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Filename Latest commit message Latest commit date
Eric Biggers d3d648163a ext4: fix error handling in ext4_end_enable_verity() 
commit f053cf7aa66cd9d592b0fc967f4d887c2abff1b7 upstream.

ext4 didn't properly clean up if verity failed to be enabled on a file:

- It left verity metadata (pages past EOF) in the page cache, which
  would be exposed to userspace if the file was later extended.

- It didn't truncate the verity metadata at all (either from cache or
  from disk) if an error occurred while setting the verity bit.

Fix these bugs by adding a call to truncate_inode_pages() and ensuring
that we truncate the verity metadata (both from cache and from disk) in
all error paths.  Also rework the code to cleanly separate the success
path from the error paths, which makes it much easier to understand.

Reported-by: Yunlei He <heyunlei@hihonor.com>
Fixes: c93d8f8858 ("ext4: add basic fs-verity support")
Cc: stable@vger.kernel.org # v5.4+
Signed-off-by: Eric Biggers <ebiggers@google.com>
Link: https://lore.kernel.org/r/20210302200420.137977-2-ebiggers@kernel.org
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-05-26 12:05:21 +02:00
arch openrisc: Fix a memory leak 2021-05-26 12:05:14 +02:00
block blk-mq: Swap two calls in blk_mq_exit_queue() 2021-05-19 10:08:30 +02:00
certs
crypto
Documentation tweewide: Fix most Shebang lines 2021-05-22 11:38:30 +02:00
drivers nvme-multipath: fix double initialization of ANA state 2021-05-26 12:05:20 +02:00
fs ext4: fix error handling in ext4_end_enable_verity() 2021-05-26 12:05:21 +02:00
include vt: Fix character height handling with VT_RESIZEX 2021-05-26 12:05:20 +02:00
init
ipc
kernel locking/mutex: clear MUTEX_FLAGS if wait_list is empty due to signal 2021-05-26 12:05:15 +02:00
lib lib: stackdepot: turn depot_lock spinlock to raw_spinlock 2021-05-22 11:38:30 +02:00
LICENSES
mm mm/hugetlb: fix F_SEAL_FUTURE_WRITE 2021-05-19 10:08:29 +02:00
net ipv6: remove extra dev_hold() for fallback tunnels 2021-05-22 11:38:30 +02:00
samples
scripts scripts: switch explicitly to Python 3 2021-05-22 11:38:30 +02:00
security
sound ALSA: hda/realtek: Add fixup for HP Spectre x360 15-df0xxx 2021-05-26 12:05:17 +02:00
tools tweewide: Fix most Shebang lines 2021-05-22 11:38:30 +02:00
usr
virt KVM: arm64: Initialize VCPU mdcr_el2 before loading it 2021-05-22 11:38:30 +02:00
.clang-format
.cocciconfig
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COPYING
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MAINTAINERS
Makefile Linux 5.4.121 2021-05-22 11:38:30 +02:00
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.