linux-toradex.git/samples, branch v6.12-rc4 Linux kernel for Apalis and Colibri modules [tree-wide] finally take no_llseek out 2024-09-27T15:18:43+00:00 Al Viro viro@zeniv.linux.org.uk 2024-09-27T01:56:11+00:00 cb787f4ac0c2e439ea8d7e6387b925f74576bdf8 no_llseek had been defined to NULL two years ago, in commit 868941b14441 ("fs: remove no_llseek") To quote that commit, At -rc1 we'll need do a mechanical removal of no_llseek - git grep -l -w no_llseek | grep -v porting.rst | while read i; do sed -i '/\<no_llseek\>/d' $i done would do it. Unfortunately, that hadn't been done. Linus, could you do that now, so that we could finally put that thing to rest? All instances are of the form .llseek = no_llseek, so it's obviously safe. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 
no_llseek had been defined to NULL two years ago, in commit 868941b14441
("fs: remove no_llseek")

To quote that commit,

  At -rc1 we'll need do a mechanical removal of no_llseek -

  git grep -l -w no_llseek | grep -v porting.rst | while read i; do
	sed -i '/\<no_llseek\>/d' $i
  done

  would do it.

Unfortunately, that hadn't been done.  Linus, could you do that now, so
that we could finally put that thing to rest? All instances are of the
form
	.llseek = no_llseek,
so it's obviously safe.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Merge tag 'landlock-6.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/mic/linux 2024-09-24T17:40:11+00:00 Linus Torvalds torvalds@linux-foundation.org 2024-09-24T17:40:11+00:00 e1b061b444fb01c237838f0d8238653afe6a8094 Pull landlock updates from Mickaël Salaün: "We can now scope a Landlock domain thanks to a new "scoped" field that can deny interactions with resources outside of this domain. The LANDLOCK_SCOPE_ABSTRACT_UNIX_SOCKET flag denies connections to an abstract UNIX socket created outside of the current scoped domain, and the LANDLOCK_SCOPE_SIGNAL flag denies sending a signal to processes outside of the current scoped domain. These restrictions also apply to nested domains according to their scope. The related changes will also be useful to support other kind of IPC isolations" * tag 'landlock-6.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/mic/linux: landlock: Document LANDLOCK_SCOPE_SIGNAL samples/landlock: Add support for signal scoping selftests/landlock: Test signal created by out-of-bound message selftests/landlock: Test signal scoping for threads selftests/landlock: Test signal scoping landlock: Add signal scoping landlock: Document LANDLOCK_SCOPE_ABSTRACT_UNIX_SOCKET samples/landlock: Add support for abstract UNIX socket scoping selftests/landlock: Test inherited restriction of abstract UNIX socket selftests/landlock: Test connected and unconnected datagram UNIX socket selftests/landlock: Test UNIX sockets with any address formats selftests/landlock: Test abstract UNIX socket scoping selftests/landlock: Test handling of unknown scope landlock: Add abstract UNIX socket scoping 
Pull landlock updates from Mickaël Salaün:
 "We can now scope a Landlock domain thanks to a new "scoped" field that
  can deny interactions with resources outside of this domain.

  The LANDLOCK_SCOPE_ABSTRACT_UNIX_SOCKET flag denies connections to an
  abstract UNIX socket created outside of the current scoped domain, and
  the LANDLOCK_SCOPE_SIGNAL flag denies sending a signal to processes
  outside of the current scoped domain.

  These restrictions also apply to nested domains according to their
  scope. The related changes will also be useful to support other kind
  of IPC isolations"

