mm/page_alloc.c:3728:1: warning: stack frame size of 2064 bytes in function 'get_page_from_freelist'

From: kernel test robot
Date: Thu Mar 04 2021 - 13:22:36 EST

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tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: f69d02e37a85645aa90d18cacfff36dba370f797
commit: 1d91df85f399adbe4f318f3e74ac5a5d84c0ca7c mm/page_alloc: handle a missing case for memalloc_nocma_{save/restore} APIs
date: 5 months ago
config: powerpc-randconfig-r023-20210304 (attached as .config)
compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project eec7f8f7b1226be422a76542cb403d02538f453a)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# install powerpc cross compiling tool for clang build
# apt-get install binutils-powerpc-linux-gnu
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=1d91df85f399adbe4f318f3e74ac5a5d84c0ca7c
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 1d91df85f399adbe4f318f3e74ac5a5d84c0ca7c
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=powerpc

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@xxxxxxxxx>

All warnings (new ones prefixed by >>):

In file included from include/linux/hardirq.h:10:
In file included from arch/powerpc/include/asm/hardirq.h:6:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/powerpc/include/asm/io.h:604:
arch/powerpc/include/asm/io-defs.h:45:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
DEF_PCI_AC_NORET(insw, (unsigned long p, void *b, unsigned long c),
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
arch/powerpc/include/asm/io.h:601:3: note: expanded from macro 'DEF_PCI_AC_NORET'
__do_##name al; \
^~~~~~~~~~~~~~
<scratch space>:239:1: note: expanded from here
__do_insw
^
arch/powerpc/include/asm/io.h:542:56: note: expanded from macro '__do_insw'
#define __do_insw(p, b, n) readsw((PCI_IO_ADDR)_IO_BASE+(p), (b), (n))
~~~~~~~~~~~~~~~~~~~~~^
In file included from mm/page_alloc.c:20:
In file included from include/linux/highmem.h:10:
In file included from include/linux/hardirq.h:10:
In file included from arch/powerpc/include/asm/hardirq.h:6:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/powerpc/include/asm/io.h:604:
arch/powerpc/include/asm/io-defs.h:47:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
DEF_PCI_AC_NORET(insl, (unsigned long p, void *b, unsigned long c),
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
arch/powerpc/include/asm/io.h:601:3: note: expanded from macro 'DEF_PCI_AC_NORET'
__do_##name al; \
^~~~~~~~~~~~~~
<scratch space>:244:1: note: expanded from here
__do_insl
^
arch/powerpc/include/asm/io.h:543:56: note: expanded from macro '__do_insl'
#define __do_insl(p, b, n) readsl((PCI_IO_ADDR)_IO_BASE+(p), (b), (n))
~~~~~~~~~~~~~~~~~~~~~^
In file included from mm/page_alloc.c:20:
In file included from include/linux/highmem.h:10:
In file included from include/linux/hardirq.h:10:
In file included from arch/powerpc/include/asm/hardirq.h:6:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/powerpc/include/asm/io.h:604:
arch/powerpc/include/asm/io-defs.h:49:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
DEF_PCI_AC_NORET(outsb, (unsigned long p, const void *b, unsigned long c),
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
arch/powerpc/include/asm/io.h:601:3: note: expanded from macro 'DEF_PCI_AC_NORET'
__do_##name al; \
^~~~~~~~~~~~~~
<scratch space>:249:1: note: expanded from here
__do_outsb
^
arch/powerpc/include/asm/io.h:544:58: note: expanded from macro '__do_outsb'
#define __do_outsb(p, b, n) writesb((PCI_IO_ADDR)_IO_BASE+(p),(b),(n))
~~~~~~~~~~~~~~~~~~~~~^
In file included from mm/page_alloc.c:20:
In file included from include/linux/highmem.h:10:
In file included from include/linux/hardirq.h:10:
In file included from arch/powerpc/include/asm/hardirq.h:6:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/powerpc/include/asm/io.h:604:
arch/powerpc/include/asm/io-defs.h:51:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
DEF_PCI_AC_NORET(outsw, (unsigned long p, const void *b, unsigned long c),
