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A mirror of the official Linux kernel repository just in case
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Kumar Kartikeya Dwivedi 7ada3787e9 bpf: Check for NULL return from bpf_get_btf_vmlinux 
When CONFIG_DEBUG_INFO_BTF is disabled, bpf_get_btf_vmlinux can return a
NULL pointer. Check for it in btf_get_module_btf to prevent a NULL pointer
dereference.

While kernel test robot only complained about this specific case, let's
also check for NULL in other call sites of bpf_get_btf_vmlinux.

Fixes: 9492450fd2 ("bpf: Always raise reference in btf_get_module_btf")
Reported-by: kernel test robot <oliver.sang@intel.com>
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20220320143003.589540-1-memxor@gmail.com
2022-03-20 19:21:38 -07:00
arch ARM: rethook: Add rethook arm implementation 2022-03-17 20:16:49 -07:00
block block: clear iocb->private in blkdev_bio_end_io_async() 2022-02-22 06:59:49 -07:00
certs certs: Fix build error when CONFIG_MODULE_SIG_KEY is empty 2022-01-23 00:08:44 +09:00
crypto crypto: af_alg - get rid of alg_memory_allocated 2022-02-15 14:29:04 +00:00
Documentation docs: fprobe: Add fprobe description to ftrace-use.rst 2022-03-17 20:17:08 -07:00
drivers veth: Allow jumbo frames in xdp mode 2022-03-17 20:33:52 +01:00
fs Change since last update: 2022-03-02 12:08:36 -08:00
include bpf: Adjust BPF stack helper functions to accommodate skip > 0 2022-03-20 19:16:23 -07:00
init Merge https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next 2022-02-09 18:40:56 -08:00
ipc ipc/sem: do not sleep with a spin lock held 2022-02-04 09:25:05 -08:00
kernel bpf: Check for NULL return from bpf_get_btf_vmlinux 2022-03-20 19:21:38 -07:00
lib lib/sort: Add priv pointer to swap function 2022-03-17 20:17:18 -07:00
LICENSES LICENSES/LGPL-2.1: Add LGPL-2.1-or-later as valid identifiers 2021-12-16 14:33:10 +01:00
mm memblock: use kfree() to release kmalloced memblock regions 2022-02-26 12:00:44 -08:00
net bpf: Check for NULL return from bpf_get_btf_vmlinux 2022-03-20 19:21:38 -07:00
samples fprobe: Add sample program for fprobe 2022-03-17 20:16:58 -07:00
scripts scripts/pahole-flags.sh: Parse DWARF and generate BTF with multithreading. 2022-02-22 14:32:44 -08:00
security ima: Always return a file measurement in ima_file_hash() 2022-03-10 18:56:24 -08:00
sound spi: Make remove() return void 2022-02-28 10:43:07 -08:00
tools selftests/bpf: Test skipping stacktrace 2022-03-20 19:16:50 -07:00
usr kbuild: remove include/linux/cyclades.h from header file check 2022-01-27 08:51:08 +01:00
virt KVM: Fix lockdep false negative during host resume 2022-02-17 09:52:50 -05:00
.clang-format genirq/msi: Make interrupt allocation less convoluted 2021-12-16 22:22:20 +01:00
.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 .gitignore: ignore only top-level modules.builtin 2021-05-02 00:43:35 +09:00
.mailmap mailmap: update Roman Gushchin's email 2022-02-26 09:51:17 -08:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS MAINTAINERS: replace a Microchip AT91 maintainer 2022-02-09 11:30:01 +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 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2022-03-03 11:55:12 -08:00
Makefile Linux 5.17-rc6 2022-02-27 14:36:33 -08:00
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.