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x86/kprobes: Add UNWIND_HINT_FUNC on kretprobe_trampoline()

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Add UNWIND_HINT_FUNC on __kretprobe_trampoline() code so that ORC
information is generated on the __kretprobe_trampoline() correctly.
Also, this uses STACK_FRAME_NON_STANDARD_FP(), CONFIG_FRAME_POINTER-
-specific version of STACK_FRAME_NON_STANDARD().

Link: https://lkml.kernel.org/r/163163049242.489837.11970969750993364293.stgit@devnote2

Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Tested-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
This commit is contained in:
Josh Poimboeuf
2021-09-14 23:41:32 +09:00
committed by Steven Rostedt (VMware)
parent 5b284b1933
commit eb4a3f7d78
2 changed files with 16 additions and 2 deletions
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5
arch/x86/include/asm/unwind_hints.h
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@@ -52,6 +52,11 @@
UNWIND_HINT sp_reg=ORC_REG_SP sp_offset=8 type=UNWIND_HINT_TYPE_FUNC
.endm
#else
#define UNWIND_HINT_FUNC \
UNWIND_HINT(ORC_REG_SP, 8, UNWIND_HINT_TYPE_FUNC, 0)
#endif /* __ASSEMBLY__ */
#endif /* _ASM_X86_UNWIND_HINTS_H */