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Message-ID: <513849F8.3090302@linux.vnet.ibm.com>
Date: Thu, 07 Mar 2013 16:04:08 +0800
From: Michael Wang <wangyun@...ux.vnet.ibm.com>
To: Linda Walsh <lkml@...nx.org>
CC: Eric Dumazet <eric.dumazet@...il.com>,
Linux-Kernel <linux-kernel@...r.kernel.org>,
netdev <netdev@...r.kernel.org>, Jay Vosburgh <fubar@...ibm.com>,
Jeff Kirsher <jeffrey.t.kirsher@...el.com>,
Cong Wang <xiyou.wangcong@...il.com>
Subject: Re: upgrade to 3.8.1 : BUG Scheduling while atomic in bonding driver:
On 03/07/2013 03:05 PM, Linda Walsh wrote:
[snip]
> [ 24.820010] BUG: scheduling while atomic: kworker/u:2/109/0x00000002
> [ 24.826415] 4 locks held by kworker/u:2/109:
> [ 24.826425] #0: ((bond_dev->name)){......}, at:
> [<ffffffff8105da4d>] process_one_work+0x13d/0x5d0
> [ 24.826428] #1: ((&(&bond->mii_work)->work)){......}, at:
> [<ffffffff8105da4d>] process_one_work+0x13d/0x5d0
> [ 24.826435] #2: (rtnl_mutex){......}, at: [<ffffffff81590c00>]
> rtnl_trylock+0x10/0x20
> [ 24.826441] #3: (&bond->lock){......}, at: [<ffffffff8145af55>]
> bond_mii_monitor+0x2d5/0x630
> [ 24.826448] Modules linked in: iptable_filter kvm_intel kvm iTCO_wdt
> acpi_cpufreq mperf button mousedev processor
> [ 24.826451] Pid: 109, comm: kworker/u:2 Not tainted 3.8.1-Isht-Van #6
> [ 24.826452] Call Trace:
> [ 24.826459] [<ffffffff8162b039>] __schedule_bug+0x5e/0x6c
> [ 24.826475] [<ffffffff816345a2>] __schedule+0x762/0x7f0
> [ 24.826479] [<ffffffff81634744>] schedule+0x24/0x70
> [ 24.826488] [<ffffffff81633704>]
> schedule_hrtimeout_range_clock+0xa4/0x130
> [ 24.826495] [<ffffffff81068250>] ? update_rmtp+0x60/0x60
> [ 24.826499] [<ffffffff81068f9f>] ? hrtimer_start_range_ns+0xf/0x20
> [ 24.826507] [<ffffffff8163379e>] schedule_hrtimeout_range+0xe/0x10
> [ 24.826512] [<ffffffff8104ec1b>] usleep_range+0x3b/0x40
> [ 24.826518] [<ffffffff814b2d8c>] ixgbe_acquire_swfw_sync_X540+0xbc/0x100
> [ 24.826527] [<ffffffff814aeb1d>] ixgbe_read_phy_reg_generic+0x3d/0x140
> [ 24.826532] [<ffffffff814aedbc>]
> ixgbe_get_copper_link_capabilities_generic+0x2c/0x60
> [ 24.826537] [<ffffffff8145af55>] ? bond_mii_monitor+0x2d5/0x630
> [ 24.826543] [<ffffffff814a64f4>] ixgbe_get_settings+0x34/0x340
> [ 24.826546] [<ffffffff81586ac8>] __ethtool_get_settings+0x88/0x130
> [ 24.826552] [<ffffffff814568a3>] bond_update_speed_duplex+0x23/0x60
> [ 24.826554] [<ffffffff8145afc4>] bond_mii_monitor+0x344/0x630
And both bond_enslave() and bond_mii_monitor() are using bond_update_speed_duplex()
with preempt disabled.
