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* drivers/xen/swiotlb-xen.c:206 xen_swiotlb_init() error: uninitialized symbol 'start'.
@ 2021-11-19  1:56 kernel test robot
  0 siblings, 0 replies; 2+ messages in thread
From: kernel test robot @ 2021-11-19  1:56 UTC (permalink / raw)
  To: kbuild

[-- Attachment #1: Type: text/plain, Size: 8717 bytes --]

CC: kbuild-all(a)lists.01.org
CC: linux-kernel(a)vger.kernel.org
TO: Christoph Hellwig <hch@lst.de>
CC: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   e26dd976580a6a427c69e6116508dd3d412742e5
commit: cbce99527ca7c4e98db9890651d5e9dfc2fb89ac xen-swiotlb: remove xen_io_tlb_start and xen_io_tlb_nslabs
date:   8 months ago
:::::: branch date: 3 hours ago
:::::: commit date: 8 months ago
config: arm-randconfig-m031-20211116 (attached as .config)
compiler: arm-linux-gnueabi-gcc (GCC) 11.2.0

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>

smatch warnings:
drivers/xen/swiotlb-xen.c:206 xen_swiotlb_init() error: uninitialized symbol 'start'.

vim +/start +206 drivers/xen/swiotlb-xen.c

4035b43da6daa51 Christoph Hellwig     2021-03-01  158  
b82776005369899 Konrad Rzeszutek Wilk 2012-08-23  159  int __ref xen_swiotlb_init(int verbose, bool early)
b097186fd29d5bc Konrad Rzeszutek Wilk 2010-05-11  160  {
b82776005369899 Konrad Rzeszutek Wilk 2012-08-23  161  	unsigned long bytes, order;
f4b2f07b2ed9b46 Konrad Rzeszutek Wilk 2011-07-22  162  	int rc = -ENOMEM;
5bab7864b1167f9 Konrad Rzeszutek Wilk 2012-08-23  163  	enum xen_swiotlb_err m_ret = XEN_SWIOTLB_UNKNOWN;
f4b2f07b2ed9b46 Konrad Rzeszutek Wilk 2011-07-22  164  	unsigned int repeat = 3;
cbce99527ca7c4e Christoph Hellwig     2021-03-01  165  	char *start;
cbce99527ca7c4e Christoph Hellwig     2021-03-01  166  	unsigned long nslabs;
b097186fd29d5bc Konrad Rzeszutek Wilk 2010-05-11  167  
cbce99527ca7c4e Christoph Hellwig     2021-03-01  168  	nslabs = swiotlb_nr_tbl();
f4b2f07b2ed9b46 Konrad Rzeszutek Wilk 2011-07-22  169  retry:
cbce99527ca7c4e Christoph Hellwig     2021-03-01  170  	if (!nslabs)
cbce99527ca7c4e Christoph Hellwig     2021-03-01  171  		nslabs = DEFAULT_NSLABS;
cbce99527ca7c4e Christoph Hellwig     2021-03-01  172  	bytes = nslabs << IO_TLB_SHIFT;
4035b43da6daa51 Christoph Hellwig     2021-03-01  173  	order = get_order(bytes);
4e7372e0dc5d7d2 Stefano Stabellini    2019-05-28  174  
4e7372e0dc5d7d2 Stefano Stabellini    2019-05-28  175  	/*
4e7372e0dc5d7d2 Stefano Stabellini    2019-05-28  176  	 * IO TLB memory already allocated. Just use it.
4e7372e0dc5d7d2 Stefano Stabellini    2019-05-28  177  	 */
cbce99527ca7c4e Christoph Hellwig     2021-03-01  178  	if (io_tlb_start != 0)
4e7372e0dc5d7d2 Stefano Stabellini    2019-05-28  179  		goto end;
4e7372e0dc5d7d2 Stefano Stabellini    2019-05-28  180  
b097186fd29d5bc Konrad Rzeszutek Wilk 2010-05-11  181  	/*
