[PATCH 5.13 341/351] kprobe/static_call: Restore missing static_call_text_reserved()

Greg Kroah-Hartman
2021-07-19T17:48:15Z

From: Peter Zijlstra <peterz@infradead.org>

[ Upstream commit fa68bd09fc62240a383c0c601d3349c47db10c34 ]

Restore two hunks from commit:

6333e8f73b83 ("static_call: Avoid kprobes on inline static_call()s")

that went walkabout in a Git merge commit.

Fixes: 76d4acf22b48 ("Merge tag 'perf-kprobes-2020-12-14' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip")
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Link: https://lore.kernel.org/r/20210628113045.167127609@infradead.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
kernel/kprobes.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/kernel/kprobes.c b/kernel/kprobes.c
index 745f08fdd7a6..c6b4c66b8fa2 100644
--- a/kernel/kprobes.c
+++ b/kernel/kprobes.c
@@ -35,6 +35,7 @@
#include <linux/ftrace.h>
#include <linux/cpu.h>
#include <linux/jump_label.h>
+#include <linux/static_call.h>
#include <linux/perf_event.h>

#include <asm/sections.h>
@@ -1569,6 +1570,7 @@ static int check_kprobe_address_safe(struct kprobe *p,
if (!kernel_text_address((unsigned long) p->addr) ||
within_kprobe_blacklist((unsigned long) p->addr) ||
jump_label_text_reserved(p->addr, p->addr) ||
+ static_call_text_reserved(p->addr, p->addr) ||
find_bug((unsigned long)p->addr)) {
ret = -EINVAL;
goto out;
--
2.30.2