Re: sky2 panic in 2.6.32.1 under load (new oops)

From: Michael Breuer
Date: Wed Dec 23 2009 - 17:55:22 EST

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In reply to: Michael Breuer: "Re: sky2 panic in 2.6.32.1 under load"
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Ok - not the firmware. Ran another Windows backup and sky2 went down.

Nothing in dmesg.old - have oops in syslog. System became unresponsive and watchdog kicked in after a minute.

Also note that I have a similar oops with VT-D disabled (posted here on 12/5). I'm attaching the oops from that below this oops for comparison. That also happened under similar load.

On the assumption that I can recreate this (although it takes a while) please let me know how I can help.

What's in my log (starting with an smbd error about 2 min before the oops (note: the dchpd is not the system doing the backup).

Dec 23 17:31:05 mail smbd[20712]: [2009/12/23 17:31:05, 0] smbd/nttrans.c:2076(call_nt_transact_ioctl)
Dec 23 17:31:05 mail smbd[20712]: call_nt_transact_ioctl(0x900eb): Currently not implemented.
Dec 23 17:31:34 mail clamd[3449]: SelfCheck: Database status OK.
Dec 23 17:32:22 mail named[4284]: client 208.78.169.235#32797: view External: query (cache) './NS/IN' denied
Dec 23 17:32:22 mail named[4284]: client 208.78.169.235#32797: view External: query (cache) './NS/IN' denied
Dec 23 17:32:22 mail named[4284]: client 208.78.169.235#32797: view External: query (cache) './NS/IN' denied
Dec 23 17:32:54 mail dhcpd: DHCPINFORM from 10.0.0.3 via eth0
Dec 23 17:32:54 mail dhcpd: DHCPACK to 10.0.0.3 (00:21:5d:cb:a1:74) via eth0
Dec 23 17:32:58 mail kernel: DRHD: handling fault status reg 2
Dec 23 17:32:58 mail kernel: DMAR:[DMA Read] Request device [06:00.0] fault addr fff8423fe000
Dec 23 17:32:58 mail kernel: DMAR:[fault reason 06] PTE Read access is not set
Dec 23 17:32:58 mail kernel: sky2 0000:06:00.0: error interrupt status=0x80000000
Dec 23 17:32:58 mail kernel: sky2 0000:06:00.0: PCI hardware error (0x2010)
Dec 23 17:33:06 mail kernel: ------------[ cut here ]------------
Dec 23 17:33:06 mail kernel: WARNING: at net/sched/sch_generic.c:255 dev_watchdog+0xf3/0x161()
Dec 23 17:33:06 mail kernel: Hardware name: System Product Name
Dec 23 17:33:06 mail kernel: NETDEV WATCHDOG: eth0 (sky2): transmit queue 0 timed out
Dec 23 17:33:06 mail kernel: Modules linked in: ip6table_filter ip6table_mangle ip6_tables iptable_raw iptable_mangle ipt_MASQUERADE iptable_nat nf_nat bridge stp appletalk psnap llc nfsd lockd nfs_acl auth_rpcgss exportfs sunrpc hwmon_vid coretemp acpi_cpufreq sit tunnel4 ipt_LOG nf_conntrack_netbios_ns nf_conntrack_ftp xt_DSCP xt_dscp xt_MARK nf_conntrack_ipv6 xt_multiport ipv6 dm_multipath kvm_intel kvm snd_hda_codec_analog snd_ens1371 gameport snd_hda_intel snd_hda_codec snd_rawmidi snd_ac97_codec ac97_bus snd_hwdep snd_seq snd_seq_device snd_pcm snd_timer gspca_spca505 snd gspca_main soundcore snd_page_alloc videodev firewire_ohci sky2 v4l1_compat v4l2_compat_ioctl32 firewire_core iTCO_wdt wmi asus_atk0110 iTCO_vendor_support i2c_i801 hwmon pcspkr crc_itu_t raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx raid1 ata_generic pata_acpi pata_marvell nouveau ttm drm_kms_helper drm agpgart fb i2c_algo_bit cfbcopyarea i2c_core cfbimgblt cfbfillrect [last unloaded: ip6_tables]
