Le 30/12/2015 02:10, cheng...@emindsoft.com.cn a écrit : > From: Chen Gang <cheng...@emindsoft.com.cn> > > When mapping MAP_ANONYMOUS memory fragments, still need notice about to > set it zero, or it will cause issues. > > Signed-off-by: Chen Gang <gang.chen.5...@gmail.com> > --- > linux-user/mmap.c | 4 +++- > 1 files changed, 3 insertions(+), 1 deletions(-) > > diff --git a/linux-user/mmap.c b/linux-user/mmap.c > index 7b459d5..c6c478e 100644 > --- a/linux-user/mmap.c > +++ b/linux-user/mmap.c > @@ -186,10 +186,12 @@ static int mmap_frag(abi_ulong real_start, > if (prot_new != (prot1 | PROT_WRITE)) > mprotect(host_start, qemu_host_page_size, prot_new); > } else { > - /* just update the protection */ > if (prot_new != prot1) { > mprotect(host_start, qemu_host_page_size, prot_new); > } > + if (prot_new & PROT_WRITE) { > + memset(g2h(start), 0, end - start); > + } > } > return 0; > } >
Reviewed-by: Laurent Vivier <laur...@vivier.eu>