Hugh Dickins de51257aa3 mm: fix ia64 crash when gcore reads gate area ... Debian's ia64 autobuilders have been seeing kernel freeze or reboot when running the gdb testsuite (Debian bug 588574): dannf bisected to 2.6.32 62eede62da "mm: ZERO_PAGE without PTE_SPECIAL"; and reproduced it with gdb's gcore on a simple target. I'd missed updating the gate_vma handling in __get_user_pages(): that happens to use vm_normal_page() (nowadays failing on the zero page), yet reported success even when it failed to get a page - boom when access_process_vm() tried to copy that to its intermediate buffer. Fix this, resisting cleanups: in particular, leave it for now reporting success when not asked to get any pages - very probably safe to change, but let's not risk it without testing exposure. Why did ia64 crash with 16kB pages, but succeed with 64kB pages? Because setup_gate() pads each 64kB of its gate area with zero pages. Reported-by: Andreas Barth <aba@not.so.argh.org> Bisected-by: dann frazier <dannf@debian.org> Signed-off-by: Hugh Dickins <hughd@google.com> Tested-by: dann frazier <dannf@dannf.org> Cc: stable@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2010-07-30 18:56:09 -07:00
..
Kconfig	lmb: rename to memblock	2010-07-14 17:14:00 +10:00
Kconfig.debug	trivial: improve help text for mm debug config options	2009-09-21 15:14:57 +02:00
Makefile	lmb: rename to memblock	2010-07-14 17:14:00 +10:00
backing-dev.c	writeback: simplify the write back thread queue	2010-07-06 08:59:53 +02:00
bootmem.c	x86,nobootmem: make alloc_bootmem_node fall back to other node when 32bit numa is used	2010-07-20 16:25:40 -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	dmapools: protect page_list walk in show_pools()	2009-06-30 18:56:00 -07:00
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.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse	2010-05-30 09:16:14 -07:00
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
fremap.c	mm: clean up mm_counter	2010-03-06 11:26:23 -08:00
highmem.c	highmem: remove unneeded #ifdef CONFIG_TRACE_IRQFLAGS_SUPPORT for debug_kmap_atomic()	2010-05-25 08:07:01 -07:00
hugetlb.c	cpuset,mm: fix no node to alloc memory when changing cpuset's mems	2010-05-25 08:06:57 -07:00
hwpoison-inject.c	HWPOISON: Don't do early filtering if filter is disabled	2009-12-16 12:20:01 +01:00
init-mm.c	…
internal.h	HWPOISON: add an interface to switch off/on all the page filters	2009-12-16 12:19:59 +01:00
kmemcheck.c	kmemcheck: Fix build errors due to missing slab.h	2010-03-30 22:02:32 +09:00
kmemleak-test.c	percpu: clean up percpu variable definitions	2009-06-24 15:13:48 +09:00
kmemleak.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
ksm.c	mm: migration: share the anon_vma ref counts between KSM and page migration	2010-05-25 08:06:58 -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
memblock.c	lmb: rename to memblock	2010-07-14 17:14:00 +10:00
memcontrol.c	memcg: fix wake up in oom wait queue	2010-06-29 15:29:30 -07:00
memory-failure.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
memory.c	mm: fix ia64 crash when gcore reads gate area	2010-07-30 18:56:09 -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
mempolicy.c	mempolicy: fix dangling reference to tmpfs superblock mpol	2010-06-29 15:29:31 -07:00
mempool.c	mm: remove broken 'kzalloc' mempool	2009-09-22 07:17:35 -07:00
migrate.c	memcg: fix mis-accounting of file mapped racy with migration	2010-05-27 09:12:44 -07:00
mincore.c	mincore: do nested page table walks	2010-05-25 08:06:58 -07:00
mlock.c	x86, perf, bts, mm: Delete the never used BTS-ptrace code	2010-03-26 11:33:55 +01:00
mm_init.c	…
mmap.c	mmap: check ->vm_ops before dereferencing	2010-04-27 08:26:51 -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	nommu: allow private mappings of read-only devices	2010-05-26 08:19:23 -07:00
oom_kill.c	memcg: make oom killer a no-op when no killable task can be found	2010-05-27 09:12:43 -07:00
page-writeback.c	writeback: remove writeback_inodes_wbc	2010-07-06 08:54:03 +02:00
page_alloc.c	x86,nobootmem: make alloc_bootmem_node fall back to other node when 32bit numa is used	2010-07-20 16:25:40 -07:00
page_cgroup.c	kmemleak: Annotate false positive in init_section_page_cgroup()	2010-07-19 11:54:14 +01:00
page_io.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
page_isolation.c	…
pagewalk.c	pagemap: fix pfn calculation for hugepage	2010-04-07 08:38:04 -07:00
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: fix first chunk match in per_cpu_ptr_to_phys()	2010-06-18 15:07:23 +02:00
percpu_up.c	percpu: don't implicitly include slab.h from percpu.h	2010-03-30 22:02:32 +09:00
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: migration: avoid race between shift_arg_pages() and rmap_walk() during migration by not migrating temporary stacks	2010-05-25 08:06:59 -07:00
shmem.c	fix truncate inode time modification breakage	2010-06-04 17:16:30 -04:00
slab.c	numa: slab: use numa_mem_id() for slab local memory node	2010-05-27 09:12:57 -07:00
slob.c	mm: Move ARCH_SLAB_MINALIGN and ARCH_KMALLOC_MINALIGN to <linux/slob_def.h>	2010-05-19 22:03:13 +03:00
slub.c	Merge branch 'slub/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6	2010-05-30 12:46:17 -07:00
sparse-vmemmap.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
sparse.c	sparsemem: on no vmemmap path put mem_map on node high too	2010-05-25 08:06:56 -07:00
swap.c	mm: export lru_cache_add_*() to modules	2010-05-25 15:06:06 +02:00
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
swapfile.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging-2.6	2010-05-21 15:26:46 -07:00
thrash.c	mm: pass mm to grab_swap_token	2009-06-23 12:50:05 -07:00
truncate.c	fs: introduce new truncate sequence	2010-05-27 22:15:33 -04:00
util.c	slab: Generify kernel pointer validation	2010-04-09 10:09:50 -07:00
vmalloc.c	mm: purge fragmented percpu vmap blocks	2010-02-02 12:50:47 -08:00
vmscan.c	mm/vmscan.c: fix mapping use after free	2010-07-20 16:25:40 -07:00
vmstat.c	mm: compaction: direct compact when a high-order allocation fails	2010-05-25 08:06:59 -07:00