Re: [PATCH v5 6/9] slub: Delay freezing of partial slabs

[Vlastimil Babka]

On 11/20/23 19:49, Mark Brown wrote:
> On Thu, Nov 02, 2023 at 03:23:27AM +0000, chengming.zhou@xxxxxxxxx wrote:
>> From: Chengming Zhou <zhouchengming@xxxxxxxxxxxxx>
>> 
>> Now we will freeze slabs when moving them out of node partial list to
>> cpu partial list, this method needs two cmpxchg_double operations:
>> 
>> 1. freeze slab (acquire_slab()) under the node list_lock
>> 2. get_freelist() when pick used in ___slab_alloc()
> 
> Recently -next has been failing to boot on a Raspberry Pi 3 with an arm
> multi_v7_defconfig and a NFS rootfs, a bisect appears to point to this
> patch (in -next as c8d312e039030edab25836a326bcaeb2a3d4db14) as having
> introduced the issue.  I've included the full bisect log below.
> 
> When we see problems we see RCU stalls while logging in, for example:

Can you try this, please?

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