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
arch/powerpc/include/asm/io.h:601:3: note: expanded from macro 'DEF_PCI_AC_NORET'
__do_##name al; \
^~~~~~~~~~~~~~
<scratch space>:4:1: note: expanded from here
__do_outsw
^
arch/powerpc/include/asm/io.h:545:58: note: expanded from macro '__do_outsw'
#define __do_outsw(p, b, n) writesw((PCI_IO_ADDR)_IO_BASE+(p),(b),(n))
~~~~~~~~~~~~~~~~~~~~~^
In file included from mm/page_alloc.c:20:
In file included from include/linux/highmem.h:10:
In file included from include/linux/hardirq.h:10:
In file included from arch/powerpc/include/asm/hardirq.h:6:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/powerpc/include/asm/io.h:604:
arch/powerpc/include/asm/io-defs.h:53:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
DEF_PCI_AC_NORET(outsl, (unsigned long p, const void *b, unsigned long c),
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
arch/powerpc/include/asm/io.h:601:3: note: expanded from macro 'DEF_PCI_AC_NORET'
__do_##name al; \
^~~~~~~~~~~~~~
<scratch space>:9:1: note: expanded from here
__do_outsl
^
arch/powerpc/include/asm/io.h:546:58: note: expanded from macro '__do_outsl'
#define __do_outsl(p, b, n) writesl((PCI_IO_ADDR)_IO_BASE+(p),(b),(n))
~~~~~~~~~~~~~~~~~~~~~^
mm/page_alloc.c:6138:23: warning: no previous prototype for function 'memmap_init' [-Wmissing-prototypes]
void __meminit __weak memmap_init(unsigned long size, int nid,
^
mm/page_alloc.c:6138:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
void __meminit __weak memmap_init(unsigned long size, int nid,
^
static
>> mm/page_alloc.c:3728:1: warning: stack frame size of 2064 bytes in function 'get_page_from_freelist' [-Wframe-larger-than=]
get_page_from_freelist(gfp_t gfp_mask, unsigned int order, int alloc_flags,
^
14 warnings generated.

vim +/get_page_from_freelist +3728 mm/page_alloc.c

8510e69c8efef82 Joonsoo Kim 2020-08-06 3722
7fb1d9fca5c6e3b Rohit Seth 2005-11-13 3723 /*
0798e5193cd70f6 Paul Jackson 2006-12-06 3724 * get_page_from_freelist goes through the zonelist trying to allocate
7fb1d9fca5c6e3b Rohit Seth 2005-11-13 3725 * a page.
7fb1d9fca5c6e3b Rohit Seth 2005-11-13 3726 */
7fb1d9fca5c6e3b Rohit Seth 2005-11-13 3727 static struct page *
a9263751e11a07a Vlastimil Babka 2015-02-11 @3728 get_page_from_freelist(gfp_t gfp_mask, unsigned int order, int alloc_flags,
a9263751e11a07a Vlastimil Babka 2015-02-11 3729 const struct alloc_context *ac)
753ee728964e5af Martin Hicks 2005-06-21 3730 {
6bb154504f8b496 Mel Gorman 2018-12-28 3731 struct zoneref *z;
5117f45d11a9ee6 Mel Gorman 2009-06-16 3732 struct zone *zone;
3b8c0be43cb844b Mel Gorman 2016-07-28 3733 struct pglist_data *last_pgdat_dirty_limit = NULL;
6bb154504f8b496 Mel Gorman 2018-12-28 3734 bool no_fallback;
3b8c0be43cb844b Mel Gorman 2016-07-28 3735
6bb154504f8b496 Mel Gorman 2018-12-28 3736 retry:
7fb1d9fca5c6e3b Rohit Seth 2005-11-13 3737 /*
9276b1bc96a132f Paul Jackson 2006-12-06 3738 * Scan zonelist, looking for a zone with enough free.
344736f29b35979 Vladimir Davydov 2014-10-20 3739 * See also __cpuset_node_allowed() comment in kernel/cpuset.c.
7fb1d9fca5c6e3b Rohit Seth 2005-11-13 3740 */
6bb154504f8b496 Mel Gorman 2018-12-28 3741 no_fallback = alloc_flags & ALLOC_NOFRAGMENT;
6bb154504f8b496 Mel Gorman 2018-12-28 3742 z = ac->preferred_zoneref;
97a225e69a1f880 Joonsoo Kim 2020-06-03 3743 for_next_zone_zonelist_nodemask(zone, z, ac->zonelist,
97a225e69a1f880 Joonsoo Kim 2020-06-03 3744 ac->highest_zoneidx, ac->nodemask) {
be06af002f6d50d Mel Gorman 2016-05-19 3745 struct page *page;
e085dbc52fad8d7 Johannes Weiner 2013-09-11 3746 unsigned long mark;
e085dbc52fad8d7 Johannes Weiner 2013-09-11 3747
664eeddeef65392 Mel Gorman 2014-06-04 3748 if (cpusets_enabled() &&
664eeddeef65392 Mel Gorman 2014-06-04 3749 (alloc_flags & ALLOC_CPUSET) &&
002f290627c2706 Vlastimil Babka 2016-05-19 3750 !__cpuset_zone_allowed(zone, gfp_mask))
cd38b115d5ad79b Mel Gorman 2011-07-25 3751 continue;
a756cf5908530e8 Johannes Weiner 2012-01-10 3752 /*
a756cf5908530e8 Johannes Weiner 2012-01-10 3753 * When allocating a page cache page for writing, we
