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yaml --- r: 17143 b: refs/heads/master c: 9687c58 h: refs/heads/master i: 17141: 19294fe 17139: 96eb166 17135: fb19100 v: v3
git-mirror · Jan 9, 2006 · ca67e6c · ca67e6c
1 parent 29c648c
commit ca67e6c
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Showing 2 changed files with 10 additions and 1 deletion.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 31df1678d7732b94178a6e457ed6666e4431212f
+refs/heads/master: 9687c587596b54a77f08620595f5686ea35eed97
diff --git a/trunk/arch/powerpc/kernel/signal_32.c b/trunk/arch/powerpc/kernel/signal_32.c
@@ -219,6 +219,15 @@ static inline int get_old_sigaction(struct k_sigaction *new_ka,
 static inline int save_general_regs(struct pt_regs *regs,
 		struct mcontext __user *frame)
 {
+	if (!FULL_REGS(regs)) {
+		/* Zero out the unsaved GPRs to avoid information
+		   leak, and set TIF_SAVE_NVGPRS to ensure that the
+		   registers do actually get saved later. */
+		memset(&regs->gpr[14], 0, 18 * sizeof(unsigned long));
+		current_thread_info()->nvgprs_frame = &frame->mc_gregs;
+		set_thread_flag(TIF_SAVE_NVGPRS);
+	}
+
 	return __copy_to_user(&frame->mc_gregs, regs, GP_REGS_SIZE);
 }