* tag 'landlock-6.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/mic/linux:
  landlock: Document LANDLOCK_SCOPE_SIGNAL
  samples/landlock: Add support for signal scoping
  selftests/landlock: Test signal created by out-of-bound message
  selftests/landlock: Test signal scoping for threads
  selftests/landlock: Test signal scoping
  landlock: Add signal scoping
  landlock: Document LANDLOCK_SCOPE_ABSTRACT_UNIX_SOCKET
  samples/landlock: Add support for abstract UNIX socket scoping
  selftests/landlock: Test inherited restriction of abstract UNIX socket
  selftests/landlock: Test connected and unconnected datagram UNIX socket
  selftests/landlock: Test UNIX sockets with any address formats
  selftests/landlock: Test abstract UNIX socket scoping
  selftests/landlock: Test handling of unknown scope
  landlock: Add abstract UNIX socket scoping
Merge tag 'bpf-next-6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next 2024-09-21T16:27:50+00:00 Linus Torvalds torvalds@linux-foundation.org 2024-09-21T16:27:50+00:00 440b65232829fad69947b8de983c13a525cc8871 Pull bpf updates from Alexei Starovoitov: - Introduce '__attribute__((bpf_fastcall))' for helpers and kfuncs with corresponding support in LLVM. It is similar to existing 'no_caller_saved_registers' attribute in GCC/LLVM with a provision for backward compatibility. It allows compilers generate more efficient BPF code assuming the verifier or JITs will inline or partially inline a helper/kfunc with such attribute. bpf_cast_to_kern_ctx, bpf_rdonly_cast, bpf_get_smp_processor_id are the first set of such helpers. - Harden and extend ELF build ID parsing logic. When called from sleepable context the relevants parts of ELF file will be read to find and fetch .note.gnu.build-id information. Also harden the logic to avoid TOCTOU, overflow, out-of-bounds problems. - Improvements and fixes for sched-ext: - Allow passing BPF iterators as kfunc arguments - Make the pointer returned from iter_next method trusted - Fix x86 JIT convergence issue due to growing/shrinking conditional jumps in variable length encoding - BPF_LSM related: - Introduce few VFS kfuncs and consolidate them in fs/bpf_fs_kfuncs.c - Enforce correct range of return values from certain LSM hooks - Disallow attaching to other LSM hooks - Prerequisite work for upcoming Qdisc in BPF: - Allow kptrs in program provided structs - Support for gen_epilogue in verifier_ops - Important fixes: - Fix uprobe multi pid filter check - Fix bpf_strtol and bpf_strtoul helpers - Track equal scalars history on per-instruction level - Fix tailcall hierarchy on x86 and arm64 - Fix signed division overflow to prevent INT_MIN/-1 trap on x86 - Fix get kernel stack in BPF progs attached to tracepoint:syscall - Selftests: - Add uprobe bench/stress tool - Generate file dependencies to drastically improve re-build time - Match JIT-ed and BPF asm with __xlated/__jited keywords - Convert older tests to test_progs framework - Add support for RISC-V - Few fixes when BPF programs are compiled with GCC-BPF backend (support for GCC-BPF in BPF CI is ongoing in parallel) - Add traffic monitor - Enable cross compile and musl libc * tag 'bpf-next-6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (260 commits) btf: require pahole 1.21+ for DEBUG_INFO_BTF with default DWARF version btf: move pahole check in scripts/link-vmlinux.sh to lib/Kconfig.debug btf: remove redundant CONFIG_BPF test in scripts/link-vmlinux.sh bpf: Call the missed kfree() when there is no special field in btf bpf: Call the missed btf_record_free() when map creation fails selftests/bpf: Add a test case to write mtu result into .rodata selftests/bpf: Add a test case to write strtol result into .rodata selftests/bpf: Rename ARG_PTR_TO_LONG test description selftests/bpf: Fix ARG_PTR_TO_LONG {half-,}uninitialized test bpf: Zero former ARG_PTR_TO_{LONG,INT} args in case of error bpf: Improve check_raw_mode_ok test for MEM_UNINIT-tagged types bpf: Fix helper writes to read-only maps bpf: Remove truncation test in bpf_strtol and bpf_strtoul helpers bpf: Fix bpf_strtol and bpf_strtoul helpers for 32bit selftests/bpf: Add tests for sdiv/smod overflow cases bpf: Fix a sdiv overflow issue libbpf: Add bpf_object__token_fd accessor docs/bpf: Add missing BPF program types to docs docs/bpf: Add constant values for linkages bpf: Use fake pt_regs when doing bpf syscall tracepoint tracing ... 
Pull bpf updates from Alexei Starovoitov:

 - Introduce '__attribute__((bpf_fastcall))' for helpers and kfuncs with
   corresponding support in LLVM.

   It is similar to existing 'no_caller_saved_registers' attribute in
   GCC/LLVM with a provision for backward compatibility. It allows
   compilers generate more efficient BPF code assuming the verifier or
   JITs will inline or partially inline a helper/kfunc with such
   attribute. bpf_cast_to_kern_ctx, bpf_rdonly_cast,
   bpf_get_smp_processor_id are the first set of such helpers.

