84929801e1
Appended patch will setup compatibility mode TASK_SIZE properly. This will fix atleast three known bugs that can be encountered while running compatibility mode apps. a) A malicious 32bit app can have an elf section at 0xffffe000. During exec of this app, we will have a memory leak as insert_vm_struct() is not checking for return value in syscall32_setup_pages() and thus not freeing the vma allocated for the vsyscall page. And instead of exec failing (as it has addresses > TASK_SIZE), we were allowing it to succeed previously. b) With a 32bit app, hugetlb_get_unmapped_area/arch_get_unmapped_area may return addresses beyond 32bits, ultimately causing corruption because of wrap-around and resulting in SEGFAULT, instead of returning ENOMEM. c) 32bit app doing this below mmap will now fail. mmap((void *)(0xFFFFE000UL), 0x10000UL, PROT_READ|PROT_WRITE, MAP_FIXED|MAP_PRIVATE|MAP_ANON, 0, 0); Signed-off-by: Zou Nan hai <nanhai.zou@intel.com> Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Cc: Andi Kleen <ak@muc.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org> |
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| .. | ||
| 8253pit.h | ||
| a.out.h | ||
| acpi.h | ||
| agp.h | ||
| apic.h | ||
| apicdef.h | ||
| atomic.h | ||
| bitops.h | ||
| boot.h | ||
| bootsetup.h | ||
| bug.h | ||
| bugs.h | ||
| byteorder.h | ||
| cache.h | ||
| cacheflush.h | ||
| calling.h | ||
| checksum.h | ||
| compat.h | ||
| cpu.h | ||
| cpufeature.h | ||
| cputime.h | ||
| current.h | ||
| debugreg.h | ||
| delay.h | ||
| desc.h | ||
| div64.h | ||
| dma-mapping.h | ||
| dma.h | ||
| dwarf2.h | ||
| e820.h | ||
| elf.h | ||
| errno.h | ||
| fcntl.h | ||
| fixmap.h | ||
| floppy.h | ||
| fpu32.h | ||
| genapic.h | ||
| hardirq.h | ||
| hdreg.h | ||
| hpet.h | ||
| hw_irq.h | ||
| i387.h | ||
| ia32_unistd.h | ||
| ia32.h | ||
| ide.h | ||
| io_apic.h | ||
| io.h | ||
| ioctl.h | ||
| ioctls.h | ||
| ipcbuf.h | ||
| ipi.h | ||
| irq.h | ||
| kdebug.h | ||
| kmap_types.h | ||
| kprobes.h | ||
| ldt.h | ||
| linkage.h | ||
| local.h | ||
| mach_apic.h | ||
| mc146818rtc.h | ||
| mce.h | ||
| mman.h | ||
| mmsegment.h | ||
| mmu_context.h | ||
| mmu.h | ||
| mmx.h | ||
| mmzone.h | ||
| module.h | ||
| mpspec.h | ||
| msgbuf.h | ||
| msi.h | ||
| msr.h | ||
| mtrr.h | ||
| namei.h | ||
| nmi.h | ||
| node.h | ||
| numa.h | ||
| numnodes.h | ||
| page.h | ||
| param.h | ||
| parport.h | ||
| pci-direct.h | ||
| pci.h | ||
| pda.h | ||
| percpu.h | ||
| pgalloc.h | ||
| pgtable.h | ||
| poll.h | ||
| posix_types.h | ||
| prctl.h | ||
| processor.h | ||
| proto.h | ||
| ptrace.h | ||
| resource.h | ||
| rtc.h | ||
| rwlock.h | ||
| rwsem.h | ||
| scatterlist.h | ||
| seccomp.h | ||
| sections.h | ||
| segment.h | ||
| semaphore.h | ||
| sembuf.h | ||
| serial.h | ||
| setup.h | ||
| shmbuf.h | ||
| shmparam.h | ||
| sigcontext32.h | ||
| sigcontext.h | ||
| siginfo.h | ||
| signal.h | ||
| smp.h | ||
| socket.h | ||
| sockios.h | ||
| spinlock.h | ||
| stat.h | ||
| statfs.h | ||
| string.h | ||
| suspend.h | ||
| swiotlb.h | ||
| system.h | ||
| termbits.h | ||
| termios.h | ||
| thread_info.h | ||
| timex.h | ||
| tlb.h | ||
| tlbflush.h | ||
| topology.h | ||
| types.h | ||
| uaccess.h | ||
| ucontext.h | ||
| unaligned.h | ||
| unistd.h | ||
| user32.h | ||
| user.h | ||
| vga.h | ||
| vsyscall32.h | ||
| vsyscall.h | ||
| xor.h | ||