Sami Tolvanen 5c4b234c44 objtool: Preserve special st_shndx indexes in elf_update_symbol ...

[ Upstream commit 5141d3a06b ]

elf_update_symbol fails to preserve the special st_shndx values
between [SHN_LORESERVE, SHN_HIRESERVE], which results in it
converting SHN_ABS entries into SHN_UNDEF, for example. Explicitly
check for the special indexes and ensure these symbols are not
marked undefined.

Fixes: ead165fa10 ("objtool: Fix symbol creation")
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Tested-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20220908215504.3686827-17-samitolvanen@google.com
Signed-off-by: Sasha Levin <sashal@kernel.org>

2022-10-26 12:34:37 +02:00

..

arch/x86

x86,objtool: Create .return_sites

2022-07-23 12:53:58 +02:00

Documentation

objtool: Support stack layout changes in alternatives

2021-01-14 09:53:54 -06:00

include/objtool

x86/retbleed: Add fine grained Kconfig knobs

2022-07-23 12:54:10 +02:00

.gitignore

objtool: Rework header include paths

2021-01-13 18:13:14 -06:00

Build

…

builtin-check.c

x86/retbleed: Add fine grained Kconfig knobs

2022-07-23 12:54:10 +02:00

builtin-orc.c

objtool: Collate parse_options() users

2021-03-06 12:44:23 +01:00

check.c

x86/retbleed: Add fine grained Kconfig knobs

2022-07-23 12:54:10 +02:00

elf.c

objtool: Preserve special st_shndx indexes in elf_update_symbol

2022-10-26 12:34:37 +02:00

Makefile

objtool: Refactor ORC section generation

2021-01-14 09:53:42 -06:00

objtool.c

x86,objtool: Create .return_sites

2022-07-23 12:53:58 +02:00

orc_dump.c

x86/unwind/orc: Change REG_SP_INDIRECT

2021-02-10 20:53:51 +01:00

orc_gen.c

objtool: Introduce CFI hash

2022-07-23 12:53:51 +02:00

special.c

objtool,x86: Replace alternatives with .retpoline_sites

2022-07-23 12:53:51 +02:00

sync-check.sh

Merge branch 'x86/cpu' into WIP.x86/core, to merge the NOP changes & resolve a semantic conflict

2021-04-02 12:36:30 +02:00

weak.c

objtool: Refactor ORC section generation

2021-01-14 09:53:42 -06:00