diff options
| author | Peter Zijlstra <peterz@infradead.org> | 2019-05-07 23:25:50 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-02-14 16:33:28 -0500 |
| commit | 2cdef3b47a404cb913efb192f280673da6f6e227 (patch) | |
| tree | aa6a4dd072de220cf0c34cfd91ff8f17da9f7b77 | |
| parent | 510cd44619e873098283e0093bacfba1d7401160 (diff) | |
x86/stackframe, x86/ftrace: Add pt_regs frame annotations
commit ea1ed38dba64b64a245ab8ca1406269d17b99485 upstream.
When CONFIG_FRAME_POINTER, we should mark pt_regs frames.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
[4.19 backport; added user-visible changelog]
Signed-off-by: Dmitry Safonov <dima@arista.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | arch/x86/kernel/ftrace_32.S | 3 | ||||
| -rw-r--r-- | arch/x86/kernel/ftrace_64.S | 3 |
2 files changed, 6 insertions, 0 deletions
diff --git a/arch/x86/kernel/ftrace_32.S b/arch/x86/kernel/ftrace_32.S index 4c8440de3355..83f18e829ac7 100644 --- a/arch/x86/kernel/ftrace_32.S +++ b/arch/x86/kernel/ftrace_32.S @@ -9,6 +9,7 @@ #include <asm/export.h> #include <asm/ftrace.h> #include <asm/nospec-branch.h> +#include <asm/frame.h> #ifdef CC_USING_FENTRY # define function_hook __fentry__ @@ -131,6 +132,8 @@ ENTRY(ftrace_regs_caller) pushl %ecx pushl %ebx + ENCODE_FRAME_POINTER + movl 12*4(%esp), %eax /* Load ip (1st parameter) */ subl $MCOUNT_INSN_SIZE, %eax /* Adjust ip */ #ifdef CC_USING_FENTRY diff --git a/arch/x86/kernel/ftrace_64.S b/arch/x86/kernel/ftrace_64.S index 75f2b36b41a6..24b9abf718e8 100644 --- a/arch/x86/kernel/ftrace_64.S +++ b/arch/x86/kernel/ftrace_64.S @@ -9,6 +9,7 @@ #include <asm/export.h> #include <asm/nospec-branch.h> #include <asm/unwind_hints.h> +#include <asm/frame.h> .code64 .section .entry.text, "ax" @@ -222,6 +223,8 @@ GLOBAL(ftrace_regs_caller_op_ptr) leaq MCOUNT_REG_SIZE+8*2(%rsp), %rcx movq %rcx, RSP(%rsp) + ENCODE_FRAME_POINTER + /* regs go into 4th parameter */ leaq (%rsp), %rcx |