Along with the changes in bond_enslave(), I think you also need this (untested):
diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index 11d01d6..9af143a 100644
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -2373,7 +2373,9 @@ static void bond_miimon_commit(struct bonding *bond)
bond_set_backup_slave(slave);
}
+ read_unlock(&bond->lock);
bond_update_speed_duplex(slave);
+ read_lock(&bond->lock);
pr_info("%s: link status definitely up for interface %s, %u Mbps %s duplex.\n",
bond->dev->name, slave->dev->name,
Regards,
Michael Wang
> [ 24.826556] [<ffffffff8105dab1>] process_one_work+0x1a1/0x5d0
> [ 24.826558] [<ffffffff8105da4d>] ? process_one_work+0x13d/0x5d0
> [ 24.826560] [<ffffffff8145ac80>] ? bond_loadbalance_arp_mon+0x300/0x300
> [ 24.826563] [<ffffffff8105ed60>] worker_thread+0x160/0x3f0
> [ 24.826565] [<ffffffff8105ec00>] ? manage_workers+0x290/0x290
> [ 24.826569] [<ffffffff81064446>] kthread+0xd6/0xe0
> [ 24.826573] [<ffffffff8107004a>] ? finish_task_switch+0x3a/0x100
> [ 24.826576] [<ffffffff81064370>] ? flush_kthread_worker+0x160/0x160
> [ 24.826578] [<ffffffff81636fec>] ret_from_fork+0x7c/0xb0
> [ 24.826580] [<ffffffff81064370>] ? flush_kthread_worker+0x160/0x160
> [ 24.829930] BUG: scheduling while atomic: kworker/u:2/109/0x00000002
> [ 24.836284] 4 locks held by kworker/u:2/109:
> [ 24.836287] #0: ((bond_dev->name)){......}, at:
> [<ffffffff8105da4d>] process_one_work+0x13d/0x5d0
> [ 24.836297] #1: ((&(&bond->mii_work)->work)){......}, at:
> [<ffffffff8105da4d>] process_one_work+0x13d/0x5d0
> [ 24.836304] #2: (rtnl_mutex){......}, at: [<ffffffff81590c00>]
> rtnl_trylock+0x10/0x20
> [ 24.836312] #3: (&bond->lock){......}, at: [<ffffffff8145af55>]
> bond_mii_monitor+0x2d5/0x630
> [ 24.836320] Modules linked in: iptable_filter kvm_intel kvm iTCO_wdt
> acpi_cpufreq mperf button mousedev processor
> [ 24.836334] Pid: 109, comm: kworker/u:2 Tainted: G W
> 3.8.1-Isht-Van #6
> [ 24.836336] Call Trace:
> [ 24.836342] [<ffffffff8162b039>] __schedule_bug+0x5e/0x6c
> [ 24.836348] [<ffffffff816345a2>] __schedule+0x762/0x7f0
> [ 24.836352] [<ffffffff81634744>] schedule+0x24/0x70
> [ 24.836357] [<ffffffff81633704>]
> schedule_hrtimeout_range_clock+0xa4/0x130
> [ 24.836362] [<ffffffff81068250>] ? update_rmtp+0x60/0x60
> [ 24.836366] [<ffffffff81068250>] ? update_rmtp+0x60/0x60
> [ 24.836371] [<ffffffff81068f9f>] ? hrtimer_start_range_ns+0xf/0x20
> [ 24.836375] [<ffffffff8163379e>] schedule_hrtimeout_range+0xe/0x10
> [ 24.836380] [<ffffffff8104ec1b>] usleep_range+0x3b/0x40
> [ 24.836385] [<ffffffff814b2cbe>] ixgbe_release_swfw_sync_X540+0x4e/0x60
> [ 24.836390] [<ffffffff814aebed>] ixgbe_read_phy_reg_generic+0x10d/0x140
> [ 24.836395] [<ffffffff814aedbc>]
