linux-kernel - Re: BUG: general protection fault in put

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Message-ID: <20240827142749.ibj4fjdp6n7wvz2p@joelS2.panther.com>
Date: Tue, 27 Aug 2024 16:27:49 +0200
From: Joel Granados <j.granados@...sung.com>
To: Xingyu Li <xli399@....edu>
CC: <mcgrof@...nel.org>, <kees@...nel.org>, <linux-kernel@...r.kernel.org>,
	<linux-fsdevel@...r.kernel.org>
Subject: Re: BUG: general protection fault in put_links

On Sat, Aug 24, 2024 at 10:04:54PM -0700, Xingyu Li wrote:
> Hi,
> 
> We found a bug in Linux 6.10. It is probably a null pointer reference bug.
> The reason is probably that before line 123 of
> fs/proc/proc_sysctl.c(entry = &head->ctl_table[ctl_node -
> head->node];), there is no null pointer check for `head`.
> The bug report is as follow:

Thx for the report. How did you trigger it. Do you have code that
triggers it?

Best

-- 

Joel Granados