b097186fd29d5bc Konrad Rzeszutek Wilk 2010-05-11  182  	 * Get IO TLB memory from any location.
b097186fd29d5bc Konrad Rzeszutek Wilk 2010-05-11  183  	 */
8a7f97b902f4fb0 Mike Rapoport         2019-03-11  184  	if (early) {
cbce99527ca7c4e Christoph Hellwig     2021-03-01  185  		start = memblock_alloc(PAGE_ALIGN(bytes),
15c3c114ed144e5 Mike Rapoport         2018-10-30  186  						  PAGE_SIZE);
cbce99527ca7c4e Christoph Hellwig     2021-03-01  187  		if (!start)
8a7f97b902f4fb0 Mike Rapoport         2019-03-11  188  			panic("%s: Failed to allocate %lu bytes align=0x%lx\n",
8a7f97b902f4fb0 Mike Rapoport         2019-03-11  189  			      __func__, PAGE_ALIGN(bytes), PAGE_SIZE);
8a7f97b902f4fb0 Mike Rapoport         2019-03-11  190  	} else {
b82776005369899 Konrad Rzeszutek Wilk 2012-08-23  191  #define SLABS_PER_PAGE (1 << (PAGE_SHIFT - IO_TLB_SHIFT))
b82776005369899 Konrad Rzeszutek Wilk 2012-08-23  192  #define IO_TLB_MIN_SLABS ((1<<20) >> IO_TLB_SHIFT)
b82776005369899 Konrad Rzeszutek Wilk 2012-08-23  193  		while ((SLABS_PER_PAGE << order) > IO_TLB_MIN_SLABS) {
cbce99527ca7c4e Christoph Hellwig     2021-03-01  194  			start = (void *)xen_get_swiotlb_free_pages(order);
cbce99527ca7c4e Christoph Hellwig     2021-03-01  195  			if (start)
b82776005369899 Konrad Rzeszutek Wilk 2012-08-23  196  				break;
b82776005369899 Konrad Rzeszutek Wilk 2012-08-23  197  			order--;
b82776005369899 Konrad Rzeszutek Wilk 2012-08-23  198  		}
b82776005369899 Konrad Rzeszutek Wilk 2012-08-23  199  		if (order != get_order(bytes)) {
283c0972d53769e Joe Perches           2013-06-28  200  			pr_warn("Warning: only able to allocate %ld MB for software IO TLB\n",
283c0972d53769e Joe Perches           2013-06-28  201  				(PAGE_SIZE << order) >> 20);
cbce99527ca7c4e Christoph Hellwig     2021-03-01  202  			nslabs = SLABS_PER_PAGE << order;
cbce99527ca7c4e Christoph Hellwig     2021-03-01  203  			bytes = nslabs << IO_TLB_SHIFT;
b82776005369899 Konrad Rzeszutek Wilk 2012-08-23  204  		}
b82776005369899 Konrad Rzeszutek Wilk 2012-08-23  205  	}
cbce99527ca7c4e Christoph Hellwig     2021-03-01 @206  	if (!start) {
5bab7864b1167f9 Konrad Rzeszutek Wilk 2012-08-23  207  		m_ret = XEN_SWIOTLB_ENOMEM;
f4b2f07b2ed9b46 Konrad Rzeszutek Wilk 2011-07-22  208  		goto error;
f4b2f07b2ed9b46 Konrad Rzeszutek Wilk 2011-07-22  209  	}
b097186fd29d5bc Konrad Rzeszutek Wilk 2010-05-11  210  	/*
b097186fd29d5bc Konrad Rzeszutek Wilk 2010-05-11  211  	 * And replace that memory with pages under 4GB.
b097186fd29d5bc Konrad Rzeszutek Wilk 2010-05-11  212  	 */
cbce99527ca7c4e Christoph Hellwig     2021-03-01  213  	rc = xen_swiotlb_fixup(start,
b097186fd29d5bc Konrad Rzeszutek Wilk 2010-05-11  214  			       bytes,
cbce99527ca7c4e Christoph Hellwig     2021-03-01  215  			       nslabs);
f4b2f07b2ed9b46 Konrad Rzeszutek Wilk 2011-07-22  216  	if (rc) {
b82776005369899 Konrad Rzeszutek Wilk 2012-08-23  217  		if (early)