 - Harden and extend ELF build ID parsing logic.

   When called from sleepable context the relevants parts of ELF file
   will be read to find and fetch .note.gnu.build-id information. Also
   harden the logic to avoid TOCTOU, overflow, out-of-bounds problems.

 - Improvements and fixes for sched-ext:
    - Allow passing BPF iterators as kfunc arguments
    - Make the pointer returned from iter_next method trusted
    - Fix x86 JIT convergence issue due to growing/shrinking conditional
      jumps in variable length encoding

 - BPF_LSM related:
    - Introduce few VFS kfuncs and consolidate them in
      fs/bpf_fs_kfuncs.c
    - Enforce correct range of return values from certain LSM hooks
    - Disallow attaching to other LSM hooks

 - Prerequisite work for upcoming Qdisc in BPF:
    - Allow kptrs in program provided structs
    - Support for gen_epilogue in verifier_ops

 - Important fixes:
    - Fix uprobe multi pid filter check
    - Fix bpf_strtol and bpf_strtoul helpers
    - Track equal scalars history on per-instruction level
    - Fix tailcall hierarchy on x86 and arm64
    - Fix signed division overflow to prevent INT_MIN/-1 trap on x86
    - Fix get kernel stack in BPF progs attached to tracepoint:syscall

 - Selftests:
    - Add uprobe bench/stress tool
    - Generate file dependencies to drastically improve re-build time
    - Match JIT-ed and BPF asm with __xlated/__jited keywords
    - Convert older tests to test_progs framework
    - Add support for RISC-V
    - Few fixes when BPF programs are compiled with GCC-BPF backend
      (support for GCC-BPF in BPF CI is ongoing in parallel)
    - Add traffic monitor
    - Enable cross compile and musl libc

* tag 'bpf-next-6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (260 commits)
  btf: require pahole 1.21+ for DEBUG_INFO_BTF with default DWARF version
  btf: move pahole check in scripts/link-vmlinux.sh to lib/Kconfig.debug
  btf: remove redundant CONFIG_BPF test in scripts/link-vmlinux.sh
  bpf: Call the missed kfree() when there is no special field in btf
  bpf: Call the missed btf_record_free() when map creation fails
  selftests/bpf: Add a test case to write mtu result into .rodata
  selftests/bpf: Add a test case to write strtol result into .rodata
  selftests/bpf: Rename ARG_PTR_TO_LONG test description
  selftests/bpf: Fix ARG_PTR_TO_LONG {half-,}uninitialized test
  bpf: Zero former ARG_PTR_TO_{LONG,INT} args in case of error
  bpf: Improve check_raw_mode_ok test for MEM_UNINIT-tagged types
  bpf: Fix helper writes to read-only maps
  bpf: Remove truncation test in bpf_strtol and bpf_strtoul helpers
  bpf: Fix bpf_strtol and bpf_strtoul helpers for 32bit
  selftests/bpf: Add tests for sdiv/smod overflow cases
  bpf: Fix a sdiv overflow issue
  libbpf: Add bpf_object__token_fd accessor
  docs/bpf: Add missing BPF program types to docs
  docs/bpf: Add constant values for linkages
  bpf: Use fake pt_regs when doing bpf syscall tracepoint tracing
  ...
samples/landlock: Add support for signal scoping 2024-09-16T21:50:54+00:00 Tahera Fahimi fahimitahera@gmail.com 2024-09-06T21:30:07+00:00 f490e205bcbada6eb6dca8b75a2511685e6bd0f0 The sandboxer can receive the character "s" as input from the environment variable LL_SCOPE to restrict sandboxed processes from sending signals to processes outside of the sandbox. Example ======= Create a sandboxed shell and pass the character "s" to LL_SCOPED: LL_FS_RO=/ LL_FS_RW=. LL_SCOPED="s" ./sandboxer /bin/bash Try to send a SIGTRAP to a process with process ID <PID> through: kill -SIGTRAP <PID> The sandboxed process should not be able to send the signal. Signed-off-by: Tahera Fahimi <fahimitahera@gmail.com> Link: https://lore.kernel.org/r/1f3f1992b2abeb8e5d7aa61b854e1b0721978b9a.1725657728.git.fahimitahera@gmail.com [mic: Improve commit message, simplify code, rebase on previous sample change] Signed-off-by: Mickaël Salaün <mic@digikod.net> 
The sandboxer can receive the character "s" as input from the
environment variable LL_SCOPE to restrict sandboxed processes from
sending signals to processes outside of the sandbox.

