arch_uprobe_analyze_insn() calls handle_riprel_insn() at the start,
but only "0xff" and "default" cases need the UPROBE_FIX_RIP_ logic.
Move the callsite into "default" case and change the "0xff" case to
fall-through.
We are going to add the various hooks to handle the rip-relative
jmp/call instructions (and more), we need this change to enforce the
fact that the new code can't conflict with is_riprel_insn() code.
Signed-off-by: Oleg Nesterov <o...@redhat.com>
---
arch/x86/kernel/uprobes.c | 6 ++----
1 files changed, 2 insertions(+), 4 deletions(-)
diff --git a/arch/x86/kernel/uprobes.c b/arch/x86/kernel/uprobes.c
index 098e56e..d72dfbf 100644
--- a/arch/x86/kernel/uprobes.c
+++ b/arch/x86/kernel/uprobes.c
@@ -376,8 +376,6 @@ int arch_uprobe_analyze_insn(struct arch_uprobe *auprobe,
struct mm_struct *mm,
* and annotate arch_uprobe->fixups accordingly. To start with, ->fixups
* is either zero or it reflects rip-related fixups.
*/
- handle_riprel_insn(auprobe, mm, &insn);
-
switch (OPCODE1(&insn)) {
case 0x9d: /* popf */
auprobe->fixups |= UPROBE_FIX_SETF;
@@ -406,9 +404,9 @@ int arch_uprobe_analyze_insn(struct arch_uprobe *auprobe,
struct mm_struct *mm,
case 4: case 5: /* jmp or ljmp, indirect */
fix_ip = false;
}
- break;
+ /* fall through */
default:
- break;
+ handle_riprel_insn(auprobe, mm, &insn);
}
if (fix_ip)
--
1.5.5.1
--
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