Peter Zijlstra 023e78bbf1 objtool: Explicitly avoid self modifying code in .altinstr_replacement ...

commit dd003edeffa3cb87bc9862582004f405d77d7670 upstream.

Assume ALTERNATIVE()s know what they're doing and do not change, or
cause to change, instructions in .altinstr_replacement sections.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Borislav Petkov <bp@suse.de>
Acked-by: Josh Poimboeuf <jpoimboe@redhat.com>
Tested-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/r/20211026120309.722511775@infradead.org
[cascardo: context adjustment]
Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@canonical.com>
[bwh: Backported to 5.10: objtool doesn't have any mcount handling]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2022-07-25 11:26:23 +02:00

..

arch/x86

objtool: Handle __sanitize_cov*() tail calls

2022-07-25 11:26:22 +02:00

Documentation

objtool: Support stack layout changes in alternatives

2022-07-25 11:26:06 +02:00

.gitignore

.gitignore: add SPDX License Identifier

2020-03-25 11:50:48 +01:00

arch.h

objtool: Handle __sanitize_cov*() tail calls

2022-07-25 11:26:22 +02:00

Build

objtool: Enable compilation of objtool for all architectures

2020-05-20 09:17:28 -05:00

builtin-check.c

objtool: Move ORC logic out of check()

2020-09-01 17:19:11 -05:00

builtin-orc.c

objtool: Refactor ORC section generation

2022-07-25 11:26:05 +02:00

builtin.h

objtool: Implement noinstr validation

2020-04-22 10:53:50 +02:00

cfi.h

objtool: Introduce CFI hash

2022-07-25 11:26:22 +02:00

check.c

objtool: Explicitly avoid self modifying code in .altinstr_replacement

2022-07-25 11:26:23 +02:00

check.h

objtool: Introduce CFI hash

2022-07-25 11:26:22 +02:00

elf.c

objtool: Fix .symtab_shndx handling for elf_create_undef_symbol()

2022-07-25 11:26:19 +02:00

elf.h

objtool: Classify symbols

2022-07-25 11:26:23 +02:00

Makefile

objtool: Refactor ORC section generation

2022-07-25 11:26:05 +02:00

objtool.c

objtool: Keep track of retpoline call sites

2022-07-25 11:26:17 +02:00

objtool.h

objtool: Keep track of retpoline call sites

2022-07-25 11:26:17 +02:00

orc_dump.c

objtool: Make unwind hint definitions available to other architectures

2020-09-10 10:43:13 -05:00

orc_gen.c

objtool: Introduce CFI hash

2022-07-25 11:26:22 +02:00

special.c

objtool: Remove reloc symbol type checks in get_alt_entry()

2022-07-25 11:26:21 +02:00

special.h

objtool: Refactor jump table code to support other architectures

2020-09-10 10:43:13 -05:00

sync-check.sh

x86/insn: Add a __ignore_sync_check__ marker

2022-07-25 11:26:11 +02:00

warn.h

objtool: Rename find_containing_func()

2020-03-25 18:28:29 +01:00

weak.c

objtool: Refactor ORC section generation

2022-07-25 11:26:05 +02:00