Example
=======

Create a sandboxed shell and pass the character "s" to LL_SCOPED:
  LL_FS_RO=/ LL_FS_RW=. LL_SCOPED="s" ./sandboxer /bin/bash

Try to send a SIGTRAP to a process with process ID <PID> through:
  kill -SIGTRAP <PID>

The sandboxed process should not be able to send the signal.

Signed-off-by: Tahera Fahimi <fahimitahera@gmail.com>
Link: https://lore.kernel.org/r/1f3f1992b2abeb8e5d7aa61b854e1b0721978b9a.1725657728.git.fahimitahera@gmail.com
[mic: Improve commit message, simplify code, rebase on previous sample
change]
Signed-off-by: Mickaël Salaün <mic@digikod.net>
samples/landlock: Add support for abstract UNIX socket scoping 2024-09-16T21:50:51+00:00 Tahera Fahimi fahimitahera@gmail.com 2024-09-05T00:14:01+00:00 369b48b43a09f995876bb2e88d78845eb2a80212 The sandboxer can receive the character "a" as input from the environment variable LL_SCOPE to restrict sandboxed processes from connecting to an abstract UNIX socket created by a process outside of the sandbox. Example ======= Create an abstract UNIX socket to listen with socat(1): socat abstract-listen:mysocket - Create a sandboxed shell and pass the character "a" to LL_SCOPED: LL_FS_RO=/ LL_FS_RW=. LL_SCOPED="a" ./sandboxer /bin/bash Note that any other form of input (e.g. "a:a", "aa", etc) is not acceptable. If the sandboxed process tries to connect to the listening socket, the connection will fail: socat - abstract-connect:mysocket Signed-off-by: Tahera Fahimi <fahimitahera@gmail.com> Link: https://lore.kernel.org/r/d8af908f00b77415caa3eb0f4de631c3794e4909.1725494372.git.fahimitahera@gmail.com [mic: Improve commit message, simplify check_ruleset_scope() with inverted error code and only one scoped change, always unset environment variable] Signed-off-by: Mickaël Salaün <mic@digikod.net> 
The sandboxer can receive the character "a" as input from the
environment variable LL_SCOPE to restrict sandboxed processes from
connecting to an abstract UNIX socket created by a process outside of
the sandbox.

Example
=======

Create an abstract UNIX socket to listen with socat(1):
  socat abstract-listen:mysocket -

Create a sandboxed shell and pass the character "a" to LL_SCOPED:
  LL_FS_RO=/ LL_FS_RW=. LL_SCOPED="a" ./sandboxer /bin/bash

Note that any other form of input (e.g. "a:a", "aa", etc) is not
acceptable.

If the sandboxed process tries to connect to the listening socket, the
connection will fail:
  socat - abstract-connect:mysocket

Signed-off-by: Tahera Fahimi <fahimitahera@gmail.com>
Link: https://lore.kernel.org/r/d8af908f00b77415caa3eb0f4de631c3794e4909.1725494372.git.fahimitahera@gmail.com
[mic: Improve commit message, simplify check_ruleset_scope() with
inverted error code and only one scoped change, always unset environment
variable]
Signed-off-by: Mickaël Salaün <mic@digikod.net>
samples/bpf: Remove sample tracex2 2024-09-04T18:53:53+00:00 Rong Tao rongtao@cestc.cn 2024-08-31T00:03:38+00:00 46f4ea04e053e5dd01459bfbbd8e905a4ccd4190 In commit ba8de796baf4 ("net: introduce sk_skb_reason_drop function") kfree_skb_reason() becomes an inline function and cannot be traced. samples/bpf is abandonware by now, and we should slowly but surely convert whatever makes sense into BPF selftests under tools/testing/selftests/bpf and just get rid of the rest. Link: https://github.com/torvalds/linux/commit/ba8de796baf4bdc03530774fb284fe3c97875566 Signed-off-by: Rong Tao <rongtao@cestc.cn> Link: https://lore.kernel.org/r/tencent_30ADAC88CB2915CA57E9512D4460035BA107@qq.com Signed-off-by: Alexei Starovoitov <ast@kernel.org> 
In commit ba8de796baf4 ("net: introduce sk_skb_reason_drop function")
kfree_skb_reason() becomes an inline function and cannot be traced.

samples/bpf is abandonware by now, and we should slowly but surely
convert whatever makes sense into BPF selftests under
tools/testing/selftests/bpf and just get rid of the rest.