Dec 23 17:33:06 mail kernel: Pid: 0, comm: swapper Tainted: G W 2.6.32-09281-g1c42cda #6
Dec 23 17:33:06 mail kernel: Call Trace:
Dec 23 17:33:06 mail kernel: <IRQ> [<ffffffff8104afbd>] warn_slowpath_common+0x7c/0x94
Dec 23 17:33:06 mail kernel: [<ffffffff8104b02c>] warn_slowpath_fmt+0x41/0x43
Dec 23 17:33:06 mail kernel: [<ffffffff813d096f>] ? netif_tx_lock+0x44/0x6c
Dec 23 17:33:06 mail kernel: [<ffffffff813d0ad7>] dev_watchdog+0xf3/0x161
Dec 23 17:33:06 mail kernel: [<ffffffff8105610c>] ? cascade+0x6a/0x84
Dec 23 17:33:06 mail kernel: [<ffffffff81058558>] run_timer_softirq+0x1c8/0x270
Dec 23 17:33:06 mail kernel: [<ffffffff81051595>] __do_softirq+0xf8/0x1cd
Dec 23 17:33:06 mail kernel: [<ffffffff810720af>] ? tick_program_event+0x2a/0x2c
Dec 23 17:33:06 mail kernel: [<ffffffff8100ab1c>] call_softirq+0x1c/0x30
Dec 23 17:33:06 mail kernel: [<ffffffff8100c2b3>] do_softirq+0x4b/0xa3
Dec 23 17:33:06 mail kernel: [<ffffffff81051181>] irq_exit+0x4a/0x8c
Dec 23 17:33:06 mail kernel: [<ffffffff8145ed99>] smp_apic_timer_interrupt+0x86/0x94
Dec 23 17:33:06 mail kernel: [<ffffffff8100a5d3>] apic_timer_interrupt+0x13/0x20
Dec 23 17:33:06 mail kernel: <EOI> [<ffffffff812ae5fa>] ? acpi_idle_enter_bm+0x256/0x28a
Dec 23 17:33:06 mail kernel: [<ffffffff812ae5f3>] ? acpi_idle_enter_bm+0x24f/0x28a
Dec 23 17:33:06 mail kernel: [<ffffffff81393308>] cpuidle_idle_call+0x9e/0xfa
Dec 23 17:33:06 mail kernel: [<ffffffff81008c05>] cpu_idle+0xb4/0xf6
Dec 23 17:33:06 mail kernel: [<ffffffff814532b2>] start_secondary+0x201/0x242
Dec 23 17:33:06 mail kernel: ---[ end trace 57f7151f6a5def07 ]---
Dec 23 17:33:06 mail kernel: sky2 eth0: tx timeout
Dec 23 17:33:06 mail kernel: sky2 eth0: disabling interface
Dec 23 17:33:06 mail kernel: sky2 eth0: enabling interface
Dec 23 17:33:06 mail NetworkManager: <info> (eth0): carrier now OFF (device state 1)
Dec 23 17:33:11 mail kernel: sky2 eth0: Link is up at 1000 Mbps, full duplex, flow control both
Dec 23 17:33:11 mail NetworkManager: <info> (eth0): carrier now ON (device state 1)
Dec 23 17:33:26 mail kernel: sky2 eth0: tx timeout
Dec 23 17:33:26 mail kernel: sky2 eth0: disabling interface
Dec 23 17:33:26 mail kernel: sky2 eth0: enabling interface
Dec 23 17:33:26 mail NetworkManager: <info> (eth0): carrier now OFF (device state 1)
Dec 23 17:33:28 mail named[4284]: client 114.80.99.2#44695: view External: query (cache) './NS/IN' denied
Dec 23 17:33:28 mail named[4284]: client 114.80.99.2#44695: view External: query (cache) './NS/IN' denied
Dec 23 17:33:28 mail named[4284]: client 114.80.99.2#44695: view External: query (cache) './NS/IN' denied
