diff options
| author | Peter Zijlstra <peterz@infradead.org> | 2022-03-08 16:30:34 +0100 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2022-03-15 10:32:38 +0100 |
| commit | 0aec21cfb51bc1856206f312d8c13bf1f368d78e (patch) | |
| tree | 27f8562227aea41fa3c75739c1dfe525df8c8261 /samples/ftrace/ftrace-direct-multi-modify.c | |
| parent | x86/ibt,bpf: Add ENDBR instructions to prologue and trampoline (diff) | |
| download | linux-0aec21cfb51bc1856206f312d8c13bf1f368d78e.tar.xz linux-0aec21cfb51bc1856206f312d8c13bf1f368d78e.zip | |
x86/ibt,ftrace: Add ENDBR to samples/ftrace
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Josh Poimboeuf <jpoimboe@redhat.com>
Link: https://lore.kernel.org/r/20220308154318.523421433@infradead.org
Diffstat (limited to 'samples/ftrace/ftrace-direct-multi-modify.c')
| -rw-r--r-- | samples/ftrace/ftrace-direct-multi-modify.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/samples/ftrace/ftrace-direct-multi-modify.c b/samples/ftrace/ftrace-direct-multi-modify.c index 6f43a39decd0..65aa94d96f4e 100644 --- a/samples/ftrace/ftrace-direct-multi-modify.c +++ b/samples/ftrace/ftrace-direct-multi-modify.c @@ -22,11 +22,14 @@ extern void my_tramp2(void *); #ifdef CONFIG_X86_64 +#include <asm/ibt.h> + asm ( " .pushsection .text, \"ax\", @progbits\n" " .type my_tramp1, @function\n" " .globl my_tramp1\n" " my_tramp1:" + ASM_ENDBR " pushq %rbp\n" " movq %rsp, %rbp\n" " pushq %rdi\n" @@ -34,12 +37,13 @@ asm ( " call my_direct_func1\n" " popq %rdi\n" " leave\n" -" ret\n" + ASM_RET " .size my_tramp1, .-my_tramp1\n" + " .type my_tramp2, @function\n" -"\n" " .globl my_tramp2\n" " my_tramp2:" + ASM_ENDBR " pushq %rbp\n" " movq %rsp, %rbp\n" " pushq %rdi\n" @@ -47,7 +51,7 @@ asm ( " call my_direct_func2\n" " popq %rdi\n" " leave\n" -" ret\n" + ASM_RET " .size my_tramp2, .-my_tramp2\n" " .popsection\n" ); |