ea4f779462
commit 267ed02c2121b75e0eaaa338240453b576039e4a upstream.
dev_t is a kernel type and may have different definitions
in kernel and userspace. On 32-bit x86 this currently makes
the stat structure being 4 bytes longer in the user code,
causing stack corruption.
However, this is (potentially) not the only problem, since
dev_t is a different type on user/kernel side, so we don't
know that the major/minor encoding isn't also different.
Decode/encode it instead to address both problems.
Cc: stable@vger.kernel.org
Fixes:
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|---|---|---|
| .. | ||
| Makefile | ||
| hostfs.h | ||
| hostfs_kern.c | ||
| hostfs_user.c | ||
| hostfs_user_exp.c | ||