> ixgbe_get_copper_link_capabilities_generic+0x2c/0x60
> [ 24.836400] [<ffffffff8145af55>] ? bond_mii_monitor+0x2d5/0x630
> [ 24.836404] [<ffffffff814a64f4>] ixgbe_get_settings+0x34/0x340
> [ 24.836409] [<ffffffff81586ac8>] __ethtool_get_settings+0x88/0x130
> [ 24.836413] [<ffffffff814568a3>] bond_update_speed_duplex+0x23/0x60
> [ 24.836418] [<ffffffff8145afc4>] bond_mii_monitor+0x344/0x630
> [ 24.836422] [<ffffffff8105dab1>] process_one_work+0x1a1/0x5d0
> [ 24.836426] [<ffffffff8105da4d>] ? process_one_work+0x13d/0x5d0
> [ 24.836431] [<ffffffff8145ac80>] ? bond_loadbalance_arp_mon+0x300/0x300
> [ 24.836436] [<ffffffff8105ed60>] worker_thread+0x160/0x3f0
> [ 24.836440] [<ffffffff8105ec00>] ? manage_workers+0x290/0x290
> [ 24.836445] [<ffffffff81064446>] kthread+0xd6/0xe0
> [ 24.836449] [<ffffffff8107004a>] ? finish_task_switch+0x3a/0x100
> [ 24.836455] [<ffffffff81064370>] ? flush_kthread_worker+0x160/0x160
> [ 24.836459] [<ffffffff81636fec>] ret_from_fork+0x7c/0xb0
> [ 24.836464] [<ffffffff81064370>] ? flush_kthread_worker+0x160/0x160
> [ 24.839952] bonding: bond0: link status definitely up for interface
> eth_s2_0, 10000 Mbps full duplex.
> [ 24.839968] bonding: bond0: first active interface up!
> [ 24.955598] e1000e: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow
> Control: Rx/Tx
> [ 25.621770] ixgbe 0000:06:00.1 eth_s2_1: NIC Link is Up 10 Gbps, Flow
> Control: RX/TX
> [ 25.838277] BUG: scheduling while atomic: kworker/u:2/109/0x00000002
> [ 25.844673] 4 locks held by kworker/u:2/109:
> [ 25.844676] #0: ((bond_dev->name)){......}, at:
> [<ffffffff8105da4d>] process_one_work+0x13d/0x5d0
> [ 25.844689] #1: ((&(&bond->mii_work)->work)){......}, at:
> [<ffffffff8105da4d>] process_one_work+0x13d/0x5d0
> [ 25.844705] #2: (rtnl_mutex){......}, at: [<ffffffff81590c00>]
> rtnl_trylock+0x10/0x20
> [ 25.844715] #3: (&bond->lock){......}, at: [<ffffffff8145af55>]
> bond_mii_monitor+0x2d5/0x630
> [ 25.844724] Modules linked in: iptable_filter kvm_intel kvm iTCO_wdt
> acpi_cpufreq mperf button mousedev processor
> [ 25.844740] Pid: 109, comm: kworker/u:2 Tainted: G W
> 3.8.1-Isht-Van #6
> [ 25.844743] Call Trace:
> [ 25.844752] [<ffffffff8162b039>] __schedule_bug+0x5e/0x6c
> [ 25.844759] [<ffffffff816345a2>] __schedule+0x762/0x7f0
> [ 25.844764] [<ffffffff81634744>] schedule+0x24/0x70
> [ 25.844770] [<ffffffff81633704>]
> schedule_hrtimeout_range_clock+0xa4/0x130
> [ 25.844776] [<ffffffff81068250>] ? update_rmtp+0x60/0x60
> [ 25.844781] [<ffffffff81068f9f>] ? hrtimer_start_range_ns+0xf/0x20
> [ 25.844786] [<ffffffff8163379e>] schedule_hrtimeout_range+0xe/0x10
> [ 25.844791] [<ffffffff8104ec1b>] usleep_range+0x3b/0x40
