diff options
| author | Liam Howlett <liam.howlett@oracle.com> | 2022-08-10 16:02:25 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-08-18 16:31:02 +0200 |
| commit | d6f35446d0769a98e9d761593d267cdd24f09ecd (patch) | |
| tree | bd7a0bd371d9087d9022bb7fa7af255f8d9ba21c /drivers/mux | |
| parent | a0e44c64b6061dda7e00b7c458e4523e2331b739 (diff) | |
binder_alloc: Add missing mmap_lock calls when using the VMA
Take the mmap_read_lock() when using the VMA in
binder_alloc_print_pages() and when checking for a VMA in
binder_alloc_new_buf_locked().
It is worth noting binder_alloc_new_buf_locked() drops the VMA read lock
after it verifies a VMA exists, but may be taken again deeper in the
call stack, if necessary.
Fixes: a43cfc87caaf (android: binder: stop saving a pointer to the VMA)
Cc: stable <stable@kernel.org>
Reported-by: Ondrej Mosnacek <omosnace@redhat.com>
Reported-by: syzbot+a7b60a176ec13cafb793@syzkaller.appspotmail.com
Tested-by: Ondrej Mosnacek <omosnace@redhat.com>
Acked-by: Carlos Llamas <cmllamas@google.com>
Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Link: https://lore.kernel.org/r/20220810160209.1630707-1-Liam.Howlett@oracle.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/mux')
0 files changed, 0 insertions, 0 deletions