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Alexei Starovoitov 30b8fdbbe3 Merge branch 'bpf: Fixes for CONFIG_X86_KERNEL_IBT'
Jiri Olsa says:

====================
Martynas reported bpf_get_func_ip returning +4 address when
CONFIG_X86_KERNEL_IBT option is enabled and I found there are
some failing bpf tests when this option is enabled.

The CONFIG_X86_KERNEL_IBT option adds endbr instruction at the
function entry, so the idea is to 'fix' entry ip for kprobe_multi
and trampoline probes, because they are placed on the function
entry.

v5 changes:
  - updated uapi/linux/bpf.h headers with comment for
    bpf_get_func_ip returning 0 [Andrii]
  - added acks

v4 changes:
  - used get_kernel_nofault to read previous instruction [Peter]
  - used movabs instruction in trampoline comment [Peter]
  - renamed fentry_ip argument in kprobe_multi_link_handler [Peter]

v3 changes:
  - using 'unused' bpf function to get IBT config option
    into selftest skeleton
  - rebased to current bpf-next/master
  - added ack/review from Masami

v2 changes:
  - change kprobes get_func_ip to return zero for kprobes
    attached within the function body [Andrii]
  - detect IBT config and properly test kprobe with offset
    [Andrii]

v1 changes:
  - read previous instruction in kprobe_multi link handler
    and adjust entry_ip for CONFIG_X86_KERNEL_IBT option
  - split first patch into 2 separate changes
  - update changelogs
====================

Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2022-09-26 20:31:02 -07:00
arch bpf: Use given function address for trampoline ip arg 2022-09-26 20:30:39 -07:00
block block-6.0-2022-08-26 2022-08-26 11:05:54 -07:00
certs Kbuild updates for v5.20 2022-08-10 10:40:41 -07:00
crypto crypto: blake2b: effectively disable frame size warning 2022-08-10 17:59:11 -07:00
Documentation bpf: Tweak definition of KF_TRUSTED_ARGS 2022-09-21 19:25:26 -07:00
drivers net: moxa: fix endianness-related issues from 'sparse' 2022-09-06 10:24:42 +02:00
fs Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2022-09-01 12:58:02 -07:00
include bpf: Return value in kprobe get_func_ip only for entry address 2022-09-26 20:30:40 -07:00
init arm64 fixes for -rc3 2022-08-26 11:32:53 -07:00
io_uring lsm/stable-6.0 PR 20220829 2022-08-31 09:23:16 -07:00
ipc Updates to various subsystems which I help look after. lib, ocfs2, 2022-08-07 10:03:24 -07:00
kernel bpf: Return value in kprobe get_func_ip only for entry address 2022-09-26 20:30:40 -07:00
lib This push fixes a boot performance regression due to an unnecessary 2022-08-31 09:47:06 -07:00
LICENSES
mm slab fixes for 6.0-rc4 2022-09-01 09:14:56 -07:00
net skmsg: Schedule psock work if the cached skb exists on the psock 2022-09-26 17:48:05 +02:00
samples samples/bpf: Replace blk_account_io_done() with __blk_account_io_done() 2022-09-20 17:25:59 -07:00
scripts Merge https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next 2022-09-06 23:21:18 +02:00
security KEYS: Move KEY_LOOKUP_ to include/linux/key.h and define KEY_LOOKUP_ALL 2022-09-21 17:32:48 -07:00
sound ALSA: usb-audio: Add quirk for LH Labs Geek Out HD Audio 1V5 2022-08-28 09:42:14 +02:00
tools selftests/bpf: Fix get_func_ip offset test for CONFIG_X86_KERNEL_IBT 2022-09-26 20:30:40 -07:00
usr Not a lot of material this cycle. Many singleton patches against various 2022-05-27 11:22:03 -07:00
virt KVM: Drop unnecessary initialization of "ops" in kvm_ioctl_create_device() 2022-08-19 04:05:43 -04:00
.clang-format PCI/DOE: Add DOE mailbox support functions 2022-07-19 15:38:04 -07:00
.cocciconfig
.get_maintainer.ignore get_maintainer: add Alan to .get_maintainer.ignore 2022-08-20 15:17:44 -07:00
.gitattributes
.gitignore kbuild: split the second line of *.mod into *.usyms 2022-05-08 03:16:59 +09:00
.mailmap .mailmap: update Luca Ceresoli's e-mail address 2022-08-28 14:02:46 -07:00
COPYING
CREDITS drm for 5.20/6.0 2022-08-03 19:52:08 -07:00
Kbuild
Kconfig
MAINTAINERS net: pcs: add new PCS driver for altera TSE PCS 2022-09-05 10:16:53 +01:00
Makefile Linux 6.0-rc3 2022-08-28 15:05:29 -07:00
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.