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[3/7] linux-user: fix signal number range check

Message ID 167c50d8f94e0ffb880aa5cd2a232a3f32f0df1d.1373051589.git.riku.voipio@linaro.org
State New
Headers show

Commit Message

Riku Voipio July 10, 2013, 10:20 a.m. UTC 
From: Andreas Schwab <schwab@linux-m68k.org>

When translating between host and target signal numbers keep negative
numbers unchanged, avoiding access beyond array bounds.

Signed-off-by: Andreas Schwab <schwab@linux-m68k.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 878v2b8sek.fsf@igel.home
---
 linux-user/signal.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
diff mbox

Patch

diff --git a/linux-user/signal.c b/linux-user/signal.c
index c4e20dc..d84e189 100644
--- a/linux-user/signal.c
+++ b/linux-user/signal.c
@@ -102,14 +102,14 @@  static inline int sas_ss_flags(unsigned long sp)
 
 int host_to_target_signal(int sig)
 {
-    if (sig >= _NSIG)
+    if (sig < 0 || sig >= _NSIG)
         return sig;
     return host_to_target_signal_table[sig];
 }
 
 int target_to_host_signal(int sig)
 {
-    if (sig >= _NSIG)
+    if (sig < 0 || sig >= _NSIG)
         return sig;
     return target_to_host_signal_table[sig];
 }