linux-kernel - Re: [PATCH 1/5] IA64-IRQ: Use kmalloc_array() in sn_irq_lh

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Date:   Sat, 27 Aug 2016 04:18:24 +0800
From:   kbuild test robot <lkp@...el.com>
To:     SF Markus Elfring <elfring@...rs.sourceforge.net>
Cc:     kbuild-all@...org, linux-ia64@...r.kernel.org,
        Fenghua Yu <fenghua.yu@...el.com>,
        Tony Luck <tony.luck@...el.com>,
        LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org,
        Julia Lawall <julia.lawall@...6.fr>,
        Paolo Bonzini <pbonzini@...hat.com>
Subject: Re: [PATCH 1/5] IA64-IRQ: Use kmalloc_array() in sn_irq_lh_init()

Hi Markus,

[auto build test ERROR on ia64/next]
[also build test ERROR on v4.8-rc3]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
[Suggest to use git(>=2.9.0) format-patch --base=<commit> (or --base=auto for convenience) to record what (public, well-known) commit your patch series was built on]
[Check https://git-scm.com/docs/git-format-patch for more information]

url:    https://github.com/0day-ci/linux/commits/SF-Markus-Elfring/IA64-Fine-tuning-for-some-function-implementations/20160827-021651
base:   https://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux.git next
config: ia64-allnoconfig (attached as .config)
compiler: ia64-linux-gcc (GCC) 4.9.0
reproduce:
        wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        make.cross ARCH=ia64 

All errors (new ones prefixed by >>):

   arch/ia64/sn/kernel/irq.c: In function 'sn_irq_lh_init':
>> arch/ia64/sn/kernel/irq.c:482:18: error: incompatible type for argument 1 of 'kmalloc'
      sn_irq_lh[i] = kmalloc(*sn_irq_lh[i], GFP_KERNEL);
                     ^
   In file included from arch/ia64/sn/kernel/irq.c:15:0:
   include/linux/slab.h:466:30: note: expected 'size_t' but argument is of type 'struct list_head'
    static __always_inline void *kmalloc(size_t size, gfp_t flags)
                                 ^

vim +/kmalloc +482 arch/ia64/sn/kernel/irq.c

   476	
   477		sn_irq_lh = kmalloc_array(NR_IRQS, sizeof(*sn_irq_lh), GFP_KERNEL);
   478		if (!sn_irq_lh)
   479			panic("SN PCI INIT: Failed to allocate memory for PCI init\n");
   480	
   481		for (i = 0; i < NR_IRQS; i++) {
 > 482			sn_irq_lh[i] = kmalloc(*sn_irq_lh[i], GFP_KERNEL);
   483			if (!sn_irq_lh[i])
   484				panic("SN PCI INIT: Failed IRQ memory allocation\n");
   485	

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