> Jan 16 05:50:01 mail kernel: [198246.288533] [<ffffffff810041e5>]
> do_softirq+0x65/0xa0
> Jan 16 05:50:01 mail kernel: [198246.288536] [<ffffffff810580fe>]
> irq_exit+0x8e/0xb0
> Jan 16 05:50:01 mail kernel: [198246.288539] [<ffffffff815750a3>]
> do_IRQ+0x63/0xe0
> Jan 16 05:50:01 mail kernel: [198246.288543] [<ffffffff8156ad2e>]
> common_interrupt+0x6e/0x6e
> Jan 16 05:50:01 mail kernel: [198246.288545] <EOI>
> [<ffffffff81307b6d>] ? intel_idle+0xed/0x150
> Jan 16 05:50:01 mail kernel: [198246.288551] [<ffffffff81307b4f>] ?
> intel_idle+0xcf/0x150
> Jan 16 05:50:01 mail kernel: [198246.288555] [<ffffffff8144d331>]
> cpuidle_idle_call+0xc1/0x280
> Jan 16 05:50:01 mail kernel: [198246.288559] [<ffffffff8100122a>]
> cpu_idle+0xca/0x120
> Jan 16 05:50:01 mail kernel: [198246.288563] [<ffffffff8154741e>]
> rest_init+0x72/0x74
> Jan 16 05:50:01 mail kernel: [198246.288568] [<ffffffff81b6abdd>]
> start_kernel+0x3b5/0x3c0
> Jan 16 05:50:01 mail kernel: [198246.288572] [<ffffffff81b6a32b>]
> x86_64_start_reservations+0x132/0x136
> Jan 16 05:50:01 mail kernel: [198246.288576] [<ffffffff81b6a140>] ?
> early_idt_handlers+0x140/0x140
> Jan 16 05:50:01 mail kernel: [198246.288580] [<ffffffff81b6a431>]
> x86_64_start_kernel+0x102/0x111
> Jan 16 05:50:01 mail kernel: [198246.288583] ---[ end trace
> bb26011d21a2b1d7 ]---
> Jan 16 05:50:01 mail kernel: [198246.288586] sky2 0000:06:00.0: eth0:
> tx timeout
> Jan 16 05:50:01 mail kernel: [198246.288593] sky2 0000:06:00.0: eth0:
> transmit ring 115 .. 10 report=115 done=115
>
>
>
FYI - I've been up for four days now without issues running on 3.2.1 +
sky2.c from 3.0.9. Looks like the issue is in fact in one of the
modifications made in sky2.c between those two releases.

--
Mike


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