Dec 23 17:33:29 mail named[4284]: client 114.80.99.2#44695: view External: query (cache) './NS/IN' denied
Dec 23 17:33:29 mail named[4284]: client 114.80.99.2#44695: view External: query (cache) './NS/IN' denied
Dec 23 17:33:29 mail kernel: sky2 eth0: Link is up at 1000 Mbps, full duplex, flow control both
Dec 23 17:33:29 mail NetworkManager: <info> (eth0): carrier now ON (device state 1)
Dec 23 17:33:30 mail named[4284]: client 114.80.99.2#44695: view External: query (cache) './NS/IN' denied
Dec 23 17:33:38 mail named[4284]: error (connection refused) resolving '121.93.27.216.blackholes.mail-abuse.org/A/IN': 168.61.5.195#53
Dec 23 17:33:44 mail kernel: sky2 eth0: tx timeout
Dec 23 17:33:44 mail kernel: sky2 eth0: disabling interface
Dec 23 17:33:44 mail kernel: sky2 eth0: enabling interface
Dec 23 17:33:44 mail NetworkManager: <info> (eth0): carrier now OFF (device state 1)
Dec 23 17:33:49 mail kernel: sky2 eth0: Link is up at 1000 Mbps, full duplex, flow control both
Dec 23 17:33:49 mail NetworkManager: <info> (eth0): carrier now ON (device state 1)
Dec 23 17:33:52 mail dhcpd: DHCPINFORM from 10.0.0.11 via eth0
Dec 23 17:33:52 mail dhcpd: DHCPACK to 10.0.0.11 (00:1a:92:8d:30:81) via eth0
Dec 23 17:34:01 mail smbd[24783]: [2009/12/23 17:34:01, 0] lib/util_sock.c:539(read_fd_with_timeout)
Dec 23 17:34:01 mail smbd[24783]: [2009/12/23 17:34:01, 0] lib/util_sock.c:1491(get_peer_addr_internal)
Dec 23 17:34:01 mail smbd[24783]: getpeername failed. Error was Transport endpoint is not connected
Dec 23 17:34:01 mail smbd[24783]: read_fd_with_timeout: client 0.0.0.0 read error = Connection reset by peer.
Dec 23 17:34:04 mail abrt: Kerneloops: Reported 1 kernel oopses to Abrt
Dec 23 17:34:04 mail abrtd: Directory 'kerneloops-1261607644-1' creation detected
Dec 23 17:34:04 mail abrtd: Getting local universal unique identification
Dec 23 17:34:04 mail abrtd: New crash, saving
Dec 23 17:34:04 mail abrtd: Activation of plugin 'RunApp' was not successful: Plugin 'RunApp' is not registered
Dec 23 17:34:04 mail kernel: sky2 eth0: tx timeout
Dec 23 17:34:04 mail kernel: sky2 eth0: disabling interface
Dec 23 17:34:04 mail kernel: sky2 eth0: enabling interface
Dec 23 17:34:04 mail NetworkManager: <info> (eth0): carrier now OFF (device state 1)
Dec 23 17:34:09 mail kernel: sky2 eth0: Link is up at 1000 Mbps, full duplex, flow control both
Dec 23 17:34:09 mail NetworkManager: <info> (eth0): carrier now ON (device state 1)
Dec 23 17:34:11 mail logger: ping of potter failed
Dec 23 17:34:19 mail kernel: sky2 eth0: tx timeout
Dec 23 17:34:19 mail kernel: sky2 eth0: disabling interface
Dec 23 17:34:19 mail kernel: sky2 eth0: enabling interface
Dec 23 17:34:19 mail NetworkManager: <info> (eth0): carrier now OFF (device state 1)
Dec 23 17:34:22 mail kernel: sky2 eth0: Link is up at 1000 Mbps, full duplex, flow control both
Dec 23 17:34:22 mail NetworkManager: <info> (eth0): carrier now ON (device state 1)
Dec 23 17:37:40 mail kernel: imklog 4.4.2, log source = /proc/kmsg started.