cbce99527ca7c4e Christoph Hellwig     2021-03-01  218  			memblock_free(__pa(start),
2013288f7238878 Mike Rapoport         2018-10-30  219  				      PAGE_ALIGN(bytes));
b82776005369899 Konrad Rzeszutek Wilk 2012-08-23  220  		else {
cbce99527ca7c4e Christoph Hellwig     2021-03-01  221  			free_pages((unsigned long)start, order);
cbce99527ca7c4e Christoph Hellwig     2021-03-01  222  			start = NULL;
b82776005369899 Konrad Rzeszutek Wilk 2012-08-23  223  		}
5bab7864b1167f9 Konrad Rzeszutek Wilk 2012-08-23  224  		m_ret = XEN_SWIOTLB_EFIXUP;
b097186fd29d5bc Konrad Rzeszutek Wilk 2010-05-11  225  		goto error;
f4b2f07b2ed9b46 Konrad Rzeszutek Wilk 2011-07-22  226  	}
c468bdee28a1cb6 Konrad Rzeszutek Wilk 2012-09-17  227  	if (early) {
cbce99527ca7c4e Christoph Hellwig     2021-03-01  228  		if (swiotlb_init_with_tbl(start, nslabs,
ac2cbab21f318e1 Yinghai Lu            2013-01-24  229  			 verbose))
ac2cbab21f318e1 Yinghai Lu            2013-01-24  230  			panic("Cannot allocate SWIOTLB buffer");
c468bdee28a1cb6 Konrad Rzeszutek Wilk 2012-09-17  231  		rc = 0;
c468bdee28a1cb6 Konrad Rzeszutek Wilk 2012-09-17  232  	} else
cbce99527ca7c4e Christoph Hellwig     2021-03-01  233  		rc = swiotlb_late_init_with_tbl(start, nslabs);
7453c549f5f6485 Konrad Rzeszutek Wilk 2016-12-20  234  
4e7372e0dc5d7d2 Stefano Stabellini    2019-05-28  235  end:
7453c549f5f6485 Konrad Rzeszutek Wilk 2016-12-20  236  	if (!rc)
7453c549f5f6485 Konrad Rzeszutek Wilk 2016-12-20  237  		swiotlb_set_max_segment(PAGE_SIZE);
7453c549f5f6485 Konrad Rzeszutek Wilk 2016-12-20  238  
b82776005369899 Konrad Rzeszutek Wilk 2012-08-23  239  	return rc;
b097186fd29d5bc Konrad Rzeszutek Wilk 2010-05-11  240  error:
f4b2f07b2ed9b46 Konrad Rzeszutek Wilk 2011-07-22  241  	if (repeat--) {
cbce99527ca7c4e Christoph Hellwig     2021-03-01  242  		nslabs = max(1024UL, /* Min is 2MB */
cbce99527ca7c4e Christoph Hellwig     2021-03-01  243  					(nslabs >> 1));
283c0972d53769e Joe Perches           2013-06-28  244  		pr_info("Lowering to %luMB\n",
cbce99527ca7c4e Christoph Hellwig     2021-03-01  245  			(nslabs << IO_TLB_SHIFT) >> 20);
f4b2f07b2ed9b46 Konrad Rzeszutek Wilk 2011-07-22  246  		goto retry;
f4b2f07b2ed9b46 Konrad Rzeszutek Wilk 2011-07-22  247  	}
283c0972d53769e Joe Perches           2013-06-28  248  	pr_err("%s (rc:%d)\n", xen_swiotlb_error(m_ret), rc);
b82776005369899 Konrad Rzeszutek Wilk 2012-08-23  249  	if (early)
5bab7864b1167f9 Konrad Rzeszutek Wilk 2012-08-23  250  		panic("%s (rc:%d)", xen_swiotlb_error(m_ret), rc);
b82776005369899 Konrad Rzeszutek Wilk 2012-08-23  251  	else
cbce99527ca7c4e Christoph Hellwig     2021-03-01  252  		free_pages((unsigned long)start, order);
b82776005369899 Konrad Rzeszutek Wilk 2012-08-23  253  	return rc;
b097186fd29d5bc Konrad Rzeszutek Wilk 2010-05-11  254  }
dceb1a6819ab2c8 Christoph Hellwig     2017-05-21  255  

