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Daniel T. Lee 5062a0af2b samples/bpf: fix broken map lookup probe 
[ Upstream commit d93a7cf6ca ]

In the commit 7c4cd051ad ("bpf: Fix syscall's stackmap lookup
potential deadlock"), a potential deadlock issue was addressed, which
resulted in *_map_lookup_elem not triggering BPF programs.
(prior to lookup, bpf_disable_instrumentation() is used)

To resolve the broken map lookup probe using "htab_map_lookup_elem",
this commit introduces an alternative approach. Instead, it utilize
"bpf_map_copy_value" and apply a filter specifically for the hash table
with map_type.

Signed-off-by: Daniel T. Lee <danieltimlee@gmail.com>
Fixes: 7c4cd051ad ("bpf: Fix syscall's stackmap lookup potential deadlock")
Link: https://lore.kernel.org/r/20230818090119.477441-8-danieltimlee@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
 		2023-09-13 09:48:06 +02:00
Documentation dt-bindings: sc16is7xx: Add property to change GPIO function 2023-09-06 21:25:32 +01:00
LICENSES LICENSES: Add the copyleft-next-0.3.1 license 2022-11-08 15:44:01 +01:00
arch ARM: dts: Add .dts files missing from the build 2023-09-13 09:48:06 +02:00
block blk-crypto: dynamically allocate fallback profile 2023-08-23 17:32:53 +02:00
certs KEYS: Add missing function documentation 2023-04-24 16:15:52 +03:00
crypto crypto: api - Use work queue in crypto_destroy_instance 2023-09-13 09:48:03 +02:00
drivers wifi: rtw89: 8852b: rfk: fine tune IQK parameters to improve performance on 2GHz band 2023-09-13 09:48:06 +02:00
fs fs: ocfs2: namei: check return value of ocfs2_add_entry() 2023-09-13 09:48:05 +02:00
include lwt: Check LWTUNNEL_XMIT_CONTINUE strictly 2023-09-13 09:48:05 +02:00
init sched/psi: Select KERNFS as needed 2023-09-13 09:47:58 +02:00
io_uring io_uring: correct check for O_TMPFILE 2023-08-16 18:32:19 +02:00
ipc Merge branch 'work.namespace' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2023-02-24 19:20:07 -08:00
kernel bpf: fix bpf_dynptr_slice() to stop return an ERR_PTR. 2023-09-13 09:48:03 +02:00
lib sbitmap: fix batching wakeup 2023-09-13 09:47:55 +02:00
mm net-memcg: Fix scope of sockmem pressure indicators 2023-09-13 09:48:05 +02:00
net net: annotate data-races around sk->sk_lingertime 2023-09-13 09:48:05 +02:00
rust rust: macros: vtable: fix `HAS_*` redefinition (`gen_const_name`) 2023-08-23 17:32:36 +02:00
samples samples/bpf: fix broken map lookup probe 2023-09-13 09:48:06 +02:00
scripts scripts/gdb: fix 'lx-lsmod' show the wrong size 2023-09-13 09:48:05 +02:00
security vfs, security: Fix automount superblock LSM init problem, preventing NFS sb sharing 2023-09-13 09:47:57 +02:00
sound ASoC: cs35l56: Add an ACPI match table 2023-09-13 09:47:55 +02:00
tools selftests: memfd: error out test process when child test fails 2023-09-13 09:48:06 +02:00
usr initramfs: Check negative timestamp to prevent broken cpio archive 2023-04-16 17:37:01 +09:00
virt KVM: Grab a reference to KVM for VM and vCPU stats file descriptors 2023-08-03 10:26:01 +02:00
.clang-format cxl for v6.4 2023-04-30 11:51:51 -07:00
.cocciconfig
…
.get_maintainer.ignore get_maintainer: add Alan to .get_maintainer.ignore 2022-08-20 15:17:44 -07:00
.gitattributes .gitattributes: use 'dts' diff driver for *.dtso files 2023-02-26 15:28:23 +09:00
.gitignore linux-kselftest-kunit-6.4-rc1 2023-04-24 12:31:32 -07:00
.mailmap mailmap: add entries for Ben Dooks 2023-06-19 13:19:35 -07:00
.rustfmt.toml rust: add `.rustfmt.toml` 2022-09-28 09:02:20 +02:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS MAINTAINERS: sctp: move Neil to CREDITS 2023-05-12 08:51:32 +01:00
Kbuild Kbuild updates for v6.1 2022-10-10 12:00:45 -07:00
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS Networking fixes for 6.4-rc8, including fixes from ipsec, bpf, 2023-06-22 17:59:51 -07:00
Makefile kbuild: rust_is_available: remove -v option 2023-09-13 09:48:03 +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.