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Filename Latest commit message Latest commit date
Eric Biggers aac8151624 signalfd: use wake_up_pollfree() 
commit 9537bae0da1f8d1e2361ab6d0479e8af7824e160 upstream.

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 signalfd to use wake_up_pollfree().

Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Fixes: d80e731eca ("epoll: introduce POLLFREE to flush ->signalfd_wqh before kfree()")
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20211209010455.42744-4-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-12-14 14:49:02 +01:00
arch x86/sme: Explicitly map new EFI memmap table as encrypted 2021-12-14 14:49:02 +01:00
block
certs
crypto crypto: pcrypt - Delay write to padata->info 2021-11-17 09:48:40 +01:00
Documentation netfilter: ipvs: Fix reuse connection if RS weight is 0 2021-12-01 09:23:31 +01:00
drivers binder: use wake_up_pollfree() 2021-12-14 14:49:02 +01:00
fs signalfd: use wake_up_pollfree() 2021-12-14 14:49:02 +01:00
include wait: add wake_up_pollfree() 2021-12-14 14:49:02 +01:00
init
ipc shm: extend forced shm destroy to support objects from several IPC nses 2021-12-01 09:23:35 +01:00
kernel wait: add wake_up_pollfree() 2021-12-14 14:49:02 +01:00
lib siphash: use _unaligned version by default 2021-12-08 09:01:12 +01:00
LICENSES
mm mm: bdi: initialize bdi_min_ratio when bdi is unregistered 2021-12-14 14:49:00 +01:00
net udp: using datalen to cap max gso segments 2021-12-14 14:49:00 +01:00
samples
scripts
security fortify: Explicitly disable Clang support 2021-11-21 13:38:50 +01:00
sound ALSA: pcm: oss: Handle missing errors in snd_pcm_oss_change_params*() 2021-12-14 14:49:01 +01:00
tools bpf: Fix the off-by-two error in range markings 2021-12-14 14:48:59 +01:00
usr
virt
.clang-format
.cocciconfig
.get_maintainer.ignore
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Makefile Linux 5.4.164 2021-12-08 09:01:15 +01:00
README

README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.