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org

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^ permalink raw reply	[flat|nested] 2+ messages in thread

* drivers/xen/swiotlb-xen.c:206 xen_swiotlb_init() error: uninitialized symbol 'start'.
@ 2022-01-17  2:59 kernel test robot
  0 siblings, 0 replies; 2+ messages in thread
From: kernel test robot @ 2022-01-17  2:59 UTC (permalink / raw)
  To: kbuild

[-- Attachment #1: Type: text/plain, Size: 8816 bytes --]

CC: kbuild-all(a)lists.01.org
CC: linux-kernel(a)vger.kernel.org
TO: Christoph Hellwig <hch@lst.de>
CC: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   79e06c4c4950be2abd8ca5d2428a8c915aa62c24
commit: cbce99527ca7c4e98db9890651d5e9dfc2fb89ac xen-swiotlb: remove xen_io_tlb_start and xen_io_tlb_nslabs
date:   10 months ago
:::::: branch date: 13 hours ago
:::::: commit date: 10 months ago
config: arm-randconfig-m031-20220116 (https://download.01.org/0day-ci/archive/20220117/202201171049.JsHkmgNy-lkp(a)intel.com/config)
compiler: arm-linux-gnueabi-gcc (GCC) 11.2.0

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>

New smatch warnings:
drivers/xen/swiotlb-xen.c:206 xen_swiotlb_init() error: uninitialized symbol 'start'.

Old smatch warnings:
arch/arm/include/asm/dma-direct.h:24 dma_to_pfn() warn: should 'pfn << 12' be a 64 bit type?