281e37265f2826e Mel Gorman 2016-07-28 3754 * want to get it from a node that is within its dirty
281e37265f2826e Mel Gorman 2016-07-28 3755 * limit, such that no single node holds more than its
a756cf5908530e8 Johannes Weiner 2012-01-10 3756 * proportional share of globally allowed dirty pages.
281e37265f2826e Mel Gorman 2016-07-28 3757 * The dirty limits take into account the node's
a756cf5908530e8 Johannes Weiner 2012-01-10 3758 * lowmem reserves and high watermark so that kswapd
a756cf5908530e8 Johannes Weiner 2012-01-10 3759 * should be able to balance it without having to
a756cf5908530e8 Johannes Weiner 2012-01-10 3760 * write pages from its LRU list.
a756cf5908530e8 Johannes Weiner 2012-01-10 3761 *
a756cf5908530e8 Johannes Weiner 2012-01-10 3762 * XXX: For now, allow allocations to potentially
281e37265f2826e Mel Gorman 2016-07-28 3763 * exceed the per-node dirty limit in the slowpath
c9ab0c4fbeb0202 Mel Gorman 2015-11-06 3764 * (spread_dirty_pages unset) before going into reclaim,
a756cf5908530e8 Johannes Weiner 2012-01-10 3765 * which is important when on a NUMA setup the allowed
281e37265f2826e Mel Gorman 2016-07-28 3766 * nodes are together not big enough to reach the
a756cf5908530e8 Johannes Weiner 2012-01-10 3767 * global limit. The proper fix for these situations
281e37265f2826e Mel Gorman 2016-07-28 3768 * will require awareness of nodes in the
a756cf5908530e8 Johannes Weiner 2012-01-10 3769 * dirty-throttling and the flusher threads.
a756cf5908530e8 Johannes Weiner 2012-01-10 3770 */
3b8c0be43cb844b Mel Gorman 2016-07-28 3771 if (ac->spread_dirty_pages) {
3b8c0be43cb844b Mel Gorman 2016-07-28 3772 if (last_pgdat_dirty_limit == zone->zone_pgdat)
3b8c0be43cb844b Mel Gorman 2016-07-28 3773 continue;
3b8c0be43cb844b Mel Gorman 2016-07-28 3774
3b8c0be43cb844b Mel Gorman 2016-07-28 3775 if (!node_dirty_ok(zone->zone_pgdat)) {
3b8c0be43cb844b Mel Gorman 2016-07-28 3776 last_pgdat_dirty_limit = zone->zone_pgdat;
800a1e750c7b04c Mel Gorman 2014-06-04 3777 continue;
3b8c0be43cb844b Mel Gorman 2016-07-28 3778 }
3b8c0be43cb844b Mel Gorman 2016-07-28 3779 }
7fb1d9fca5c6e3b Rohit Seth 2005-11-13 3780
6bb154504f8b496 Mel Gorman 2018-12-28 3781 if (no_fallback && nr_online_nodes > 1 &&
6bb154504f8b496 Mel Gorman 2018-12-28 3782 zone != ac->preferred_zoneref->zone) {
6bb154504f8b496 Mel Gorman 2018-12-28 3783 int local_nid;
6bb154504f8b496 Mel Gorman 2018-12-28 3784
6bb154504f8b496 Mel Gorman 2018-12-28 3785 /*
6bb154504f8b496 Mel Gorman 2018-12-28 3786 * If moving to a remote node, retry but allow
6bb154504f8b496 Mel Gorman 2018-12-28 3787 * fragmenting fallbacks. Locality is more important
6bb154504f8b496 Mel Gorman 2018-12-28 3788 * than fragmentation avoidance.
6bb154504f8b496 Mel Gorman 2018-12-28 3789 */
6bb154504f8b496 Mel Gorman 2018-12-28 3790 local_nid = zone_to_nid(ac->preferred_zoneref->zone);
6bb154504f8b496 Mel Gorman 2018-12-28 3791 if (zone_to_nid(zone) != local_nid) {
6bb154504f8b496 Mel Gorman 2018-12-28 3792 alloc_flags &= ~ALLOC_NOFRAGMENT;
6bb154504f8b496 Mel Gorman 2018-12-28 3793 goto retry;
6bb154504f8b496 Mel Gorman 2018-12-28 3794 }
6bb154504f8b496 Mel Gorman 2018-12-28 3795 }
6bb154504f8b496 Mel Gorman 2018-12-28 3796
a921444382b49cc Mel Gorman 2018-12-28 3797 mark = wmark_pages(zone, alloc_flags & ALLOC_WMARK_MASK);
48ee5f3696f6249 Mel Gorman 2016-05-19 3798 if (!zone_watermark_fast(zone, order, mark,
f80b08fc44536a3 Charan Teja Reddy 2020-08-06 3799 ac->highest_zoneidx, alloc_flags,
f80b08fc44536a3 Charan Teja Reddy 2020-08-06 3800 gfp_mask)) {
e085dbc52fad8d7 Johannes Weiner 2013-09-11 3801 int ret;
fa5e084e43eb14c Mel Gorman 2009-06-16 3802

:::::: The code at line 3728 was first introduced by commit
:::::: a9263751e11a07af40a98dba88021821cd430cfd mm, page_alloc: reduce number of alloc_pages* functions' parameters

:::::: TO: Vlastimil Babka <vbabka@xxxxxxx>
:::::: CC: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>

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

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