linux-kernel - Re: net/core/page_pool.c:590:9: sparse: sparse: incorrect type in argument 1 (different address spaces)

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Message-ID: <0c95b547-ed2a-4967-b561-1e6defa4c5f4@intel.com>
Date:   Thu, 16 Nov 2023 13:06:46 +0100
From:   Alexander Lobakin <aleksander.lobakin@...el.com>
To:     Jakub Kicinski <kuba@...nel.org>
CC:     kernel test robot <lkp@...el.com>, <oe-kbuild-all@...ts.linux.dev>,
        <linux-kernel@...r.kernel.org>,
        Alexander Duyck <alexanderduyck@...com>
Subject: Re: net/core/page_pool.c:590:9: sparse: sparse: incorrect type in
 argument 1 (different address spaces)

From: Kernel Test Robot <lkp@...el.com>
Date: Thu, 16 Nov 2023 03:12:24 +0800

> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
> head:   c42d9eeef8e5ba9292eda36fd8e3c11f35ee065c
> commit: ff4e538c8c3e675a15e1e49509c55951832e0451 page_pool: add a lockdep check for recycling in hardirq
> date:   3 months ago
> config: loongarch-randconfig-r133-20231107 (https://download.01.org/0day-ci/archive/20231116/202311160339.DbhaH8LX-lkp@intel.com/config)
> compiler: loongarch64-linux-gcc (GCC) 13.2.0
> reproduce: (https://download.01.org/0day-ci/archive/20231116/202311160339.DbhaH8LX-lkp@intel.com/reproduce)
> 
> If you fix the issue in a separate patch/commit (i.e. not just a new version of
> the same patch/commit), kindly add following tags
> | Reported-by: kernel test robot <lkp@...el.com>
> | Closes: https://lore.kernel.org/oe-kbuild-all/202311160339.DbhaH8LX-lkp@intel.com/
> 
> sparse warnings: (new ones prefixed by >>)
>>> net/core/page_pool.c:590:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void *ptr @@     got unsigned int [noderef] __percpu * @@
>    net/core/page_pool.c:590:9: sparse:     expected void *ptr
>    net/core/page_pool.c:590:9: sparse:     got unsigned int [noderef] __percpu *

Eeehhh... False-positive?

Thanks,
Olek