diff options
| -rw-r--r-- | linux-user/s390x/signal.c | 5 | ||||
| -rw-r--r-- | linux-user/syscall.c | 11 |
2 files changed, 11 insertions, 5 deletions
diff --git a/linux-user/s390x/signal.c b/linux-user/s390x/signal.c index ecfa2a14a9..7107c5fb53 100644 --- a/linux-user/s390x/signal.c +++ b/linux-user/s390x/signal.c @@ -211,9 +211,10 @@ void setup_rt_frame(int sig, struct target_sigaction *ka, /* Set up to return from userspace. If provided, use a stub already in userspace. */ if (ka->sa_flags & TARGET_SA_RESTORER) { - env->regs[14] = (unsigned long) ka->sa_restorer | PSW_ADDR_AMODE; + env->regs[14] = ka->sa_restorer | PSW_ADDR_AMODE; } else { - env->regs[14] = (unsigned long) frame->retcode | PSW_ADDR_AMODE; + env->regs[14] = (frame_addr + offsetof(typeof(*frame), retcode)) + | PSW_ADDR_AMODE; __put_user(S390_SYSCALL_OPCODE | TARGET_NR_rt_sigreturn, (uint16_t *)(frame->retcode)); } diff --git a/linux-user/syscall.c b/linux-user/syscall.c index 1e508576c7..294779c86f 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -3679,9 +3679,14 @@ static abi_long do_recvfrom(int fd, abi_ulong msg, size_t len, int flags, void *host_msg; abi_long ret; - host_msg = lock_user(VERIFY_WRITE, msg, len, 0); - if (!host_msg) - return -TARGET_EFAULT; + if (!msg) { + host_msg = NULL; + } else { + host_msg = lock_user(VERIFY_WRITE, msg, len, 0); + if (!host_msg) { + return -TARGET_EFAULT; + } + } if (target_addr) { if (get_user_u32(addrlen, target_addrlen)) { ret = -TARGET_EFAULT; |