Link: https://github.com/torvalds/linux/commit/ba8de796baf4bdc03530774fb284fe3c97875566
Signed-off-by: Rong Tao <rongtao@cestc.cn>
Link: https://lore.kernel.org/r/tencent_30ADAC88CB2915CA57E9512D4460035BA107@qq.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
kmemleak-test: add percpu leak 2024-09-02T03:25:50+00:00 Pavel Tikhomirov ptikhomirov@virtuozzo.com 2024-07-25T04:12:16+00:00 e0b2fdb352b7991664b23ae5e15b537cd79a7820 Add a per-CPU memory leak, which will be reported like: unreferenced object 0x3efa840195f8 (size 64): comm "modprobe", pid 4667, jiffies 4294688677 hex dump (first 32 bytes on cpu 0): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace (crc 0): [<ffffffffa7fa87af>] pcpu_alloc+0x3df/0x840 [<ffffffffc11642d9>] kmemleak_test_init+0x2c9/0x2f0 [kmemleak_test] [<ffffffffa7c02264>] do_one_initcall+0x44/0x300 [<ffffffffa7de9e10>] do_init_module+0x60/0x240 [<ffffffffa7deb946>] init_module_from_file+0x86/0xc0 [<ffffffffa7deba99>] idempotent_init_module+0x109/0x2a0 [<ffffffffa7debd2a>] __x64_sys_finit_module+0x5a/0xb0 [<ffffffffa88f4f3a>] do_syscall_64+0x7a/0x160 [<ffffffffa8a0012b>] entry_SYSCALL_64_after_hwframe+0x76/0x7e Link: https://lkml.kernel.org/r/20240725041223.872472-3-ptikhomirov@virtuozzo.com Signed-off-by: Pavel Tikhomirov <ptikhomirov@virtuozzo.com> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Cc: Alexander Mikhalitsyn <aleksandr.mikhalitsyn@canonical.com> Cc: Chen Jun <chenjun102@huawei.com> Cc: Wei Yongjun <weiyongjun1@huawei.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> 
Add a per-CPU memory leak, which will be reported like:

unreferenced object 0x3efa840195f8 (size 64):
  comm "modprobe", pid 4667, jiffies 4294688677
  hex dump (first 32 bytes on cpu 0):
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace (crc 0):
    [<ffffffffa7fa87af>] pcpu_alloc+0x3df/0x840
    [<ffffffffc11642d9>] kmemleak_test_init+0x2c9/0x2f0 [kmemleak_test]
    [<ffffffffa7c02264>] do_one_initcall+0x44/0x300
    [<ffffffffa7de9e10>] do_init_module+0x60/0x240
    [<ffffffffa7deb946>] init_module_from_file+0x86/0xc0
    [<ffffffffa7deba99>] idempotent_init_module+0x109/0x2a0
    [<ffffffffa7debd2a>] __x64_sys_finit_module+0x5a/0xb0
    [<ffffffffa88f4f3a>] do_syscall_64+0x7a/0x160
    [<ffffffffa8a0012b>] entry_SYSCALL_64_after_hwframe+0x76/0x7e

Link: https://lkml.kernel.org/r/20240725041223.872472-3-ptikhomirov@virtuozzo.com
Signed-off-by: Pavel Tikhomirov <ptikhomirov@virtuozzo.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: Alexander Mikhalitsyn <aleksandr.mikhalitsyn@canonical.com>
Cc: Chen Jun <chenjun102@huawei.com>
Cc: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
samples/bpf: tracex4: Fix failed to create kretprobe 'kmem_cache_alloc_node+0x0' 2024-08-27T23:17:44+00:00 Rong Tao rongtao@cestc.cn 2024-08-27T04:30:30+00:00 d205d4af3a5ee840edecfa5f6b389d7d03b0786d commit 7bd230a26648 ("mm/slab: enable slab allocation tagging for kmalloc and friends") [1] swap kmem_cache_alloc_node() to kmem_cache_alloc_node_noprof(). linux/samples/bpf$ sudo ./tracex4 libbpf: prog 'bpf_prog2': failed to create kretprobe 'kmem_cache_alloc_node+0x0' perf event: No such file or directory ERROR: bpf_program__attach failed Signed-off-by: Rong Tao <rongtao@cestc.cn> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://github.com/torvalds/linux/commit/7bd230a26648ac68ab3731ebbc449090f0ac6a37 Link: https://lore.kernel.org/bpf/tencent_34E5BCCAC5ABF3E81222AD81B1D05F16DE06@qq.com 
commit 7bd230a26648 ("mm/slab: enable slab allocation tagging for kmalloc
and friends") [1] swap kmem_cache_alloc_node() to
kmem_cache_alloc_node_noprof().

