While examining the code I realized that we don't copy si_call_addr to
32bit callers. Fix it.
It looks like no one has used this code path in the last 5 years.
Cc: Will Drewry <wad@xxxxxxxxxxxx>
Cc: H. Peter Anvin <hpa@xxxxxxxxx>
Cc: Eric Paris <eparis@xxxxxxxxxx>
Cc: Serge Hallyn <serge@xxxxxxxxxx>
Cc: James Morris <james.l.morris@xxxxxxxxxx>
Fixes: a0727e8ce513 ("signal, x86: add SIGSYS info and make it synchronous.")
Signed-off-by: "Eric W. Biederman" <ebiederm@xxxxxxxxxxxx>
---
arch/x86/kernel/signal_compat.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/x86/kernel/signal_compat.c b/arch/x86/kernel/signal_compat.c
index 71beb28600d4..59e1029bb3d0 100644
--- a/arch/x86/kernel/signal_compat.c
+++ b/arch/x86/kernel/signal_compat.c
@@ -161,6 +161,7 @@ int __copy_siginfo_to_user32(compat_siginfo_t __user *to, const siginfo_t *from,
}
break;
case __SI_SYS >> 16:
+ put_user_ex(ptr_to_compat(from->si_call_addr), &to->si_call_addr);
put_user_ex(from->si_syscall, &to->si_syscall);
put_user_ex(from->si_arch, &to->si_arch);
break;
--
2.10.1
--
To unsubscribe from this list: send the line "unsubscribe linux-api" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
