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Re: [hrtimer] 336a9cde10 WARNING: CPU: 1 PID: 1 at kernel/time/hrtimer.c:1090 hrtimer_init

Started byThomas Gleixner <tglx@linutronix.de>
First post2017-02-21 03:10 +0100
Last post2017-02-21 03:30 +0100
Articles 4 — 3 participants

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  Re: [hrtimer] 336a9cde10 WARNING: CPU: 1 PID: 1 at kernel/time/hrtimer.c:1090  hrtimer_init Thomas Gleixner <tglx@linutronix.de> - 2017-02-21 03:10 +0100
    Re: [hrtimer] 336a9cde10 WARNING: CPU: 1 PID: 1 at  kernel/time/hrtimer.c:1090 hrtimer_init Ye Xiaolong <xiaolong.ye@intel.com> - 2017-02-21 03:30 +0100
      Re: [LKP] [hrtimer] 336a9cde10 WARNING: CPU: 1 PID: 1 at  kernel/time/hrtimer.c:1090 hrtimer_init Ye Xiaolong <xiaolong.ye@intel.com> - 2017-02-21 06:40 +0100
    Re: [hrtimer] 336a9cde10 WARNING: CPU: 1 PID: 1 at  kernel/time/hrtimer.c:1090 hrtimer_init Fengguang Wu <fengguang.wu@intel.com> - 2017-02-21 03:30 +0100

#1584993 — Re: [hrtimer] 336a9cde10 WARNING: CPU: 1 PID: 1 at kernel/time/hrtimer.c:1090 hrtimer_init

FromThomas Gleixner <tglx@linutronix.de>
Date2017-02-21 03:10 +0100
SubjectRe: [hrtimer] 336a9cde10 WARNING: CPU: 1 PID: 1 at kernel/time/hrtimer.c:1090 hrtimer_init
Message-ID<td83T-4q0-1@gated-at.bofh.it>
On Tue, 21 Feb 2017, Fengguang Wu wrote:

> Hi Marc,
> 
> FYI here is another bisect result. The attached reproduce-* script can
> be used to reproduce the bug.

Again. This is a problem in the calling code The WARN_ON merily shows the
wreckage in the caller. Marc sent you a patch already...

> [   11.409712]  hrtimer_init+0x11f/0x199
> [   11.410666]  ? mac80211_hwsim_get_tsf+0x1d/0x1d
> [   11.411766]  tasklet_hrtimer_init+0x1b/0x4f
> [   11.412802]  mac80211_hwsim_new_radio+0x7fe/0x916
> [   11.413935]  ? set_debug_rodata+0x12/0x12
> [   11.414904]  init_mac80211_hwsim+0x138/0x29f
> [   11.415822]  ? rndis_wlan_driver_init+0x1b/0x1b
> [   11.416775]  do_one_initcall+0x90/0x142
> [   11.417632]  ? set_debug_rodata+0x12/0x12
> [   11.418511]  kernel_init_freeable+0x1cb/0x258
> [   11.419433]  ? rest_init+0x13b/0x13b
> [   11.420233]  kernel_init+0xe/0xf5
> [   11.421006]  ret_from_fork+0x2a/0x40
> [   11.421838] ---[ end trace 9c23eceab0d16aa5 ]---
> [   11.423540] ieee80211 phy1: Selected rate control algorithm 'minstrel_ht'

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#1584995 — Re: [hrtimer] 336a9cde10 WARNING: CPU: 1 PID: 1 at kernel/time/hrtimer.c:1090 hrtimer_init

FromYe Xiaolong <xiaolong.ye@intel.com>
Date2017-02-21 03:30 +0100
SubjectRe: [hrtimer] 336a9cde10 WARNING: CPU: 1 PID: 1 at kernel/time/hrtimer.c:1090 hrtimer_init
Message-ID<td8nf-4xt-1@gated-at.bofh.it>
In reply to#1584993
Hi, fengguang
On 02/20, Thomas Gleixner wrote:
>On Tue, 21 Feb 2017, Fengguang Wu wrote:
>
>> Hi Marc,
>> 
>> FYI here is another bisect result. The attached reproduce-* script can
>> be used to reproduce the bug.
>
>Again. This is a problem in the calling code The WARN_ON merily shows the
>wreckage in the caller. Marc sent you a patch already...

I'm verifying the fix patch.

Thanks,
Xiaolong
>
>> [   11.409712]  hrtimer_init+0x11f/0x199
>> [   11.410666]  ? mac80211_hwsim_get_tsf+0x1d/0x1d
>> [   11.411766]  tasklet_hrtimer_init+0x1b/0x4f
>> [   11.412802]  mac80211_hwsim_new_radio+0x7fe/0x916
>> [   11.413935]  ? set_debug_rodata+0x12/0x12
>> [   11.414904]  init_mac80211_hwsim+0x138/0x29f
>> [   11.415822]  ? rndis_wlan_driver_init+0x1b/0x1b
>> [   11.416775]  do_one_initcall+0x90/0x142
>> [   11.417632]  ? set_debug_rodata+0x12/0x12
>> [   11.418511]  kernel_init_freeable+0x1cb/0x258
>> [   11.419433]  ? rest_init+0x13b/0x13b
>> [   11.420233]  kernel_init+0xe/0xf5
>> [   11.421006]  ret_from_fork+0x2a/0x40
>> [   11.421838] ---[ end trace 9c23eceab0d16aa5 ]---
>> [   11.423540] ieee80211 phy1: Selected rate control algorithm 'minstrel_ht'