Oops from 12/5 (no vt-d; no intel_iommu, firmware .12)

Dec 5 11:27:41 mail kernel: ------------[ cut here ]------------
Dec 5 11:27:41 mail kernel: WARNING: at lib/dma-debug.c:898 check_sync+0xbd/0x426()
Dec 5 11:27:41 mail kernel: Hardware name: System Product Name
Dec 5 11:27:41 mail kernel: sky2 0000:06:00.0: DMA-API: device driver tries to sync DMA memory it has not allocated [device address=0x000000031a57e022] [size=66 bytes]
Dec 5 11:27:41 mail kernel: Modules linked in: bridge stp appletalk psnap llc nfsd lockd nfs_acl auth_rpcgss exportfs sunrpc hwmon_vid coretemp acpi_cpufreq sit tunnel4 ipt_LOG ipt_MASQUERADE iptable_nat nf_nat iptable_mangle iptable_raw nf_conntrack_netbios_ns nf_conntrack_ftp nf_conntrack_ipv6 xt_multiport ip6table_filter xt_DSCP xt_dscp xt_MARK ip6table_mangle ip6_tables ipv6 dm_multipath kvm_intel kvm snd_hda_codec_analog snd_ens1371 gameport snd_rawmidi snd_ac97_codec snd_hda_intel snd_hda_codec ac97_bus gspca_spca505 snd_hwdep snd_seq snd_seq_device firewire_ohci gspca_main snd_pcm videodev firewire_core sky2 snd_timer v4l1_compat wmi snd v4l2_compat_ioctl32 soundcore crc_itu_t snd_page_alloc asus_atk0110 i2c_i801 iTCO_wdt iTCO_vendor_support pcspkr hwmon raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx raid1 ata_generic pata_acpi pata_marvell nouveau ttm drm_kms_helper drm agpgart fb i2c_algo_bit cfbcopyarea i2c_core cfbimgblt cfbfillrect [last unloaded: scsi_wait_scan]
Dec 5 11:27:41 mail kernel: Pid: 0, comm: swapper Not tainted 2.6.32-00573-g6cf4d67 #2
Dec 5 11:27:41 mail kernel: Call Trace:
Dec 5 11:27:41 mail kernel: <IRQ> [<ffffffff8105365a>] warn_slowpath_common+0x7c/0x94
Dec 5 11:27:41 mail kernel: [<ffffffff810536c9>] warn_slowpath_fmt+0x41/0x43
Dec 5 11:27:41 mail kernel: [<ffffffff8127b1fd>] check_sync+0xbd/0x426
Dec 5 11:27:41 mail kernel: [<ffffffff813ca254>] ? __netdev_alloc_skb+0x34/0x50
Dec 5 11:27:41 mail kernel: [<ffffffff8127b8b9>] debug_dma_sync_single_for_cpu+0x42/0x44
Dec 5 11:27:41 mail kernel: [<ffffffff81278c5f>] ? swiotlb_sync_single+0x2a/0xb6
Dec 5 11:27:41 mail kernel: [<ffffffff81278dbb>] ? swiotlb_sync_single_for_cpu+0xc/0xe
Dec 5 11:27:41 mail kernel: [<ffffffffa01cee83>] sky2_poll+0x4c6/0xae1 [sky2]
Dec 5 11:27:41 mail kernel: [<ffffffff8146bb1a>] ? _spin_unlock_irqrestore+0x29/0x41
Dec 5 11:27:41 mail kernel: [<ffffffff813d0ef2>] net_rx_action+0xb5/0x1f3
Dec 5 11:27:41 mail kernel: [<ffffffff8105ae3b>] __do_softirq+0xf8/0x1cd
Dec 5 11:27:41 mail kernel: [<ffffffff810a2dea>] ? handle_IRQ_event+0x119/0x12b
Dec 5 11:27:41 mail kernel: [<ffffffff81012e1c>] call_softirq+0x1c/0x30
Dec 5 11:27:41 mail kernel: [<ffffffff810143a3>] do_softirq+0x4b/0xa6
Dec 5 11:27:41 mail kernel: [<ffffffff8105aa1b>] irq_exit+0x4a/0x8c
Dec 5 11:27:41 mail kernel: [<ffffffff8146fb75>] do_IRQ+0xa5/0xbc
Dec 5 11:27:41 mail kernel: [<ffffffff81012613>] ret_from_intr+0x0/0x16
Dec 5 11:27:41 mail kernel: <EOI> [<ffffffff812c6b3e>] ? acpi_idle_enter_bm+0x256/0x28a
Dec 5 11:27:41 mail kernel: [<ffffffff812c6b37>] ? acpi_idle_enter_bm+0x24f/0x28a
Dec 5 11:27:41 mail kernel: [<ffffffff813a6280>] ? cpuidle_idle_call+0x9e/0xfa
Dec 5 11:27:41 mail kernel: [<ffffffff81010c90>] ? cpu_idle+0xb4/0xf6
Dec 5 11:27:41 mail kernel: [<ffffffff814651f2>] ? start_secondary+0x201/0x242
Dec 5 11:27:41 mail kernel: ---[ end trace ff8485ac82013a8d ]---
On 12/22/2009 01:50 PM, Michael Breuer wrote:

