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Filename Latest commit message Latest commit date
Maxime Ripard e29126678f drm/vc4: hvs: Fix buffer overflow with the dlist handling 
[ Upstream commit facd93f4285c405f9a91b05166147cb39e860666 ]

Commit 0a038c1c29 ("drm/vc4: Move LBM creation out of
vc4_plane_mode_set()") changed the LBM allocation logic from first
allocating the LBM memory for the plane to running mode_set,
adding a gap in the LBM, and then running the dlist allocation filling
that gap.

The gap was introduced by incrementing the dlist array index, but was
never checking whether or not we were over the array length, leading
eventually to memory corruptions if we ever crossed this limit.

vc4_dlist_write had that logic though, and was reallocating a larger
dlist array when reaching the end of the buffer. Let's share the logic
between both functions.

Cc: Boris Brezillon <boris.brezillon@collabora.com>
Cc: Eric Anholt <eric@anholt.net>
Fixes: 0a038c1c29 ("drm/vc4: Move LBM creation out of vc4_plane_mode_set()")
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210129160647.128373-1-maxime@cerno.tech
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-02-17 10:35:16 +01:00
arch vmlinux.lds.h: Create section for protection against instrumentation 2021-02-17 10:35:16 +01:00
block bfq-iosched: Revert "bfq: Fix computation of shallow depth" 2021-02-17 10:35:16 +01:00
certs
crypto crypto: asym_tpm: correct zero out potential secrets 2021-01-12 20:16:17 +01:00
Documentation KVM: Forbid the use of tagged userspace addresses for memslots 2021-02-03 23:25:57 +01:00
drivers drm/vc4: hvs: Fix buffer overflow with the dlist handling 2021-02-17 10:35:16 +01:00
fs ovl: skip getxattr of security labels 2021-02-17 10:35:15 +01:00
include vmlinux.lds.h: Create section for protection against instrumentation 2021-02-17 10:35:16 +01:00
init fgraph: Initialize tracing_graph_pause at task creation 2021-02-10 09:25:29 +01:00
ipc
kernel cgroup: fix psi monitor for root cgroup 2021-02-17 10:35:14 +01:00
lib lib/raid6: Let $(UNROLL) rules work with macOS userland 2021-01-19 18:26:15 +01:00
LICENSES
mm mm: thp: fix MADV_REMOVE deadlock on shmem THP 2021-02-10 09:25:31 +01:00
net SUNRPC: Handle 0 length opaque XDR object data properly 2021-02-13 13:52:56 +01:00
samples samples: bpf: Fix lwt_len_hist reusing previous BPF map 2020-12-30 11:51:12 +01:00
scripts vmlinux.lds.h: Create section for protection against instrumentation 2021-02-17 10:35:16 +01:00
security cap: fix conversions on getxattr 2021-02-17 10:35:15 +01:00
sound ASoC: ak4458: correct reset polarity 2021-02-13 13:52:55 +01:00
tools objtool: Don't fail on missing symbol table 2021-02-07 15:35:49 +01:00
usr
virt KVM: Forbid the use of tagged userspace addresses for memslots 2021-02-03 23:25:57 +01:00
.clang-format
.cocciconfig
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Makefile Linux 5.4.98 2021-02-13 13:52:58 +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.