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Filename Latest commit message Latest commit date
Andreas Gruenbacher 2efb81b22d iov_iter: Fix iov_iter_get_pages{,_alloc} page fault return value
[ Upstream commit 814a66741b9ffb5e1ba119e368b178edb0b7322d ]

Both iov_iter_get_pages and iov_iter_get_pages_alloc return the number
of bytes of the iovec they could get the pages for.  When they cannot
get any pages, they're supposed to return 0, but when the start of the
iovec isn't page aligned, the calculation goes wrong and they return a
negative value.  Fix both functions.

In addition, change iov_iter_get_pages_alloc to return NULL in that case
to prevent resource leaks.

Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-11-17 09:48:30 +01:00
arch ia64: don't do IA64_CMPXCHG_DEBUG without CONFIG_PRINTK 2021-11-17 09:48:29 +01:00
block Revert "block, bfq: honor already-setup queue merges" 2021-10-06 15:42:34 +02:00
certs certs: Trigger creation of RSA module signing key if it's not an RSA key 2021-09-15 09:47:29 +02:00
crypto crypto: shash - avoid comparing pointers to exported functions under CFI 2021-07-14 16:53:13 +02:00
Documentation xen/balloon: add late_initcall_sync() for initial ballooning done 2021-11-17 09:48:25 +01:00
drivers ath: dfs_pattern_detector: Fix possible null-pointer dereference in channel_detector_create() 2021-11-17 09:48:30 +01:00
fs tracefs: Have tracefs directories not set OTH permission bits by default 2021-11-17 09:48:30 +01:00
include net: sched: update default qdisc visibility after Tx queue cnt changes 2021-11-17 09:48:28 +01:00
init kbuild: add CONFIG_LD_IS_LLD 2021-06-30 08:47:44 -04:00
ipc
kernel locking/lockdep: Avoid RCU-induced noinstr fail 2021-11-17 09:48:28 +01:00
lib iov_iter: Fix iov_iter_get_pages{,_alloc} page fault return value 2021-11-17 09:48:30 +01:00
LICENSES
mm mm, slub: fix potential memoryleak in kmem_cache_open() 2021-10-27 09:54:28 +02:00
net net-sysfs: try not to restart the syscall if it will fail eventually 2021-11-17 09:48:30 +01:00
samples samples: bpf: Fix tracex7 error raised on the missing argument 2021-09-22 12:26:30 +02:00
scripts gcc-plugins/structleak: add makefile var for disabling structleak 2021-10-27 09:54:28 +02:00
security smackfs: Fix use-after-free in netlbl_catmap_walk() 2021-11-17 09:48:28 +01:00
sound ALSA: mixer: fix deadlock in snd_mixer_oss_set_volume 2021-11-17 09:48:25 +01:00
tools perf script: Check session->header.env.arch before using it 2021-11-02 19:46:15 +01:00
usr
virt KVM: do not shrink halt_poll_ns below grow_start 2021-10-09 14:39:50 +02:00
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Makefile Linux 5.4.159 2021-11-12 14:43:05 +01:00
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.