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Tue, 5 Mar 2024 18:30:48 +0000 (UTC) Received: from dovecot-director2.suse.de ([10.150.64.162]) by imap2.dmz-prg2.suse.org with ESMTPSA id eL/3H9hk52XjfgAAn2gu4w (envelope-from ); Tue, 05 Mar 2024 18:30:48 +0000 Date: Tue, 5 Mar 2024 19:32:02 +0100 From: Oscar Salvador To: Marco Elver Cc: kernel test robot , oe-lkp@lists.linux.dev, lkp@intel.com, Linux Memory Management List , Andrew Morton , Vlastimil Babka , Andrey Konovalov , Alexander Potapenko , Michal Hocko , linux-kernel@vger.kernel.org Subject: Re: [linux-next:master] [mm,page_owner] 4bedfb314b: BUG:KASAN:null-ptr-deref_in_init_page_owner Message-ID: References: <202403051032.e2f865a-lkp@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Rspam-User: X-Stat-Signature: si8grenf58hd3gy8o84fxbqh3mqx4dg3 X-Rspamd-Server: rspam07 X-Rspamd-Queue-Id: F01A314001B X-HE-Tag: 1709663450-532634 X-HE-Meta: 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Tue, Mar 05, 2024 at 02:02:35PM +0100, Marco Elver wrote: > On Tue, 5 Mar 2024 at 10:26, Oscar Salvador wrote: > > Marco, could it be that stackdepot was too overloaded, that by the time > > page_owner gets initialized, there are no more space for its stacks, and > > hence return 0-handles?. > > That's possible. But it's unclear to me what exactly happens. Are you > able to reproduce the issue? (I haven't been able to because the > config enables CFI which seems to cause other issues for me, > presumably toolchain related. :-/ ) I am out of luck here, I cannot reproduce the issue. I set up the environment just as [1] says, building the kernel with their config and launching bin/lkp just as [1] states, but it boots fine here. [1] https://download.01.org/0day-ci/archive/20240305/202403051032.e2f865a-lkp@intel.com/reproduce -- Oscar Salvador SUSE Labs