Hugh Dickins 705e87c0c3 [PATCH] mm: pte_offset_map_lock loops ...

Convert those common loops using page_table_lock on the outside and
pte_offset_map within to use just pte_offset_map_lock within instead.

These all hold mmap_sem (some exclusively, some not), so at no level can a
page table be whipped away from beneath them.  But whereas pte_alloc loops
tested with the "atomic" pmd_present, these loops are testing with pmd_none,
which on i386 PAE tests both lower and upper halves.

That's now unsafe, so add a cast into pmd_none to test only the vital lower
half: we lose a little sensitivity to a corrupt middle directory, but not
enough to worry about.  It appears that i386 and UML were the only
architectures vulnerable in this way, and pgd and pud no problem.

Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

2005-10-29 21:40:40 -07:00

..

a.out.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

apic.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

archparam-i386.h

[PATCH] uml: s390 preparation, elf.h

2005-05-05 16:36:37 -07:00

archparam-ppc.h

[PATCH] uml: s390 preparation, elf.h

2005-05-05 16:36:37 -07:00

archparam-x86_64.h

[PATCH] uml: s390 preparation, elf.h

2005-05-05 16:36:37 -07:00

atomic.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

auxvec.h

[PATCH] auxiliary vector cleanups

2005-09-07 16:57:21 -07:00

bitops.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

boot.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

bug.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

bugs.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

byteorder.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

cache.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

cacheflush.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

calling.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

checksum.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

cobalt.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

common.lds.S

[PATCH] uml: fix oops related to exception table

2005-05-01 08:58:53 -07:00

cpufeature.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

cputime.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

current.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

delay.h

[PATCH] uml: s390 preparation, delay moved to arch

2005-05-05 16:36:38 -07:00

desc.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

div64.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

dma-mapping.h

[PATCH] gfp_t: dma-mapping (simple cases)

2005-10-28 08:16:49 -07:00

dma.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

dwarf2.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

elf-i386.h

[PATCH] uml: small fixes left over from rc4

2005-05-20 15:48:17 -07:00

elf-ppc.h

[PATCH] uml: s390 preparation, elf.h

2005-05-05 16:36:37 -07:00

elf-x86_64.h

[PATCH] uml: small fixes left over from rc4

2005-05-20 15:48:17 -07:00

emergency-restart.h

[PATCH] Add emergency_restart()

2005-07-26 14:35:41 -07:00

errno.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

fcntl.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

fixmap.h

[PATCH] uml: s390 preparation, elf.h

2005-05-05 16:36:37 -07:00

floppy.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

futex.h

[PATCH] uml: adapt asm/futex.h to our arch

2005-09-21 16:16:29 -07:00

hardirq.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

highmem.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

hw_irq.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

ide.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

io.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

ioctl.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

ioctls.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

ipc.h

[PATCH] uml: obvious compile fixes for x86-64 Subarch and x86 regression fixes

2005-05-05 16:36:32 -07:00

ipcbuf.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

irq_vectors.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

irq.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

keyboard.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

kmap_types.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

ldt.h

[PATCH] uml: consolidate modify_ldt

2005-07-14 09:00:24 -07:00

linkage.h

[PATCH] uml: s390 preparation, linkage.h inherited from host

2005-05-05 16:36:38 -07:00

local.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

locks.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

mca_dma.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

mman.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

mmu_context.h

[PATCH] uml: fixes performance regression in activate_mm and thus exec()

2005-09-05 00:06:21 -07:00

mmu.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

module-generic.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

module-i386.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

module-x86_64.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

msgbuf.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

mtrr.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

namei.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

page_offset.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

page.h

[PATCH] gfp_t: remaining bits of arch/*

2005-10-28 08:16:51 -07:00

param.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

pci.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

pda.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

percpu.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

pgalloc.h

[PATCH] uml: fix x86_64 page leak

2005-09-05 00:06:24 -07:00

pgtable-2level.h

[PATCH] uml: merge duplicated page table code

2005-09-05 00:06:22 -07:00

pgtable-3level.h

[PATCH] uml: fix x86_64 page leak

2005-09-05 00:06:24 -07:00

pgtable.h

[PATCH] mm: pte_offset_map_lock loops

2005-10-29 21:40:40 -07:00

poll.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

posix_types.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

prctl.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

processor-generic.h

[PATCH] uml: Fix sysrq-r support for skas mode

2005-10-04 13:22:01 -07:00

processor-i386.h

[PATCH] uml: Fix sysrq-r support for skas mode

2005-10-04 13:22:01 -07:00

processor-ppc.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

processor-x86_64.h

[PATCH] uml: Fix sysrq-r support for skas mode

2005-10-04 13:22:01 -07:00

ptrace-generic.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

ptrace-i386.h

[PATCH] uml: add profile_pc for i386

2005-06-25 16:24:36 -07:00

ptrace-x86_64.h

[AUDIT] Update UML audit-syscall-{entry,exit} calls to new prototypes

2005-05-03 07:54:51 +01:00

resource.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

rwlock.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

rwsem.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

scatterlist.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

sections.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

segment.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

semaphore.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

sembuf.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

serial.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

setup.h

[PATCH] uml: command line handling cleanup

2005-05-06 22:09:29 -07:00

shmbuf.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

shmparam.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

sigcontext-generic.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

sigcontext-i386.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

sigcontext-ppc.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

sigcontext-x86_64.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

siginfo.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

signal.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

smp.h

[PATCH] smp_processor_id() cleanup

2005-06-21 18:46:13 -07:00

socket.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

sockios.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

spinlock_types.h

[PATCH] uml spinlock breakage

2005-09-10 16:50:01 -07:00

spinlock.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

stat.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

statfs.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

string.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

suspend.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

system-generic.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

system-i386.h

[PATCH] uml: UML/i386 cmpxchg fix

2005-09-17 11:50:01 -07:00

system-ppc.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

system-x86_64.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

termbits.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

termios.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

thread_info.h

[PATCH] streamline preempt_count type across archs

2005-06-23 09:45:19 -07:00

timex.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

tlb.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

tlbflush.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

topology.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

types.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

uaccess.h

[PATCH] uml get_user() NULL noise removal

2005-09-30 08:42:24 -07:00

ucontext.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

unaligned.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

unistd.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

user.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

vga.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

vm86.h

[PATCH] uml: vm86 compile fix

2005-07-28 21:46:03 -07:00

vm-flags-i386.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

vm-flags-x86_64.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

xor.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00