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Jens Axboe 51a4cc112c io_uring: defer file table grabbing request cleanup for locked requests
If we're in the error path failing links and we have a link that has
grabbed a reference to the fs_struct, then we cannot safely drop our
reference to the table if we already hold the completion lock. This
adds a hardirq dependency to the fs_struct->lock, which it currently
doesn't have.

Defer the final cleanup and free of such requests to avoid adding this
dependency.

Reported-by: syzbot+ef4b654b49ed7ff049bf@syzkaller.appspotmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-08-10 15:19:25 -06:00
arch The main changes in this cycle were: 2020-08-03 14:58:38 -07:00
block
certs
crypto
Documentation The main changes in this cycle were: 2020-08-03 14:58:38 -07:00
drivers The main changes in this cycle were: 2020-08-03 14:58:38 -07:00
fs io_uring: defer file table grabbing request cleanup for locked requests 2020-08-10 15:19:25 -06:00
include The main changes in this cycle were: 2020-08-03 14:58:38 -07:00
init
ipc
kernel The main changes in this cycle were: 2020-08-03 14:58:38 -07:00
lib The main changes in this cycle were: 2020-08-03 14:58:38 -07:00
LICENSES
mm These are the latest RCU bits for v5.9: 2020-08-03 14:31:33 -07:00
net The main changes in this cycle were: 2020-08-03 14:58:38 -07:00
samples
scripts These were the main changes in this cycle: 2020-08-03 14:39:35 -07:00
security
sound
tools Misc updates: 2020-08-03 14:45:33 -07:00
usr
virt
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS These were the main changes in this cycle: 2020-08-03 14:39:35 -07:00
Makefile
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.