linux-kernel - Re: BUG: WARNING in kvfree_rcu

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Message-ID: <ZtieQFsSiALVVGld@pc636>
Date: Wed, 4 Sep 2024 19:52:00 +0200
From: Uladzislau Rezki <urezki@...il.com>
To: Xingyu Li <xli399@....edu>
Cc: Uladzislau Rezki <urezki@...il.com>, paulmck@...nel.org,
	frederic@...nel.org, neeraj.upadhyay@...nel.org,
	joel@...lfernandes.org, josh@...htriplett.org, boqun.feng@...il.com,
	rostedt@...dmis.org, mathieu.desnoyers@...icios.com,
	jiangshanlai@...il.com, qiang.zhang1211@...il.com,
	rcu@...r.kernel.org, linux-kernel@...r.kernel.org,
	Yu Hao <yhao016@....edu>
Subject: Re: BUG: WARNING in kvfree_rcu_bulk

Hello!

>
> Here is the config file:
> https://gist.github.com/TomAPU/64f5db0fe976a3e94a6dd2b621887cdd
> 
Thank you. I was not able to boot my box using your config file. But i
enabled all needed configs in to run your reproduce so it does not
complain on below warnings:

<snip>
urezki@...38:~$ sudo ./a.out
the reproducer may not work as expected: USB injection setup failed: failed to chmod /dev/raw-gadget
the reproducer may not work as expected: 802154 injection setup failed: netlink_query_family_id failed
<snip>

sudo modprobe raw_gadget 
sudo modprobe ieee802154
sudo modprobe ieee802154_socket 
sudo modprobe hci
sudo modprobe hci_vhci 
sudo modprobe mac802154
sudo modprobe ieee802154
sudo modprobe ieee802154_socket
sudo modprobe mac802154_hwsim
sudo modprobe adf7242
sudo modprobe atusb
sudo modprobe at86rf230
sudo modprobe fakelb
sudo modprobe mrf24j40
sudo modprobe cc2520

and even after that i am not able to get any "WARNING in kvfree_rcu_bulk".

urezki@...38:~$ uname -a
Linux pc638 6.11.0-rc2+ #3827 SMP PREEMPT_DYNAMIC Wed Sep  4 19:37:22 CEST 2024 x86_64 GNU/Linux
urezki@...38:~$

is it easy to reproduce? Am i missing something in my setup?

--
Uladzislau Rezki