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Daniel T. Lee 91d92d8975 samples/bpf: fix broken map lookup probe 
[ Upstream commit d93a7cf6ca2cfcd7de5d06f753ce8d5e863316ac ]

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>
2023-09-19 12:20:09 +02:00
arch s390/paes: fix PKEY_TYPE_EP11_AES handling for secure keyblobs 2023-09-19 12:20:07 +02:00
block block/partition: fix signedness issue for Amiga partitions 2023-07-27 08:44:18 +02:00
certs certs/blacklist_hashes.c: fix const confusion in certs blacklist 2022-06-22 14:13:17 +02:00
crypto crypto: api - Use work queue in crypto_destroy_instance 2023-09-19 12:20:08 +02:00
Documentation x86/cpu: Rename srso_(.*)_alias to srso_alias_\1 2023-08-26 15:26:57 +02:00
drivers wifi: mwifiex: Fix missed return in oob checks failed path 2023-09-19 12:20:09 +02:00
fs fs: ocfs2: namei: check return value of ocfs2_add_entry() 2023-09-19 12:20:09 +02:00
include lwt: Check LWTUNNEL_XMIT_CONTINUE strictly 2023-09-19 12:20:09 +02:00
init x86/mm: Initialize text poking earlier 2023-08-08 19:57:39 +02:00
io_uring io_uring: correct check for O_TMPFILE 2023-08-16 18:21:00 +02:00
ipc ipc/sem: Fix dangling sem_array access in semtimedop race 2022-12-08 11:24:00 +01:00
kernel bpf: Clear the probe_addr for uprobe 2023-09-19 12:20:07 +02:00
lib radix tree: remove unused variable 2023-08-30 16:23:16 +02:00
LICENSES LICENSES/deprecated: add Zlib license text 2020-09-16 14:33:49 +02:00
mm tmpfs: verify {g,u}id mount options correctly 2023-09-19 12:20:06 +02:00
net lwt: Check LWTUNNEL_XMIT_CONTINUE strictly 2023-09-19 12:20:09 +02:00
samples samples/bpf: fix broken map lookup probe 2023-09-19 12:20:09 +02:00
scripts modpost: fix off by one in is_executable_section() 2023-07-27 08:44:00 +02:00
security security: keys: perform capable check only on privileged operations 2023-09-19 12:20:05 +02:00
sound ALSA: seq: oss: Fix racy open/close of MIDI devices 2023-09-19 12:20:06 +02:00
tools selftests/bpf: Clean up fmod_ret in bench_rename test script 2023-09-19 12:20:09 +02:00
usr usr/include/Makefile: add linux/nfc.h to the compile-test coverage 2022-02-01 17:25:48 +01:00
virt KVM: fix memoryleak in kvm_init() 2023-04-05 11:23:43 +02:00
.clang-format RDMA 5.10 pull request 2020-10-17 11:18:18 -07:00
.cocciconfig
.get_maintainer.ignore Opt out of scripts/get_maintainer.pl 2019-05-16 10:53:40 -07:00
.gitattributes .gitattributes: use 'dts' diff driver for dts files 2019-12-04 19:44:11 -08:00
.gitignore kbuild: generate Module.symvers only when vmlinux exists 2021-05-19 10:12:59 +02:00
.mailmap mailmap: add two more addresses of Uwe Kleine-König 2020-12-06 10:19:07 -08:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS MAINTAINERS: Move Jason Cooper to CREDITS 2020-11-30 10:20:34 +01:00
Kbuild kbuild: rename hostprogs-y/always to hostprogs/always-y 2020-02-04 01:53:07 +09:00
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS Remove DECnet support from kernel 2023-06-21 15:45:38 +02:00
Makefile Linux 5.10.194 2023-09-02 09:18:14 +02:00
README Drop all 00-INDEX files from Documentation/ 2018-09-09 15:08:58 -06:00

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.