I updated my firmware (Marvell/Yukon)) from .12 to .14. Going to leave my kernel version unchanged for the next week or so and see if this recurs.
On 12/21/2009 7:09 PM, Michael Breuer wrote:
Just an FYI - I got one of these today as well - also 2.6.32 (last git before 2.6.33 rc1). I also had two similar events previously - one 2.6.31, and one 2.6.32 rc7.

I was doing some research today and came across a fair sampling of error reports all suggesting that new firmware is a solution. Gigabyte (not my MB) has firmware posted, but I haven't yet attempted to apply it (nor am I sure how to test it after doing so).

For what it's worth, my three recent events were heavy smb usage - windows system backing up. Today's event did not generate an oops as my watchdog kicked in and rebooted the system after the kernel reported a sky2 error.

The last messages before watchdog:
Dec 20 05:33:58 mail kernel: DRHD: handling fault status reg 2
Dec 20 05:33:58 mail kernel: DMAR:[DMA Read] Request device [06:00.0] fault addr ffe1a7ffe000
Dec 20 05:33:58 mail kernel: DMAR:[fault reason 06] PTE Read access is not set
Dec 20 05:33:58 mail kernel: sky2 0000:06:00.0: error interrupt status=0x80000000
Dec 20 05:33:58 mail kernel: sky2 0000:06:00.0: PCI hardware error (0x2010)

During the previous event I had vt-d disabled - it was enabled this time.

On 12/21/2009 6:52 PM, Berck E. Nash wrote:
Since 2.6.32, I've been getting kernel panics under heavy network load
(bittorrent usage).

