Messages in this thread | | | From | "Schenk, Gavin" <> | Subject | Re: [Customers.Eckelmann] [PATCH] locking/rwsem: Fix up_read_non_owner() warning with DEBUG_RWSEMS | Date | Wed, 20 Jun 2018 05:49:30 +0000 |
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Hi,
On Wed, 2018-06-20 at 07:09 +0800, Waiman Long wrote: > On 05/24/2018 09:26 PM, Waiman Long wrote: > > It was found that the use of up_read_non_owner() in NFS was causing > > the following warning when DEBUG_RWSEMS was configured. > > > > DEBUG_LOCKS_WARN_ON(sem->owner != ((struct task_struct *)(1UL << 0))) > > > > Looking into the rwsem.c file, it was discovered that the corresponding > > down_read_non_owner() function was not setting the owner field properly. > > This is fixed now, and the warning should be gone. > > > > Signed-off-by: Waiman Long <longman@redhat.com> Tested-by: Gavin Schenk <g.schenk@eckelmann.de>
This fixes my reproducible locking splat when booting with nfsroot and changing password. Thank you!
Regards Gavin Schenk
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