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| author | Sean Paul <seanpaul@chromium.org> | 2018-04-16 10:47:13 -0400 |
|---|---|---|
| committer | Sean Paul <seanpaul@chromium.org> | 2018-04-16 10:47:13 -0400 |
| commit | 8089f9f5a32938ddefb1767b8ee14bb7996e5e2f (patch) | |
| tree | c6c8924fda51c7f54bebffa63a41ae15954995bf /kernel/fail_function.c | |
| parent | c0db1b677e1d584fab5d7ac76a32e1c0157542e0 (diff) | |
| parent | a10beabba213924d876f2d10ca9351aeab93f58a (diff) | |
Merge airlied/drm-next into drm-misc-fixes
Fast forwarding -fixes for 4.17.
Signed-off-by: Sean Paul <seanpaul@chromium.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); } |