Martin Schwidefsky 0d01792300 [S390] pud_present/pmd_present bug. ... Git commit 3610cce87a (yeah my own :-/) introduced a bug in regard to pud/pmd table entries. If the address of the page table refered to by a pud/pmd value happens to have zeroes in the lower 32 bits, pud_present and pmd_present return false. The obvious effect is that this triggers the BUG_ON in exit_mmap because some ptes will not get released on process end. Worse is that the next fault for memory covered by that pud/pmd will allocate another pmd/pte table and populate the pud/pmd entry. The old page table entries hanging below this entry are lost! The fix is simple, properly check against 0. The check is added for pud_none/pmd_none as well even if these two functions work because the invalid bit is in the lower 32 bits. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>		2007-12-17 16:25:56 +01:00
..
a.out.h	arch: personality independent stack top	2007-07-19 10:04:45 -07:00
appldata.h
atomic.h	[S390] Change atomic_read/set to inline functions with barrier semantics.	2007-08-22 13:51:49 +02:00
auxvec.h
bitops.h	forbid asm/bitops.h direct inclusion	2007-10-19 11:53:41 -07:00
bug.h	Fix WARN_ON() on bitfield ops for all other archs	2007-08-01 20:45:38 -07:00
bugs.h
byteorder.h
cache.h	[S390] Get rid of ARCH_KMALLOC_MINALIGN.	2007-10-12 16:13:07 +02:00
cacheflush.h
ccwdev.h	[S390] cio: Introduce ccw_bus_type.shutdown.	2007-10-12 16:13:01 +02:00
ccwgroup.h	[S390] cio: Add docbook comments.	2007-10-12 16:12:59 +02:00
checksum.h
chpid.h
cio.h	[S390] cio: Add docbook comments.	2007-10-12 16:12:59 +02:00
cmb.h	[S390] cio: Kerneldoc comments for cmf.	2007-10-12 16:12:59 +02:00
compat.h	Introduce compat_u64 and compat_s64 types	2007-07-16 09:05:48 -07:00
cpcmd.h
cpu.h	[S390] Add per-cpu idle time / idle count sysfs attributes.	2007-10-22 12:52:47 +02:00
cputime.h
current.h
dasd.h
debug.h
delay.h
device.h
diag.h	[S390] vmur: fix diag14 exceptions with addresses > 2GB.	2007-08-22 13:51:47 +02:00
div64.h
dma.h
ebcdic.h
elf.h
emergency-restart.h
errno.h
etr.h
extmem.h
fb.h	fbdev: detect primary display device	2007-07-17 10:23:11 -07:00
fcntl.h
futex.h
hardirq.h
idals.h
io.h
ioctl.h
ioctls.h
ipcbuf.h
ipl.h
irq_regs.h
irq.h
irqflags.h
Kbuild
kdebug.h	x86: optimize page faults like all other achitectures and kill notifier cruft	2007-10-16 09:42:50 -07:00
kexec.h
kmap_types.h
kprobes.h	kprobes: support kretprobe blacklist	2007-10-16 09:43:10 -07:00
linkage.h
local.h
lowcore.h
mathemu.h
mman.h
mmu_context.h	[S390] Cleanup page table definitions.	2007-10-22 12:52:49 +02:00
mmu.h
module.h
monwriter.h
msgbuf.h
mutex.h
namei.h
page.h	[S390] 4level-fixup cleanup	2007-10-22 12:52:49 +02:00
param.h
pci.h
percpu.h	define new percpu interface for shared data	2007-07-19 10:04:44 -07:00
pgalloc.h	[S390] 4level-fixup cleanup	2007-10-22 12:52:49 +02:00
pgtable.h	[S390] pud_present/pmd_present bug.	2007-12-17 16:25:56 +01:00
poll.h
posix_types.h
processor.h	[S390] Cleanup page table definitions.	2007-10-22 12:52:49 +02:00
ptrace.h
qdio.h
qeth.h
reset.h
resource.h
rwsem.h
s390_ext.h	[S390] remove packed attribute from ext_int_info_t.	2007-10-12 16:13:07 +02:00
s390_rdev.h
scatterlist.h	Add CONFIG_DEBUG_SG sg validation	2007-10-22 21:20:03 +02:00
sclp.h	[S390] sclp: Test facility list before executing a service call.	2007-07-10 11:24:43 +02:00
sections.h
segment.h
semaphore.h	kill DECLARE_MUTEX_LOCKED	2007-10-17 08:42:47 -07:00
sembuf.h
setup.h
sfp-machine.h	[S390] Bogomips calculation for 64 bit.	2007-07-10 11:24:47 +02:00
sfp-util.h	[S390] Bogomips calculation for 64 bit.	2007-07-10 11:24:47 +02:00
shmbuf.h
shmparam.h
sigcontext.h
siginfo.h
signal.h
sigp.h
smp.h	[S390] Convert to smp_call_function_single.	2007-07-27 12:29:17 +02:00
socket.h
sockios.h
spinlock_types.h
spinlock.h
stat.h
statfs.h
string.h
suspend.h
system.h	[S390] Fix irq tracing and lockdep_sys_exit calls.	2007-11-20 11:13:45 +01:00
tape390.h
termbits.h	lots-of-architectures: enable arbitary speed tty support	2007-07-10 17:51:13 -07:00
termios.h
thread_info.h
timer.h
timex.h
tlb.h	[S390] 4level-fixup cleanup	2007-10-22 12:52:49 +02:00
tlbflush.h	[S390] Cleanup page table definitions.	2007-10-22 12:52:49 +02:00
todclk.h
topology.h
types.h	remove strict ansi check from __u64 in asm/types.h	2007-10-17 08:42:53 -07:00
uaccess.h
ucontext.h
unaligned.h
unistd.h	[S390] Wire up sys_fallocate.	2007-07-27 12:29:19 +02:00
user.h
vtoc.h
xor.h
zcrypt.h	[S390] zcrypt: remove duplicated struct CPRBX definition	2007-10-12 16:13:04 +02:00