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Groups > linux.kernel > #1482591
| From | Oleg Nesterov <oleg@redhat.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: BUG_ON in rcu_sync_func triggered |
| Date | 2016-09-13 17:30 +0200 |
| Message-ID | <sgXOO-3H6-33@gated-at.bofh.it> (permalink) |
| References | (2 earlier) <sgRgm-7LF-7@gated-at.bofh.it> <sgVN0-2qI-29@gated-at.bofh.it> <sgWg1-2C0-9@gated-at.bofh.it> <sgX2p-39g-11@gated-at.bofh.it> <sgX2p-39g-9@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On 09/13, Nikolay Borisov wrote: > > On 09/13/2016 05:35 PM, Nikolay Borisov wrote: > > > > On 09/13/2016 04:43 PM, Oleg Nesterov wrote: > >> On 09/13, Oleg Nesterov wrote: > >>> > >>> OK... perhaps the unbalanced up_write... I'll try to look at freeze/thaw code, > >> > >> Heh, yes, it looks racy or I am totally confused. > >> > >>> could test the debugging patch below meanwhile? > >> > >> Yes please. I'll send you another patch (hopefully fix) later, but it > >> would be nice if you can test this patch to get more info. > > > > I've already started testing with this patch on 4.4.20 this time I think it would be better to stay with the same kernel version to debug the problem... > Actually forget that, here is a warning that this triggered: > > [ 844.290454] WARNING: CPU: 2 PID: 1900 at kernel/rcu/sync.c:160 rcu_sync_func+0xc8/0x150() > ... > [ 844.754708] XXX: ffff88047527da78 gp=2 cnt=0 cb=1 Hmm. Thanks. Please show us all the warnings you get. Oleg.
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Re: BUG_ON in rcu_sync_func triggered Oleg Nesterov <oleg@redhat.com> - 2016-09-12 15:10 +0200
Re: BUG_ON in rcu_sync_func triggered Nikolay Borisov <kernel@kyup.com> - 2016-09-13 10:30 +0200
Re: BUG_ON in rcu_sync_func triggered Oleg Nesterov <oleg@redhat.com> - 2016-09-13 15:20 +0200
Re: BUG_ON in rcu_sync_func triggered Oleg Nesterov <oleg@redhat.com> - 2016-09-13 15:50 +0200
Re: BUG_ON in rcu_sync_func triggered Nikolay Borisov <kernel@kyup.com> - 2016-09-13 16:40 +0200
Re: BUG_ON in rcu_sync_func triggered Oleg Nesterov <oleg@redhat.com> - 2016-09-13 17:30 +0200
Re: BUG_ON in rcu_sync_func triggered Nikolay Borisov <kernel@kyup.com> - 2016-09-14 08:40 +0200
Re: BUG_ON in rcu_sync_func triggered Oleg Nesterov <oleg@redhat.com> - 2016-09-14 15:00 +0200
Re: BUG_ON in rcu_sync_func triggered Nikolay Borisov <n.borisov@siteground.com> - 2016-09-13 17:40 +0200
Re: BUG_ON in rcu_sync_func triggered Nikolay Borisov <kernel@kyup.com> - 2016-09-13 16:40 +0200
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