user/sven/linux.git/include/linux/objtool.h, branch v5.18.3Linux Kernel
https://git.stealer.net/cgit.cgi/user/sven/linux.git/atom?h=v5.18.32022-03-15T09:32:45Zx86,objtool: Move the ASM_REACHABLE annotation to objtool.h2022-03-15T09:32:45ZPeter Zijlstrapeterz@infradead.org2022-03-14T17:05:52Zurn:sha1:dca5da2abe406168b85f97e22109710ebe0bda08
Because we need a variant for .S files too.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/Yi9gOW9f1GGwwUD6@hirez.programming.kicks-ass.net
x86/ibt: Add ANNOTATE_NOENDBR2022-03-15T09:32:33ZPeter Zijlstrapeterz@infradead.org2022-03-08T15:30:18Zurn:sha1:c8c301abeae58ec756b8fcb2178a632bd3c9e284
In order to have objtool warn about code references to !ENDBR
instruction, we need an annotation to allow this for non-control-flow
instances -- consider text range checks, text patching, or return
trampolines etc.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Acked-by: Josh Poimboeuf <jpoimboe@redhat.com>
Link: https://lore.kernel.org/r/20220308154317.578968224@infradead.org
objtool: Add frame-pointer-specific function ignore2021-10-01T01:24:07ZJosh Poimboeufjpoimboe@redhat.com2021-09-14T14:41:13Zurn:sha1:e028c4f7ac7ca8c96126fe46c54ab3d56ffe6a66
Add a CONFIG_FRAME_POINTER-specific version of
STACK_FRAME_NON_STANDARD() for the case where a function is
intentionally missing frame pointer setup, but otherwise needs
objtool/ORC coverage when frame pointers are disabled.
Link: https://lkml.kernel.org/r/163163047364.489837.17377799909553689661.stgit@devnote2
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Reviewed-by: Masami Hiramatsu <mhiramat@kernel.org>
Tested-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
objtool: Combine UNWIND_HINT_RET_OFFSET and UNWIND_HINT_FUNC2021-01-26T17:12:00ZJosh Poimboeufjpoimboe@redhat.com2021-01-21T21:29:24Zurn:sha1:b735bd3e68824316655252a931a3353a6ebc036f
The ORC metadata generated for UNWIND_HINT_FUNC isn't actually very
func-like. With certain usages it can cause stack state mismatches
because it doesn't set the return address (CFI_RA).
Also, users of UNWIND_HINT_RET_OFFSET no longer need to set a custom
return stack offset. Instead they just need to specify a func-like
situation, so the current ret_offset code is hacky for no good reason.
Solve both problems by simplifying the RET_OFFSET handling and
converting it into a more useful UNWIND_HINT_FUNC.
If we end up needing the old 'ret_offset' functionality again in the
future, we should be able to support it pretty easily with the addition
of a custom 'sp_offset' in UNWIND_HINT_FUNC.
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Link: https://lore.kernel.org/r/db9d1f5d79dddfbb3725ef6d8ec3477ad199948d.1611263462.git.jpoimboe@redhat.com
objtool: Add asm version of STACK_FRAME_NON_STANDARD2021-01-26T17:12:00ZJosh Poimboeufjpoimboe@redhat.com2021-01-21T21:29:23Zurn:sha1:081df94301e317e84c3413686043987da2c3e39d
To be used for adding asm functions to the ignore list. The "aw" is
needed to help the ELF section metadata match GCC-created sections.
Otherwise the linker creates duplicate sections instead of combining
them.
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Link: https://lore.kernel.org/r/8faa476f9a5ac89af27944ec184c89f95f3c6c49.1611263462.git.jpoimboe@redhat.com
treewide: Convert macro and uses of __section(foo) to __section("foo")2020-10-25T21:51:49ZJoe Perchesjoe@perches.com2020-10-22T02:36:07Zurn:sha1:33def8498fdde180023444b08e12b72a9efed41d
Use a more generic form for __section that requires quotes to avoid
complications with clang and gcc differences.
Remove the quote operator # from compiler_attributes.h __section macro.
Convert all unquoted __section(foo) uses to quoted __section("foo").
Also convert __attribute__((section("foo"))) uses to __section("foo")
even if the __attribute__ has multiple list entry forms.
Conversion done using the script at:
https://lore.kernel.org/lkml/75393e5ddc272dc7403de74d645e6c6e0f4e70eb.camel@perches.com/2-convert_section.pl
Signed-off-by: Joe Perches <joe@perches.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@gooogle.com>
Reviewed-by: Miguel Ojeda <ojeda@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
objtool: Make unwind hint definitions available to other architectures2020-09-10T15:43:13ZJulien Thierryjthierry@redhat.com2020-09-04T15:30:27Zurn:sha1:ee819aedf34a8f35cd54ee3967c7beb4d1d4a635
Unwind hints are useful to provide objtool with information about stack
states in non-standard functions/code.
While the type of information being provided might be very arch
specific, the mechanism to provide the information can be useful for
other architectures.
Move the relevant unwint hint definitions for all architectures to
see.
[ jpoimboe: REGS_IRET -> REGS_PARTIAL ]
Signed-off-by: Julien Thierry <jthierry@redhat.com>
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
objtool: Only include valid definitions depending on source file type2020-09-10T15:43:13ZJulien Thierryjthierry@redhat.com2020-09-04T15:30:26Zurn:sha1:5567c6c39f3404e4492c18c0c1abff5556684f6e
Header include/linux/objtool.h contains both C and assembly definition that
are visible regardless of the file including them.
Place definition under conditional __ASSEMBLY__.
Reviewed-by: Miroslav Benes <mbenes@suse.cz>
Signed-off-by: Julien Thierry <jthierry@redhat.com>
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
objtool: Rename frame.h -> objtool.h2020-09-10T15:43:13ZJulien Thierryjthierry@redhat.com2020-09-04T15:30:25Zurn:sha1:00089c048eb4a8250325efb32a2724fd0da68cce
Header frame.h is getting more code annotations to help objtool analyze
object files.
Rename the file to objtool.h.
[ jpoimboe: add objtool.h to MAINTAINERS ]
Signed-off-by: Julien Thierry <jthierry@redhat.com>
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>