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SubjectRe: [ANNOUNCE] v4.11.12-rt9
On 2017-08-05 08:13:03 [+0200], Mike Galbraith wrote:
>
> Steven's script annoyed the scheduler here, but woohoo regardless, it
> hasn't yet made boom, or stopped dead in its tracks.  I'll give it some
> exercise on my 64 core box, where death has never (modulo fugly hacks
> that survived 30 hrs of hell.. once) been more than minutes away.
>
> [ 190.589248] ------------[ cut here ]------------
> [ 190.589273] WARNING: CPU: 1 PID: 5679 at kernel/sched/core.c:6346 __might_sleep+0x80/0x90
> [ 190.589277] do not call blocking ops when !TASK_RUNNING; state=2 set at [<ffffffff810d2c45>] __finish_swait+0x5/0x60
> [ 190.589340] CPU: 1 PID: 5679 Comm: stress-cpu-hotp Tainted: G E 4.11.12-rt9-virgin #11
> [ 190.589341] Hardware name: MEDION MS-7848/MS-7848, BIOS M7848W08.20C 09/23/2013
> [ 190.589341] Call Trace:
> [ 190.589355] __might_sleep+0x80/0x90
> [ 190.589358] rt_mutex_lock_state+0x25/0x60
> [ 190.589361] rt_mutex_lock+0x13/0x20
> [ 190.589362] _mutex_lock+0x39/0x40
> [ 190.589365] stop_cpus+0x23/0x50
> [ 190.589367] stop_machine_cpuslocked+0xed/0x130
> [ 190.589370] takedown_cpu+0x80/0x110
> [ 190.589372] cpuhp_invoke_callback+0x248/0x9d0
> [ 190.589376] cpuhp_down_callbacks+0x42/0x80
> [ 190.589378] _cpu_down+0xc5/0x100
> [ 190.589380] do_cpu_down+0x3c/0x60
> [ 190.589381] cpu_down+0x10/0x20
> [ 190.589384] cpu_subsys_offline+0x14/0x20
> [ 190.589385] device_offline+0x8a/0xb0
> [ 190.589387] online_store+0x40/0x80
> [ 190.589389] dev_attr_store+0x18/0x30
> [ 190.589391] sysfs_kf_write+0x44/0x60
> [ 190.589392] kernfs_fop_write+0x13c/0x1d0
> [ 190.589395] __vfs_write+0x28/0x140

can you reproduce that one? I don't see where this TASK_UNINTERRUPTIBLE
is coming from.

Sebastian

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