Commit 7f84c127 authored by Peter Maydell's avatar Peter Maydell Committed by Andrzej Zaborowski
Browse files

compatfd.c: Don't pass NULL pointer to SYS_signalfd 



Don't pass a NULL pointer in to SYS_signalfd in qemu_signalfd_available():
this isn't valid and Valgrind complains about it.

Signed-off-by: default avatarPeter Maydell <peter.maydell@linaro.org>
Reviewed-by: default avatarStefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Signed-off-by: default avatarAndrzej Zaborowski <andrew.zaborowski@intel.com>
parent 1386d4c0

compatfd.c

+10 −2
Original line number Diff line number Diff line
@@ -119,9 +119,17 @@ int qemu_signalfd(const sigset_t *mask) 
bool qemu_signalfd_available(void)

{

#ifdef CONFIG_SIGNALFD

    sigset_t mask;

    int fd;

    bool ok;

    sigemptyset(&mask);

    errno = 0;

    syscall(SYS_signalfd, -1, NULL, _NSIG / 8);

    return errno != ENOSYS;

    fd = syscall(SYS_signalfd, -1, &mask, _NSIG / 8);

    ok = (errno != ENOSYS);

    if (fd >= 0) {

        close(fd);

    }

    return ok;

#else

    return false;

#endif