1. 03 2月, 2009 3 次提交
  2. 01 2月, 2009 2 次提交
    • M
      Fix memory corruption in console selection · 878b8619
      Mikulas Patocka 提交于
      Fix an off-by-two memory error in console selection.
      
      The loop below goes from sel_start to sel_end (inclusive), so it writes
      one more character.  This one more character was added to the allocated
      size (+1), but it was not multiplied by an UTF-8 multiplier.
      
      This patch fixes a memory corruption when UTF-8 console is used and the
      user selects a few characters, all of them 3-byte in UTF-8 (for example
      a frame line).
      
      When memory redzones are enabled, a redzone corruption is reported.
      When they are not enabled, trashing of random memory occurs.
      Signed-off-by: NMikulas Patocka <mpatocka@redhat.com>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      878b8619
    • L
      Stop playing silly games with the VM_ACCOUNT flag · fc8744ad
      Linus Torvalds 提交于
      The mmap_region() code would temporarily set the VM_ACCOUNT flag for
      anonymous shared mappings just to inform shmem_zero_setup() that it
      should enable accounting for the resulting shm object.  It would then
      clear the flag after calling ->mmap (for the /dev/zero case) or doing
      shmem_zero_setup() (for the MAP_ANON case).
      
      This just resulted in vma merge issues, but also made for just
      unnecessary confusion.  Use the already-existing VM_NORESERVE flag for
      this instead, and let shmem_{zero|file}_setup() just figure it out from
      that.
      
      This also happens to make it obvious that the new DRI2 GEM layer uses a
      non-reserving backing store for its object allocation - which is quite
      possibly not intentional.  But since I didn't want to change semantics
      in this patch, I left it alone, and just updated the caller to use the
      new flag semantics.
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      fc8744ad
  3. 31 1月, 2009 18 次提交
  4. 30 1月, 2009 17 次提交