Hi,
I got a lot of warnings about del_timer_sync called in interrupt like following:
[237232.529021] ------------[ cut here ]------------
[237232.529111] WARNING: at kernel/timer.c:1012 del_timer_sync+0xae/0xc6()
[237232.529198] Hardware name: OptiPlex 780
[237232.529286] Modules linked in: tun snd_pcm_oss snd_mixer_oss
kvm_intel kvm snd_hda_codec_analog dell_wmi sparse_keymap
snd_hda_intel snd_hda_codec snd_hwdep wmi 8139too snd_pcm snd_timer
snd_page_alloc e1000e
[237232.529557] Pid: 0, comm: kworker/0:0 Tainted: G W
2.6.38-04148-g054cfaa #149
[237232.529712] Call Trace:
[237232.529790] <IRQ> [<ffffffff810487ea>] ? del_timer_sync+0xae/0xc6
[237232.529876] [<ffffffff8103b478>] ? warn_slowpath_common+0x80/0x99
[237232.529958] [<ffffffff8103b4a6>] ? warn_slowpath_null+0x15/0x17
[237232.530039] [<ffffffff810487ea>] ? del_timer_sync+0xae/0xc6
[237232.530120] [<ffffffff8104873c>] ? del_timer_sync+0x0/0xc6
[237232.530201] [<ffffffff814bcf84>] ? linkwatch_schedule_work+0x81/0x9f
[237232.530283] [<ffffffff814bd06f>] ? linkwatch_fire_event+0xcd/0xd2
[237232.530364] [<ffffffff814c6ca1>] ? netif_carrier_on+0x2a/0x3e
[237232.530446] [<ffffffff81368f33>] ? mii_check_media+0x80/0x1a8
[237232.530530] [<ffffffffa006a175>] ? rtl8139_interrupt+0x234/0x511 [8139too]
[237232.530612] [<ffffffff81066b81>] ? trace_hardirqs_off+0xd/0xf
[237232.530694] [<ffffffff81099b5f>] ? handle_irq_event_percpu+0x5f/0x1ad
[237232.530775] [<ffffffff81099d14>] ? handle_irq_event+0x47/0x68
[237232.530856] [<ffffffff8109c02b>] ? handle_fasteoi_irq+0x82/0xab
[237232.530939] [<ffffffff81003b00>] ? handle_irq+0x86/0x8e
[237232.531019] [<ffffffff81003494>] ? do_IRQ+0x4b/0xb2
[237232.531100] [<ffffffff8157c3d3>] ? ret_from_intr+0x0/0x1a
[237232.531180] <EOI> [<ffffffff810087c6>] ? mwait_idle+0xa4/0xeb
[237232.531264] [<ffffffff810087cf>] ? mwait_idle+0xad/0xeb
[237232.531345] [<ffffffff810087c6>] ? mwait_idle+0xa4/0xeb
[237232.531426] [<ffffffff81001e67>] ? cpu_idle+0x64/0x9a
[237232.531507] [<ffffffff81575ae0>] ? start_secondary+0x1f2/0x1f4
[237232.531587] ---[ end trace c18fe5c80f501bd9 ]---
The actual call path is:
linkwatch_schedule_work
-->cancel_delayed_work
-->del_timer_sync
A real bug?
--
Regards
dave