vim +/start +206 drivers/xen/swiotlb-xen.c

4035b43da6daa5 Christoph Hellwig     2021-03-01  158  
b8277600536989 Konrad Rzeszutek Wilk 2012-08-23  159  int __ref xen_swiotlb_init(int verbose, bool early)
b097186fd29d5b Konrad Rzeszutek Wilk 2010-05-11  160  {
b8277600536989 Konrad Rzeszutek Wilk 2012-08-23  161  	unsigned long bytes, order;
f4b2f07b2ed9b4 Konrad Rzeszutek Wilk 2011-07-22  162  	int rc = -ENOMEM;
5bab7864b1167f Konrad Rzeszutek Wilk 2012-08-23  163  	enum xen_swiotlb_err m_ret = XEN_SWIOTLB_UNKNOWN;
f4b2f07b2ed9b4 Konrad Rzeszutek Wilk 2011-07-22  164  	unsigned int repeat = 3;
cbce99527ca7c4 Christoph Hellwig     2021-03-01  165  	char *start;
cbce99527ca7c4 Christoph Hellwig     2021-03-01  166  	unsigned long nslabs;
b097186fd29d5b Konrad Rzeszutek Wilk 2010-05-11  167  
cbce99527ca7c4 Christoph Hellwig     2021-03-01  168  	nslabs = swiotlb_nr_tbl();
f4b2f07b2ed9b4 Konrad Rzeszutek Wilk 2011-07-22  169  retry:
cbce99527ca7c4 Christoph Hellwig     2021-03-01  170  	if (!nslabs)
cbce99527ca7c4 Christoph Hellwig     2021-03-01  171  		nslabs = DEFAULT_NSLABS;
cbce99527ca7c4 Christoph Hellwig     2021-03-01  172  	bytes = nslabs << IO_TLB_SHIFT;
4035b43da6daa5 Christoph Hellwig     2021-03-01  173  	order = get_order(bytes);
4e7372e0dc5d7d Stefano Stabellini    2019-05-28  174  
4e7372e0dc5d7d Stefano Stabellini    2019-05-28  175  	/*
4e7372e0dc5d7d Stefano Stabellini    2019-05-28  176  	 * IO TLB memory already allocated. Just use it.
4e7372e0dc5d7d Stefano Stabellini    2019-05-28  177  	 */
cbce99527ca7c4 Christoph Hellwig     2021-03-01  178  	if (io_tlb_start != 0)
4e7372e0dc5d7d Stefano Stabellini    2019-05-28  179  		goto end;
4e7372e0dc5d7d Stefano Stabellini    2019-05-28  180  
b097186fd29d5b Konrad Rzeszutek Wilk 2010-05-11  181  	/*
b097186fd29d5b Konrad Rzeszutek Wilk 2010-05-11  182  	 * Get IO TLB memory from any location.
b097186fd29d5b Konrad Rzeszutek Wilk 2010-05-11  183  	 */
8a7f97b902f4fb Mike Rapoport         2019-03-11  184  	if (early) {
cbce99527ca7c4 Christoph Hellwig     2021-03-01  185  		start = memblock_alloc(PAGE_ALIGN(bytes),
15c3c114ed144e Mike Rapoport         2018-10-30  186  						  PAGE_SIZE);
cbce99527ca7c4 Christoph Hellwig     2021-03-01  187  		if (!start)
8a7f97b902f4fb Mike Rapoport         2019-03-11  188  			panic("%s: Failed to allocate %lu bytes align=0x%lx\n",
8a7f97b902f4fb Mike Rapoport         2019-03-11  189  			      __func__, PAGE_ALIGN(bytes), PAGE_SIZE);
8a7f97b902f4fb Mike Rapoport         2019-03-11  190  	} else {
b8277600536989 Konrad Rzeszutek Wilk 2012-08-23  191  #define SLABS_PER_PAGE (1 << (PAGE_SHIFT - IO_TLB_SHIFT))
b8277600536989 Konrad Rzeszutek Wilk 2012-08-23  192  #define IO_TLB_MIN_SLABS ((1<<20) >> IO_TLB_SHIFT)
b8277600536989 Konrad Rzeszutek Wilk 2012-08-23  193  		while ((SLABS_PER_PAGE << order) > IO_TLB_MIN_SLABS) {
cbce99527ca7c4 Christoph Hellwig     2021-03-01  194  			start = (void *)xen_get_swiotlb_free_pages(order);
cbce99527ca7c4 Christoph Hellwig     2021-03-01  195  			if (start)
b8277600536989 Konrad Rzeszutek Wilk 2012-08-23  196  				break;
b8277600536989 Konrad Rzeszutek Wilk 2012-08-23  197  			order--;
b8277600536989 Konrad Rzeszutek Wilk 2012-08-23  198  		}
b8277600536989 Konrad Rzeszutek Wilk 2012-08-23  199  		if (order != get_order(bytes)) {
283c0972d53769 Joe Perches           2013-06-28  200  			pr_warn("Warning: only able to allocate %ld MB for software IO TLB\n",
283c0972d53769 Joe Perches           2013-06-28  201  				(PAGE_SIZE << order) >> 20);
cbce99527ca7c4 Christoph Hellwig     2021-03-01  202  			nslabs = SLABS_PER_PAGE << order;
cbce99527ca7c4 Christoph Hellwig     2021-03-01  203  			bytes = nslabs << IO_TLB_SHIFT;
b8277600536989 Konrad Rzeszutek Wilk 2012-08-23  204  		}
b8277600536989 Konrad Rzeszutek Wilk 2012-08-23  205  	}
cbce99527ca7c4 Christoph Hellwig     2021-03-01 @206  	if (!start) {
5bab7864b1167f Konrad Rzeszutek Wilk 2012-08-23  207  		m_ret = XEN_SWIOTLB_ENOMEM;
