Yinghai Lu f1af98c762 memblock: Fix wraparound in find_region() ...

When trying to find huge range for crashkernel, get

[    0.000000] ------------[ cut here ]------------
[    0.000000] WARNING: at arch/x86/mm/memblock.c:248 memblock_x86_reserve_range+0x40/0x7a()
[    0.000000] Hardware name: Sun Fire x4800
[    0.000000] memblock_x86_reserve_range: wrong range [0xffffffff37000000, 0x137000000)
[    0.000000] Modules linked in:
[    0.000000] Pid: 0, comm: swapper Not tainted 2.6.36-rc5-tip-yh-01876-g1cac214-dirty #59
[    0.000000] Call Trace:
[    0.000000]  [<ffffffff82816f7e>] ? memblock_x86_reserve_range+0x40/0x7a
[    0.000000]  [<ffffffff81078c2d>] warn_slowpath_common+0x85/0x9e
[    0.000000]  [<ffffffff81078d38>] warn_slowpath_fmt+0x6e/0x70
[    0.000000]  [<ffffffff8281e77c>] ? memblock_find_region+0x40/0x78
[    0.000000]  [<ffffffff8281eb1f>] ? memblock_find_base+0x9a/0xb9
[    0.000000]  [<ffffffff82816f7e>] memblock_x86_reserve_range+0x40/0x7a
[    0.000000]  [<ffffffff8280452c>] setup_arch+0x99d/0xb2a
[    0.000000]  [<ffffffff810a3e02>] ? trace_hardirqs_off+0xd/0xf
[    0.000000]  [<ffffffff81cec7d8>] ? _raw_spin_unlock_irqrestore+0x3d/0x4c
[    0.000000]  [<ffffffff827ffcec>] start_kernel+0xde/0x3f1
[    0.000000]  [<ffffffff827ff2d4>] x86_64_start_reservations+0xa0/0xa4
[    0.000000]  [<ffffffff827ff3de>] x86_64_start_kernel+0x106/0x10d
[    0.000000] ---[ end trace a7919e7f17c0a725 ]---
[    0.000000] Reserving 8192MB of memory at 17592186041200MB for crashkernel (System RAM: 526336MB)

This is caused by a wraparound in the test due to size > end;
explicitly check for this condition and fail.

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
LKML-Reference: <4CAA4DD3.1080401@kernel.org>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>

2010-10-05 21:45:35 -07:00

..

backing-dev.c

writeback: avoid unnecessary calculation of bdi dirty thresholds

2010-08-12 08:43:29 -07:00

bootmem.c

x86, memblock: Replace e820_/_early string with memblock_

2010-08-27 11:13:47 -07:00

bounce.c

include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h

2010-03-30 22:02:32 +09:00

compaction.c

mm: compaction: add a tunable that decides when memory should be compacted and when it should be reclaimed

2010-05-25 08:06:59 -07:00

debug-pagealloc.c

…

dmapool.c

…

fadvise.c

readahead: introduce FMODE_RANDOM for POSIX_FADV_RANDOM

2010-03-06 11:26:25 -08:00

failslab.c

include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h

2010-03-30 22:02:32 +09:00

filemap_xip.c

include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h

2010-03-30 22:02:32 +09:00

filemap.c

gcc-4.6: mm: fix unused but set warnings

2010-08-09 20:44:58 -07:00

fremap.c

mm: clean up mm_counter

2010-03-06 11:26:23 -08:00

highmem.c

mm,kdb,kgdb: Add a debug reference for the kdb kmap usage

2010-08-05 09:22:24 -05:00

hugetlb.c

Merge branch 'hwpoison' of git://git.kernel.org/pub/scm/linux/kernel/git/ak/linux-mce-2.6

2010-08-12 10:15:10 -07:00

hwpoison-inject.c

HWPOISON, hugetlb: support hwpoison injection for hugepage

2010-08-11 09:23:11 +02:00

init-mm.c

mm: provide init_mm mm_context initializer

2010-08-09 20:44:54 -07:00

internal.h

HWPOISON: add an interface to switch off/on all the page filters

2009-12-16 12:19:59 +01:00

Kconfig

lmb: rename to memblock

2010-07-14 17:14:00 +10:00

Kconfig.debug

…

kmemcheck.c

kmemcheck: Fix build errors due to missing slab.h

2010-03-30 22:02:32 +09:00

kmemleak-test.c

…

kmemleak.c

kmemleak: Fix typo in the comment

2010-08-08 21:57:23 +01:00

ksm.c

ksm: cleanup for mm_slots_hash

2010-08-09 20:45:03 -07:00

maccess.c

maccess,probe_kernel: Allow arch specific override probe_kernel_(read|write)