[ 8673.345873] sky2 eth0: receiver hang detected
[ 8673.350368] sky2 eth0: disabling interface
[ 8673.354749] BUG: unable to handle kernel NULL pointer dereference at
0000000000000010
[ 8673.359748] IP: [<ffffffffa00373d3>] sky2_xmit_frame+0x321/0x5d8 [sky2]
[ 8673.364675] PGD a09a6067 PUD a09a5067 PMD 0
[ 8673.373838] Oops: 0002 [#1] SMP
[ 8673.373838] last sysfs file: /sys/devices/platform/coretemp.1/temp1_label
[ 8673.383900] CPU 0
[ 8673.383900] Modules linked in: nfsd exportfs nfs lockd nfs_acl
auth_rpcgss sunrpc nls_cp437 msdos fat kvm_intel kvm fuse snd_rtctimer
hwmon_vid nvidia(P) usbhid tuner_simple tuner_types wm8775 tda9887
snd_hda_codec_realtek tda8290 snd_hda_intel tuner snd_hda_codec
snd_pcm_oss snd_mixer_oss snd_pcm cx25840 snd_seq_dummy snd_seq_oss
snd_seq_midi_event ivtv snd_seq i2c_algo_bit cx2341x v4l2_common
snd_timer videodev uhci_hcd snd_seq_device v4l1_compat ehci_hcd snd
v4l2_compat_ioctl32 i2c_i801 soundcore snd_page_alloc floppy sky2
usbcore tveeprom
[ 8673.435268] Pid: 4, comm: ksoftirqd/0 Tainted: P 2.6.32.1
#3 P5W DH Deluxe
[ 8673.438943] RIP: 0010:[<ffffffffa00373d3>] [<ffffffffa00373d3>]
sky2_xmit_frame+0x321/0x5d8 [sky2]
[ 8673.448539] RSP: 0018:ffff880001603df8 EFLAGS: 00010246
[ 8673.458678] RAX: 0000000000000000 RBX: ffff8800bd201d40 RCX:
0000000000000000
[ 8673.465016] RDX: 0000000000000000 RSI: 000000000000008c RDI:
0000000000000000
[ 8673.472396] RBP: ffff880001603e48 R08: 0000000000000001 R09:
0000000000000000
[ 8673.474083] R10: 000000000000001e R11: 0000000000000ef8 R12:
ffff88009bf3ab48
[ 8673.484317] R13: ffff8800bef4d000 R14: 0000000000000000 R15:
00000000955fa87e
[ 8673.492381] FS: 0000000000000000(0000) GS:ffff880001600000(0000)
knlGS:0000000000000000
[ 8673.501448] CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b
[ 8673.509707] CR2: 0000000000000010 CR3: 00000000a09bf000 CR4:
00000000000026f0
[ 8673.514146] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
[ 8673.520661] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7:
0000000000000400
[ 8673.528842] Process ksoftirqd/0 (pid: 4, threadinfo ffff8800bf8b4000,
task ffff8800bf8a8650)
[ 8673.539212] Stack:
[ 8673.539212] ffff8800992f5980 ffff8800955fa87e ffff8800bd201800
000000428122a659
[ 8673.548658]<0> ffff880001603e48 ffff88009bf3ab48 ffff8800992f5980
ffffffff813eaf30
[ 8673.556929]<0> ffff8800bd201800 ffff8800bef03940 ffff880001603e98
ffffffff81231de8
[ 8673.565432] Call Trace:
[ 8673.565432]<IRQ>
[ 8673.565432] [<ffffffff81231de8>] dev_hard_start_xmit+0x21c/0x2b7
[ 8673.574516] [<ffffffff81041746>] ? run_timer_softirq+0x4f/0x1c9
[ 8673.579515] [<ffffffff81240252>] sch_direct_xmit+0x5e/0x154
[ 8673.584559] [<ffffffff81240404>] __qdisc_run+0xbc/0xd5
[ 8673.592673] [<ffffffff8122fb19>] net_tx_action+0xbb/0x10e
[ 8673.598719] [<ffffffff8103dc16>] __do_softirq+0x91/0x11b
[ 8673.601787] [<ffffffff8100be9c>] call_softirq+0x1c/0x28
[ 8673.609833]<EOI>