f4b2f07b2ed9b4 Konrad Rzeszutek Wilk 2011-07-22  208  		goto error;
f4b2f07b2ed9b4 Konrad Rzeszutek Wilk 2011-07-22  209  	}
b097186fd29d5b Konrad Rzeszutek Wilk 2010-05-11  210  	/*
b097186fd29d5b Konrad Rzeszutek Wilk 2010-05-11  211  	 * And replace that memory with pages under 4GB.
b097186fd29d5b Konrad Rzeszutek Wilk 2010-05-11  212  	 */
cbce99527ca7c4 Christoph Hellwig     2021-03-01  213  	rc = xen_swiotlb_fixup(start,
b097186fd29d5b Konrad Rzeszutek Wilk 2010-05-11  214  			       bytes,
cbce99527ca7c4 Christoph Hellwig     2021-03-01  215  			       nslabs);
f4b2f07b2ed9b4 Konrad Rzeszutek Wilk 2011-07-22  216  	if (rc) {
b8277600536989 Konrad Rzeszutek Wilk 2012-08-23  217  		if (early)
cbce99527ca7c4 Christoph Hellwig     2021-03-01  218  			memblock_free(__pa(start),
2013288f723887 Mike Rapoport         2018-10-30  219  				      PAGE_ALIGN(bytes));
b8277600536989 Konrad Rzeszutek Wilk 2012-08-23  220  		else {
cbce99527ca7c4 Christoph Hellwig     2021-03-01  221  			free_pages((unsigned long)start, order);
cbce99527ca7c4 Christoph Hellwig     2021-03-01  222  			start = NULL;
b8277600536989 Konrad Rzeszutek Wilk 2012-08-23  223  		}
5bab7864b1167f Konrad Rzeszutek Wilk 2012-08-23  224  		m_ret = XEN_SWIOTLB_EFIXUP;
b097186fd29d5b Konrad Rzeszutek Wilk 2010-05-11  225  		goto error;
f4b2f07b2ed9b4 Konrad Rzeszutek Wilk 2011-07-22  226  	}
c468bdee28a1cb Konrad Rzeszutek Wilk 2012-09-17  227  	if (early) {
cbce99527ca7c4 Christoph Hellwig     2021-03-01  228  		if (swiotlb_init_with_tbl(start, nslabs,
ac2cbab21f318e Yinghai Lu            2013-01-24  229  			 verbose))
ac2cbab21f318e Yinghai Lu            2013-01-24  230  			panic("Cannot allocate SWIOTLB buffer");
c468bdee28a1cb Konrad Rzeszutek Wilk 2012-09-17  231  		rc = 0;
c468bdee28a1cb Konrad Rzeszutek Wilk 2012-09-17  232  	} else
cbce99527ca7c4 Christoph Hellwig     2021-03-01  233  		rc = swiotlb_late_init_with_tbl(start, nslabs);
7453c549f5f648 Konrad Rzeszutek Wilk 2016-12-20  234  
4e7372e0dc5d7d Stefano Stabellini    2019-05-28  235  end:
7453c549f5f648 Konrad Rzeszutek Wilk 2016-12-20  236  	if (!rc)
7453c549f5f648 Konrad Rzeszutek Wilk 2016-12-20  237  		swiotlb_set_max_segment(PAGE_SIZE);
7453c549f5f648 Konrad Rzeszutek Wilk 2016-12-20  238  
b8277600536989 Konrad Rzeszutek Wilk 2012-08-23  239  	return rc;
b097186fd29d5b Konrad Rzeszutek Wilk 2010-05-11  240  error:
f4b2f07b2ed9b4 Konrad Rzeszutek Wilk 2011-07-22  241  	if (repeat--) {
cbce99527ca7c4 Christoph Hellwig     2021-03-01  242  		nslabs = max(1024UL, /* Min is 2MB */
cbce99527ca7c4 Christoph Hellwig     2021-03-01  243  					(nslabs >> 1));
283c0972d53769 Joe Perches           2013-06-28  244  		pr_info("Lowering to %luMB\n",
cbce99527ca7c4 Christoph Hellwig     2021-03-01  245  			(nslabs << IO_TLB_SHIFT) >> 20);
f4b2f07b2ed9b4 Konrad Rzeszutek Wilk 2011-07-22  246  		goto retry;
f4b2f07b2ed9b4 Konrad Rzeszutek Wilk 2011-07-22  247  	}
283c0972d53769 Joe Perches           2013-06-28  248  	pr_err("%s (rc:%d)\n", xen_swiotlb_error(m_ret), rc);
b8277600536989 Konrad Rzeszutek Wilk 2012-08-23  249  	if (early)
5bab7864b1167f Konrad Rzeszutek Wilk 2012-08-23  250  		panic("%s (rc:%d)", xen_swiotlb_error(m_ret), rc);
b8277600536989 Konrad Rzeszutek Wilk 2012-08-23  251  	else
cbce99527ca7c4 Christoph Hellwig     2021-03-01  252  		free_pages((unsigned long)start, order);
b8277600536989 Konrad Rzeszutek Wilk 2012-08-23  253  	return rc;
b097186fd29d5b Konrad Rzeszutek Wilk 2010-05-11  254  }
dceb1a6819ab2c Christoph Hellwig     2017-05-21  255  

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org

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2022-01-17  2:59 drivers/xen/swiotlb-xen.c:206 xen_swiotlb_init() error: uninitialized symbol 'start' kernel test robot
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2021-11-19  1:56 kernel test robot

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