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| author | Ingo Molnar <mingo@kernel.org> | 2018-03-24 09:25:26 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2018-03-24 09:25:26 +0100 |
| commit | ea2301b6220117398a1de4f4bc853fbe886d5e08 (patch) | |
| tree | 8823c3becd0b4fd3db9706892845cd02f760627a /kernel/fail_function.c | |
| parent | 0803e6051c1562e1525c3e044313390bf8b35c2b (diff) | |
| parent | 99fec39e7725d091c94d1bb0242e40c8092994f6 (diff) | |
| download | linux-ea2301b6220117398a1de4f4bc853fbe886d5e08.tar.gz linux-ea2301b6220117398a1de4f4bc853fbe886d5e08.zip | |
Merge branch 'linus' into x86/dma, to resolve a conflict with upstream
Conflicts:
arch/x86/mm/init_64.c
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/fail_function.c')
| -rw-r--r-- | kernel/fail_function.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/kernel/fail_function.c b/kernel/fail_function.c index 21b0122cb39c..1d5632d8bbcc 100644 --- a/kernel/fail_function.c +++ b/kernel/fail_function.c @@ -14,6 +14,15 @@ static int fei_kprobe_handler(struct kprobe *kp, struct pt_regs *regs); +static void fei_post_handler(struct kprobe *kp, struct pt_regs *regs, + unsigned long flags) +{ + /* + * A dummy post handler is required to prohibit optimizing, because + * jump optimization does not support execution path overriding. + */ +} + struct fei_attr { struct list_head list; struct kprobe kp; @@ -56,6 +65,7 @@ static struct fei_attr *fei_attr_new(const char *sym, unsigned long addr) return NULL; } attr->kp.pre_handler = fei_kprobe_handler; + attr->kp.post_handler = fei_post_handler; attr->retval = adjust_error_retval(addr, 0); INIT_LIST_HEAD(&attr->list); } |