* repeatable rmmod/ksofitirqd hang with rtl8187
@ 2008-02-01 15:11 David Mansfield
2008-02-01 15:49 ` John W. Linville
0 siblings, 1 reply; 2+ messages in thread
From: David Mansfield @ 2008-02-01 15:11 UTC (permalink / raw)
To: linux-wireless
Hi,
I'm trying to use the rtl8187 in the Fedora 8 kernel 2.6.23.14-107.fc8
on x86_64 and I'm having a number of problems with reliability.
However, the most obvious problem is that the module cannot be removed.
Attempting to rmmod the rtl8187 causes rmmod and ksoftirqd to go to 100%
every time.
The nvidia driver is loaded, but I can reproduce without it, and will do
so and repost logs if necessary (easily). Also, I could switch to
another kernel version (non-Fedora) if necessary (harder).
The last message relevant to the removal in the log is:
usbcore: deregistering interface driver rtl8187
I have a sysrq-Tasks dump also, and I'll try to paste the 'relevant'
portions, but if you want something else, let me know:
Jan 30 07:22:08 localhost kernel: rtl8187 S 0000000000000000 0 3080 2
Jan 30 07:22:08 localhost kernel: ffff8100582d3ee0 0000000000000046 0000000000000000 ffffffff8101bdf7
Jan 30 07:22:08 localhost kernel: ffff8100622f8820 ffffffff81370660 ffff8100622f8a98 ffffffff81370660
Jan 30 07:22:08 localhost kernel: ffffffffffffffff ffff81006add7000 0000000000000000 0000000000000000
Jan 30 07:22:08 localhost kernel: Call Trace:
Jan 30 07:22:08 localhost kernel: [<ffffffff8101bdf7>] lapic_next_event+0x0/0xa
Jan 30 07:22:08 localhost kernel: [<ffffffff810465f9>] worker_thread+0x0/0xe4
Jan 30 07:22:08 localhost kernel: [<ffffffff8104669a>] worker_thread+0xa1/0xe4
Jan 30 07:22:08 localhost kernel: [<ffffffff810493f5>] autoremove_wake_function+0x0/0x2e
Jan 30 07:22:08 localhost kernel: [<ffffffff810492a0>] kthread+0x47/0x73
Jan 30 07:22:08 localhost kernel: [<ffffffff8100c9e8>] child_rip+0xa/0x12
Jan 30 07:22:08 localhost kernel: [<ffffffff810f26fa>] dummy_d_instantiate+0x0/0x1
Jan 30 07:22:08 localhost kernel: [<ffffffff81049259>] kthread+0x0/0x73
Jan 30 07:22:08 localhost kernel: [<ffffffff8100c9de>] child_rip+0x0/0x12
Jan 30 07:22:08 localhost kernel: rmmod R running task 0 5444 5331
(yes, there is NO call stack listed for rmmod...)
Jan 30 07:22:08 localhost kernel: cpu#0, 2800.262 MHz
Jan 30 07:22:08 localhost kernel: .nr_running : 1
Jan 30 07:22:08 localhost kernel: .load : 3121
Jan 30 07:22:08 localhost kernel: .ls.delta_fair : 2409554145852
Jan 30 07:22:08 localhost kernel: .ls.delta_exec : 1870680954585
Jan 30 07:22:08 localhost kernel: .nr_switches : 5248144
Jan 30 07:22:08 localhost kernel: .nr_load_updates : 1871123
Jan 30 07:22:08 localhost kernel: .nr_uninterruptible : 4593
Jan 30 07:22:08 localhost kernel: .jiffies : 4321958165
Jan 30 07:22:08 localhost kernel: .next_balance : 4321958387
Jan 30 07:22:08 localhost kernel: .curr->pid : 4
Jan 30 07:22:08 localhost kernel: .clock : 1870843827954
Jan 30 07:22:08 localhost kernel: .idle_clock : 0
Jan 30 07:22:08 localhost kernel: .prev_clock_raw : 10156683955881
Jan 30 07:22:08 localhost kernel: .clock_warps : 0
Jan 30 07:22:08 localhost kernel: .clock_overflows : 5843715
Jan 30 07:22:08 localhost kernel: .clock_deep_idle_events : 0
Jan 30 07:22:08 localhost kernel: .clock_max_delta : 999848
Jan 30 07:22:08 localhost kernel: .cpu_load[0] : 3121
Jan 30 07:22:08 localhost kernel: .cpu_load[1] : 3121
Jan 30 07:22:08 localhost kernel: .cpu_load[2] : 3121
Jan 30 07:22:08 localhost kernel: .cpu_load[3] : 3121
Jan 30 07:22:08 localhost kernel: .cpu_load[4] : 3121
Jan 30 07:22:08 localhost kernel: cfs_rq
Jan 30 07:22:08 localhost kernel: .fair_clock : 730253466918
Jan 30 07:22:08 localhost kernel: .exec_clock : 449856607964
Jan 30 07:22:08 localhost kernel: .wait_runtime : -39097530
Jan 30 07:22:08 localhost kernel: .wait_runtime_overruns : 667096
Jan 30 07:22:08 localhost kernel: .wait_runtime_underruns : 116653
Jan 30 07:22:08 localhost kernel: .sleeper_bonus : 3819331
Jan 30 07:22:08 localhost kernel: .wait_runtime_rq_sum : -39097530
Jan 30 07:22:08 localhost kernel:
Jan 30 07:22:08 localhost kernel: runnable tasks:
Jan 30 07:22:08 localhost kernel: task PID tree-key delta waiting switches prio sum-exec sum-wait sum-sleep wait-overrun wait-underrun
Jan 30 07:22:08 localhost kernel: ------------------------------------------------------------------------------------------------------------------------------------------------------------------
Jan 30 07:22:08 localhost kernel: R ksoftirqd/0 4 730266294816 12827898 -39097530 113821 115 94706931241 493479775956 1771180094381 81609 858
Jan 30 07:22:08 localhost kernel:
Jan 30 07:22:08 localhost kernel: cpu#1, 2800.262 MHz
Jan 30 07:22:08 localhost kernel: .nr_running : 2
Jan 30 07:22:08 localhost kernel: .load : 2048
Jan 30 07:22:08 localhost kernel: .ls.delta_fair : 2449895038018
Jan 30 07:22:08 localhost kernel: .ls.delta_exec : 1815567039057
Jan 30 07:22:08 localhost kernel: .nr_switches : 8682134
Jan 30 07:22:08 localhost kernel: .nr_load_updates : 1815833
Jan 30 07:22:08 localhost kernel: .nr_uninterruptible : -4593
Jan 30 07:22:08 localhost kernel: .jiffies : 4321958165
Jan 30 07:22:08 localhost kernel: .next_balance : 4321958156
Jan 30 07:22:08 localhost kernel: .curr->pid : 5444
Jan 30 07:22:08 localhost kernel: .clock : 1815564248632
Jan 30 07:22:08 localhost kernel: .idle_clock : 0
Jan 30 07:22:08 localhost kernel: .prev_clock_raw : 10156680908921
Jan 30 07:22:08 localhost kernel: .clock_warps : 0
Jan 30 07:22:08 localhost kernel: .clock_overflows : 7745757
Jan 30 07:22:08 localhost kernel: .clock_deep_idle_events : 0
Jan 30 07:22:08 localhost kernel: .clock_max_delta : 999845
Jan 30 07:22:08 localhost kernel: .cpu_load[0] : 2048
Jan 30 07:22:08 localhost kernel: .cpu_load[1] : 1536
Jan 30 07:22:08 localhost kernel: .cpu_load[2] : 1280
Jan 30 07:22:08 localhost kernel: .cpu_load[3] : 1152
Jan 30 07:22:08 localhost kernel: .cpu_load[4] : 1088
Jan 30 07:22:08 localhost kernel:
Jan 30 07:22:08 localhost kernel: cfs_rq
Jan 30 07:22:08 localhost kernel: .fair_clock : 1076180297717
Jan 30 07:22:08 localhost kernel: .exec_clock : 718056819036
Jan 30 07:22:08 localhost kernel: .wait_runtime : 0
Jan 30 07:22:08 localhost kernel: .wait_runtime_overruns : 681220
Jan 30 07:22:08 localhost kernel: .wait_runtime_underruns : 8611457
Jan 30 07:22:08 localhost kernel: .sleeper_bonus : 3936098
Jan 30 07:22:08 localhost kernel: .wait_runtime_rq_sum : 0
Jan 30 07:22:08 localhost kernel:
Jan 30 07:22:08 localhost kernel: runnable tasks:
Jan 30 07:22:08 localhost kernel: task PID tree-key delta waiting switches prio sum-exec sum-wait sum-sleep wait-overrun wait-underrun
Jan 30 07:22:08 localhost kernel: ------------------------------------------------------------------------------------------------------------------------------------------------------------------
Jan 30 07:22:08 localhost kernel: rklogd 2140 1076140201263 -40096454 40000000 306 120 16714625 1164181473 1800696827984 34 0
Jan 30 07:22:08 localhost kernel: R rmmod 5444 1076220297717 40000000 -40000000 6021 120 84558667512 -1817731300 37707 0 8536283
Jan 30 07:22:08 localhost kernel:
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: repeatable rmmod/ksofitirqd hang with rtl8187
2008-02-01 15:11 repeatable rmmod/ksofitirqd hang with rtl8187 David Mansfield
@ 2008-02-01 15:49 ` John W. Linville
0 siblings, 0 replies; 2+ messages in thread
From: John W. Linville @ 2008-02-01 15:49 UTC (permalink / raw)
To: David Mansfield; +Cc: linux-wireless
On Fri, Feb 01, 2008 at 10:11:25AM -0500, David Mansfield wrote:
> Hi,
>
> I'm trying to use the rtl8187 in the Fedora 8 kernel 2.6.23.14-107.fc8
> on x86_64 and I'm having a number of problems with reliability.
> However, the most obvious problem is that the module cannot be removed.
>
> Attempting to rmmod the rtl8187 causes rmmod and ksoftirqd to go to 100%
> every time.
I don't see anything in the posted information which clearly
suggests an rtl8187 problem or even a mac80211 one. Would you mind
opening a bugat bugzilla.redhat.com for this issue? Please add
"linville@redhat.com" to the CC: field when you open it.
Thanks!
John
--
John W. Linville
linville@tuxdriver.com
^ permalink raw reply [flat|nested] 2+ messages in thread
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