linux-kernel - Re: [linus:master] [rds] c50d295c37: BUG:unable_to_handle_page_fault_for

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Message-ID: <20250604110438.rer2bMSx@linutronix.de>
Date: Wed, 4 Jun 2025 13:04:38 +0200
From: Sebastian Andrzej Siewior <bigeasy@...utronix.de>
To: kernel test robot <oliver.sang@...el.com>
Cc: oe-lkp@...ts.linux.dev, lkp@...el.com, linux-kernel@...r.kernel.org,
	Paolo Abeni <pabeni@...hat.com>,
	Allison Henderson <allison.henderson@...cle.com>,
	netdev@...r.kernel.org, linux-rdma@...r.kernel.org,
	rds-devel@....oracle.com
Subject: Re: [linus:master] [rds]  c50d295c37:
 BUG:unable_to_handle_page_fault_for_address

On 2025-06-04 16:42:37 [+0800], kernel test robot wrote:
> 
> Hello,
Hi,

> kernel test robot noticed "BUG:unable_to_handle_page_fault_for_address" on:
> 
> commit: c50d295c37f2648a8d9e8a572fedaad027d134bb ("rds: Use nested-BH locking for rds_page_remainder")
> https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master
…
> the issue does not always happen, 45 times out of 200 runs as below. but parent
> keeps clean.

I can reproduce this quite reliably. Looking…

Sebastian