Revert "android: binder: Sanity check at binder ioctl"
authorTodd Kjos <tkjos@android.com>
Wed, 5 Jul 2017 20:46:01 +0000 (13:46 -0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Mon, 17 Jul 2017 12:44:19 +0000 (14:44 +0200)
commita2b18708ee14baec4ef9c0fba96070bba14d0081
tree7dc7480befed459daefbaba05ddc05df8e8fe459
parent5771a8c08880cdca3bfb4a3fc6d309d6bba20877
Revert "android: binder: Sanity check at binder ioctl"

This reverts commit a906d6931f3ccaf7de805643190765ddd7378e27.

The patch introduced a race in the binder driver. An attempt to fix the
race was submitted in "[PATCH v2] android: binder: fix dangling pointer
comparison", however the conclusion in the discussion for that patch
was that the original patch should be reverted.

The reversion is being done as part of the fine-grained locking
patchset since the patch would need to be refactored when
proc->vmm_vm_mm is removed from struct binder_proc and added
in the binder allocator.

Signed-off-by: Todd Kjos <tkjos@google.com>
Cc: stable <stable@vger.kernel.org> # 4.6+
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/android/binder.c