    linux/samples/bpf$ sudo ./tracex4
    libbpf: prog 'bpf_prog2': failed to create kretprobe
    'kmem_cache_alloc_node+0x0' perf event: No such file or directory
    ERROR: bpf_program__attach failed

Signed-off-by: Rong Tao <rongtao@cestc.cn>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://github.com/torvalds/linux/commit/7bd230a26648ac68ab3731ebbc449090f0ac6a37
Link: https://lore.kernel.org/bpf/tencent_34E5BCCAC5ABF3E81222AD81B1D05F16DE06@qq.com
samples/bpf: Fix compilation errors with cf-protection option 2024-08-15T22:57:00+00:00 Jiangshan Yi yijiangshan@kylinos.cn 2024-08-15T13:55:24+00:00 fdf1c728fac541891ef1aa773bfd42728626769c Currently, compiling the bpf programs will result the compilation errors with the cf-protection option as follows in arm64 and loongarch64 machine when using gcc 12.3.1 and clang 17.0.6. This commit fixes the compilation errors by limited the cf-protection option only used in x86 platform. [root@localhost linux]# make M=samples/bpf ...... CLANG-bpf samples/bpf/xdp2skb_meta_kern.o error: option 'cf-protection=return' cannot be specified on this target error: option 'cf-protection=branch' cannot be specified on this target 2 errors generated. CLANG-bpf samples/bpf/syscall_tp_kern.o error: option 'cf-protection=return' cannot be specified on this target error: option 'cf-protection=branch' cannot be specified on this target 2 errors generated. ...... Fixes: 34f6e38f58db ("samples/bpf: fix warning with ignored-attributes") Reported-by: Jiangshan Yi <yijiangshan@kylinos.cn> Signed-off-by: Jiangshan Yi <yijiangshan@kylinos.cn> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Tested-by: Qiang Wang <wangqiang1@kylinos.cn> Link: https://lore.kernel.org/bpf/20240815135524.140675-1-13667453960@163.com 
Currently, compiling the bpf programs will result the compilation errors
with the cf-protection option as follows in arm64 and loongarch64 machine
when using gcc 12.3.1 and clang 17.0.6. This commit fixes the compilation
errors by limited the cf-protection option only used in x86 platform.

[root@localhost linux]# make M=samples/bpf
	......
  CLANG-bpf  samples/bpf/xdp2skb_meta_kern.o
error: option 'cf-protection=return' cannot be specified on this target
error: option 'cf-protection=branch' cannot be specified on this target
2 errors generated.
  CLANG-bpf  samples/bpf/syscall_tp_kern.o
error: option 'cf-protection=return' cannot be specified on this target
error: option 'cf-protection=branch' cannot be specified on this target
2 errors generated.
	......

Fixes: 34f6e38f58db ("samples/bpf: fix warning with ignored-attributes")
Reported-by: Jiangshan Yi <yijiangshan@kylinos.cn>
Signed-off-by: Jiangshan Yi <yijiangshan@kylinos.cn>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Tested-by: Qiang Wang <wangqiang1@kylinos.cn>
Link: https://lore.kernel.org/bpf/20240815135524.140675-1-13667453960@163.com
treewide: remove unnecessary <linux/version.h> inclusion 2024-08-12T09:36:44+00:00 Masahiro Yamada masahiroy@kernel.org 2024-08-07T17:47:28+00:00 e332a5aba83500e8d422c90d2a84d8a5f888673e These files do not use any macros defined in <linux/version.h>. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Nicolas Schier <nicolas@fjasle.eu> 
These files do not use any macros defined in <linux/version.h>.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>