While compiling mainline with gcc-9.1.1 the following warning is emitted:
===========================================================
../arch/x86/kernel/ptrace.c: In function ‘set_segment_reg’:
../arch/x86/kernel/ptrace.c:202:6: warning: this statement may fall
through [-Wimplicit-fallthrough=]
202 | if (unlikely(value == 0))
| ^
../arch/x86/kernel/ptrace.c:205:2: note: here
205 | default:
| ^~~~~~~
===========================================================
The patch below silences the warning, but I don't know if this is actual
intended behaviour.
Christian.
diff --git a/arch/x86/kernel/ptrace.c b/arch/x86/kernel/ptrace.c
index 0fdbe89d0754..0030456d6e5c 100644
--- a/arch/x86/kernel/ptrace.c
+++ b/arch/x86/kernel/ptrace.c
@@ -201,6 +201,7 @@ static int set_segment_reg(struct task_struct *task,
case offsetof(struct user_regs_struct, ss):
if (unlikely(value == 0))
return -EIO;
+ /* fall through */
default:
*pt_regs_access(task_pt_regs(task), offset) = value;
--
BOFH excuse #326:
We need a licensed electrician to replace the light bulbs in the computer room.
