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Fixed

LIN5-18818 : [wrLinux501 Async BSP altera-socfpga] There are call trace on eth0 when booting cyclone target with PCIe enabled on preempt-rt kernel

Created: May 28, 2014    Updated: Dec 19, 2017
Resolved Date: May 31, 2014
Found In Version: 5.0.1
Fix Version: 5.0.1.16
Severity: Severe
Applicable for: Wind River Linux 5
Component/s: BSP - Async

Description

1. There are call trace on eth0 when booting cyclone target with PCIe enabled on preempt-rt kernel as follow:

------------[ cut here ]------------
WARNING: at /altera-socfpga-rt-git/bitbake_build/tmp/work/altera_socfpga-wrs-linux-gnueabi/linux-windriver-3.4-r0/linux/net/sched/sch_generic.c:256 )
NETDEV WATCHDOG: eth0 (igb): transmit queue 0 timed out
Modules linked in: fat vfat minix nls_cp437 nls_iso8859_1
[<800181ac>] (unwind_backtrace+0x0/0x104) from [<80687aa8>] (dump_stack+0x20/0x24)
[<80687aa8>] (dump_stack+0x20/0x24) from [<80025920>] (warn_slowpath_common+0x64/0x74)
[<80025920>] (warn_slowpath_common+0x64/0x74) from [<800259ec>] (warn_slowpath_fmt+0x40/0x48)
[<800259ec>] (warn_slowpath_fmt+0x40/0x48) from [<8058ba24>] (dev_watchdog+0x3e8/0x3f8)
[<8058ba24>] (dev_watchdog+0x3e8/0x3f8) from [<80037bb8>] (run_timer_softirq+0x1a8/0x464)
[<80037bb8>] (run_timer_softirq+0x1a8/0x464) from [<8002d7c0>] (do_current_softirqs+0x22c/0x470)
[<8002d7c0>] (do_current_softirqs+0x22c/0x470) from [<8002daec>] (run_ksoftirqd+0xe8/0x1b0)
[<8002daec>] (run_ksoftirqd+0xe8/0x1b0) from [<8004c4b0>] (kthread+0x98/0x9c)
[<8004c4b0>] (kthread+0x98/0x9c) from [<8000faec>] (kernel_thread_exit+0x0/0x8)
---[ end trace 0000000000000002 ]---
igb 0000:01:00.0: eth0: Reset adapter

2. The adapter is reset when executing command "ifconfig"

root@localhost:~# ifconfig
igb 0000:01:00.0: eth0: Reset adapter
nfs: server 128.224.162.227 not responding, still trying
igb: eth0 NIC Link is Up 100 Mbps Full Duplex, Flow Control: RX/TX
nfs: server 128.224.162.227 OK
eth0      Link encap:Ethernet  HWaddr a0:36:9f:1d:d0:4a  
          inet addr:128.224.162.249  Bcast:128.224.163.255  Mask:255.255.254.0
          inet6 addr: fe80::a236:9fff:fe1d:d04a/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:20962 errors:0 dropped:257 overruns:0 frame:0
          TX packets:10864 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:14926086 (14.2 MiB)  TX bytes:1696150 (1.6 MiB)
          Memory:c0000000-c0100000 

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:41 errors:0 dropped:0 overruns:0 frame:0
          TX packets:41 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:6934 (6.7 KiB)  TX bytes:6934 (6.7 KiB)

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