From: "Nicolas de Pesloüan" <nicolas.2p.debian@gmail.com>
To: "netdev@vger.kernel.org" <netdev@vger.kernel.org>,
Jay Vosburgh <fubar@us.ibm.com>
Subject: bonding: stacking bonding interfaces may lead to oops.
Date: Sat, 22 Jan 2011 23:27:33 +0100 [thread overview]
Message-ID: <4D3B59D5.2030909@gmail.com> (raw)
Hi,
While doing some tests with bonding over bonding, I discovered that the following commands cause the
following errors on 2.6.38-rc1 (from net-next-2.6) :
modprobe bonding max_bonds=0
echo +bond0>/sys/class/net/bonding_masters
echo +bond1>/sys/class/net/bonding_masters
echo +eth1>/sys/class/net/bond1/bonding/slaves
echo +bond1>/sys/class/net/bond0/bonding/slaves
modprobe -r bonding
[ 300.525641] bonding: Ethernet Channel Bonding Driver: v3.7.0 (June 2, 2010)
[ 300.527813] bonding: bond0 is being created...
[ 300.533931] bonding: bond1 is being created...
[ 300.538494] bonding: bond1: doing slave updates when interface is down.
[ 300.539884] bonding: bond1: Adding slave eth1.
[ 300.540872] bonding: bond1: master_dev is not up in bond_enslave
[ 300.616961] e1000: eth1 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: RX
[ 300.674624] bonding: bond1: enslaving eth1 as an active interface with an up link.
[ 300.681524] bonding: bond0: doing slave updates when interface is down.
[ 300.682433] bonding: bond0: Adding slave bond1.
[ 300.683055] bonding: bond0: master_dev is not up in bond_enslave
[ 300.697352] bonding: bond0: Warning: failed to get speed and duplex from bond1, assumed to be
100Mb/sec and Full.
[ 300.699066] bonding: bond0: enslaving bond1 as an active interface with an up link.
[ 321.419266] bonding: bond0: released all slaves
[ 321.538024] bonding: bond1: released all slaves
[ 321.552104] PGD 236e8067 PUD 2f619067 PMD 0
[ 321.552104] CPU 1
[ 321.552104] Modules linked in: bonding(-) loop snd_intel8x0 snd_ac97_codec ac97_bus snd_pcm
snd_timer tpm_tis snd tpm i2c_piix4 psmouse tpm_bios parport_pc evdev serio_raw pcspkr parport
i2c_core soundcore ac processor snd_page_alloc battery button thermal_sys ext3 jbd mbcache
ide_gd_mod ide_cd_mod cdrom ata_generic ata_piix libata scsi_mod ohci_hcd piix ehci_hcd usbcore
ide_core floppy e1000 nls_base [last unloaded: bonding]
[ 321.561295]
[ 321.561295] Pid: 1437, comm: modprobe Not tainted 2.6.38-rc1+ #2 /VirtualBox
[ 321.561295] RIP: 0010:[<ffffffff8127a22a>] [<ffffffff8127a22a>] qdisc_destroy+0x9/0x9e
[ 321.561295] RSP: 0018:ffff88003db1be28 EFLAGS: 00010296
[ 321.561295] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff88003e1e4180
[ 321.561295] RDX: ffffffff8163f780 RSI: 0000000000000000 RDI: 0000000000000000
[ 321.561295] RBP: ffff88003db1be88 R08: ffffffff81623a40 R09: ffff8800302725a0
[ 321.561295] R10: 00000000012944d0 R11: ffffffff81043d55 R12: ffff880023728000
[ 321.561295] R13: ffff88003db1be88 R14: ffffffff817fe0b8 R15: 00000000012944d0
[ 321.561295] FS: 00007f58fd01f700(0000) GS:ffff88003fd00000(0000) knlGS:0000000000000000
[ 321.561295] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[ 321.561295] CR2: 0000000000000010 CR3: 000000003005b000 CR4: 00000000000006e0
[ 321.561295] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 321.561295] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[ 321.561295] Process modprobe (pid: 1437, threadinfo ffff88003db1a000, task ffff880030028000)
[ 321.561295] ffff88003db1be88 ffff88003db1bd28 ffff88003db1be88 ffffffff8127a31a
[ 321.561295] ffff88003db1bd28 ffffffff81262f36 ffff88003db1be88 ffffffff817fe040
[ 321.561295] ffffffff817fe038 ffffffff81263037 ffffffffa041e0d0 ffffffff8126e757
[ 321.561295] [<ffffffff8127a31a>] ? dev_shutdown+0x3e/0x67
[ 321.561295] [<ffffffff81262f36>] ? rollback_registered_many+0x12a/0x21d
[ 321.561295] [<ffffffff81263037>] ? unregister_netdevice_many+0xe/0x62
[ 321.561295] [<ffffffff8126e757>] ? __rtnl_link_unregister+0x75/0xc4
[ 321.561295] [<ffffffff8126ea7c>] ? rtnl_link_unregister+0x18/0x21
[ 321.561295] [<ffffffffa0418c8b>] ? bonding_exit+0x37/0x62 [bonding]
[ 321.561295] [<ffffffff81073072>] ? sys_delete_module+0x1ca/0x249
[ 321.561295] [<ffffffff810d287d>] ? do_munmap+0x307/0x329
[ 321.561295] [<ffffffff81317c15>] ? page_fault+0x25/0x30
[ 321.561295] [<ffffffff81009992>] ? system_call_fastpath+0x16/0x1b
[ 321.561295] RSP <ffff88003db1be28>
[ 321.634938] ---[ end trace f286ae8c6c72cd08 ]---
After this, any commands that use the network interfaces hang forever : ipconfig, ip addr, ...
Even shutting down the system is not possible... forced to power off.
Only tested under VirtualBox.
Nicolas.
reply other threads:[~2011-01-22 22:27 UTC|newest]
Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=4D3B59D5.2030909@gmail.com \
--to=nicolas.2p.debian@gmail.com \
--cc=fubar@us.ibm.com \
--cc=netdev@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.