> [ 25.844798] [<ffffffff814b2d8c>] ixgbe_acquire_swfw_sync_X540+0xbc/0x100
> [ 25.844805] [<ffffffff814aeb1d>] ixgbe_read_phy_reg_generic+0x3d/0x140
> [ 25.844811] [<ffffffff814aedbc>]
> ixgbe_get_copper_link_capabilities_generic+0x2c/0x60
> [ 25.844818] [<ffffffff8145af55>] ? bond_mii_monitor+0x2d5/0x630
> [ 25.844832] [<ffffffff814a64f4>] ixgbe_get_settings+0x34/0x340
> [ 25.844845] [<ffffffff81586ac8>] __ethtool_get_settings+0x88/0x130
> [ 25.844858] [<ffffffff814568a3>] bond_update_speed_duplex+0x23/0x60
> [ 25.844866] [<ffffffff8145afc4>] bond_mii_monitor+0x344/0x630
> [ 25.844871] [<ffffffff8105dab1>] process_one_work+0x1a1/0x5d0
> [ 25.844875] [<ffffffff8105da4d>] ? process_one_work+0x13d/0x5d0
> [ 25.844880] [<ffffffff8145ac80>] ? bond_loadbalance_arp_mon+0x300/0x300
> [ 25.844885] [<ffffffff8105ed60>] worker_thread+0x160/0x3f0
> [ 25.844890] [<ffffffff8105ec00>] ? manage_workers+0x290/0x290
> [ 25.844896] [<ffffffff81064446>] kthread+0xd6/0xe0
> [ 25.844901] [<ffffffff8107004a>] ? finish_task_switch+0x3a/0x100
> [ 25.844907] [<ffffffff81064370>] ? flush_kthread_worker+0x160/0x160
> [ 25.844911] [<ffffffff81636fec>] ret_from_fork+0x7c/0xb0
> [ 25.844916] [<ffffffff81064370>] ? flush_kthread_worker+0x160/0x160
> [ 25.848369] BUG: scheduling while atomic: kworker/u:2/109/0x00000002
> [ 25.854761] 4 locks held by kworker/u:2/109:
> [ 25.854764] #0: ((bond_dev->name)){......}, at:
> [<ffffffff8105da4d>] process_one_work+0x13d/0x5d0
> [ 25.854774] #1: ((&(&bond->mii_work)->work)){......}, at:
> [<ffffffff8105da4d>] process_one_work+0x13d/0x5d0
> [ 25.854781] #2: (rtnl_mutex){......}, at: [<ffffffff81590c00>]
> rtnl_trylock+0x10/0x20
> [ 25.854790] #3: (&bond->lock){......}, at: [<ffffffff8145af55>]
> bond_mii_monitor+0x2d5/0x630
> [ 25.854798] Modules linked in: iptable_filter kvm_intel kvm iTCO_wdt
> acpi_cpufreq mperf button mousedev processor
> [ 25.854812] Pid: 109, comm: kworker/u:2 Tainted: G W
> 3.8.1-Isht-Van #6
> [ 25.854814] Call Trace:
> [ 25.854820] [<ffffffff8162b039>] __schedule_bug+0x5e/0x6c
> [ 25.854826] [<ffffffff816345a2>] __schedule+0x762/0x7f0
> [ 25.854831] [<ffffffff81634744>] schedule+0x24/0x70
> [ 25.854835] [<ffffffff81633704>]
> schedule_hrtimeout_range_clock+0xa4/0x130
> [ 25.854840] [<ffffffff81068250>] ? update_rmtp+0x60/0x60
> [ 25.854844] [<ffffffff81068250>] ? update_rmtp+0x60/0x60
> [ 25.854849] [<ffffffff81068f9f>] ? hrtimer_start_range_ns+0xf/0x20
> [ 25.854854] [<ffffffff8163379e>] schedule_hrtimeout_range+0xe/0x10
> [ 25.854858] [<ffffffff8104ec1b>] usleep_range+0x3b/0x40
> [ 25.854863] [<ffffffff814b2cbe>] ixgbe_release_swfw_sync_X540+0x4e/0x60
> [ 25.854869] [<ffffffff814aebed>] ixgbe_read_phy_reg_generic+0x10d/0x140
