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Eric Biggers a880b28a71 binder: use wake_up_pollfree() 
wake_up_poll() uses nr_exclusive=1, so it's not guaranteed to wake up
all exclusive waiters.  Yet, POLLFREE *must* wake up all waiters.  epoll
and aio poll are fortunately not affected by this, but it's very
fragile.  Thus, the new function wake_up_pollfree() has been introduced.

Convert binder to use wake_up_pollfree().

Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Fixes: f5cb779ba1 ("ANDROID: binder: remove waitqueue when thread exits.")
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20211209010455.42744-3-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@google.com>
 		2021-12-09 10:49:56 -08:00
..
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
binder.c binder: use wake_up_pollfree() 2021-12-09 10:49:56 -08:00
binder_alloc.c binder: tell userspace to dump current backtrace when detected oneway spamming 2021-04-10 10:52:04 +02:00
binder_alloc.h binder: tell userspace to dump current backtrace when detected oneway spamming 2021-04-10 10:52:04 +02:00
binder_alloc_selftest.c binder: print warnings when detecting oneway spamming. 2020-09-03 18:24:41 +02:00
binder_internal.h selinux/stable-5.16 PR 20211101 2021-11-01 21:06:18 -07:00
binder_trace.h binder: add trace at free transaction. 2020-11-11 08:20:44 +01:00
binderfs.c binderfs: add support for feature files 2021-07-21 13:46:36 +02:00