From: "Jeff V. Merkey" <jmerkey@drdos.com>
To: linux-kernel@vger.kernel.org, jmerkey@drdos.com
Subject: 2.6.9 RCU breakage in dev_queue_xmit
Date: Tue, 09 Nov 2004 10:35:37 -0700 [thread overview]
Message-ID: <4190FFE9.8000203@drdos.com> (raw)
Running dual gigabit interfaces at 196 MB/S (megabytes/second) on
receive, 12 CLK interacket gap time, 1500 bytes payload
at 65000 packets per second per gigabit interface, and retransmitting
received packets at 130 MB/S out of a third gigabit interface
with skb, RCU locks in dev_queue_xmit breaks and enters the following state:
Nov 8 15:38:08 ds kernel: Badness in local_bh_enable at
kernel/softirq.c:141
Nov 8 15:38:08 ds kernel: [<40107d1e>] dump_stack+0x1e/0x30
Nov 8 15:38:08 ds kernel: [<401218b0>] local_bh_enable+0x70/0x80
Nov 8 15:38:08 ds kernel: [<402c5bbb>] dev_queue_xmit+0x11b/0x250
Nov 8 15:38:08 ds kernel: [<f8981cb7>] xmit_skb+0x17/0x20 [dsfs]
Nov 8 15:38:08 ds kernel: [<f8981f8e>] xmit_packet+0x2e/0x80 [dsfs]
Nov 8 15:38:08 ds kernel: [<f89820eb>] regen_data+0x10b/0x290 [dsfs]
Nov 8 15:38:08 ds kernel: [<401052c5>] kernel_thread_helper+0x5/0x10
Nov 8 15:38:08 ds kernel: Badness in local_bh_enable at
kernel/softirq.c:141
Nov 8 15:38:08 ds kernel: [<40107d1e>] dump_stack+0x1e/0x30
Nov 8 15:38:08 ds kernel: [<401218b0>] local_bh_enable+0x70/0x80
Nov 8 15:38:08 ds kernel: [<402c5bbb>] dev_queue_xmit+0x11b/0x250
Nov 8 15:38:08 ds kernel: [<f8981cb7>] xmit_skb+0x17/0x20 [dsfs]
Nov 8 15:38:08 ds kernel: [<f8981f8e>] xmit_packet+0x2e/0x80 [dsfs]
Nov 8 15:38:08 ds kernel: [<f89820eb>] regen_data+0x10b/0x290 [dsfs]
Nov 8 15:38:08 ds kernel: [<401052c5>] kernel_thread_helper+0x5/0x10
And before any of you guys whine about "give me a test case" I just
did. Device driver is e1000 in the 2.6.9 kernel
tree. System is a Xeon based system at 3 Ghz single processor with 4
GB of ram and a 3GB/1GB kernel/user
split address space.
Jeff
next reply other threads:[~2004-11-09 17:13 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-11-09 17:35 Jeff V. Merkey [this message]
2004-11-09 18:14 ` 2.6.9 RCU breakage in dev_queue_xmit Patrick McHardy
2004-11-09 18:40 ` Jeff V. Merkey
2004-11-09 18:37 ` Stephen Hemminger
2004-11-09 23:38 ` Jeff V. Merkey
2004-11-10 1:48 ` Herbert Xu
2004-11-10 17:21 ` Jeff V. Merkey
2004-11-10 23:56 ` Jeff V. Merkey
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