> [ 25.854874] [<ffffffff814aedbc>]
> ixgbe_get_copper_link_capabilities_generic+0x2c/0x60
> [ 25.854879] [<ffffffff8145af55>] ? bond_mii_monitor+0x2d5/0x630
> [ 25.854883] [<ffffffff814a64f4>] ixgbe_get_settings+0x34/0x340
> [ 25.854888] [<ffffffff81586ac8>] __ethtool_get_settings+0x88/0x130
> [ 25.854892] [<ffffffff814568a3>] bond_update_speed_duplex+0x23/0x60
> [ 25.854897] [<ffffffff8145afc4>] bond_mii_monitor+0x344/0x630
> [ 25.854901] [<ffffffff8105dab1>] process_one_work+0x1a1/0x5d0
> [ 25.854905] [<ffffffff8105da4d>] ? process_one_work+0x13d/0x5d0
> [ 25.854910] [<ffffffff8145ac80>] ? bond_loadbalance_arp_mon+0x300/0x300
> [ 25.854915] [<ffffffff8105ed60>] worker_thread+0x160/0x3f0
> [ 25.854920] [<ffffffff8105ec00>] ? manage_workers+0x290/0x290
> [ 25.854925] [<ffffffff81064446>] kthread+0xd6/0xe0
> [ 25.854929] [<ffffffff8107004a>] ? finish_task_switch+0x3a/0x100
> [ 25.854935] [<ffffffff81064370>] ? flush_kthread_worker+0x160/0x160
> [ 25.854939] [<ffffffff81636fec>] ret_from_fork+0x7c/0xb0
> [ 25.854944] [<ffffffff81064370>] ? flush_kthread_worker+0x160/0x160
> [ 25.858392] bonding: bond0: link status definitely up for interface
> eth_s2_1, 10000 Mbps full duplex.
> [ 27.292402] bnx2 0000:01:00.1 eth3: NIC Copper Link is Up, 1000 Mbps
> full duplex
> [ 27.292406] , receive & transmit flow control ON
> [ 28.682172] e1000e: eth1 NIC Link is Up 1000 Mbps Full Duplex, Flow
> Control: Rx/Tx
> [ 29.037441] Status code returned 0xc000005e NT_STATUS_NO_LOGON_SERVERS
> [ 29.037451] CIFS VFS: Send error in SessSetup = -5
> [ 29.043058] CIFS VFS: cifs_mount failed w/return code = -5
> [ 30.005962] Status code returned 0xc000005e NT_STATUS_NO_LOGON_SERVERS
> [ 30.005971] CIFS VFS: Send error in SessSetup = -5
> [ 30.011333] CIFS VFS: cifs_mount failed w/return code = -5
> [ 31.093294] Status code returned 0xc000000d NT_STATUS_INVALID_PARAMETER
> [ 31.093303] CIFS VFS: Send error in SessSetup = -22
> [ 31.098672] CIFS VFS: cifs_mount failed w/return code = -22
> [ 32.339022] device eth0 entered promiscuous mode
> [ 32.523684] device eth1 entered promiscuous mode
> [ 32.739312] device eth2 entered promiscuous mode
> [ 32.922051] device eth3 entered promiscuous mode
> [ 33.075705] device bond0 entered promiscuous mode
> [ 33.075711] device eth_s2_0 entered promiscuous mode
> [ 33.076022] device eth_s2_1 entered promiscuous mode
> [ 34.783087] u32 classifier
> [ 34.783089] Performance counters on
> [ 34.783090] input device check on
> [ 34.783091] Actions configured
> [ 40.834154] bnx2 0000:01:00.0 eth2: NIC Copper Link is Up, 100 Mbps
> full duplex
> [ 40.834158] , receive & transmit flow control ON
>
>
>
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