2010-01-07 11:58:36 -06:00

madvise.c

HWPOISON: Add a madvise() injector for soft page offlining

2009-12-16 12:20:00 +01:00

Makefile

lmb: rename to memblock

2010-07-14 17:14:00 +10:00

memblock.c

memblock: Fix wraparound in find_region()

2010-10-05 21:45:35 -07:00

memcontrol.c

memcg: convert to use zone_to_nid() from bare zone->zone_pgdat->node_id

2010-08-11 08:59:19 -07:00

memory_hotplug.c

mem-hotplug: fix potential race while building zonelist for new populated zone

2010-05-25 08:07:02 -07:00

memory-failure.c

Merge branch 'hwpoison' of git://git.kernel.org/pub/scm/linux/kernel/git/ak/linux-mce-2.6

2010-08-12 10:15:10 -07:00

memory.c

guard page for stacks that grow upwards

2010-08-24 12:13:20 -07:00

mempolicy.c

mempolicy: reduce stack size of migrate_pages()

2010-08-09 20:44:58 -07:00

mempool.c

…

migrate.c

mm: extend KSM refcounts to the anon_vma root

2010-08-09 20:44:55 -07:00

mincore.c

mincore: do nested page table walks

2010-05-25 08:06:58 -07:00

mlock.c

mm: make the mlock() stack guard page checks stricter

2010-08-21 08:49:50 -07:00

mm_init.c

…

mmap.c

guard page for stacks that grow upwards

2010-08-24 12:13:20 -07:00

mmu_context.c

exit: fix oops in sync_mm_rss

2010-03-24 16:31:21 -07:00

mmu_notifier.c

include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h

2010-03-30 22:02:32 +09:00

mmzone.c

…

mprotect.c

include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h

2010-03-30 22:02:32 +09:00

mremap.c

include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h

2010-03-30 22:02:32 +09:00

msync.c

sanitize vfs_fsync calling conventions

2010-05-21 18:31:21 -04:00

nommu.c

mm: make the vma list be doubly linked

2010-08-21 08:49:21 -07:00

oom_kill.c

oom: __task_cred() need rcu_read_lock()

2010-08-20 09:34:55 -07:00

page_alloc.c

Merge commit 'v2.6.36-rc3' into x86/memblock

2010-08-31 09:45:46 +02:00

page_cgroup.c

kmemleak: Annotate false positive in init_section_page_cgroup()

2010-07-19 11:54:14 +01:00

page_io.c

block: unify flags for struct bio and struct request

2010-08-07 18:20:39 +02:00

page_isolation.c

…

page-writeback.c

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client

2010-08-28 14:07:20 -07:00

pagewalk.c

pagemap: fix pfn calculation for hugepage

2010-04-07 08:38:04 -07:00

percpu_up.c

percpu: don't implicitly include slab.h from percpu.h

2010-03-30 22:02:32 +09:00

percpu-km.c

percpu: implement kernel memory based chunk allocation

2010-05-01 08:30:50 +02:00

percpu-vm.c

percpu: move vmalloc based chunk management into percpu-vm.c

2010-05-01 08:30:50 +02:00

percpu.c

percpu: allow limited allocation before slab is online

2010-06-27 18:50:00 +02:00

prio_tree.c

…

quicklist.c

include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h

2010-03-30 22:02:32 +09:00

readahead.c

readahead.c: fix comment

2010-05-25 08:07:00 -07:00

rmap.c

mm: fix hang on anon_vma->root->lock

2010-08-28 13:54:12 -07:00

shmem.c

shmem: put_super must percpu_counter_destroy

2010-08-17 18:33:11 -07:00

slab.c

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6

2010-08-22 10:08:52 -07:00

slob.c

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6

2010-08-06 11:44:08 -07:00

slub.c

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6

2010-08-06 11:44:08 -07:00

sparse-vmemmap.c

x86: Use memblock to replace early_res

2010-08-27 11:12:29 -07:00

sparse.c

sparsemem: on no vmemmap path put mem_map on node high too

2010-05-25 08:06:56 -07:00

swap_state.c

include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h

2010-03-30 22:02:32 +09:00

swap.c

mm: export lru_cache_add_*() to modules

2010-05-25 15:06:06 +02:00

swapfile.c

hibernation: freeze swap at hibernation

2010-08-09 20:45:04 -07:00

thrash.c

…

truncate.c

check ATTR_SIZE contraints in inode_change_ok

2010-08-09 16:47:39 -04:00

util.c

mm: use memdup_user

2010-08-09 20:44:54 -07:00

vmalloc.c

Merge branch 'stable/xen-swiotlb-0.8.6' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen

2010-08-12 09:09:41 -07:00

vmscan.c

memcg: remove nid and zid argument from mem_cgroup_soft_limit_reclaim()

2010-08-11 08:59:19 -07:00

vmstat.c

vmscan: kill prev_priority completely

2010-08-09 20:45:00 -07:00