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engines/mmap: fix segfault on large devices and 32-bit archs
[fio.git]
/
engines
/
mmap.c
diff --git
a/engines/mmap.c
b/engines/mmap.c
index 6464cbada7f2cc189abbb23a282be37e6fbac7c9..b938d6b70f20c5817530891ed470bb67fddf8c65 100644
(file)
--- a/
engines/mmap.c
+++ b/
engines/mmap.c
@@
-103,6
+103,11
@@
static int fio_mmapio_prep_full(struct thread_data *td, struct io_u *io_u)
if (fio_file_partial_mmap(f))
return EINVAL;
+ if (io_u->offset != (size_t) io_u->offset ||
+ f->io_size != (size_t) f->io_size) {
+ fio_file_set_partial_mmap(f);
+ return EINVAL;
+ }
fmd->mmap_sz = f->io_size;
fmd->mmap_off = 0;