[ 8673.610994] [<ffffffff8100d907>] do_softirq+0x33/0x6b
[ 8673.614419] [<ffffffff8103d71e>] ksoftirqd+0x60/0xd7
[ 8673.620082] [<ffffffff8103d6be>] ? ksoftirqd+0x0/0xd7
[ 8673.620082] [<ffffffff8104aee7>] kthread+0x7a/0x82
[ 8673.629310] [<ffffffff8100bd9a>] child_rip+0xa/0x20
[ 8673.634137] [<ffffffff8104ae6d>] ? kthread+0x0/0x82
[ 8673.639492] [<ffffffff8100bd90>] ? child_rip+0x0/0x20
[ 8673.647639] Code: 06 00 00 00 00 89 08 66 c7 40 04 00 00 c6 40 06 01
c6 40 07 9f 41 0f b7 c6 48 89 c7 48 c1 e0 03 48 c1 e7 05 48 89 f9 48 03
4b 20<4c> 89 79 10 48 c7 41 08 01 00 00 00 8b 75 cc 89 71 18 48 03 7b
[ 8673.667726] RIP [<ffffffffa00373d3>] sky2_xmit_frame+0x321/0x5d8 [sky2]
[ 8673.674902] RSP<ffff880001603df8>
[ 8673.674902] CR2: 0000000000000010
[ 8673.682956] hda-intel: IRQ timing workaround is activated for card
#0. Suggest a bigger bdl_pos_adj.
[ 8673.683015] ---[ end trace 2c387977cf1c7c9a ]---
[ 8673.683017] Kernel panic - not syncing: Fatal exception in interrupt
[ 8673.683020] Pid: 4, comm: ksoftirqd/0 Tainted: P D 2.6.32.1 #3
[ 8673.683021] Call Trace:
[ 8673.683023]<IRQ> [<ffffffff8129839d>] panic+0x75/0x11c
[ 8673.683030] [<ffffffff8100e9a7>] oops_end+0x81/0x8e
[ 8673.683033] [<ffffffff81026e5f>] no_context+0x1ee/0x1fd
[ 8673.683036] [<ffffffff81032a6d>] ? find_busiest_group+0x387/0x8d8
[ 8673.683039] [<ffffffff81026fe0>] __bad_area_nosemaphore+0x172/0x195
[ 8673.683041] [<ffffffff81027011>] bad_area_nosemaphore+0xe/0x10
[ 8673.683044] [<ffffffff8102724b>] do_page_fault+0x114/0x252
[ 8673.683047] [<ffffffff8129a97f>] page_fault+0x1f/0x30
[ 8673.683054] [<ffffffffa00373d3>] ? sky2_xmit_frame+0x321/0x5d8 [sky2]
[ 8673.683058] [<ffffffffa00371b8>] ? sky2_xmit_frame+0x106/0x5d8 [sky2]
[ 8673.683061] [<ffffffff81231de8>] dev_hard_start_xmit+0x21c/0x2b7
[ 8673.683065] [<ffffffff81041746>] ? run_timer_softirq+0x4f/0x1c9
[ 8673.683067] [<ffffffff81240252>] sch_direct_xmit+0x5e/0x154
[ 8673.683070] [<ffffffff81240404>] __qdisc_run+0xbc/0xd5
[ 8673.683072] [<ffffffff8122fb19>] net_tx_action+0xbb/0x10e
[ 8673.683075] [<ffffffff8103dc16>] __do_softirq+0x91/0x11b
[ 8673.683078] [<ffffffff8100be9c>] call_softirq+0x1c/0x28
[ 8673.683079]<EOI> [<ffffffff8100d907>] do_softirq+0x33/0x6b
[ 8673.683083] [<ffffffff8103d71e>] ksoftirqd+0x60/0xd7
[ 8673.683085] [<ffffffff8103d6be>] ? ksoftirqd+0x0/0xd7
[ 8673.683088] [<ffffffff8104aee7>] kthread+0x7a/0x82
[ 8673.683090] [<ffffffff8100bd9a>] child_rip+0xa/0x20
[ 8673.683093] [<ffffffff8104ae6d>] ? kthread+0x0/0x82
[ 8673.683095] [<ffffffff8100bd90>] ? child_rip+0x0/0x20

Note that sometimes I get the receiver hang and things continue without
the crash:

[ 1219.346571] sky2 eth0: receiver hang detected
[ 1219.351145] sky2 eth0: disabling interface
[ 1219.357389] sky2 eth0: enabling interface
[ 1222.572980] sky2 eth0: Link is up at 1000 Mbps, full duplex, flow
control both

Please CC as I'm not subscribed.

Thanks,
Berck Nash
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