On 9/16/23 15:52, Mikulas Patocka wrote:
The code in setup_rt_frame reads two words at haddr, but locks only one.
This patch fixes it to lock both.
Signed-off-by: Mikulas Patocka <mpatocka@xxxxxxxxxx>
---
linux-user/hppa/signal.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
Index: qemu/linux-user/hppa/signal.c
===================================================================
--- qemu.orig/linux-user/hppa/signal.c
+++ qemu/linux-user/hppa/signal.c
@@ -149,12 +149,11 @@ void setup_rt_frame(int sig, struct targ
target_ulong *fdesc, dest;
haddr &= -4;
- if (!lock_user_struct(VERIFY_READ, fdesc, haddr, 1)) {
+ if (!(fdesc = lock_user(VERIFY_READ, haddr, 2 * sizeof(target_ulong), 1)))
goto give_sigsegv;
- }
Patch is Ok, but I think the qemu coding style is to keep the { } braces, even
if they are unnecessary (as in this case).
Acked-by: Helge Deller <deller@xxxxxx>
__get_user(dest, fdesc);
__get_user(env->gr[19], fdesc + 1);
- unlock_user_struct(fdesc, haddr, 1);
+ unlock_user(fdesc, haddr, 0);
haddr = dest;
}
env->iaoq_f = haddr;
