alistair23-linux/drivers/android
Jann Horn e8b8ae7ce3 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: 44d8047f1d ("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>
2020-09-03 18:21:35 +02:00
..
binder.c binder: Remove bogus warning on failed same-process transaction 2020-09-03 18:21:35 +02:00
binder_alloc.c drivers: android: Fix a variable declaration coding style issue 2020-07-29 17:04:40 +02:00
binder_alloc.h binder: return errors from buffer copy functions 2019-07-01 08:42:47 +02:00
binder_alloc_selftest.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 282 2019-06-05 17:36:37 +02:00
binder_internal.h binder: prevent UAF for binderfs devices II 2020-03-03 19:58:37 +01:00
binder_trace.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 282 2019-06-05 17:36:37 +02:00
binderfs.c drivers: android: Fix the SPDX comment style 2020-07-29 17:05:44 +02:00
Kconfig treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
Makefile treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00