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Kumar Kartikeya Dwivedi 99251305c2 bpf: Fix kfunc callback register type handling 
[ Upstream commit 06d686f771 ]

The kfunc code to handle KF_ARG_PTR_TO_CALLBACK does not check the reg
type before using reg->subprogno. This can accidently permit invalid
pointers from being passed into callback helpers (e.g. silently from
different paths). Likewise, reg->subprogno from the per-register type
union may not be meaningful either. We need to reject any other type
except PTR_TO_FUNC.

Acked-by: Dave Marchevsky <davemarchevsky@fb.com>
Fixes: 5d92ddc3de ("bpf: Add callback validation to kfunc verifier logic")
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/r/20230912233214.1518551-14-memxor@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:58:56 +01:00
arch bpf, x64: Fix tailcall infinite loop 2023-11-20 11:58:55 +01:00
block blk-throttle: check for overflow in calculate_bytes_allowed 2023-10-20 18:38:17 -06:00
certs
crypto KEYS: asymmetric: Fix sign/verify on pkcs1pad without a hash 2023-10-18 12:27:10 +08:00
Documentation x86/srso: Fix vulnerability reporting for missing microcode 2023-11-20 11:58:52 +01:00
drivers udp: annotate data-races around udp->encap_type 2023-11-20 11:58:56 +01:00
fs pstore/platform: Add check for kstrdup 2023-11-20 11:58:53 +01:00
include udplite: fix various data-races 2023-11-20 11:58:56 +01:00
init
io_uring assorted fixes all over the place 2023-10-27 16:44:58 -10:00
ipc
kernel bpf: Fix kfunc callback register type handling 2023-11-20 11:58:56 +01:00
lib maple_tree: add GFP_KERNEL to allocations in mas_expected_entries() 2023-10-18 12:12:41 -07:00
LICENSES
mm vfs: fix readahead(2) on block devices 2023-11-20 11:58:52 +01:00
net tcp: call tcp_try_undo_recovery when an RTOd TFO SYNACK is ACKed 2023-11-20 11:58:56 +01:00
rust rust: docs: fix logo replacement 2023-10-19 16:40:00 +02:00
samples
scripts x86/srso: Fix unret validation dependencies 2023-11-20 11:58:52 +01:00
security KEYS: trusted: Remove redundant static calls usage 2023-10-10 11:19:43 -07:00
sound ASoC: SOF: sof-pci-dev: Fix community key quirk detection 2023-11-08 11:56:24 +01:00
tools selftests/bpf: Skip module_fentry_shadow test when bpf_testmod is not available 2023-11-20 11:58:56 +01:00
usr
virt
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap 20 hotfixes. 12 are cc:stable and the remainder address post-6.5 issues 2023-10-24 09:52:16 -10:00
.rustfmt.toml
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS Char/Misc driver fixes for 6.6-final 2023-10-28 07:51:27 -10:00
Makefile Linux 6.6.1 2023-11-08 11:56:25 +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.