diff options
| author | Jann Horn <jannh@google.com> | 2020-08-06 18:53:59 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-09-03 18:21:35 +0200 |
| commit | e8b8ae7ce32e17a5c29f0289e9e2a39c7dcaa1b8 (patch) | |
| tree | 15d2cc1ef2388442d609006fe25e026491576c05 /drivers/android | |
| parent | Merge 5.9-rc3 into char-misc-next (diff) | |
| download | linux-e8b8ae7ce32e17a5c29f0289e9e2a39c7dcaa1b8.tar.xz linux-e8b8ae7ce32e17a5c29f0289e9e2a39c7dcaa1b8.zip | |
binder: Remove bogus warning on failed same-process transaction
While binder transactions with the same binder_proc as sender and recipient
are forbidden, transactions with the same task_struct as sender and
recipient are possible (even though currently there is a weird check in
binder_transaction() that rejects them in the target==0 case).
Therefore, task_struct identities can't be used to distinguish whether
the caller is running in the context of the sender or the recipient.
Since I see no easy way to make this WARN_ON() useful and correct, let's
just remove it.
Fixes: 44d8047f1d87 ("binder: use standard functions to allocate fds")
Reported-by: syzbot+e113a0b970b7b3f394ba@syzkaller.appspotmail.com
Acked-by: Christian Brauner <christian.brauner@ubuntu.com>
Acked-by: Todd Kjos <tkjos@google.com>
Signed-off-by: Jann Horn <jannh@google.com>
Link: https://lore.kernel.org/r/20200806165359.2381483-1-jannh@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/android')
| -rw-r--r-- | drivers/android/binder.c | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/drivers/android/binder.c b/drivers/android/binder.c index f936530a19b0..5b0376344dbe 100644 --- a/drivers/android/binder.c +++ b/drivers/android/binder.c @@ -2344,8 +2344,6 @@ static void binder_transaction_buffer_release(struct binder_proc *proc, * file is done when the transaction is torn * down. */ - WARN_ON(failed_at && - proc->tsk == current->group_leader); } break; case BINDER_TYPE_PTR: /* |