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#1585053 — Re: [LKP] [hrtimer] 336a9cde10 WARNING: CPU: 1 PID: 1 at kernel/time/hrtimer.c:1090 hrtimer_init

FromYe Xiaolong <xiaolong.ye@intel.com>
Date2017-02-21 06:40 +0100
SubjectRe: [LKP] [hrtimer] 336a9cde10 WARNING: CPU: 1 PID: 1 at kernel/time/hrtimer.c:1090 hrtimer_init
Message-ID<tdbl7-6xF-7@gated-at.bofh.it>
In reply to#1584995
On 02/21, Ye Xiaolong wrote:
>Hi, fengguang
>On 02/20, Thomas Gleixner wrote:
>>On Tue, 21 Feb 2017, Fengguang Wu wrote:
>>
>>> Hi Marc,
>>> 
>>> FYI here is another bisect result. The attached reproduce-* script can
>>> be used to reproduce the bug.
>>
>>Again. This is a problem in the calling code The WARN_ON merily shows the
>>wreckage in the caller. Marc sent you a patch already...
>
>I'm verifying the fix patch.

Marc's workaround patch fixed this warning.

Tested-by: Xiaolong Ye <xiaolong.ye@intel.com>

Thanks,
Xiaolong
>
>Thanks,
>Xiaolong
>>
>>> [   11.409712]  hrtimer_init+0x11f/0x199
>>> [   11.410666]  ? mac80211_hwsim_get_tsf+0x1d/0x1d
>>> [   11.411766]  tasklet_hrtimer_init+0x1b/0x4f
>>> [   11.412802]  mac80211_hwsim_new_radio+0x7fe/0x916
>>> [   11.413935]  ? set_debug_rodata+0x12/0x12
>>> [   11.414904]  init_mac80211_hwsim+0x138/0x29f
>>> [   11.415822]  ? rndis_wlan_driver_init+0x1b/0x1b
>>> [   11.416775]  do_one_initcall+0x90/0x142
>>> [   11.417632]  ? set_debug_rodata+0x12/0x12
>>> [   11.418511]  kernel_init_freeable+0x1cb/0x258
>>> [   11.419433]  ? rest_init+0x13b/0x13b
>>> [   11.420233]  kernel_init+0xe/0xf5
>>> [   11.421006]  ret_from_fork+0x2a/0x40
>>> [   11.421838] ---[ end trace 9c23eceab0d16aa5 ]---
>>> [   11.423540] ieee80211 phy1: Selected rate control algorithm 'minstrel_ht'
>_______________________________________________
>LKP mailing list
>LKP@lists.01.org
>https://lists.01.org/mailman/listinfo/lkp

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#1584996 — Re: [hrtimer] 336a9cde10 WARNING: CPU: 1 PID: 1 at kernel/time/hrtimer.c:1090 hrtimer_init

FromFengguang Wu <fengguang.wu@intel.com>
Date2017-02-21 03:30 +0100
SubjectRe: [hrtimer] 336a9cde10 WARNING: CPU: 1 PID: 1 at kernel/time/hrtimer.c:1090 hrtimer_init
Message-ID<td8nf-4xt-15@gated-at.bofh.it>
In reply to#1584993
On Mon, Feb 20, 2017 at 06:07:57PM -0800, Thomas Gleixner wrote:
>On Tue, 21 Feb 2017, Fengguang Wu wrote:
>
>> Hi Marc,
>>
>> FYI here is another bisect result. The attached reproduce-* script can
>> be used to reproduce the bug.
>
>Again. This is a problem in the calling code The WARN_ON merily shows the
>wreckage in the caller. Marc sent you a patch already...

Ah OK -- sorry I'm lost in the lots of bugs..

>> [   11.409712]  hrtimer_init+0x11f/0x199
>> [   11.410666]  ? mac80211_hwsim_get_tsf+0x1d/0x1d
>> [   11.411766]  tasklet_hrtimer_init+0x1b/0x4f
>> [   11.412802]  mac80211_hwsim_new_radio+0x7fe/0x916
>> [   11.413935]  ? set_debug_rodata+0x12/0x12
>> [   11.414904]  init_mac80211_hwsim+0x138/0x29f
>> [   11.415822]  ? rndis_wlan_driver_init+0x1b/0x1b
>> [   11.416775]  do_one_initcall+0x90/0x142
>> [   11.417632]  ? set_debug_rodata+0x12/0x12
>> [   11.418511]  kernel_init_freeable+0x1cb/0x258
>> [   11.419433]  ? rest_init+0x13b/0x13b
>> [   11.420233]  kernel_init+0xe/0xf5
>> [   11.421006]  ret_from_fork+0x2a/0x40
>> [   11.421838] ---[ end trace 9c23eceab0d16aa5 ]---
>> [   11.423540] ieee80211 phy1: Selected rate control algorithm 'minstrel_ht'

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